JP2000197040A - Method for removing faults in electronic deciding device of color correspondence - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic deciding device with high fault resistance property. SOLUTION: A signal converting circuit 20 consisting of a change-over switch 21, a multiplication processing circuit 22 and an addition processing circuit 23 is arranged in on optional part between a color slit camera 1 and analog processing systems 21 to 23, between the analog processing systems and A/D conversion circuits 31 to 33, between the A/D conversion circuits and memories 41 to 43, between the memories and D/A conversion circuits 51 to 53, between the D/A conversion circuits and the analog processing systems 61 to 63 and between the analog processing systems and a color CRT 7. Then chrominance signals in normal circuits are converted into luminance signals and displayed in color CRT 7 as a black and white image. Moreover, a matrix circuit is arranged in place of a change-over switch 2 constituting the circuit 20 and the chrominance signals with a high importance degree are inputted to normal circuits, so that the recognition degree of the outputted white and black signal can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to public sports (horse racing,
The present invention relates to a color-compatible electronic determination device that determines the victory or defeat (such as the order of arrival and required time) of a competition object in a boat race or the like.

[0002]

2. Description of the Related Art A color-compatible electronic judgment device according to the prior art.
FIG. 4 shows a circuit configuration of a signal processing circuit in the device. Kara
-The video signal captured by the slit camera 101 is
The signal is divided into R, G, and B signals and input to the signal processing circuit.
The signal processing circuit is composed of three systems of R, G, and B,
Analog processing system (buffer amplifier, clamp, filter
Processing system) 102₁~ 102₃, A / D conversion circuit 1
03₁~ 103₃, Memory 104₁~ 104₃, D / A
Conversion circuit 105₁~ 105₃And analog processing system
Processing system composed of filters and drivers) 106 ₁~ 106₃
It is constituted by. Processing in the signal processing circuit
The processed signal is supplied to the analog processing system 106₁~ 106 ₃From
Input to the color CRT 107 as R, G, B signals,
Is displayed as an error image. Also, the image capture clock
The raw circuit 108 has an A / D conversion with the color slit camera 101.
Conversion circuit 103₁~ 103₃Is synchronized with the image
The display clock generation circuit 110 has a color CRT 107 and a D
/ A conversion circuit 105₁~ 105₃Is synchronized.
The arbitration circuit 109 controls the clock of the image capture clock generation circuit 108.
Lock and clock from the image display clock generation circuit 110
Enter the memory₁~ 104₃Or lead
Is a circuit for mediating lights.

[0003]

A color-compatible electronic judgment device is required to be highly fault-tolerant, and it is desired that a judgment image as clear as possible can be obtained even with a minor failure. In a color-compatible electronic judgment device, R, G,
When a failure occurs in one color signal or the signal processing circuit of the B signal, the image differs from a normal signal image.
Images with biased colors were being output. For this reason, it was not only difficult to judge the competition object, but also it could not be used as a publicly disclosed photograph and video.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the drawbacks of the prior art, and is intended to be used when a color CRT image is output with an image having a different shade from a normal color image. A signal conversion circuit for converting a color signal in a normal circuit into a luminance signal and outputting a black-and-white signal between a color slit camera, each component constituting a signal processing circuit, and a color CRT; A black-and-white signal based on the luminance signal from which is removed is displayed on a color CRT.

Further, a signal conversion circuit is provided for inputting a signal of high importance among the R, G, and B color signals input from the color slit camera to a signal processing circuit having no obstruction and converting the signal into a luminance signal. It is also possible to make the determination easily with a black and white signal.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a circuit configuration of a first embodiment of the present invention. R, G, and B signals from a color slit camera 1 are respectively input to signal processing circuits of three systems, and analog processing is performed. system (buffer amplifier, clamp, processing system consisting of _filter) 2 1 to 2
_3, A / D conversion circuit ₃ 1 to 3 _3, is a signal processing in the memory ₄₁ to ₃ and the D / A converter ₅ 1 to 5 _3.
R output from the D / A converter ₅ 1 _{~5 3,} G, B signals, the changeover switch 21, the multiplication processing circuit 22, and input to the signal conversion circuit 20 of the summing circuit 23, the color signal of the fault circuit The color signal of the removed normal circuit is converted into a luminance signal.

A luminance signal Y is used to obtain a monochrome signal corresponding to R, G, B color signals. Y = 0.59G + 0.3R + 0.11B (1) When the luminance Y corresponding to various colors is obtained using the constants of R, G, and B in the equation (1), Table 1 is obtained.

[0008]

[Table 1]

One or two of the three signal processing circuits
FIG. 3 shows details of the signal conversion circuit 20 that converts a signal in a normal signal processing circuit into a luminance signal when a failure occurs in the signal processing circuit of the system. 3 (1) to 3 (3) show a signal conversion method of the signal conversion circuit 20 when there is an abnormality in one system signal or its processing circuit. FIG. 3 (4) to FIG.

Only the signal of the normal circuit is input to the multiplying circuit 22 by the changeover switch 21, multiplication is performed by obtaining the multiplication coefficient shown in the equation (2), and further, the luminance signal is added by the addition processing circuit 23. Ask. Multiplication coefficient = 1 ÷ (R + G + B) (2) R, G, and B in the above equation are calculated using the constants in the equation (1), and the constant of the abnormal part is set to 0.

[0011] The output signal from the signal conversion circuit 20, the analog processing system (filtering and processing system from the driver) 6 ₁
Is processed in 6 _3, is displayed as a black and white image is input to the color CRT 7.

FIG. 2 is a block diagram showing a circuit configuration of a second embodiment according to the present invention. The signal conversion circuit 31 includes a matrix circuit 32, a multiplication processing circuit 33, and an addition processing circuit 3.
4 is the same as that of the first embodiment except for the configuration of the first embodiment.

If the importance of each of the R, G, and B colors is different, a switching circuit is provided so that a color signal with a high importance can be input to a normal circuit without any trouble. The rate can be increased, for which a matrix circuit 32 is provided. Table 2 shows the multiplication coefficient when one signal processing system has a failure, and Table 3 shows the multiplication coefficient when two signal processing systems have a failure.
Shown in It can be seen that the multiplication coefficient changes greatly by changing the importance.

[0014]

[Table 2]

[0015]

[Table 3]

[0016]

According to the present invention, an input color signal is converted into a luminance signal, and a monochrome image is displayed on a color CRT as a monochrome signal. When the surroundings are dark, a highly sensitive black-and-white camera is used, so that the user is accustomed to the judgment using the black-and-white output, and the judgment of the competition object becomes easy. Also,
When the importance of each of the R, G, and B colors is different, if the signal inherent in the failed circuit is important, switching to another normal circuit facilitates the determination with the monochrome signal. It can be carried out.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a circuit configuration of a first embodiment according to the present invention.

FIG. 2 is a block diagram showing a circuit configuration of a second embodiment according to the present invention.

FIG. 3 is a detailed explanatory diagram of a signal conversion circuit.

FIG. 4 is a block diagram showing a circuit configuration of a conventional signal processing circuit.

[Explanation of symbols]

1 Color slit camera 2 ₁ to 2 ₃ analog processing system 3 ₁ to 3 ₃ A / D converter circuit ₄₁ to ₃ memory 5 ₁ to 5 ₃ D / A conversion circuit ₆₁ through ₃ analog processing system 7 color CRT 20 , 31 Signal conversion circuit 21 Changeover switch 22, 23 Multiplication processing circuit 23, 24 Addition processing circuit 32 Matrix circuit

Continuation of the front page (72) Inventor Toshio Nakajima 1-9-9 Motohongo-cho, Hachioji-shi, Tokyo F-term in Chuo Denshi Co., Ltd. (reference) 5C054 CC00 EA01 EB05 ED09 EE07 FA01 FB01 FB03 HA06 5C066 AA01 BA01 CA27 DD07 DD08 EA23 EC12 EE01 GA01 GA05 JA02 KB05 KE02 KE03 KE19 KE20 KG01 KM01 KM05 KM12 5J022 AA01 AB01 CA07 CD02

Claims (2)

[Claims] 1. A signal in a color-compatible electronic determination device for simultaneously processing three video signals input from a color slit camera and input to a signal processing circuit including three R, G, and B systems and displaying the same as a color image on a color CRT. In the processing method, when the occurrence of a failure in one or two signal processing circuits in the signal processing circuit is recognized, the color slit camera is connected to each of the components constituting the three signal processing circuits and the color CRT. A signal conversion circuit for converting only the color signal in the normal circuit into a luminance signal and outputting a black and white signal is provided therebetween, and a black and white signal based on the luminance signal from which the color signal of the faulty circuit has been removed is displayed as a black and white image on a color CRT. A method for removing an obstacle in a color-compatible electronic determination device, characterized in that: 2. R, input from a color slit camera,
2. The color correspondence apparatus according to claim 1, wherein, among the G and B color signals, a color signal having a high degree of importance is input to a signal processing circuit having no obstacle and then converted into a luminance signal. A fault removal method in the electronic determination device of the above.