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`PATENT ABSTRACTS OF JAPAN
`
`(ll)Publication number:
`11-273321
`(43)Date of publication of application : 08.10.1999
`
`{51)lnt.C!.
`
`G11B 31/00
`B60R 11/02
`
`(21)Application number: 10-076115
`(22)Date of filing :
`24.03.1998
`
`(71)Applicant: CLARION CO LTD
`(72)lnventor: [DO KAZUHIRO
`NAKABACHI YOSHIKI
`UEHARA NAGATOSHI
`HAM ASH IMA SADAFUMI
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`(54) CAR AUDIO SYSTEM, VEHICLE-MOUNTED COMPUTER, AND METHOD FOR
`CONTROLLING CAR AUDIO SYSTEM
`(57)Abstract:
`PROBLEM TO BE SOLVED: To utilize both advantages
`by combining a compact computer with a universal OS
`and a car audio system.
`SOLUTION: A local bus B1 corresponding to the form of
`a CPU 11 included in a computer, a PCI bus B2 for
`connecting equipment 15, 21, 22, 3, 16, and 7 included
`in a car audio system, and a PCI bus host controller 114
`for converting data form between the buses B1 and B2
`are provided. An OS for the CPU 111 is stored in a flash
`ROM 113. The CPU 111 can speedily perform complex
`processing by efficiently accessing a memory 112 or the
`like. The computer and the car audio system can be
`operated smoothly. A multi-task can be facilitated, where
`another processing can be made with another path while
`an audio signal is being reproduced. Only the path corresponding to the form of the CPU 111
`may be changed when the form of the CPU 111 is to be changed.
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`Page 568 of 1125
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`^11-273321^ [CLAIMS]
`
`Page 1 of2
`
`* NOTICES *
`
`JPO and INPIT are not responsible for any
`damages caused by the use of this translation.
`
`1 This document has been translated by computer. So the translation may not reflect the
`original precisely.
`2.**** shows the word which can not be translated.
`3.In the drawings, any words are not translated.
`
`CLAIMS
`
`[Claim(s)]
`[Claim 1]A car audio system comprising provided with a computer for control:
`A means by which said computer is provided with an operating system and this operating
`system manages resources on a computer.
`A means to execute a program of form beforehand decided to be a means to control input and
`output containing a user interface.
`
`[Claim 2]A car audio system comprising provided with a computer for control:
`The 1st bus corresponding to form of CPU contained in said computer.
`The 2nd bus for connecting apparatus contained in said car audio system.
`
`[Claim 3]A car audio system comprising provided with a computer for control:
`A local bus corresponding to form of CPU contained in said computer.
`A PCI bus for connecting apparatus contained in said car audio system.
`
`[Claim 4]The car audio system according to claim 2 or 3 provided with a means to change form
`of data between said each bus.
`[Claim 5]A car audio system of any one statement of four from claim 1 provided with the 3rd
`bus for connecting two or more apparatus contained in said car audio system in daisy chain
`form.
`[Claim 6]A computer for mount characterized by comprising the following.
`An operating system which realizes environment required in order to execute a program of
`form decided beforehand.
`A means to control a car audio system and said car audio system.
`
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`

`
`JP,11-273321,A [CLAIMS]
`
`Page 2 of 2
`
`[Claim 7]A computer for mount provided with a car audio system characterized by comprising
`the following.
`The 1st bus corresponding to form of CPU contained in said computer.
`The 2nd bus for connecting apparatus contained in said car audio system.
`
`[Claim 8]A computer for mount provided with a car audio system characterized by comprising
`the following.
`A local bus corresponding to form of CPU contained in said computer.
`A PCI bus for connecting apparatus contained in said car audio system.
`
`[Claim 9]The computer for mount according to claim 7 or 8 provided with a means to change
`form of data between said each bus.
`[Claim 10]A computer for mount of any one statement of nine from claim 6 provided with the
`3rd bus for connecting two or more apparatus contained in said car audio system in daisy
`chain form.
`[Claim 11]A control method of a car audio system which controls a car audio system using a
`computer provided with an operating system characterized by comprising the following.
`A step which realizes environment which needs said operating system in order to execute a
`program of form decided beforehand.
`A step by which said program controls said car audio system.
`
`[Claim 123A control method of a car audio system which controls a car audio system using a
`computer characterized by comprising the following.
`A step with which CPU contained in said computer exchanges data through the 1st bus
`corresponding to form of this CPU.
`A step which exchanges data through the 2nd bus for apparatus contained in said car audio
`system to connect apparatus.
`
`[Translation done.]
`
`http://www4.ipdl.inpit.go.jp/cgi-bin/tran_web_cgi_ejje?atw_u=http://www4.ipdl.inpit.go.j... 9/25/2008
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`Page 570 of 1125
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`

`
`JP,U-273321,A [DETAILED DESCRIPTION]
`
`Page 1 of 19
`
`* NOTICES *
`
`JPO and INPIT are not responsible for any
`damages caused by the use of this translation.
`
`1 This document has been translated by computer. So the translation may not reflect the
`original precisely.
`2.**** shows the word which can not be translated.
`3.In the drawings, any words are not translated.
`
`DETAILED DESCRIPTION
`
`[Detailed Description of the Invention]
`[0001]
`[Field of the lnvention]This invention is combining a small computer with general-purpose OS,
`and a car audio system, and relates to the art of harnessing a mutual advantage.
`[0002]
`[Description of the Prior Art]ln recent years, progress with remarkable art of a semiconductor is
`accomplished and the electronic equipment of various fields has become a miniaturization and
`highly efficient by using a semiconductor. Thus, one of the electronic equipment made a
`miniaturization and highly efficient by using a semiconductor has a personal computer
`(henceforth a "personal computer").
`[0003]The small personal computers {it names generically the following "hand-held PC") called
`[ especially ] a handheld computer (carried type), a palm top, etc. these days are also
`increasing in number. Windows(registered trademark of Microsoft Corp.) CE etc. are known,
`for example as base software (it is called below Operating System: "OS") suitable for such a
`hand-held PC, i.e., an operating system.
`[0004]Such a general-purpose OS realizes advanced throughput by managing finely
`throughput, a memory, etc. of CPU which the computer has, or, If it is a program of the form
`which provided the user interface independent of a program which it is unific and is easy to
`use, or was decided beforehand, it has the advantage that the current update of the function of
`a computer can be carried out by carrying out a current update freely.
`[0005]As another electronic equipment which similarly has been made a miniaturization and
`highly efficient by using a semiconductor, the car audio system and car-navigation system
`which are carried in a car are mentioned. Among these, a car audio system is commonly called
`a car stereo etc., and combines the tuner of a CD player, AM, or FM, etc. with amplifier, a
`loudspeaker, etc. A car-navigation system is a shown system to which a screen display of the
`
`http://www4.ipdl.inpit.go.jp/cgi-bin/tran_web__cgicjjc7a1w_u-htLp%3A%2F%2Fwww4.i... 10/21/2008
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`i
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`Page 571 of 1125
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`

`
`JP,! 1-273321,A [DETAILED DESCRIPTION]
`
`Page 2 of 19
`
`map is carried out to the specified destination, pinpointing the current position of a car using an
`azimuth magnet, an odometer, GPS, etc.
`[0006]These days, since a car-navigation system, a handsfree cellular phone, an anti-theft
`alarm system, etc. are combined with a car audio system in many cases, the electronic
`equipment for these mount is hereafter named a "car audio system" generically.
`[0007]
`[Problem(s) to be Solved by the InventionJThe hand-held PC provided with OS which was
`described above, and the car audio system were mutual completely separate in the former.
`That is, although the car audio system which prepared the computer in the large meaning for
`control existed, the computer in this case is called the embedded system which works only for
`the specific purpose.
`[0008]CPU with necessary minimum capability is used for this embedded system, and it
`realizes necessary minimum processing to the hardware of receiving an operation switch or
`operating a disk reproduction mechanism, by the small program using an assembler etc. For
`this reason, usage of carrying out the change addition of the function by carrying out
`processing and preservation of data like a personal computer, or carrying out the change
`addition of the program cannot be done.
`[0009]0n the other hand, it did not have a function which a hand-held PC sounds music itself,
`or controls a car audio system. For this reason, although the user might carry the hand-held
`PC into in the car as a matter of fact, he did not use, having connected with the car audio
`system.
`[0010]By the way, the latest car audio system, Not only in conventional apparatus called the
`tuner, cassette tape deck, and CD player of radio, Many apparatus is increasingly built into the
`condition of an MD player, CD, the autochanger of MD, a car-navigation system, the voice
`recognition equipment that recognizes a user's command, a handsfree cellular phone, and an
`anti-theft alarm system. And it is dramatically difficult to master the car audio system which
`becomes complicated in this way only with the switch in which it was provided by each device.
`[0011]That is, when a car audio system becomes complicated in this way, many switches,
`such as an operation key and a dial, will be in various places in the car. For this reason, it is
`serious to memorize which is what operation key.
`[0012]Namely, in order to master the car audio system which becomes complicated. To use for
`control an information processor equivalent to the hand-held PC provided with the small
`computer with the pliability which can carry out the current update of the function about the
`advanced throughput which controls a complicated system, the user interface, and control
`which are easy to use, and especially general-purpose OS is desired.
`[0013]Even if it thinks from the hand-held PC side, a car is used like the present age in many
`cases, and in the car is wanted to expand the width of practical use in society also with much
`
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`JP,U-273321,A [DETAILED DESCRIPTION]
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`Page 3 of 19
`
`traffic congestion. By combining with a car audio system especially, make an operation key
`and a memory serve a double purpose, or, The information which a user wants to know in the
`car is made to be read out by the synthesized speech using a computer, If usage of hearing
`the voice from the loudspeaker of a car audio system, or accessing an external computer
`network by the circuit of the cellular phone built into the car audio system can be done, the
`width of practical use can be expanded rather than former.
`[00 1 43When combining high-speed CPU which uses general-purpose OS, and apparatus
`which is contained in a car audio system, to have a separate bus suitable for each from the
`difference in both working speed, etc. is desired. In the car audio system which combined a lot
`of apparatus, two or more apparatus is wanted to be easily connectable with simple refreshed
`wiring.
`[OOlSjProposed in order that this invention might solve the problem of conventional technology
`which was described above, it is combining a small computer with general-purpose OS, and a
`car audio system, and the purpose is to harness a mutual advantage. Another purpose of this
`invention is to use two or more buses, and is using both high-speed apparatus of CPU and
`others smoothly without futility. Another purpose of this invention is to connect various
`apparatus one after another with a daisy chain mode.
`[0016]
`[Means for Solving the Problem]ln order to attain the purpose described above, an invention of
`claim 1 equips a car audio system provided with a computer for control with the following.
`A means by which said computer is provided with an operating system and this operating
`system manages resources on a computer.
`A means to control input and output containing a user interface.
`A means to execute a program of form decided beforehand.
`A computer for mount of claim 6 is provided with the following.
`An operating system which realizes environment required in order to execute a program of
`form decided beforehand.
`Car audio system.
`A means to control said car audio system.
`An invention of claim 11 is what caught an invention of claim 1 from a view of a method, In a
`control method of a car audio system which controls a car audio system using a computer
`provided with an operating system, A step which realizes environment which needs said
`operating system in order to execute a program of form decided beforehand, and a step by
`which said program controls said car audio system are included. A computer which controls a
`car audio system by invention of claims 1, 6, and 11 is provided with general-purpose OS, and
`it this general-purpose OS, A user interface which carries out the maximum exertion of the
`capability of a computer by managing resources, such as CPU and a memory, and is not
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`dependent on a program and which it is unific and is easy to use is provided, and an addition
`and change of a function are made easy by adding a program of form decided further
`beforehand, or changing. For this reason, control of a complicated car audio system becomes
`easy. It becomes possible for in the car to use various programs, or to process information
`using apparatus of a car audio system.
`[0017]An invention of claim 2 was provided with the 1st bus corresponding to form of CPU
`contained in said computer, and the 2nd bus for connecting apparatus contained in said car
`audio system in a car audio system provided with a computer for control. An invention of claim
`7 was provided with the 1st bus corresponding to form of CPU contained in said computer, and
`the 2nd bus for connecting apparatus contained in said car audio system in a computer for
`mount provided with a car audio system. An invention of claim 12 is what caught an invention
`of claim 2 from a view of a method, In a control method of a car audio system which controls a
`car audio system using a computer, A step with which CPU contained in said computer
`exchanges data through the 1st bus corresponding to form of this CPU, Apparatus contained
`in said car audio system contains a step which exchanges data through the 2nd bus for
`connecting apparatus. An invention of claim 3 was provided with a PCI bus for connecting
`apparatus contained in said car audio system with a local bus corresponding to form of CPU
`contained in said computer in a car audio system provided with a computer for control. An
`invention of claim 8 was provided with a PCI bus for connecting apparatus contained in said
`car audio system with a local bus corresponding to form of CPU contained in said computer in
`a computer for mount provided with a car audio system. An invention of claim 4 was provided
`with a means to change form of data between said each bus, in the car audio system
`according to claim 2 or 3. An invention of claim 9 was provided with a means to change form of
`data between said each bus, in the computer for mount according to claim 7 or 8. In an
`invention of claims 2, 3, 7, 8, and 12, data is exchanged using a bus CPU of a computer and
`apparatus of a car audio system made the mistake in corresponding to a mutual form, and
`between two buses, if needed, data changes form, wins popularity and is passed (claims 4 and
`9). For this reason, even if operation of CPU is quicker than operation of each apparatus, it is
`not necessary to double CPU with a motion cycle of each apparatus, and complicated
`processing can be performed at high speed by accessing a memory etc. efficiently. Since data
`which CPU exchanges, and data which apparatus exchanges do not scramble for
`communicative competence of the same bus, it can operate smoothly in both a computer and
`a car audio system. Multitasking of performing another processing using a bus corresponding
`to form of CPU becomes easy simultaneously, reproducing a signal of a sound using a bus for
`connecting apparatus. Also when changing CPU into a thing of another form, a bus for
`connecting these apparatus with each apparatus remains as it is, and since what is necessary
`is to change only a bus corresponding to form of CPU according to form of new CPU, it can
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`respond also to change of CPU easily.
`[0018]An invention of claim 5 was provided with the 3rd bus for connecting two or more
`apparatus contained in said car audio system in a car audio system of any one statement of
`four from claim 1 in daisy chain form. An invention of claim 10 was provided with the 3rd bus
`for connecting two or more apparatus contained in said car audio system in a computer for
`mount of any one statement of nine from claim 6 in daisy chain form. In an invention of claims
`5 and 10, two or more apparatus can be connected in daisy chain form one after another, and
`it can die. For this reason, also when the number of apparatus increases or distributed
`installation of the apparatus is carried out here and there [ in the car], long wiring is not
`concentrated in one place like a star method, and installation becomes easy. Since wiring
`becomes intelligible shapely, it also becomes easy to change composition or to carry out
`maintenance and repair.
`[0019]
`[Embodiment of the InventionJNext, an embodiment of the invention (henceforth a
`"embodiment") is concretely described with reference to drawings. Although this embodiment
`is the car audio system provided with various apparatus, such as a CD player, it is provided
`with the computer provided with general-purpose OS which is used for a hand-held PC, and
`also performs control of a car audio system by this computer. The same numerals are attached
`about the member same about each figure used by the following explanation as the figure
`explained before it, or the same kind of member, and explanation is omitted.
`[0020][1. composition]
`[Composition of whole 1-1.] First, drawing 1 is a block diagram showing the entire configuration
`of this embodiment. As shown in this figure, this embodiment as each apparatus which
`constitutes a car audio system other than the main unit 1, It has the tuner amplifier unit 2, the
`microphone 3, the GPS antenna 4, the security control unit 5, the telephone unit 6, the CD-
`ROM autochanger 7, and the auxiliary battery 9 for power supply backup.
`[0021]Among these, the main unit 1 is a portion which builds in the computer for control and
`controls the whole system by this computer. Although the tuner amplifier unit 2 does not carry
`out the graphic display other than the antenna 2a of AM and FM, it is the portion provided with
`a radio tuner and the amplifier for sounding a loudspeaker. The microphone 3 is for inputting a
`user's voice so that operation by speech recognition can be performed. The function of this
`speech recognition is realized by the program of the computer described above.
`[Q022][1-1-1. main unit] The main unit 1 is provided with the socket 13S for inserting
`CompactFlash card 13, and the face plate unit 15 removed [ attach and ] and made (drawing
`1), CompactFlash card 13 is a storage using a flash memory, and data can be written from the
`main unit 1 by inserting in the socket 13S formed in the main unit 1. This CompactFlash card
`13 is used in order to exchange data, a program, etc. with other computers or to back up
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`various information sets in this car audio system.
`[0023]The face plate unit 15 attached, removed and made, It has the indicator which displays
`various information on a user, and the final controlling element which provided the operation
`key for a user to do various operations etc., and is referred to also as DCP (Detachable
`Control Panel). The indicator of this face plate unit 15 is large-sized color LCD (liquid crystal
`display) of 64 dots by 256 dots, etc., for example.
`[0024]if it removes and carries out when getting off a car, even if a thief looks for a car audio
`system, neither use nor resale can do this face plate unit 15, also seeing an important indicator
`not have a final controlling element - there are ** and a theft preventive effect of giving up
`stealing, if the removed face plate unit 15 is put into the case 15a and it carries around, it will
`damage neither itself nor a surrounding thing.
`[0025]Although this face plate unit 15 is not shown in drawing 1, it is provided with the infrared-
`ray-communication unit for exchanging data in the form of the hand-held PC 8, IrDA, etc.
`[0026][Apparatus] besides 1-1-2. The GPS antenna 4 is an antenna for receiving an electric
`wave from a GPS Satellite. The signal from this GPS antenna 4 is sent to the GPS unit in the
`main unit 1 through GPS receiver 4a. Although this GPS unit is not shown in drawing 1, it
`calculates the position on the earth with a receiver from an electric wave. On the computer
`described above, by a program, the function of a car-navigation system is realized and a
`calculation result is passed to the function of this car-navigation system.
`[00273The security control unit 5 is the sensor 5a which detects vibration and a shock, and
`when a theft, a mischief, etc. are detected, it is a portion which carries out correspondence of
`sounding the siren 5b. The telephone unit 6 is a unit which controls the function of a car
`telephone, and is a portion which realizes the telephone call using the telephone antenna 6a or
`the hand set 6b. The CD-ROM autochanger 7 is hanging automatically some CDs set
`beforehand again, and is a unit which plays the disk which the user chose, and music.
`[0028][1-1-3. daisy chain connection] Here, these security control unit 5, the telephone unit 6,
`and the CD-ROM autochanger 7 are connected to the main unit 1 by USB (Universal Serial
`Bus). This USB is a serial bus (the 3rd bus) for connecting two or more apparatus in daisy
`chain form.
`[0029]The apparatus connected by USB in this way comprises this embodiment so that data
`with the exterior may be exchanged in the form of this USB. For example, the CD-ROM
`autochanger 7, Although it has the hub (HUB) the object for upstreams, and for downstreams
`and digital data is once read from an audio CD or CD-ROM according to ATAPI form (parallel
`form) inside this CD-ROM autochanger 7, After the read data is changed into the USB
`(Universal Serial Bus) form which is serial form by the data converter built in, it is sent out to
`USB.
`[0030]The installation becomes easy when installing these units 5, 6, and 7 in the place distant
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`from the main unit 1, since connection of the units 5 and 6 and the CD-ROM autochanger 7
`turns into serial connection with such composition. Although connected in order of the unit 5,
`the unit 6, and the autochanger 7 in drawing 1, connection order is good also as connection of
`only arbitrary and required things.
`[0031]|The internal configuration of a 1-2. main unit] Next, drawing 2 is a block diagram
`showing the main things among each portion described above, and is especially explained
`focusing on the concrete composition of main unit 1 inside. This whole figure is divided into
`four with the dashed line, in the left, CPU module 11 and a center become the support module
`12, the upper right becomes the external unit 30, and the lower right has become the option
`unit 40. Among these, CPU module 11 and the support module 12 are formed in the inside of
`the main unit 1.
`[0032]The external unit 30 and the option unit 40 have pointed out collectively the apparatus of
`every some connected to the main unit 1. On account of explanation, CompactFlash card 13 is
`shown in the direction under CPU module 11, and drawing 2 shows the face plate unit 15 to
`the direction on the external unit 30.
`[0033]Among these, CPU module 11 and the support module 12 constitute the computer for
`control which controls the whole car audio system. Among these, CPU module 11 is a portion
`which carries out logical data processing centering on CPU111, and the support module 12 is
`a portion which performs input and output with other apparatus contained in a car audio
`system.
`[0034]The local bus B1 (the 1st bus) formed considering CPU111 as a center is a way with
`CPU module 11 as [ main ] data. PCI (Peripheral Component Interconnect) for that it is a way
`by the support module 12 as [ main ] data to connect each apparatus on the other hand it is
`bus B-2 (the 2nd bus).
`[0035][Composition of a 1-2-1. CPU module] The local bus B1 of CPU module 11, It is what
`was doubled with the form of CPU 111, and DRAM 112, the flash ROM 113, the PCI bus host
`controller 114, CPU host ASIC115, and PCMCIA-ASIC116 are connected to this local bus B1.
`Among these, DRAM112 is a portion which provides work areas, such as a variable area,
`when CPU111 processes information in control of a car audio system, etc.
`[0036]The flash ROM 113 is rewritable ROM and is a portion which stores the software in large
`meanings, such as OS, BIOS, and an application program, here. The function of OS stored
`here manages the resources on a computer, It is controlling the input and output containing a
`user interface, executing the program of the form decided beforehand, etc., for example, what
`used as the base Windows CE which conventional technology described by the way can be
`considered.
`[0037]The PCI bus host controller 114 is a means to change the form of the data which
`connects the local bus B1 and PCI bus B-2, and is exchanged between these two buses.
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`E0038]"ASIC"1 such as CPU host ASIC115, is the abbreviation for Application Specific
`Integrated Circuit, and points out IC and LSI which were made for specific uses to general-
`purpose integrated circuits, such as ROM, RAM, and CPU. Specifically, this CPU host
`ASIC115 is ASiC for the interface of the local bus B1 and the PCI bus host controller 114. This
`CPU host ASIC115 [ that is, ], Betwe