United States Patent p>
`5,684,607
`Matsumoto
`[45] Date of Patent:
`Nov. 4, 1997
`
`[11] Patent Number:
`
`US005684607A
`
`[54] FACSIMILE APPARATUS USING A SMALL
`COMPUTER SYSTEM INTERFACE
`
`[75]
`
`Inventor: Naoyuki Matsumoto, Yokohama, Japan
`
`[73] Assignee: Canon Kabushiki Kaisha, Tokyo,
`Japan
`
`[21] Appl. No.: 337,234
`
`[22] Filed:
`
`Nov. 4, 1994
`
`Related U.S. Application Data
`
`[63] Continuation of Ser. No. 889,199, May 28, 1992, aban-
`doned.
`.
`
`[30]
`
`Foreign Application Priority Data
`
`Jun. 35,1991
`[JP]
`Japan oneeeesescocceesonssensees 3-134076
`FST]
`Tint. C16 occcsccccccsssscecccenseees HO4N 1/32; HO4N 1/40
`[52] U.S. CD. ecccccsssssssssssscesses 358/442; 358/403; 358/404;
`358/444; 358/468
`[58] Field of Seareha o.cccccsseccscsscccsccssccssssseess 358/403-405,
`358/434-436, 441, 442, 444, 468, 448,
`500, 527, 400, 443; 379/100 R; HO4N 1/42,
`1/21, 1/00, 1/40, 1/32
`
`[56]
`
`References Cited
`
`U.S. PATENT DOCUMENTS
`
`~ 17826R
`11/1975 Bishop et al.
`3,920,896
`
`« 358/256
`3/1987 Kashiishi
`.
`4,652,933
`4,786,974 L1/1988 Ima...sescsssssssnesneeneesseseeeeoveees 358/257
`
`3/1990 Mishimaetal. ......cessssssssseneeee 358/437
`4,907,094
`4/1991 Kanno...ssssssssssesssecsssecsersesenrs 382/56
`5,010,581
`6/1991 Kita etal. ...
`woe 398/468
`5,021,892
`11/1992 LoCascio........
`wee 358/442
`5,163,088
`3/1993 Hersee et al. .......
`ree 379/100
`5,196,943
`5,270,833 12/1993 Kubokawaet al... 379/100
`
`
`
`FOREIGN PATENT DOCUMENTS
`
`3306520
`2166620
`
`9/1983 Germany .
`5/1986 United Kingdom .
`
`Primary Examiner—John K. Peng
`Assistant Examiner—John W. Miller
`Attorney, Agent, or Firm—Fitzpatrick, Cella, Harper &
`Scinto
`
`[57]
`
`ABSTRACT
`
`A facsimile apparatus having a scanner for reading original
`images, a memory for storing images, a printer for recording
`images, and a communication control section for controlling
`the transmission/reception of data with a receiving commu-
`nication apparatus is connected to a host computer via a
`small computer system interface (SCSI). As a result, the
`scanner, the memory, the printer and the communication
`control apparatus provided in the facsimile apparatus can be
`controlied from the host computer. Data can be transferred
`between the host computer and the facsimile apparatus at a
`higher speed, and the scanner, the memory, the printer and
`the communication control apparatus can be effectively
`controlled from the host computer. Thus, various kinds of
`applications can be realized.
`
`68 Claims, 29 Drawing Sheets
`
`j
`
`CPU
`
`IMAGE READING SECTION (SCANNER)
`
`6
`
`
`
`2 IMAGE RECORDING SECTION (PRINTER)|7
`
`LINE CONTROL
`SECTION
`
`8
`
`9
`
`13
`
`14
`
`19
`
`INTERFACE SECTION
`WITH HOST COMPUTER
`
`HOST COMPUTER
`
`10
`
`1 1
`
`2
`
`FILE MANAGEMENT
`SECTION
`
`STORAGE DEVICE
`
`OPERATION SECTION
`
`3
`
`4
`
`IMAGE MEMORY
`
`5
`
`IMAGE CONVERSION
`SECTION
`
`HUAWEI EX. 1208 - 1/43
`
`Canon Exhibit 1208
`Page 1
`
`Canon Exhibit 1208
`Page 1
`
`HUAWEI EX. 1208 - 1/43
`
`

`

`U.S. Patent
`
`Nov. 4, 1997
`
`Sheet 1 of 29
`
`5,684,607
`
` £°OSS1LNIYd)NOILISSONIGNOISYJOVWI 9(YANNVOS)
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`HUAWEI EX. 1208 - 2/43
`
`Canon Exhibit 1208
`Page 2
`
`Canon Exhibit 1208
`Page 2
`
`HUAWEI EX. 1208 - 2/43
`
`
`
`
`
`
`
`

`

`US. Patent
`
`Noy. 4, 1997
`
`Sheet 2 of 29
`
`5,684,607
`
`FIG 2
`
`FAX
`
`ENTIRE LOGIC UNIT(LUN=a)
`
`21
`
`SCANNER
`
`(LUN=b)
`
`22
`
`PRINTER
`
`(LUN=c)
`
`23
`
`IMAGE MEMORY (LUN=d)
`
`24
`
`LINE UNIT
`
` (LUN=e)
`
`25
`
`HUAWEI EX.1208 - 3/43
`
`Exhibit 1208
`
`Canon Ex bt1208
`
`Canon Exhibit 1208
`Page 3
`
`HUAWEI EX. 1208 - 3/43
`
`

`

`US. Patent
`
`Nov. 4, 1997
`
`Sheet 3 of 29
`
`5,684,607
`
` S307
`
`LOGIC INIT
`COMMAND?
`
`YES JENTIRETY LOGIC
`COMMAND PROCESS
`
`ON
`
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`5302
`<< SCANNER
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`
`3306
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`
`HUAWEI EX.1208 - 4/43
`
`Canon Exhibit 1208
`
`Page 4
`
`Canon Exhibit 1208
`Page 4
`
`HUAWEI EX. 1208 - 4/43
`
`

`

`US. Patent
`
`—
`
`Noy. 4, 1997
`
`Sheet 4 of 29
`
`5,684,607
`
`LOGIC UNIT
`COMMAND
`PROCESSING
`
`ENTIRETY
`
`
`
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`
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`HUAWEI EX.1208 - 5/43
`
`Canon Exhibit 1208
`
`Page 5
`
`Canon Exhibit 1208
`Page 5
`
`HUAWEI EX. 1208 - 5/43
`
`

`

`US. Patent
`
`Nov. 4, 1997
`
`Sheet 5 of 29
`
`5,684,607
`
` SCANNER
`
`
`
`
`COMMAND
`PROCESSING
`
`FIG. S-|
`
`PARAMETER
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`
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`
`HUAWEI EX.1208 - 6/43
`
`Exhibit 1208
`
`Canon Ex bt1208
`
`Canon Exhibit 1208
`Page 6
`
`HUAWEI EX. 1208 - 6/43
`
`

`

`U.S. Patent
`
`Nov. 4, 1997
`
`Sheet 6 of 29
`
`5,684,607
`
`FIG. 5-2
`
`(A)
`
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`
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`
`HUAWEI EX. 1208 - 7/43
`
`Exhibit 1208
`
`Canon Ex bt1208
`
`Canon Exhibit 1208
`Page 7
`
`HUAWEI EX. 1208 - 7/43
`
`

`

`U.S. Patent
`
`Nov. 4, 1997
`
`Sheet 7 of 29
`
`5,684,607
`
`
`
`PRINTER
`COMMAND
`PROCESSING
`
`
`
`
`
`
`
`
`
`SEND OUT
`
`CONFIRMATION
`STATUS
`
`
`
`HUAWEI EX. 1208 - 8/43
`
`Canon Exhibit 1208
`Page 8
`
`Canon Exhibit 1208
`Page 8
`
`HUAWEI EX. 1208 - 8/43
`
`

`

`US. Patent
`
`Nov. 4, 1997
`
`Sheet 8 of 29
`
`5,684,607
`
`$603
`~~
`
`stop
`COMMAND ?
`
`$630
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`
`HUAWEI EX. 1208 - 9/43
`
`Canon Exhibit 1208
`Page 9
`
`Canon Exhibit 1208
`Page 9
`
`HUAWEI EX. 1208 - 9/43
`
`

`

`U.S. Patent
`
`Nov. 4, 1997
`
`Sheet 9 of 29
`
`5,684,607
`
`FIG. 7-|
`
`IMAGE MEMORY
`COMMAND
`
`
`
`
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`
`HUAWEI EX. 1208 - 10/43
`
`Canon Exhibit 1208
`Page 10
`
`Canon Exhibit 1208
`Page 10
`
`HUAWEI EX. 1208 - 10/43
`
`

`

`US. Patent
`
`Nov. 4, 1997
`
`Sheet 10 of 29
`
`5,684,607
`
`FIG. 7-2
`
`
`
`SEND OUT CONFIR-
`
`MATION STATUS
`
`
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`5732
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`FILE ENTRY
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`
`HUAWEI EX. 1208 - 11/43
`
`Canon Exhibit 1208
`Page 11
`
`Canon Exhibit 1208
`Page 11
`
`HUAWEI EX. 1208 - 11/43
`
`

`

`U.S. Patent
`
`Nov. 4, 1997
`
`Sheet 11 of 29
`
`5,684,607
`
`
`
`RECEIVE FILE
`
`
`SPECIFICATION
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`
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`
`HUAWEI EX. 1208 - 12/43
`
`Canon Exhibit 1208
`Page 12
`
`Canon Exhibit 1208
`Page 12
`
`HUAWEI EX. 1208 - 12/43
`
`

`

`U.S. Patent
`
`Nov. 4, 1997
`
`Sheet 12 of 29
`
`5,684,607
`
`FIG. 7-4
`
`5760.
`
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`
`HUAWEI EX. 1208 - 13/43
`
`Canon Exhibit 1208
`Page 13
`
`Canon Exhibit 1208
`Page 13
`
`HUAWEI EX. 1208 - 13/43
`
`

`

`US. Patent
`
`Nov. 4, 1997
`
`Sheet 13 of 29
`
`5,684,607
`
`
`
`COMMUNICATION
`COMMAND
`
`
`
`FIG. 8-I
`
` OPERATION
`
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`
`
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`
`HUAWEIEX.1208 - 14/43
`
`Canon Exhibit 1208
`
`Page 14
`
`Canon Exhibit 1208
`Page 14
`
`HUAWEI EX. 1208 - 14/43
`
`

`

`U.S. Patent
`
`Nov. 4, 1997
`
`Sheet 14 of 29
`
`5,684,607
`
`FIG. 8-2.
`
`$804
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`HUAWEIEX.1208 - 15/43
`
`Exhibit 1208
`
`Canon Ex bt1208
`
`Canon Exhibit 1208
`Page 15
`
`HUAWEI EX. 1208 - 15/43
`
`

`

`U.S. Patent.
`
`Noy. 4, 1997
`
`Sheet 15 of 29
`
`5,684,607
`
`FIG. 8-3
`
`3881
`
`CQMMAND?
`
`TRANSMISSION
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`
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`
`HUAWEIEX.1208 - 16/43
`
`.
`
`ibit 1208
`
`Canon Exhibit1208
`
`Canon Exhibit 1208
`Page 16
`
`HUAWEI EX. 1208 - 16/43
`
`

`

`US. Patent
`
`Nov. 4, 1997
`
`Sheet 16 of 29
`
`5,684,607
`
`
`
`
`RECEPTION
`REQUEST
`COMMAND?
`
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`
`HUAWEI EX. 1208 - 17/43
`
`Canon Exhibit 1208
`Page 17
`
`Canon Exhibit 1208
`Page 17
`
`HUAWEI EX. 1208 - 17/43
`
`

`

`US. Patent
`
`Nov. 4, 1997
`
`Sheet 17 of 29
`
`5,684,607
`
`FIG. 9
`
`TRANSMISSION
`
`31001
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`
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`
`HUAWEI EX. 1208 - 18/43
`
`Canon Exhibit 1208
`Page 18
`
`Canon Exhibit 1208
`Page 18
`
`HUAWEI EX. 1208 - 18/43
`
`

`

`US. Patent
`
`Nov. 4, 1997
`
`Sheet 18 of 29
`
`5,684,607
`
`FIG. 10
`
`SESSION MODE
`TRANSMISSION
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`
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`
`HUAWEIEX.1208 - 19/43
`
`hibit 1208
`
`Canon Ex bit1208
`
`Canon Exhibit 1208
`Page 19
`
`HUAWEI EX. 1208 - 19/43
`
`

`

`U.S. Patent
`
`Nov. 4, 1997
`
`Sheet 19 of 29
`
`5,684,607
`
`FIG.
`
`Il
`
`RECEPTION
`REQUEST
`PROCESSING
`
`51201
`
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`CONFIRMATION
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`
`HUAWEI EX. 1208 - 20/43
`
`Canon Exhibit 1208
`Page 20
`
`Canon Exhibit 1208
`Page 20
`
`HUAWEI EX. 1208 - 20/43
`
`

`

`Nov. 4, 1997
`
`Sheet 20 of 29
`F | G. le- |
`
`5,684,607
`
`US. Patent
`CALL
`
`
`POLLING
`OPERATION
`
`
`51301
`
`CONFIRMED?
`STSCONNERTING
`
`OPERATION
`
`CALLING
`OPERATION
`
` STATUS
`
`
`
` NG
`
`$1302
`
`SEND OUT
`CONFIRMATION
`STATUS
`
`
`
`51303
`
`
`
`51304
`
`
`
`
`
`TRANSMISSION
`PRIVILEGE
`REVERSING
`
`OPERATION
`
`RECEIVING
`
`OF DOCUMENT
`STARTED?
`
`
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`
`
`OPERATION
`
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`OPERATION
`RESULT?
`
`
`
`
`FILE ENTRY
`
`OPERATION
`
`HUAWEI EX. 1208 - 21/43
`
`Canon Exhibit 1208
`Page 21
`
`Canon Exhibit 1208
`Page 21
`
`HUAWEI EX. 1208 - 21/43
`
`

`

`US. Patent
`
`Nov. 4, 1997
`
`Sheet 21 of 29
`
`5,684,607
`
`FIG. l2-2
`
` TRANSMISSION
`PRIVILEGE
`REVERSING
`OPERATION
`
`51311
`
`DISCONNECTING
`OPERATION
`
`$1312
`
`RESELECTING
`OPERATION
`
`$1313
`
`
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`
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`RESULT?
`
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`
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`NORMAL STATUS
`
`
`
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`
` 31315
`
`
`
`51314
`
`
`SEND OUT
`
`CONFIRMATION
`STATUS
`
`
`$1316
`
`HUAWEIEX.1208 - 22/43
`
`Exhibit 1208
`
`Canon Ex it1 08
`
`Canon Exhibit 1208
`Page 22
`
`HUAWEI EX. 1208 - 22/43
`
`

`

`U.S. Patent
`
`
`Nov. 4, 1997
`
`
`Sheet 22 of 29
`
`5,684,607
`
`FIG. 13
`
`SESSION MODE
`POLLING
`RECEIVING
`
`
`OPERATION
`
`
`51402
`
`51401
`
`
`
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`CONFIRMATION
`CONFIRMED
`STATUS
`
`STATUS
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`
` TRANSMISSION
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`OPERATION
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`OPERATION
`
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`
`
`
`OF DOCUMENT
`
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`31407
`
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`OK
`[FILE ENTRY
`RESULT? = OPERATION
`
`
`
`
`
`
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`
`TRANSMISSION
`PRIVILEGE
`REVERSING
`OPERATION
`
` 51409
`
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`
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`NORMAL STATUS
`
`SEND OUT
`
`CONFIRMATION
`
`STATUS
`
`
`HUAWEIEX.1208 - 23/43
`
`Canon Exhibit1208
`
`Canon Exhibit 1208
`Page 23
`
`HUAWEI EX. 1208 - 23/43
`
`

`

`Nov. 4, 1997
`
`Sheet 23 of 29
`
`5,684,607
`
`U.S. Patent
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`HUAWEI EX. 1208 - 24/43
`
`Canon Exhibit 1208
`Page 24
`
`Canon Exhibit 1208
`Page 24
`
`HUAWEI EX. 1208 - 24/43
`
`

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`U.S. Patent
`
`Nov. 4, 1997
`
`Sheet 24 of 29
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`HUAWEI EX. 1208 - 25/43
`
`Canon Exhibit 1208
`Page 25
`
`Canon Exhibit 1208
`Page 25
`
`HUAWEI EX. 1208 - 25/43
`
`
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`U.S. Patent
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`Nov. 4, 1997
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`HUAWEI EX. 1208 - 26/43
`
`Canon Exhibit 1208
`Page 26
`
`Canon Exhibit 1208
`Page 26
`
`HUAWEI EX. 1208 - 26/43
`
`

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`Nov. 4, 1997
`
`Sheet 26 of 29
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`3,684,607
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`HUAWEI EX. 1208 - 27/43
`
`Canon Exhibit 1208
`Page 27
`
`Canon Exhibit 1208
`Page 27
`
`HUAWEI EX. 1208 - 27/43
`
`

`

`U.S. Patent
`
`Nov. 4, 1997
`
`Sheet 27 of 29
`
`5,684,607
`
`JOMO13
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`HUAWEI EX. 1208 - 28/43
`
`Canon Exhibit 1208
`Page 28
`
`Canon Exhibit 1208
`Page 28
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`HUAWEI EX. 1208 - 28/43
`
`

`

`U.S. Patent
`
`Nov. 4, 1997
`
`Sheet 28 of 29
`
`5,684,607
`
`
`
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`HUAWEI EX. 1208 - 29/43
`
`Canon Exhibit 1208
`Page 29
`
`Canon Exhibit 1208
`Page 29
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`HUAWEI EX. 1208 - 29/43
`
`
`
`

`

`U.S. Patent
`
`Nov. 4, 1997
`
`Sheet 29 of 29
`
`5,684,607
`
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`HUAWEI EX. 1208 - 30/43
`
`Canon Exhibit 1208
`Page 30
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`Canon Exhibit 1208
`Page 30
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`HUAWEI EX. 1208 - 30/43
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`
`
`
`

`

`5,684,607
`
`1
`FACSIMILE APPARATUS USING A SMALL
`COMPUTER SYSTEM INTERFACE
`
`This application is a continuation of application Ser. No.
`07/889,199 filed May 28, 1992, now abandoned.
`BACKGROUND OF THE INVENTION
`1. Field of the Invention
`The present invention relates to a facsimile apparatus.
`Moreparticularly, the present inventionrelates to a facsimile
`apparatus which realizes various kinds of applications by
`controlling a scanner, printer, image memory, line control
`section orthe like, which constitute the facsimile apparatus,
`by means of an external host computer.
`2. Description of the Related Art
`Hitherto, systems have been developed which realize
`various kinds of applications by controlling a scanner,
`printer, memory and line control section provided in a
`facsimile apparatus by means of a host computer. Conven-
`tional RS-232C and GPIB interfaces are used therein as
`interfacing techniques for connecting the facsimile appara-
`tus to the host computer.
`there are
`However,
`in the above-described prior art,
`operational problems in that there is a limitation on the data
`transfer speed because interface techniques, such as
`RS-232C or GPIB,are used, and thatit takes too much time
`to transfer images.
`In addition, there is a drawback in that, since there is a
`limitation on the data transfer speed, the host computer
`cannot realize various kinds of applications by controlling
`the scanner, printer, memory,line control section or the like
`provided in the facsimile apparatus.
`SUMMARY OF THE INVENTION
`
`The present invention has been achieved to solve the
`above-mentioned problems of the prior art.
`An object of the present invention is to provide a facsimile
`apparatus which is capable of increasing the speed at which
`data is transferred between a host computer and a facsimile
`apparatus and of effectively utilizing a scanner, printer,
`memory, line control section or the like provided in the
`facsimile apparatus by instructions from the host computer
`by using the small computer system interface (SCSI) for
`interfacing a host computer with a facsimile apparatus. This
`is a conventional interface whose description is published,
`for example by the American National Standards Institute at
`ANSI X3.131-1986.
`Another object-of the present invention is to provide a
`facsimile apparatus which is capable of storing images read
`by the image reading section of the facsimile apparatus as
`files in the host computer and capable of controlling the
`transmission and recording thereof upon instructions from
`the host computer.
`A further object of the present invention is to provide a
`facsimile apparatus which is capable of entering images
`from a host computer into the memory of the facsimile
`apparatus and is capable of controlling the transmission and
`recording of the entered images under instructions from the
`host computer.
`A still further object of the present invention is to provide
`a facsimile apparatus in which a host computer, connected to
`a facsimile apparatus, which is capable of controlling the
`facsimile apparatus, obtains information on the apparatus
`with which it communicates from said facsimile apparatus
`and thereafter instructs the facsimile apparatus to transmit or
`receive images.
`
`10
`
`15
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`20
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`25
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`30
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`35
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`45
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`50
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`5S
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`65
`
`2
`A still further object of the present invention is to provide
`a facsimile apparatus which is capable of notifying the host
`computer of information on images stored in the facsimile
`apparatus in a data format selected by the host computer
`from among a plurality of data formats.
`Objectives and advantages in addition to those discussed
`above shall be apparent to those skilled in the art from the
`description of the preferred embodiment of the invention
`which follows. In the description, reference is made to the
`accompanying drawings, which form a part hereof, and
`which illustrate an example of the invention. Such example,
`however, is not exhaustive of the various embodiments of
`the invention, and therefore reference is made to the
`appended claims for determining the scopeof the invention.
`BRIEF DESCRIPTION OF THE DRAWINGS
`FIG.1 is a block diagram illustrating the entire construc-
`tion of a facsimile apparatus according to an embodimentof
`the present invention;
`FIG.2 is a block diagram which illustrates an example in
`which logic units are assigned to the blocks which constitute
`the facsimile apparatus according to this embodimentof the
`present invention;
`FIG. 3 is a flowchart which illustrates the outline of
`processing commands inputted from an interface 9 with a
`host computer;
`FIG.4 is a flowchart whichillustrates in detail operations
`for processing an entire logic unit command in step $307
`shownin FIG.3;
`FIGS.5-1 and 5-2 are flowcharts which illustrate in detail
`operations for processing various kinds of commands to a
`scanner unit 6 in step S308 shown in FIG.3;
`FIGS. 6-1 and 6-2 are flowcharts which illustrate printer
`command processing;
`FIGS.7-1, 7-2, 7-3 and 7-4 are flowcharts which illustrate
`image commandprocessing;
`FIGS.8-1, 8-2, 8-3 and 8-4 are flowcharts which illustrate
`operations concerning communication command. procéss-
`ing;
`FIG. 9 is a flowchart which illustrates in detail a call
`transmission operation;
`FIG. 10 is a flowchart which illustrates a session mode
`transmission operation;
`FIG. 11 is a flowchart which illustrates an operation
`concerning reception request processing;
`FIGS. 12-1 and 12-2 are flowcharts which illustrate an
`operation concerning a call polling procedure;
`FIG. 13 is a flowchart which illustrates a session mode
`polling reception operation;
`FIG. 14 is a table which lists a group of parameters for a
`logic unit command;
`FIG. 15 is a table which lists a group of parameters for a
`scanner unit command;
`FIG.16 is a table which lists a group of parameters for a
`printer unit command;
`FIG. 17 is a table whichlists a group of parameters for an
`image unit command;
`FIG.18 is a table whichlists a group of parameters for a
`communication unit command;
`FIG. 19 is a table which showsa file information request
`command; and
`FIG.20 is a table whichlists file information parameters.
`DETAILED DESCRIPTION OF THE
`PREFERRED EMBODIMENTS
`
`Preferred embodiments of the present invention will be
`explained below in detail with reference to the accompany-
`ing drawings.
`
`HUAWEI EX. 1208 - 31/43
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`Canon Exhibit 1208
`Page 31
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`Canon Exhibit 1208
`Page 31
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`HUAWEI EX. 1208 - 31/43
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`

`

`5,684,607
`
`3
`FIG..1 is a block diagram illustrating the entire construc-
`tion of a facsimile apparatus (hereinafter referred to as an
`apparatus) according to an embodiment ofthe present inven-
`tion. In this figure, a CPU 1 controls the entire apparatus in
`accordance with control programs stored in a ROM 2. Work
`areas and control data are temporarily stored ina RAM 3. An
`image memory 4 is a memory through which image data is
`handled. An image conversion section 5 converts resolution,
`paper size, and an encoding method.
`In this apparatus, an original document(image)is read by
`an image reading section such as a scanner 6 and printed out
`by an image recording section such as a printer 7. Commu-
`nication protocols between this apparatus and a communi-
`cation network are controlled by a line control section 8.
`Communication protocols between this apparatus and a host
`computer 15 are controlled by an interface section 9 with a
`host computer. In the present invention, a small computer
`system interface (SCSD is used as an interface. SCSI is an
`interface by which data can be transferred at a speed higher
`than that by RS-232C or GPIB.
`A file management section 10 manages documents created
`inside a facsimile apparatus, and the documents are stored in
`a storage apparatus 11. Operationsof the facsimile apparatus
`are performed by an operation section 12. The line control
`section 8 is connected by a dedicated cable 13 to the
`network, and the interface section 9 with a host computer is
`connected by a dedicated cable 14 to the host computer 15.
`A detailed explanation will now be given about the
`control of a facsimile apparatus according to this embodi-
`ment. Since operations, such as transmission, reception, or
`copying, and methods employed in a facsimile apparatus,
`are well known, the explanation thereof is omitted here.
`Thus, only the control of this apparatus from outside via
`the interface 9 with a host computer will be described below
`in detail.
`FIG. 2 illustrates an example in which logic units are
`assigned to the blocks which constitute the facsimile appa-
`ratus. In this figure, an entire logic unit 21 is a unit in which
`the entire facsimile apparatus is considered as one unit. In a
`scanner 22,a printer 23, an image memory 24, and a line unit
`25, a logic ID (LUN:logic unit number)is set thereto with
`reference to a scanner section, a printer section, an image
`memory section, and a line control section respectively
`which comprise a functional block. In this embodiment, a
`specific commandis set to each of these units so that the
`functions of each unit are utilized to their fullest and the
`burden on the host computer 15 is minimized.
`Next, functions provided in the units will be described
`unit by unit.
`FIG. 3 is a flowchart which illustrates the outline of
`processing commands inputted from an interface 9 with a
`host computer. The CPU 1 processes commandsin accor-
`dance with this flowchart. In this figure, in steps S301 to
`$305, a check is made, for example from the LUN,
`to
`determine to which unit a commandis issued. In steps $307
`to $311, a command process for each unit is performed on
`the basis of the determination results of steps S301 to $305,
`respectively. Step S306 concerns a step for a case in which
`invalid commands, such as undefined commands,are input,
`but this step is basically not performed.
`
`<Entire Logic Unit Command Processing>
`FIG.4 is a flowchart which illustrates in detail operations
`for processing an entire logic unit command in step $307
`shown in FIG. 3.
`
`10
`
`15
`
`20
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`25
`
`30
`
`35
`
`45
`
`50
`
`35
`
`(Processing of Reserve Unit Command)
`The reserve unit command is a command which should be
`issued first when the facsimile apparatus is controlled by the
`
`65
`
`4
`host computer 15 so as to fully use the functions of the
`facsimile apparatus. The facsimile apparatus, upon reception
`of this command, checks the internal operating state or the
`like, and notifies the facsimile apparatus of any change in
`status depending upon whether the facsimile apparatus can
`follow the control by the host computer 15 from this time on.
`In this embodiment, after the reserve unit command is
`processed normally,it is called an “On-Line” mode. In the
`On-Line mode, processing of commands from the host
`computer takes precedence over operations from the opera-
`tion section 12. To explain more specifically, when it is
`determined in step S401 shown in FIG. 4 that the command
`is a reserve unit command,the internal state of the facsimile
`apparatusis checked in step S410.If the facsimile apparatus
`is not in a state in which various kinds of control commands
`from the host computer 15 can be executed, a confirmation
`of this status is sent out in step S413 (a check condition
`status is sent out on the basis of SCSI protocols). When the
`confirmation of the status is sent ont, the cause thereof can
`be determined when the host computer 15 issues an infor-
`mation request command.
`Whenthe result of internal status check is “OK”in step
`$410, the facsimile apparatus shifts to the On-Line mode,
`and an operation for displaying the status on the operation
`section 12 is performed, and the setting of internal control
`status is performed. In the subsequent step $412, an opera-
`tion for sending out a confirmation of a normal status
`indicating that the reserve unit command processing has
`been terminated normally is performed (a good status on the
`basis of SCSI protocols is sent out).
`
`(Processing of Release Unit Command)
`This commandis used to shift from the state in which the
`facsimile apparatus is placed in the On-Line mode by the
`reserve unit and processing commands from the host com-
`puter 15 takes precedence over operations from the opera-
`tion section 12 to the Off-Line mode in which the facsimile
`apparatus is operated as an ordinary facsimile apparatus.
`Whenit is determined in step $402 that the commandis
`a release command, an operation forshifting to the Off-Line
`mode is performed in step $420. When the command from
`the host computer 15 is being executed, the execution is
`stopped, the internal status is shifted to the Off-Line mode,
`and a confirmation of a normal status is sent out in step
`$421. Thus, the operation is terminated.
`
`(Processing of Information Request Command)
`
`This command is used not only to notify the host com-
`puter of the functionsthat this apparatus has, but to notify it
`of the cause of an abnormality when a confirmation statusis
`sent out.
`
`Whenit is determined in step $403 that the command is
`an information request command,in step $430,the facsimile
`apparatus performs an internal
`information notification
`operation for notifying the host computer of the type of
`model, version, terminal performance, and the cause of
`abnormality. In the subsequent step $431, a confirmation of
`a normal status is sent out, terminating the command pro-
`cessing.
`Tn step $404, an operation for a case in which a command.
`which is undefined for the entire logic unit is received is
`. performed, and a confirmation of this status is sent out. A list
`of a parameter group used for the entire logic unit is shown
`in FIG. 14. In FIG. 14, reference character PC denotes the
`host computer 15.
`
`HUAWEI EX. 1208 - 32/43
`
`Canon Exhibit 1208
`Page 32
`
`Canon Exhibit 1208
`Page 32
`
`HUAWEI EX. 1208 - 32/43
`
`

`

`5,684,607
`
`6
`$538. If the reading operation has been terminated normally,
`a confirmation of a normal status is sent out in step $539.
`This terminates the series of operations.
`
`(Processing of File Information Request Command)
`
`5
`<Scanner Command Processing>
`FIGS.5-1 and 5-2 are flowcharts whichillustrate in detail
`operationsfor processing various kinds of commandsforthe
`scanner unit 6 in step S308 shown in FIG. 3. FIG. 15 is a
`table which lists a group of parameters used for the scanner
`unit command.
`
`(Processing of Scanner Information Request
`Command)
`
`10
`
`15
`
`This commandis used to notify the host computer offile
`information created as a result of executing the reading
`request command, for example, a file managementID,file
`size, or the like.
`Regarding processing, when it is determined in step $504
`This command is used to notify the host computer of
`in FIG. 5-2 that the commandisafile information request
`information about the scanner unit 6, such as the presence or
`command,file information is sent out in step $540. In the
`absence, or size of an original document, or the presence or
`subsequent step S541, a confirmation of a normal status
`absence of any defects.
`regarding this operation is sent out. This terminates the
`Whenitis determined in step $501 shownin FIG.5-1that
`operation.
`the commandis a scanner information request command,the
`scanner information shown in FIG. 15 is sent to the host
`computer in step $510, and a confirmation of a normal status
`regarding this operation is sent out in step S511. This
`terminates the series of operations.
`
`(Processing of Reading Parameter Setting
`Command)
`
`This commandis used to receive the designation of the
`reading mode before a reading request commandis received.
`The designation of a reading mode includesthesetting of the
`resolution, the encoding method and the like. Regarding
`processing, when it is determined in step $502 that the
`command is a reading parame