JPS6178280A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To attain the multiple address by providing plural encoding and decoding means and converting a signal into an encoded signal corresponding to an opposite facsimile equipment. CONSTITUTION:One page of facsimile signals of a read-out transmission original are encoded by an encoding part 5 and stored in an encoded signal memory part 12. Then one scan line of the signals is read out from the memory part 12, decoded to an original picture signal by a decoding part 8 and stored in a decoded signal memory part 6. By switching a selection part 4, the signal in the memory part 6 is inputted to an encoding means A corresponding to the opposite facsimile device A of the encoding part 5. The encoded signal is transmitted to the device A through a transmission control part 13, etc. The transmission is made with respect to other facsimile equipment B in the same manner. Continuously the next one line is read out, and said procedure is repeated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a storage a1 phase conversion circuit for a facsimile machine.

2. Description of the Related Art In recent years, facsimile machines have become popular, which perform digital processing on the image signal of a transmitted document, compress the bandwidth, and then send the payment.

The above-mentioned band compression methods include Modified No. 8 man encoding method (MH), Modified Read encoding method (,
Although many band compression methods such as MR) have been proposed and adopted, in order to perform mutual communication of facsimile signals, it is necessary that the band compression methods are the same, and communication between facsimile machines using different methods is not possible. To make this possible, a code conversion circuit is required.

On the other hand, in order to reduce line costs, it is desirable to adopt a high-efficiency encoding method. Therefore, for long-distance transmission, the most efficient encoding method is used for batch transmission, and each facsimile machine in the vicinity undergoes code conversion and then sends the facsimile to the facsimile machine. There is also a need for devices that transfer signals.

Therefore, a simple code conversion circuit is desired.

[Conventional technology]

The conventional technology will be explained below with reference to the drawings.

Fig. 2 shows a block diagram of a conventional example of a facsimile machine. In the figure, 1 is a microprocessor, 11 is a storage unit that stores programs, etc., 3 is a reading unit that reads a document, and 18 is a reading unit. An encoding unit that performs digital processing on the image signal and performs band compression; 420 is a storage unit that stores encoded facsimile signals; and 19 is a decoding unit that expands the band of the received facsimile signal and restores it to the original image signal. ,7
is a recording section that reproduces and records received facsimile signals.

The operation will be explained below.

After establishing a line with the other party's facsimile machine by telephone or the like and switching to the facsimile machine, the transmitted document is scanned and read by the reading s3, and encoded by the encoding unit 18 using the encoding method adopted by the sofa facsimile machine, such as the MH method. transmission control section 13, modem section 14. Network control unit 15
1.

On the other hand, the received facsimile signal is sent to the network controller 15. Modulation/demodulation section 1
4. It is received through the transmission control unit 13, restored to the original image signal by the decoding unit 19, and reproduced and recorded by recording s7.

In addition, when carrying out a relay operation, the facsimile signals decoded by the MH system are stored in the storage section 20 and sequentially sent to the destination facsimile machine.

Note that 10 is a mechanism control unit that controls the reading unit 3 and the recording unit 7, 16 is an interface for controlling the modulation/demodulation unit 14 and the network control unit 15, such as switching between transmission and reception, and 17 is an operation unit.

[Problem that the invention seeks to solve]

As explained above, some facsimile machines are equipped with only MH encoding means, and there is a problem in that facsimile signals encoded using methods other than MH cannot be transmitted to the above-mentioned apparatus.

[Means for solving problems]

The above-mentioned problems with the conventional technology include a plurality of encoding means for encoding facsimile signals using different band compression methods, and a plurality of decoding means for source facsimile signals corresponding to each of the plurality of encoding means. , a first storage means for storing the encoded facsimile signal, and a second storage means for storing the facsimile signal 'r [restored from the first storage means;
and code converting means for selecting one of the plurality of encoding means, and a facsimile signal obtained by restoring the received facsimile signal and encoding it using a predetermined encoding means among the plurality of encoding means. is stored in the first storage means, and restored E from the first storage means by the decoding means yc.
7 stored in the second storage means, and the code conversion means selects and encodes an encoded facsimile signal receivable by the destination facsimile device from the plurality of encoding means. This can be solved by using a facsimile machine.

[For production]

According to the present invention, it is possible to provide an inexpensive code conversion circuit that performs code conversion via the encoded signal storage means and the iris encoded signal storage means for at least one page, and which has different encoding methods. A facsimile device capable of broadcasting and forwarding to a facsimile device can be provided.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1A is a block diagram showing an extended embodiment of the present invention;
Figure (This is a time chart showing the operation of the bllma.
In the figures, the same symbols represent the same objects throughout the figures.

In FIG. 1(a), 5 is an encoding section having a plurality of encoding means, 2 is an encoding selection section for selecting an encoding means, and 8
9 is a decoding section having a plurality of encoding means, 9 is a decoding selection section, and 12 is a facsimile signal for one page encoded by the encoding section 5 using the most efficient encoding means. 6 is a decoded signal storage unit that stores the encoded signal, and 4 is a selection unit that switches the input signal of the encoder 5 between when reading the original and when transmitting the original. The operation will be explained with reference to FIG. 1(b).

(When broadcasting to U number of facsimile machines with different encoding means) (1) One page of the facsimile signal of the read original to be sent is transmitted from the encoding unit 5 to a high-efficiency encoding means (hereinafter referred to as M method). It is selected, encoded, and stored in the encoded signal storage section 12. [100. in Figure 1(b). It(2) The data is sent to the destination facsimile device A (not shown) after being encoded (assumed to be method A) provided by the destination facsimile device A. That is, the M encoded signal corresponding to one scanning line is read from the encoded signal storage section 12, the corresponding decoding means is selected by the decoding selection section 9, and the signal is inputted to the decoding section 8 and restored to the original image signal. and stores it in the decoded signal storage section 6.

(3) The encoded signal storage unit 6 is a first-in, first-out type storage unit, and the selection unit 4 switches the signal and sequentially inputs the signal to the encoding means A of the encoding unit 5. The image signal is encoded by the encoding means A and transmitted to the destination facsimile apparatus A through the transmission control section 13 and the like.

[101 in FIG. 1(b)] (4) Similarly (7), the encoding means B is selected for another facsimile device fftB (not shown) K, and the encoded signal is encoded from the decoded signal storage unit 6 and transmitted. [1(5) in Figure 1(b)
Next, read the next scan line and perform the steps (2) to (4) above.
) Repeat the steps. [103 in Fig. 1(b)] (For transfer) When transferring a received facsimile signal, the received facsimile signal is decoded once, and the most efficient encoding M is applied.
The encoded signal is stored in the encoded signal storage unit 12 and transmitted to another facsimile machine using the means (2) above. Incidentally, if the received facsimile signal is of the M method, it is stored as is in the encoded signal storage section 12 and transferred using the same procedure.

[Effects of the Invention] As described above, the present invention has a plurality of encoding means and decoding means, and repeats decoding/encoding using a memory for at least one scanning line to send information to the destination facsimile machine. It is possible to provide a facsimile device equipped with an inexpensive code conversion circuit that converts the corresponding signal into a nine-coded signal and sends the signal.

[Brief explanation of drawings]

FIG. 1(a) is a block diagram showing the configuration of a facsimile machine according to an embodiment of the present invention, FIG. 1(b) is a time chart when sending a message to a destination facsimile machine with a different encoding means, and FIG. 1 is a block diagram of a conventional facsimile device. In the figure, 1 is a control section, 2 is an encoding selection section, 3 is a reading section, 4 is a selection section, 5 is an encoding section, 6 is a decoded signal storage section, 8 is a decoding section, and 9 is a decoding selection section 12 is an encoded signal storage unit,

Claims (4)

[Claims] (1) A facsimile device that converts codes and transmits and receives facsimile signals, including a plurality of encoding means for encoding facsimile signals using different band compression methods, and a facsimile signal corresponding to each of the plurality of encoding means. a plurality of decoding means for restoring the encoded facsimile signals; a first storage means for storing the encoded facsimile signals; a second storage means for storing the facsimile signals restored from the first storage means; code conversion means for selecting one of the plurality of encoding means, and a code conversion means for restoring the received facsimile signal, and converting the facsimile signal encoded using a predetermined encoding means among the plurality of encoding means into the first one. The facsimile signal is stored in the storage means, and the facsimile signal restored from the first storage means by the corresponding decoding means is stored in the second storage means, and the encoded facsimile signal receivable by the destination facsimile device is transmitted to the facsimile signal. A facsimile apparatus characterized in that an encoding conversion means selects and encodes from a plurality of encoding means. (2) The facsimile apparatus according to claim (1), wherein the first storage means stores facsimile signals for at least one page of a transmission document. (3) The facsimile apparatus according to claim (1), wherein the second storage means stores at least one scan of the facsimile signal. (4) The facsimile apparatus according to claim (1), wherein the predetermined encoding is highly efficient encoding.