KR20110087002A - Method for displaying of image and system for displaying of image thereof - Google Patents

Abstract

PURPOSE: An image display method is provided to flexibly control a setting value of an audio or a set screen during the output of an image signal per frame. CONSTITUTION: An image display system receives HDMI packet data including image state information per frame of an image signal(310). The image display system adjusts the setup value per frame suitable for the image state information(320). By applying the adjusted setup value, the image display system displays the image signal(330).

Description

Image display method and corresponding image display system {METHOD FOR DISPLAYING OF IMAGE AND SYSTEM FOR DISPLAYING OF IMAGE THEREOF}

The present invention relates to an image display method and an image display system, and more particularly, to an image display capable of flexibly adjusting a setting value of a screen or audio set when an image signal is output according to a genre or a background environment of an image screen. It relates to a method and a video display system accordingly.

HDMI (High Definition Multimedia Interface) is a standard for performing data transmission and reception by connecting devices supporting the same through a single cable. According to the HDMI communication standard, high resolution video and multi-channel audio data are transmitted and received without compression through a digital interface.

Since HDMI transmits and receives data without compression, HDMI does not need to be encoded and then decoded. Accordingly, there is an advantage that a problem of deterioration in image quality of a video screen that may occur during encoding and decoding does not occur, and thus, it is widely used in a communication system for transmitting and receiving video data.

In addition, HDMI is a digital interface standard, and is mainly applied to a DVD player, a high definition television (HDTV), a digital set top box, and the like.

1 is a block diagram illustrating a general HDMI communication system.

Referring to FIG. 1, the HDMI communication system 100 includes an HDMI source block 110 and an HDMI sink block 120.

The HDMI source block 110 may be a DVD player or a digital TV receiver. The HDMI source block 110 transmits internally generated and input or externally input audio and video data or internally generated audio and video data in one direction through the HDMI cable 130.

The HDMI sink block 120 receives audio and video data transmitted in one direction from the HDMI source block 110 connected through the cable 130 through communication according to the HDMI standard, and displays it as a video image. Play the audio signal.

In such a communication system using HDMI, specific setting values of a display screen and an audio signal for displaying audio and video data transmitted from the HDMI source block 110 must be manually set by a user.

In addition, once the setting value is set, the user keeps the previous setting value unless the user adjusts or changes the value later.

Thus, even if the previous setting value is not suitable for the audio and video data currently being displayed, the previous setting value is maintained until the user resets. In addition, when the previous setting value is not suitable for the audio and video data currently being displayed, it is inconvenient that a user or the like must change the previous setting value by individually operating the communication system 100.

The present invention relates to an image display method and an image display system according to the above, and more particularly, an image display method and an image display according to which a setting value of a screen or audio set when an image signal is output can be flexibly adjusted for each frame. To provide a system.

Another object of the present invention is to provide an image display method capable of displaying an optimized image screen and reproducing an audio signal in consideration of a genre or a background environment of an image screen, and an image display system according thereto.

An image display method according to an embodiment of the present invention comprises the steps of receiving HDMI packet data including image state information for each frame of the image signal; Adjusting the set value of the video signal for each of the frames according to the video state information; And displaying the video signal by applying the adjusted setting value.

The image state information may include at least one of information of an image mode, an audio mode, and an aspect ratio set at the time of outputting the image signal, and is optimized according to a genre or a background environment of a screen corresponding to the image signal. It includes.

In addition, the image state information may be included in a vertical blank period in the HDMI packet data.

The image state information may be included in a data island section in the vertical blank section.

In addition, the image display method according to an embodiment of the present invention comprises the steps of storing the image state information in a storage; And generating the HDMI packet such that the stored image state information is included in the HDMI packet data.

In addition, the video state information may be provided from the HDMI packet provider for providing the video signal.

An image display system according to an embodiment of the present invention includes a source device and a sink device, and in an image display system for transmitting and receiving data using HDMI (HDMI) communication, the sink device may have an image state for each frame of an image signal. An HDMI sink interface unit receiving HDMI packet data including information; A microcomputer that adjusts a setting value of the video signal for each of the frames according to the video state information and controls the video signal to be displayed by applying the adjusted setting value; And a display unit for displaying the video signal.

The microcomputer may include a setting value adjusting unit for extracting the image state information from the HDMI packet data and adjusting the setting value by using the extracted image state information.

The source apparatus may further include a processor configured to generate the HDMI packet data including the image state information; And an HDMI source interface unit for transmitting the HDMI packet data to the HDMI sink interface unit.

An image display method and an image display system according to an embodiment of the present invention include image state information in HDMI packet data, and thus can flexibly adjust a setting value of a screen or audio set at the time of outputting an image signal every frame. have. Accordingly, the optimized video screen may be displayed in consideration of the genre or the background environment of the screen corresponding to the video signal.

In addition, the video display method and the video display system according to an embodiment of the present invention by adjusting the setting value of the screen or audio set at the time of output of the video signal for each frame, the image quality of the video screen and the reproduced audio The sound quality of the signal can be improved.

1 is a block diagram illustrating a general HDMI communication system.
2 is a block diagram illustrating a video display system according to an embodiment of the present invention using HDMI communication.
3 is a flowchart illustrating an image display method according to an embodiment of the present invention.
4 is a diagram illustrating an image display method and HDMI packet data used in the image display system according to an embodiment of the present invention.
FIG. 5 is a diagram illustrating image state information included in HDMI packet data of FIG. 4.
6 is a diagram illustrating frame data continuously input and displayed.
7 is a diagram illustrating image mode information that varies according to a genre or a background environment.
8 is a diagram illustrating voice mode information that varies according to a genre or a background environment.
9 is a diagram illustrating aspect ratios that vary according to a genre or a background environment.

The objects, features and advantages of the present invention will be more readily understood by reference to the accompanying drawings and the following detailed description. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the description thereof will be omitted.

2 is a block diagram illustrating a video display system according to an embodiment of the present invention using HDMI communication.

Referring to FIG. 2, an image display system 200 according to an exemplary embodiment of the present invention includes a source device 210 and a sink device 250. The source device 210 and the sink device 250 are physically connected through a connection device 290 made of a single cable line or the like.

The source device 210 includes a processor 220 and an HDMI source interface 230, and the sink device 250 includes an HDMI sink interface 260 and a microcomputer. (micom) 250 and display unit 280.

The source device 210 forms an audio or video signal in the form of HDMI packet data and provides it to the sink device 250 so that the transmitted audio or video signal can be displayed through the sink device 250. Here, the audio or video signal may be generated internally in the source device 210. Audio and video signals may also be input externally. Here, the audio and video signals may be referred to as image signals. That is, the processor 220 converts an internally or externally generated video signal according to the HDMI communication standard and transmits the converted video signal to the external sink device 120.

The source device 210 may include a set top box (STB), a digital TV receiver, a personal computer (PC), a video game system, a digital video disc (DVD) device, and a home. It may be a home theater system (HTS) or a video cassette recorder (VCR).

In detail, the processor 220 generates HDMI packet data including image state information. Here, the HDMI packet data is generated by using and converting an audio or video signal input internally or externally of the processor 220. Here, the HDMI packet data means a data stream conforming to the HDMI communication standard.

In addition, the processor 220 generates HDMI packet data so that the image state information is included for each HDMI packet data forming one frame.

Here, the image state information is set when outputting an image signal to be displayed. The image state information refers to state information of a screen corresponding to the image signal.

In detail, the image state information includes at least one or more information of an image mode, an audio mode, and an aspect ratio set when an image signal is output, and includes a setting value optimized according to a genre or a background environment of a screen corresponding to the image signal. do. That is, the image state information may include image mode and aspect ratio information as information related to a screen corresponding to the image signal, and include voice mode information as information related to audio corresponding to the image signal.

Since the image screen to be displayed is one frame (or one frame data), the image state information corresponding to the one frame is included in the HDMI packet data forming one frame.

In detail, the image mode information is information representing a corresponding genre or a specific background environment of a video screen such as a movie, a drama, a sports program, a daytime, a nighttime season (spring, summer, autumn, winter), an indoor, or an outdoor. Also, the image mode information may include detailed setting values related to the image mode, and the detailed setting values may include values such as contrast, brightness, color, tint, or sharpness.

The audio mode information is information representing a specific video screen genre or a specific audio related genre such as standard, game, music (rock, jazz, classic, ballad, etc.), war, or sports. Also, the voice mode information may include specific setting values related to the voice mode, and the detailed setting values may include a base, a treble, or a balance.

The aspect ratio information refers to a ratio of width to height of a screen to be displayed, and may be any one of values such as 16: 9, 14: 9, 4: 3, or 3: 2.

Information on the above-described image mode, audio mode, and aspect ratio will be described in detail below with reference to FIGS. 5 to 9.

The image state information may be provided from an HDMI packet provider that provides a video signal (audio and video data) capable of generating HDMI packet data.

For example, when the source device 210 is a set top box (STB), a broadcasting station or satellite transmits audio and video data, which is an image signal, to the source device 210, and the source device 210. Converts audio and video data transmitted from a broadcast or satellite according to the HDMI communication standard to generate and transmit HDMI packet data. In this case, the HDMI packet provider may be a broadcasting station or the like.

In addition, when the source device 210 is a digital video disk (DVD) device, the producer or producer of a digital video disk (DVD) for producing the digital video disk (DVD) may be an HDMI packet provider.

In addition, the processor 220 may store image state information provided by the HDMI packet provider in an internal storage unit (not shown), and the stored image state information is used to generate HDMI packet data.

The sink device 250 receives the HDMI packet data transmitted by the communication according to the HDMI standard, and displays an image screen according to the HDMI packet data. The audio signal according to the HDMI packet data may be reproduced through a speaker unit (not shown) provided internally. Here, the HDMI packet data is transmitted through the connection device 290.

The HDMI sink interface unit 260 is responsible for data transmission and reception between the source device 210 and the sink device 250. In detail, the HDMI sink interface unit 260 receives the HDMI packet data including the image state information and transmits the same to the microcomputer 270.

The microcomputer 270 adjusts the setting value set at the time of outputting the image signal in accordance with the image state information for each frame and controls the image screen to which the adjusted setting value is applied.

The microcomputer 270 may further include a setting value adjusting unit 272 internally. The setting value adjusting unit 272 extracts image state information from the received HDMI packet data, and adjusts a setting value for reproducing the image screen and the audio signal using the extracted image state information. Here, the setting values may be detailed setting values of the above-described image mode information, voice mode information, and aspect ratio information.

Here, the image state information is included in a vertical blank period in the HDMI packet data forming one frame. In detail, the image state information may be included in a data island period in a vertical blanking period. The location of including the image state information will be described in detail with reference to FIG. 4 below.

3 is a flowchart illustrating an image display method according to an embodiment of the present invention.

Referring to FIG. 3, the image display method according to an embodiment of the present invention receives HDMI packet data including image state information of an image signal to be displayed (step 310). Step 310 may be performed by the HDMI sink interface unit 260 described above. The HDMI packet data and the video state information will be described with reference to FIGS. 4 and 5 below.

4 is a diagram illustrating an image display method and HDMI packet data used in the image display system according to an embodiment of the present invention.

FIG. 5 is a diagram illustrating image state information included in HDMI packet data of FIG. 4.

Referring to FIG. 4, HDMI packet data having a data stream form are continuously generated to form a frame. 4 illustrates one frame made of HDMI packet data. In addition, FIG. 4 illustrates a case where the size of the displayed video screen is 720 * 480. That is, there are 480 data lines 412 in the vertical direction and 720 data lines 410 in the horizontal direction.

The HDMI packet data is transmitted in synchronization with a horizontal synchronization signal (HSYNC) and a vertical synchronizing signal (VSYNC). In addition, in order to form one frame, in addition to pure image data for generating an image screen, a horizontal blank area 420 in which various control signals for reproducing the image screen and a signal including audio information and various additional information are present. ) And a vertical blank area 422. Pure video data is placed in the area marked 'Active Video'.

The horizontal blank area 420 and the vertical blank area 422 include a control period and a data island period.

Here, the pure image data is disposed in the data period 450 and various control signals for reproducing the image screen are disposed in the control period 440. The voice information and various additional information are arranged in a data island period 430.

Here, the image state information is included in the vertical blank area 422. In detail, the image state information may be included in the data island section 430 in the vertical blank area 422. In the data island section 430, there is an extra storage space in which data is not stored, compared to the data section 450 or the control section 440. Therefore, when the image state information is included in the data island section 430, there is no need to additionally generate and arrange packet data.

Referring to FIG. 5, an image mode 510, an audio mode 520, and an aspect ratio 530, which are image state information, are included in a predetermined region of the data island section 430. In FIG. 5, an example in which an image state is disposed in an end region of the data island section 430 is illustrated.

According to the image state information, the setting values of the screen and audio set when the video signal is output are adjusted for each frame (step 320). Operation 320 may be performed by the microcomputer 270 described above. In detail, operation 320 may be performed by the setting value adjusting unit 272.

6 is a diagram illustrating frame data continuously input and displayed.

Referring to FIG. 6, frame data is continuously generated and transmitted. In FIG. 6, Frame-N frame data of 610 lines is first generated and transmitted, and frame data of 620 lines, 630 lines, and 640 lines is sequentially generated and transmitted. The frame data transmitted during the times t1 to t2 have detailed setting values of a movie mode, a voice mode, and an aspect ratio of movie, classic, and 16: 9, respectively. In addition, the frame data transmitted during the times t3 to t4 have detailed setting values of the video mode, the audio mode, and the aspect ratio of summer, sports, and 16: 9, respectively.

Here, the image state information includes screen setting values optimized according to the genre or the background environment of the image screen to be displayed. The optimized screen setting value will be described in detail with reference to FIGS. 7 to 9 below.

7 is a diagram illustrating image mode information that varies according to a genre or a background environment.

8 is a diagram illustrating voice mode information that varies according to a genre or a background environment.

9 is a diagram illustrating aspect ratios that vary according to a genre or a background environment.

Referring to FIG. 7, the image mode information has different optimal detailed setting values according to the genre or the background environment of the image screen to be displayed corresponding to the image signal. For example, if the genre of the video screen is a movie, the contrast has an optimal setting value of 80, brightness 75, color 50, tint 0, and clarity 50. The detailed setting values shown in FIG. 7 are shown by taking an example in which the range of setting values that can be expressed by the corresponding video display system is 0 to 100.

Referring to FIG. 8, the voice mode information has different optimal detailed setting values according to the genre or background environment of the video screen to be displayed and the reproduced voice signal. For example, if the genre is sport, the bass is 60, the treble is 90, and the balance has zero values. The detailed setting values shown in FIG. 8 are illustrated by taking an example in which the range of setting values that can be expressed by the corresponding video display system is 0 to 100.

Referring to FIG. 9, the aspect ratio information may have different optimal detailed setting values according to the genre or the background environment of the image screen to be displayed corresponding to the image signal. For example, when the genre of the video screen to be displayed is a movie, an aspect ratio value of 16: 9 becomes an optimal setting value, and an aspect ratio value of 14: 9 becomes an optimal setting value in the case of sports. When the background environment of the video screen to be displayed is indoors, an aspect ratio of 4: 3 becomes an optimal setting value.

In the video mode, audio mode, and aspect ratio information, an optimal detailed setting value may be provided by the HDMI packet provider as described above.

In addition, the image display method according to an embodiment of the present invention further includes the step of storing image state information and generating HDMI packet data so that the stored image state is included in the HDMI packet data before step 310. can do. Also, the image state information storing step and the HDMI packet data generating step may be performed by the processor 220.

Since the image display method according to the exemplary embodiment of the present invention described with reference to FIG. 3 has the same technical spirit and operation configuration as the image display system according to the exemplary embodiment of the present invention described with reference to FIG. 2, a detailed description thereof will be omitted.

On the other hand, the terms used in the present invention (terminology) are terms defined in consideration of functions in the present invention, which may vary according to the intention or custom of the skilled person in the relevant field, the definitions of which are used throughout the present invention. It should be based on.

The present invention is not limited to the above-described embodiments and may be variously modified and changed by those skilled in the art, which are included in the spirit and scope of the present invention as defined in the appended claims.

110: HDMI source block
120: HDMI sink block
210: source device
220: processor
230: HDMI source interface
250: sink device
260: HDMI sink interface
270: micom
272: setting value adjustment unit
280: display unit

Claims (15)

Receiving HDMI packet data including image state information for each frame of the image signal;
Adjusting the set value of the video signal for each of the frames according to the video state information; And
And displaying the video signal by applying the adjusted setting value. The method of claim 1, wherein the image state information is
At least one of information of a video mode, an audio mode, and an aspect ratio set at the time of outputting the video signal,
And a setting value optimized according to a genre or a background environment of a screen corresponding to the image signal. The method of claim 1, wherein the image state information is
The video display method, characterized in that included in the vertical blank period in the HDMI packet data. The method of claim 3, wherein the image state information is
And a data island section within the vertical blank section. The method of claim 1,
Storing the image state information in a storage unit; And
Generating the HDMI packet such that the stored image state information is included in the HDMI packet data. The method of claim 1, wherein the image state information is
And the HDMI packet provider providing the video signal. In the video display system including a source device and a sink device, and transmitting and receiving data using HDMI (HDMI) communication,
The sink device
An HDMI sink interface unit configured to receive HDMI packet data including image state information for each frame of the image signal;
A microcomputer that adjusts a setting value of the video signal for each of the frames according to the video state information and controls the video signal to be displayed by applying the adjusted setting value; And
And a display unit for displaying the video signal. The method of claim 7, wherein the image state information is
At least one information of an image mode, an audio mode, and an aspect ratio set when the image signal is output;
And a screen setting value optimized according to a genre or a background environment of a screen corresponding to the video signal. The method of claim 7, wherein the microcomputer
And a setting value adjusting unit which extracts the image state information from the HDMI packet data and adjusts the setting value using the extracted image state information. The method of claim 7, wherein the image state information is
And a vertical blank section in the HDMI packet data forming the frame. The method of claim 10, wherein the image state information is
And a video island section within the vertical blank section. 8. The apparatus of claim 7, wherein the source device is
A processor configured to generate the HDMI packet data including the image state information; And
And an HDMI source interface unit for transmitting the HDMI packet data to the HDMI sink interface unit. 13. The system of claim 12, wherein the processor is
And generating the HDMI packet data by including the image state information in a vertical blank section in the HDMI packet data forming the frame. 13. The system of claim 12, wherein the processor is
And a storage unit which stores image state information corresponding to the image screen to be displayed. The method of claim 12, wherein the image state information is
At least one information of an image mode, an audio mode, and an aspect ratio set when the image signal is output;
And a screen setting value optimized according to a genre or a background environment of a screen corresponding to the video signal.

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