JPH0437255A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To store and reuse information with a large capacity inexpensively by recording a signal through a public telephone network onto an audio cassette tape as it is. CONSTITUTION:A facsimile equipment connecting to a public telephone network 1 converts a read digital picture signal into an analog signal in a voice band through MODEMs 5-7 and sends the signal to an opposite facsimile equipment through the public telephone network 1. This signal is recorded to an audio cassette tape recorder 13 directly and selected by a line control circuit 4. Moreover, a means is provided, which reproduces a recorded tape and sends it to an opposite facsimile equipment through the public telephone network 1, a tape is stored and the stored tape is set and the content is sent and the storage of facsimile image signal personally is attained. Thus, inexpensive audio cassette tap and recorder are used to form a facsimile equipment with a large capacity of picture memory.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile image signal recording and reproducing device for a facsimile machine.

[Conventional technology]

As described in Japanese Unexamined Patent Publication No. 1-141458, the conventional apparatus converts a received facsimile signal into a video signal and records it on the audio trunk of a videotape.

[Problem to be solved by the invention]

The above conventional technology does not take into consideration the memory capacity and price, miniaturization of the device, storage of recorded information, and reuse of information. There were problems such as the impossibility of storage and reuse.

The purpose of the present invention is to transmit signals directly through the public telephone network,
By recording on audio cassette tapes, it is possible to store and reuse information at low cost and with large capacity.

[Means to solve the problem]

In order to achieve the above object, the present invention modulates the read image signal into the audio band through a modem, switches the modem signal from the public telephone network side to the audio cassette tape recorder side using a line control circuit, and transmits the facsimile signal to the audio cassette tape recorder side. Record the image signal on an audio cassette tape. Furthermore, when transmitting a facsimile image signal, an audio cassette tape is played back, and the played signal is transmitted to the other party's facsimile machine through the public telephone network.

[Effect]

A normal facsimile machine stores digital image signals in an IC memory or the like, but if a large capacity is secured, about IMbit of memory is required for three A4 size original documents, making the device expensive.

A facsimile machine connected to the public telephone network converts the read digital image signal through a modem into an analog signal that falls within the voice band, and sends it to the other party's facsimile through the public telephone network. This signal (340~3.4KHz)
can be recorded directly on an audio tape recorder, and a switch is provided in the line control circuit. By this means, it is possible to record about 30 sheets of A4-sized originals for 30 minutes on one side using a 60-minute tape, and the apparatus can be constructed at low cost and in a small size. In addition, by playing the recorded tape and sending the signal to the other party's facsimile machine through the public telephone network, it became possible to store the tape, set the stored tape, and send the contents. It becomes possible to store signals.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1, 2, and 3.

The procedure for recording facsimile image information onto an audio cassette tape is shown below.

Switch S1 relay 2 from A to B. The read image signal is read, converted into two values by a circuit 7, and data compressed by an encoding circuit 5. This compressed data is converted into a facsimile image signal 16 within the voice band by a modulation circuit 5. This signal is transferred to the audio cassette recorder 13.
and record it on a cassette tape. When recording the facsimile image signal 16 onto an audio cassette tape, it is recorded in the format shown in FIG. Therefore, before recording the facsimile image signal 16, the following operations are performed.

(1) Rewind the audio cassette tape and stop it at the beginning.

(2) Switch the SL relay from A to B, output the start signal (IlooIIZ) from the toll signal sending circuit 8 for about 1 second, and record it on the tape.

(3) Stop the tonal signal transmission, and then record the facsimile image signal 16. At this time, a page end signal RTC is added to the facsimile image signal 16.

Next, the extraction of facsimile image information from the audio cassette tape will be explained.

Rewind the audio cassette tape. S2 relay 3 to C
Switch from to D. The audio cassette recorder starts playing, and the tonal signal detection circuit 12 outputs the start signal 1.
5 detected. By stopping the recorder at the point where this signal is interrupted, tape head detection 18 is performed. In order to connect to the other party's facsimile machine, a call is made by dial processing 19. At this time, the S1 relay 2 is switched from B to A, and the S2 relay 3 is switched from D to C. When the communication is connected to the other party's facsimile machine via the public telephone network, the other party's facsimile machine returns a facsimile response signal 20. This is received and analyzed, and a facsimile transmission start signal 21 is sent out.

Upon receiving this, the facsimile device returns a facsimile reception start response signal 22. At this time, switch the S1 relay from A to B.
, switch the S2 relay from C to D, and start playing the audio output from the tape recorder. The reproduced facsimile image signal is sent to the other party's facsimile through the public telephone network. In addition, the demodulation circuit g9 and the decoding circuit IO
When the facsimile image signal being sent is received and analyzed in parallel, and RTC is detected, it is determined that the page has ended, the recorder is stopped, and the S1 relay is switched from B to A, and S2
The relay is switched from D to C and a page end signal 24 is sent to notify the other party's facsimile machine of the end of the page. Upon receiving this, the other party's facsimile device returns a reception completion response signal 26, and the transmitting side sends a line disconnection signal 26 and terminates the facsimile communication by disconnecting the line 27.

The above procedure enables facsimile communication using an audio cassette tape as a recording medium.

According to this embodiment, a facsimile machine with a large capacity image memory can be made using an inexpensive audio cassette tape and recorder.

Conventionally, three A4 size original documents require approximately IMbit of memory. If this memory (dynamic RAM) is provided in the device, approximately 1,500 reports will be erased.

〔Effect of the invention〕

In the present invention, approximately 30 minutes of audio information can be recorded by using a 60 minute audio cassette tape on one side, and the cassette tape can be attached to and removed from the device, allowing recorded information to be stored in units of cassettes. A 60 minute tape costs about 300 yen and can record about 30 A4 size originals. Furthermore, since the recorder part can be built into the apparatus for about 500 yen, it is effective in reducing the product cost when manufacturing a facsimile machine with a large capacity image memory.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an embodiment of the present invention, Fig. 2 is a tape format diagram when recording a facsimile image signal on an audio cassette tape, and Fig. 3 is a sequence diagram for extracting information from the audio cassette tape. It is. 1...Public telephone network line, 2...Relay switch. 3 Relay switch, 4... Line control circuit, 5... Modulation circuit, 6... Encoding circuit, 7... Reading circuit. 8. Tonal signal sending circuit, 9. Demodulation circuit, 10.
decoding circuit, 11... recording circuit, 12... tonal signal detection circuit, 13... audio cassette recorder, 14... S1 relay control, 15... start signal,
16...Facsimile image signal, 17...S2
Relay control, 18... Tape head detection processing, 19...
・Dial processing, 20...Facsimile response signal, 2
1... Facsimile transmission start signal, 22... Facsimile reception start response signal, 23... Facsimile image signal, 24... Page end signal. 25: Reception completion response signal 226: Line disconnection signal, 27: Line disconnection, 28: Sl/S2 relay control. Hana 1st 2nd A Loli BΔ Kiriji i

Claims (1)

[Scope of Claims] 1. In a facsimile machine connected to a public telephone network, a means for recording a read transmitted image once modulated into an audio band through a modem onto an audio cassette tape, and a means for recording the transmitted image on an audio cassette tape; A facsimile apparatus comprising means for sending a read facsimile signal to a destination facsimile machine.