JPH01149669A - Facsimile transmitter - Google Patents

Abstract

PURPOSE:To prevent omission from occuring to a picture received by a receiver whose recording length has a limited value by controlling the insertion position of an addition signal to the position where a picture signal does not exist corresponding to the limitted value of the recording length being as the receiving ability of a communication party. CONSTITUTION:In course of the transmission and the reception of a communication procedure control signal based on a CCITT advice T30 prior to communication, a communication control part 4 decodes a signal informing the receiving ability sent from the receiver of the called party, recognizes the limitted value of the recording length possessed by the receiver and keeps it for a limitted time. The addition signal A is added to the inside of an original 5 to be transmitted according to the limitted value L of the recording length of the received picture 6 by a signal addition part 3 and the exclusive OR operation of the picture signal P from the original 5 and the addition signal A is executed and the addition signal A is inserted to the margin part of the original 5. Thus, a transmission signal quantity exceeding the limitted value L of the recording length can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile transmitter, and particularly to a facsimile transmitter that transmits additional information when transmitting an image signal.

[Conventional technology]

Conventionally, when this type of facsimile transmitter adds an additional signal indicating sending terminal information, the number of pages to be sent, etc. to the image signal from the transmitted document and sends it out, it is necessary to consider the receiving image size of the communication partner's receiving capability. I went without.

Therefore, even if the length of the transmitted original is the same as the recording length limit of the receiver, an additional signal with additional information whose length is sufficiently smaller than the length of the transmitted original is added in advance of the image signal obtained by reading the transmitted original. Therefore, the transmission signal amount exceeded the record length of one page of the receiver.

FIG. 3 is a schematic diagram showing the correlation between the amount of transmitted signals and received images of a conventional facsimile transmitter.

As shown in FIG. 3, an additional signal A is added before the image signal P corresponding to one page of the transmission original 5. As shown in FIG. Therefore, when the recording length limit of the receiver is equal to the length of the transmitted document, the rear part of the transmitted document cannot be recorded on the received image 6.

[Problem that the invention seeks to solve]

The above-mentioned conventional facsimile transmitter transmits a transmission signal amount exceeding the recording length limit of the communicating party to the receiver, and therefore has the disadvantage that recorded images may be missing depending on the receiver.

[Means for solving problems]

The facsimile transmitter of the present invention includes a communication control unit that recognizes a recording length limit value as a receiving capability of a communicating party by decoding a control procedure signal prior to communication, and transmitting terminal information indicating a transmitting terminal and pages of a transmitted manuscript. an additional information generation section that generates an additional signal indicating the number of the transmission document; a reading section that reads the transmission document, converts it into an electrical signal, and outputs an image signal; and a transmission section that corresponds to one page of the transmission document within the range of the recording length. and a signal adding section that inserts the additional signal into the image signal so as to have a signal amount.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

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

As shown in FIG. 1, this embodiment includes an additional information generating section 1, a reading section 2, a signal adding section 3, and a communication control section 4.

The communication control unit 4 decodes the signal notifying the reception capability from the other receiver in the process of sending and receiving communication procedure control signals in accordance with CCITT recommendation T30 prior to communication, and determines the limit value of the record length of the receiver. Recognize and store.

The additional information generating section 1 generates transmitting terminal information indicating the transmitting terminal and an additional signal P indicating the number of pages of the transmitted document in a dot pattern format, and outputs it in a time series signal format similar to a facsimile signal.

The reading unit 2 reads the transmitted original, converts it into an electrical signal, and outputs an image signal P.

The signal addition unit 3 determines the addition position of the additional signal A to the image signal P from the transmission original using the recording length limit value of the receiver recognized by the communication control unit 4, and transmits the transmission original 1.
A transmission signal corresponding to each page is generated.

The transmission signal is transmitted to the receiver through the communication control section 4. - As an example, a case will be explained in which the recording length limit value of the receiver is the same as the length of the transmitted document.

FIG. 2 is a schematic diagram showing the correlation between the amount of transmitted signals and the received image in the embodiment of FIG. 1.

As shown in FIG. 2, the additional signal A is added to the inside of the transmitted original 5 in accordance with the recording length limit of the received image 6, and the image signal P from the transmitted original 5 and the additional signal A are By performing an exclusive OR operation and generating a transmission signal by inserting the additional signal A into the margin of the transmission document 5, the amount of transmission signal can be prevented from exceeding the recording length limit value. can.

〔Effect of the invention〕

As explained above, the present invention enables reception with a recording length limit value by controlling the insertion position of an additional signal at a position where there is no image signal in accordance with the recording length limit value as a receiving capability of the communication partner. This has the effect of preventing omissions in images received by a receiver (for example, a receiver using sheet paper).

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention, and FIG. 2 is a block diagram of an embodiment of the present invention.
FIG. 3 is a schematic diagram showing the correlation between the amount of transmitted signals and received images in the embodiment shown in the figure, and FIG. 3 is a schematic diagram showing the correlation between the amount of transmitted signals and received images of a conventional facsimile transmitter. DESCRIPTION OF SYMBOLS 1... Additional information generation part 2... Reading part, 3... Signal adding part, 4... Communication control part, 5... Transmission manuscript, 6...
...Received image, A...Additional signal, L...Recording length limit value, P...Picture signal.

Claims (1)

[Claims] A communication control unit that recognizes a recording length limit value as a receiving capability of a communicating party by decoding a control procedure signal prior to communication, and generates transmitting terminal information indicating a transmitting terminal and an additional signal indicating the number of pages of a transmitted manuscript. an additional information generation section; a reading section that reads the transmitted original, converts it into an electrical signal, and outputs an image signal; a signal adding section for inserting the additional signal into the facsimile transmitter.