KR100210773B1 - Control apparatus for displaying image screen block of tv - Google Patents

Abstract

The present invention relates to a video screen block display control apparatus of a television, comprising: a screen block position data storage unit (50) storing position data of a virtual horizontal / vertical split screen of a video screen displayed on a CRT apparatus; A remote controller 30 for setting a memory display function of a specific screen block among screens, a block position detection unit 32 for detecting position data of the screen block, and storing the screen block position data by the position data of the detected screen block CPU 34 which executes a memory display function by determining a horizontal / vertical position with respect to the screen block of the memory object in the unit 50, and the screen block under the control of the CPU 34 in the color signal sampled by the sampling unit. A screen block processing unit 44 for extracting the video signal data of the block; a block screen memory 52 for storing the video signal data for the screen block of the extracted memory object; The horizontal / vertical synchronization signals separated by the horizontal / vertical synchronization separators 40 and 42 from the image IF signal are counted so that the position determination of the screen block of the memory object by the CPU 34 is performed. And a synthesizing counter 46 and 48 and a screen synthesizing unit 54 for repeatedly synthesizing the video data of the screen block read out from the block screen memory at the screen position. The video signal of the screen block is repeatedly synthesized and displayed.

Description

Display screen control device of TV

The present invention relates to a video screen block display control apparatus of a television. More particularly, a video screen displayed on a CRT apparatus is divided into multiple screen blocks in a vertical / horizontal direction to store at least one divided screen area. A video screen block display control apparatus of a television for continuously displaying a screen.

In general, a television representing an image processing system reproduces and processes an external video signal transmitted from a broadcasting station and a wired video signal transmitted through a dedicated cable, or an external video signal applied from a video tape applied by a video tape recorder, for example. It has the function of displaying on the CRT device. The CRT device provided in the television acts to form a color screen by emitting an electron beam for the R / G / B color component of the video signal provided from the image processing system.

1 is a block diagram of a television for reproducing a general video signal, wherein reference numeral 10 denotes a remote controller for selectively setting the overall function of a corresponding television, and 12 is set by the remote controller 10. The control unit in charge of the execution of the function is shown, 14 represents an image IF processing module for converting the RF signal of the channel specified by the remote controller 10 to a predetermined intermediate frequency (IF), 16 is An image processing unit for reproducing the image IF signal PIF processed by the image IF processing module 14 under the control of the control unit 12, and 18 denotes an image signal reproduced by the image processing unit 16. Represents an image output unit to be output to be displayed on the CRT device 20, 22 is a screen guide for the control of the specific function set by the remote control unit 20 under the control of the control unit 12 An OSD processor which generates an OSD signal and applies it to the image processor 16.

Therefore, according to the television shown in FIG. 1, when tuning of a specific channel is performed by the remote controller 10, tuning data for a channel targeted for tuning is applied to a tuner (not shown) under the control of the control unit 12. Tuning for the channel is performed, and the OSD processing unit 22 generates an OSD signal for screen guidance of the channel to be tuned to and applies the OSD signal to the image processing unit 16.

Accordingly, the video signal of the channel tuned by the tuner is applied to the video IF processing module 14 to obtain the video IF signal PIF IF processed by the predetermined intermediate frequency signal, and the video IF signal PIF. ) Is applied to the image processor 16, the OSD signal processed by the OSD processor 22 is reproduced, and is applied to the image output unit 18, and the image output unit 18 receives the image processor. The video signal from 16 is outputted to the CRT apparatus 20 so as to be reproduced.

However, in the case of the television shown in Fig. 1, the video signal processed by the image processing unit 16 is repeatedly reproduced by the CRT apparatus 22 except for recording on a specific recording medium (e.g., video tape). Printing is impossible, and in particular, the continuous playback function for the particular screen block portion displayed on the CRT device 22 is not possible in the present television.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and divides the video screen displayed on the CRT apparatus into a plurality of screen blocks so that video signals of a specific screen block among the plurality of screen blocks can be continuously reproduced by memory. It is an object of the present invention to provide a video screen block display control apparatus for a television.

In order to achieve the above object, according to a preferred embodiment of the present invention, in a television for processing a color signal and a luminance signal separated by a luminance / color signal separation unit from an image IF signal to be displayed on a CRT apparatus, A remote control for setting a memory display function for a specific screen block of the virtual horizontal / vertical divided video screen and a screen block position data storage unit for storing position data of the virtual horizontal / vertical divided screen of the displayed video screen; A block position detection unit for detecting position data of a screen block of interest; the screen block position data storage unit determines a horizontal / vertical position of the screen block of the memory object based on the detected position data of the screen block; CPU executing the function, specified under the control of the CPU in the color signal sampled by the sampling unit A screen block processing unit for extracting the image signal data of the screen block to be stored; a block screen memory for storing the image signal data of the screen block of the memory object extracted by the screen block processing unit; and a horizontal / vertical synchronization separator from the image IF signal A horizontal / vertical sync counter that counts the horizontal / vertical sync signals separated by and applies the count result to the CPU to determine the position of the screen block of the memory object, and the screen block read from the block screen memory. And a screen synthesizing unit for repeatedly synthesizing image data at the screen position. The remote controller is provided with a button for setting / releasing the memory display function, and selectively setting a screen block for the memory object. Display screen control device of television equipped with 10-key Is provided.

According to the video screen block display control apparatus of the television according to the present invention having the above-described configuration, when a specific screen block is designated while the video screen displayed on the CRT device is divided into a plurality of screen blocks, the video of the screen block is displayed. It is digitally converted and stored in memory so that the screen block can be displayed continuously.

1 is a block diagram of a television for reproducing a general video signal;

2 is a block diagram of a video screen block display control apparatus for a television according to a preferred embodiment of the present invention;

3 is a flowchart for explaining the operation of the video screen block display control apparatus of the television according to the present invention;

4 is a view referred to for explaining the operation of the video screen block display control apparatus of a television according to the present invention.

* Description of the symbols for the main parts of the drawings *

10,30: remote control, 12: control unit,

14: image IF processing module, 16: image processing unit,

18: video output unit, 36: luminance / color signal separation unit,

38: sampling section, 40: horizontal synchronous separation section,

42: vertical synchronization separator, 44: screen block processing,

46: horizontal synchronous counter, 48: vertical synchronous counter,

50: screen block position data storage, 52: block screen memory,

54: screen synthesis unit.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail.

2 is a block diagram of a video screen block display control apparatus of a television according to the present invention. In the figure, reference numeral 30 denotes a remote control for selectively setting the overall function of the corresponding television, and the remote control 30 is a button 30a for setting a memory display function for a specific screen block assumed in the present invention. And a 10-key 30b for specifying the screen block on the CRT apparatus that is virtually divided in the state where the memory display function is set by the button 30a. 32 is a block position for detecting the horizontal / vertical position of the designated screen block when a specific screen block is designated by the 10-key 30b while the memory display function is set by the button 30a of the remote controller 30; The detection part is shown. 34 denotes a memory display function set by buttons 30a and 10-keys 30b of the remote control 30 while controlling the execution of the function of the television set by the remote control 30, and a specific screen block is designated. And a control unit for controlling the memory display function of the screen block based on the position signal for the specific screen block detected by the block position detection unit 32.

In FIG. 2, reference numeral 36 denotes a luminance / color signal separation that receives an image IF signal PIF processed by the IF conversion unit ('14 in FIG. 1) and separates the luminance signal Y and the color signal C. 38 denotes a sampling unit which performs sampling processing on a specific screen block by the 10-key 30b of the remote controller 30 under the control of the controller 32, and 40 denotes the image IF signal PIF. Denotes a horizontal synchronous separator 40 that separates the horizontal synchronous signal, and 42 denotes a vertical synchronous separator that separates the vertical synchronous signal from the image IF signal PIF.

Also, reference numeral 44 denotes a block screen in the horizontal / vertical direction based on the position data BSC provided from the CPU 34 to the image signal (ie, color signal) sampled by the sampling unit 38. A screen division processing unit for virtual division is shown, and the screen block processing unit 44 includes first to third screen block extractors 44a to 44c for extracting only the screen block designated by the CPU 34. . 46 denotes a horizontal synchronous counter for counting the horizontal synchronous signal separated in the horizontal synchronous separator 40, and 48 denotes a vertical synchronous counter for counting the vertical synchronous signal separated in the vertical synchronous separator 42. Indicates.

In addition, 50 denotes a screen block position data storage unit which stores position data of a virtual screen block displayed on the CRT apparatus, and 52 denotes a write / read control signal (R / W ') provided from the CPU 34. In response to the block picture memory, a block picture memory capable of repeatedly outputting video signal data for a specific picture block is indicated. 54 denotes block picture data repeatedly reproduced in the block picture memory 54, luminance signal (Y), and color signal (C). Represents a screen synthesizing unit for synthesizing a screen for receiving only the block screen data and reproducing the same.

Next, the operation of the video screen block display control apparatus of the television according to the present invention having the above-described configuration will be described in detail with reference to FIGS. 3 and 4.

First, according to the present invention, the video screen displayed on the CRT apparatus is virtually divided into a plurality of screen blocks in a horizontal / vertical direction in the form shown in FIG. 4 (a), and the screen block position data storage unit 50 includes the image screen. Position data based on horizontal / vertical synchronization signals for a plurality of screen blocks is stored.

In this state, when the corresponding television is operated by the remote controller 30, a video screen (22 in Fig. 4) is displayed on the CRT device, and the CPU 32 is operated by the remote controller during operation of the television. It is determined whether or not the block screen memory display function is set by the operation of the button 30a provided on (30). As a result of the determination, the CPU 34 returns to the first step and repeats the subsequent process when the block screen memory display function is not set, while the block screen memory is operated by operation of the button 30a in step 62 above. If the display function is set, a specific screen block designation (for example, the screen block 'P1' shown in FIG. 4) is received from the 10-key 30b of the remote controller 30 in step 64.

Then, the position for the designation of the specific screen block 'P1' (that is, the signal of the manipulated number among '1' through '9' of the 10-key) is determined from the block position detecting unit 32 and the CPU 34 The CPU 34 performs the memory processing on the block screen image signal of the memory object in step 66, and the CPU 34 performs the horizontal / vertical operation of the designated screen block 'P1'. The position data is read from the screen block position data storage unit 50.

In addition, the image IF signal is separated into a color signal C and a luminance signal Y by the luminance / color signal separation unit 36, and the color signal is applied to the sampling unit 38 and sequentially sampled. It is applied to the screen block processor 44.

In addition, the image IF signal PIF is applied to the horizontal synchronous separator 40 and the vertical synchronous separator 42 so that the horizontal synchronous signal and the vertical synchronous signal are separated, and the separated horizontal synchronous signal and the vertical synchronous signal are separated. Is applied to the corresponding horizontal synchronous counter 46 and vertical synchronous counter 48 and counted, and the counting result of the horizontal / vertical synchronous signal counted at each horizontal synchronous counter 46 and vertical synchronous counter 48 (Hc / Vc) is applied to the CPU 34.

Here, according to the present invention, the CPU 34 judges the count result Hc from the horizontal synchronous counter 46 as the three divided position data 1H-3H illustrated in FIG. In addition to determining the horizontal position section 1H of the screen block 'P1' specified by (30), the count result Vc from the vertical synchronization counter 48 is divided into three segments illustrated in (c) of FIG. Judging from the position data, the vertical position section 1V of the screen block 'P1' designated by the remote controller 30 is determined.

At this time, an image signal (color signal) sampled by the sampling unit 48 and applied to the screen block processing unit 44 corresponds to the first to third screens corresponding to the horizontal / vertical direction of the screen block processing unit 44. The CPU 34 is applied to the block extractor 44, and the CPU 34 determines the designated screen block determined based on the horizontal / vertical synchronous count result Hc / Vc among the first to third screen block extractors 44. A first screen block extractor 44 corresponding to 'P1' is designated and a write control signal W 'is applied to the block screen memory 52.

Therefore, the video signal extracted by the first screen block extractor 44 is stored in the block screen memory 52 and applied to the repetitive playback process for the screen block 'P1'.

That is, the CPU 34 is counted by the horizontal synchronous counter 40 and the vertical synchronous counter 42 when the memory block screen display function is set by the button 30a of the remote controller 30 in step 68. An image of the block screen 'P1', which is extracted from the first block screen extractor 44a and stored in the block screen memory 52, with the subsequent video signal corresponding to the position of the block screen 'P1' in a horizontal / vertical synchronization signal. A read control signal R is applied to the block screen memory 52 so as to be replaced by a signal, so that the image signal data of the block screen 'P1' read out from the block screen memory 52 is stored in the screen synthesizer. Is applied to 54.

Therefore, the screen synthesizing section 54 is located at the position of the designated block screen 'P1' based on the original color signal C and the luminance signal Y, which are separated and applied by the luminance / color signal separation section 36. The video signal data read out from the block screen memory 52 is processed to be repeatedly inserted to form one field (or one frame) screen and output to be post-processed.

While the block screen memory display function is being executed, the CPU 34 judges whether or not the block screen memory display function is canceled by reoperation of the button 30a provided in the remote controller 30, and displays the block screen memory display. If the function is not released, the process proceeds to step 72 in which it is determined whether or not the change specification of the memory target block screen is performed. If the determination is not made, the process returns to step 68 and advances. While the memory display function of the screen block 'P1' designated as is continued, when the memory target block screen is changed as a result of the determination, the CPU 34 returns to step 64 to select " 10 " Even if the screen block selected by the key 30b is determined and the above-described process is performed, the memory display function for the selected screen block is performed. It is.

As described above, according to the video screen block display control apparatus of the television according to the present invention, when a particular screen block is designated in a state in which the video screen displayed on the CRT device is virtually divided in the horizontal / vertical direction, the screen is designated. By judging the position of the block and only displaying the screen block repeatedly, it is possible to improve the viewer's perception of the specific screen part, and thus the visual perception of the television is remarkably improved, so that the information transmission effect can be further improved. do.

Claims (2)

In a television which processes a color signal and a luminance signal separated by the luminance / color signal separation unit 36 from an image IF signal to be displayed on a CRT apparatus, A screen block position data storage unit 50 storing position data of a virtual horizontal / vertical split screen of an image screen displayed on the CRT device; A remote controller 30 for setting a memory display function for a specific screen block of the virtual horizontal / vertically divided video screen; A block position detector 32 for detecting position data of the screen block of the memory object; A CPU 34 which executes a memory display function by determining the horizontal / vertical position with respect to the screen block of the memory object by the screen block position data storage unit 50 based on the detected position data of the screen block; A screen block processing unit 44 for extracting image signal data of a screen block designated under the control of the CPU 34 from the color signal sampled by the sampling unit; A block screen memory 52 for storing image signal data of the screen block of the memory object extracted by the screen block processor 44; The horizontal / vertical sync signal separated by the horizontal / vertical sync separators 40 and 42 is counted from the image IF signal, and the count result is applied to the CPU 34 to determine the position of the screen block of the memory object. Horizontal / vertical synchronous counters 46 and 48, And a screen synthesizing unit (54) for repeatedly synthesizing the video data of the screen block read out from the block screen memory at the screen position thereof. 2. The remote control unit (30) according to claim 1, wherein the remote controller (30) is provided with a button (30a) for setting / cancelling the memory display function, and a 10-key (30b) for selectively setting the screen block of the memory object. Display apparatus for controlling the video screen block of the television, characterized in that it is provided.

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