JPH01108864A - Color picture transmission system - Google Patents

Abstract

PURPOSE:To facilitate the transmission of a color picture data accurately by sending the color picture data sequentially in the unit of pages for each color. CONSTITUTION:A personal computer 1 stores a transmission color picture data into a RAM 11 in the unit of pages for each color and the color picture data is transferred for each color in a prescribed order in the unit of pages such as red color data green color data blue color data. The color picture data of each color read from the RAM 11 is coded by a data conversion section 13 and transferred to a facsimile adaptor 3 via an interface 14 and an RS-232C code 2 according to the asyncronizing system. On the other hand, when the color picture data is transferred from the personal computer 1, the facsimile adaptor 3 stores the data to the data storage RAM sequentially in the received order. Thus, the color picture data is sent accurately and easily.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a color image transmission system, and particularly to a color image transmission system for transmitting a color image using a facsimile communication procedure.

(Prior Art) Recently, in the information society, facsimile machines have become rapidly popular due to the immediacy and reliability of information transmission.

A facsimile machine scans a document with a scanner unit to generate a white/black binary signal, compresses the binary signal without destroying the original information, modulates the signal, and transmits the signal.

On the other hand, the facsimile machine on the receiving side demodulates the transmitted signal, reproduces it, converts it into a binary signal, and records it in a plotter section.

(Problems to be Solved by the Invention) However, in such conventional color image transmission systems, black and white images were transmitted, so a transmission system for transmitting color images has not been standardized. However, it was not possible to transmit color images.

(Object of the Invention) Therefore, the present invention provides a color image data transmission method that can be transmitted using a facsimile communication procedure similar to the transmission method of black and white image data by sequentially transmitting color image data page by page for each color. The purpose of this project is to establish a method for transmitting color image data accurately and easily.

(Structure of the Invention) In order to achieve the above object, the present invention is characterized in that color image data separated into a plurality of colors is sequentially transmitted page by page for each color using a facsimile communication procedure.

Hereinafter, the present invention will be specifically explained based on examples.

1 to 4 are diagrams showing one embodiment of the present invention.

FIG. 1 is a diagram showing a facsimile communication system in which a color image created on a personal computer is transmitted through a telephone line using a facsimile adapter.

In FIG. 1, l is a personal computer,
A personal computer 1 is connected to a facsimile adapter 3 by an R3-232C cord 2. The facsimile adapter 3 is connected to a telephone line 4 and also to a telephone set 5, and the facsimile adapters 3 of each office are connected by the telephone line 4 via an intermediate exchange 6.

The personal computer 1 includes a main body 1a, an SCRT display 1b, and a keyboard 1c.
A mouse, scanner, etc. (not shown) are connected to the . Main body 1a
As shown in Fig. 2, RAM (Randoa+
Access Memory) 11, graph 47 control section 12, data conversion section 13 and R3-23
20 interface 14, etc., and the graphic control section 12 has an input section 15 such as a keyboard IC, scanner, mouse, etc., and a CRT display 1b.
An output unit 16 such as a printer or a printer is connected.

RAM II is a memory that stores color image data, and includes a red (R) data area, a green (G) data area, and a blue (B) data area, and each area stores image data of each color. The graphic control section 12 receives color image data from the input section 15, and inputs the color image data from the RAM II.
and output to the output unit 16,
The color image data stored in the RAM II can be read out and output to the output section 16, or sent to the facsimile adapter 3 via the data conversion section 13 and interface 14.
Output to. Further, the graphic control unit 12 stores color image data input via the interface 14 and the data conversion unit 13 in the RAMII, outputs it to the output unit 16, and further converts the image data stored in the RAMII into Cater exchange section 13 that performs various processing
encodes the color image data of the RAM II for each color and outputs it to the facsimile adapter 3 via the interface 14, and also decodes the coded color image data input via the interface 14 and outputs it to the graphic control section 12. do.

At the time of transmission, the personal computer 1 converts the color image data stored in the RAM II into red (R) data and green (G) data under the control of the graphic control unit 12.
After reading each page in the order of data and blue (B) data and encoding it in the data converter 13, 1. R3-232
The data is transferred to the facsimile adapter 3 via the G code 2 in an asynchronous manner.

On the other hand, the facsimile adapter 3 has a CPU (Central Processing) as shown in FIG.
Unit) 21, data storage RAM 22, R3-2
32C interface 23, ROM (Read
0nly Memory) 24, buffer RAM 25,
Modem 26 and NCU (NetworkCont
rol Unit) 27, R3-232C
The interface 23 for the personal computer 1
R3-232C cord 2 connected to is connected. The data storage RAM 22 stores the image data transferred from the personal computer l via the interface 23 and the image data sent via the NCU 27 in the order of reception, and the ROM 24 controls the processing as the facsimile adapter 3. It stores programs and a control program for transmitting and receiving color image data of the present invention.

Modem 26 modulates transmitted data and demodulates received data. The NCU 27 sends out a calling signal for network control, inverts the polarity of the line, and detects the calling signal. C
The PU 21 controls each part according to the program in the ROM 24 and executes the sequence as the facsimile adapter 3.

Next, the effect will be explained.

The present invention attempts to transmit color image data using a facsimile communication procedure similar to that used for transmitting white/black data, and in this embodiment, the color image data transferred from the personal computer 1 is sent to the facsimile adapter 3.
The data is sent to the personal computer 1 via the destination facsimile adapter 3.

That is, the personal computer 1 stores color image data for transmission in RAM II in page units for each color, and at the time of transmission, outputs a transmission request to the facsimile adapter 3 and then transfers the color image data in the RAM II to the facsimile adapter 3. do.

This color image data is transferred in a predetermined order for each color, page by page, for example, in the order of red (R) data → green (G) data → blue (B) data, and the color image of each color read from RAMII. Data is data converter 13
After being encoded, the data is asynchronously transferred to the facsimile adapter 3 via the interface 14 and the R5-232C code 2.

On the other hand, when the facsimile adapter 3 receives the transmission request from the personal computer 1, it prepares for transmission and receives color image data from the personal computer 1. When color image data is transferred from the personal computer 1, the facsimile adapter 3 sequentially stores it in the data storage RAM 22 in the order in which it is received.

Therefore, in the data storage RAM 22, first page red (R) data → green (G") data → blue (B) data → second page red (R) data - green (G) data → blue (B) Data is stored in the order of... All color image data is received and the data storage RA
Once accumulated in M22, the CPU 21 outputs a call instruction to the NCU 27 and starts transmission.

That is, the facsimile adapter 3 sends a calling tone to the other party's facsimile adapter 3 (called station) to make a call, and when the other party's facsimile adapter 3 receives the calling tone, it connects the line and then calls the other party's facsimile adapter 3 (called station) as shown in FIG. , CED (Called Station Identification) signals and N5F (Non-standard Feature Identification) signals. When the calling facsimile adapter 3 receives the CED signal and the NSF signal, it determines whether the other party's facsimile adapter 3 is capable of receiving color image data based on the NSF signal, and if possible, sends the NSS signal.
(Non-standard function setting) Sends signals and sets communication conditions,
Here, set the transmission of color image data. The calling side facsimile adapter 3 further sends out a TCF () training check signal to confirm the training of the modem 26.

The facsimile adapter 3 on the called side receives the NSS signal and the TCF signal, and when the reception preparation is completed, it sends out a CFR (reception readiness confirmation) signal.Based on this CFR signal, the calling side facsimile adapter 3 first After transmitting one page of red (R) data, a MOS (multipage) signal is transmitted.

This red (R) data is sent to the RAM for data storage.
The red (R) data of the first page of the color image data stored in the buffer R is read out line by line.
Once stored in AM25, modem 26 and NCU2
Send via 7.

The called side facsimile adapter 3 temporarily stores the transmitted red (R) data in the buffer RAM 25 via the NCU 27 and the modem 26, and then stores it in the data storage RAM 2.
2, and when the reception of one page is completed and the MPS signal is received, an MCF (message confirmation) signal is sent out.

When the calling side facsimile adapter 3 receives the MCF signal, it transmits one page of green (G) data, and when it completes transmitting one page of green (G) data, it transmits an MPS signal. Thereafter, the MCF signal is transmitted from the facsimile adapter 3 on the called side in the same manner as described above, and when the facsimile adapter 3 on the calling side receives the MCF signal, it then sends out one page of blue (B) data. When the transmission of one page of blue (B) data is completed and there is a next page, the calling side facsimile adapter 3 sends the MP
S signal is sent, and the called side facsimile adapter 3 sends an M signal.
When the CF signal is sent, the second page turns red (R).
Send data. Through this procedure, all the colors stored in the data storage RAM 22! When the transmission of the image data is completed, the calling side facsimile adapter 3
(Procedure end) signal is sent, and the facsimile adapter 3 on the called side sends an MC,I signal. - Upon receiving the MCF signal from the called facsimile adapter 3, the calling facsimile adapter 3 sends a DCN (disconnect command) signal and terminates the call.

In this way, color image data can be transmitted using the same facsimile communication procedure as white/black data, and color image data can be transmitted accurately and easily.

What is different from white/black data transmission is the NSF signal and NSS signal.
The first step is to check whether color image data can be transmitted and received based on the signal, and to recognize that color image data is being transmitted and received.

The reason why color image data can be transmitted using the same procedure as the white/black data is that the color image data is sequentially transmitted one page at a time for each color.

In the above embodiment, the color image data is transmitted as red (R) data on the first page → green (G) data → blue (B) data = red (R) data on the second page, etc. However, the present invention is not limited to this. For example, the data may be transmitted in the following order: red (R) data for all pages - green (G) data for all pages -> blue (B) data for all pages.

Further, in the above embodiment, a case was described in which a facsimile adapter was used, but it goes without saying that the present invention is not limited to this.

(Effects) According to the present invention, color image data can be transmitted using a facsimile communication procedure similar to the transmission method of black and white image data, and color image data can be transmitted accurately and easily. can.

[Brief explanation of the drawing]

1 to 4 are diagrams showing an embodiment of the color image transmission method of the present invention, FIG. 1 is a diagram showing a facsimile communication system to which the color image transmission method is applied, and FIG. 2 is a diagram showing the facsimile communication system to which the color image transmission method is applied. FIG. 3 is a circuit block diagram of a personal computer used in the communication system, FIG. 3 is a circuit block diagram of a facsimile adapter used in the facsimile communication system, and FIG. 4 is a time chart showing the transmission procedure of the color image transmission method. It is. 1...Personal computer, 2...
・R3-232G code, 3...Facsimile adapter, -4...Telephone line, 5...Telephone, 6...Switchboard, 21... ...CPU. 22...RAM for data storage. 23...Interface, 24...ROM. 25...Buffer RAM. 26...Modem, 27...NCU.

Claims (1)

[Claims] A color image transmission method characterized in that color image data separated into a plurality of colors is sequentially transmitted page by page for each color using a facsimile communication procedure.