JPS59163946A - Picture processing system - Google Patents

Abstract

PURPOSE:To inhibit the connection of a color image pickup device to a black- and-white printer or the connection of a black-and-white image pickup device to a color printer by discriminating a color or a monochromic inquiry command data so as to control the picture processing. CONSTITUTION:Color image pickup devices 1, 9 and a balck-and-white image pickup device 15 are connected respectively to color transmission modules 2, 10 and a black-and-white transmission module 16 via a network system 7 and the system 7 is connected to color receivers 21, 28 and a black-and-white receiver 35. A host computer 8 is inquired before the start of transmission and receiving of a picture data and the computer 8 performs system check and system set by a command signal as to whether the line is idle or not, as to the type of a receiver and as to whether or not the operation is possible. Further, the command signal sets a coefficient for correcting gamma of a color signal of picture processing sections 24, 31. Thus, the connection of the color image pickup device to the printer exclusive for color is inhibited and the connection of the balck-and-white image pickup device to the printer exclusive for color is inhibited or permitted with a condition.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image processing system, and more particularly to a system for reproducing transmitted image signals.

FIG. 1 is a system block diagram of image transmission processing. 1
, 9 is the color imaging device, ia, '1b, 10 is the color imaging device 1's OCD sensor for blue (B) color light, COD sensor for green (G) color light, and CCD for red (R) color light.
Sayy, 1o is OCD+y for B.

ia, COD set 1b for G, OCD senna 1o for Ft
Ia is a V converter N that converts the signal of the amplification processing unit 1c into φ, 1e is a controller that controls the amplification circuit 1c, and 2.10 is a force 2-transmission module. , 5.11 is a controller of the color transmission module, 4.12 is a memory for recording signals sent from the color imaging device, and 5.16 is an F sent from the memory.
A parallel-to-serial converter that converts the tGB signal from parallel to serial; 6.14 is a selector that selects the switching between image data and control data; 7 is a network that connects to the transmission module, etc.; 8 is a host that controls network 7. A computer, 15 a monochrome image pickup device, 16 a monochrome transmission module, 17 a memory for recording image data, 18 a controller for the monochrome transmission module, 20 a data selector for switching data similar to 6 and 14, 21゜2B is force 2-receiving device, 22.29
is a selector that selects the internal data of the color receiving device,
26.60 is a serial-to-parallel converter that converts the signal from the selector 22 into two serial parallel converters, and 24.51 is an RG
The B signal is processed to produce a complementary color signal yellow (Y).

Fig. 4 shows the block of the arithmetic processing unit that generates magenta (M), cyan (C) and black signals, 25.32 is a memory for storing each signal, and 26 and 53 are for receiving each color signal. Force 2 - Force to form an image on the recording material 2 - Laser beam unit N, 27 t'54 ii: Force y - Controller of the receiver, 65 is the monochrome receiver, 66 is the image and control signal selection for the monochrome receiver selector,
59 is a memory for storing black and white image data, and 40 is an LB for recording image data output from the memory 69 onto a recording material.
A P unit 41 is a controller for the monochrome receiving device. The controller 2 switches the number of threads for gamma correction in the processing section in accordance with control transmission data from a selector, such as command data for gamma correction transmitted via a line.

The host computer 8 has a register shown in FIG. 2 and a microcomputer (not shown), and controls the transmission process shown in the flowchart of FIG.

Each imager sends a digital signal with gradation weighting of 8 pF per pixel to the transmission module after l conversion.

The transmitting module is 8 each for B, G, and R for color images.
All bits, a total of 24 bits of data, are converted into serial data, and for black and white, 8 bits are converted into serial data and sent to the line. Therefore, the time required to transmit one pixel is 1/3 for black and white compared to color. Similarly, the line to the receiving device serially transmits 24 bits per pixel and 8 bits for black and white in the case of color.
Regarding the type of receiving device and the possibility of operation, the command signal'r
TC system check and system set. Also, the number of threads in the image processing section 24 is set by the command signal. This prohibits the connection of a color image pickup device to a monochrome-only printer, and prohibits or conditionally allows connection of a black-and-white image pickup device to a power 2-dedicated printer. In addition, the correction system in the γ correction process (29) to make the gradation characteristics linear in the printer's image processing unit when the Vidicon image pickup device is connected to the printer and when it is connected to the COD type image pickup device. Change to suit the machine. Therefore, even if the image pickup device is changed while using a common printer, a printed image with good gradation can be obtained.

The masking system number (50), OCR system number (thread number 1), and desamatrix 2 pattern (62) in the color image processing section 2-4 can also be switched and selected by a command signal. Here, the masking system is a calculation system for each color signal during i-sking processing, which calculates, for example, six color signals of B, G, and H to obtain one color signal of B and H, and by masking processing, υY, M.

It is possible to correct the impurity of the developer of C, so as not to impair the image quality. By changing the calculation system, the reproduced color tone can be changed. Also, the UOR system number is the ratio of the black component during the under color removal (UCJ processing) that removes the black component signal from each color signal of B to R, and the degree of inking changes depending on this.Desumer F
The density pattern is a threshold matrix pattern for reproducing halftones in a binary manner, and by changing the pattern, the target density level range in which tones are to be reproduced can be changed.

The network 7 connects and switches between the image pickup device and the printer via the host 8, and can be implemented using a well-known converter.

First, the host computer 8 is, for example, one of the transmitting modules.
When receiving an interrupt signal requesting a line from 2,
Step 1) to jump to the boot routine, step 2) to determine whether the requested line is in use, and stop the interconnection if it is in use (step 6). When not in use, the host selects the requested line, for example Z& and 7K, and sends commands to both. The host selects and connects the two, and sends commands from the transmitting module.The host then sends back data such as Nananokuro, Rikiyuki, etc. The response data is written to registers AD and BD designated by registers A and B, respectively (step 5). Registers A and B are respectively 71L and '7(1) of the transmitting module and receiver, respectively.The above response data is sent to the host via the line after the controllers of the module and receiver determine the command. It will be sent to.

Next, the data in registers AD and BD are compared (step 6). In this case, since the colors are the same, a data request command is sent to both (step 7). If it is not a color comrade, turn off the line and return to the main routine. The request command is a command that asks whether image data is already stored in the module memory, whether there is still image data left in the memory of the receiver, or whether it is currently being output. If image data is stored, a transmission enable signal is sent to the host 8.

If the reception memory 25 is empty, a reception enable signal is sent to the host 8. When the host determines that it has received enable signals from both parties (step 8), it sends a transmission start command and a reception start command to each (step 9). The system waits until the input signal is received.

The module that received the transmission start command reads R from memory.
Output C and B in <24 (5X8) bits as described above,
Serial conversion and 12-in transmission.

Selector 6 in this case connects transmission 2 in 79).

Switch from the -2 side to the Bakshiri converter side.

On the other hand, on the power 2-receiving device side, the punch roller 27 switches the selector 27 to connect the signal from the line 7 to the serial-to-parallel converter. RG in parallel by the serial-to-parallel converter 25
It is converted into a B signal. The above signal is subjected to arithmetic processing for correcting the characteristics of the output y-LBP unit 26. The aforementioned TJC uses multiplication ROM and addition ROM for high-speed processing.
Black component extraction and masking processing are performed by 3R processing.

When the color information transmission is completed, the module and the receiving device send a completion signal to the host 8, cancel the interrupt routine, and return to the main routine.

When the host F selects the line 7at7f, it sends the type command as described above and returns color data and black and white data as a response, so it does not proceed to the subsequent steps and returns to the main routine. Also, when selecting line 70 with a black and white imager and line 7f with a cutter printer,
Image transmission can be performed similarly to 7a and 7a.

70 and a color printer capable of black and white printing, that is, a controller! +4 determines black and white command data and outputs TEM-TI
-! Transmission is also possible as described above when selecting 7e and 7C connected to a printer that controls the input of image data into the BK (black) area of J. Note that the buzzer performs the process for pushing.

Further, when the γ correction command data is transmitted to the receiving section, the controller determines it and switches and selects the γ correction memo 1.

Black and white command data and γ correction command data are sent directly from the controller of the transmission module to the printer.The controller 2 determines the transmission start command from the host 8 and sends them first, and then the image data is sent at a certain time. It will continue to be transmitted. In this case, the module can receive a signal indicating that these commands have been determined by the receiving section and start transmitting the image data.

[Brief explanation of drawings]

Figure 1 is a block diagram of the image signal transmission/reception system, applicant: Canon Co., Ltd.

Claims (1)

[Claims] (1) An image processing system characterized by determining transmitted command data related to a digital image signal and controlling image processing or system processing. (2) An image processing system according to item 1, wherein the command data relates to selection of a printer type. (6) The image processing system according to item 1, wherein the command data relates to selection of characteristics of gradation reproduction in image processing. (4) The image processing system according to item 2, wherein the command data is interim data for whether color reproduction or monochrome reproduction is possible.