JPS62180675A - Facsimile conversion equipment - Google Patents

Abstract

PURPOSE:To lower an error rate in a bit of picture information, and to send a picture with high quality by developing a bit of received picture information to a picture element data, deciding picture quality by checking the data, and accumulating a picture signal encoded and outputted with a prescribed data compression procedure. CONSTITUTION:The bit of picture information sent from a facsimile equipment 1 (A system) is received at the reception part 51 of a communication control part 5, and a decoding part 52 develops the bit of received picture information to a picture element data G. Afterwards, at a picture checking part 53, a regulated checking of the number of the picture elements is performed. Based on the checking, the picture quality of the bit of received picture information is decided. Furthermore, at the picture checking part 53, a picture element data G' from which a control data, such as a fill data, etc., that is not required for a real picture, is generated from the picture element data G. Afterwards, at an encoding part 54, the picture element data G' is converted according to a compression procedure regulated in advance, thereby a picture signal Z being generated, and it is accumulated at an accumulation part 55. A central processor 62 within a main control part 6 reads out the picture signal Z, and stores it at a picture signal accumulating storage device 63.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a facsimile conversion device, and more particularly to a facsimile conversion device suitable for connecting facsimile devices having different image information compression procedures.

[Background of the invention]

The conventional facsimile conversion device is
When connecting two facsimile machines that use different image information compression procedures such as the MR method and the MH method as disclosed in Publication No. 9 and Japanese Patent Publication No. 60-31415, the following processing is performed. was. That is, image information received from one facsimile device is converted into a predetermined data format within the facsimile conversion device and stored. Then, at the time of transmission from the facsimile conversion device to the other facsimile device, the data is converted again from the predetermined data format to image information in the compression procedure used by the other facsimile device.

However, the conventional facsimile conversion apparatus described above has the following problems. That is, direct communication between general facsimile devices requires only one communication, but when a facsimile conversion device is used, the facsimile conversion device receives the image information 113 from one facsimile device, and then transmits it to the other facsimile device. Because of the error, it will be necessary to have two faiths.

Therefore, the error rate of image information is twice that of direct communication, and there is also the possibility that the image itself will not reach the other facsimile machine.

In addition to the above-mentioned prior art related to the present invention, Japanese Patent Application No. 58-27629 and Japanese Patent Application No. 59-1
No. 54872 exists.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to reduce the error rate of image information transmitted in communication and provide a facsimile conversion device that can send high-quality images. There is.

[Summary of the invention]

The facsimile conversion device of the present invention is connected via a telephone line to a plurality of facsimile devices having different data compression procedures, and a first
The second facsimile apparatus receives the image information according to the data compression procedure, converts it into image information according to the second data compression procedure suitable for the second facsimile apparatus, and transmits it to the second facsimile apparatus. decoding means for developing image information received from the facsimile machine into pixel data;
an image checking means for checking the pixel data output from the decoding means to determine the image quality and outputting pixel data with an image quality of a predetermined level or higher; It is characterized by comprising an encoding means for encoding both signals using a compression procedure and outputting both signals, and a both signal storage means for accumulating both signals outputted from the encoding means.

[Embodiments of the invention]

Hereinafter, the present invention will be explained in more detail with reference to embodiments shown in the accompanying drawings.

In the accompanying drawings, facsimile device 1 uses method A as a compression procedure for image information, and facsimile device 2 uses method B as a compression procedure for image information. Image information (A method) sent from the facsimile device 1 is input to the communication control section 5 of the facsimile conversion device 4 via the telephone exchange [3]. The receiving section 51 of the communication control section 5 receives the image information of the "2-A method," and the decoding section 52 develops the received image information into pixel data G. Thereafter, the image checking unit 53 checks the specified number of pixels based on the screen size (A4, B4, A3, etc.) of the image information received by the receiving unit 51. Through this check, the image quality of the received image information is determined.

If the image quality has not reached a predetermined level, it is determined that reception has failed, and the receiving unit 51 sends a message to the facsimile machine 1.
Have the image information sent again. The following two operations are repeated until the image quality reaches a predetermined level.

If the image checking unit 53 determines that the image quality of the received image information has reached a predetermined level,
Furthermore, the image checking section 53 creates pixel data G' by removing control data such as fill data that is unnecessary for the actual screen from the -Jz pixel data. Thereafter, in the encoding section 54, the -F pixel data G' is converted according to a predetermined compression procedure to create an image signal Z, which is stored in the storage section 55.

The central processing unit 62 in the control unit 6 is the transfer control device 61
The image signal Z is read out from the storage section 55 through the storage section 55 and stored in the device 63 for image signal storage.

In the process of receiving image information transmitted from the facsimile device 1 described above, the decoding unit 52 has a function of decoding image information in various formats, and corresponds to the format of the image information transmitted from the facsimile device 1. It is assumed that the system operates as follows. The decoding unit 52 as described above can be implemented by hardware or software.

Next, a case will be described in which image information is transmitted to the facsimile terminal device 2 in the B method by performing the operation in reverse to the above. The central processing unit 62 selects an empty communication control unit 5 from among the plurality of communication control units provided in the facsimile conversion device 4, and then reads out the image signal Z stored in the image signal storage storage device 63. It is stored in the storage section 55 of the communication control section 3 via the transfer control device 61. The image signal Z from the storage section 55 is sent to the encoding section 54, where it is converted into B-scheme image information for the destination facsimile machine 2. The converted image information of the B method is sent to the transmitter 5.
6 to the facsimile machine 2 via the telephone exchange 2. At this time, the transmitter 56 adds a control signal such as fill data to the image information and transmits the image information, depending on the transmission speed.

In the above-described transmission process, the encoding unit 54 transmits the image signal Z
It has a function to encode image information in various formats, and can be realized by both hardware and software.

According to the embodiment described above, it is only necessary to remove the control system signal such as fill data from the received image information and record only the actual pixel take. 63 memory stations are required, making it economical.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, the image information that the facsimile conversion device receives from the facsimile device can be made error-free. Therefore, facsimile communication performed via the facsimile conversion device can be regarded as one communication from the facsimile conversion device to the destination facsimile device in terms of the error rate of image information, and is equivalent to direct communication between the facsimile devices.

Therefore, it is possible to send a high-quality image, and it is possible to prevent a situation in which the image information does not reach the destination facsimile machine.

[Brief explanation of drawings]

The accompanying drawings are block diagrams illustrating one embodiment of the invention. DESCRIPTION OF SYMBOLS 1, 2...Facsimile device, 3...Telephone exchange, 4...Facsimile conversion device, 5...Communication control device, 6...Main control device, 51...Receiving unit, 52...
- Decoding unit, 53... Image checking unit, 54... Encoding unit, 55... Accumulating unit, 56... Transmitting unit, 61...
...Transfer control device, 62...Central processing unit, 63...
・Storage device for storing image signals.

Claims (1)

[Claims] 1. Connected via a telephone line to a plurality of facsimile machines having different data compression procedures, and receiving image information transmitted from the first facsimile machine according to the first data compression procedure; a second facsimile machine that is compatible with the second facsimile machine;
Convert the data into image information using the data compression procedure described above.
A facsimile conversion device for transmitting data to a first facsimile device includes a decoding device for developing image information received from the first facsimile device into pixel data, and a decoding device for checking the pixel data output from the decoding device to determine image quality. an image checking means for outputting pixel data with an image quality of a predetermined level or higher; an encoding means for encoding the pixel data output from the image checking means in a predetermined data compression procedure and outputting an image signal; 1. A facsimile conversion apparatus comprising: image signal accumulation storage means for accumulating image signals output from the means. 2. If the image checking means determines that the image quality is below a predetermined level, the first facsimile device causes the first facsimile device to transmit the image information again.
The facsimile conversion device described in Section 1. 3. The facsimile conversion apparatus according to claim 1, wherein the image checking means removes control data such as fill data from pixel data having an image quality of a predetermined level or higher and outputs the result. 4. Claims characterized in that the encoding means converts the image signal read from the image signal storage means into image information using a second data compression procedure compatible with the second facsimile machine. The facsimile conversion device according to item 1.