JPH0548815A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To communicate a picture signal using a normal tape recorder by controlling the communication speed of the picture signal in accordance with the capability of the recording or reproducing speed of a tape recorder. CONSTITUTION:A controller 12 is provided with a control part which controls the communication protocol. This control part controls the communication protocol so that the reception speed and transmission speed of the picture signal are equal to each other or lower than the recording speed and reproducing speed of a tape recorder 7 respectively, and a program for this control is stored on a ROM in the controller 12. When the picture signal is received, the reception speed is changed in accordance with the capability of the recording speed of the tape recorder 7 to record the picture signal by the present tape recorder; and when the picture signal recorded on the tape is transmitted, the transmission speed is changed in accordance with a capability of the reproducing speed of the tape recorder to transmit the correct picture signal from the tape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile machine for communicating image signals.

[0002]

2. Description of the Related Art Conventionally, a facsimile apparatus has been used as an apparatus for communicating image signals. Recently, a facsimile machine combined with an answering machine has been used. Among these facsimile machines, there is a machine having an image recording function (memory).

By the way, as an image recording method, RA is used.
There are two methods of recording in the M and the tape recorder. Since the present invention relates to recording an image signal in the tape recorder, a facsimile apparatus of this type will be described below with reference to the drawings. To do.

FIG. 5 is a block diagram showing a schematic configuration of a facsimile machine with a tape recorder. This facsimile apparatus includes a modem 103 connected to a telephone line 102 via an NCU 101, a working RAM 104,
Image codec 10 for encoding and decoding image signals
5 and its working RAM 106, a tape recorder 107 as an image recording means, a modulation circuit 108 as a modulation means for modulating a signal that can be recorded in the tape recorder 107, and a signal from the tape recorder 107 as a predetermined signal. Demodulation circuit 10 as demodulation means for demodulating into
9 and printing means 110 having a printing thermal head
And an image reading means 111 having a reading CCD, and a control device (comprising a microcomputer, memory, etc.) 112 for controlling each of the above-mentioned components.

The operation of the facsimile apparatus configured as above will be described. First, an image signal is sent from the transmitting side via the telephone line 102. This image signal is once converted into a digital signal by the modem 103, then modulated by the modulation circuit 108, and recorded on the tape recorder 107. Next, when the signal recorded in the tape recorder 107 is printed, the modulated signal is demodulated by the demodulation circuit 109, image processing is performed by the image codec 105, and printed by the printing unit 110.

[0006]

However, the image signal is recorded (memorized) in the tape recorder 107 by the above method, for example, in the case of a microcassette tape recorder, the tape speed is slow and the communication speed in the facsimile machine is low. Recording at the above recording speed has a problem that it is difficult.

Therefore, in view of the above-mentioned conventional problems, the present invention provides a facsimile apparatus capable of communicating image signals using the current tape recorder without improving the performance of the tape recorder. To aim.

[0008]

In order to solve the above-mentioned problems, a first means of the present invention is a facsimile apparatus having a tape recorder capable of recording an image signal, wherein the receiving speed of the image signal is the tape. This is a facsimile apparatus provided with a control unit for controlling according to the recording speed capability of a recorder.

In order to solve the above problems, the second means of the present invention is a facsimile apparatus having a tape recorder capable of recording an image signal, wherein the transmission speed of the image signal is the reproduction speed of the tape recorder. It is a facsimile apparatus provided with a control unit for controlling according to the capability of.

[0010]

According to the above construction, when the image signal is communicated, the communication protocol is controlled by the control unit so that the image signal receiving or transmitting speed is matched with the recording or reproducing speed capability of the tape recorder.

Therefore, an ordinary tape recorder can be used to communicate image signals.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A facsimile apparatus according to an embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, this facsimile apparatus has a modem 3 connected to a telephone line 2 via an NCU 1.
, A working RAM 4, an image codec 5 for encoding and decoding an image signal, and a working R
AM6, a tape recorder 7 as an image recording means, a modulation circuit 8 as a modulation means for modulating a signal that can be recorded on the tape recorder 7, and a demodulation means for demodulating the signal from the tape recorder 7 into a predetermined signal. A demodulation circuit 9 as the above, a printing means 10 having a printing thermal head,
The image reading means 11 has a CCD for reading, and a control device (comprising a microcomputer, memory, etc.) 12 for controlling the above-mentioned components,
Further, the control device 12 is provided with a control unit (not shown) that controls the communication protocol, which is the gist of the present invention.

This control unit controls the communication protocol so that the reception speed and the transmission speed of the image signal are equal to or slower than the recording speed and the reproduction speed of the tape recorder 7, respectively. For example, the program is R in the control device 12.
It is stored on the OM.

The operation of the facsimile machine will be described below with reference to the flowchart of FIG. The time series phase of a facsimile call is shown in FIG. 3, and the facsimile transmission phase is shown in FIG.

When image signal communication is performed, it is first determined whether the own device is the transmitting side or the receiving side (step 1). If the own device is the receiver, it is next determined whether or not the memory is received (step 2). In the case of memory reception, the communication speed is set by the control unit in the control device 12 so that the communication speed (reception speed) is less than or equal to the recording speed of the tape recorder 7 (step 4). When the communication speed is set, first, the called (receiving) side notifies the calling terminal of all the functions of the called terminal by a digital identification signal (DI).
S signal) is transmitted (step 6). Next, the function selected from the functions indicated by the digital identification signal is designated by the digital command signal (DCS signal) from the calling terminal (step 7). Next, a training check signal (TCF signal) is sent from the calling side (transmitter) to confirm the training of the modem for receiving the facsimile message, and it is checked whether the channel can be used at this transmission speed (step 8). ). Next, a reception preparation confirmation signal (CFR signal) is sent from the called (reception) side (step 9). Then, in step 10, the image signal is recorded on the tape recorder 7. Next, the calling side sends a procedure end signal (EOP signal) (step 11), and the called side informs that the message has been completely received by a message confirmation signal (MCF signal) (step 12). Finally, the disconnecting command signal (DCN signal) is sent from the calling side to end the communication (step 13).

If the self-device is the transmitting side in step 1, it is next determined whether or not it is a memory transmission (step 3). When the image signal recorded on the tape is transmitted, the communication speed is set by the control unit in the control device 12 so that the communication speed (transmission speed) is equal to or lower than the reproduction speed of the tape recorder 7 (step 5). Thereafter, steps 6 to 13 are performed as in the case of reception. However, in step 10, the image signal is transmitted instead of being recorded. In this case, the image signal, which is the facsimile data recorded on the tape recorder 7, is demodulated by the demodulation circuit 9, coded by the image codec 5 as necessary, modulated by the modem 3 into an analog signal, and transmitted. It

As described above, according to this embodiment, when an image signal is received, it can be recorded on the current tape recorder by changing the reception speed according to the recording speed capability of the tape recorder 7. Also, when transmitting the image signal recorded on the tape, by changing the transmission speed according to the playback speed capability of the tape recorder,
The correct image signal can be sent from the tape.

[0019]

As described above, according to the configuration of the present invention, the communication speed of the image signal is controlled by the control unit according to the recording or reproducing speed capability of the tape recorder. Can be used to communicate image signals.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a facsimile apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating an operation of the facsimile apparatus according to the embodiment.

FIG. 3 is a diagram showing details of a communication protocol in the facsimile apparatus of the embodiment.

FIG. 4 is a diagram showing details of a communication protocol in the facsimile apparatus of the embodiment.

FIG. 5 is a block diagram showing a schematic configuration of a facsimile device in a conventional example.

[Explanation of symbols]

 3 modem 5 image codec 7 tape recorder 12 controller

Claims (2)

[Claims] 1. A facsimile apparatus having a tape recorder capable of recording an image signal, the facsimile apparatus comprising a control unit for controlling the receiving speed of the image signal according to the recording speed capability of the tape recorder. 2. A facsimile apparatus having a tape recorder capable of recording an image signal, the facsimile apparatus having a control unit for controlling the transmission speed of the image signal according to the reproduction speed capability of the tape recorder.