KR0176459B1 - On screen display character control and memory method - Google Patents

Abstract

The present invention relates to an OSD character size adjustment and storage method for adjusting the size of an OSD character displayed on a screen.

More specifically, it consists of the initial process, the enlargement and reduction process to the selection size, the horizontal and vertical simultaneous enlargement and reduction process, and the character erase process, so that it can be enlarged and reduced only vertically or horizontally at the current size. In addition, it is possible to simultaneously reduce and enlarge horizontally and vertically, and to automatically save and simultaneously reduce and enlarge.

In this case, if you change the size of the text only in the desired time zone and you do not want to change the size of the text, use the erase key to immediately return to the original size. The size of the text can be stored and written in each mode to satisfy the needs of many people, and the cost can be reduced because only a pure program can be improved within the range provided by the hardware.

Description

How to adjust and save text size on screen display

1 is a simplified block diagram of a circuit for performing an on-screen display character size adjustment and storage method according to the present invention.

2 is a diagram showing the configuration of a keypad attached to the television of FIG.

3 is a diagram showing the configuration of the remote controller of FIG.

4 illustrates an embodiment of vertical scaling of an on-screen display character in accordance with the present invention.

5 illustrates one embodiment of horizontal scaling of an on-screen display character in accordance with the present invention.

6 illustrates one embodiment of vertical / horizontal scaling of an on-screen display character in accordance with the present invention.

7 is a flowchart for performing a method for resizing and storing an on-screen display character according to the present invention.

* Explanation of symbols for main parts of the drawings

100: keypad 200: remote control

300: remote control receiver 400: micom

500: display unit 600: tuner

700: intermediate frequency IC 800: video IC

900: Voice IC 801: RGB Matrix IC

802: RGB driver 901: amplifier

SP: Speaker 401: Stack

402: character ROM 403: OSD circuit

Q1: Transistor LED: Light Emitting Diode

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television having an On Screen Display (hereinafter referred to as OSD) function, and more particularly, to vertically and horizontally adjust the size of OSD characters displayed on the screen, The present invention relates to an OSD character resizing and storage method that allows characters to be stored and deleted.

Conventionally, the OSD character is fixed at a certain size in the factory, and thus, the user cannot change the size of the character. In addition, since the size of the fixed character has a lot to do with the size of the screen, even if the size of the same character is well seen according to the size of the screen, it is difficult to see well.

Therefore, the size of the fixed character is determined by the manufacturer unilaterally, so consumers have no choice but to accept it.

SUMMARY OF THE INVENTION The present invention has been made to solve this problem, and an object of the present invention is to freely change the size of the OSD characters displayed on the screen within the range supported by conventional hardware, and also to remember the size of the changed characters and when desired. OSD text size can be adjusted according to the size of the screen, allowing easy viewing and saving and erasing of text using only a single key and program. have.

In order to achieve the above object, the present invention provides a method for displaying a mode corresponding to a key input when a key is input from a keypad or a remote controller attached to the set while the power is on. When the text control key is input from the keypad or the remote control while the OSD text is displayed, an initial process of setting the direction key to the text size adjusting key so that the size of the OSD text can be changed, and the OSD text displayed according to the input of the direction key is displayed. Zoom in and out to a selection size that saves the size of the changed character at the same time after zooming in and out within the limits supported by the OSD circuit, and horizontally within the vertical and horizontal limits supported by the OSD circuit by selectively inputting the direction key. Zoom in and out simultaneously in the vertical and vertical directions Horizontal / vertical zoom in and out to save the size in the OSD control register, and clear text to clear the size of the adjusted text, and clear the adjusted text to return only the currently displayed mode to the original text size specified by the manufacturer. OSD character size adjustment and storage method.

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

1 is a block diagram schematically illustrating a circuit for performing an OSD character size adjustment and storage method according to the present invention.

In more detail, a keypad 100 (attached to the television) and a remote controller 200 equipped with a character control key and a direction key for adjusting the size of an OSD character, and a key input from the remote controller 200 are received. A remote control receiver 300, a microcomputer 400 for controlling the entire system according to key signals provided from the keypad 100 and the remote controller receiver 300, and a radio frequency (RF) induced by the antenna ANT; ) By mixing another high frequency (produced within the receiver itself) with a high frequency tuned by a phase lock loop (hereinafter referred to as a PLL) signal provided by the microcomputer 400. After amplifying the tuner 600 and the intermediate frequency outputted from the tuner 600, the video signal and the audio signal are separated and output, and at the same time, automatic frequency control by the microcomputer 400 (AFC; Frequency Control Signal When the oscillation frequency of the oscillator circuit (not shown) is higher than the horizontal synchronizing signal sent from the transmitter, it automatically lowers the horizontal oscillation frequency and automatically raises it when the horizontal oscillation frequency is lowered so that the horizontal synchronism is always accurately obtained. R, G, B receiving an intermediate frequency IC (700) for outputting, an image signal output from the intermediate frequency IC (700) and an image control signal (P'TL) output from the microcomputer (400). Amplified by the amplifier 901 is provided with a video IC 800 to be separated into a signal, the audio signal output from the intermediate frequency IC 700 and the audio control signal (S'TL) output from the microcomputer 400 After the voice picker (SP) is composed of a voice IC (900) output to the outside.

In this case, the image control signal P'TL controls contrast, bright, color, tint, sharp, etc., and the audio control signal S'TL Control volume, bass, treble, balance and more.

The microcomputer 400 temporarily stores data RAM, a stack 41 used to store a return address when the microcomputer 400 processes the subroutine, and the microcomputer 400. ROM containing a program to be executed, a character ROM 42 having a CHARACTER font for displaying characters such as a selected channel number, volume control status, etc. on a television screen, and the character ROM ( 42) OSD circuit 43 which reads the character font to be displayed on the television screen, separates it into color signals R, G and B and luminance signal Y and outputs the information stored in the RAM. Arithmetic Logic Unit (ALU) that reads and performs operation according to the instructions of the microcomputer 400, and contains the address of the instructions in the memory to be executed next, and increments one by one to read the instructions stored in the memory continuously. Program to enable It consists of; (Program Counter PC) counter.

At this time, the OSD circuit 43 is provided with an OSD control register for storing the size of the changed character according to each mode.

An RGB matrix IC 801 for synthesizing and outputting color signals R, G, and B and luminance Y signals provided from the OSD circuit 43 of the image IC 800 and the microcomputer 400; An RGB driver 802 receives the color signals R, G, and B and the luminance signal Y output from the RGB matrix IC 801 and displays them on the CRT.

In addition, the display unit 500 is connected to the microcomputer 400. The display unit 500 includes a transistor Q1 having a base terminal connected to the microcomputer 400, an emitter terminal of the transistor Q1, and a power supply. It consists of a light emitting diode (LED) connected between the voltage terminals (+ B).

2 shows the configuration of the keypad 100 of FIG.

3 illustrates the configuration of the remote controller 200 of FIG. 1, and the size of the OSD text may be adjusted by using the character control key and the direction key.

4 is a view showing an embodiment of adjusting the size of the OSD text in the vertical direction according to the present invention.

5 is a view showing an embodiment of adjusting the size of the OSD text in the horizontal direction according to the present invention.

6 is a view showing an embodiment of adjusting the size of the OSD text in the vertical / horizontal direction according to the present invention.

7 is a flowchart for performing the method of adjusting and storing the OSD text according to the present invention, and includes an initial process, a vertical enlargement process, a vertical reduction process, a horizontal enlargement process, a horizontal reduction process, and a control character deletion process. Is done.

In addition, the initial process may include a step 701 in which an OSD character is displayed on a screen, and a step 702 in which a character adjustment key is input from a keypad 100 or a remote controller 200 when the OSD character is displayed on a screen. Is made in the following order.

In addition, the vertical magnification process includes a step 703 of determining whether a vertical magnification key ↑ is input to vertically enlarge the size of an OSD character after the character adjustment key is input, and a vertical magnification key ↑. Is input, the size of the displayed character is expanded by one step in the vertical direction (hereinafter referred to as one step in the vertical direction as 1 V) (704) and the size of the character enlarged by 1 V in the vertical direction is stored in the OSD control register. Step 705 is followed by step 706 for determining whether the size of the 1V magnified character is the vertical magnification upper limit provided by the OSD circuit 403. At this time, if the upper limit of the vertical magnification exceeds the size of the character provided by the OSD circuit 403, it is no longer vertically enlarged.

The vertical reduction process may include determining whether a vertical reduction key ↓ is input to vertically reduce the size of the OSD character after the character adjustment key is input, and a vertical reduction key ↓. Is entered, step 708 of reducing the size of the displayed character by 1V in the vertical direction, step 709 of storing the size of the character reduced in the vertical direction by 1V in the OSD control register, and 1V reduced in the vertical direction. Step 710 is used to determine whether the magnitude of V is a vertical reduction threshold provided by the OSD circuit 403. Likewise, if the vertical reduction limit is no longer vertically reduced.

In addition, the horizontal magnification process includes a step 711 of determining whether a horizontal magnification key ← is input to horizontally enlarge the size of an OSD character after the character adjustment key is input, and a horizontal magnification key ←. Is input, the size of the displayed character is expanded by one step in the horizontal direction (hereinafter, referred to as 1H in the horizontal direction as 1H.) And step 712, and the size of the character enlarged in the horizontal direction by 1H is stored in the OSD control register. Step 713 is performed, followed by step 714 for determining whether the size of the horizontally enlarged 1H character is the horizontal magnification limit provided by the OSD circuit 403. At this time, if the horizontal magnification limit value exceeds the size of the text provided by the OSD circuit 403 it can no longer be horizontally enlarged.

The horizontal reduction process may include determining whether a horizontal reduction key (→) is input to horizontally reduce the size of the OSD character after the character adjustment key is input, and a horizontal reduction key (→). Is input, the size of the displayed characters is reduced by 1H in the horizontal direction (716), the size of the characters reduced in the horizontal direction by 1H is stored in the OSD control register (717), and the horizontally reduced size of the characters by 1H is reduced. Step 718 determines whether the magnitude is the horizontal reduction threshold provided by the OSD circuit 403. Likewise, if the horizontal reduction limit is no longer horizontally reduced.

The adjusting character erase process may include: determining whether an erase key is input after the above processes are performed; and if the erase key is input, returning the size of the OSD character displayed on the screen to the original character size ( 720).

According to the present invention configured as described above, the size of the OSD characters is adjusted using the keypad 100 attached to the television and the remote controller 200 which is a remote control unit, and the size of the adjusted characters is stored and stored. By clearing the size of the text, you can restore the original, fixed state specified by the manufacturer. In this case, the signal of the remote controller 200 is provided to the microcomputer 400 through the remote controller receiver 300.

Meanwhile, the tuner 600 converts another high frequency into an intermediate frequency IF by mixing another high frequency with the high frequency tuned by the PLL data provided from the microcomputer among the high frequencies induced by the antenna ANT. Output to IC 700.

In addition, the intermediate frequency IC 700 amplifies the intermediate frequency provided by the tuner 600, and separates the video signal and the audio signal, and outputs the video signal to the video IC 800, and the audio signal is the audio IC 900. )

The intermediate frequency IC 700 outputs an automatic frequency control signal (AFC) to the microcomputer 400 so that when the oscillation frequency of a horizontal oscillation circuit (not shown) is higher than the horizontal synchronizing signal transmitted from the transmitter, This will lower the horizontal oscillation frequency and automatically raise it when the horizontal oscillation frequency is lowered so that the horizontal synchronization is always accurate.

The video IC 800 separates the R, G, and B signals from the video signal provided to the input side and outputs the R, G, and B signals to the RGB matrix IC 800, and the audio IC 900 outputs the audio signal provided to the input side. After amplification in the output through the speaker (SP).

At this time, the microcomputer 400 outputs an image control signal P'TL to the image IC 800 to control contrast, bright, color, tint, sharp, and the like, and outputs an audio control signal S'TL. Output to voice IC 900 to control volume, bath, travel, balance and the like.

Meanwhile, the RGB matrix IC 801 outputs from the image IC 800 when the color signal RGB and the luminance signal Y for the character data to be displayed in the OSD circuit 43 of the microcomputer 400 are provided. The mixed RGB signal is displayed on the CRT through the RGB driver 802.

Meanwhile, when the timer is on, the microcomputer 400 outputs a low signal to the base end of the display unit 500 to turn on the light emitting diode (LED), and when the timer is off, outputs a high signal to the light emitting diode ( Turn off the LED).

In this case, the operation of the microcomputer 400 for adjusting the OSD text size is described in detail as follows.

After the television is powered on, the OSD characters corresponding to the entered keys are displayed on the screen. For example, when a channel up / down key is input, a channel number is displayed, and when a volume up / down key is input, a volume up / down state is displayed on the screen. At this time, each displayed state is regarded as an independent mode.

Accordingly, when channel 9 is selected by the channel up / down keys provided in the key panel 100 or the remote controller 200, an OSD character indicating channel 9 is displayed on the screen as shown in FIG. .

At this time, when the character adjustment key is input by step 702, the direction keys (↑, ↓, ←, →) are set as keys for adjusting the size of the characters. In the present invention, the ↑ key is programmed to operate as a vertical zoom key, the ↓ key to a vertical zoom key, the ← key to a horizontal zoom key, and the → key to a horizontal zoom key. At this time, by pressing one of the direction keys once, it is enlarged or reduced in the vertical or horizontal direction by one step. Then, it is assumed that one vertical direction step provided by the OSD circuit 403 is 1V, one horizontal direction step is 1H, and the vertical magnification limit is 4V and the horizontal magnification limit is 4H. The vertical magnification limit and the horizontal magnification limit may vary depending on the OSD circuit used.

Then, if it is determined by step 703 that the vertical magnification key ↑ is input, step 704 is performed to enlarge 1V in the vertical direction as shown in FIG. 4B and step 705 is performed to control the OSD. The register stores the size of the OSD character, magnified 1V in the vertical direction. Step 706 is then performed to determine whether it is a vertical magnification limit. At this time, if the size of the character enlarged 1V in the vertical direction is determined as the vertical magnification limit supported by the OSD circuit, the character is no longer enlarged in the vertical direction no matter how much the vertical enlargement key ↑ is pressed.

That is, after the step 706 is performed, pressing the vertical enlargement key ↑ once more enlarges 3V as shown in FIG. 4c, and presses the vertical enlargement key ↑ once again as shown in FIG. As shown in FIG. 4, the fourth enlargement d is a vertical enlargement limit assumed in the present invention, and no further enlargement is performed in the vertical direction by the step 706 even if the vertical enlargement key ↑ is subsequently pressed.

On the other hand, if it is determined by step 707 that the vertical reduction key ↓ is input, step 708 is performed to enlarge the OSD text by 1V in the horizontal direction, and then step 709 is performed to reduce the 1V in the horizontal direction. The size of the OSD text is stored in the OSD control register.

At this time, when the vertical reduction key (↓) is input in the fourth drawing (d), it becomes as shown in FIG. 4 (c). When the vertical reduction key (↓) is input in FIG. 4 (b), the size of the reduced character is stored in the OSD control register after being as shown in FIG. 4 (a). In addition, when the vertical reduction key ↓ is input in FIG. 4 (a), it is determined as a vertical reduction limit value by step 710, so that it is no longer reduced in the horizontal direction.

At this time, if it is determined that the user pressed the erase key in step 719 to restore the size of the adjusted character to the original character size fixed by the manufacturer, step 720 is performed to determine the initial size determined by the manufacturer at the currently adjusted size. Return to position

That is, when the erase key is pressed in the state of being enlarged by 3V as shown in FIG. 4 (e), the controller returns to the initial position determined by the manufacturer as shown in FIG.

At this time, pressing the erase key without changing the size of the character invalidates the input of the erase key.

On the other hand, if the erase key is not input while the size of the character is changed, the channel number displayed by the channel selection is displayed with the changed character size until the erase key is input.

Therefore, if you want to erase the size of the adjusted text, you can enter the delete key in the relevant OSD mode.

Meanwhile, FIG. 5 illustrates an example of changing the size of the OSD text in the horizontal direction, and shows the OSD text displayed when the video is selected using the TV / video key provided in the keypad 100 or the remote controller 200. Giving.

At this time, if it is determined in step 711 that the horizontal magnification key ← is input in the initial size as shown in FIG. 5 (a) determined by the manufacturer, in step 712, in the horizontal direction as in FIG. 5 (b) Is enlarged by 1H and step 713 is performed to store the size of the enlarged character by 1H in the horizontal direction in the OSD control register.

At this time, when the horizontal enlargement key ← is input in FIG. 5 (b), the same as FIG. 5c, and when the horizontal enlarged key ← is input in FIG. 5c, FIG. ), Then the adjusted character size is stored in the OSD control register. When the horizontal magnification key ← is input in FIG. 5 (d), it is determined by the step 714 as the horizontal limit value defined in the present invention, and is no longer enlarged in the horizontal direction.

On the other hand, if it is determined by step 715 that the vertical reduction key (→) is input in FIG. 5 (d), step 716 is performed to reduce 1H in the horizontal direction as shown in FIG. ) Is executed to store the adjusted character size in the OSD control register.

At this time, when the horizontal reduction key (→) is input in FIG. 5 (c), the same as in FIG. 5 (b), and when the horizontal reduction key (→) is input in FIG. 5 (b), FIG. When the horizontal reduction key (→) is input in FIG. 5 (a), the horizontal reduction key (→) is invalidated by the step 718, and the horizontal reduction key (→) is invalidated, so that the horizontal reduction key (→) is no longer reduced. .

On the other hand, pressing the erase key in the state as shown in FIG. 5 (e) returns to the original font size determined by the manufacturer as shown in FIG. 5 (f), and when the erase key is input in the state as shown in FIG. Erasing key input is invalid.

In addition, the present invention can simultaneously enlarge and reduce the OSD characters in the horizontal / vertical direction by pressing the direction keys (↑, ↓, ←, →) alternately.

FIG. 6 shows an example of simultaneously changing the OSD text horizontally and vertically, and shows the OSD text displayed when the video is selected using the TV / video key provided in the keypad 100 or the remote controller 200. have.

In this case, FIG. 6 (a) shows the size of the initial OSD character determined by the manufacturer, and FIG. 6 (b) shows the OSD displayed when the vertical zoom-in key ↑ is pressed three times and the horizontal zoom-key ← is pressed twice. Shows the size of the text.

6 (c) shows the size of the OSD text that appears when the vertical zoom key (↑) and the horizontal zoom key (←) are pressed three times, respectively. FIG. 6 (d) shows the horizontal / vertical zoom defined in the present invention. The threshold value is the size of OSD text displayed when the vertical zoom key (↑) and horizontal zoom key (←) are pressed four times.

At this time, if you want to reduce the OSD text both horizontally and vertically, you can use the vertical zoom out key (↓) and the horizontal zoom out key (→).

6 (e) shows the size of the OSD character that appears when the vertical zoom-in key ↑ is pressed twice and the horizontal zoom-key ← is pressed three times. FIG. Pressing the erase key in e) returns the original character size specified by the manufacturer.

As described above, the present invention is easy to use because it enlarges the size of a character only in a desired time zone and returns to its original size immediately by using the erase key if it is not desired, and also operates only the corresponding mode independently in memory and erase. The text size can be saved and erased for each mode to satisfy the needs of many people. In addition, in the size change of characters, it is possible to enlarge only vertically from the current size, to enlarge only horizontally, and to configure various types of characters by simultaneously reducing and expanding horizontal / vertical, and hardware provided. As long as pure programs can be used to improve the function, the cost can be reduced.

Claims (5)

When a key is input from a keypad or a remote controller attached to the set while the power is turned on, the corresponding on-screen display character is displayed. The character adjustment is performed from the keypad or the remote controller while the OSD character corresponding to the key input is displayed. When the key is input, the initial process of setting the arrow keys (↑, ↓, ←, →) as the text size adjusting key so that the size of the OSD text can be changed, and the OSD circuit supports the OSD text displayed according to the input of the direction key. Zooming in and out to a selection size that simultaneously saves the size of the changed text after zooming in and out within the limit value, and simultaneously inputs the direction keys in the horizontal and vertical directions within the horizontal and vertical limits supported by the OSD circuit. The number of zooming in and out and storing the size of this changed character in the OSD control register. OSD character sizing and saving method consisting of vertical magnification and reduction, and an erased character erase process in which the clear key is entered to clear the size of the adjusted character and returns only the currently displayed mode to the original character size specified by the manufacturer. . The method of claim 1, wherein the expanding and contracting to the selection size comprises: when the vertical zooming key of the direction keys is input, the OSD text displayed within the vertical zooming limit supported by the OSD circuit in one vertical step and simultaneously expanding the OSD. OSD character size adjustment and storage method for storing the size of the OSD character enlarged by one step in the vertical direction in the control register. The method of claim 1, wherein the expanding and contracting to the selection size comprises: reducing the displayed OSD text by one step in the vertical direction within the vertical reduction limit supported by the OSD circuit when the vertical reduction key of the direction keys is input. OSD character size adjustment and storage method for storing the size of OSD characters reduced by one step vertically in the control register. The method of claim 1, wherein the expanding and contracting to the selection size comprises: when the horizontal zooming key of the direction keys is input, the OSD text displayed within the horizontal zoom limit supported by the OSD circuit is increased by one step in the horizontal direction and simultaneously OSD is displayed. OSD character size adjustment and storage method for storing the size of OSD character enlarged by 1 step horizontally in the control register. The method of claim 1, wherein the enlargement and reduction process to the selection size comprises: when the horizontal reduction key of the direction keys is input, the displayed OSD text within one horizontal reduction limit supported by the OSD circuit is reduced by one step in the horizontal direction and simultaneously OSD is displayed. OSD character size adjustment and storage method for storing OSD character size reduced by one step horizontally in the control register.