JP2575036B2 - Incoming call transfer data processing device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an incoming call transfer data processing device in a facsimile or the like.

(Prior Art) As shown in FIG. 2, the incoming call transfer is performed when the incoming call transfer to the facsimile apparatus of the station B is set in the facsimile apparatus of the station A, for example, when the call is transferred from another S station to the A terminal. In this mode, when a document (document information) arrives at the station, the received document is recorded in the device of station A and transferred to station B.

FIG. 3 shows how data is stored in the memory at the time of incoming call transfer. The data received by the facsimile machine is 1
The data is temporarily stored in a page memory (SAF memory) for storing data of a page, and after being subjected to necessary processing such as data expansion, is recorded in a recording unit. At the same time, the data stored in the page memory is transferred to the next station B. For a normal document, only the page memory is sufficient, but for a complicated document, the number of data is large, and so-called memory over may not be possible with the page memory alone. In that case, the buffer memory is used as a FIFO memory, and the contents of the page memory are recorded in the recording unit via the buffer memory. Since the data to be transferred to the next station B is only the data inside the page memory, the page end code (RTC code) is not added to the end of the transfer data when the memory-over document is received and transferred. For this reason, the transfer destination B station cannot determine the end of the page at the end of the reception and causes a decoding error. Therefore, conventionally, the transfer operation has not been performed on the document whose memory is over.

(Problems to be Solved by the Invention) It is an object of the present invention to enable normal transfer of data stored in a page memory even when a memory overflow occurs during incoming call transfer. .

(Means for Solving the Problems) The present invention relates to a call-over transfer data processing device for a facsimile or the like, and a memory-over discriminating unit for discriminating a memory over in a call-in transfer mode, Is determined, a page end code is added to the last part of the stored contents of the page memory for the transfer of the document over memory to the next station.

(Operation) According to the present invention, when a document with a memory over is sent from the transmission side to the facsimile apparatus in which the incoming call transfer is set, this is determined by the memory over determination means, and the page end code adding means is determined. Since the last part of the data stored in the page memory is added to the page end code and transferred to the next station, the next station can determine the end of the page and perform decoding normally.

(Embodiment) FIG. 1 is a block diagram of an embodiment of the present invention. The facsimile apparatus according to the present embodiment includes a reading unit 1 for reading a document, a recording unit 2 for recording a received signal on recording paper, a line memory 3 for storing a signal read by the reading unit 1, and a signal for transmitting a signal from the line memory 3. A data compression / decompression unit (DCR) 4, which compresses the received data and decompresses and decompresses the received compressed data.
A page memory (SAF memory) 5 for storing transfer information and the like;
Buffer memory (BM) 6 for normal transmission or reception,
And a communication control unit (CCU) 7. The facsimile apparatus further includes a control unit 10 for controlling various operations of the facsimile apparatus including these components.
The call transfer control unit includes a memory over determining unit 8 for determining whether the memory of the page memory 5 is over and a page end code to which a page end code (RTC code) is added. A code (RTC code) adding unit 9 is included.

The operation of the embodiment of the present invention configured as described above will be described.

The manuscript of the incoming call transfer from the station S to the station A to the station B is stored in the page memory 5 at the station A. If the discrimination is made, the excess portion is further received by using the buffer memory 6 to receive all originals from the S station. In addition, only the data stored in the page memory 5 is transferred to the station B. In the case of a memory overflow, the RTC code is added to the end of the received data stored in the page memory 5 by the page end code adding unit 9. Send.

FIGS. 5 to 7 are operation flow charts for explaining the operation of the incoming call transfer control unit in FIG. The original to be transferred is stored in the page memory 5 via the CCU 7,
The data is decompressed and decoded by the data compression / decompression unit 4 and recorded on the recording paper by the recording unit 2. During reception, the overflow of the page memory 5 is monitored by the memory overflow determination unit 8. That is, it is determined whether or not data has been stored in the buffer memory 6 beyond the capacity of the page memory 5. If no memory over has occurred, the contents of the page memory 5 are transferred to the B station via the CCU 7. When memory over is determined, the page is transferred after a page end code is added to the end of the last line of the page memory (see FIG. 5).

In order to control the fetching of data from the page memory 5, the page memory 5 has an out pointer for fetching data and a bit counter for counting bits at that time, as shown in FIG. FIG. 6 shows a flow of an end-time process for each line in the process of decoding and recording one page of data in FIG. 5. When decoding is performed by a one-line decoding program and one-line decoding process ends. It is determined whether the last segment of the page memory 5 has been entered, and if not, the process proceeds to the next line. If it is the last segment, it is determined whether the remainder of the line memory is 512 bytes or less, and if not, the process proceeds to the next line. If it is less than 512 bytes, it is determined that the page memory 5 is full, and the output pointer and the bit counter are saved in the RAM of the control unit 10.

FIG. 7 is a flowchart specifically showing a method of attaching an RTC code using an output pointer and a bit counter. As described above, when the memory over is detected, the bit counter and the output pointer saved in the RAM are loaded, and the data specified by the pointer is loaded. Then, the last data is found based on the loaded data and the bit counter. After that, each mode (M
H, MR, MMR), and create an RTC code that fits in the page memory. It is adjusted after the RTC to which the output pointer and the data block counter are added.

As described above, by detecting the memory over and adding the RTC code, the receiving side can normally receive without errors.

(Effect of the Invention) As described above, according to the present invention,
It is configured to monitor for memory over, and if the memory is over, add a page end code (RTC code) to the last part of the page memory and transfer it to the next station.
The contents of the page memory can be transferred normally even when the memory is over when the incoming call is transferred.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, FIG. 2 is a diagram for explaining an outline of the operation of incoming call transfer, and FIG. 3 is data to a page memory and a buffer memory when memory is over. FIG. 4 is a diagram for explaining an out-pointer and a bit counter, and FIGS. 5 to 7 are flowcharts showing the operation of an incoming call transfer control unit in the configuration of FIG. is there. 1 ... Reading unit, 2 ... Recording unit, 3 ... Line memory, 4
…… Data compression / decompression unit (DCR), 5 …… Buffer memory (BM), 6 …… Page memory (SAF memory), 7 ……
Communication control unit (CCU), 8 Memory over determining unit, 9
... Page end code addition unit, 10 ... Control unit.

Claims (1)

(57) [Claims] A memory over determining means for determining a memory over in an incoming call transfer mode, and when the memory over determining means determines that the memory is over, a page for transferring the document over memory to the next station. An incoming call transfer data processing device comprising: a page end code adding means for adding a page end code to the last part of the storage content of the memory.