JPH0229069A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To save the time and number of sheets sending again unsharpened recording by providing a means requesting the revision of the parameter attended with the communication from a reception terminal equipment to a transmission terminal equipment. CONSTITUTION:If the operator discriminates the 1st picture signal to be 'recording is not clear' at a station B receiving the said signal, a parameter satisfying the condition from the next page is inputted through an operation section 5B and a terminal control section 6B stores the presence of a parameter revision request. When a station A sends a multi-page signal to the station B, a retrain affirmative reply is returned to the station A in place of message acknowledge and the parameter and the parameter revision request selected by the operator are returned to the station A. The station A sends NSS, DCS and TCF according to the designated parameter, sends the coded picture signal by the parameter after the revision after the reception of the CFR from the station B and the communication between the stations A and B is attained by using the parameter after the revision.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile apparatus, and particularly to changing communication mode from a receiving terminal.

[Conventional technology]

Conventionally, this type of facsimile machine is capable of decoding image information that is encoded according to parameters such as density, image processing, dropout color, etc. specified by the transmitting terminal, if the receiving terminal can decode it. The receiver encodes the information according to the specified parameters and transmits the information to the receiving terminal.

[Problem to be solved by the invention]

The conventional facsimile machine described above determines and encodes the parameters associated with communication at the discretion of the sending terminal, so if the receiving terminal has unclear records, the communication from the receiving terminal may be Since there is no means to change the parameters, it is necessary for the receiving terminal to notify the transmitting terminal of the change after the communication has ended, and for the transmitting terminal to transmit again using parameters that satisfy the conditions.

[Means to solve the problem]

The facsimile device of the present invention includes a reading/recording section that converts image information of a document into an electrical signal or records the electrical signal as image information, and an encoding/decoding section that compresses/expands the obtained electrical signal. A modulation/demodulation section that modulates the digital signal obtained from the encoding/decoding section into an analog signal or demodulates the analog signal into a digital signal, and a communication network control section that performs calling operations and receiving operations for the communication network. In a facsimile machine that has an operation section that performs a man-machine interface with an operator, and a terminal control section that centrally controls each of the above sections, the receiving terminal side can request the sending terminal to change parameters associated with communication. Have the means to make a request.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an embodiment of the present invention. In the figure, two similar sets of facsimile machines with automatic call/receive functions are connected via a communication network 7. Each facsimile machine has a communication network control section LA, IB, a modulation/demodulation section 2A, 2B, an encoding/decoding section 3A, 3B, a reading/recording section 4A, 4B, an operation section 5A, 5B, and a terminal control section 6A, 6B.
It consists of

First, the calling procedure will be explained.

The dial number of the other station is notified from the terminal control unit 6A to the communication network control unit IA, and automatic dialing to the other station is performed.

Next, the incoming call procedure will be explained.

The communication network control unit IB detects the linking signal and notifies the terminal control unit 6B of the incoming call.

Transmission of procedure signals will be explained.

The procedure signal received from the communication network 7 through the communication network control section IB is notified to the terminal control section 6B through the modulation/demodulation section 2B.

FIG. 2 is a diagram for explaining a procedure for changing communication parameters from the receiving terminal side. Here, the procedure signal is in accordance with International Telegraph and Telephone Advisory Committee Recommendation T30.

When a transmitting terminal (hereinafter referred to as A station) dials a receiving terminal (hereinafter referred to as B station), the B station receives a linking signal and automatically responds. Following the called station identification, the initial identification (CE
D) After that, the non-standard device identification signal (hereinafter referred to as NSF) and the digital identification signal (hereinafter referred to as DIS), which are initial identification signals, are returned to the A-station side. here nsf
is an optional signal for identifying a specific user's request, and the parameters that can be decoded on the B station side are indicated by a specific pattern of the NSF frame.

Upon receiving this, the A station side compares the parameters specified by the operator with the NSF from the B station, and it is possible for the B station side to decode the image information encoded with the parameters specified on the A station side. After confirming the non-standard settings (hereinafter NSS)
), a digital command signal (hereinafter referred to as DO8), and a training check (hereinafter referred to as TCP) are sent to the B station. Here, NSS is an optional signal for identifying a request from a specific user, and information such as the parameters specified by the operator on the A station side and the ability to accept parameter change requests from the receiving terminal side is sent to the NSS frame. Show it in a specific pattern.

When station B receives this, it determines the error pit in the TCF, and if there is no error, it confirms reception preparation (hereinafter referred to as CFR).
) is returned to station A, and station A performs a transmission operation according to normal facsimile procedures, such as sending out an image signal (hereinafter referred to as PIX).

If the operator at station B, which is receiving the first FIX, determines that the recording is unclear, the operator inputs parameters that meet the conditions from the next page through the operation unit 5B.
It is stored that a parameter change request was made by the terminal control 6B.

Next, when station A finishes transmitting the first PIX and continues to transmit the second and subsequent PIX, the A station sends a multi-page signal (hereinafter referred to as M
PS) is sent to station B. Upon receiving this, station B receives a parameter change request, and if station A's NSS can accept a parameter change request from the receiving terminal, Instead of a message confirmation (hereinafter referred to as MCF), a retrain affirmation (hereinafter referred to as RTP) is returned to the A station.

As a result, station A retransmits the NSS and DC8% TCF, but after that, station B sends back to station A the parameter selected by the operator of the receiving terminal and the parameter change request together with DIS, which indicates the specific pattern of NSF.

Upon receiving these signals, station A determines whether or not it has the ability to encode using the parameters requested by station B.
If there is, send the NSS, DC8, and TCF according to the parameters specified by the NSF of the B station to the B station,
After receiving the CFR from the B station, PIX encoded with the changed parameters is sent to the B station, and thereafter communication between the 2A and B stations is performed using the changed parameters.

In addition, if station A does not have the ability to encode with the parameters requested by station B, the conventional NSS, DO8%TC
Sends P to station B, and after receiving CFR from station B, sends FIX encoded with the same parameters as the first one to station B. From then on, communication between stations A and B is performed using the same parameters as before. It will be done.

〔Effect of the invention〕

As explained above, in the present invention, when the operator on the receiving terminal side determines that the record of the receiving terminal is unclear, the receiving terminal side requests the transmitting terminal to change the parameters associated with communication, and Since it is possible to change the communication parameters from the next page with the consent of the terminal, this has the effect of reducing the time and number of retransmitting unclear records. Furthermore, it is also possible to use it in combination with conventional techniques.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, and FIG. 2 is a diagram showing a procedure for changing communication parameters from the receiving terminal side. IA, IB...Communication network control unit, 2A, 2B
... Modulation/demodulation section, 3A, 3B... Encoding/decoding section, 4A. 4B...reading/recording section, 5A, 5E...
・Operation unit, 6A, 6B...Terminal control unit, 7...
...Communication network, RI...Linking signal, C
ED...Called station identification, NSF'...Non-standard equipment, DIS...Digital identification signal, N
SS...Non-standard device settings, DC8...
Digital command signal, TCF...Training check, CFR...Reception preparation confirmation, FIX...
...Picture signal, MPS...Multi-page signal, IRTP...Retrain affirmation, MCF...
...Message confirmation, EOP...Procedure completed,
DCN... Line disconnection command. Agent Patent Attorney Otoma Uchihara Figure 1

Claims (1)

[Claims] A reading/recording unit that converts the image information of the original into an electrical signal or records the electrical signal as image information, an encoding/decoding unit that compresses/expands the obtained electrical signal, and an encoding/decoding unit that A modulation/demodulation unit that modulates a digital signal into an analog signal or demodulates an analog signal into a digital signal, a communication network control unit that performs calling/receiving operations on the communication network, and a man-machine interface with the operator. The facsimile apparatus has a terminal control section that centrally controls the above-mentioned parts, and a facsimile machine that has a means for requesting a sending terminal from a receiving terminal to change parameters associated with communication. facsimile machine.