JP3072732B2 - Signal processing circuit in electronic judgment device for color - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art A color-compatible electronic judgment device according to the prior art.
FIG. 3 shows a circuit configuration of the color signal processing circuit in the device.
You. Image taken by color slit camera 101
The image signal is divided into R, G, B signals,
Input to the road. R, G, B color system
Analog processing systems (buffer amplifier,
Processing system consisting of a clamp and a filter) 102₁~ 102
₃, A / D conversion circuit 103₁~ 103₃, Memory 104
₁~ 104₃, D / A conversion circuit 105₁~ 105₃And
And analog processing system (processing consisting of filters and drivers)
System) 106₁~ 106₃It is constituted by. Above
The signal processed by the color signal processing circuit
Log processing system 106 ₁~ 106₃From the R, G, B signals
Input to the color CRT 107 and display as color video
Is done. Also, the image capture clock generation circuit 108
-Slit camera 101 and A / D conversion circuit 103₁~ 1
03₃The image display clock generation circuit
110, a color CRT 107 and a D / A conversion circuit 105₁
~ 105₃Is synchronized. The arbitration circuit 109 is an image
The clock of the capture clock generation circuit 108 and the image display clock
The clock from the clock generation circuit 110 is input to the memory 1
04₁~ 104₃Times to mediate read or write
Road.

[0003]

When a trouble occurs in the electronic judgment device, the influence thereof is extremely large. Therefore, it is required that the electronic judgment device has high fault tolerance. It is desired that a judgment image be obtained. The above-described color signal processing circuit according to the related art includes:
The system is configured to simultaneously process three input color signals and output signals for each system, so that judgment is made on a color image, so that one or two of the three systems fail. When this occurs, a biased color image is displayed, making it difficult to determine.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the problems in the prior art,
When a failure is recognized from the T image, a circuit is configured to freely select one of the three systems for the black and white signal to process the signal, or to perform the signal processing for the three systems simultaneously. The circuit is configured so that one system output can be selected. In addition, in the color image of biased color
Is the luminance component at the same time as the missing color component of the failed signal.
Minutes are lost. Missing color components of the failed signal
The image loses color balance due to dropping, and the luminance component
At the same time, the luminance component of the failed signal
Only the image is missing and the brightness balance is lost. Luminance
When the balance is lost, the contrast of the image is reversed.
Sometimes. For example, the part that should be displayed in G (green)
Minute, the G (green) signal is lost, the color component and the luminance component are missing.
Display color is expressed in black,
It cannot be distinguished from black. However, white with a luminance component
When a black signal is input, the color signal disappears but each color has
Since the luminance component is normal, it is expressed with the correct gradation.
Makes the determination easier. Judgment on black and white images is the same as with conventional equipment
In comparison with abnormal color images
Becomes easier.

[0005]

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 according to the present invention. A black-and-white signal from a black-and-white slit camera 1 is divided and input to three color signal processing circuits, and an analog processing system is provided. (buffer amplifier, clamp, processing system consisting of _filter) 2 1 to 2
_3, A / D conversion circuit ₃ 1 to 3 _3, the memory ₄ 1 _{to 4} 3, D
It is the signal processing in the / A converter ₅ 1 to 5 _3. Monochrome signal output from the D / A converter ₅ 1 to 5 _3,
Analog processing system through a switch circuit 12 black-and-white signal distribution circuit 13 (processing system consisting of filters and drivers) 6 ₁
Enter the 6 _3, color C by selecting one system in three lines
The image is displayed on the RT 7 as a monochrome image. The black-and-white signal distribution circuit 13 converts the input signal into R: G: B = 1: 1: 1.
This is a circuit having a function of distributing so that

The switch circuit 12 and the black and white signal distribution circuit 13
More comprising 3 lines simultaneously switching circuit 11 includes not only the position shown in FIG. 1, the analog processing system 2 ₁ - a portion indicated by the symbol
2 ₃ and between the A / D converter circuit ₃ 1 to 3 _3, between the A / D converter circuit ₃ 1 to 3 ₃ and the memory ₄₁ to _3, and the memory ₄₁ to ₃ and the D / A converter it may be provided between the circuit ₅ 1 to 5 _3. The image capture clock generation circuit 8, the arbitration circuit 9, and the image display clock generation circuit 10 are the same as those in the related art, and thus the description is omitted.

FIG. 2 is a block diagram showing a circuit configuration of a second embodiment of the present invention. Except that the switch circuit 14 during the monochrome slit camera 1 and the analog processing system 2 ₁ to 2 ₃ is provided, is the same as the first embodiment. Switch circuit 14, a switching circuit for selecting one system from among the three systems, is provided between the D / A converter 5 ₁ to 5 ₃ and the analog processing system ₆₁ through _third switch Circuit 1
It is switched in conjunction with 2. That is, in the second embodiment, signal processing is performed by selecting one of the three systems. On the other hand, in the first embodiment, a circuit is configured so that signal processing is performed on three systems simultaneously and one of the three systems outputs the signals.

[0008]

As described above, according to the present invention, 3
Even if a failure occurs in one or two of the signal processing systems of the system, a healthy system can be selected and used for determination. Therefore, by providing a simple signal switching circuit, it is possible to improve the reliability of the electronic determination device.

[Brief description of the drawings]

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

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

FIG. 3 is a block diagram showing a circuit configuration of a conventional color signal processing circuit.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Black-and-white slit camera 2 _{1 to} 2 ₃ Analog processing system 3 _{1 to} 3 ₃ A / D conversion circuit 4 ₁ to 4 ₃ Memory 5 _{1 to} 5 ₃ D / A conversion circuit 6 _{1 to} 6 ₃ Analog processing system 7 Color CRT 11 3 system simultaneous switching circuit 12,14 switch circuit 13 black and white signal distribution circuit

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-1-268383 (JP, A) JP-A-9-122287 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G09G 5/00 510 H04N 7/18

Claims (3)

(57) [Claims] A color signal in a color-compatible electronic determination device for simultaneously processing three black-and-white video signals from a slit camera input to a color signal processing circuit comprising three R, G, and B systems and displaying the same as an image on a CRT. In the processing circuit, when the occurrence of a failure is recognized in the image on the CRT,
A signal processing circuit in a color-compatible electronic determination device, wherein a circuit for simultaneously switching three systems is provided so as to switch a failure generating circuit in the three-system color signal processing circuit to a sound circuit. 2. A three-system simultaneous switching circuit (11) comprising a switch circuit (12) for simultaneously switching three systems and a black-and-white signal distribution circuit (13) is provided at one place among the components constituting the color signal processing circuit. The signal processing circuit according to claim 1, wherein the signal processing circuit is provided. 3. A switch circuit (14) for simultaneously switching three systems is provided between a slit camera and a color signal processing circuit comprising three systems of R, G, and B, and a component between the components constituting the color signal processing circuit is provided. In one of them,
A three-system simultaneous switching circuit (1) comprising a switch circuit (12) for simultaneously switching three systems and a monochrome signal distribution circuit (13)
The signal processing in the color-compatible electronic determination device according to claim 1, wherein 1) is provided, and the two sets of switch circuits (12) and (14) are switched in conjunction with each other. circuit.