JPS61139161A - Transmission system of partial multigradation image data - Google Patents

Abstract

PURPOSE:To reproduce both of characters and photographs vividly when both of them exist together on an original, by designting a multigradation range of the ori- ginal to store designation data and transmitting only the designated range with multigradations on a basis of this data. CONSTITUTION:A partial transmission designation column A where a transmission inhibition part (a) of an original 1 should be entered and a multigradation transmission designation column B where a multigradation transmission part (b) are provided on an OMR card 4d having the same size as the original. Signals of parts (a) and (b) read from the card 4a are stored in an OMR data memory 7a. A discrimination control part 8a discriminates OMR data of the memory 7a sent from a main control part 3a, and a switching part 13 is controlld to the route of read data to the side of a multigradation converting part 14 when the part (b) is designated, and a transmission inhibiting signal is sent to the main control part 3a when the part (a) is designated. The switching part 13 sets normally the route of image data to the side of a binary converting part 5 and switches it to the multigra- dation converting part 14 on a basis of the command of the control part 8a.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a facsimile (hereinafter referred to as FAX) transmitting device, and particularly to a FAX transmitting device that can transmit a predetermined portion of a document in multiple gradations. It is.

In recent years, FAX communication, which uses communication lines to transmit documents, figures, etc. to remote locations, has become widespread.Fax communication is usually done by transmitting and receiving equipment between users via a switchboard and communication lines such as subscriber telephone lines. The two devices are connected to each other for document communication, and the sending side transmits the scanned image data of the original as an electrical signal, and the receiving side records it on recording paper to reproduce the document.

FAX communication devices normally transmit data in two gradations, but if a document includes a photograph or the like, a system is desired in which the document is transmitted in multiple gradations.

[Conventional technology]

Hereinafter, FIGS. 4 and 5 [al
This will be explained with reference to and (b). FIG. 4 is a block diagram showing a conventional method, and FIGS. 5(a) and (bl) are explanatory diagrams of FIG. 4.

In FIG. 4, the reading unit 2 transports the original 1 fed out from the original platen 21 using a feed roller R1, and scans the reflected light irradiated on the original 1 by a light emitting lamp 22 with an image sensor 24 via a lens 23 to create an image. It has a function of reading data as well as a function of reading the OMR card 4 based on a signal that the sensor S detects that it is an OMR card 4.

The main control unit 3 performs sequence control of transmission and reception,
It has a function to establish a pre-transmission/reception procedure with the partner station, and when the communication phase 6a of the operation display section 6 is operated, the sensor S detects OMR and the reading section 2 reads the signal read from the OMR card 4. It has a function of sending the image data to the OMR data memory 6, and, when a signal identifying a portion a not to be transmitted is sent from the identification control unit 8, a function of transmitting the image data in that range as blank. In addition, the received image data is expanded and stored in the recording section 9.
It has a function to send to.

The OMR card 4 is provided with a partial transmission designation column A in which a transmission prohibited portion a is entered.

The binary conversion unit 5 has a function of converting the read data read by the reading unit 2 into a binary value.

The operation display unit 6 includes a communication button 6a, a keyboard having operation buttons (not shown) for inputting the destination code, transmission time, etc., and a display for displaying data entered manually from the keyboard, necessary messages, etc. It is made up of.

The OMR data memory 7 is a storage means for storing the signal of the transmission prohibited portion a read from the OMR card 4.

The identification control unit 8 identifies the read data of the corresponding document 1 based on the signal stored in the OMR data memory 7 when receiving the transmission instruction, and sends a signal to the main control unit to prohibit the transmission of the read data in the mark range. It has a function to send to 3.

The recording unit 9 has a function of printing on recording paper in accordance with the received signal to create a recorded document 1a.

The transmission control unit 10 controls transmission and reception with the other station.

The modem 1) has a function of modulating and demodulating transmitted and received data.

Organization? Tll device (Network Control
Unit (hereinafter referred to as NCU) 12 has a function of controlling connection and disconnection of the circuit switching network.

With such a configuration and function, after setting the document 1 on the document table 21 and inputting the destination code, the communication phase 4
When a is operated, it is connected to the destination, and the image data of the document 1 read by the image sensor 24 in the reading unit 2 is converted into binary data in the binary conversion unit 5 and compressed in the main control unit 3. , is modulated by the modem 1) under the control of the transmission control unit 10, and sent out to the line for the receiving station via the NCU 12.

In the case of reception, the received image data is decompressed by the main control section 3 and sent to the recording section 9 to be recorded.

Normal transmission and reception is performed in this way, but if you want to send only the necessary part of the document l, mark 41i1)A on the OMR card 4 to mark the part a that is not to be sent, as shown in FIG. 5(a). Write a mark in the range, set the ○MR card 4 before reading the corresponding document 1, and press the communication button 6a.
When you press , the OMR card 4 is sent out, the sensor S detects that it is OMR, and the signal read by the reading unit 2 is stored in the OMR data memory 7.
The identification control section 8 is activated. Next, when the original 1 is read, the signals stored in the OMR data memory 7 are read out, and the identification control section 8 identifies the transmission prohibited range, during which no image data is transmitted.

Therefore, on the receiving side, as shown in FIG. 5 (bl), the untransmitted portion a becomes blank in the recorded document 1a, and only the necessary portion is recorded.

[Problem that the invention seeks to solve]

According to the conventional method described above, the image data read from document 1 is converted into binary values and sent. However, if text and photographs coexist in document 1, the contrast of the photographic portions will be strong if the document 1 is binary. It's too clear to reproduce. Therefore, if the image is sent in multiple gradations so that the photo appears clear, there is a problem in that the small text becomes invisible.

[Means for solving problems]

The present invention includes a specifying means for specifying a multi-gradation transmission range of image data, and a storage means for storing the specified data by the specifying means, and the specified range of the image data is determined based on the specified data stored in the storage means. This is a partial multi-gradation image data transmission method that transmits data in multiple gradations, and thereby the above-mentioned problems can be solved.

[Effect]

According to the present invention, the read data of the original is divided into two gradations.

Alternatively, instead of the conventional method of transmitting in either multi-gradation, specifying means 1 for specifying the multi-gradation transmission range, for example, by sending an optical mark card of the same size as the original, corresponding to the desired multi-gradation transmission range of the original. A mark is written, and before reading the original, the mark on the optical mark card is read and the read data is stored in the storage means, and the image data of the original is multi-graded based on the specified range stored in the storage means. By transmitting, text parts can be transmitted in binary format and photographic parts can be transmitted in multiple gradation levels, both of which can be recorded clearly.

〔Example〕

Hereinafter, one embodiment of the present invention will be described in Figs. 1, 2, and 3 (a).
) and (bl). FIG. 1 is a block diagram showing an embodiment according to the present invention, FIG. 2 is a flowchart 1 of FIG. FIG.

In FIG. 1, the main control unit 3a performs sequence control of transmission and reception, and has a function of establishing a pre-transmission/reception procedure with the partner station, and a function of compressing and decompressing the transmission/reception data. A mark indicating the prohibited transmission portion a written on the OMR card 4a by the reading unit 2 when the sensor S detects the OMR upon operation.

and a function to send the signal read from the multi-gradation transmission mark to the OMR data memory 7a when it is sent.

It also has a function of reading OMR data stored in the OMR data memory 7a and sending it to the identification control section 7a when reading of the original 1 is started.

The OMR card 4a is provided with a partial transmission designation field A in which a transmission prohibited part a is entered, and a multi-tone transmission designation field B in which a multi-tone transmission part is designated.

The OMR data memory 7a is a storage means for storing the signal of the transmission prohibited portion a and the signal of the multi-gradation transmission portion read from the OMR card 4a.

The identification control section 8a identifies the OMR data in the OMR data memory 7a sent from the main control section 3a, and controls the switching section 13 to change the route of the read data to the multi-gradation section when specifying a multi-gradation section. It has a function of switching to the conversion unit 14 side and sending a signal to the main control unit 3a to inhibit the transmission of read data when the transmission prohibited portion a is specified.

The switching unit 13 has a function in which the route of image data read by the reading unit 2 is normally set to the binary conversion unit 5 side, and is switched to the multi-tone conversion unit 14 based on a command from the identification control unit 8a. has.

The multi-tone conversion section 14 has a function of converting the image data sent from the switching section 13 into multi-tone data and sending it to the main control section 3a.

Since it has such a configuration and function, the case where partial multi-gradation and partial transmission prohibition are instructed and transmitted will be explained with reference to the flowchart of FIG. 2. First, as shown in FIG. Enter a mark in the range of the part a that is not to be transmitted in the partial transmission designation IA, and enter a mark in the range of the multi-tone part in the multi-tone transmission designation column B.

■Insert OMR card 4 and communicate! When you press 04a,
The OMR card 4a is sent out to the sensor S.

mark of part a that is determined to be MR and is not transmitted by the reading unit 2;
and the marks of the multi-gradation part are read and stored in the OMR data memory 7a.

When the original document 1 is read next, the read data is binarized by the binary conversion section 5, compressed by the main control section 3a, and transmitted.

(2) Eventually, the signal stored in the OMR data memory 7a is read out and the identification control unit 8a enters the non-transmission range.

and identify multi-tone transmission.

(2) While the transmission prohibited range is specified by identification, a signal is sent to the main control section 3a to prohibit the transmission of image data, and the main control section 3a does not transmit image data based on this signal.

(2) While multi-gradation transmission is specified, the switching section 13 is switched to the multi-gradation converting section 14 side to perform multi-gradation conversion on the image data, and the image data is compressed and transmitted by the main control section 3a.

Therefore, on the receiving side, as shown in Figure 3 fb), the record document 1
In addition to recording only the necessary portions of a, the multi-gradation portions of photographs and the like are clearly reproduced.

In this way, text parts can be converted into binary values and sent, and parts that require halftones, such as photographs, can be multi-tone converted and sent, so there is no need for any operations on the receiving side. Anything can be recorded clearly.

〔Effect of the invention〕

As explained above, according to the present invention, when there is a half-tone part such as a photograph in a document, it is possible to specify the multi-tone converter for only that part and send it, so the receiving side can perform the same operation. This has the effect that both text and photographic parts can be clearly recorded without the need for recording.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment according to the present invention, FIG. 2 is a flowchart of FIG. 1, FIG. 3 (al and (b) is an explanatory diagram of FIG. 1, and FIG. 4 is a block diagram showing a conventional method. Figure 5 (1) 1 and (b) are explanatory diagrams of Figure 4. In the figure, 1 is a manuscript, 1a is a recorded document, 2 is a reading section,
3.3a is the main control unit, 4.4a is the OMR card, 5 is the binary conversion unit, 6 is the operation display unit, 6a is the communication phase, and 7.7a is the OMR data memory. 8.8a is an identification control unit, 9 is a recording unit, 10 is a transmission control unit, 1) is a modem, 12 is an NCU,
13 is a switching unit, 14 is a multi-tone conversion unit, A is a partial transmission designation field, B is a multi-tone transmission designation field, and S is a sensor. ￥-2 eyes

Claims (3)

[Claims] (1) A facsimile transmission device that reads an image written on a document and transmits image data, comprising a multi-gradation transmission designating means for specifying a multi-gradation transmission range of the image data;
a storage means for storing specified data by the multi-tone transmission specifying means, and transmits the specified range of the image data in multiple tones based on the specified data stored in the storage means. Multi-gradation image data transmission method. (2) The multi-gradation transmission designation means is an optical mark card of the same size as the original document, on which a mark is written corresponding to a desired multi-gradation transmission range of the original document. Partial multi-tone image data transmission method according to scope 1. (3) The partial multi-gradation image data transmission method according to claim 1, further comprising a switching means for switching the image data to multi-gradation conversion based on the designated data.