Device and method for facsimile and data communication

Details Device and method for facsimile and data communication Device and method for facsimile and data communication

1995-05-19

2000-03-21

Lee, Thomas D.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358425, H04N 132

Patent

active

060409223

ABSTRACT:
In a communication between transmitter-side and receiver-side communication control devices, when a data communication is desired after a facsimile communication without opening a telephone line, the transmitter-side communication control device transmits a data communication shift request signal to the receiver-side communication control device based on a previous command inputted to the transmitter-side communication control device. In response to this request signal, the receiver-side communication control device switches a communication mode from a facsimile communication mode to a data communication mode, and then sends back a data communication shift acknowledge signal to the transmitter-side communication control device. In response to this acknowledge signal, the transmitter-side communication control device switches a communication mode from a facsimile communication mode to a data communication mode. Accordingly, the data communication can be performed automatically after the facsimile communication without once opening the line. Such a data communication after the facsimile communication may also be realized based on a data communication shift request signal from the receiver-side communication control device.

REFERENCES:
patent: 4353097 (1982-10-01), Takeda et al.
patent: 5495581 (1996-02-01), Tsai
IBM Technical Disclosure Bulletin, vol. 37, No. 2A, Feb. 28, 1994, Armonk (US) p. 559, XPOOO433444 Anonymous: "nonstandard extension for facsimile transfer protocol".

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