TRANSLATOR CERTIFICATION
`
`County of New York
`State of New York
`
`Date: September 15, 2016
`
`To whom it may concern:
`
`I, Dr. Warren Smith, a translator fluent in the Japanese and English languages, on behalf of
`Morningside Translations, do solemnly and sincerely declare that the following is, to the best of
`my knowledge and belief, a true and correct translation of the document(s) listed below in a
`form that best reflects the intention and meaning of the original text.
`
`The documents are designated as:
`Japanese Unexamined Patent Application Publication No.: JP H4-15853
`
`
`I declare that all statements made herein on my own knowledge are true and that all
`statements made on information and belief are believed to be true, and further, that these
`statements were made with the knowledge that willful false statements and the like so made
`are punishable by fine or imprisonment, or both, under Section 1001 of Title 18 of the United
`States Code.
`
`Signature of Dr. Warren Smith
`
`Papst Licensing GmbH & Co., KG.
`Petitioner - Apple, Inc.
`Patent Owner - Papst Licensing GmbH & Co., KG.
`IPR2016-01839
`EXH. 2004
`
`1
`
`

`

`(19) Japan Patent Office (JP)
`
`(11) Japanese Unexamined Patent
`Application Publication Number
`
`(12) Japanese Unexamined Patent
`Application Publication (A)
`
`H4-15853
`
`(51) Int. Cl.5
`
`Identification codes
`
`JPO file numbers
`
`(43) Publication date January 21, 1992
`
`G 06 F 13/36
`
`320 A
`
`7052—5B
`
`Request for examination: Requested
`
` Number of claims: 1 (Total of 6 pages)
`
`(54) Title of the invention
`
`SCSI DEVICE ADAPTER
`
`(21) Japanese Patent Application
`
`H2-120493
`
`(72) Inventor
`
`(22) Date of Application
`
`KAWAGUCHI, Noboru
`
`(72) Inventor
`
`GOTO, Mitsutoshi
`
`(71) Applicant
`
`Sanyo Machine Works, Ltd.
`
`(74) Agent
`
`Patent attorney EHARA, Shogo
`
`May 9, 1990
`
`℅ Sanyo Machine Works, Ltd.
`1 Oka, Okimura, Nishiharu-machi, Nishi Kasugai-
`gun, Aichi Prefecture
`
`℅ Sanyo Machine Works, Ltd.
`1 Oka, Okimura, Nishiharu-machi, Nishi Kasugai-
`gun, Aichi Prefecture
`
`1 Oka, Okimura, Nishiharu-machi, Nishi Kasugai-
`gun, Aichi Prefecture
`
`SPECIFICATION
`
`1. TITLE OF THE INVENTION
`SCSI Device Adapter
`2. SCOPE OF PATENT CLAIMS
`(1) A SCSI device adapter, comprising:
`a SCSI interface that is connected to a SCSI
`interface for connecting an EWS (Engineering
`WorkStation) device;
`a device interface for connecting to a peripheral
`device;
`a data writing portion, a data reading portion, a
`control data writing portion, and an interrupt data
`reading portion that are identified with different ID
`numbers (or with identical ID numbers and different
`unit numbers) from the EWS through the SCSI
`interface;
`a code converting portion for converting data
`between a SCSI format and a peripheral device bus
`format, positioned between the data writing portion
`and data reading portion and a device interface;
`a controlling portion for controlling sending and
`the EWS and
`the
`receiving of data between
`peripheral device, carried out
`through relaying
`through the data writing portion and reading portion;
`and
`an interrupt controlling device for outputting, to the
`EWS, through the SCSI interface, a disconnect signal
`when, for an interrupt data read command sent from
`
`the EWS, the interrupt data is not ready in the
`interrupt data reading portion, to release the EWS
`circuit, and for sending, to the EWS, through the
`SCSI interface, a reconnect signal when interrupt
`data has been inputted from the interrupt data reading
`portion thereafter, to enable the EWS to read out the
`interrupt data.
`3. DETAILED EXPLANATION OF THE INVENTION
`[STAMP INDICATING THAT THIS IS A VALID
`AMENDMENT TO A DIFFERENT SPELLING OF
`THE SAME MESSAGE]
`[AREA OF USE IN INDUSTRY]
`The present invention relates to a general-use SCSI
`device able to connect easily PC peripheral devices
`and devices such as sequencers to a SCSI interface of
`an EWS (Engineering WorkStation).
`[PRIOR ART AND PROBLEM SOLVED BY THE PRESENT
`INVENTION]
`Engineering workstations, given their multi-tasking,
`multi-windowing processing and comparatively
`inexpensive equipment structure enable high-speed
`data processing, and are used by consumers.
`An EWS is equipped with a SCSI interface, as a
`standard interface, for the purpose of connecting a
`hard disk or a magnetic tape device. However, it does
`not have a slot for an expansion board, such as in a
`PC. Consequently, it has not been possible to connect
`directly, to an EWS, output devices such as plotters,
`or sequencers, or the like, that have a PC I/O bus or a
`
`2
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`

`

`Japanese Unexamined Patent Application Publication H4-15853 (2)
`
`bidirectional parallel bus with interrupts, which are
`PC-compatible buses. That is to say, because the
`existing EWS has only an initiator function, adapters
`cannot be wired and connected to an EWS.
`Note that while a personal computer has a high
`degree of flexibility in connecting peripheral devices
`through the use of expansion slots, the processing
`uses a single stack, so the processing speed is slow
`and impractical. Moreover, while high-end EWSs are
`provided with specialized buses for connecting
`peripheral devices, they are compatible only with
`specific devices, and are unable to connect freely to
`arbitrary devices, and
`the system structure
`is
`extremely expensive.
`If peripheral devices that have PC-compatible
`buses are to be connected to EWSs, then a code
`converter for converting codes between [those of] the
`SCSI interface that is the standard equipment that is
`designed compatible with the existing hard disks, and
`[those of] the GPIB interface, for example, that is a
`PC-compatible bus, should be manufactured.
`However, the existing SCSI interface that is
`designed for hard disk use has no interrupt function,
`and thus cannot be connected to a device that requires
`interrupts to be applied to the host side, such as a
`sequencer, or the like.
`Given this, the object of the present invention is to
`provide a general-use SCSI device adapter that can
`easily connect a peripheral device that has a standard
`bus that is different from that of an SCSI bus, such as
`a PC-compatible bus, or the like, to the SCSI
`interface of an EWS that was built for the purpose of
`connecting with a hard disk, and, in particular, to
`provide a general-use SCSI device adapter that can
`apply an interrupt from the peripheral device side.
`[MEANS FOR SOLVING THE PROBLEM]
`The present invention provides a SCSI device
`adapter, comprising: a SCSI
`interface
`that
`is
`connected to a SCSI interface for connecting an EWS
`(Engineering WorkStation) device; a device interface
`for connecting to a peripheral device; a data writing
`portion, a data reading portion, a control data writing
`portion, and an interrupt data reading portion that are
`identified with different ID numbers (or with
`identical ID numbers and different unit numbers)
`from the EWS through the SCSI interface; a code
`converting portion for converting data between a
`SCSI format and a peripheral device bus format,
`positioned beteen the data writing portion and data
`reading portion and a device interface; a controlling
`portion for controlling sending and receiving of data
`between the EWS and the peripheral device, carried
`out through relaying through the data writing portion
`and reading portion; and an interrupt controlling
`device for outputting, to the EWS, through the SCSI
`interface, a disconnect signal when, for an interrupt
`
`data read command sent from the EWS, the interrupt
`data is not ready in the interrupt data reading portion,
`to release the EWS circuit, and for sending, to the
`EWS, through the SCSI interface, a reconnect signal
`when interrupt data has been inputted from the
`interrupt data reading portion thereafter, to enable the
`EWS to read out the interrupt data.
`[OPERATION]
`The SCSI device adapter performs input/output of
`data to/from an EWS SCSI interface through the
`same standard as the SCSI interface for a hard disk,
`the EWS to write and read arbitrary data to/from four
`types of data writing portions and reading portions
`that function as data relays with the peripheral device.
`Moreover, this SCSI device adapter performs input
`and output of data to/from the peripheral device
`through the interface for the device through the bus
`standard of that device, and converts the data thereof,
`through the code converting portion, to data of the
`SCSI standard, to input/output to/from the four types
`of data writing portions and reading portions.
`When there is no data ready in the interrupt data
`reading portion in response to an interrupt data read
`command from the EWS, the interrupt controlling
`portion uses a SCSI-standard Disconnect signal and
`Reconnect signal to release the EWS line, and then,
`thereafter, cause the data to be read out once the data
`is ready.
`This operation enables a device that requires
`interrupts to be connected to the SCSI interface of an
`EWS that was designed for connecting a hard disk,
`through causing a virtual interrupt operation, in a
`SCSI interface for an EWS that has not been
`designed for interrupts.
`[EMBODIMENTS]
`An example of a structure wherein a peripheral
`device is connected to an EWS using a SCSI
`interface converter according to one embodiment
`according to the present invention will be explained
`using FIG. 1.
`In this figure, (1) is a relatively inexpensive EWS
`(Engineering WorkStation) of a desktop type, and has,
`as standard equipment, a SCSI interface (2) for
`connecting a hard disk. (3) is a SCSI device adapter
`that is assembled in a single board, peripheral devices,
`such as, for example, an output device (4), such as a
`plotter, an input device (5), such as a CD-ROM, and
`a device (6) that carries out interrupt control of a
`sequencer, or the like, are connected to the EWS (1).
`The SCSI device adapter (3) has a SCSI interface
`(7) for connecting to the EWS (1), and has, as a
`device interface for connecting peripheral devices,
`PC I/O bus interfaces (8) and (9), and a bidirectional
`interrupt-capable
`parallel
`bus
`interface
`(10).
`Moreover, in the SCSI device adapter (3), a data
`writing portion (11), a data reading portion (12), a
`
`3
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`

`Japanese Unexamined Patent Application Publication H4-15853 (3)
`
`control data writing portion (13), and an interrupt
`data reading portion (14) that are identified with
`different ID numbers N, N + 1,…, N + 3 (or with
`identical ID numbers and different unit numbers N, N
`+ 1,…, N + 3) through the SCSI interfaces (2) and (7)
`from the EWS (1), a code converting portion (15) for
`converting to a data format between the SCSI
`standard and a bus standard of the interface for the
`device, between the individual data writing portions
`and data reading portions (11), (12), (13), and (14)
`and the device interfaces (8), (9), and (10), a
`controlling portion (16) for controlling sending and
`receiving of data between
`the EWS and
`the
`peripheral device that is carried out relayed by the
`aforementioned data writing and reading portions;
`and an
`interrupt controlling portion
`(17)
`for
`generating a control signal so as to enable the EWS
`(1) to receive an interrupt signal from a device
`through the SCSI interfaces (2) and (7) without
`interrupting processing, are structured
`from a
`microcomputer, a ROM, and a RAM.
`Note that the device interface of the SCSI device
`adapter (3) may also use, depending on the connected
`device, other types of I/O bus interfaces (8) and (9)
`and
`interrupt-compatible
`parallel
`bidirectional
`interfaces (10) from those described above. For
`example, an A/D converter (19) able to input analog
`data from an analog device (18), such as a sensor,
`may be built in. Here the device interface may be an
`RS-232, a standard interface such as a Centronics or
`VME bus, or a specialized interface such as an
`expansion bus of a specific PC.
`The EWS device adapter (3), structured as
`described above, operates as follows.
`The SCSI interface of the EWS (1) is designed so
`as to enable connection of up to 8 hard disks. Given
`this, in the present invention ID numbers (or a single
`ID number with different unit numbers) (N, N + 1,…,
`N + 3) are assigned to the individual writing portions
`and reading portions (11) through (14) so as to enable
`identification, as perceived by the EWS (1), of the
`data writing portion of (11), the data reading portion
`(12), the control data writing portion (13), and the
`interrupt data reading portion (14), as four of those
`hard disk devices. That is, the EWS (1) merely
`operates by reading from, or writing to, the individual
`writing portions and reading portions using the same
`procedure as for four hard disk devices.
`On the other hand, the controlling portion (16)
`controls the inputting and outputting of data from/to
`the peripheral devices (4), (5), and (6) through the
`device interfaces (8), (9) and (10). That is, it outputs,
`to an output device (4) such as a plotter, the data that
`is written to the data writing portion (11), inputs, into
`the data reading portion (12) the data that has been
`written in from an input device (5), such as a CD-
`
`ROM, or the like, outputs, to the device (6) that
`carries out interrupt control, such as a sequencer, data
`that has been written to the control data writing
`portion (13), and inputs, into the interrupt data
`reading portion (14), interrupt data from the device
`(6) that carries out interrupt control. The input/output
`control of the controlling portion (17) is carried out
`with prescribed
`timing
`through decoding of
`commands sent from the EWS (1). Note that in the
`exchange of data between the device interfaces (8),
`(9), and (10) and the individual data writing portions
`and reading portions (11), (12), (13), and (14), code
`conversion between the SCSI standard and the
`various bus standards is carried out through the
`interposition of the code converting portion (15).
`Moreover, even if the device interfaces (8), (9), and
`(10) each have respective pluralities of channels,
`control is possible through the code converting
`portion (15), the controlling portion (16), and the
`interrupt controlling portion (17).
`In the present invention, the EWS (1) recognizes
`the individual writing portions and reading portions
`(11), (12), (13), and (14) as individual devices, and
`thus, in the EWS (1), the processing efficiency is
`high, as the different writing programs and reading
`programs for the individual writing portions and
`reading portions (11), (12), (13), and (14) are
`launched simultaneously and processed in parallel.
`The major distinctive feature of
`the present
`invention is that virtual interrupts are caused to be
`carried out, from the device side, in the SCSI
`interface (2) of an EWS (1) that was not designed for
`interrupts. That is, when there is a read command
`from the EWS (1) to the interrupt data reading
`portion (14), if interrupt data is not ready (where,
`unlike the case wherein data is ready in response to a
`read command from the EWS (1) in a CD-ROM
`inputting device (1), here the interrupt is made with
`unspecified timing depending on the status on the
`device side, so often the interrupt data is not ready),
`the
`interrupt controlling portion (17) sends a
`Disconnect signal to the EWS (1) to release the EWS
`circuit. This enables the EWS (1) to carry out other
`processes. When, thereafter, interrupt 12 data is ready
`in the interrupt data reading portion (14), the interrupt
`controlling portion (17) sends a Reconnect signal to
`the EWS (1). The EWS (1) that has received this
`signal carries out interrupt data reading, to complete
`the reading of the interrupt data by the EWS (1).
`The operation described above will be explained in
`the series of operations in the SCSI driver (software)
`of the EWS (1). The EWS SCSI driver was
`developed as a driver for connecting a hard disk. As a
`result, the device of the present invention acts as an
`emulation of a hard disk. The procedure sequence is
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`

`Japanese Unexamined Patent Application Publication H4-15853 (4)
`
`performed following the flowchart illustrated in
`FIG. 2.
`In this flowchart, the "Start" through "Mode Sense"
`is
`the hard disk
`initializing procedure, where
`"Inquiry" is information for the properties of the
`target and logical unit (the device type identification
`code); the "Start/Stop unit" starts/stops the logical
`unit; the "Test Unit Ready" is a test of whether or not
`the logical unit is in a usable state; and the "Mode
`Sense" is information for the various parameter
`values (data format and structure of the recording
`medium). Through
`this,
`the
`individual writing
`portions and reading portions (11), (12), (13), and
`(14) go into an active state, relative to the EWS (1).
`After the initializing sequence, the EWS (1)
`executes reading from, or writing to, the individual
`writing portions and reading portions (11), (12), (13),
`and (14). Specifically, the "Read Extended" reads out
`a specified block, that is, reads the data reading
`portion (12) or the interrupt data reading portion (14),
`and the "Write Extended" writes data to a specified
`block, that is, writes data to the data writing portion
`(11) or the control data writing portion (13).
`Because the procedure above uses the SCSI
`standard, the present device can be connected to the
`SCSI interface of an EWS (1) easily, with essentially
`no modification.
`In this standardized procedure, the explanation will
`be for a procedure for carrying out control of a device
`that has various types of interfaces, such as, for
`example, those that are PC-compatible. The control
`of the various types of devices is divided into writing
`to memory, writing commands, and reading interrupt
`signals from the device. In the device according to
`the present invention, the various functions are
`divided among the four units that are the writing
`portions and the reading portions (11), (12), (13), and
`(14), and thus, in the EWS, programs for both writing
`and reading are activated simultaneously. Among
`these functions, the reading of interrupt data is
`carried out as in the flowchart illustrated in FIG. 3,
`enabling virtual interrupts in a SCSI interface that
`was not designed for interrupts.
`At first, a read command is outputted by the EWS
`to the interrupt data reading portion (14). This
`reading must be performed periodically
`in
`anticipation of the timing with which the device
`produces interrupts. At this time, usually no interrupt
`data will be ready, so the interrupt controlling portion
`
`(14) sends a Disconnect signal to the EWS (1) to
`release the line of the EWS (1), to enable it to carry
`out other processing. Following this, when a device
`interrupt is produced and the interrupt data is ready,
`the interrupt controlling portion (17) outputs a
`Reconnect signal to the EWS (1), to cause the EWS
`(1) to read in the interrupt data from the interrupt data
`reading portion (14). When transmission of the
`interrupt data to the EWS (1) has been completed,
`then, in the EWS (1), the execution of the read
`command is completed.
`[EFFECTS OF THE INVENTION]
`Given the present invention, a device that has an
`interface that requires interrupts can be connected
`easily to a SCSI interface in an EWS that was not
`designed for interrupts.
`Moreover, in this invention, four writing portions
`and reading portions are provided that are identified
`as different logical devices when reading/writing data,
`writing commands, and reading
`interrupt data
`between the EWS and the device, enabling high-
`speed processing
`through being able
`to start,
`simultaneously, programs for writing and reading in
`the EWS.
`4. BRIEF DESCRIPTIONS OF THE DRAWINGS
`FIG. 1 is a block diagram of a SCSI device adapter
`according to one embodiment according to the
`present invention, connected between an EWS and a
`device; FIG. 2 is a flowchart illustrating an operating
`procedure of an EWS in connection to FIG. 1; and
`FIG. 3 is a flowchart illustrating an interrupt data
`reading procedure in the configuration in FIG. 1.
`(1): EWS
`(2), (7): SCSI Interface
`(3): SCSI Device Adapter
`(4), (5), (6): Peripheral Device
`(8), (9), (10): Device Interfaces
`(11): Data Reading Portion
`(12): Data Writing Portion
`(13): Control Data Writing Portion
`(14): Interrupt Data Reading Portion
`(15): Code Converting Portion
`(16): Controlling Portion
`(17): Interrupt Controlling Portion
`
`Patent Applicant: Sanyo Machine Works, Limited
`Agent: EHARA, Shogo [illegible seal]
`
`5
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`

`Japanese Unexamined Patent Application Publication H4-15853 (5)
`
`FIG. 1
`
`6
`
`

`

`Japanese Unexamined Patent Application Publication H4-15853 (6)
`
`FIG. 2
`
`7
`
`

`

`Japanese Unexamined Patent Application Publication H4-15853 (7)
`
`FIG. 3
`
`8
`
`