JPS5937628B2 - Shiyogatsuushinsouchi - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a calligraphic communication device such as a facsimile.

In conventional facsimile communication, a document image is converted into an electrical signal by scanning, and this signal is transmitted as an analog signal to a remote location to reproduce a document image similar to the original transmitted image. However, such analog signals have the disadvantage that they contain a lot of redundancy, require a lot of time to transmit a single page of calligraphy, and therefore increase line charges. In order to eliminate these conventional drawbacks, many attempts have been made to utilize the statistical properties of calligraphy and drawings to eliminate their redundancy and shorten transmission time. However, with this type of redundancy removal method, the generation of signals becomes uneven, and if you try to send signals at a uniform constant speed to make effective use of the line, you will need a variable speed scanning method that changes the scanning speed. requires high-precision, expensive equipment. For example, in the run-length encoding method, which is well known as a redundancy removal method, a continuous length of white or black (this is called a run-length) is converted into codes with different code lengths depending on the frequency of occurrence. Send. Therefore, if scanning is performed at a constant speed, the amount of generated codes will vary depending on the signal of the calligraphic image. In other words, areas with a high amount of information (areas with many black and white changes)
In this case, the code generation speed is fast, and in areas where the amount of information is small (for example, all white areas), the code generation speed is slow. The transmission line requires a band that can transmit even the portion where the code generation rate is fastest, and therefore the line is not effectively utilized in the portion where the code generation rate is slow. Therefore, in order to use the transmission path effectively,
It becomes necessary to vary the scanning speed so that codes suitable for the line are generated. Using variable speed scanning as described above requires a complex and expensive mechanism in the scanning device, increasing the cost of the device.

Therefore, a conventional low-speed, constant-speed mechanism is used in the scanning unit to remove redundancy from the entire screen, and the signal is stored in a relatively inexpensive large-capacity storage device such as a disk or magnetic tape. It is being considered to reduce the cost of the device by transmitting the code for the entire screen to the receiving side.

Furthermore, by making the processing unit and storage device independent to remove the redundancy described above and connecting them externally to conventional low-speed facsimile machines, line usage time can be shortened. Systems are also being considered to enable intercommunication between low-speed facsimile machines. On the other hand, in order to simplify facsimile operations, it is being considered to automate the operation by reading the destination station number from the automatic paper feeder and the document itself. In such a system, it is necessary to classify documents that could not be transmitted because the other station was busy and the line could not be connected, and documents that had already been transmitted. As a conventional device for performing such classification,
As shown in Publication No. 0-21613, a document sorting mechanism is provided in the scanning path, and depending on whether or not the other party responds to the call, the document is placed either in the stacker 1 for unsent documents or in the stacker 1 for sent documents. There are some that are made to be excreted by crabs.

However, as mentioned above, in a storage-type facsimile device in which a processing unit and a storage device for removing redundancy are externally connected to a conventional low-speed facsimile machine, once the entire document has been read, the line with the other party is It is necessary to detect whether or not a connection has been established, and to classify it as sent or unsent based on this.

Therefore, if the conventional classification method described above is applied to this storage-type facsimile device, once the original is read,
Extra space, rollers, and the like are required to hold the device until a detection result indicating whether or not the line is connected is obtained, resulting in a very complicated mechanism and an increase in the size of the device. This is a serious drawback of the conventional automation system, which connects additional equipment to facsimile machines to shorten line usage time and enable intercommunication with high-speed machines. The present invention has been made in view of the above problems, and includes a low-speed facsimile machine in which a processing unit for removing redundancy and a storage device are externally connected to the main body of the facsimile machine. detect whether the line is connected between
By storing the detection results in memory and displaying them on the display, it is possible to distinguish between unsent documents and sent documents even when automating operations in devices whose function is mutual communication with high-speed machines. The object of the present invention is to provide a calligraphy and drawing communication device that can be classified.

A specific embodiment of the present invention will be described below with reference to the drawings. The figure is a block diagram showing a specific embodiment of the present invention.

The signal output from the facsimile 1 is input to a code conversion processing section 2, where it is converted into a code with redundancy removed, and stored in a storage device 3 having a storage capacity of codes for the entire screen.

On the other hand, the signal from the facsimile 1 is also input to the destination reader 4, and the part representing the destination number of the other party is extracted from the signal.
Stored in memory 5. When the detector 6 detects that the storage of the codes for the entire screen in the storage device 3 is completed, the counter 7
A signal is output to the counter 7, and the contents of the counter 7 are incremented by one.

The contents of the counter 7 are set to O before sending out the original, so when the first sheet of the original is stored in the storage device 3, the contents of the counter 7 become 1 and thereafter the second sheet becomes 2. The third photo will be 3... The signal from the detector 6 is also input to the memory 5, from which the destination number is retrieved and input to the first input terminal of the switch 8. The switch 8 is connected to transmit the first input terminal to the output side, and the destination number from the memory 5 is transmitted to the line 9 to call the partner station. When the detector 10 confirms the line connection with the other station, it outputs a signal to the switch 8, and the switch 8 operates to connect its second input terminal to the output side.
The signal from the detector 10 is also input to the storage device 3, and the stored code is input to the second input terminal of the switch 8 and sent to the line. When the sending of the full-screen code is completed, the detector 11 gives a signal to the automatic paper feeder 12, and the automatic paper feeder 1
2 inserts the next original to be sent into the facsimile. Detector 1
The signal from 1 is also input to switch 8, and in switch 8,
The first input terminal is connected to the output side. On the other hand, when the reading of the codes for the entire screen from the storage device 3 is completed, a signal is also given to the memory 13, and the memory 13 stores the contents of the counter 7 in accordance with the input signal.

On the other hand, if the line is not connected even after a certain period of time has passed after the destination number is called from the memory 5, the detector 10
4, and the memory 14 stores the contents of the counter 7 in accordance with the above input.

The output from the detector 10 is also input to the detector 11, and the detector 11 gives a signal to the automatic paper feeder 12 to eject the document in the facsimile and insert the next document. The above operations are repeated to sequentially feed out the documents set in the automatic paper feeder 12.

When the sending of all the originals is completed, the memory 13 stores the numbers of the originals that have been sent, and the memory 14 stores the numbers of the unsent originals. Automatic document feeder 1
2 in the order in which the documents are set, and by checking the contents of the memories 13 and 14 on the display 15, unsent documents can be confirmed.

The above 2 to 8, 10 to 11, and 13 to 15 constitute the processing device 16. Note that in the above, the document is considered unsent only when the line connection is not established, but even if code transmission is interrupted midway due to reasons such as a large number of code errors on the transmission path, the device configuration can be configured so that it is treated as an unsent document. It's easy to do. As described in detail above, in the present invention, in a calligraphic communication device that connects an external device to a low-speed facsimile device to reduce line usage time, it is detected whether or not the line is connected when sending each document, and the detection result is Since this is stored in the memory and displayed on the display, it is possible to distinguish between sent originals and unsent originals even when automatically sending a large number of originals using an automatic paper feeder. , and is extremely valuable in practice.

[Brief explanation of the drawing]

The figure is a block diagram showing one embodiment of the present invention. 1 is a facsimile machine, 2 is a processing unit, 3 is a storage device, 4 is a destination reader, 5 is a memory, 6 is a detector, 7 is a counter, 8 is a switch, 9 is a line, 10 and 11 are detectors, 12 is an automatic paper feeder, 13 and 14 are memories, 15 is a display device, and 1
Reference numeral 6 denotes a processing device composed of the above-mentioned 2 to 8, 10 to 11, and 13 to 15.

Claims (1)

[Claims] 1. A facsimile device that outputs a facsimile signal obtained by scanning a document, a code conversion processing unit externally connected to the facsimile device that converts the facsimile signal into a code with redundancy removed, and a code conversion processing unit that converts the facsimile signal into a code with redundancy removed. A calligraphic communication device comprising a storage device for storing the code and transmitting the code at a constant transmission speed from the storage device to reduce line usage time, a counter for counting the number of inserted manuscripts; a detector for detecting whether or not a line is connected to the destination of the original, and first and second memories for storing the counted value, which is the content of the counter, according to the detection result of the detector. and a display device that displays the contents of the first and second memories.