KR970011506B1 - Image tone control system according to a kind of tv program in tv - Google Patents

Abstract

The system automatically adjusts the image onto the CRT based on the TV programs. The system includes a sender to transmit a mixing signal of an identifier signal and a broadcasting signal, a detector to detect selectively only an identifier signal among the received signals. The system has a memory to store the image adjusting data corresponding to the identifier signals and a controller to process the received image based on the image adjusting data and a selection mode to switch between auto mode and manual mode. The identifier signal is characterized by a special frequency, and that signal is digitally coded.

Description

Image control system of TV according to broadcasting program

1 is a block diagram showing the main components of a conventional TV.

2 is a block diagram showing an image adjustment system of a TV according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

A: Transmitter B: TV

21 Antenna 22 Tuner

23: intermediate frequency circuit 24: image processing unit

25 mixer 26 remote control unit

27: receiver 28,29: memory

30: OSD generator 31: Mode storage unit

32: microprocessor D ₁ to D _n : frequency discriminator

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcast system, and more particularly, to an image adjusting system of a TV according to a broadcast program, which enables automatic adjustment of a video signal output on a CRT (Cathode-ray Tube) according to a broadcast program in an optimal state.

FIG. 1 is a block diagram showing the main components of a general television set (television receiver). In the drawing, reference numeral 1 denotes a remote controller device for the viewer to remotely control the TV, and 2 receives a remote controller signal from the remote controller device 1. 3 is a microprocessor that controls the entire TV according to the control data input by the receiver 2, 4 is a program memory in which an operation program of the microprocessor 3 is stored, and 5 is a microprocessor 3 Is a data memory for storing various state data related to the control process of the data, that is, data related to the operation state of the TV.

Further, reference numeral 6 denotes an antenna, 7 denotes a tuner which tunes a predetermined broadcast frequency signal from the frequency signal received by the antenna 6, and 8 denotes an audio signal from the broadcast frequency signal tuned by the tuner 7. And an intermediate frequency circuit for demodulating the video signal, 9 denotes a base (Ba, Ba) and treble (TV) applied from the microprocessor 3 to the audio signal demodulated by the intermediate frequency circuit 8; A voice processing unit for executing audio processing in accordance with a control signal, 10 is Sharpness (Sh), Brightness (Br) applied to the video signal from the intermediate frequency circuit (8) from the microprocessor (3). The image processing unit performs image processing in accordance with control signals such as Color (Cr), Tint (Ti), and Contrast (Co).

Reference numeral 11 denotes an amplifier for amplifying a voice signal applied from the voice processor 9, and 12 denotes a horizontal and vertical synchronization signal H and V of the TV and address data from the microprocessor 3 On the basis of the AD and the OSD clock signal CLK, an OSD generator for displaying the control state of the TV input by the viewer using the remote controller 1, 13 is RGB (Read) applied from the image processor 10. , Green, Bule) and a mixer mixing the RGB signal applied from the OSD generator 12, 14 drives a CRT (Cathoderay Tude; not shown) based on the RGB signal output from the mixer 13 CRT driving circuit.

In the above configuration, when the viewer wants to change the control state of the TV using the remote control device 1, that is, for example, the viewer wants to change the tone of the audio signal output to the speaker, When the treble adjustment button (or the adjustment knob installed in the TV main body) is pressed, the microprocessor 3 reads out the previously set base or treble adjustment state from the data memory 5 and sends it through the OSD generator 12. It will be displayed on the CRT.

When the viewer adjusts the bass or treble while viewing such a display, the microprocessor 3 varies and displays the adjustment state displayed on the CRT, while the base processor or treble control signal is displayed by the audio processor 9. (Ba, Tr) is output to change the adjustment state, and the adjustment state is stored in the data memory 5.

In addition, this control operation is similarly applied to other control objects adjusted by the remote control device 1 (or an adjustment knob installed on the TV main body), and the microprocessor 3 is used to control sharpness for controlling the image processor 10. Each circuit of the TV is controlled using the Sh, brightness (Br), color (Cr), tint (Ti), and contrast (Cn) control signals, and the controlled state is stored in the data memory (5). do.

However, in the TV which performs the above function, the operation of the operation is cumbersome because the adjustment process for the audio and video is entirely dependent on the manual work of the viewer.

In addition, programs currently being broadcasted through TV are diversified, such as movies, dramas, sports, and shows. In order to effectively watch programs broadcasted through TV, audio and video outputs are provided according to the types of programs. Although it is preferable to change the adjustment state of the above, it is virtually impossible to cope with each program properly because the adjustment work itself is cumbersome in the above-described TV.

Accordingly, the present invention has been made in view of the above-described circumstances, and according to a broadcast program that can adjust the video output of a TV according to a broadcast program that can automatically adjust the video output of a TV according to the type of TV program. The purpose is to provide a video adjustment system of the TV.

A video adjusting system of a TV according to the broadcast program of the present invention for realizing the above object comprises: transmission means for transmitting an identification signal indicating the type of a broadcast program together with a broadcast signal, and the identification signal from the broadcast signal received from the transmission means. Detection means for detecting a signal, and memory means for storing image adjustment data corresponding to the identification signal detected by the detection means, and detection based on the identification signal detected by the detection means and image adjustment data stored in the memory means. And a TV including control means for controlling a processing operation for the video signal.

According to the present invention having the above-described configuration, the optimum image adjustment is automatically performed according to the type of fireproof program, so that the viewer's convenience is greatly improved.

Hereinafter, an embodiment according to the present invention will be described with reference to the drawings.

2 is a system configuration diagram showing an image adjusting system of a TV according to a broadcast program according to an embodiment of the present invention. In the drawing, reference numeral A denotes a transmitting apparatus installed in a broadcasting station, and B denotes a main component of the TV as a receiving apparatus. It is shown.

The technical gist of the present invention includes a specific frequency signal or a code signal transmitted by the transmitting apparatus A, for example, in a color burst signal of a video signal according to the type of broadcast program (e.g., sports, news, movie, show…), The TV (B) side detects a specific frequency signal or code signal included in this color burst signal to determine the type of currently selected fireproof program, and then adjusts sharpness, brightness, color tint and By controlling contrast collectively, the optimum video output status is maintained.

This will be described in more detail with reference to FIG. 2.

In FIG. 2, reference numeral A denotes a transmitter for transmitting a specific frequency signal corresponding to a broadcast program in the color burst signal as described above, for example, and B denotes a TV as a receiver.

In the TV B, reference numeral 21 denotes an antenna for receiving a frequency signal transmitted from the transmitter A, 22 is a tuner for broadcasting station, and 23 is a composite from the frequency signal tuned by this tuner 22. An intermediate frequency circuit for detecting a video signal, 24 outputs R (Red), G (Green), B (Bule) and luminance signals based on the composite video signal applied from the intermediate frequency circuit 23. As shown in FIG. 1, an image processing unit which performs image processing according to the sharpness (Sh), brightness (Br), color (Cr), tint (Ti), and contrast (Cn) control signals from the microprocessor 32. And 25 denotes a mixer for mixing the RGB and luminance signals from the image processor 24 with the RGB and luminance signals from the OSD generator 30 to be described later and outputting them to the CRT driver.

Further, reference numerals D1 to Dn are frequency discriminators for detecting a specific frequency signal included in the color burst signal of the composite video signal output from the intermediate frequency circuit 23, and these frequency discriminators D to Dn respectively. Different discriminating frequencies are provided to detect different specific frequency signals corresponding to the types of fireproof programs.

Further, reference numeral 26 denotes a remote control unit for switching and selecting image adjustment to automatic or manual mode, 27 is a receiving unit for receiving a remote control signal from the remote control unit 26, 28 stores image adjustment data according to the manual mode. The first memory 29 is image adjustment data according to the automatic mode, that is, sharpness (Sh), brightness (Br), color (Cr), tint (Ti), and contrast (Cn) which are preset according to the type of broadcast program. A second memory 30 made of, for example, ROM, in which control data is stored, is an OSD generator for displaying an automatic / manual image adjustment mode selected by a viewer on a CRT (not shown).

Reference numeral 31 denotes a mode storage unit for storing the mode set by the remote controller 26, 32 is a microprocessor for controlling the entire apparatus, and the microprocessor 32 is connected to the mode storage unit 31. When the manual mode is set, the image processing unit 24 is controlled based on the image adjustment data Sh, Br, Cr, Ti, and Cn set by the viewer stored in the first memory 28 as in the normal TV. When the automatic mode is set in the mode storage unit 31, the image adjustment data (Sh, Br, Cr, Ti, Cn) stored in the second memory 29 according to the detection signal by the frequency discriminators D1 to Dn. ) To control the image processor 24.

That is, in the above configuration, when the viewer selects the automatic video mode using the remote controller 26, the microprocessor 32 sets the automatic mode in the mode storage unit 31 and the first to seventh frequencies. The image processing unit 24 is controlled by reading the image adjustment data Sh, Br, Cr, Ti, and Cn from the second memory 29 based on the discrimination inputs I1 to In from the discriminators D1 to Dn. Done.

In this case, as described above, optimal image adjustment data (Sh, Br, Cr, Ti, Cn) is stored in the second memory 29 according to the type of the broadcast program. Without this, it is possible to watch the optimal video according to the type of broadcast program.

In addition, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the technical scope of the present invention. For example, the specific frequency indicating the type of broadcast program in the above embodiment is color burst. It is also possible to use a specific frequency band of the audio signal rather than the signal.

As described above, according to the present invention, it is possible to realize a video adjusting system of a TV according to a broadcast program, which is capable of automatically performing optimal video adjustment according to the type of broadcast program.

Claims (6)

Transmission means for transmitting an identification signal indicating the type of fireproof program together with a broadcast signal, detection means for detecting the identification signal from the broadcast signal received from the transmission means, and corresponding identification signal detected by the detection means. A TV comprising memory means for storing image adjustment data and control means for controlling a processing operation for the detected image signal based on the identification signal detected by the detection means and the image adjustment data stored in the memory means. Image control system of the TV according to the broadcast program, characterized in that equipped with. The system of claim 1, wherein the identification signal is a specific frequency signal. The system of claim 1, wherein the identification signal is code data. The system according to any one of claims 1 to 3, wherein the identification signal is included in a color burst signal. 2. The apparatus according to claim 1, further comprising selecting means for selecting the image adjustment as the automatic / manual mode, wherein the control means comprises image adjustment data stored in the memory means only when the automatic mode is selected by the selection means. An image adjusting system of a TV according to a broadcast program, characterized in that for controlling image adjustment based on the control. 5. The video adjustment system according to claim 4, further comprising display means for displaying on the CRT the adjustment mode selected by the selection means.