JP2527630B2 - Fax machine - Google Patents

Description

The present invention relates to a facsimile machine.

(B) Conventional technology Generally, in a facsimile machine that performs recording with an electrophotographic printer that uses regular-sized recording paper, the image data is first expanded in a page memory and then output in synchronization with the printer for printing. To do.

In such a device, when polling transmission (hereinafter referred to as reverse polling transmission) as disclosed in, for example, Japanese Patent Laid-Open No. 57-129579 is performed immediately after receiving data, in a system in which a memory for reading and a memory for printing are shared. It is necessary to make the partner machine wait until the printing of the image data is completed, or to equip the reading / coding memory with a system different from the printing memory.

C) Problems to be Solved by the Invention As described above, if the other machine is made to wait until the printing of the previously received data is completed, the communication time becomes long and it is uneconomical, and further it takes time to print. , There is also a risk of disconnecting the line from the other machine due to non-response.

In addition, if the reading / coding memory is provided in a system different from that of the printing memory, the circuit configuration becomes large, which is uneconomical.

D) Means for Solving the Problems The present invention comprises a code memory for storing image information as code data and a page memory for storing image information as dot data, and stores the read image information in the page memory during transmission. In a facsimile apparatus for transmitting image information stored in the page memory while encoding the same and storing the code data in the code memory at the time of reception, decoding the code data and expanding and copying the code data in the page memory, Transmission request detection means for detecting whether or not transmission is necessary immediately after receiving the image data, and first recording operation control means for temporarily stopping the recording operation of the received image information when the transmission request is detected by the transmission request detection means. And a transmission operation control means for executing the operation at the time of transmission after the recording operation by the first recording operation control means is stopped, and the transmission operation After completion of the operation at the time of transmission by the control means, characterized in that and a second recording operation control means for resuming execution of the recording operation.

E) Operation By taking the above-mentioned means, it is possible to economically communicate when performing reverse polling transmission without making the other machine wait for printing, and for printing the memory for reading and coding. There is no need to have two systems of memory.

F) Embodiment An embodiment of the facsimile apparatus according to the present invention will be described below with reference to the drawings. In FIG. 2, (1) is a main control unit of the facsimile apparatus, which includes a microprocessor and a first control unit.
Including a memory that stores the control procedure shown in the figure
(2) is a key input unit operated by an operator, (3) is a communication control unit for performing image communication control according to the facsimile communication control procedure of G III, (4) is a reading control unit for controlling reading of a document, and (6) ) Is a page memory for storing image data (dot data) obtained by the reading control unit (4) or obtained by reception, and (5) is MH, M
A coding / decoding control unit that performs coding and decoding such as R,
(8) is a code memory for temporarily storing code data, and (7) is a printer for recording the image data of the page memory (4), which is a plurality of recordings in which fixed-size recording papers of different sizes are stacked and stored. A paper cassette (not shown) can be selectively set, and the set cassette has a function of recognizing the length of the standard length recording paper.

The reverse polling transmission operation during the operation of the embodiment configured as described above will be described with reference to the flowchart of FIG. 1 executed by the main control unit (1) on the called side.

The reverse polling transmission means that image data is transmitted from the calling side, and a document is read from the called side and transmitted immediately after being received by the called side.
As shown in the figure. In FIG. 3, DIS is a digital identification signal, DCS is a digital command signal, CFR is a reception preparation confirmation signal, EOM is a message confirmation signal, DTC is a digital transmission command signal, EOP is a procedure end signal, and DCN is a line. Disconnection command signals are shown respectively, and all are G III communication procedure control signals specified in CCITT T30. Whether or not to perform reverse polling transmission is set by the input from the key input unit (2) on the calling side, EOM is sent after the image data is sent from the calling side, and MCF and DIS signals from the called side. Is transmitted, the transmission command signal DTC is transmitted from the calling side, DCS and CFR are exchanged in response thereto, and then the image data is transmitted from the called side (see FIG. 3).

In FIG. 1, if an incoming call is now detected in step S1, the process proceeds to step S3 of the receiving process, and if not, another process is performed (S2). In S3, receive procedure DIS transmission, DC in Fig. 3
S reception and CFR transmission are performed, and image data reception is step S
When it is confirmed in 4, the received code data is stored in the code memory of (8) (S5), and the code decoding control unit (5)
Is decrypted in and expanded in the page memory (6) (S
6). Then, if a signal other than image data is detected in S4, the process proceeds to step S7, if EOM is detected here, the process proceeds to step S9, and otherwise, other control is performed in step S8. The printer (7) is started in S9, and the printer R sent from the printer (7) in step S10.
Monitor the eady signal. When YES is determined in S10, the image data is read from the memory (6) for each predetermined amount (recordable image data amount determined by detecting the length of the recording sheet in the sub-scanning direction in this embodiment = 1 page). Transfer to the printer (7) and print out. In step S12, the amount of image data developed in the page memory (6) is compared with the amount of image data printed out in step S11. If they are equal, the printer (7) is stopped in step S13. If data remains, the process returns to step S10.

Incidentally, the print (7) is activated by the printer, and when the record data can be received, the printer ready signal is transmitted. The image data is sent to the printer and recorded in synchronization with the synchronization signal of the printer. When the recording paper is ejected and the next recording data can be received, the print ready signal is output again.

When the print ready signal is not output in S10, step S1
At 4, the reception of the DTC signal shown in FIG. 3 is monitored. In the present embodiment, the image data developed in the page memory (6) is read out for each image data length recordable on the standard length recording paper and recorded on the recording paper. Since such divided recording takes time to print out, YES may be determined in S14 before printing out all the image data expanded in the page memory (6). If YES is determined, the process proceeds to step S15. Since NO in this case, the printout is temporarily stopped at step S16, and the printout restart position on the page memory (6) is stored in the printout restart position. Store in a register (not shown). Now tentatively
In the figure, it is assumed that the printing out of the image data for one sheet of recording paper is completed (transmission of the image data to the printer is completed). In this embodiment, when the divided recording is performed, the lower end portion (D) of the image data of the previous page is recorded as the overlapping recording portion at the beginning of the next page, so that the recording on the page memory (6) is performed. The out restart position (b) is a position (address) before the overlapping recording portion (D) before (a).

Then, in step S17, the operation shifts to the transmission operation. Here, the document set in the document reading unit is stored as dot data in the reading page memory (6) under the control of the reading control unit (4). This storage erases the received image data in the page memory (6). Then, the dot data (6) is encoded by the encoding / decoding control unit (5) and transmitted to the calling side. When data transmission is completed, EOP, MC
After sending / receiving F, the transmission operation is completed by DCN.

Next, in step S18, the received image data is read from the head from the code memory (8), decoded, and expanded again in the page memory (6). This state is the same as that shown in FIG. 4 before transmission, and the restart position (b) is read from the register for storing the print restart position, and the image data thereafter is sent to the printer (7) for printing. (S19).

The present invention is not limited to the above embodiment,
The printout restart position is the position (a) when the overlapping recording is not performed. Further, if the unit of image data transfer with the printer is not the page unit, the restart position may be set in the middle of the page.

Further, the present invention can be applied not only to reverse polling transmission but also to a facsimile apparatus that temporarily suspends printout and prints out unprinted data after the transmission when transmission is urgently desired due to the reception side.

G) Effect of the Invention According to the present invention configured as described above, it is possible to perform transmission prior to printout of received data, which is suitable for polling transmission and the like. In addition, it is not necessary to use two systems, a read-encoding memory for performing reading and recording at the same time, and a printing memory, which is a great effect.

[Brief description of drawings]

FIG. 1 is a reverse polling operation flowchart showing an embodiment of the present invention, FIG. 2 is a block diagram of the embodiment, and FIG.
FIG. 4 is a diagram for explaining the reverse polling communication procedure of the G3 facsimile of the embodiment, and FIG. 4 is a schematic diagram of a page memory showing the operation of the embodiment. (1) …… Main control unit, (6) …… Page memory (7) …… Printer, (8) …… Code memory

Claims (1)

(57) [Claims] 1. A code memory for storing image information as code data, and a page memory for storing image information as dot data. At the time of transmission, the read image information is stored in the page memory and stored in the page memory. While transmitting the image information while encoding, while storing the code data in the code memory,
In a facsimile apparatus which decodes coded data, expands it in the page memory and prints it, a transmission request detecting means for detecting whether or not transmission is necessary immediately after receiving image data, and a transmission request is detected by the transmission request detecting means. A first recording operation control means for temporarily stopping the recording operation of the received image information, and a transmission operation control means for executing the operation at the time of transmission after the recording operation is stopped by the first recording operation control means. A facsimile apparatus comprising: a second recording operation control means for restarting the recording operation after the transmission operation by the transmission operation control means is completed.