JPS6037873A - Facsimile transmitter - Google Patents

Abstract

PURPOSE:To attain transmission in response to the content of an original and purpose of transmission by providing a switch inhibiting transmission with reduction to a facsimile transmitter which conducts automatic reduced transmission through the detection and comparison between a size of a recording paper sheet of a receiver and the size of the original. CONSTITUTION:The picture information P1 of the original D is read by a reader 1 and fed to the 1st picture element extracting device 2 and the 2nd picture element extracting device 3. In combining the picture element signals P3b of the device 2 again, the information becomes the picture information of the same size as the original D and in combining the picture element signal P3b of the device 3 again, the information becomes the picture information where the size is reduced from B4 into A4. The size of the original D is detected by an original size detector 7 and the size of the recording paper is detected by a recording paper size confirming device 8, a device 9 changes over a switch S1. When the size of the original D is larger than the size of the recording paper, the switch S1 is changed over to the position of the device 3 so as to conduct the reduced transmission. In this case, no reduction is conducted when a reduction inhibiting switch S2 is turned on.

Description

Detailed Description of the Invention The above reduction function is extremely convenient. For example, if the original to be sent is 134 size and the recording paper of the receiver is A4 size, the image information of the B4 size original is reduced to A4 size. By reducing the size and sending it, the range of facsimile communication can be expanded. However, with this, the ratio of significant image information in the B4 size document is unconditionally reduced even if it is within A4 size, making the record obtained on the receiver side difficult to read. There is also.

The present invention aims to solve the above problem, and is equipped with the above reduction function, and also maintains the size of the original image information without reducing the original image depending on the content of the original or the purpose of transmission. The present invention provides a facsimile transmitter that can transmit data.

Embodiments of the present invention will be briefly described below with reference to the drawings.

FIG. 1 shows the main parts of a facsimile transmitter according to the present invention, in which (1) scans a document (+)) and obtains its image information (Pl).
This is a reading device that photoelectrically converts the image signal and sends it out as an analog image signal (P2). (2) is a first pixel extraction device that samples the image signal (P2) with a signal of a predetermined frequency and extracts 2048 pixels per line corresponding to the size when this transmitter is used for B4 size. . (3) is the receiver (
4) Assuming that the recording paper size is A4, the second step extracts 1728 pixels corresponding to the A4 size by sampling the image signal (P2) with a signal of a lower frequency than the above frequency. This is a pixel extraction device.

The device (3) transmits the image signal (
P2) is performed to remove every predetermined number of scanning lines one by one. Therefore, if the pixel signals (P3a) obtained from the first pixel extraction device (2) are recombined, image information of the same size as in the original document 0 can be obtained, and the second pixel extraction device (
If the pixel signals (p, a b ) of 3) are recombined, B4
Image information reduced at the ratio of the A4 size to the size is obtained. (5) is each pixel signal (P3a) (p3b
) is a transmitter that modulates and transmits the signal onto a telephone line (6) connected to a receiver (4). (7) is the manuscript (D
) is a document size detection device that detects whether the document is smaller than A4 size or thicker than A4 using a photoelectric detection switch, 7 inch or rim, tosuinochi, etc. This is a recording paper size confirmation device that confirms whether the recording paper in the receiver (4) is B4 size or A4 size based on the NO/END/AIKE exchanged between the two.

Each output of the detection device (7) and confirmation device (8) is supplied to a changeover switch control device (9) that controls a changeover switch (Sl), which will be described later. The control device (9) is constituted by a gate circuit and the like, and its output is further controlled by a switching inhibit switch (S2) to be described later. Reader (
]) is branched and input to the first and second pixel extraction devices (2) (3), respectively, and each output end of both extraction devices (2) (3) has a C contact. Configure"
It is alternately connected to the transmitting device (5) by the two-way changeover switch (Sl).

The operation of the transmitter described above will be explained next with reference to the flowchart shown in FIG.

When communication starts, the recording paper size is confirmed by a quick check with the receiver (4), and the document (D
) is detected and input to each terminal (X) (Y) of the changeover switch control circuit (9) shown in FIG. The input signal of the terminal corresponds to the recording paper size; it indicates 1 when the paper size is A4, and the input signal of the other terminals indicates 1 when the document 0 is thicker than A4 size. Both terminals (3) and (1) above are input terminals of the first ant game) (11), and
The output of (11) is input to one of the second AND gate (12) and the third AND gate (13). Second
The other input terminal of the AND gate (12) is connected to the switching prohibition switch (S2) via the input terminal (14), and the other input terminal of the third AND gate (t3) is connected to the switching inhibit switch (S2) through the input terminal (14). Prohibition switch (S2) and Inno Kuichita (
14). Therefore, only when the recording paper is A4 size and the document II) is larger than A4 size, the first (12) is turned ON only when the first ant game) (11) is ON and the switch prohibition switch (S2) is OFF. Output the command (Zl) and start the third animation) (
13) is turned ON only when the first AND gate (11,) is ON and the switching prohibition switch (S2) is ON, and outputs the pixel power/soto command (Z2). When the reduction command (Zl) is issued, the changeover switch (Sl) switches the second pixel extraction device (31
(4 concubines are connected from the transmitter (5) to the receiver (till)
4), and in other cases, it is connected to the first pixel extraction device (2) and sends unreduced image information.

When the pixel cut command (Z2) is issued, the transmitting device (5) counts 2048 pixel data for one line sent from the second pixel extracting device, and counts 1729 to 2 pixel data.
Transmission of the 048th pixel is stopped. At this time, the image information for the A44J-size width of the original ◎ is transmitted, so the sending word = J function area in such a case is indicated in advance with a mark etc. at the position where the original ◎ is set in the transmitter. In addition, it is preferable to size the front end so that the portion of the original document 0) that needs to be transmitted falls within the area.

If the document size detection device (7) is omitted in the transmitter described above, regardless of the size of document 0, if the recording paper is B4 size and the switch prohibition switch (S2) is set to OFF.
Reduction will be performed only in the case of FF.

As explained above, according to the present invention, when transmitting a large document with fine text or drawings to a receiver with a small recording paper size, the entire document can be reduced and transmitted. It is also possible to transmit only the portion of the shredded original that needs to be transmitted, or the entire original can be divided into several parts and transmitted without reducing the size, and can be used freely and conveniently depending on the situation.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the main parts of a facsimile transmitter according to the present invention, FIG. 2 is a flowchart for explaining its operation, and FIG. 3 is a circuit diagram showing the configuration of a changeover switch control circuit. (2)...First pixel extraction device (3)...Second pixel extraction device (4)...Receiver (5)...Transmission device (6)...
・Line (8)... Recording paper size confirmation device 0... Original (Pl)... Image information

Claims (1)

[Claims] A recording paper size confirmation device that confirms the size of recording paper in a receiver by handshaking with the receiver; and a first pixel that extracts a predetermined number of pixels from an image signal obtained by photoelectrically converting image information of a document. an extractor, a second pixel extractor that extracts a smaller number of pixels from the pixel signal, and modulates the pixel signal from the first or second pixel extractor and sends it onto the line. a transmitting device that connects the first or second pixel extraction device and the transmitting device according to a command from the checking device; and a switch that fixes the connection of the switching switch to one side regardless of the command from the checking device. The facsimile fuenmon is characterized by being equipped with a switching prohibition switch, which is connected to a facsimile transmitter, and has a function of reducing the image information of the original to be transmitted in accordance with the size of the recording paper of the Utatami Shinki. related to facsimile transmitters.