KR100327399B1 - TV's On-Screen Display - Google Patents

Abstract

PURPOSE: An on-screen display of a TV is provided to separately construct a memory for storing OSD character information to diversify forms and sizes of characters and functions of the display. CONSTITUTION: An on-screen display of a TV includes a main microcomputer(21), a sub-microcomputer(22), a PLL unit(23), a controller(24), and a memory(25). The main microcomputer controls the overall operation of a system and outputs information about characters or graphics. The sub-microcomputer designates addresses of the memory according to the output signal of the main microcomputer and output a signal in the form of bit map. The PLL unit generates a system reference clock signal from horizontal and vertical synchronous signals. The controller stores the information about characters or graphics in the memory or outputs the information from the memory and generates RGB OSD output signals under the control of the sub-microcomputer. The memory stores the output signal of the sub-microcomputer in the form of bit map.

Description

TV's On Screen Display

The present invention relates to an on-screen display (OSD) on a TV (TV), and in particular, by configuring a memory (memory) for storing the character information of the OSD to diversify the shape and size of the character and graphics function An on-screen display device of a television (TV) adapted to be suitable for carrying out the present invention.

Hereinafter, an on-screen display device of a TV according to the prior art will be described with reference to the accompanying drawings.

1 (a) and (b) are block diagrams illustrating an OSD device according to the prior art.

In general, there are two methods of processing an OSD (On Screen Display) by connecting the OSD processing unit outside the microcomputer and using the OSD processing unit in the microcomputer.

First, as shown in FIG. 1 (a), a horizontal sync signal Hp and a vertical sync signal Vp are input to calculate a position at which a character is to be displayed on a TV screen. OSD processing section for generating OSD signal with pixel driving information

(2), a CPU (Central Processing Unit) for transmitting data relating to a character to the OSD processing unit (2), and a microcomputer (1) having a built-in CPU and storing positions and types of characters to be displayed in a program area. It consists of.

When the CPU reads data on the position and type of characters stored in the microcomputer 1 and transmits the data to the OSD processing unit 2, the OSD processing unit 2 transmits the horizontal synchronizing signal Hp and the vertical synchronizing signal Vp. Compares the position where text is to be received and generates corresponding data at the corresponding position to output RGB 3 OSD signals.

The OSD signal is synthesized with the image signal of the image signal processor 3 so that the corresponding character is displayed at a specific position.

In addition, the OSD device of FIG. 1 (b) is a structure in which the OSD processing unit 2 is embedded inside the microcomputer 1, and the simplified structure of the OSD system is implemented. The same operation as the OSD device of FIG. Do it.

However, in the OSD device according to the related art, there is a problem in that various types of information cannot be provided because the form and number of characters are limited.

The present invention has been made to solve the above-mentioned conventional problems, and constitutes a memory (memory) for storing the character information of the OSD to vary the shape and size of the character, to be suitable for performing graphics functions The purpose is to provide an on-screen display of a TV.

On-screen display of the TV (TV) of the present invention for achieving the above object is a main microcomputer for controlling the entire system, and outputs information on characters or graphics, and the address of the memory unit by the output signal of the main microcom A sub-microphone for outputting a bitmap-type signal, a PLL (Phase Locked Loop) unit for generating a system reference clock signal from input horizontal and vertical synchronization signals, and a memory unit under control of the sub-microphone. Or a controller for storing or outputting information on a graphic and generating an OSD output signal of RGB at a corresponding position of a system reference clock signal, and a memory unit for storing an output signal relating to a character or graphic of the submicrocomb in a bitmap form. Characterized in that it comprises a.

Hereinafter, an on-screen display device of a television (TV) according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of the OSD device of the present invention.

First, control the whole system and store position information, color information, initial information, neutral information, final information and position information about graphic, color information, and point information. A main microcomputer 21 for outputting, a submicrocomer 22 for designating an address of a memory unit based on the output signal of the main microcomputer 21, and outputting a signal in the form of a bitmap, an input horizontal synchronization signal Hp, The PLL (Phase Locked Loop) unit 23 which generates a system reference clock signal from the vertical synchronization signal Vp, and the memory unit 25 store information on characters or graphics in the memory unit 25 under the control of the submicron 22. A controller 24 for generating or outputting an OSD output signal of RGB at a corresponding position of a system reference clock signal, and storing an output signal relating to a character or graphic of the submicrocommator in bitmap form. It is configured to include a rib (25).

Referring to the operation of the on-screen display of the TV according to the present invention described above are as follows.

3 (a) and 3 (b) are explanatory diagrams showing an OSD method according to the present invention, and FIG. 4 is an explanatory diagram showing another embodiment of the OSD method according to the present invention.

First, as shown in (a) and (b) of FIG. 3, when the letter “one” is to be displayed in yellow, first, as shown in FIG. 3 (a), the main microcomputer 21 displays the character to be displayed on the screen. The positional information, color information, initial consonant information, neutral information, and final information related to the information are output to the submicrocomer 22.

Sub-microcom 22 then analyzes the output signal of the main micro-com 21 to search for various Korean fonts stored in the program area inside sub-micro 22 to determine the appropriate character form. Done.

That is, the position information on the horizontal and vertical coordinates of "one", the yellow color information, the initial information "ㅎ", the neutral information "ㅏ", and the initial information "ㅎ", The neutral information "# " and the final information " b " are combined with the information on the character form determined by the submicrocomputer 22 to calculate the address of the memory in which the bitmap data is to be stored.

By the determination of the address, the color of the character is determined from the position at which the character is to be displayed on the screen and the color information.

In the case of yellow as in the embodiment of the present invention, data is stored in the R memory and the G memory.

When the data and the address to be stored in the memory unit 25 are determined, the sub-microcom 22 stores the data in the memory unit 25 through the controller 24.

At this time, the controller 24 should display the OSD information on the screen when the sub-microcomputer 22 stores or outputs data in the memory unit 25. As shown in FIG. ) To read / write the memory unit 25.

That is, the address for storing the data of the "R" component for the character "one" in the reading memory during the T _CLK / 2 period is determined by the submicrocomb 22, and under the control of the controller 24, the reading memory. The data is stored in the wealth.

Subsequently, during the remaining T _CLK / 2, an operation for actually displaying OSD data on the TV screen is assigned an address for the screen data to the memory unit of each RGB so that the controller outputs the data. The signal is synthesized with the video signal output from the video signal processor 26 to output a composite video signal displaying characters on a specific portion of the TV screen.

And during the next cycle, the following operation is performed.

During T _CLK / 2, the address for storing the data of the "G" component for the character "one" in the G memory is determined in the sub-microcomputer 22, and the data is stored in the G memory section under the control of the controller 24. .

Subsequently, during the remaining T _CLK / 2, an operation for actually displaying OSD data on the TV screen is assigned an address for screen data to a memory unit of each RGB so that the controller outputs the stored data, and the RGB data signal is an image signal processor. Characterized on the video signal output from the (26) is displayed on a specific portion of the TV (TV) screen and outputs a composite video signal.

System reference clock as above The submicrocomb 22 accesses the memory section 25 via the controller 24 to store data during the half cycle of the second cycle, and the controller 24 accesses the memory section 25 for the remaining half cycle. To read the data.

And another embodiment of the on-screen display of the TV according to the present invention will be described.

4 is an explanatory diagram showing another embodiment of the OSD method according to the present invention.

When the main microcomputer 21 transmits the positional information, the color information, and the point information about the graphic to the submicrocom 22, the submicrocom 22 stores the information in the memory unit 25 in the form of a bitmap.

Looking at the graphic operation as follows.

From the point information, start from (H, V) = (4,0) and move to (0,4), then connect in a straight line, move to (0,7) again, then in a straight line, and move to (3,7) Then go straight (7,3), go straight (7,3), go straight (4,3), go straight (4,0) and go straight (4,0) Implement the function.

The graphic coordinates are divided into a starting point, an end point, and a move point and stored in the memory unit.

The on-screen display device of the TV according to the present invention as described above separately configures a memory for storing the character information of the OSD, thereby varying the shape and size of the character and diversifying its functions such as graphic functions. It works.

1 (a) and (b) are block diagrams of an OSD device according to the prior art.

2 is a block diagram illustrating an OSD device according to the present invention.

3 (a) and 3 (b) are explanatory diagrams showing the OSD method according to the present invention.

4 is an explanatory diagram showing another embodiment of the OSD method according to the present invention;

* Explanation of symbols for the main parts of the drawings

21: main microcom 22: submicrocom

23: PLL section 24: controller

25 memory unit 26 image signal processing unit

Claims (4)

A main microcomputer that controls the entire system and outputs information on characters or graphics, A sub-microphone that specifies an address of a memory unit according to the output signal of the main microcomputer and outputs a signal in a bitmap form; PLL (Phase Locked Loop) section for generating a system reference clock signal from the horizontal and vertical synchronization signal input; A controller for storing or outputting information on characters or graphics in a memory unit under the control of the submicrocom, and generating an OSD output signal of R.G.B at a corresponding position of a system reference clock signal; And a memory unit for storing an output signal relating to a character or a graphic of the submicrocomb in a bitmap form. The method of claim 1, The main microcomputer is a TV on-screen display device, characterized in that for storing the position information, color information, consonant information, neutral information, final information about the character. The method of claim 1, The main microcomputer further includes a location information, color information, and point information on the TV. The method of claim 1, The sub-microcom is a TV on-screen display device characterized in that for determining the type of the character when outputting the character information of the main micro.