Europalsches Patentamt
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`9 Office européen des brevets
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`European Patent Office
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`6) Publication number:
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`0 594 992 A1
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`®
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`EUROPEAN PATENT APPLICATION
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`® Application number: 931144355
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`@ Int. C|.5: H04N 1/21
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`@ Date of filing: 01909.93
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`@ Priority: 09.09.92 JP 266596/92
`22.09.92 JP 252922/92
`2209.92 JP 252394/92
`22.09.92 JP 252923/92
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`Date of publication of application:
`04.05.94 Bulletin 94/18
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`Designated Contracting States:
`DE FR GB
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`@ Information signal processing apparatus.
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`69 An information signal processing apparatus ac-
`cording to the present invention is arranged to re-
`ceive, as an input, an information signal to temporar-
`ily store therein the input information signal and to
`temporarily store therein management
`information
`prepared during a recording of the information signal
`in the recording medium, thereby recording the tem-
`porarily stored information signal and management
`information in the recording medium. Accordingly, it
`is possible to record an information signal having a
`large amount of information in the recording medium
`without
`lowering a recording speed and it
`is also
`possible to easily reduce the size. weight and cost of
`the apparatus.
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`EP0594992A1
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`@ Applicant: CANON KABUSHIKI KAISHA
`30-2, 3-chome, Shimomaruko.
`Ohta-ku
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`Tokyo(JP)
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`@ Inventor: Yamaglshl, Yolchl
`c/o Canon Kabushiki Kaisha,
`3-30-2, Shlmomaruko
`Ohta-ku, Tokyo(JP)
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`Representative: Tiedtke, Harro, DipI.-Ing.
`Patentanwaltsbiiro
`
`Tiedtke-Biihling-Kinne 8: Partner
`Bavarlarlng 4
`D-80336 Munchen (DE)
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`
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`
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`Rank Xerox (UK) Business Services
`l3.10/3.09/3.3.4l
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`Page 1 of 149
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`SAMSUNG EXHIBIT 1006
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`Background of the Invention:
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`Field of the Invention:
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`The present invention relates to an information
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`signal processing apparatus for processing an in-
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`formation signal and, more particularly,
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`formation signal processing apparatus for recording
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`an information signal in a recording medium.
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`Description of the Related Art:
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`An electronic still video system has heretofore
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`been known as one example of an information
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`signal processing apparatus for processing an in—
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`formation signal. The electronic still video system
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`is arranged to record information signals, such as
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`image signals or sound signals, on a plurality of
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`concentric recording tracks which are formed on a
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`magnetic disk, and to select an arbitrary recording
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`track from among the recording tracks formed on
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`the magnetic disk and reproduce the information
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`signal, such as the image signal or
`the sound
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`signal, recorded on the selected recording track.
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`Such an electronic still video system is ar-
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`ranged to record the image signals or the sound
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`signals on the recording tracks formed on the mag-
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`netic disk,
`in the state of analog signals. However,
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`a new system has recently been proposed which is
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`arranged to store digitized image signals or sound
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`signals in a memory card including a plurality of
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`RAMS (random access memories) made from
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`semiconductor memory elements such as D-RAMs,
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`S-RAMs or EEP-ROMs.
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`However, the storage capacity of the memory
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`card is limited because of the limited storage ca-
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`pacity per chip of the memory device or the limits
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`of the number of chips of a memory element which
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`can be mounted on a single memory card. Further,
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`since the memory element is more expensive than
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`other recording media,
`it is presently economically
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`difficult to utilize the memory card as a recording
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`medium of large storage capacity.
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`is known as a
`In contrast, a hard disk unit
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`recording medium having a larger storage capacity
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`than the memory card, and there has recently been
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`provided a hard disk unit which is removably at-
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`tachable to an apparatus body similarly to the
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`memory card.
`If such a hard disk unit is used with
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`an electronic still video camera as a recording
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`medium,
`is possible to construct comparatively
`it
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`inexpensively a system having a large storage ca“
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`pacity.
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`Various kinds of hard disk units are provided
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`for various specifications such as recording capac-
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`ity, weight, power consumption and recording
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`speed.
`If the system is constructed so that plural
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`kinds of hard disk units can be attached,
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`it
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`possible to meet a variety of demands of users.
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`The aforesaid system is constructed to record
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`a digitized image signal
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`image data) or a
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`digitized sound signal (i.e., sound data) in a record-
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`ing medium such as the memory card or the hard
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`disk unit
`in the following manner. The recording
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`area of the recording medium is divided into an
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`information data recording area and a management
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`data recording area, and the image data or the
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`sound data is divided into units each corresponding
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`to what is called "cluster", and each of the units is
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`recorded in one cluster
`in the information data
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`recording area.
`Information data indicative of the
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`state of use of each cluster
`is recorded in the
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`management data recording area.
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`If image data or sound data is to be recorded
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`over a plurality of clusters, during recording of the
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`image data or the sound data, while the position of
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`a cluster in which the image data or the sound data
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`is recorded is being stored in a management data
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`memory provided in a system control circuit, the
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`image data or the sound data is recorded in the
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`information data recording area. After the comple-
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`the recording of
`the image data or
`tion of
`the
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`sound data,
`the information data indicative of the
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`state of use of each cluster, which is stored in the
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`management data memory provided in the system
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`control circuit,
`is recorded in the management data
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`recording area.
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`However,
`if the amount of data of the image
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`the sound data to be recorded in the
`data or
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`recording medium is increased and the number of
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`clusters used for recording the image data or the
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`sound data is increased for the purpose of record-
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`ing high-quality-image data or high-quality-sound
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`data, it is necessary to provide a management data
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`memory of large storage capacity within the sys»
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`tem control circuit so that the positions of clusters
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`used for recording the image data or the sound
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`data can be stored during the recording of
`the
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`image data or the sound data. With such an ar-
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`rangement,
`is extremely difficult
`to reduce the
`it
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`size, weight and cost of the apparatus.
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`On the other hand,
`if a memory of small stor-
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`age capacity is used as the management data
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`memory provided within the system control circuit,
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`the size, weight and cost of
`the system can be
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`reduced. However, the management data memory
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`of small storage capacity does not have a sufficient
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`storage capacity to store the positions of clusters
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`used during recording of
`the image data or the
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`sound data. Accordingly,
`the management data
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`memory of small storage capacity needs to repeat
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`the processing of stopping once the operation of
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`recording the image data or the sound data in the
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`information data recording area, reading informa-
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`tion data indicative of
`reading information data,
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`stored in the management data recording area,
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`L“
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`70
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`20
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`25
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`30
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`35
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`40
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`45
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`Page 2 of 149
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`SAMSUNG EXHIBIT 1006
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`Page 2 of 149
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`SAMSUNG EXHIBIT 1006
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`

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`3
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`EP 0 594 992 A1
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`4
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`re~
`indicative of the state of use of each cluster,
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`cording the read information data in the manage-
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`ment data recording area, and restarting the opera-
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`tion of recording the image data or the sound data
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`in the information data recording area. As a result,
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`there is the problem that the speed of recording of
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`the image data or the sound data lowers remark-
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`ably while image data corresponding to a plurality
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`of images or sound data corresponding to a long-
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`time sound is being continuously recorded.
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`The data files of the image data or the sound
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`data which are recorded in the recording medium,
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`such as a memory card or a hard disk unit,
`in the
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`above-described manner, are read from the record-
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`ing medium in units of one data file and transmitted
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`to an external device, such as an external com-
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`puter, a printer and a data transmission device.
`In
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`the external device, various processing such as
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`operational processing, printing processing or data
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`transmission processing is performed. Each of the
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`data files recorded in the recording medium is
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`handled as an independent file.
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`To prevent a wrong data file from being errone»
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`ously read out together with a desired file recorded
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`in the recording medium or to prevent a wrong
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`data file from being erroneously erased during era~
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`sure of a desired file recorded in the recording
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`medium,
`it
`is necessary to individually add a dis-
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`crimination number to each data tile during record-
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`ing of the data files in the recording medium so
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`that each of
`the data files can be identified. For
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`example, a system which records image data files
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`in the recording medium is arranged to count the
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`number of photographic pictures recorded during
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`photographing and recording operations, store the
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`counted number of recorded photographic pictures
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`in a system body, generates a discrimination num»
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`re-
`ber corresponding to the stored number or
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`corded photographic pictures, add the generated
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`discrimination number to an obtained image data
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`file, and record the image data file in the recording
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`medium together with the generated discrimination
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`number.
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`Since the above-described electronic still video
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`camera is a portable device, a supply of electric
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`power depends on a battery and,
`if the remaining
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`amount of battery power becomes less during
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`photographing and recording,
`it will be necessary
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`to replace the battery.
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`It the remaining amount of power in the battery
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`provided in the system body is insufficient or the
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`battery is removed from the system body for bat-
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`tery replacement,
`the number of recorded photo-
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`graphic pictures which has been stored in the
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`system body in the above-described manner will
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`be reset. It photographing and recording operations
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`are executed after the battery replacement, a dis-
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`crimination number
`identical
`to a discrimination
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`number which is already added to an image data
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`file recorded in the recording medium is added to a
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`new image data tile, and the new image data file is
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`recorded together with the already used discrimina-
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`tion number. When a predetermined image data
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`file recorded in the recording medium is to be read
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`out and transmitted to an external device, such as
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`an external computer, a printer and a data trans-
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`mission device for the purpose of executing various
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`processing such as operational processing, printing
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`processing or data transmission processing in the
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`external device, there is the problem that a wrong
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`data file is erroneously read out together with the
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`desired file. Otherwise, when a predetermined data
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`file recorded in the recording medium is to be
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`erased,
`there is the problem that a wrong file is
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`erroneously erased in place of the desired file.
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`To solve the above-described problems, a non-
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`volatile memory may be provided in the system
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`body so that the counted number of recorded pho~
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`tographic pictures is stored in the nonvolatile mem-
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`ory during photographing and recording operations.
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`With this arrangement,
`it the remaining amount of
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`power in the battery provided in the system body
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`becomes insufficient or
`the battery is
`removed
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`from the system body for battery replacement, it is
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`possible to prevent resetting of the counted num-
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`ber of recorded photographic pictures which are
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`stored in the nonvolatile memory within the system
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`body in the above-described manner. However, the
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`number of times of data rewriting of the nonvolatile
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`memory is limited, and if the number of times of
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`rewriting of data about
`the number of recorded
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`photographic pictures exceeds the allowable num-
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`ber of times ot data writing of the nonvolatile mem-
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`ory, data about
`the number of
`recorded photo-
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`graphic picturos
`is not correctly updated. As a
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`result, a discrimination number identical
`to a dis-
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`crimination number which is already added to an
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`image data file recorded in the recording medium
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`is added to a new image data file, and the new
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`image data file is recorded together with the al-
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`ready used discrimination number.
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`The above-described system is also arranged
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`in the following manner.
`It a digitized image signal
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`(i.e.,
`image data) or a digitized sound signal (i.e.,
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`sound data) are to be recorded in a recording
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`medium such as a memory card or a hard disk
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`unit, after the image data or the sound data is
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`stored in an image memory once, the image data
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`or the sound data stored in the image memory is
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`read out and recorded in the recording medium.
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`During photographing and recording operations,
`it
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`the storage capacity of the image memory is titled
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`with the image data or the sound data stored in the
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`image memory once,
`the photographing and re-
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`cording operations are interrupted once and the
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`image data or the sound data stored in the image
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`SAMSUNG EXHIBIT 1006
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`Page 3 of 149
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`SAMSUNG EXHIBIT 1006
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`5
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`EP 0 594 992 A1
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`6
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`memory is transmitted to and recorded in the re-
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`cording medium. Thus,
`it a storage capacity ca-
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`pable of storing the image data or the sound data
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`occurs in the storage capacity of the image mem-
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`ory, the system is placed in the state of being able
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`to restart
`the photographing and recording oper-
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`ations.
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`the electronic still
`the case of
`in
`However,
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`camera having the above~described arrangement,
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`an operator cannot make a judgement as to wheth-
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`er the photographing and recording operations are
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`interrupted because the storage capacity of
`the
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`image memory is full or the photographing and
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`recording operations can be performed because
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`the storage capacity of the image memory contains
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`a data storable portion. Such an electronic still
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`camera, therefore, involves the following operation—
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`al disadvantages. For example,
`if the operator op-
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`erates a recording start
`instructing switch to con-
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`tinue the photographing and recording operations,
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`it may be impossible to start the photographing
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`and recording operations.
`If the operator operates
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`the recording start instructing switch during an in-
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`terruption of the photographing and recording oper-
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`ations and the recording start
`instructing switch
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`remains operated, the photographing and recording
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`operations are restarted at an unintended timing for
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`the operator, so that unintended image data or
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`sound data will be recorded in the recording me-
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`dium.
`is particularly difficult for the operator to
`It
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`make a judgement as to the timings of starting,
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`resuming and ending of
`the photographing and
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`recording operations during a continuous-shooting
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`recording mode.
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`Such an electronic still camera has also con-
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`ventionally been realized as an apparatus capable
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`of recording and reproducing still
`image data and
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`sound data in a recording medium using a mag-
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`netic disk called a still video floppy disk. An elec-
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`tronic still camera is also proposed which uses a
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`memory card including a solid-state memory ele-
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`ment, such as a DRAM, an SRAM or an EEPROM,
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`which is packaged in card form.
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`If the still image data and the sound data are to
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`be recorded in the recording medium described
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`above, the still image data and the sound data are
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`recorded in file form on picture-by-picture basis,
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`and combination information indicative of a cor-
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`respondence between each image file and each
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`sound file is also recorded as a control file. On the
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`basis of the combination information in the control
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`the image files and the sound files are com
`file,
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`bined so that reproduction or transmission can be
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`performed.
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`in the case of the conventional elec-
`However,
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`tronic still camera,
`it the control file is erased, the
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`correspondence between the image files and the
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`sound files is lost, so that
`is impossible to op-
`it
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`timumly combine the image files with the sound
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`files so that reproduction or transmission can be
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`performed.
`
`
`Summary of the Invention:
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`
`It
`is, therefore, an object of the present inven—
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`tion to an information signal processing apparatus
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`capable of solving the above-described problems.
`
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`
`
`Another object of the present
`invention is to
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`provide an information signal processing apparatus
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`which is capable of recording an information signal
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`having a large amount of information in a recording
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`medium without
`lowering a recording speed and
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`the size, weight and cost of which can be easily
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`reduced.
`
`ac—
`To achieve the above—described objects,
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`cording to one aspect of
`the present
`invention,
`
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`
`
`there is provided an information signal processing
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`
`
`apparatus which is arranged to record an informa—
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`
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`tion signal in a recording medium and which com-
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`prises recording means for recording the informa-
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`tion in the recording medium, and temporarily stor-
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`ing means for receiving, as its input, an information
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`signal,
`temporarily storing therein the input
`infor-
`
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`mation signal and storing therein management in-
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`formation prepared during a recording of
`the in-
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`
`
`formation signal in the recording medium.
`
`
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`
`
`
`Another object of the present
`invention is to
`
`
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`
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`
`
`provide an information signal processing apparatus
`
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`of good operability which is capable of preventing
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`erroneous discrimination information from being ad—
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`ded to an information signal when discrimination
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`information which serves to discriminate among
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`information signals to be recorded in a recording
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`medium in predetermined units is to be added to
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`the information signal, so that the information signal
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`can be recorded in the recording medium with
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`correct discrimination information added to the in-
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`formation signal.
`In such an information signal pro-
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`cessing apparatus,
`it is possible to accurately read
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`out the information signal recorded in the recording
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`medium in the predetermined units so that the read
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`information signal can be erased or subjected to
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`various processings in the external device.
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`To achieve the above-described object, ac-
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`cording to another aspect of the present invention,
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`there is provided an information signal processing
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`
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`apparatus which is arranged to record an informa-
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`tion signal in a recording medium and which com-
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`prises management information adding means for
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`receiving, as an input, an information signal and
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`adding management
`information corresponding to
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`an order of recording of the information signal
`in
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`the recording medium to the information signal
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`during a recording of the input information signal in
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`the recording medium, and recording means for
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`recording in the recording medium the information
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`L“
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`70
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`Page 4 of 149
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`SAMSUNG EXHIBIT 1006
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`Page 4 of 149
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`SAMSUNG EXHIBIT 1006
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`

`

`7
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`EP 0 594 992 A1
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`8
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`parent
`from the following detailed description of
`
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`
`
`preferred embodiments of
`the present
`invention,
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`taken in conjunction with the accompanying draw-
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`
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`ings.
`
`
`Brief Description of the Drawings:
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`to which the management
`signal
`information is
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`added by the management
`information adding
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`means.
`
`invention is to
`Another object of the present
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`provide an information signal processing apparatus
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`of good operability which is arranged so that when
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`an image signal is to be continuously recorded in a
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`recording medium, an operator can easily make a
`
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`judgement as to the recording timing of the image
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`to record the necessary information in a
`signal
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`recording medium at the desired timing, whereby it
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`is possible to prevent erroneous recording of an
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`unnecessary information signal.
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`in accordance
`To achieve the above object,
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`with another aspect of the present invention, there
`
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`
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`is provided an information signal processing ap-
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`paratus which is arranged to record an information
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`signal in a recording medium and which comprises
`
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`temporarily storing means for receiving, as an in-
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`put, an information signal and temporarily storing
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`the input information signal, display means for dis-
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`playing a state of a recording capacity of
`the
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`information signal in the temporarily storing means,
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`recording means for reading the information signal
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`temporarily stored in the temporarily storing means
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`and recording the read information signal
`in the
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`recording medium, and controlling means for con-
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`trolling the temporarily storing means and the re-
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`cording means so that the information signal tem-
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`porarily stored in the temporarily storing means is
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`recorded in the recording medium by the recording
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`means and for causing the display means to dis-
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`play the state of
`the recording capacity of
`the
`
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`
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`information signal in the temporarily storing means.
`
`
`
`
`
`
`
`Another object of the present
`invention is to
`
`
`
`
`
`
`
`
`provide an information signal processing apparatus
`
`
`
`
`
`
`capable of optimumly combining still
`image data
`
`
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`
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`with sound data for the purpose of reproduction or
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`transmission even if there is no information indica-
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`tive of a correspondence relation between the still
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`image data and the sound data.
`
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`
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`in accordance
`To achieve the above object,
`
`
`
`
`
`
`
`with another aspect of the present invention, there
`
`
`
`
`
`
`
`
`is provided an information signal processing ap-
`
`
`
`
`
`
`paratus which is arranged to record still image data
`
`
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`
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`
`
`
`and sound data in a recording medium and which
`
`
`
`
`
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`
`
`comprises decision means for determining whether
`
`
`
`
`
`
`a combination of the still image data and the sound
`
`
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`
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`data recorded in the recording medium is appro-
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`
`
`priate, on the basis of a recording time of each of
`
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`the still
`image data and the sound data, and pro-
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`cessing means
`for combining,
`if
`the decision
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`means determines that the combination of the still
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`image data and the sound data is appropriate, the
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`still image data with the sound data and executing
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`predetermined processing.
`
`
`The above and other objects, features and ad-
`
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`
`
`vantages of the present invention will become ap-
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`{:1
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`1
`is a block diagram schematically showing
`Fig.
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`the arrangement of an electronic still video sys-
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`tem to which the present invention is applied as
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`a first embodiment thereof;
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`Fig. 2 is part of a flowchart showing the operat-
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`ing routine of the electronic still video system
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`shown in Fig. 1;
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`Fig. 3 is part of the flowchart showing the op-
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`erating routine of the electronic still video sys-
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`tem shown in Fig. 1;
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`Fig. 4 is a flowchart which serves to explain in
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`detail the retrieval operation routine executed in
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`each of Step 5 of Fig. 2 and Step 85 of Fig. 11;
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`Fig. 5 is a flowchart which serves to explain in
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`detail
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`routine executed in each of Step 822 of Fig. 3
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`and Step 822 of Fig. 12;
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`Fig. 6 is a flowchart which serves to explain in
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`detail the photographic operation routine execut—
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`ed in each of Step 324 of Fig. 3 and Step 824
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`of Fig. 12;
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`Fig. 7 is a flowchart which serves to explain in
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`detail
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`routine executed in Step 341 of Fig. 4;
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`Fig. 8 is a flowchart which serves to explain in
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`detail the directory entry retrieval operation rou-
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`tine executed in Step 843 of Fig. 4;
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`Fig. 9 is a flowchart which serves to explain in
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`detail the file allocation table retrieval operation
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`routine executed in Step 845 of Fig. 4;
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`Fig. 10 is a flowchart which serves to explain in
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`detail
`the recording operation routine executed
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`in each of Step 325 of Fig. 3 and Step 825 of
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`Fig. 12;
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`Fig. 11 is part of a flowchart showing the main
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`operating routine of an electronic still video sys-
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`tem according to a second embodiment of the
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`present invention;
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`Fig. 12 is part of the flowchart showing the main
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`operating routine of
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`system according to the second embodiment of
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`the present invention;
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`Fig. 13 is a block diagram schematically show-
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`ing the arrangement of an electronic still video
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`system to which the present invention is applied
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`as a third embodiment thereof;
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`Fig. 14 is part of a flowchart showing the main
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`operation routine of
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`system shown in Fig. 13;
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`Fig. 15 is part of the flowchart showing the main
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`operation routine of
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`Page 5 of 149
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`SAMSUNG EXHIBIT 1006
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`Page 5 of 149
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`SAMSUNG EXHIBIT 1006
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`

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`9
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`EP 0 594 992 A1
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`10
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`system shown in Fig. 13;
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`Fig. 16 is a flowchart which serves to explain in
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`detail the retrieval operation routine executed in
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`Step 1015 of Fig. 14;
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`Fig. 17 is a flowchart which serves to explain in
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`detail
`the distance-light measuring operation
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`routine executed in Step 81020 of Fig. 15;
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`Fig. 18 is a flowchart which serves to explain in
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`detail the photographic operation routine execut-
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`ed in Step $1022 of Fig. 15;
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`Fig. 19 is a flowchart which serves to explain in
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`detail the recording operation routine executed
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`in Step S1029 of Fig. 15;
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`the
`Fig. 20 shows a fourth embodiment of
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`present
`invention and is
`a flowchart which
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`serves to explain in detail another retrieval op-
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`eration routine executed in Step 1015 of Fig. 14;
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`21
`shows a fourth embodiment of
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`Fig.
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`present
`invention and is
`a flowchart which
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`serves to explain in detail another retrieval op—
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`eration routine executed in Step 1029 of Fig. 15;
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`Fig. 22 shows a fifth embodiment of the present
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`invention and is part of a flowchart showing the
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`main operation routine of the electronic still vid-
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`eo system shown in Fig. 13;
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`the
`Fig. 23 shows
`the fifth embodiment of
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`present
`invention and is part of the flowchart
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`showing the main operation routine of the elec-
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`tronic still video system shown in Fig. 13;
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`Fig. 24 is a block diagram schematically show-
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`ing the arrangement of an electronic still video
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`system to which the present invention is applied
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`as a sixth embodiment thereof;
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`Fig. 25 is part of a flowchart showing t