JPH03174877A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To provide communication performance of even a color facsimile equipment with an existing facsimile equipment by storing color picture information in the unit of red, green and blue planes, sending green picture information at the transmission and sending red and blue picture information to a transmission opposite equipment. CONSTITUTION:A picture data decomposed into red, green and blue colors is separately stored in video memories 105-107. When a line control unit (CCU) 111 dials a transmission opposite party dial number and starts communication with a destination with a facsimile communication protocol, negotiation is implemented to receive a function of an opposite equipment to send green picture information. Then whether or not the opposite equipment is a color facsimile equipment is discriminated and when the opposite equipment is a color equipment, the remaining red and blue color information is sent and then transmission of pictures by one page is finished, or when the transmission is not required, the transmission by one page is finished. Thus, even when the facsimile equipment is a color facsimile equipment, the communication performance with an existing black/white facsimile equipment is obtained.

Description

[Detailed description of the invention]

[Industrial Field of Application] The present invention relates to a facsimile device capable of communicating color image information. [Prior Art] Conventionally, facsimile machines have G2. G3. There are devices such as G4, and communication of only black and white images is standardized. In addition, in recent years, various facsimile devices that can communicate color image information have been proposed, but in these cases,
There is no international standard, and it is configured to communicate in a proprietary mode. [Problems to be Solved by the Inventionj] However, the above conventional facsimile machines that can communicate color image information have different standards from existing black and white facsimile machines, so they do not have mutual communication capability, and it is difficult to obtain mutual communication capability. A facsimile machine that combines both functions requires the following configuration. (1) Monochrome image data is obtained by providing a black-and-white sensor in addition to red, green, and blue sensors in the document reading section, and further providing a black-and-white storage area in the image memory. (2) Or obtain monochrome image data from red, green, and blue image data by image processing. Either (1) or (2) has drawbacks such as increased cost of the device and poor operability. [Means and effects for solving the problems] In order to solve the above-mentioned problems and achieve the objects, the facsimile device of the present invention is a facsimile device capable of communicating color image information. an image memory means for storing image information for each side of green and blue; a transmitting means for transmitting the green image information at the time of transmission; and a transmitting means for transmitting the red and blue image information according to the destination device. This device was equipped with the following and was designed to enable communication with existing black-and-white facsimiles by means of a device that executes such transmission procedures. [Embodiment] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. Note that, prior to explaining the embodiments, the present invention will be explained in detail. FIG. 1 is a diagram showing the imaging characteristics of an optical sensor using R, G, B (red, green, blue) filters. On the other hand, FIG. 2 is a drawing showing the standard luminous efficiency that humans perceive as light. It can be seen from FIGS. 1 and 2 that the visibility of the human eye is centered on G (green). Therefore, since the visual sensitivity of the human eye is almost the same as the image data read with the G (green) filter, the image can be reproduced on the receiving side even if only the image data read with the G (green) filter is sent. Become. FIG. 3 is a block diagram showing the configuration of an embodiment of the present invention based on the imaging characteristics of the three primary colors of R, G, and B and standard luminous efficiency. In the figure, reference numeral 101 denotes a scanner for reading a document and a printer for printing, and inputs and outputs images using RGB digital image signals. 102 is scanner/printer 1
A scanner/printer interface (hereinafter referred to as SC/PRi/f) interfaces image signals and control signals with the scanner/printer 101 and receives commands from the CPU 109, which will be described later, to operate the scanner/printer 101. Reference numeral 103 denotes a video interface (hereinafter referred to as video interface) that processes image signals from the S C/PRi/f 102. 104 is video memory 1
This is a memory controller that controls addresses of 05, 106, and 107 and receives address instructions from the CPU 109. Video memories 105, 106, and 107 store red, green, and blue image data on a plane-by-plane basis, respectively. 108 is equipped with a keyboard, LCD display, etc., and a CPU
This is an operation panel connected to 109. 109 is a processing procedure (program) shown in FIG. 4, for example.
It has a built-in ROM, etc., and controls the entire device.
It is PU. 110 encodes the image data from the video I/F 103, and stores the compressed image in each video memory 105/1.
This is the codec to be passed to 06/107. A line control unit (CCLI) 111 controls the line and transmits image data according to facsimile communication procedures. 113 is a video bus having three colors of image data [R-G-B], and 114 is a main bus under the control of the CPU 109. 115 is an S C/PRi/f bus with image signals RGB and control signals serial i/f for interfacing with the scanner/printer 101; Further, 116 is a line connected to CCUll. Next, an outline of the operation of the embodiment shown in FIG. 3 is shown in FIG. 4 and will be explained. First, in step Sl, when the operator presses the memory button on the operation panel 108, the CPU 109 inputs a signal from the operation panel 108, and in the following step S2, the S C/P Ri
/f Instructs 102 to read mode. In the next step S3, an image processing mode is instructed to the video I/F 103, and an encoding mode is instructed to the codec 110 in step S4. Then, in step S5, the memory controller 104
Indicates the address of the video memory transmission area. When image input and storage preparation are completed through the above processing, in the next step S6, SC/P Ri /
Instruct f l O2 to perform a scan operation, and then proceed to step S.
7, a red image is input and stored in the video memory 105. In addition, similar processing is performed in steps 88 to Sll,
Green and blue images are input to each video memory 106, 107.
Accumulate in. When this accumulation is completed, the next step S1
Proceed to step 2, LCD of operation panel 108
Displays the completion of accumulation on the display. Next, in step 313, it is determined whether there are any other documents to be stored. This determination is made when the memory button on the operation panel 108 is pressed, and it is determined that there is a document to be stored, the process returns to step S1 described above, and the same process is executed. Note that the determination in step S13 is that SC/PRi/
It is also possible to check whether there is a document to be stored in the scanner 101 via f102 and make a determination based on the result. However, once all manuscripts have been input, the process advances to the next step S14 and waits for the operator to input the dial number of the transmission destination from the keyboard on the operation panel 108. When the input of the dial number is completed, the process advances to the subsequent step S15, and an activation command to start communication is issued to the CCUll. With this instruction, CCUll
calls the dial number of the destination and starts communication with the destination using facsimile communication procedures. In the next step S16, negotiation is performed to receive the functions of the other party's machine, and in step S17, green image information is transmitted according to the facsimile communication procedure. Then, in step 318, it is determined whether the other party's machine is a color facsimile machine, and if it is a color facsimile machine, steps SL9 to S2
2, the red image is transmitted from the video memory 105, and the blue image is similarly transmitted. However, step S
If the result in step S18 is No, that is, if the other party's device is a monochrome device, the process proceeds to step S23 without performing the process of transmitting the red and blue images. In step 323, each video memory 105, 106,
It is determined whether the images stored in 107 have been transmitted, and if there are any remaining images, the processing from step S16 onwards is repeated. However, if the transmission has been completed, the process proceeds to step S24 and is transmitted via CCUll. Sends a termination notification to the other party and ends the transmission operation. Next, the flow of image data will be explained below with reference to FIG. First, the image information of the document read by the scanner 101 is
It is separated into red (R), green (G), and blue (B). The codec 110 encodes and compresses images for each color, and stores each color in red (
R), green (G), and blue (B) compressed images in preparation for transmission operation. In CCUI 1, green (G) is first sent, and then, if the other party's device is a color device, line data is subsequently added to the red (R) and blue (B) compressed images, and the data is transmitted in chronological order. [Other Examples] As another example, the following points can be considered for each component. Regarding the images stored in the video memory, l) As shown in FIG. 6, configure the image data to be stored as raw images. 2) The video memory can be composed of semiconductor memory, magnetic disk memory, etc. About the codec encoding method. 3) In addition to existing encoding methods such as MH%MR and MMR, a unique mode high efficiency encoding method can also be used.

【Effect of the invention】

As explained above, according to the present invention, image data separated into red, green, and blue is stored separately in the video memory, and the green image data is transmitted at the time of transmission, and the remaining red, green, and The transmission of one page is completed by transmitting the blue color, or if it is not necessary, the transmission of one page is completed as it is, so the next effect is provided. 1) Even if it is a color facsimile, it can communicate with existing facsimiles. 2) Scanner Some scanners only require three reading sensors: red, green, and blue; a separate black and white reading sensor is not required. 3) In image processing, there is no need to create a black and white image from red, green, and blue image data, so less hardware is required. 4) There is no need to provide a separate monochrome image storage area in the video memory, and the memory hardware can be reduced. 5) The cost of the device can be reduced by 2) to 4) above.

[Brief explanation of the drawing]

Figure 1 is a diagram showing the imaging characteristics of an optical sensor using R, G, and B filters. Figure 2 is a diagram showing the standard relative luminous efficiency that humans perceive as light. Figure 3 is a block diagram of a device implementing the present invention. Figure, Figure 4 (
a) and (b) are operation flowcharts of the device implementing this embodiment, FIG. 5 is a schematic diagram of image data of the device implementing the present invention, and FIG. 6 is a diagram of another embodiment of the device implementing the present invention. It is a schematic diagram of image data. patent

Claims (1)

[Scope of Claims] A facsimile device capable of communicating color image information, comprising an image memory means for storing the color image information in units of red, green, and blue sides, and transmitting the green image information at the time of transmission. A facsimile apparatus comprising: a transmitting means; and a transmitting means for transmitting each of the red and blue image information according to a destination machine.