JPH0235503B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a facsimile device having a data storage function.

In general, data is stored in a single storage device in order to enable sequential broadcasting, automatic transmission at night, page retransmission, etc. during transmission, as well as proxy reception in the event of a failure of the image recording unit during reception. In the case of facsimile apparatuses having a data storage function that allows data to be sent and received, a major problem is how efficiently the data to be sent and received can be stored in the storage device.

Conventionally, as shown in FIG. 1, in a facsimile device having this type of data storage function, at the time of transmission, data read by a document reading section 1 is transferred to a data compression/reproducing section 3 on the facsimile main body side.
At the time of reception, the data received by the network control unit 5 and demodulated by the modulation/demodulation unit 4 before playback is stored in the storage device 6, and compressed during both transmission and reception. The data storage efficiency is improved by storing data in the same state.

However, in such conventional facsimile devices, since the stored data at the time of transmission is compressed by the data compression/reproduction unit 3 on the facsimile main body side, the data is compressed when read from the storage device 6 and transmitted. If the mode is not compatible with the other device, transmission will not be possible, and if the transmission rate is different, troublesome operations such as detecting and removing dummy bits for correction or adding dummy bits as appropriate are required. Furthermore, since the storage device 6 can only handle compressed data, it is difficult to perform operations such as editing the transmitted data.

The present invention has been made in consideration of these points, and takes into account the usage form of data storage during sending and receiving, and optimizes the storage of data during sending and receiving without interfering with facsimile communication. The present invention provides a facsimile device having a data storage function that allows the user to perform the following operations.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the facsimile apparatus according to the present invention, as shown in FIG. 2, a facsimile main body side A includes a document reading section 1, an image recording section 2, a data compression/reproduction section 3, a modulation/demodulation section 4, and a network control section 5; A data storage unit 6 is provided to store transmission data read by the document reading unit 1, and to store received data received by the network control unit 5 and demodulated by the modulation/demodulation unit 4. and a storage device side B consisting of a dedicated data compression/reproduction section 7, and the data is transmitted and transmitted by switches S1 and S2.
The mode can be arbitrarily switched to determine whether or not to output the received data from the storage device side B.

The operation of the facsimile apparatus according to the present invention configured as described above will be explained below.

First, when transmitting data is stored, the data read by the document reading section 1 is stored on the storage device side B.
The data is sent to the data compression/reproduction unit 7, compressed there, and then stored in the data storage unit 6. Also, if you want to send the accumulated data to the other device, switch
After closing S1 to the b contact side and reproducing the data read from the data storage section 6 in the data compression and reproduction section 7, the data compression and reproduction section 3 on the facsimile main body side A
There, the data is compressed in a mode suitable for the other party's device and dummy bits are added if necessary, and then modulated by the modem section 4 and sent to the network control section 5.
sent through. At this time, the compression by the data compression/reproduction unit 7 on the storage device side B is performed only for data storage and has nothing to do with facsimile communication, so the compression is simply performed without considering the circumstances of the other party. It becomes possible to use any data compression method to improve the storage efficiency in the data storage section 6. Note that when sending the data read by the document reading section 1 to the storage device side B,
The same data is also given to the data compression/reproduction unit 3 on the facsimile main body side A, but in this case, the system control device (not shown) puts only the storage device side B into operation and the data compression/reproduction unit 3 Selective control will be performed to disable the. In addition, it goes without saying that at this time, control is taken as necessary to put both the storage device side B and the data compression/reproduction section 3 into an operating state, and to cause the storage device side B to store data while transmitting the same data. Nor.

Next, when storing received data, if you simply try to store the received data in the opposite direction to the data storage and transmission route mentioned above, the data that is sent from the other party through the line is sent continuously regardless of the status of the receiving side, so the data compression/reproduction unit 7 on the storage device side B has to perform a control procedure for each line of input data in the main scanning direction. It becomes necessary to use a device that can perform compression at the specified speed,
You will be subject to restrictions from facsimile communications. In other words, the line information being reproduced by the data compression/reproduction section 3 on the facsimile main body side A and the line information being compressed by the data compression/reproduction section 7 on the storage device side B do not match, and due to the buffer etc.
If simple line information follows complicated line information that takes time to compress and reproduce because the data is shifted by several lines, the data compression/reproduction section 7 may take some time to compress the data and then move on to the next simple line. Therefore, the data compression/reproduction unit 7 on the storage device B is required to be capable of compressing data at the speed promised in the facsimile communication control procedure.

Therefore, in the present invention, when storing received data, the received data received by the network control unit 5 and demodulated by the modulation/demodulation unit 4 is directly sent as is to the data storage unit 6 on the storage device side B and is stored therein. That's what I do. In this case as well, selection control is performed by the system control device (not shown) so that only the storage device side B is in the operating state. Therefore, when storing received data, the storage device side B
The data compression/reproduction unit 7 in the data compression/reproduction unit 7 is not involved in any way, and there is no need to use the compression speed promised in the facsimile communication control procedure as described above. In addition, when recording an image based on the received data stored in the data storage section 6, switch S2 is set to b.
When the contact side is closed, the data read from the data storage section 6 is sent to the data compression/reproduction section 3 on the facsimile main body side A, where it is reproduced and then provided to the image recording section 2.

As described above, the facsimile apparatus according to the present invention includes a document reading means for reading a transmission document and outputting the transmission data, a data storage means for compressing and storing the transmission data, and a data storage means for compressing and storing the transmission data. When compressing and storing
Data compression/reproduction in which compression is performed using the most efficient compression method among arbitrary compression methods, and when the transmission data stored in the data storage means is transmitted, compression is performed again to match the data compression method of the other party. and a transmitting means for transmitting the recompressed transmission data to the other party, or a transmitting and receiving means for transmitting the recompressed transmission data at the time of transmission and receiving received data from the other party at the time of reception. In some cases, the control means is configured to store the received data directly in the data storage means without going through the data compression/reproduction means, thereby efficiently storing the transmitted and received data without causing any trouble to facsimile communication. It has various excellent advantages, such as being able to perform the process optimally without any problems, being able to handle the regenerated transmitted data independently on the storage side, and being able to perform the storage process of received data at high speed. have.

In this case, in the present invention, a data compression/reproduction section dedicated to storage is provided, which is different from the compression/reproduction method of the data compression/reproduction section on the facsimile main body side, so that transmission data can be stored quickly and more efficiently. It is now possible to accumulate data.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a conventional facsimile device, and FIG. 2 is a block diagram showing an embodiment of the facsimile device according to the present invention. DESCRIPTION OF SYMBOLS 1... Original reading section, 2... Image recording section, 3... Data compression/reproduction section, 4... Modulation/demodulation section, 5... Network control section, 6...
Data storage section, 7...Data compression and playback section exclusively for storage.

Claims (1)

[Scope of Claims] 1. Original reading means for reading a transmission original and outputting its transmission data, data storage means for compressing and storing the transmission data, and compressing and storing the transmission data in the data storage means. When you do,
Data compression/reproduction in which compression is performed using the most efficient compression method among arbitrary compression methods, and when the transmission data stored in the data storage means is transmitted, compression is performed again to match the data compression method of the other party. What is claimed is: 1. A facsimile device comprising: a means for transmitting data; and a transmitting means for transmitting the recompressed transmission data to the other party. 2. A manuscript reading means for reading a transmission manuscript and outputting its transmission data; a data storage means for compressing and storing the transmission data; and when compressing and storing the transmission data in the data storage means,
Data compression/reproduction in which compression is performed using the most efficient compression method among arbitrary compression methods, and when the transmission data stored in the data storage means is transmitted, compression is performed again to match the data compression method of the other party. a sending/receiving means for transmitting the re-compressed transmission data at the time of transmission and receiving the received data from the other party at the time of reception; A facsimile device characterized by comprising a control means for accumulating received data.