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Data communicating apparatus and facsimile apparatus

A technology of data communication and facsimile devices, which is applied in the direction of image communication and electrical components, and can solve the problem that the communication time cannot be effectively realized.

Inactive Publication Date: 2004-06-16
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when a disabling (disabling) signal for the echo suppressor is sent for each page of communication of the image signal, the shortening of the communication time cannot be effectively realized.

Method used

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  • Data communicating apparatus and facsimile apparatus
  • Data communicating apparatus and facsimile apparatus
  • Data communicating apparatus and facsimile apparatus

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Embodiment Construction

[0036] figure 1 A block diagram showing the configuration of the communication device according to the first embodiment of the present invention is shown.

[0037] The CPU 2-1 controls the entire communication device, that is, the RAM 2-3, the nonvolatile RAM 2-4, the manipulation unit (operation unit) 2-5, the display unit 206, the image Processing unit 2-7, readout unit 2-8, recording unit 2-9, drive unit 2-10, communication unit 2-11, NCU 2-12, microphone / speaker (not shown), and the like.

[0038] The RAM 2-3 stores binary image data read out by the reading unit 2-8 or binary data to be recorded in the recording unit 2-9. The binary image data stored in the RAM 2-3 is modulated by the communication unit 2-11, and the modulated signal is output from a subscriber line 2-13 via the NCU 2-12. The analog waveform input from the subscriber line 2-13 via the NCU 2-12 is demodulated by the communication unit 2-11, and the demodulated binary data is still stored in the RAM 2-3. ...

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Abstract

A facsimile communication system and a communication apparatus reduce a loss time due to the synchronization of transmission / reception and shorten a communication time. They also shorten a communication time in a full duplex communication mode and allow proper switching of the full duplex communication at the transmission / reception replacement.

Description

technical field [0001] The invention relates to a facsimile communication system and communication equipment. [0002] The invention also relates to a data communication device having data communication capability using a full-duplex communication mode. Background technique [0003] In the prior art of this type of facsimile communication system, by Figure 9 The half-duplex communication mode recommended by the T.30ITU-TT series shown has been widely adopted. [0004] However, in the prior art system, in the communication of the communication protocol different from the image information communication protocol V 2.1, it is necessary to add a synchronous signal of approximately 1 second at the front end of the data in each protocol signal, so as to transmit and receive The stations synchronize their data reception. Therefore, for example, to send data with a length of 0.1 seconds, a signal of 1.1 seconds must be sent and an additional communication time for transmitting a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N1/327
CPCH04N1/32702H04N1/32791
Inventor 剑持敏男仓林定助吉田武弘早川直司前田徹大野繁树吉浦吉雄松枝一孝吉野元章滝口文之柳泽和人志水英贵
Owner CANON KK
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