JPH04223668A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To shorten the time of falling back and to attain high speed transmission by preventing useless training to the utmost. CONSTITUTION:Training is started from the transmitting speed of a past stored every a transmitting destination or the speed faster for one stage than that. Besides, when stored contents are rewritten every the transmission of respective times so that the transmitting speed when transmission is executed previously may be stored in a storing means 1 and moreover the training is started from the transmitting speed faster for the one stage than the transmitting speed stored in it, even when a connecting line with an opposite destination and the facsimile equipment of the opposite destination are updated and the higher speed transmission is attained, the transmitting speed updated newly is stored automatically by transmitting to the transmitting destination for several times and the facsimile equipment with better operation convenience is attained.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to facsimiles, and more particularly to facsimile transmission speed control.

0002

2. Description of the Related Art When transmitting and receiving signals between facsimile machines, various transmission speeds are used in combination due to line restrictions and facsimile equipment limitations. For this reason, conventionally, when trying to send dummy data from one facsimile to another, it was first attempted to send dummy data at the maximum speed of, for example, 9,600 bps, and if the data was not successfully transmitted, it was then tried to send dummy data at a second speed such as, for example, 7,200 bps. Attempts to send dummy data at a fast transmission speed, and if the dummy data is not sent successfully, attempts to send dummy data at a sequentially slower speed.This allows the actual document to be sent at the highest transmission speed possible. It is being done.

0003

[Problem to be Solved by the Invention] However, if we always try to transmit dummy data at sequentially slower speeds starting from the maximum speed as described above (this attempt to transmit dummy data is called "training"), In particular, in the case of a destination that can only transmit and receive data at a slow speed, the above training will be repeated many times, resulting in a long fallback time, which goes against the requirement for high-speed transmission.

SUMMARY OF THE INVENTION In view of the above circumstances, it is an object of the present invention to provide a facsimile machine that can reduce the fallback time by preventing the above-mentioned wasteful training as much as possible.

[0005]

[Means for Solving the Problems] FIG. 1 is a diagram showing the claims of the facsimile machine of the present invention.

[0006] The storage means 1 stores the transmission speeds of past transmissions for each destination. This transmission speed may be automatically stored, for example, at the time of the last transmission, or may be set manually.

[0007] When a destination is designated, the control means 2 reads the transmission speed corresponding to the designated destination stored in the storage means 1 from the storage means 1, and sets the transmission speed or this transmission speed. Training is sequentially attempted starting from a transmission speed one step faster than the original transmission speed, and the original is transmitted at the fastest speed at which the dummy data can be transmitted.

[0008]

[Function] In the facsimile machine of the present invention, training is started from the past transmission speed memorized for each destination or from a speed one step faster than that, which eliminates unnecessary training as much as possible. It is possible to shorten the backing time.

[0009] Furthermore, the memory contents are rewritten each time the transmission is performed so that the transmission speed at the time of the previous transmission is stored in the storage means, and furthermore, the transmission speed that is one step faster than the transmission speed stored therein is rewritten. If you start training, even if the connection line with the recipient or the recipient's facsimile machine has been updated and faster transmission is possible, the transmission will be automatically performed by sending to that recipient several times. The newly updated transmission speed will be stored in the fax machine, making the facsimile machine more user-friendly.

0010

Embodiment FIG. 2 is a flowchart of a program executed within the control means according to the present invention. This facsimile machine stores the transmission speed of the previous transmission to that destination for each destination. This is a program that is executed after the transmission speed at the time of transmission is read.

First, it is determined whether the previous transmission speed is 9600 bps, which is the maximum speed that can be transmitted by this facsimile (step (a)), and if not, it is determined in the following order whether it is 7200 bps or not. (Step (b)), whether it is 4800 bps or not (Step (
c)) is determined.

[0012] Here, if the previous transmission speed was 9600 bps, there is no higher speed, so step (d)
Training is performed by flying to the site and setting the transmission speed to 9,600 bps. Also, the previous transmission speed was 7200bp.
If it is 9600 bps, the training is basically started from a transmission rate that is one step higher, so the process jumps to step (d) and the transmission rate is set to 9600 bps and training is performed. Next this 9600b
ps training to determine whether or not the transmission was successful to the destination (step (e)). If the transmission was successful, the document is transmitted at 9600 bps (step (f)), and this transmission speed of 9600 bps is newly stored as the transmission speed for this destination (
Step (g)).

[0013] In addition, if in the training in step (e) above, 9600bps is not enough to successfully transmit to the destination, and if in step (c) it is determined that the previous transmission speed is 4800bps, then step (h) is performed. Proceed to , the transmission speed is set to 7200 bps, training is performed at this 7200 bps,
It is determined whether this training was successful or not (step (i)), and if this training was successful, this 7
The original is transmitted at 200bps (step (j)
), this 7200 bps is stored as a new transmission rate (step (g)). Also in step (i) 720
If it is determined that the training was unsuccessful at 0 bps, and if the previous transmission rate is 480 bps in step (c),
If it is not even 0 bps, proceed to step (k) and
Transmission training is performed at 800 bps. Also, the slowest transmission speed that can be sent with this facsimile is 2400 bps, which is one step below this 4800 bps.
If it is determined in step (c) that the previous transmission speed was not even 4800bps, the previous transmission speed is 240bps.
Without determining whether or not it was 0 bps, the process proceeds to step (k) and training is performed at 4800 bps. It is determined whether the training in step (k) was successful (step (l)), and if it was successful, transmission is performed at 4800 bps (step (m)), and this 4800 bps is stored ( Step (g)). Further, if it is determined that the training in step (k) is unsuccessful (step (l)), the transmission rate is set to 2400 bps and training is performed (step (n)), and if the training is successful. It is determined whether or not (step (o)), and if it is successful, the original is transmitted at 2400 bps (step (o)).
p)), this 2400 bps is stored (step (
g)). If the 2400 bps training is also unsuccessful, a message indicating that communication is not possible is output (step (q)), and the transmission attempt is terminated.

As described above, in this embodiment, training is basically started from a transmission speed that is one step higher than the previous transmission speed, so that the fallback time during training can be shortened. In addition, by starting training at a higher transmission speed, even if it becomes possible to send at a faster transmission speed due to an update to the communication line or destination facsimile, the transmission speed may be increased several times. As you do this, you will automatically be able to memorize the faster transmission speed.

[0015]

[Effects of the Invention] As explained in detail above, the facsimile of the present invention stores the transmission speed for each destination in the storage means, and reads out the stored transmission speed when the destination is limited. Since training is started from that transmission speed or a transmission speed one step higher, unnecessary training is omitted and fallback time can be shortened.

[Brief explanation of the drawing]

[Figure 1] Diagram showing the configuration of the present invention

[Figure 2] Flowchart of a program executed within the control means

[Explanation of symbols]

1. Storage means 2 Control means

Claims (1)

[Claims] 1. A storage means for storing a transmission speed for each transmission destination in the past, and a storage means for storing a transmission speed for each transmission destination when a transmission destination is to be transmitted from now on. 1. A facsimile machine comprising: control means for controlling a transmission speed so as to read the transmission speed from the means and start training for transmission from the transmission speed read out or a transmission speed one step higher than the transmission speed.