JPH0537842A - Adjustment device for color video camera - Google Patents

Abstract

PURPOSE:To allow the user to adjust color and picture quality freely by remote control by providing a remote control unit able to vary each adjustment state of plural adjustment sections. CONSTITUTION:A color video camera 11 in which a projected optical image of an object is converted into a picture signal by using a solid-state image pickup element and the signal is sent externally via plural adjustment sections adjusting color and picture quality is provided with a remote control unit 13 able to vary the adjustment state of the plural adjustment sections respectively. After the color of a monitor 12 is adjusted by using color bars in W(white), Ye(yellow), Cy(cyan), G(green), Mg(magenta), R(red) and B(blue), the picture picked up by the color video camera 11 is displayed on a monitor 12, and the user controls the remote control unit 13 while observing the screen of the monitor 12 to implement RB balance adjustment, contour adjustment and hue adjustment or the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adjusting device for a color video camera which allows remote adjustment of color and image quality.

[0002]

2. Description of the Related Art As is well known, in a color television camera, image quality (vividness of image), color intensity, color tone, black level (to distinguish dark parts of an image), unicolor (ambient brightness) It is possible to make various adjustments related to color and image quality, such as changing the shade of the screen depending on the size), but with a color video camera, the user can freely adjust the color and image quality. There is the inconvenience that you cannot do it.

[0003]

As described above, the conventional color video camera has a problem that the user cannot freely adjust the color and the image quality, which is inconvenient.

Therefore, the present invention has been made in consideration of the above circumstances, and provides an extremely good color video camera adjustment apparatus in which a user can freely perform color adjustment and image quality adjustment by remote control. The purpose is to provide.

[0005]

An adjusting device for a color video camera according to the present invention uses a solid-state image sensor to convert an optical image of a photographed object into an image signal and adjusts colors and image quality. In a color video camera that sends data to the outside via an adjusting unit, a remote control unit is provided which can change the adjusting states of a plurality of adjusting units.

[0006]

With the above-described structure, the user can freely perform color adjustment, image quality adjustment, and the like by remote control by the remote control unit.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. In FIG. 1, W (white), Ye (yellow), Cy (cyan), G (green), Mg (magenta), R (red) and B generated by the color video camera 11 are used.
After the color adjustment of the monitor 12 is performed using the (blue) color bar, the image captured by the color video camera 11 is displayed on the monitor 12, and the user operates the remote control unit 13 while looking at the screen of the monitor 12. By operating
RB balance adjustment, contour adjustment, hue adjustment, etc. are performed.

The inside of the color video camera 11 is constructed as shown in FIGS. That is, an optical image of the photographed subject is formed on the solid-state image sensor 14 such as a CCD (charge coupled device), and is output as an electric image signal. The image signal output from the solid-state image sensor 14 passes through an S / H (sample / hold) circuit 15 and then an AGC (automatic
The gain control circuit 16 controls the gain based on the detection output of the flicker detection circuit 17.

The image signal output from the AGC circuit 16 is supplied to an LPF (low pass filter) 18 to extract a high frequency component Y _{H of} a luminance signal, and a delay circuit 19
Is supplied to the terminal 20 via. In addition, the AGC circuit 16
The image signal output from is supplied to the S / H circuit 21 to (G + Ye) on even lines and (G + C) on odd lines.
y) signal is taken out and the S / H circuit 22
To (Mg + Cy) on the even lines and (Mg + Ye) on the odd lines.

The signals extracted from the S / H circuits 21 and 22 are added to the adder circuit 2 via LPFs 23 and 24, respectively.
After being added by 5, it is supplied to one input terminal of each of the arithmetic circuits 27 and 28 via the delay circuit 26. Also,
The levels of the signals output from the LPFs 23 and 24 are adjusted by the resistance circuits 31 and 32 whose resistance values change according to the coefficients K1 and K2 supplied to the input terminals 29 and 30, respectively. Further, the respective signals output from the LPFs 23 and 24 are subtracted by the subtraction circuit 33. Also, LPF
The levels of the signals output from 23 and 24 are adjusted by the resistance circuits 36 and 37 whose resistance values change according to the coefficients L1 and L2 supplied to the input terminals 34 and 35, respectively.

The output signals of the resistance circuits 31 and 32 and the output signal of the subtraction circuit 33 are added by an addition circuit 38 and then supplied to a WBGCA (white balance gain control amplifier) circuit 39. The white balance is adjusted and the resistance circuit 36,
The respective output signals of 37 and the output signal of the subtraction circuit 33 are added by the addition circuit 40, and then supplied to the WBGCA circuit 41 for white balance adjustment. Therefore, the coefficients K1, K2 and L1, L2 are set to the remote operation unit 1
The RB balance can be adjusted by changing the signal ratio by changing the signal ratio by the operation of 3.

The outputs of the WBGDA circuits 39 and 41 are passed through delay circuits 42 and 43, respectively, and arithmetic circuits 27 and 28 are output.
Is supplied to the other input terminal of each. Then, the arithmetic circuit 27
Then, the output of the delay circuit 42 is subtracted from the output of the delay circuit 26, and the result is output to the terminal 44. In addition, the arithmetic circuit 28
Then, the output of the delay circuit 43 is subtracted from the output of the delay circuit 26, and the result is output to the terminal 45.

[0013] Here, the terminal 20 a luminance signal high band supplied to the components Y _H are supplied to the horizontal contour circuit 46 and a vertical contour circuit 47, the horizontal edge component and the vertical edge component is extracted. From the horizontal contour circuit 46,
The luminance signal high frequency component Y _H is output as it is. And
The horizontal edge component and the vertical edge component are level-adjusted by the resistance circuits 50 and 51 whose resistance values change according to the coefficients M1 and M2 supplied to the input terminals 48 and 49, respectively. It is added together with the range component Y _H. Therefore, the contours can be adjusted by changing the coefficients M1 and M2 by operating the remote operation unit 13 and changing the respective signal amounts.

The output signal from the adder circuit 52 is added with the synchronizing signal SYNC supplied to the input terminal 54 by the adder circuit 53, and output as a contour adjusted luminance signal high frequency component Y _H at the output terminal 55. To the monitor 12.

Next, R supplied to the terminals 44 and 45
The signals for which the B balance has been adjusted are changed over by the switches 56, 1
H (1 horizontal scanning period) delay circuit 57, double-switching switch 58, coefficients N1, N supplied to input terminals 59, 60
By the resistance circuits 61 and 62 and the adding circuit 63 and 64 varies in resistance in response to _{2, Y L -R, Y L} -B component is supplied to the encoder 65 is taken out. In this case, the changeover switch 56 and 2 barreled changeover switch 58 is supplied to the input terminal _{66 (1/2) f H (f} H is the color subcarrier frequency) is the switching control in a cycle of the signal.

Then, the coefficients N1 and N2 are changed by the operation of the remote operation unit 13 to change the respective phase amounts, whereby the hue can be adjusted. Then, the output signal from the encoder 66 is added to the burst signal supplied to the input terminal 68 by the adder circuit 67, and is sent to the monitor 12 from the output terminal 69 as the hue-adjusted chroma signal C.

Therefore, according to the configuration of the above-described embodiment, the user operates the remote control unit 13 to change the coefficients K1, K2 and L1, L2 so that the RB is changed.
The balance can be adjusted, and the contour can be adjusted by changing the coefficients M1 and M2.
The hue can be adjusted by changing the coefficients N1 and N2.

The items to be adjusted are not limited to the RB balance, the contour and the hue described above, but the brightness, the white balance, the black balance and the like may be adjusted. Further, the user operates the remote control unit 13
The adjustment of each unit may be returned to the factory-shipped adjustment state by operating the reset switch of. The present invention is not limited to the above embodiment,
In addition, various modifications can be made without departing from the scope of the invention.

[0019]

As described in detail above, according to the present invention,
It is possible to provide an extremely favorable color video camera adjustment device in which a user can freely perform color adjustment and image quality adjustment by remote control.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention.

FIG. 2 is a block configuration diagram showing details of a main part of the embodiment.

FIG. 3 is a block configuration diagram showing details of a main part of the embodiment.

[Explanation of symbols]

11 ... Color video camera, 12 ... Monitor, 13 ... Remote operation unit, 14 ... Solid-state image sensor, 15 ... S / H circuit, 16 ... AGC circuit, 17 ... Flicker detection circuit, 1
8 ... LPF, 19 ... Delay circuit, 20 ... Terminals 21, 22
... S / H circuit, 23, 24 ... LPF, 25 ... Adder circuit,
26 ... Delay circuit, 27, 28 ... Arithmetic circuit, 29, 30 ...
Input terminals 31, 32 ... Resistance circuit, 33 ... Subtraction circuit, 3
4, 35 ... Input terminals, 36, 37 ... Resistor circuit, 38 ... Addition circuit, 39 ... WBGCA circuit, 40 ... Addition circuit, 41
... WBGCA circuit, 42, 43 ... Delay circuit, 44, 45
... output terminal, 46 ... horizontal contour circuit, 47 ... vertical contour circuit, 48, 49 ... input terminal, 50, 51 ... resistance circuit, 5
2, 53 ... Adder circuit, 54 ... Input terminal, 55 ... Output terminal, 56 ... Changeover switch, 57 ... 1H delay circuit, 58 ...
Dual-type changeover switch, 59, 60 ... Input terminal, 61, 6
2 ... Resistor circuit, 63, 64 ... Addition circuit, 65 ... Encoder, 66 ... Input terminal, 67 ... Addition circuit, 68 ... Input terminal, 69 ... Output terminal.

Claims (1)

Claim: What is claimed is: 1. A color that converts an optical image of a photographed subject into an image signal by using a solid-state image sensor and sends the image signal to the outside through a plurality of adjusting units for adjusting the color and the image quality. In a video camera, a color video camera adjusting device is provided with a remote control unit capable of changing the adjustment states of the plurality of adjusting sections.