JP3076100B2 - Facsimile machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile apparatus for receiving image data in a memory.

[0002]

2. Description of the Related Art In a conventional facsimile apparatus, image data from a partner transmitter is received in a memory, and the received image data is output onto a recording paper by a printing operation of a printing unit which is slower than the receiving operation of the memory. It is supposed to.

[0003]

Therefore, in the above conventional example, since the printing speed is slower than the image data receiving speed, there is a drawback that a communication error occurs when the memory receiving the received data becomes full. Was. On the other hand, if a large-capacity memory is prepared in order to prevent a communication error, there is a disadvantage that the cost increases.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a facsimile apparatus which can maintain a good communication state without increasing a memory capacity for receiving image data and avoiding a memory full due to a printing delay. And

[0005]

According to the present invention, there is provided a communication system, comprising:
A storage unit for receiving the image data from the memory, and the storage unit
The received image data stored in the
Facsimile with a recording unit that prints at a speed lower than
When the remaining amount of storage in the device reaches a predetermined amount, transmission
Start delaying the start of image transmission of the next page by the user
A delay means and a memory capacity while delaying the transmission start.
When the amount recovers, the next page is received without changing the communication speed.
And a facsimile machine having a receiving means for receiving the information.

More specifically, before the storage unit becomes full, an RTP signal (retraining affirmative signal) at the partner transmitter is transmitted to return the partner transmitter to phase B, and the CCITT recommendation T.30 is used. T1 timer by 30 (35
The second page is effectively used to prevent the next page from being sent, thereby printing information in the storage unit during that time.

[0007]

FIG. 1 is a block diagram showing an embodiment of the present invention.

The facsimile apparatus includes a recording section 1 for printing an image on a recording sheet, a control section 2 such as a CPU for controlling the entire apparatus, and a communication section for bringing the apparatus into a state capable of communicating with a partner facsimile apparatus. 3, a storage unit 4 provided with a buffer memory area for receiving received image data, a data memory area for holding a timer value, a flag, and the like, and a signal sending unit 5 for sending a signal to a partner device. In the buffer memory area, a warning point before the memory area becomes full is set in advance, and is monitored by the control unit 2.

FIG. 2 is a schematic diagram showing a transmission procedure in this embodiment, and FIG. 3 is a flowchart showing the operation of the receiver.

When detecting that the buffer memory area has exceeded the warning point during the reception of one page, the control unit 2 determines whether or not there is room in the buffer memory area at the end of the page (S1) (S2). ), If you can afford it,
The receiving operation is continued according to the normal procedure (S3).

When there is no room in the buffer memory area, if the signal received from the other party at that time is an MPS signal (multi-page signal), it is determined that the transmission of a plurality of sheets without mode change is to be performed and the RTP signal Is sent. Also, EO
In the case of the M signal (message end signal), it is determined that transmission of a plurality of sheets with mode change is to be performed, and an MCF signal (message confirmation signal) is transmitted (S4). Thus, in either case, the other party's transmitter returns to phase B.

On the other hand, since the image data in the buffer memory area is printed by the recording unit 1, if there is room in the buffer memory area during the T1 timer time (35 seconds) (S5). Then, a DIS signal (digital identification signal) which does not change the transmission speed is transmitted to request the next page (S6). If there is no room in the memory within the T1 timer time (S7), a DIS signal with a reduced transmission speed is sent to request the next page (S8).

In this manner, page transmission is performed between the transmitter and the transmitter in accordance with the recording operation on the receiving side, thereby avoiding the memory full of the buffer memory area and ensuring a normal communication state.

[0014]

According to the present invention, the memory capacity is reduced
When the amount recovers, the next page is received at the same communication speed
This has the effect that the communication efficiency does not decrease.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a schematic diagram showing a transmission procedure of the embodiment.

FIG. 3 is a flowchart showing an operation of the receiver of the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Recording part, 2 ... Control part, 3 ... Communication part, 4 ... Storage part, 5 ... Signal transmission part.

Claims (2)

(57) [Claims] An image data from a partner transmitter is received in a memory.
And a received image data stored in the storage unit.
Is printed at a lower speed than the reception speed of the above memory reception.
When the remaining amount of the storage unit reaches a predetermined amount in a facsimile apparatus having a recording unit
Transmission start delay means for delaying the start of transmission of image of page
And if the memory capacity recovers while delaying the transmission start
For example, a receiver that receives the next page without changing the communication speed
A facsimile apparatus comprising: a step; 2. The method according to claim 1, wherein the RTP is transmitted in place of the MCF when the memory capacity is insufficient.
After that, the transmission of the DIS is delayed up to the T1 timer.
This allows the sender to start sending the next page.
A facsimile machine characterized by delaying .