JPH03285454A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To enable transmission similarly to normal facsimile transmission at the time of transfer by temporarily storing picture data to be sent from a called party side terminal into a buffer circuit in a fixed size and recording the data to a magnetic recording medium while attaching a synchronizing code and a control code to this data with the stored data amount as one packet. CONSTITUTION:The picture data sent from the called party side terminal through a communication line 1 is guided through an NCU 2 to a MODEM 3, converted to digital data for the unit of 8 bits and fetched into a controller 4, and the data is remade while attaching the synchronizing pattern and the control code. Then, the remade compressed data is stored into a buffer circuit 5. When the picture data for one page is stored, the stored data is sent out to a tape recording modulator/demodulator 6 as one packet. The data reproduced from a magnetic tape is successively loaded to buffers 5a and 5b for the unit of the packet and at a controller 4, the transmission speed or the other transmission/reception mode is decided based on the control signal attached to the data and the throughput of the called party side facsimile equipment.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a facsimile device that is capable of recording image data sent from a destination terminal on a magnetic recording medium and reproducing the recorded image data. .

(Prior Art) In a facsimile device equipped with the function of recording image data on a magnetic recording medium, when recording image data received from a terminal on the other end on the magnetic recording medium, there is a One possible method is to record in real time according to the modem transmission speed set in .

(Problem to be Solved by the Invention) However, with the above-mentioned conventional technology, when reproducing a magnetic recording medium and trying to transfer it to another facsimile device, it is difficult to determine the functions and line conditions of the destination facsimile device. For example, when the transmission speed is different from the transmission speed at the time of reception, there is a problem that image data cannot be retrieved from the magnetic recording medium and transferred.

The present invention was made in view of the above circumstances, and its purpose is to transmit image data in the same way as normal facsimile transmission when it is taken out from a magnetic recording medium and transferred, regardless of the conditions under which it is received when recording image data. The purpose of the present invention is to provide a facsimile device that can perform the following functions.

(Means for Solving the Problems) In order to solve the above problems, the facsimile device of the present invention records image data sent from a terminal on the other end on a magnetic recording medium, and also reproduces the recorded image data. In a capable facsimile device, a buffer circuit of a certain size is provided for temporarily storing image data sent from the other party's terminal, and when recording the image data recorded in this buffer circuit on the magnetic recording medium,
The amount of data stored in the buffer circuit is recorded on a magnetic recording medium as one packet, to which a synchronization code and a control code are added.

(Function) When recording image data on a magnetic recording medium, the image data sent from the other party's terminal is temporarily stored in a buffer circuit of a certain size, and the image data stored in this buffer circuit is transferred to the magnetic recording medium. When recording, the amount of data stored in the buffer circuit is made into one packet, a synchronization code and a control code are added to the packet, and the data is recorded on a magnetic recording medium.

That is, when transferring image data recorded on a magnetic recording medium, a synchronization code and a control code added to each read packet of image data are used, and depending on the functions of the other party's terminal, Determine the transmission speed and other transmission/reception modes. As a result, no matter what conditions the image data is received during recording, when it is taken out from the magnetic recording medium and transferred, it is possible to send it in the same way as normal facsimile transmission.

(Example) Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

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

In the figure, a communication line 1 that connects with the other party's terminal is connected to a network control unit (NCU) 2.
The output is bidirectionally connected to a modem 3 which converts it into 8-bit digital data. Furthermore, the modem 3 and the control device 4 are bidirectionally connected, and the output of the control device 4, which performs band compression of received image data, etc., is bidirectionally connected to the buffer circuit 5. The buffer circuit 5 is
This embodiment has a two-stage configuration (5a, 5b). The output of this buffer circuit 5 is parallel/
It is bidirectionally connected to a tape recording modulation/demodulation device 6 that performs serial conversion as well as MFM modulation and MFM demodulation.
It is bidirectionally connected to a tape recorder 7 equipped with a recording/reproducing head for recording FM data and reproducing the recorded MFM data.

Further, the NCU 2 and the telephone 8 are bidirectionally connected, and the telephone 8 and the control device 4 are also bidirectionally connected.

The NCU 2 has a switching function between the modem 3 side and the telephone 8 side. Further, the control device 4 is configured to receive the output of an input device 10 having a numeric keypad, etc., and to output image data from the control device 4 to a facsimile printout device 9.

FIG. 2 shows a specific circuit configuration of the control device 4, in which 41 is the main control section, 42 is the I10 control section that connects with the modem 3, telephone 8, etc., and 43 is the connection with the input device 10. 44 is a mechanical/print output device control unit that connects with the facsimile print output device 9; 45 is an image signal processing unit that performs appropriate processing on the image data sent from the modem 3; This is a memory section in which the operating program for the entire control device is stored, and each section is bidirectionally connected via a data bus.

FIG. 3 shows a facsimile tape recording format for recording image data on a magnetic tape, and the operation of the facsimile apparatus of the present invention will be described below with reference to the same figure.

When an incoming call signal is sent through the communication line 1, this incoming call signal is input to the NCU 2, where it is determined whether the signal is from the facsimile side or the telephone side. If the signal is from the facsimile side, the connection is switched to the modem 3 side. Thereafter, image data sent from the other party's terminal (facsimile machine F) through the communication line 1 is guided to the modem 3 via the NCU 2. After the transmission speed and other transmission/reception modes are set between the modem in the other party's facsimile machine and the modem 3 in this facsimile machine, the
In accordance with the recommendations of CITT (International Telegraph and Telephone Consultative Committee)8
The data is converted into bit-by-bit digital data, and the converted digital data (image data) is taken into the control device 4. The control device 4 removes the fill code, which is a blank space, from the digital data in 8-bit units, and
After performing band compression such as MH (Modified I (uffman) code), the data is re-created by adding a synchronization pattern and a control signal according to the recording format shown in FIG. 3, and the re-created compressed data is sent to the buffer circuit 5. Then, when the first stage buffer 5a becomes full or one page worth of image data is stored,
The data stored in the tape recording modem 6 is
The compressed data is sent out as a packet, and the next compressed data is stored in the second stage buffer 5b. Thereafter, when the second stage buffer 5b also becomes full or one page's worth of image data is stored, the stored data is similarly sent to the tape recording modulation/demodulation device 6 as one packet.

Thereafter, the above operations are repeated until the image data reaches the end of the page.

The tape recording modulation/demodulation device 6 converts the parallel data inputted from the buffer circuit 5 in units of packets into serial data, and also sends the converted serial data to the MF.
The M-modulated data is converted into MFM data, and this MFM data is sequentially recorded on a magnetic tape loaded in a tape recorder 7.

At this time, when recording/reproducing in packet units, data will overflow in the buffer circuit 5 unless the tape recording/reproducing speed is faster than the maximum transmission speed of G3 facsimile (9600 bps). The tape recording density is set to about 12 kbps.

Next, the recording format shown in FIG. 3 will be explained.

The synchronization pattern recorded at the beginning of the magnetic tape is a certain pattern of signals necessary for synchronizing demodulation in the demodulation section of the tape recording modulation/demodulation device 6 when reproducing and retrieving recorded data. It is constructed with a sufficient length of time. Further, the control signal is data such as date, page, telephone number of the other party's facsimile machine, etc., and is used when retrieving. An EOL (End Of) is used to distinguish between synchronization patterns and control signals.
Line) signal is written, and an EOL signal is also written after the control signal. Thereafter, one line of image data and an EOL signal are sequentially written, and finally an RTC signal indicating the end of the page is written.

Next, a case will be described in which image data is reproduced and transferred from a magnetic tape recorded according to the recording format as described above.

That is, the MFM data reproduced from the magnetic tape in the tape recorder 7 is subjected to MFM demodulation in the demodulation section in the tape recording modulation/demodulation device 6, and is also converted from serial data to parallel data, and is sequentially sent to buffers 5a and 5b in packet units. loaded. In Keisenso W4,
After extracting the data stored in the buffer circuit 5 and determining the transmission speed and other transmission/reception modes based on the control signal added to the data and the processing capacity of the other party's facsimile machine, the data is processed in 8-bit units. At the same time as converting it into digital data, it adds the number of fill codes required for the other party's facsimile machine and sends it to the modem 3.
tJ2, and is sent to the other party's facsimile machine via communication line vA1.

(Effects of the Invention) When recording image data on a magnetic recording medium, the facsimile device of the present invention temporarily stores the image data sent from the other party's terminal in a buffer circuit of a certain size, and also stores the image data in the buffer circuit of a certain size. Since the configuration is configured to record the amount of data as one packet on the magnetic recording medium by adding a synchronization code and a control code to it, no matter what conditions are received when recording image data, the amount of data from the magnetic recording medium will be the same. At the time of retrieval and transfer, the effect is that it can be sent in the same way as normal facsimile transmission.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the electrical configuration of the facsimile apparatus of the present invention, FIG. 2 is a block diagram showing a more specific configuration of the control device, and FIG. 3 is a diagram showing the facsimile tape recording format. . 9...Facsimile printout device 10...Input device engineering...Communication line 2...Network control unit (NCU) 3...Modem 4...Control device 5...Buffer circuit 6...・Tape recording modulation/demodulation device 7...tape recorder 8...telephone

Claims (1)

[Scope of Claims] 1) In a facsimile device that is capable of recording image data sent from a terminal on the other end on a magnetic recording medium and reproducing the recorded image data, an image sent from the terminal on the other end. A buffer circuit of a certain size is provided for temporarily storing data, and when the image data stored in this buffer circuit is recorded on the magnetic recording medium, the amount of data stored in the buffer circuit is synchronized as one packet. A facsimile device characterized in that a code and a control code are added and recorded on a magnetic recording medium.