JPS60146576A - Facsimile transmission method - Google Patents

Abstract

PURPOSE:To control the processing contents of picture information at every line by adding a controlling MH code for showing the contents of picture information of its line, to the head of a picture signal of every line. CONSTITUTION:When an operator inputs a read instruction from an operation display part 8, and turns on a start key after inputting a telephone number of the other station, a system control part 7 informs the received telephone number to a network control part NCU6, and the NCU6 calls the other station and secures a transmission line. In this state, at the state of a confirmation of a terminal function, which is executed before transmitting picture information, it is informed to the other station that a black run-length code for a control is added to the head of one line. Also, it is instructed that the black run-length code is added to an encoding/decoding part DCR4 whenever output data of a scanner 1 are accumulated by one line portion in a buffer, and the other station discriminates the black run-length code of the head of said each line, and decides a recording method of a picture signal following said code.

Description

[Detailed description of the invention] [Technical field] The present invention relates to a facsimile transmission system.

[Prior Art] In recent years, with the diversification of facsimile machines, facsimile machines have become equipped with many useful image processing functions, such as high-resolution reading (main scanning resolution of 16 dots/+m+), halftone reading, and color reading. The device is in practical use.

Therefore, effective image transmission is possible by utilizing such an image processing function and selecting an image processing method for a single document in accordance with the detailed contents of the transmitted document.

For example, if you scan fine parts such as paintings in the image of the sent document at high resolution, and read relatively coarse parts such as text at normal resolution (8 dots/eaves), the entire image will be scanned at high resolution. The transmission time can be shorter than when reading at high resolution, and the image of the button area can be more clearly represented than when reading the entire image at normal resolution.

However, the transmission of image information using a facsimile machine is
Since the image processing method is carried out for each document to be transmitted, it is possible to change the image processing method for each document, but the flexible image transmission as described above is not possible.

[Purpose] The present invention has been made to solve the above-mentioned drawbacks of the prior art, and is achieved by adding a control MH code indicating the content of the image information of that line to the beginning of the image signal of each line. An object of the present invention is to provide a facsimile transmission system in which the processing contents of image information can be controlled line by line.

[Configuration] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the present invention, image information for one line is transmitted in the following format.

EOL+Rbc+Rw 1 +Rb 1 +--+Rt
yn+Rbn+ (fill pit), that is, a signal EOL forming a line synchronization signal, a control MH code Rbc, and a ruby bit 1 to encode the image signal of this line.

This control MH code Rbc is a black run length code that indicates what kind of image processing the subsequent image signal was obtained. For example, a black run length code of run length 3 is a black run length code that indicates "monochrome image". The black run length code for run length 2 is [monochrome image].

The black run length code of run length 1 is associated in advance so that it indicates that the resolution in the main scanning direction is 16 dots/IIall, and that the black run length code of run length 1 indicates that it is a red color signal.

By doing so, the image processing method can be changed for each line, so that efficient image transmission can be realized.

Note that the control MH code described above may be a white run length code, or may be a set of one or more white run length codes and black run length codes. Further, the contents of the hail are not limited to those described above, and may be more complex.

The figure illustrates a facsimile machine according to an embodiment of the invention.

In the figure, 1 is a scanner that can read with a resolution of 16 dots InI+, 2 is a printer that can record with a resolution of 16 dots/111n, 3 is a buffer that temporarily stores the data read by scanner 1 and the recorded data of printer 2, and 4
an encoding/decoding unit (DCR) that compresses the image signal into a code and restores the encoded image signal to the original data;
5 is a modem that modulates and demodulates image information and transmission control signals; 6;
is the network control unit (N) that controls the connection between the transmission line network and the main unit.
CU), 7 is scanner 1. Printer 2゜Buffer 3. D
A system control section 8 controls the CR 4, modem 5, and NCU 6, respectively, and an operation display section 8 interfaces the operator with the system control section 7.

With the above configuration, a case will be described in which, for example, the upper half of the document has a drawing and the lower half has explanatory text, and the drawing part is read at high resolution.

The operator inputs the boundary position between the drawing and the text and instructions to read the drawing part at 16 dots/nm++ and the text part at 8 dots/nw11 from the operation display section 8, and then enters the telephone number of the other station. After inputting the information, turn on the start key (not shown).

As a result, the system control unit 7 inputs the received telephone number to
CU6 is notified, and NC[J6 calls the partner station to establish a transmission line.

Then, at the terminal function confirmation stage performed before transmitting image information, the other station (axis shown) is notified that a black run length code for control will be added to the beginning of one line. In addition,
The partner station is also configured similarly to the illustrated device.

At the stage of transmitting image information, the system control unit 7 reads the image from the beginning of the JM manuscript to the designated boundary position at 16 dots/1ml, and reads the image from the boundary position to the rear edge of the document at 8 dots/ml. An instruction is sent to the scanner 1 to read at 1lIn. Note that at this time, instructions may be sent for each line.

Then, when reading the part up to the boundary position, instruct 0CR4 to add a black run length code of run length 2 to the beginning every time one line of output data from scanner 1 is accumulated in the buffer. , when reading past the boundary position.

Every time one line of output data from the scanner 1 is accumulated in the eight-folder, the OCR 4 is instructed to add a black run length code of run length 3 to the beginning.

As a result, a black run-length code of run length 2 is added to the beginning of each line of image information obtained by reading a portion of one drawing, and a black run-length code of run length 2 is added to the beginning of each line of image information obtained by reading a portion of a drawing. A black run length code with a run length of 3 is added to the beginning and transmitted to the other station.

On the other hand, the other station is notified in advance that a control black run length code will be added to the beginning of each line before the image information is transmitted, so the black run length at the beginning of each line of the received image information is The code is identified and the recording method of the subsequent image signal is determined.

In this case, the control black run length code for the portion from the beginning to the boundary position is the black run length code of run length 2 as described above, and therefore the system control unit operates the printer in the 16 dot/field mode. . Then, since the control black run length code for the portion after the boundary position is a black run length code of run length 3, the system control unit operates the printer in the 8 dots till mode. Note that such recording control is, in principle, performed for each line.

In this way, the image of the drawing located in the upper half of the document is transmitted at 16 dots/+nm, and the image of the text portion located in the lower half is transmitted at 8 dots/n1Ill.

Note that the type of image processing, the association with the black run length code, etc. are limited to the above-described three embodiments and can be set as appropriate.

[Effects] As explained above, according to the present invention, since the control code 111 is added to the beginning of each line of image information, image processing can be appropriately changed within one transmitted document. As a result, there is an advantage that image transmission can be performed efficiently. Further, since the G111 code is used as a control signal, a conventional device can be used.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a facsimile machine according to an embodiment of the present invention. 1... Scanner, 2... Printer, 3... Buffer, 4... Encoder/Decoder (OCR), 5... Modem. 6...Network control unit (NCU), 7...System control unit. 8...Operation display section. Agent Patent Attorney Crest 1) Extinct ゛) , -・' Proceedings ■Author (spontaneous) February 21, 1980 Mr. Commissioner of the Japan Patent Office 1 Indication of the case 1982 Patent Application No. 2065 2 Invention Name Facsimile Transmission Method 3, Relationship with the Amendment Person Case Patent Applicant Address 1-3-6 Nakamagome, Ota-ku, Tokyo Name (67)
4) Ricoh Co., Ltd. Representative: Hama 1) Hiro 4, Agent Address: 1-18-11 Nishi-Shinbashi, Minato-ku, Tokyo 6. Contents of amendment (1) The scope of claims on page 1 of the specification will be corrected as shown in the attached sheet. (2) In the same book, page 3, line 9, "control hole" is corrected to "control." (3) In line 16 of the same page of the same book, ``In the present invention, the image information for one line'' is changed to ``In the present invention, before the image information for one line, the processing contents of the image information of the line are controlled.'' For this controllability Σ, the old 1 code, which is widely used for redundancy compression of both signals, can be used. Therefore, the image information for one line in this case is ” is corrected. (4) On page 4, line 20 of the same book, “In addition to the above,
It may be even more complex. '' is not limited to a double string of ``'', and may be more complicated, for example, by changing the image processing method to P1-η1 in one line. ” is corrected. (5) Insert the following sentence between lines 12 and 13 on page 8 of the same book. "By the way, in the embodiment described above, the control code is t11
1 code is used, but it is not limited to this. For example, IR code, READ code, C0DIC code, SAC
Other codes for image information compression, such as codes and CLAT codes, can be used. (6) Same book, same page No. 18
In lines 20 to 20, "Also, the conventional device can be used to use the Ml (code) as a control signal." is deleted. In the facsimile transmission method for transmitting image information, a jpH-code corresponding to the processing content of the image information of the line is placed at the beginning of one line of image information.
and a discriminating means for discriminating J2-J2-J1-Month Betting, and determining that a "2-2 control code is added to the beginning of image information of a line" in a step before transmitting image information. A facsimile transmission method characterized by a declaration. (2) 4. r Revised Claim 1: 1'
A facsimile transmission system characterized in that the ni control code is formed from a small number of sets of a white run length code J3 and a black run length code. (3) In claim 1, l'jl
+! j! A facsimile transmission system characterized in that the control code consists of one white run length code or one black run length code. ”

Claims (1)

[Claims] (1) In a facsimile transmission system that transmits code-compressed image information, a signal that adds a control MH code corresponding to the processing content of the image information of that line to the beginning of one line of image information. The present invention is characterized in that it comprises an adding means and a determining means for determining the control MH code, and declares that the control MH code is added to the beginning of one line of image information in a procedure before image information transmission. Facsimile transmission method. (2. The facsimile transmission method according to claim 1, wherein the control Ml+ code is composed of at least one set of a white run length code and a black run length code. (3) Claims 2. The facsimile transmission system according to item 1, wherein the control MH code is comprised of one white run length code or one black run length code.