KR19980040485A - Image Control Device by Comparison of Image Control Values of Multi-Screen Television - Google Patents

Abstract

According to the present invention, a plurality of preset image adjustment values are individually adjusted for each multi-screen in a state in which a broadcast program of the same channel is being reproduced by executing an adjustment value comparison mode during multi-screen playback through a multi-screen television. The present invention provides an image adjusting device by comparing image adjustment values of a multi-screen television that can be selected by comparison.

Accordingly, in the present invention, when a plurality of channels are tuned through the first and second tuning means 4, 6, 8, and 10, the first image processing is performed by executing the mode of the image mode switch unit 12 to the two-screen playback mode. Simultaneous playback as two screens through the two-screen designation operation of the screen positioning unit 22 through the individual video processing of the video signal of each channel by the means 14, 18 and the second video processing means 16, 20. In a multi-screen television capable of performing, function setting means 26 for executing an adjustment value comparison mode with respect to a video signal to compare and execute a plurality of video adjustment values to perform key input for selecting an optimum video adjustment value; The first and second tuning means 4, 6, 8, and 10 tune to the same channel by allowing the broadcast program of the same channel to be simultaneously reproduced on two screens by the execution of the adjustment value comparison mode according to (26). Each screen is adjusted according to the multiple image adjustment values. Control means 32 for controlling to adjust the image individually, for controlling the reproduction of the image to the image adjustment value selected by the key input of the function setting means 26, and in the adjustment value comparison mode for the plurality of image adjustment values. Control data memory 28 storing control program data for execution control, data storage means 30 storing a plurality of image adjustment values set by a user for a plurality of image adjustment items, and control of the control means 32 And display signal processing means (34, 36) for generating display information for displaying the state of the image adjusted with the individual image adjustment values for each of the multiple screens according to the adjustment value comparison mode. .

Description

Image control device by comparing video adjustment values of multi-screen television

The present invention relates to an image adjusting device by comparing image adjustment values of a multi-screen television. More particularly, a plurality of preset image adjustment values are the same channel in a multi-screen television in which a multi-channel television program is simultaneously reproduced on two screens. The present invention relates to an image adjusting device by comparing image adjustment values of a multi-screen television, which enables individual adjustments for multiple screens simultaneously playing television broadcasts.

Conventionally, in a conventional television, a composite video is processed as a result of processing a video signal and an audio signal by tuning a desired single channel television broadcast signal from a plurality of television broadcast signals transmitted from a plurality of television stations through a single tuner. Since the signal is output through the CRT (Cathode Ray Tube) device that reproduces one screen, and the audio signal is output through the speaker that reproduces the sound of a single channel, If you can not watch the current TV channels were supposed to be.

Therefore, in order to solve such disadvantages, there is a PIP (Picture In Picture) function that allows a sub-screen consisting of multiple screens to be inserted on the main screen (main screen) reproduced in one CRT device. As it has been adopted, multiple TVs equipped with such PIP function can be tuned to multiple channels of TV broadcast signals through the built-in tuner, so that images can be output through each designated screen. A multi-screen playback function, such as a two-screen playback function, which divides the main screen into predetermined screen areas so that television broadcast programs of different channels can be played back simultaneously, is also employed.

Accordingly, through the main / sub picture reproduction function of the multi-screen television, simultaneous channel selection is performed for the multi-channel broadcast program, and thus screen reproduction can be performed simultaneously, thereby providing time / space for the plurality of broadcast channels. It is possible to achieve simultaneous concurrency.

In addition, in such a multi-screen television, image adjustment items of video analog levels such as contrast, brightness, color level, and the like, for the video signals according to the selected channel's television broadcasting are individually selected. It is provided with a video adjustment function that can be set and stored as a plurality of video adjustment values, so that the adjustment level of the video signal can be variously adjusted by the user's arbitrary selection of a predetermined adjustment value.

However, in the video adjustment function for arbitrarily selecting a plurality of video adjustment values, among the video adjustment values set individually for each video adjustment item, it is optimal according to the channel characteristics, program characteristics, or viewing time of the broadcast program. In order to select an image adjustment value, it is difficult to visually determine whether the optimum adjustment value is performed by executing each image adjustment value individually, and it is difficult to easily determine whether the determined image adjustment value is an optimal adjustment value objectively. There is a ham.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and a plurality of video adjustment values set in advance in a state in which a broadcast program of the same channel is reproduced by executing an adjustment value comparison mode during multi-screen playback through a multi-screen television It is an object of the present invention to provide an image adjusting device by comparing image adjustment values of a multi-screen television that allows individual adjustments to visually compare the image adjustment states and to select the images.

In order to achieve the above object, according to the image adjusting apparatus by comparing the image adjustment values of the multi-screen television according to the present invention, when multiple channels are tuned through the first and second tuning means, the image mode switch unit enters the two-screen playback mode. A multi-screen television that can be simultaneously reproduced as two screens through the two-screen designation operation of the screen positioning unit after the individual image processing of the video signal of each channel by the first image processing means and the second image processing means through the execution of the mode. A function setting means for executing an adjustment value comparison mode with respect to a video signal to compare and execute a plurality of video adjustment values to perform key input for selecting an optimal video adjustment value, and the adjustment value comparison mode by the function setting means. The first and second channel selection means selects the same channel, respectively, by simultaneously executing broadcast programs of the same channel on two screens. Control means for controlling each image to be individually adjusted according to a plurality of image adjustment values, and controlling playback of the image to an image adjustment value selected by a key input of the function setting means; A control data memory storing control program data for execution control of the adjustment value comparison mode for stationary, data storage means storing a plurality of image adjustment values set by a user for a plurality of image adjustment items, and control of the control means. By the display signal processing means for generating display information for displaying the state of the image adjusted to the individual image adjustment values for each of the multiple screens according to the adjustment value comparison mode. Provide an image adjusting device.

According to the present invention configured as described above, in a multi-screen television capable of simultaneously playing back multiple channels through two screens, a plurality of video adjustment values are displayed on two screens while simultaneously playing back broadcast programs of the same channel through two screens. By allowing each image to be adjusted and played back individually, it is possible to select a predetermined image adjustment value as an optimum adjustment value by the user's selection.

1 is a block diagram showing an image adjusting apparatus by comparing image adjustment values of a multi-screen television according to the present invention;

FIG. 2 is a view showing an example in which each image adjustment value is displayed on a screen comparably through multiple screens according to an adjustment value comparison mode according to a preferred embodiment of the present invention;

3 is a flowchart illustrating the operation according to the preferred embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

2: receiving antenna, 4, 6: tuner,

8, 10: video IF section, 12: video mode switch section,

14, 16: image amplification unit, 18, 20: image processing unit,

22: screen position indicator, 24: video output unit,

26: function setting section, 28: control data memory,

30: data storage, 32: control,

34: OSD signal processor, 36: signal converter.

Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing an apparatus for adjusting an image by comparing image adjustment values of a multi-screen television according to the present invention. In the apparatus of the present invention, reference numeral 4 selects one channel from the control unit 32, which will be described later. 6 shows a first tuner which receives the channel tuning data VT1 for tuning and tunes the corresponding channel and mixes it with the local oscillation frequency signal generated from the channel tuning data VT1 and outputs it as an intermediate frequency signal. An intermediate frequency is obtained by receiving channel tuning data VT2 for tuning another channel from the control unit 32 to be described later, and mixing the corresponding channel with a local oscillation frequency signal generated from the channel tuning data VT2. A second tuner output as a signal is shown.

Further, reference numeral 8 denotes a first video IF unit for intermediate-frequency amplifying the television broadcast signal tuned through the first tuner 4, and 10 denotes an intermediate portion of the television broadcast signal tuned through the second tuner 6; A frequency amplified second image IF part is shown.

Also, reference numeral 12 denotes an image which is switched and switched so that the video signals according to the selected multi-channel television broadcasting are individually processed by the control unit 32, which will be described later. The mode switch section is shown.

Reference numeral 14 denotes an image amplifier which amplifies the video signal of the intermediate frequency-amplified one channel to an amplification level capable of signal processing, and 16 denotes an image amplification level of the video signal of the other intermediate amplified channel to a signal processing amplification level. Signal amplification represents an image amplifier.

Also, reference numeral 18 separates the video signal according to the signal-amplified one channel into a luminance signal and a color difference signal to perform luminance adjustment processing and color demodulation processing, and the contrast, brightness and color amount from the controller 32 to be described later. The composite image signal is synthesized and output through the adjustment of the image analog level through the first image adjustment control signal VC1 for adjustment, and the OSD display signal from the OSD signal processor 34 to be described later is output to the composite image. A first image processing unit inserted into a signal and outputting the signal, and 20 denotes a control unit 32 which performs brightness adjustment processing and color demodulation processing by separating a video signal according to the other signal-amplified channel into a brightness signal and a color difference signal. Through the operation of adjusting the video analog level by the second video adjustment control signal VC2 from < Desc / Clms Page number 5 > An OSD display signal from the processing unit 34 indicates a second image processing unit for outputting the composite video signal by insertion.

Also, reference numeral 22 denotes a screen reproduction area for a composite video signal of one channel and another channel through the first and second image processing units 18 and 20 according to execution of the multi-screen reproduction mode of the controller 32 described later. 24 denotes an image output unit which amplifies each composite video signal to which the screen reproduction area is designated and performs horizontal / vertical deflection driving so as to simultaneously output through the CRT.

Reference numeral 26 denotes a matrix button portion provided in a remote control unit for remote control or a predetermined portion of the control panel of the main body, and performs a key input for execution of an adjustment value comparison mode for comparing adjustment states for a plurality of image adjustment values. An execution key 26A, a selection key 26B for selecting a plurality of video adjustment values, and a setting key 26C for setting a video adjustment state of a video signal according to the selected video adjustment value.

Further, reference numeral 28 denotes a control data memory in which control program data for execution control of the adjustment value comparison mode for comparing the video adjustment states of the plurality of video adjustment values is stored, and 30 denotes contrast and brightness for a plurality of broadcast channels. Represents a data storage unit in which a plurality of image adjustment values, such as standard adjustment values for which varnish and color amounts are respectively set separately and a plurality of user adjustment values preset by the user, are stored.

Further, reference numeral 32 denotes that the television broadcast of the same channel is tuned through the first and second tuners 4 and 6 when the adjustment value comparison mode is executed by the key input of the function setting section 26. In addition to switching and controlling the image mode switch unit 12 according to the multi-screen playback mode, the two screens to be reproduced in accordance with the image adjustment value selected by the function setting unit 26 are respectively used as image adjustment values. When the first and second image control signals VC1 and VC2 are generated to allow the level to be adjusted, and the optimum image adjustment value is designated by the function setting unit 26, execution of the multi-screen playback mode is stopped. And a control unit for controlling the screen to be reproduced by the designated image adjustment value according to the single screen playback function.

Also, reference numeral 34 denotes an OSD signal for generating OSD display information for displaying a state in which image adjustment values are individually applied to two screens simultaneously reproduced according to the multi-screen playback mode by the display control of the controller 32. Reference numeral 36 denotes a signal converter which converts the generated OSD display information data into analog and outputs the first and second image processors 18 and 20, respectively.

Here, the OSD signal processor 34 displays the standard adjustment value as shown in FIG. 2 when the adjustment value comparison mode for the standard adjustment value for the corresponding channel and the second user adjustment value set by the user is executed. The character 38 is displayed on the screen, and the adjustment item 42 for the standard adjustment value is displayed on one screen (i.e., the screen to which the standard adjustment value is applied) and the second user adjustment value is displayed. The display character 40 is displayed on the screen, and the adjustment item 44 for the user adjustment value is displayed on the other screen (that is, the screen to which the corresponding second user adjustment value is applied).

Next, the operation of the present invention made as described above will be described in detail with reference to the flowchart of FIG. 3.

First, in step 50, a predetermined function key of the function setting unit 26 is keyed so that a plurality of image adjustment values individually set for image adjustment items such as contrast, brightness and color amount of the image signal are stored in the data storage unit ( In addition to the data storage 30, a standard adjustment value in which image adjustment items are set differently for a plurality of tuneable broadcast channels is stored in the data storage unit 30.

Subsequently, the process proceeds to step 51 and the single channel is tuned through the first tuner 4 and the image signal is processed, and then the image is reproduced through the single screen. It is judged whether or not the mode execution key 26A of the setting unit 26 is keyed to execute the adjustment value comparison mode for comparing the adjustment states for the plurality of image adjustment values.

As a result of the determination in step 52, when it is determined that the mode execution key 26A of the function setting unit 26 is being operated for the execution of the adjustment value comparison mode, the control proceeds to step 53 and the station has been selected in step 51. The television broadcasting of a predetermined channel is simultaneously tuned through the first and second tuners 4 and 6, and the image mode switch unit 12 is switched according to the multi-screen playback mode. If, for example, the standard adjustment value and the second user adjustment value for the corresponding channel are selected by the key operation of the selection key 26B and the setting key 26C, the data is transmitted to the first and second image processing units 18 and 20. Two images which are simultaneously reproduced by generating the first and second image control signals VC1 and VC2 according to the standard adjustment values stored in the storage unit 30 and the second user adjustment values, respectively, are individually set. Adjust the picture analog level In addition, the OSD signal processor 34 controls the display character 38 indicating the standard adjustment value applied to one screen and the adjustment item 42 of the standard adjustment value as shown in FIG. The display character 40 representing the second user adjustment value applied to the other side screen and the adjustment item 44 of the second user adjustment value are displayed on the screen.

At this time, due to repetitive key input of the selection key 26B and the setting key 26C of the function setting section 26, another adjustment value among the plurality of adjustment values replaces the standard adjustment value and the second user adjustment value, respectively. It is replaced and applicable for the screen of.

Subsequently, the flow advances to step 54, and the control unit 32 selects a predetermined screen from among the two screens adjusted by respective image adjustment values by the selection key 26B and the setting key 26C of the function setting unit 26, respectively. It is determined whether or not key input for selecting is performed.

As a result of the determination in step 54, if it is determined that the predetermined screen is selected by the key input of the function setting unit 26, the control proceeds to step 55 to release the multi-screen playback mode and The television broadcast program of the corresponding channel tuned through the one tuner 4 is reproduced as a single screen, and the image analog level is adjusted and reproduced by the image adjustment value applied to the selected screen.

According to the present invention made as described above, in the multi-screen television capable of two-screen playback, a plurality of video adjustment values are adjusted simultaneously through two screens so that an optimal video adjustment value can be selected. This has the advantage that the image adjustment value can be judged and selected more objectively.

Claims (3)

When a plurality of channels are tuned through the first and second tuning means 4, 6, 8, and 10, the first image processing means 14, 18 is executed by executing the mode of the video mode switch unit 12 to the two-screen playback mode. And multi-screen television capable of simultaneously playing back as two screens through the two-screen designation operation of the screen positioning unit 22 through the individual video processing of the video signals of each channel by the second video processing means 16 and 20. In Function setting means (26) for executing an adjustment value comparison mode for a video signal to compare and execute a plurality of video adjustment values to perform key input for selecting an optimum video adjustment value; The first and second tuning means 4, 6, 8, and 10 respectively transmit the broadcast program of the same channel on the two screens by executing the adjustment value comparison mode by the function setting means 26, respectively. Control to tune the same channel so that each screen is individually adjusted according to a plurality of video adjustment values, and control to play the video at the video adjustment value selected by the key input of the function setting means 26. Means 32, A control data memory 28 in which control program data for execution control of an adjustment value comparison mode for a plurality of image adjustment values is stored; Data storage means (30) storing a plurality of image adjustment values set by a user for a plurality of image adjustment items; Display signal processing means (34, 36) for generating display information for displaying the state of the image adjustment with the individual image adjustment values for each of the multiple screens according to the adjustment value comparison mode by the control of the control means (32) And a video adjusting device by comparing the video adjusting values of the multi-screen television. The method according to claim 1, wherein the plurality of video adjustment values stored in the data storage means (30) is a standard adjustment value for which the video adjustment items are differentially set for each broadcasting channel and a user adjustment for which the video adjustment items are individually set by the user. And an image adjusting device by comparing the image adjusting values of the multi-screen television. The apparatus of claim 1, wherein the image adjustment items individually adjusted according to the plurality of image adjustment values comprise contrast, brightness, and color amount.