KR20030069318A - Color conversion unit for TV set - Google Patents

Abstract

PURPOSE: A device for transforming colors of a TV receiver is provided to select a color picture or a black and white picture to a TV user's taste through simple operation. CONSTITUTION: A mode selecting unit(201) receives a mode selecting signal from a user for switching a black and white mode, or a color mode. A memory unit(202) stores the current color set information when the mode selecting signal for black and white switching is inputted. A control unit(203) controls to realize a black and white picture after storing the current color set information when the mode selecting signal for black and white switching is inputted, and realize a color picture according to the current color set information stored in the memory unit.

Description

Color conversion unit for TV set {Color conversion unit for TV set}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color conversion apparatus of a TV receiver, and more particularly, to a technology for converting a color of a main screen or a sub screen of a broadcast broadcast through a TV receiver.

1 illustrates a color conversion apparatus in a conventional image output apparatus of a TV receiver.

As shown in the figure, the conventional video output apparatus 100 of a TV receiver includes a tuner unit 101, an IF amplifier unit 102, a P / S separation unit 103, and an image. A detector 104, an image processor 105, an image synthesizer 106, and an image output driver 107 are included.

The tuner 101 selects a predetermined broadcast channel from a frequency signal received through an antenna.

The IF amplifier 102 amplifies an intermediate frequency (IF) signal output from the broadcast channel selected by the tuner 101.

The P / S separator 103 separates and outputs an audio intermediate frequency (SIF) signal and an image intermediate frequency (PIF) signal from the amplified intermediate frequency (IF) signal output from the IF amplifier 102.

The image detector 104 detects an image intermediate frequency (PIF) signal separated and output by the P / S separation unit 103 and outputs a composite image signal (NTSC signal).

The image processor 105 processes the composite image signal (NTSC signal) output from the image detector 104 and outputs R, G, B, and Y signals.

The image synthesizing unit 106 synthesizes and outputs the R, G, B, and Y signals and the color control signal output by the image processing unit 105.

The image output driver 107 drives a displayer according to the signal output from the image synthesizer 106 and outputs the screen.

FIG. 2 illustrates a color conversion apparatus in a video output apparatus of a TV receiver having a conventional PIP function.

As shown, the image output apparatus 100 in this case allows the tuner unit 101 to select the main screen channel and the sub-screen channel for realizing the main screen and the sub-screen, and processes the main screen and the sub-screen respectively. Two image processing routines independent of each other, that is, the IF amplifiers 102a and 102b, the P / S separation units 103a and 103b, the image detectors 104a and 104b, and the image processor 105a. 105b, the R, G, B, and Y signals processed by the two independent image processing routines are synthesized through the image synthesizing unit 106 and output to the image output driver 107 to display an image. do.

The operation of each part of FIG. 2 described above performs the same function as that of each part of the same name shown in FIG. 1.

In the related art, in order to change the color of the screen output by the image output apparatus 100 of the TV receiver, the user may change the screen brightness, the screen color, the sharpness, etc. through a key button or a remote controller of the TV receiver. You had to change the various settings of the analog method.

That is, the image synthesizer 106 synthesizes the color control signals corresponding to the various setting values selected by the user with the signals output from the image processor 105 to output the screen in the color selected by the user.

However, in the conventional case, fine adjustment was easy in setting the color of the screen, but there was relatively a hassle of user key operation for such fine adjustment, and the circuit was complicated and the device was enlarged by providing various screen setting keys. There was a problem.

Accordingly, the present invention relates to a color conversion apparatus of a TV receiver, which allows a user to select a color to be unilaterally transmitted through simple key operation and to watch in black and white, mono color, and color mode. I did research.

The present invention has been invented under the above-described object, and an object thereof is to provide a color converting apparatus of a TV receiver, which enables a user to select and view a color suitable for a viewer's taste through a simple operation.

According to an aspect of the present invention for achieving the above object, the color conversion apparatus of the TV receiver according to the present invention is a TV (TV) for displaying an image by processing the NTSC analog video signal through a Chroma (Chroma) IC A color conversion apparatus of a receiver, comprising: a mode selection unit for receiving a mode selection signal for switching between a black and white or color mode from a user; A memory unit for storing current color setting information when a mode selection signal for black and white mode switching is input; When inputting a mode selection signal for black and white mode switching, the current color setting information is stored in the memory unit, and the color IC is signaled to the chroma IC to implement a black and white screen by setting the color density to a minimum, and a mode selection signal input for color mode switching. And a control unit which signals the chroma IC to implement a color screen according to the color setting information stored in the memory unit.

According to another aspect of the present invention, the color conversion apparatus of a TV receiver according to the present invention is a color conversion apparatus of a TV receiver for processing an NTSC analog image signal through a chroma IC to display an image. A mode selection unit for receiving a mode selection signal for switching between black and white or color modes from a user; A memory unit for storing current color setting information when a mode selection signal for black and white mode switching is input; An image processing controller for turning on / off a color killer operation of a chroma IC according to a mode selection signal for switching between black and white or color modes; When the mode selection signal for black and white mode switching is input, the current color setting information is stored in the memory unit and then signaled to the image processing controller to turn on the color killer operation, and when the mode selection signal for color mode switching is input, And a control unit signaling a signal for turning off the color killer operation to the image processing control unit so as to restore the color screen according to the color setting information.

According to another aspect of the present invention, a color conversion apparatus of a TV receiver according to the present invention digitally converts an NTSC analog video signal, stores it in a frame memory, and transmits it to a display device to implement a digital TV ( A color conversion apparatus of a receiver, comprising: a mode selection unit receiving a mode selection signal for switching between black and white, mono or color modes from a user; A memory unit for storing current color setting information when a mode selection signal for black and white or mono mode switching is input; When inputting a mode selection signal for black and white mode switching, the current color setting information is stored in the memory unit, and the luminance value Y is calculated and mapped to R, G, and B data to implement a black and white screen, and a mode for mono mode switching. When the selection signal is input, the current color setting information is stored in the memory unit, and the luminance value Y is calculated and mapped to any one of the R, G, and B data corresponding to the corresponding mono color to implement the corresponding mono screen. And a control unit for implementing a color screen according to color setting information stored in the memory unit when a mode selection signal for color mode switching is input.

According to an additional aspect of the present invention, a color converting apparatus of a TV receiver according to the present invention is characterized in that the color converting apparatus of the TV receiver has a main screen and / or a sub-screen according to a picture in picture (PIP) function. And a screen selector for switching between black and white or mono or color mode for; The control unit may further include controlling to perform color conversion on the main screen and / or the sub-screen selected by the screen selection unit.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a color conversion apparatus in a video output apparatus of a conventional TV receiver.

FIG. 2 is a view showing a color conversion device in a video output device of a TV receiver having a conventional PIP function.

3 is a block diagram according to a first embodiment of a color conversion apparatus of a TV receiver according to the present invention.

4 is a block diagram according to a second embodiment of a color conversion apparatus of a TV receiver according to the present invention.

5 is a block diagram according to a third embodiment of a color conversion apparatus of a TV receiver according to the present invention.

6 is a block diagram according to a fourth embodiment of a color conversion apparatus of a TV receiver according to the present invention.

7 is a block diagram according to a fifth embodiment of a color conversion apparatus of a television receiver according to the present invention.

8 is a block diagram according to a sixth embodiment of a color conversion apparatus of a television receiver according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100: image output device 101: tuner unit

102, 102a, 102b: IF amplification section 103, 103a, 103b: P / S separation section

104, 104a, 104b: image detector 105, 105a, 105b: image processor

106: image synthesis unit 107: image output driver

200, 210, 220: Color converter 201, 211, 221: Mode selector

202, 212, 222: Memory unit 203, 214, 223: Control unit

204, 215, 224: screen selector 213: image processing control

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily understand and reproduce the present invention.

3 is a block diagram according to a first embodiment of a color conversion apparatus of a TV receiver according to the present invention.

The color converting apparatus of the TV receiver according to the present embodiment is a color converting apparatus of an image output apparatus of an analog TV receiver which processes an NTSC analog video signal through a chroma IC to display an image. In this case, the chroma IC density adjustment is used to implement a color / monochrome screen.

The color converting apparatus 200 of the television set according to this embodiment includes a mode selection unit 201, a memory unit 202, and a control unit 203.

The mode selector 201 receives a mode selection signal for black and white or color mode switching from a user.

The mode selector 201 is used for switching between black and white or color mode input by the user through a black and white / color switching button (not shown) on the TV set or a black and white / color switching button (not shown) on the remote controller. Receive the mode selection signal.

The mode selection unit 201 may be a remote control signal receiving unit for receiving a mode selection signal for switching between black and white or color modes from a remote controller (not shown).

Conventional TV receivers or remote controllers have various screen setting keys such as brightness adjustment keys, color selection keys, and sharpness adjustment keys, and the user performs color conversion by appropriately combining these setting keys.

In contrast, the invention according to this embodiment requires only one key for black and white / color mode switching, thereby simplifying the device and having the advantage of no hassle of key operation.

The memory unit 202 stores current color setting information when a mode selection signal for black and white mode switching is input.

Under normal conditions, the TV receiver outputs the screen in color mode. If a signal is input from the user to switch from the color mode to the black and white mode, the current color setting information required for switching from the black and white mode to the color mode must be stored. The memory unit 202 stores the current color setting information when a mode selection signal for black and white mode switching is input from a user.

Therefore, the user can freely switch to black and white or color mode by a simple key operation of the user.

The control unit 203 stores the current color setting information in the memory unit 202 when inputting a mode selection signal for switching the black and white mode, and then signals the chroma IC to implement a black and white screen by setting the color density to the minimum. When inputting a mode selection signal for color mode switching, it signals the chroma IC to implement a color screen according to the color setting information stored in the memory unit 202.

Therefore, a mode selection signal for black and white or color mode switching input by a user through a key button of a TV receiver or a remote controller is received through the mode selection unit 201 and is output under the control of the control unit 203. The screen is easily switched to black and white or color. When switching from black and white mode to color mode, color setting information is read from the memory unit 202 to output a color screen according to the corresponding color setting information.

4 is a block diagram according to a second embodiment of a color conversion apparatus of a television receiver according to the present invention.

This embodiment relates to a color conversion device when the PIP function is added to the TV receiver according to the first embodiment.

In this embodiment, the video output device of the TV receiver has respective chroma ICs for outputting the main screen and the sub-screen video, and a PIP processing unit for implementing a PIP screen from the images output from the two chroma ICs. It is included.

Since a technique for processing a PIP screen is a technique that has been known and implemented in various ways before this application, a detailed description thereof will be omitted.

The color converting apparatus 200 of the TV receiver according to the present embodiment is a black and white or mono or color mode for a main screen and / or a sub picture according to a picture in picture (PIP) function in the color converting apparatus of the first embodiment. The apparatus further includes a screen selector 204 for switching, and the controller 203 further controls to perform color conversion on the main screen and / or subscreen selected by the screen selector 204. .

Accordingly, in this embodiment, a target screen for receiving color selection signals through the screen selection unit 204 and receiving color selection signals from the user through a key button or a remote controller of a TV receiver. And a mode selection signal for black and white or color mode switching input by a user through a key button of a TV receiver or a remote control unit under the control of the controller 203 by receiving the mode selection signal through the mode selection unit 201. The output screen is easily switched to black and white or color. When switching from black and white mode to color mode, color setting information is read from the memory unit 202 to output a color screen according to the corresponding color setting information.

5 is a block diagram according to a third embodiment of a color conversion apparatus of a television receiver according to the present invention.

The color converting apparatus of a TV receiver according to the embodiment relates to a color converting apparatus of a TV receiver for processing an NTSC analog video signal through a chroma IC to display an image. The Color Killer function is used to create a black and white / color screen.

The color converting apparatus 210 of the television set according to this embodiment includes a mode selection unit 211, a memory unit 212, an image processing control unit 213, and a control unit 214.

The mode selector 211 receives a mode selection signal for switching between black and white or color modes from a user.

The mode selector 211 is used to switch between black and white or color mode input by the user through a black and white / color switching button (not shown) of the TV set or a black and white / color switching button (not shown) of the remote controller. Receive the mode selection signal.

The mode selector 211 may be a remote control signal receiver that receives a mode selection signal for switching between black and white or color modes from a remote controller (not shown).

Conventional TV receivers or remote controllers have various screen setting keys such as brightness adjustment keys, color selection keys, and sharpness adjustment keys, and the user performs color conversion by appropriately combining these setting keys.

In contrast, the invention according to this embodiment requires only one key for black and white / color mode switching, thereby simplifying the device and having the advantage of no hassle of key operation.

The memory unit 212 stores current color setting information when a mode selection signal for black and white mode switching is input.

Under normal conditions, the TV receiver outputs the screen in color mode. If a signal is input from the user to switch from the color mode to the black and white mode, the current color setting information required for switching from the black and white mode to the color mode must be stored. The memory unit 212 stores current color setting information when a mode selection signal for black and white mode switching is input from a user.

Therefore, the user can freely switch to black and white or color mode by a simple key operation of the user.

The image processing controller 213 turns on / off a color killer operation of the chroma IC according to a mode selection signal for switching between black and white or color modes.

According to the NTSC standard, the RGB signal is converted into one luminance signal (Y) and two color signals (I, Q) and transmitted. Then, the color TV (TV) receiver produces a color image by mixing the luminance signal and the color signal. In this case, the luminance signal is a signal representing the contrast of the image, and the color signal is the remainder obtained by subtracting the luminance signal from three primary colors of RGB.

When the YIQ signal is used, when only a black and white screen is required, a gray scale image, that is, a black and white image may be obtained using only the luminance signal Y.

Accordingly, by controlling the color killer operation of the chroma IC through the image processing control unit 213, a black and white screen is realized using only the luminance signal Y, or the luminance signal Y and the color signals I and Q. You will use both to implement the color screen.

The control unit 214 signals the image processing control unit 213 to turn on the color killer operation after storing the current color setting information in the memory unit 212 when a mode selection signal for black and white mode switching is input, and color mode switching. When the mode selection signal is inputted to the image processing control unit 213, a signal for turning off the color killer operation to restore the color screen according to the color setting information stored in the memory unit 212.

Accordingly, a mode selection signal for black and white or color mode switching input by a user through a key button of a TV receiver or a remote controller is received through the mode selection unit 211, and is controlled under the control of the controller 214. By controlling the color killer operation of the chroma IC through the image processing control unit 213, the output screen can be easily switched to black and white or color, and the color is set from the memory unit 212 when switching from the black and white mode to the color mode. It reads the information and outputs the color screen according to the color setting information.

6 is a block diagram according to a fourth embodiment of a color conversion apparatus of a television receiver according to the present invention.

This embodiment relates to a color conversion apparatus when the PIP function is added to a TV receiver according to the third embodiment.

In this embodiment, the video output device of the TV receiver has respective chroma ICs for outputting the main screen and the sub-screen video, and a PIP processing unit for implementing a PIP screen from the images output from the two chroma ICs. It is included.

Since a technique for processing a PIP screen is a technique that has been known and implemented in various ways before this application, a detailed description thereof will be omitted.

The color converting apparatus 210 of the TV receiver according to the present embodiment is a black and white or mono or color mode for a main screen and / or a sub picture according to a picture in picture (PIP) function in the color converting apparatus of the third embodiment. The apparatus further includes a screen selector 215 for switching, and the controller 214 further controls to perform color conversion on the main screen and / or the sub-screen selected by the screen selector 215. .

Accordingly, in this embodiment, a target screen for receiving color selection signals through the screen selection unit 215 and receiving a selection signal through the screen selection unit 215 of a user input through a key button or a remote controller of a TV receiver. And a mode selection signal for black and white or color mode switching input by a user through a key button or a remote controller of a TV receiver through the mode selection unit 211 and under the control of the control unit 214. By controlling the color killer operation of the chroma IC through the image processing control unit 213, the output screen can be easily switched to black and white or color. When switching from black and white mode to color mode, the color from the memory unit 212 is changed. Read the setting information and output the color screen according to the color setting information.

7 is a block diagram according to a fifth embodiment of a color conversion apparatus of a television receiver according to the present invention.

The color converting apparatus of the TV receiver according to the present embodiment digitally converts an NTSC analog video signal using a digital video decoder, stores the same in a frame memory, and transmits the same to a display device to implement an image. Relates to a color conversion device.

The color conversion apparatus 220 of the television set according to this embodiment includes a mode selection unit 221, a memory unit 222, and a control unit 223.

The mode selector 221 receives a mode selection signal for switching between black and white, mono or color modes from the user.

The mode selection unit 221 is a black and white or mono input by the user through the black and white / mono / color switching button (not shown) of the TV set or the black and white / mono / color switching button (not shown) of the remote control Or receives a mode selection signal for color mode switching.

The mode selection unit 221 may be a remote control signal receiving unit for receiving a mode selection signal for switching between black and white, mono or color mode from a remote controller (not shown).

Conventional TV receivers or remote controllers have various screen setting keys such as brightness adjustment keys, color selection keys, and sharpness adjustment keys, and the user performs color conversion by appropriately combining these setting keys.

On the other hand, the invention according to this embodiment requires only one key for switching between black and white / mono / color modes, thereby simplifying the device and having the advantage of no hassle of key operation.

The memory unit 222 stores current color setting information when a mode selection signal for black and white or mono mode switching is input.

Under normal conditions, the TV receiver outputs the screen in color mode. If the user inputs a signal for switching from color mode to black and white or mono mode, the current color setting information required for switching from black and white or mono mode to color mode must be stored. The memory unit 222 stores current color setting information when a mode selection signal for black and white or mono mode switching is input from a user.

Therefore, the user can freely switch to black and white or mono or color mode by a simple key operation of the user.

The control unit 223 stores the current color setting information in the memory unit 222 when the mode selection signal for black and white mode switching is input, calculates a luminance value Y and maps it to R, G, and B data to generate a black and white screen. And store the current color setting information in the memory unit 222 at the time of inputting the mode selection signal for mono mode switching, calculate the luminance value Y, and any one corresponding to the corresponding mono color among the R, G, and B data. A mono screen is implemented by mapping the data to the data, and a color screen is implemented according to the color setting information stored in the memory unit 222 when a mode selection signal for color mode switching is input.

The mono color selected when the mono mode is selected is a color of a monochromatic system such as red, green, blue, magenta, cyan, and yellow.

Accordingly, a mode selection signal for switching between black and white, mono or color mode input by a user through a key button or a remote controller of a TV receiver is received through the mode selection unit 221 to control the control unit 223. The screen output below is easily switched to black and white or mono or color. At this time, when the controller 223 selects the black and white mode, the controller 223 stores the current color setting information in the memory unit 222 and calculates the luminance value Y. Mapping to R, G, and B data to implement a black and white screen, and when selecting a mono mode, the current color setting information is stored in the memory unit 222, and then a luminance value Y is calculated and the R, G, B data is stored. Mapping to any one of the data corresponding to the corresponding mono color to implement the corresponding mono screen, color selection according to the color setting information stored in the memory unit 222 when the color mode is selected By controlling to implement the side-view allows the user to easily select the black-and-white / mono / color screen for their taste.

8 is a block diagram according to a sixth embodiment of a color conversion apparatus of a television receiver according to the present invention.

This embodiment relates to a color conversion apparatus when a PIP function is added to a TV receiver according to the fifth embodiment.

In this embodiment, the video output device of the TV receiver includes a digital video decoder for outputting a main screen and a sub-screen video, and a PIP for implementing a PIP screen from the images output from the two digital video decoders, respectively. It includes a processing unit.

Since a technique for processing a PIP screen is a technique that has been known and implemented in various ways before this application, a detailed description thereof will be omitted.

The color conversion apparatus 220 of the TV receiver according to this embodiment is a black and white or mono or color mode for a main screen and / or a sub picture according to a picture in picture (PIP) function in the color conversion apparatus of the fifth embodiment. The apparatus further includes a screen selector 224 for switching, and the controller 223 further controls to perform color conversion on the main screen and / or subscreen selected by the screen selector 224. .

Accordingly, in the present embodiment, a target screen for receiving a selection signal through the screen selection unit 224 and receiving a color selection signal from the main screen and / or sub-screen input by a user through a key button or a remote controller of a TV receiver. And a mode selection signal for black and white or mono or color mode switching input by a user through a key button or a remote controller of a TV receiver through the mode selecting unit 221 to receive the mode selection signal. The screen output under control can be easily switched to black and white or mono or color. When switching from black and white or mono mode to color mode, color setting information is read from the memory unit 222 to output a color screen according to the corresponding color setting information. do.

Accordingly, the above object achieves the object of the color conversion apparatus of the TV receiver according to the present invention.

The color conversion apparatus of a TV receiver according to the present invention as described above allows a TV viewer to select and view colors according to his or her taste, that is, black and white or mono or a color screen through a simple operation. Has a useful effect.

Although the present invention has been described with reference to the accompanying drawings, it will be apparent to those skilled in the art that various modifications may be made therein without departing from the scope of the invention, which is covered by the following claims.

Claims (9)

In the color conversion apparatus of a TV receiver for processing an NTSC analog video signal through a chroma IC to display an image, A mode selection unit which receives a mode selection signal for switching between black and white or color modes from a user; A memory unit for storing current color setting information when a mode selection signal for black and white mode switching is input; When inputting a mode selection signal for black and white mode switching, the current color setting information is stored in the memory unit, and the color IC is signaled to the chroma IC to implement a black and white screen by setting the color density to a minimum, and a mode selection signal input for color mode switching. A control unit which signals the chroma IC to implement a color screen according to the color setting information stored in the memory unit; Color converting apparatus of the TV (TV) receiver comprising a. The method of claim 1, And the mode selection unit is a remote control signal receiving unit for receiving a mode selection signal for black and white or color mode switching from the remote control. The method according to claim 1 or 2, The color conversion apparatus of the TV receiver further includes a screen selection unit for switching between black and white or mono or color modes for a main screen and / or a sub picture according to a picture in picture (PIP) function; And the control unit controls to perform color conversion on the main screen and / or the sub-screen selected by the screen selection unit. In the color conversion apparatus of a TV receiver for processing an NTSC analog video signal through a chroma IC to display an image, A mode selection unit which receives a mode selection signal for switching between black and white or color modes from a user; A memory unit for storing current color setting information when a mode selection signal for black and white mode switching is input; An image processing controller for turning on / off a color killer operation of a chroma IC according to a mode selection signal for switching between black and white or color modes; When the mode selection signal for black and white mode switching is input, the current color setting information is stored in the memory unit and then signaled to the image processing controller to turn on the color killer operation, and when the mode selection signal for color mode switching is input, the memory is stored in the memory unit. A controller for signaling a signal for turning off the color killer operation to the image processing controller to restore the color screen according to the color setting information; Color converting apparatus of the TV (TV) receiver comprising a. The method of claim 4, wherein And the mode selection unit is a remote control signal receiving unit for receiving a mode selection signal for black and white or color mode switching from the remote control. The method according to claim 4 or 5, The color conversion apparatus of the TV receiver further includes a screen selection unit for switching between black and white or mono or color modes for a main screen and / or a sub picture according to a picture in picture (PIP) function; And the control unit controls to perform color conversion on the main screen and / or the sub-screen selected by the screen selection unit. In the color conversion apparatus of a digital television receiver for digitally converting an NTSC analog video signal and storing the same in a frame memory and transmitting the same to a display device, A mode selection unit for receiving a mode selection signal for switching between black and white or mono or color modes from a user; A memory unit for storing current color setting information when a mode selection signal for black and white or mono mode switching is input; When inputting a mode selection signal for black and white mode switching, the current color setting information is stored in the memory unit, and the luminance value Y is calculated and mapped to R, G, and B data to implement a black and white screen, and a mode for mono mode switching. When the selection signal is input, the current color setting information is stored in the memory unit, and the luminance value Y is calculated and mapped to any one of the R, G, and B data corresponding to the corresponding mono color to implement the corresponding mono screen. A control unit for implementing a color screen according to color setting information stored in the memory unit when a mode selection signal for color mode switching is input; Color converting apparatus of the TV (TV) receiver comprising a. The method of claim 7, wherein And the mode selection unit is a remote control signal receiving unit for receiving a mode selection signal for switching between black and white or mono or color modes from the remote control unit. The method according to claim 7 or 8, The color conversion apparatus of the TV receiver further includes a screen selection unit for switching between black and white or mono or color modes for a main screen and / or a sub picture according to a picture in picture (PIP) function; And the control unit controls to perform color conversion on the main screen and / or the sub-screen selected by the screen selection unit.