JP2000244719A - Facsimile equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten communication time by omitting a phase 2 by performing an original procedure in the phase 1. SOLUTION: The telephone number of an opposite destination with which communication is performed once and information received by INFOh are stored in a memory. When an operator performs transmission to a number originated in the past, this facsimile equipment sends out the tones (defined as X1 signals) of a band not used in V.21L, V.21H, tone A and tone B instead of CM signals at the time of receiving ANSam and reports that an abbreviated procedure is to be started to a receiver. The receiver is provided with both of the X1 signals and the CM signals and executes the abbreviated procedure at the time of receiving the X1 signals and a normal procedure at the time of receiving the CM signals. After sending out the X1 signals, at the time of confirming that a receiver side also starts the abbreviated procedure, X2 signals equivalent to the contents of the INFOh are sent out, a communication parameter is reported to the receiver side and thereafter, shifting to the phase 3 is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a facsimile apparatus, and more particularly to a reduction in communication time after phase 2.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. Hei 9-186838 (facsimile apparatus) discloses a facsimile apparatus in which an unnecessary communication procedure at the start of communication is omitted to shorten the time until the start of facsimile communication and improve transmission efficiency. Has been proposed.

[0003]

However, in the above prior art, the V.V. Since only eight steps were omitted, it did not contribute much to shortening the communication time.

[0004] The invention of claim 1 omits phase 2 by performing a unique procedure in phase 1,
The purpose is to shorten the communication time.

An object of the present invention is to shorten the communication time by omitting phases 2 and 3 by performing a unique procedure in phase 1.

The third object of the present invention is to shorten the communication time by omitting phases 2 to 5 by performing a unique procedure in phase 1.

[0007]

According to the first aspect of the present invention, there is provided a video communication system comprising:
After receiving ANSam, the transmission control means of V.34. 21L, V.I. 21H, toneA and toneB, transmit a tone in a band not used to notify that it is in the shortening procedure, and confirm that the receiver has entered the shortening procedure.
It is characterized in that a signal corresponding to the content of NFOh is transmitted, then the communication parameters are notified to the receiver side, and thereafter, the phase shifts to phase 3 and phase 2 is omitted.

[0008] The invention of claim 2 is based on After receiving ANSam, the transmission control means of V.34. 21L, V.I. 2
1H, toneA, toneB sends out the tone of the band which is not used, notifies that it enters the shortening procedure, and confirms that the receiver has entered the shortening procedure, and then sends a signal containing the contents of INFOh and the data rate. Is transmitted, and then the communication parameters are notified to the receiver side, and thereafter, the phase shifts to phase 4 and the phases 2 and 3 are omitted.

The invention according to claim 3 is based on After receiving ANSam, the transmission control means of V.34. 21L, V.I. 2
1H, toneA, toneB is transmitted in a band not used in toneB to notify that it is in the shortening procedure. After confirming that the receiver has entered the shortening procedure, the contents of INFOh and data rate, and transmission by phase 5 A signal containing information transmitted from the transmitting side and all information transmitted from the receiving side to the transmitting side is transmitted, and phases 2 to 5 are omitted.

[0010]

FIG. 4 is a block diagram for explaining an example of a facsimile apparatus to which the present invention is applied. In FIG. 4, reference numeral 1 denotes a scanner for reading an original image to extract image information, and 2 for an image. The plotter 3 records the image information to be transmitted on a recording paper according to a known encoding method, and encodes the image information to be transmitted to perform data compression, while decoding the received image information and reproduces the original image information. Reference numeral 4 denotes a memory for storing the telephone number of the other party once communicated and information received by INFOh, and 5 denotes a modem for modulating and demodulating image information and transmitting the same, and transmitting various procedural signals for transmission control. ,
A network control unit 6 is connected to a telephone line and controls a line for making and receiving calls, and 7 displays an operation state of the device.
An operation display section for performing various operations by an operator, a system control section 8 which is a microcomputer for controlling the above sections, and a system bus 9 for signal lines through which the above sections exchange various control signals and data with each other.

(Invention of Claim 1) FIG. 1 is a diagram for explaining a transmission control procedure according to the invention of claim 1, wherein a telephone number of a communication destination once communicated and information (symbol rate, carrier rate) received by INFOh are received. Frequency, transmission level, pre-emphasis, etc.) are stored in the memory 4 shown in FIG. When the facsimile machine receives ANSam when transmitting to a number that the operator has previously called, the facsimile machine replaces the CM signal with V.V. 21L, V.I. 21H, toneA, t
A tone in a band not used in oneB is transmitted (referred to as X1 signal), and the receiver is notified that a shortening procedure is to be started. The receiver waits for both the X1 signal and the CM signal, executes the shortening procedure when receiving the X1 signal, and executes the normal procedure when receiving the CM signal. The transmitting side executes the normal procedure when the ANSam does not stop even when the X1 signal is output, or when the NSF signal and the DIS signal arrive, and executes the shortening procedure when the ANSam signal stops.
After transmitting the X1 signal and confirming that the receiver has also entered the shortening procedure, it transmits an X2 signal corresponding to the contents of INFOh and notifies the receiver of communication parameters. After that, the process proceeds to phase 3 and communication is performed according to a normal procedure.

(Invention of Claim 2) FIG. 2 is a diagram for explaining a transmission control procedure according to the invention of claim 2, wherein the telephone number of the other party once communicated and the information (symbol rate, carrier The data rate exchanged with the data (frequency, transmission level, pre-emphasis, etc.) is stored in the memory 4 shown in FIG. When sending to a number that the operator has previously called, the facsimile machine
am is received instead of the CM signal. 21L, V.I.
A tone in a band not used in 21H, toneA, and toneB is transmitted (referred to as an X1 signal), and the receiver is notified that a shortening procedure is to be started. The receiver waits for both the X1 signal and the CM signal, executes the shortening procedure when receiving the X1 signal, and executes the normal procedure when receiving the CM signal. On the transmitting side, ANSam does not stop even if the X1 signal is output, or the NSF signal, D
When the IS signal comes, the normal procedure is executed, and when the ANSam signal stops, the shortening procedure is executed. After transmitting the X1 signal and confirming that the receiver has also entered the shortening procedure, the receiver transmits an X3 signal containing information on INFOh and data rate information.
Notify the receiver of communication parameters. Thereafter, the process proceeds to phase 4, and communication is performed in accordance with a normal procedure.

(Invention of Claim 3) FIG. 3 is a diagram for explaining the transmission control procedure of the invention of claim 3, wherein the telephone number of the communication destination once communicated and the information (symbol rate, carrier The data rate exchanged with the data (frequency, transmission level, pre-emphasis, etc.) is stored in the memory 4 shown in FIG. When sending to a number that the operator has previously called, the facsimile machine
am is received instead of the CM signal. 21L, V.I.
A tone in a band not used in 21H, toneA, and toneB is transmitted (signal X1), and the receiver is notified of the start of the shortening procedure. The receiver waits for both the X1 signal and the CM signal, executes the shortening procedure when receiving the X1 signal, and executes the normal procedure when receiving the CM signal. On the transmitting side, ANSam does not stop even if the X1 signal is output, or the NSF signal
When the IS signal comes, the normal procedure is executed, and when the ANSam signal stops, the shortening procedure is executed. After transmitting the X1 signal, it is confirmed that the receiver has also entered the shortening procedure, and the contents of INFOh and the data rate, information transmitted from the transmitting side by phase 5 and all information transmitted from the receiving side to the transmitting side are entered. X4 signal is transmitted to notify the receiver of communication parameters. Thereafter, the process proceeds to phase 6, where the communication is performed according to the normal procedure.

[0014]

According to the first aspect of the present invention, the telephone number of the other party once communicated and the information received by INFOh are stored in the memory, and when the operator transmits the information to a number which has been transmitted in the past, When ANSam is received, V.V. 21L, V.I. 21H, toneA, to
A tone in a band not used in neB is transmitted (referred to as X1 signal), the receiver is notified that the shortening procedure is to be started, and when the receiver confirms that the shortening procedure has been started, X2 corresponding to the contents of INFOh is checked. Send a signal, and then inform the receiver of communication parameters, and then proceed to phase 3,
Since the communication is performed according to the normal procedure, the communication time can be reduced by the amount corresponding to the end of the phase 1 and the procedure of the phase 2 as compared with the normal procedure.

According to the second aspect of the present invention, the telephone number of the other party once communicated, the information received by INFOh, and the data rate communicated are stored in the memory, and transmitted to a number to which the operator has transmitted in the past. When you do, ANSam
Is received instead of the CM signal. 21L, V.I. 21
H, toneA, and toneB in a band not used in toneB are transmitted (referred to as an X1 signal), the receiver is notified that the shortening procedure has been started, and the receiver has confirmed that the shortening procedure has been started. An X3 signal containing data rate information is transmitted, and then the communication parameters are notified to the receiver side. Thereafter, the phase shifts to phase 4 and communication is performed according to the normal procedure. The communication time can be reduced by the amount corresponding to the end and the procedures of phase 2 and phase 3.

According to the third aspect of the present invention, the telephone number of the other party once communicated, the information received by INFOh, and the data rate communicated are stored in the memory, and transmitted to a number that the operator has transmitted in the past. When you do, ANSam
Is received instead of the CM signal. 21L, V.I. 21
H, toneA, and toneB in a band not used in toneB are transmitted (referred to as an X1 signal), the receiver is notified that the shortening procedure has been started, and the receiver has confirmed that the shortening procedure has been started. And the data rate, an X4 signal containing information transmitted from the transmitting side and all information transmitted from the receiving side to the transmitting side by phase 5 is transmitted, and the communication parameters are notified to the receiver side. Since the communication is performed according to the normal procedure, the communication time can be reduced by the amount corresponding to the end of phase 1 and the procedures from phase 2 to phase 5 as compared with the normal procedure.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining a transmission control procedure according to the first embodiment of the present invention;

FIG. 2 is a diagram for explaining a transmission control procedure according to the invention of claim 2;

FIG. 3 is a diagram for explaining a transmission control procedure according to the invention of claim 3;

FIG. 4 is a block diagram illustrating an example of a facsimile apparatus to which the present invention is applied.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Scanner, 2 ... Plotter, 3 ... Encoding / decoding part, 4
... Memory, 5 Modem, 6 Network control unit, 7 Operation display unit, 8 System control unit, 9 System bus.

Claims (3)

[Claims] Claims 1. 34, the transmission control means
After receiving Sam. 21L, V.I. 21H, tone
A, toneB of a band not used in toneB is transmitted to notify that the procedure is abbreviated, and after the receiver confirms that the procedure is abbreviated, a signal corresponding to the contents of INFOh is transmitted. A facsimile apparatus which notifies a communication parameter to a machine side, and thereafter shifts to phase 3 to omit phase 2. 2. V. 34, the transmission control means
After receiving Sam. 21L, V.I. 21H, tone
A, toneB is used to send out the unused band to notify that it is in the shortening procedure. After confirming that the receiver has entered the shortening procedure, it sends out a signal containing INFOh contents and data rate information. A facsimile apparatus characterized in that a communication parameter is notified to a receiver side, and then the phase shifts to phase 4 to omit phases 2 and 3. 3. V. 34, the transmission control means
After receiving Sam. 21L, V.I. 21H, tone
A, toneB of the band not used in toneB is sent out to notify that it is in the shortening procedure, and after confirming that the receiver has entered the shortening procedure, the contents of INFOh and the data rate, from the transmitting side by phase 5 A facsimile apparatus which transmits a signal containing information to be transmitted and all information to be transmitted from a receiving side to a transmitting side, and omits phases 2 to 5.