Browse Prior Art Database

Use of GIII Facsimile As an Image Scanner and a Printer

IP.com Disclosure Number: IPCOM000040703D
Original Publication Date: 1987-Dec-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 3 page(s) / 79K

Publishing Venue

IBM

Related People

Asano, H: AUTHOR [+2]

Abstract

This article describes the use of local GIII facsimile as an image scanner and a printer of a personal computer which communicates with other GIII facsimiles through a public line by providing a network control unit with a switching block which selectively connects the local GIII facsimile to the personal computer. Referring to Fig. 1, a prior network system is shown in which a personal computer 1 communicates with GIII (Group III) facsimile 2 through GIII facsimile adapter card 3, a connector 4, a switching system 5 of a public line and a connector 6. The GIII adapter card 3 includes a network control unit 7, a modem 8 and an adapter control unit 9. An image scanner 10 and a printer 11 are connected to the personal computer 1.

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Use of GIII Facsimile As an Image Scanner and a Printer

This article describes the use of local GIII facsimile as an image scanner and a printer of a personal computer which communicates with other GIII facsimiles through a public line by providing a network control unit with a switching block which selectively connects the local GIII facsimile to the personal computer. Referring to Fig. 1, a prior network system is shown in which a personal computer 1 communicates with GIII (Group III) facsimile 2 through GIII facsimile adapter card 3, a connector 4, a switching system 5 of a public line and a connector 6. The GIII adapter card 3 includes a network control unit 7, a modem 8 and an adapter control unit 9. An image scanner 10 and a printer 11 are connected to the personal computer 1. Image data from the image scanner 10 is sent to the GIII facsimile 2, and image data from the GIII facsimile 2 is printed by the printer 11. The GIII facsimile 2 operates in a GIII resolution, such as 7.7 line/mm + 1%. In case the resolution of each image scanner 10 and the printer 11 differs from the GIII resolution, the personal computer 1 converts the resolution of the image data scanned by the image scanner 10 to the GIII resolution or converts the GIII resolution data to the printer resolution. Such pel (picture element) conversion is a problem in the system shown in the Fig. 1.

(Image Omitted)

Referring to Fig. 2, an improved arrangement for solving the problem is shown. The same blocks that are shown in the Fig. 1 are assigned with the same reference numbers, respectively. A local GIII facsimile 12 is coupled to the network control unit 7 through a connector 13 and a switching block 14. The local GIII facsimile 12 is used as the image scanner 10 and the printer 11 shown in Fig. 1. In the scan/transmit mode of the personal computer 1, a document is scanned by the local GIII facsimile 12, the scanned image data is stored in the memory of the personal computer 1 through the switching block 14, and the stored image data is transmitted to the GIII facsimle through the public line. In receive/print mode, the image data from the GIII facsimile 2 is stored in the memory of the personal computer 1 through the public line, and the stored image data is supplied to the local GIII facsimile 12 through the switching block 14 for printing the image data. The pel conversion required in the system of the Fig. 1 is not required in the system of the Fig. 2, since the local GIII facsimile 12 operates in the GIII resolution. The detailed operations of the Fig. 2 are as follows: (1) Communication with the GIII facsimile 2 Step 1: Switches 15 are thrown to the position B and

switches 16

are thrown to t...