JPS63142768A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To shorten the communication time of an original picture without shortening the reading time and recording time of the original picture by reading the original picture while calling at a transmission side to accumulate it in a page memory and decoding the received data at a receiving side to accumulate it in the page memory and switching a telephone line to the side of a telephone set. CONSTITUTION:The transmission side is so constituted as to start the reception side. If the original is set on an original platen, the transmission side starts reading the original picture, accumulates the picture information in the page memory 2, switches the telephone line from the telephone set to the side of a facsimile equipment, transmits a receiver start signal so as to start the facsimile equipment on the reception side, and codes picture information in the page memory 2 to transmit it. The reception side decodes received picture information to accumulate it in the page memory 14. When decoding is terminated, it executes recording, terminates a communication procedure, and switches the telephone line from the facsimile equipment to the telephone set. Thus, the communication time of the original picture can be shortened without shortening the reading time and recording time of the original picture.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a facsimile communication device, and more particularly to a facsimile device having an encoding/decoding circuit and a page memory circuit.

BACKGROUND ART FIG. 4 shows a case where a conventional 03 facsimile machine sends and receives a document image during a call, and the transmitter side confirms that the receiver side is activated and then activates its own device as the transmitter side. , Phase C after communication start procedure (Phase B)
At the same time, it starts reading the original image, encodes the read image information, modulates the encoded data, and then sends it out to the telephone line via the modem.

In the above case, when the time required for encoding is "o" and the amount of information per line of read image information is small, the transmission time of encoded data is approximately equal to the reading time of the original.

On the other hand, when receiving encoded data, the receiver side activates its own device as the receiving side before the transmitter side is activated, and starts decoding at the same time as it enters phase C after the communication start procedure,
The decoded image information is recorded to obtain a received original image.

In the above case, the time required for decoding is set to "o", and when the amount of information per line of transmitted data is small (well, the time to obtain a recorded received image is approximately equal to the recording time.

Problems to be Solved by the Invention However, according to this configuration, in order to make the transmission time of one line on the transmission path the same as the reading time or recording time, a zero fill is inserted between the image signals on the transmission path. Therefore, there is a problem that the transmission time is longer than the amount of information on the transmission path.

In addition, the transmitter side starts transmission after confirming that the receiver side has started, and the telephone line is held by the facsimile machine until the communication procedure (Phase D) is completed after reading and recording the document. , there is a problem that the hold time of the telephone line becomes long. Particularly, when the call and document image transmission and reception are repeated, such as by transmitting and receiving document images during a telephone conversation and then returning to the telephone conversation, there is a problem in that it takes time for one party to transmit and receive document images.

Conventionally, methods have been adopted to shorten the reading time and recording time to solve the above problems, but in this case, it is necessary to transport the original quickly, so it is necessary to The problem is that the motor, motor drive circuit, and power supply become larger.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a facsimile communication device that can shorten the communication time of original images without shortening the reading time or recording time of original images. shall be.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention is configured such that the sending side starts up the receiving side. Starts reading the image, stores the image information in the page memory, switches the telephone line from the telephone to the facsimile machine, sends a receiver start signal to start the receiving facsimile machine, and stores the image information in the page memory. The information is encoded and transmitted, and the receiving side stores the received image information in the page memory by decoding 1-, and after completing the decoding, it performs recording and terminates the communication procedure to connect the telephone line from the facsimile machine. It has a configuration that allows switching to a telephone.

According to the present invention, with the above-described configuration, the receiving side does not require any activation operation for the sending side to activate the receiving side, and the sending side reads the original image during a call and stores the data in the page memory. Transmission time is not affected by read time. On the receiving side, the received data is decoded and stored in the page memory, and after the decoding is completed, the communication procedure is terminated, and the telephone line is switched to the telephone side, so that one image recording and a telephone call can be made simultaneously.

The holding time of the telephone line described above is the sum of the data transmission time from the sending side page memory to the receiving side page memory and the transmission time of the communication procedure signal, and is shortened compared to the conventional example.

EXAMPLES Hereinafter, the present invention will be described in detail with reference to the drawings. 1 and 2 are block diagrams showing one embodiment of a facsimile device according to the present invention, FIG. 1 is a block diagram of main parts for explaining the sending side facsimile device, and FIG. 2 is a receiving side facsimile device. FIG. 3 is a block diagram of main parts for explaining the facsimile apparatus, and FIG. 3 is a signal sequence diagram in this embodiment.

First, in FIG. 1, 1 reads an original image and generates an image signal a.
a reading unit that outputs an original presence detection signal indicating whether or not the original is placed on the original placing table;
2 is a page memory that stores the image signal a from the reading unit 1;
3 transfers the image signal a from page memory 2 to T4 of 0CITT.
4 is a modem that modulates the encoded signal C from the encoder 3 and outputs a modulated signal d; 6 is an audio signal e;
The input/output telephone 6 is a switch for switching the telephone line 7 to the modem 4 or the telephone 5, and in the initial state, the telephone 6 and the telephone line 7 are connected.

Further, reference numeral 8 indicates a start signal generation circuit which generates a start signal f for starting up the facsimile IJ device on the receiving side and outputs it to the telephone line 7; Part 1. Page memory 2. Encoder 3. Modem 4. This is a control circuit that outputs control signals g1+g2+g3+g4+g6 and g8 to the switch 6 and the activation signal generation circuit 8, respectively.

In FIG. 3, 10 is a telephone that inputs and outputs voice signals, and 11 is a telephone line 7 that is connected to a telephone 1Q or a modem 1 to be described later.
This is a switch for switching to 2.

In the initial state, telephone line 7 and telephone set 1Q are connected.

Further, 12 is a modem that demodulates the modulated signal d from the switch 11, 13 is a decoder that decodes the demodulated signal 1 (encoded signal C) from the modem 12 using CCITT T4, and 14 is a decoder that is decoded by the decoder 13. A page memory 16 stores the image signal a, a recording section 16 records the original image on recording paper using the image signal a from the page memory 14, and a switch 11. Modem 12° decoder 13. Page memory 14. A control signal Jll'jl is sent to the recording unit 15, respectively. ' A control circuit 17 outputs JI31J14 and J15, and a start signal detection circuit 17 detects a start signal from the sending facsimile machine and outputs it as a detection signal to the control circuit 16.

Next, the operation of the facsimile machine having the above configuration will be explained with reference to FIGS. 1 to 3.

First, the transmitting side telephone 5 and the receiving side telephone 10 are connected via the telephone line 7 by off-hook and dialing on the calling side and off-hook on the called side, and are in a conversation state.

During a call, when a document is placed on the document tray of the reading section 1 on the sending side, the reading section 1 outputs a detection signal to that effect to the control circuit 9, and the control circuit 9 sends a control signal g1 to place the document. The image is read, and the page memory 2 receives the control signal g.
2, the image signal a from the reading section 1 is accumulated.

The control circuit 9 also switches the telephone line from the telephone 6 to the modem 4 using the control signal g6, and further drives the activation signal generation circuit 8 using the control signal g8 to send the activation signal f to the telephone line 7.
to be sent to.

On the receiving side in FIG. 2, when the activation signal f is transmitted, the activation signal detection circuit 17 detects it and sends the detection signal k to the control circuit 1.
Output to 6. When the control circuit 16 receives the detection signal k, it switches the telephone line 7 from the telephone 10 to the modem 12 in response to the control signal J11.

Then, modem 12 and transmitting modem 4 enter phase B.
Communication procedures are carried out, and both facsimile +7 devices are in phase C.
to move to.

When transitioning to phase C, the image signal a in the page memory 2 on the transmitting side is read out by the control signal g2 from the control circuit 9, encoded by the encoder 3 into a coded signal C using the control signal g3, and the control signal At g4, the modulated signal d is modulated by the modem 4 and transmitted to the receiving side via the switch 6 and telephone line 7.

On the receiving side, the transmitted modulated signal d is input to the modem 12 via the switch 11, demodulated into the encoded signal C using the control signal 1□, and decoded into the image signal a by the decoder 13 using the control signal i+3. page memory 1 with control signal JI4.
4, and recording is started by the recording section 15 in response to a control signal j15.

As shown in FIG.
When the decoding is completed, the process ends and the process moves to phase D. When phase D ends, the transmitting side switch θ switches to the control signal g.
6 switches the telephone line 7 to the telephone set 5, and the switching device 11 on the receiving side switches the telephone line 7 to the telephone set 10 according to the control signal gl+, returning to the talking state. Therefore, since the recording time by the recording unit 16 on the receiving side is generally longer than the data transmission time on the telephone line, recording continues even after returning to the talking state.

According to this embodiment, since the image information is stored in the page memory on the transmitter side, there is an effect that reading unevenness and noise are reduced.

DETAILED DESCRIPTION OF THE INVENTION As described above, the present invention is configured such that the sending side starts up the receiving side, and when the original is set on the document table, the sending side starts reading the original image and transmits the image information. The image information is stored in the page memory, the telephone line is switched from the telephone to the facsimile machine, a receiver activation signal is sent to the receiving facsimile machine, the image information in the page memory is encoded, transmitted, and received. The side decodes the received image information and stores it in the page memory, and after completing the decoding, it records, ends the communication, and switches the telephone line from the facsimile machine to the telephone. The communication time for document images can be shortened without shortening the image reading time or recording period.

Further, according to the present invention, the time required for transmitting and receiving manuscript images is shortened for the caller, especially when the telephone conversation and the transmission and reception of manuscript images are repeated, such as transmitting and receiving manuscript images during a telephone conversation and then returning to the telephone conversation. It is possible to shorten the holding time of the telephone line, which is a hindrance to telephone calls.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a main part of a sending facsimile device according to the present invention, FIG. 2 is a block diagram of a main part of a receiving facsimile machine according to the present invention, and FIG. 3 is a signal sequence according to an embodiment of the present invention. 4 are signal sequence diagrams according to the conventional example. 1.Pa reading unit, 2,14...°page memory, 3...
Encoder, 4, 12...Modem, 5, 10...Telephone, 6°11...Switcher, 7...Telephone line, 8...
Starting signal generation circuit, 9, 16... control circuit, 13...
- Decoder, 16... Recording section, 17... Starting signal detection circuit. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 4

Claims (3)

[Claims] (1) a telephone, a document detecting means for detecting the presence or absence of a transmitted document, a reading means for reading the transmitted document according to the output of the document detecting means, and a storage means for accumulating image information from the reading means; an encoding means for encoding the image information in the storage means; an activation signal generation means for activating the facsimile machine on the receiving side; When a signal instructing facsimile transmission is inputted, the facsimile machine on the receiving side is activated by generating a start signal from the start signal generating means, and a communication procedure is carried out by the above storage means. A facsimile apparatus, wherein the image information is encoded by the encoding means and transmitted to a receiving facsimile apparatus. (2) The facsimile apparatus according to claim 1, further comprising a page memory circuit as a storage means. (3) A telephone, an activation signal detection means for detecting an activation signal from a sending facsimile machine, a decoding means for decoding the received encoded signal, and a memory for storing image information decoded by the decoding means. a recording means for recording the image information stored in the storage means; and a recording means for recording the image information stored in the storage means, and when the activation signal detection means detects the activation signal during a call on the telephone, it performs a communication procedure with the sending facsimile device and the sending side Control that causes the decoding means to decode a signal from a facsimile machine and store it in the storage means, and when the decoding by the decoding means is completed, performs a communication procedure and records the image information in the storage means in the recording means. A facsimile device comprising: means.