KR20000000145U - Test pattern display of television - Google Patents

Abstract

The present invention relates to a test pattern for adjusting the screen of a television, and more particularly, to a test pattern for adjusting the screen even during television broadcasting. In general, it was not possible to adjust the screen during a television broadcast because the screen could be adjusted for a short time before the television broadcast began. Accordingly, in the present invention, a television having a test pattern for adjusting the performance of brightness, brightness, color, etc. of the television is not received from the outside, but having a specific test pattern embedded in the television itself to facilitate screen adjustment during television broadcasting. The test pattern display of is presented.

Description

Test pattern display of television

The present invention relates to a test pattern that is displayed in order to adjust the brightness, contrast, color, etc. of a television while watching a television. In particular, a test pattern having a specific shape is stored in the memory unit of the television, and the resolution, etc., can be adjusted according to the viewer's desire. The present invention relates to a test pattern display apparatus (TV) for displaying and adjusting a test pattern on a CRT of a television through a screen adjustment button provided in a remote controller.

In the television production process, there is a process of adjusting the resolution of the television to maintain the optimum resolution when shipped. In this process, in order to adjust the resolution of a television, an RF or AV signal received from a broadcasting station or the outside is required.

1 is an exemplary diagram of a high resolution test pattern of a conventional television. The pattern of Fig. 1 is loaded on an RF signal and an AV signal input from the outside of the television, received on the television, and displayed on the CRT. When the resolution of the television is to be adjusted, the user is configured to adjust while watching the test pattern of FIG. 1 displayed on the television.

The fineness of the television image determines how many pixels exist in the horizontal and vertical directions, which are expressed in horizontal or vertical resolution.

The resolution indicates the number of possible vertical lines within 1H period when the vertical white line is set in the horizontal direction. Actually, a test screen called a resolution pattern is taken and the resolution of the screen is read from the scale to measure the resolution. Measure the number of bars you see when you input a sine wave to the monitor.When counting the number of bars, one cycle of sine waves is 2 (1 white, 1 black), so multiply by 2 and the vertical resolution is 3 Since 4 is 3, the horizontal resolution is 4: 3, so multiply by 4/3 to calculate the resolution.

On the other hand, since the television resolution is 4.2 MHz, the number of pixels in the scanning line 1H is calculated as follows, taking into account 4.2 MHz in the number of screens (30 frames), the scanning player (525), and interlaced scanning.

This is a theoretical value, and in reality, it appears to be 330 fewer than this number on the receiver, but the resolution is increased by widening the video band. In modern HDTVs, the video bandwidth is 22MHz, so the resolution is improved to over 1000.

Table 1 shows the states of the resolutions that can be adjusted in the television resolution test pattern.

location Wedge number resolution Marker number Center horizontal direction Left 7 150-350 5 (50 intervals) Ooh 11 300-500 5 (50 intervals) Prize 11 300-500 5 (50 intervals) Ha 7 150-350 5 (50 intervals) Center vertical Top left 11 500-800 4 (100 intervals) Uha 11 800 to 1000 3 (100 intervals) Left vertical One 325 to 575 (25 intervals) Right vertical One 50 to 300 (25 intervals) Horizontal direction 5 150 to 400 (150 to 300) (250 to 400) 8 (50 intervals) Peripheral Vertical Direction 5 150 to 400 (150 to 300) (250 to 400) 8 (50 intervals) Peripheral Addition Vertical 5 500-800 4 (100 intervals)

In the conventional method of adjusting the resolution using the test pattern, when the user wants to adjust the resolution while using a television, a test pattern transmitted from a broadcasting station that is temporarily received before the start of the regular broadcast must be used. There was a problem inconvenient for the user to utilize.

The present invention is to solve the problems of the conventional test pattern display device as described above, an object of the present invention is to provide a test pattern display device for a television that can adjust the screen adjustment even during television broadcasting, to achieve this object The idea is to store a specific test pattern in a form suitable for adjusting the resolution on the television itself, and display it on the television to adjust the resolution if the resolution is to be adjusted.

1 is an illustration of a test pattern of a conventional television received from outside

2 is a block diagram of a test pattern display device according to the present invention

3 shows an example of a test pattern for adjusting a screen.

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

10 antenna 12 tuner section

14: intermediate frequency amplifier 16: A / V separation unit

18: voice signal processing unit 20: voice amplification unit

22: speaker 24: video signal processing unit

26: video output unit 28: CRT

30: microcomputer 32: memory unit

34: pattern processing unit 36: station selection device

Hereinafter will be described in detail with reference to the accompanying drawings for the configuration and operation of a suitable embodiment to achieve the object of the present invention.

2 is a block diagram of a television to which the television test pattern display device of the present invention is applied.

Antenna 10 for receiving a composite video signal transmitted from a broadcasting station, amplifying the composite video signal of a plurality of broadcasting stations received from the antenna 10 to perform high frequency processing and broadcasting according to driving of the tuner 34. A tuner section 12 for tuning the channel; An incremental frequency amplifying unit 14 connected to the tuner unit 12 and configured to detect an intermediate frequency from the composite video signal applied from the tuner unit 12 and perform an amplification process; An A / V separation unit 16 connected to the intermediate frequency amplifying unit 14 for separating and outputting an audio signal and a video signal from the composite video signal applied from the intermediate frequency amplifying unit 14; A voice signal processor 18 which is connected to the A / V separator 16 and removes residual color components from the applied audio signal separated from the A / V separator 16 to perform voice processing; A voice amplifier 20 connected to the voice signal processor 18 and receiving an output signal from the voice signal processor 18 to amplify and output power to the speaker 22;

An image signal processor 24 connected to the A / V separator 16 and separating and outputting a luminance signal Y and a color signal C from an applied image signal separated from the A / V separator 16. ; An image output unit 26 connected to the image signal processing unit 24 and outputting a color process on the image signal applied from the image signal processing unit 24 to the CRT 28;

A microcomputer 30 for receiving a control signal from an external device such as a remote controller and controlling a television system such as the tuning device 36 according to the signal; A memory unit 32 connected to the microcomputer 30 and storing a specific type of test pattern suitable for adjusting television resolution; The microcomputer 30 is connected to the microcomputer 30, the image signal processor 18, and the image output unit 26. When a resolution adjustment command signal is applied to the microcomputer 30 from a remote controller (not shown), the memory unit 32 is connected to the microcomputer 30. In order to display the stored test pattern on the television, it is composed of a pattern processor 34 which receives a control signal from the microcomputer 30 and performs signal processing.

FIG. 3 is an exemplary view of a test pattern for allowing a user to adjust a screen while watching television according to the present invention configured as described above. When the screen adjustment button provided on the remote controller is selected during television broadcasting, the screen is output through a CRT screen. . Therefore, the television user can adjust the screen by up and down the plus (+) or minus (-) of the brightness (Contrast: 100), brightness (110) and color (120) shown in FIG. do.

Hereinafter, the operation of the embodiment of the present invention will be described with reference to the configuration of FIG. 2 and FIG. 3.

The present invention is to make the screen of the television to the optimum state, when the television user wants to adjust the screen when watching the television, when pressing the screen adjustment button provided on the remote controller (not shown), the microcomputer 30 is the screen adjustment button Detect the electrical signal corresponding to After the control signal is applied to the memory unit 32, the stored test pattern is read and output to the CRT 28.

The television user selects up / down from each component of the test pattern illustrated in FIG. 3 displayed by the CRT 28 to adjust the screen, and signals adjusted through the remote controller are applied to the microcomputer 30, When the microcomputer 30 generates a control signal according to each of the applied signals and applies the control signal to the pattern processor 34, the pattern processor 34 displays the luminance 100, the brightness 110, and the color ( 120). Then, the adjusted signals are applied to the image signal processing unit 24, and are processed together with the image signal, and then amplified to have a large gain in the image output unit 26, and then the image signal whose screen is adjusted is converted into the CRT 28. Is displayed.

As described above, the present invention records the test pattern of a specific type in a memory unit controlled by the microcomputer of the television and displays the test pattern by a user's control command. There is an effect that can be adjusted.

Claims (2)

In a television having a test pattern for adjusting brightness, brightness, color, etc., Test pattern storage means for recording a specific type of test pattern, Pattern processing means for signal processing to display the test pattern on a television; When the user adjusts the test pattern displayed by the CRT (28), the test pattern control means for detecting a signal corresponding thereto to generate a control signal and applying it to the pattern processor 34 and then display the adjusted screen A test pattern display device for a television. 2. A test pattern display apparatus for a television according to claim 1, wherein said test pattern storage means records information on brightness, brightness, color, etc. for adjusting the screen of the television.