JPH0310566A - Transmission control method for facsimile equipment - Google Patents

Abstract

PURPOSE:To reduce the transmission time by reading a function code corresponding to a set transmission function with a function code table storage means of a transmitter, informing the readout function code to a receiver and transiting the mode to the picture information transmission state. CONSTITUTION:A system control section 1 applies control processing of each section of a facsimile equipment and a system memory 2 stores the control processing program executed by the system control section 1 and various data required to execute the processing program. A transmitter checks whether or not a received nonstandard function identification signal is coincident with the signal form and when coincident, the function code included in the nonstandard function identification signal is extracted to discriminate a relevant transmission function and the combination of the transmission functions used at that time is selected. Then the function code corresponding to the selected transmission function is extracted from a function code table, the nonstandard function setting signal is formed and sent and after. MODEM training is executed at the set transmission speed, picture information is transmitted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transmission control method for a facsimile machine that can reduce the time required for transmission control procedures.

[Prior Art] In the transmission control procedure of Group 3 facsimile devices, in order to decide on the transmission function to be used at that time before transmitting image information, the receiving device that detects an incoming call sends a message to the transmitting device that can be set by the own terminal. The transmitting device selects the transmission function to be used for image information transmission at that time from among the transmission functions notified by the receiving device, and notifies the receiving device of the selected transmission function, and then transmits the image information. Transitioning to transmission state.

There are two signals for notifying the transmission function from the receiving device to the transmitting device: a digital identification signal DIS for notifying a standard function, and a non-standard function identification signal NSF for notifying a non-standard function. There are different types.

Furthermore, as a signal for notifying the transmission function to be used from the transmitting device to the receiving device, a digital command signal DC5 is used to notify the standard function, and a non-standard function setting is used to notify the non-standard function. There are two types of signal NSS.

Digital identification signal DIS and digital command signal DC5
are standard signals whose contents are specified, but the contents of the non-standard function identification signal NSF and the non-standard function setting signal NSS are determined independently by each facsimile machine manufacturer. Basically, it has a format as shown in FIG.

That is, a signal code for identifying a signal, a country code for identifying the country of manufacture, a manufacturer code for identifying the manufacturer, and one or more function codes (8-bit data) are arranged in this order. It will be done. In addition, in the case of the non-standard function identification signal NSF, the function code indicates all the transmission functions installed in the own terminal, and in the case of the non-standard function setting signal NSS, the function code is used at that time. Each has one or more transmission functions.

[Problem to be solved by the invention] However, the non-standard function identification signal N in such a format
When SF and the non-standard function setting signal NSS are used, the amount of information is large, resulting in an inconvenience that the time required to set the transmission function becomes longer and the total transmission time becomes longer.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a transmission control method for a facsimile machine that can shorten transmission time.

[Means for Solving the Problems] The present invention uses function codes representing combinations of transmission functions to identify and set non-standard functions, thereby reducing the amount of information in those transmission procedure signals. It is.

[Effects] Therefore, since the amount of information in the transmission procedure signal is reduced, the time required to set the transmission function is shortened, and the time required to transmit image information can be shortened.

[Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows a facsimile machine according to an embodiment of the present invention.

In the figure, a system control unit 1 performs control processing for each part of this facsimile machine, and a system memory 2 contains control processing programs executed by the system control unit 1 and necessary when executing processing programs. The parameter memory 3 stores various types of data and constitutes the work area of the system control unit 1. The parameter memory 3 stores various types of information specific to this facsimile machine, such as destination information registered in the one-touch dial. This is for storing one-touch dial information and the like.

The scanner 4 is for reading original images at a predetermined resolution, the plotter 5 is for recording and outputting images at a predetermined resolution, and the operation display section 6 is for operating this facsimile device. It consists of various operation keys and various indicators.

The encoding/decoding unit 7 encodes and compresses the image signal and decodes the encoded and compressed image information into the original image signal, and the image storage device 8 encodes and compresses the encoded and compressed image information. This is for storing a large amount of image information in a different state.

The communication control unit 9 is for executing a predetermined facsimile transmission control procedure including an error correction transmission mode, and the modem 10 is for modulation/demodulation for transmitting digital data using the public telephone network, which is an analog line. The network control device 11 is for connecting this facsimile device to the public telephone line network. The network control device 11 also has an automatic call origination and reception function.

These system control section 1, system memory 2, parameter memory 3, scanner 4, plotter 5, operation display section 6, encoding/decoding section 7, image storage device 8, and communication control section 9 are connected to a system bus 12. The system bus 12 is connected to the system bus 12, and data is exchanged between these elements.

FIG. 2(a) shows an example of a function code table stored in the system memory 2.

This function code table registers function codes consisting of a combination of a plurality of transmission functions, and is used to notify the transmission function by the non-standard function identification signal NSF and the non-standard function setting signal NSS.

In this embodiment, a non-standard function identification signal NSF and a non-standard function setting signal N in a special format as shown in FIG.
SS is used.

That is, a signal code to identify the signal, a country code to identify the country of manufacture, a manufacturer code to identify the manufacturer, a header to indicate that it is a special format signal, and a registration in the function code table. Each function code is arranged in this order.

With the above configuration, when the facsimile machines shown in FIG.
As shown in >, the receiving device first responds with a called station identification signal CED indicating that the own terminal is a non-voice terminal, and then sends a called station identification signal CED to notify the standard transmission function of the own terminal. A digital identification signal D■S, a non-standard function identification signal NSF in the signal format shown in FIG. The call terminal identification signal C3I is sequentially responded to.

The transmitting device receives a non-standard function setting signal NSS in the signal format shown in FIG. 2(b) for notifying the transmission function used in image information transmission and a transmitting terminal identification signal TSI for identifying the transmitting terminal. A training check signal TCP for modem training is transmitted to the receiving device at the transmission rate set at that time.

The receiving device receives the training check signal TCP at the transmission rate set by the non-standard function setting signal NSS, and determines whether the data error at that time is less than or equal to the specified number of bits. At this time, the training check signal T
If the data error is less than the specified number of bits when receiving the CP, the receiving facsimile device determines that the current transmission speed is usable, and responds to the transmitting device with a reception preparation confirmation signal CFR indicating this. .

As a result, the transmitting device transmits the image information PIX to the receiving facsimile device, and when the transmission is finished, transmits a procedure end signal EOP indicating that the image information transmission is finished. Note that in this case, a case is shown in which a one-page transmission document is transmitted.

If the transmission error included in the image information received at that time is less than a specified value, the receiving device responds with a message confirmation signal MCF indicating that the reception result is good.

The sending facsimile machine sends a message confirmation signal M,
When receiving the CF, it transmits a disconnection command signal DCN indicating disconnection of the line and restores the line.

In this way, image information is transmitted from the transmitting device to the receiving device. Also, at this time, the non-standard function identification signal NSF
and non-standard function setting signal NSS as shown in Figure 2(b).
Since the signals in the signal format are used, the amount of information in these signals is reduced, and the time required for image information transmission can be shortened.

Further, in this case, an example of the processing executed by the transmitted information is shown in FIG.

When the transmitting device is ready to transmit and receives a command from the operator to start transmitting, it calls the specified destination and sends a called station identification signal CED when the destination responds to the incoming call.
, digital identification signal DIS, non-standard function identification signal NSF
, and the called terminal identification signal C3I are sequentially received (process 101).

Then, the non-standard function identification signal NSF received at that time
Check whether it matches the signal format in Figure 2(b) (
Judgment 102), when the result of judgment 102 is Y[ES, extract the function code included in the non-standard function identification signal NSF, determine the corresponding transmission function, and select the transmission function to be used at that time. Select a combination of (Process 103).

Then, the function code corresponding to the selected transmission function is extracted from the function code table, and a non-standard function setting signal NSS is formed and sent (104), and modem training is executed at the transmission speed set at that time. Later (processing 105), image information is transmitted (processing 106).
).

Further, when the result of the judgment 102 is NO, a process 107) is performed to set the transmission function to be used based on the content of the digital identification signal DIS received at that time.

The set transmission function is notified to the receiving device using the digital command signal DC3 (processing 108).

After modem training is executed at the transmission rate set at that time (process 109), image information is transmitted (process 110).

In this way, the transmitting device performs non-standard function setting when the non-standard function identification signal NSF received from the receiving device matches the signal format shown in FIG. This reduces the time required for setting functions.

Further, an example of processing executed by the receiving device is shown in FIG.

When the receiving device detects an incoming call, it first sends the called station identification signal C.
After sending out the ED (process 201), a non-standard function identification signal NSF and a digital identification signal DI in the format shown in FIG. 2(b) are sent.
S, and the called terminal identification signal C5I are sequentially transmitted (
Process 202).

When the setting signal sent from the transmitter is received, it is checked whether it is a non-standard function setting signal NSS having the same format as the non-standard function identification signal NSF (determination 20).
3) When the result of judgment 203 is YES, Shiko extracts the function code included in the non-standard function setting signal NSS, determines the corresponding transmission function, and selects the transmission function to be used at that time. It is set in the own terminal device (process 205).

After modem training is executed at the transmission rate set at that time (process 206), image information is received (process 207).

Further, when the transmitting device cannot analyze the non-standard function identification signal NSF in the format shown in FIG. 2(b) and sends out the digital command signal DC5, and the result of judgment 203 becomes No,
The contents of the digital command signal DC5 are analyzed to determine the transmission function to be used (process 208), and the transmission function is set in the own terminal (process 209).

After modem training is executed at the transmission rate set at that time (process 210), image information is received (process 211).

In this way, the receiving device receives information from the transmitting device in FIG.
) When a non-standard function identification signal NSF in the form of The digital command signal DC3 is analyzed to set the transmission function.

By the way, if the transmitter stores the transmission functions that can be used at each destination for each destination, it is possible to use the transmission procedure shown in FIG. 3(b), for example.

That is, in this case, after the transmitting device calls the receiving device, the receiving device responds to the incoming call and sends the called station identification signal CED.
When it detects that the receiving device has sent a non-standard function setting signal NSS in the format shown in FIG. The signal TSI is transmitted, and the training check signal TCP for modem training is transmitted to the receiving device at the transmission rate set at that time.

The receiving device receives the non-standard function setting signal N at that time.
When the transmission function notified by SS can be used,
Just go through the training procedure and follow the steps that follow.

This further reduces the time required for the transmission procedure.

On the other hand, when the receiving device cannot use the transmission function notified by the non-standard function setting signal NSS received at that time, it ignores the first received training check signal TCP, as shown in (C) of the same figure. , a non-standard function identification signal NSF, and a digital identification signal D for notifying the own terminal function after receiving the training check signal TCP.
IS and the called terminal identification signal DIS are sent, and thereafter, the same procedure as in FIG. 4(a) is executed.

In this case, the transmitting device, for example, as shown in FIG.
The transmission function of each destination is stored by additionally registering a function code corresponding to the transmission function set for each destination in one-touch dial information for storing destination information registered in the one-touch dial. Also,
The registration of the function code is always updated to the latest content each time image information is sent to the destination.

[Effects of the Invention] As explained above, by using function codes representing combinations of transmission functions to identify and set non-standard functions, the amount of information in those transmission procedure signals is reduced. , set the transmission function. This results in an effect that the time required for image information transmission can be shortened.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a facsimile machine according to an embodiment of the present invention, FIG. 2(a) is a schematic diagram showing an example of a function code table, and FIG. A schematic diagram showing an example of the signal format of the function setting signal, FIG. 3(a) is a time chart showing an example of the transmission procedure, FIG. 3(b) is a time chart showing another example of the transmission procedure, and FIG. ) is a time chart showing yet another example of the transmission procedure, FIG. 4 is a flowchart showing an example of processing by the transmitting device, and FIG. 5 is a flowchart showing an example of processing by the receiving device.
FIG. 6 is a schematic diagram showing an example of one-touch dial information;
FIG. 7 is a schematic diagram showing the signal format of a standard non-standard function identification signal and a non-standard function setting signal. 1... System control unit, 2... System memory, 3
...Parameter memory. 2 9 Figure 1\(-) Figure 2 Figure Figure (a) (b) (C) Figure

Claims (2)

[Claims] (1) A function code table storage means is provided for storing a function code table in which function codes consisting of combinations of transmission functions are registered, and in the pre-transmission procedure, the receiving device transfers the transmission function of its own terminal to the transmitting device using the function code. The transmitting device sets the transmission function to be used for image information transmission based on the function code notified by the receiving device, and
A transmission control method for a facsimile apparatus, characterized in that the function code corresponding to the set transmission function is read from the function code table storage means, the read function code is notified to the receiving apparatus, and then the image information transmission state is entered. . (2) Function code table storage means for storing a function code table in which function codes consisting of combinations of transmission functions are registered, and destination management information for storing destination management information representing function codes corresponding to transmission functions for which destinations can be set. The transmitting device includes a storage device, and the transmitting device reads destination management information corresponding to the specified destination from the destination management information storage device, determines a function code that can be set for the destination, and when the receiving device responds to the incoming call, the transmitting device reads the destination management information corresponding to the specified destination from the destination management information storage device and determines the function code that can be set for the destination. On the other hand, if the receiving device can set the transmission function corresponding to the function code notified from the transmitting device when responding to the incoming call, the receiving device sets the transmission function to its own terminal and changes the image information reception state. , and if it is not possible to set the transmission function corresponding to the function code notified from the transmitting device when answering the incoming call, it notifies the transmitting device of the function code corresponding to the transmission function that can be used on the own terminal. When the receiving device accepts the function code notified when the receiving device responds to the incoming call, the transmitting device shifts to an image information transmitting state using the initially set transmission function,
When the receiving device does not accept the function code and responds with another function code, the function code table storage means sets a transmission function to be used for image information transmission based on the function code notified by the receiving device. 1. A transmission control method for a facsimile apparatus, comprising reading a function code corresponding to a set transmission function, and notifying a receiving apparatus of the read function code, and then shifting to an image information transmission state.