KR100752838B1 - Digital broadcast record/play device offering partial area of sub picture to main picture and method thereof - Google Patents

Abstract

The present invention provides a multi-screen function and a split ratio setting function on a digital broadcast recording / playback apparatus, wherein any one of the detailed areas of the screen displayed on the sub-screen is selected and the selected area is enlarged and displayed on the main screen. A digital broadcast recording and reproducing apparatus.

According to an aspect of the present invention, there is provided a digital broadcast recording and reproducing apparatus for providing a partial region of a sub-screen as a main screen, including: a sub-screen reproducing unit for reproducing image data transmitted by an image input path according to position / size information of a sub-screen; A main screen reproducing unit for reproducing the image data transmitted by the video input path to the main screen; The sub-screen is divided into a plurality of sub-regions to detect the position and size of each sub-region, and when one sub-region is selected, the position and size of the selected sub-region are converted to match the main screen, and the main screen playback unit A controller for switching image input paths so that image data of the converted partial region is reproduced; An interface unit which receives the partial region and transmits selection information to the controller; And an OSD processing unit which displays the partial area on the sub-screen and moves / displays the selection area so that the partial area is selected through the interface unit.

Description

Digital broadcast recording / playback device and method for providing partial area of sub-screen as main screen {Digital broadcast record / play device offering partial area of sub picture to main picture and method

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram schematically illustrating the components of a digital broadcast recording / reproducing apparatus for providing a partial area of a sub picture as a main picture according to an embodiment of the present invention.

FIG. 2 is a block diagram schematically illustrating components of a video unit included in a digital broadcasting recording and reproducing apparatus for providing a partial region of a sub-screen as a main screen according to an embodiment of the present invention. FIG.

3 is a diagram illustrating a screen in which an OSD processing module displays partial regions on a sub-screen according to an embodiment of the present invention.

4 and 5 illustrate screens when the digital broadcasting recording and reproducing apparatus according to the present invention enlarges and displays a partial region selected on a sub-screen on the main screen.

6 is a flowchart illustrating a method of providing a partial region as a main screen on a digital broadcast recording / reproducing apparatus according to an embodiment of the present invention.

<Explanation of symbols for main parts of drawing>

100: digital broadcast recording and playback apparatus providing a partial region of a sub-screen as a main screen

140: video unit 141: sub-screen playback module

142: main screen playback module 143: video input initialization module

144: preprocessing module 145: buffer mode processing module

146: partial area detection module 147: partial area conversion module

148: image input processing module 149: OSD processing module

The present invention relates to a processing and method of image data reproduced between a main screen and a sub-screen of a digital broadcasting recording and reproducing apparatus.

Recently, many products incorporating mass storage means such as HDD (Hard Disc Driver) or DVD (Digital Versatile Disc) devices into home appliances have been developed. As described above, a digital broadcast recording / playback device such as a high definition TV (HDTV) or a set-top box (STB) having a mass storage means has a tuner connected to a receiving terminal so that a user can watch a specific channel to be watched.

The digital broadcasting recording and reproducing apparatus having such a mass storage means can receive and reproduce analog broadcasting and recording of digital broadcasting, as well as receive and play a signal transmitted from satellite, and compress a digital broadcasting or analog audio / video signal into a compressed digital signal stream. Can be stored in the storage means or reproduced in the stored signal stream.

As described above, the digital broadcasting recording and reproducing apparatus receives a broadcast through an ATSC (Advanced Television Systems Committee) broadcast channel and a NTSC (National Television Standards Committee) broadcast channel. The format of each broadcast can be converted and stored.

In addition, the digital broadcasting recording and playback apparatus provides a multi-screen function. Examples of the multi-screen mode include PIP (Picture In Picture), POP (Picture Out of Picture), PBP (Picture By Picture), and Split Screen. have.

The functions such as PIP, POP, PBP, Split Screen, etc. are distinguished in that positions, numbers, and sizes of divided screens are different, but basically provide similar functions in that they display the same image or different images on multiple screens.

For example, using the PIP function, another small screen (sub screen) is provided on the full screen (main screen), so that the main channel is displayed as the main screen and the sub channel is displayed as the sub screen. Therefore, the user can view the broadcasting channel to be viewed as the main screen and monitor other channels through the sub screen.

In addition, when a broadcast of the same channel is played on the main screen and the sub screen, the full screen is displayed on the sub screen, and the partial region is displayed on the main screen, so that the user can watch and watch the partial region in more detail.

Meanwhile, in addition to the multi-screen function, the conventional digital broadcasting recording and reproducing apparatus provides a function of setting various aspect ratios when splitting the screen. When such a function is used, "4: 3" and "16: 9" are used. , "Zoom1", "Zoom2", "Cinema Zoom", "Horizontal", etc. can be enlarged and watched in various ways.

However, according to the conventional method, when the entire image is displayed on the divided screen or the image is enlarged on the divided screen, the screen is enlarged around the center of the entire screen regardless of its size.

Therefore, the viewer may feel uncomfortable when trying to enlarge the area by dividing the entire screen in more detail. For this reason, the division ratio function is not utilized much compared to the convenience of the original function.

Accordingly, in the present invention, in providing a multi-screen function and a split ratio setting function, a digital broadcasting recording and reproduction for selecting one area among detailed areas of a screen displayed on a sub-screen and enlarging and displaying the selected area on the main screen It is an object to provide a device.

In addition, the present invention is to select a detailed region constituting the screen on the sub-screen through the OSD function, matching the output position value and size of the sub-screen, the input position value and the size of the main screen to enlarge the high quality image without deterioration of image quality Another object of the present invention is to provide a method of providing a partial region of a sub-screen as a main screen on a digital broadcast recording / reproducing apparatus providing a video broadcasting apparatus.

In order to achieve the above object, a digital broadcasting recording and reproducing apparatus for providing a partial region of a sub-screen according to the present invention as a main screen displays an entire image of digital image data on a sub-screen and enlarges the selected partial region from the whole image. A digital broadcast recording and reproducing apparatus for displaying on a main screen, comprising: a sub-screen reproducing unit for reproducing image data transmitted by a video input path according to position / size information of a sub-screen; A main screen reproducing unit for reproducing the image data transmitted by the video input path to the main screen; The sub-screen is divided into a plurality of sub-regions to detect the position and size of each sub-region, and when one sub-region is selected, the position and size of the selected sub-region are converted to match the main screen, and the main screen playback unit A controller for switching image input paths so that image data of the converted partial region is reproduced; Selects any one partial area and transfers selection information to the control unit; and when a multi-screen mode for dividing a screen is input, initial video input paths of the sub-screen playback unit and the main screen playback unit are set to the same image data channel. An interface unit; And an OSD (On Screen Display) processing unit for displaying the partial area on the sub-screen and moving / displaying the selection area so that the partial area is selected through the interface unit.

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In addition, the interface unit of the digital broadcasting recording and reproducing apparatus for providing a partial region of a sub-screen as a main screen according to the present invention receives multi-screen setting information, and transmits image data according to the multi-screen setting information to sub-screen position / size information. And a preprocessing unit configured to transfer the converted image data and sub-screen position / size information to the sub-screen playback unit.

The control unit of the digital broadcasting recording and reproducing apparatus for providing a partial region of the sub-screen as a main screen according to the present invention switches the reproduction mode of the sub-screen reproducing section to a mute mode before the preprocessing unit is operated. After the preprocessor finishes the operation, the buffer mode is characterized in that the release.

The method for providing a partial region of a sub-screen as a main screen on the digital broadcasting recording and reproducing apparatus according to the present invention for achieving the above another object is to display the entire image of the digital image data on the sub-screen and the selected portion of the whole image. In a method of providing a partial region of a sub-screen as a main screen on a digital broadcast recording / reproducing apparatus which enlarges an area and displays the main screen, the control unit switches the playback mode of the sub-screen playback section to a buffer mode, and the sub-screen playback section and Setting an initial image input path of the main screen reproducing unit to the same image data channel; Converting image data according to sub-screen position / size information and transferring the converted image data and sub-screen position / size information to the sub-screen playback unit; When the buffer mode is released, the sub picture reproducing unit reproduces the image data according to the position / size information of the sub screen, and the main screen reproducing unit reproduces the image data on the main screen; The sub-screen is divided into a plurality of sub-regions to detect the position and size of each sub-region, and when one of the sub-regions is selected by moving an OSD-processed selection area to select the sub-regions. Converting the position and size to match the main screen; And reproducing the image data of the converted partial region by the main screen reproducing unit.

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The method may further include transmitting the converted image data and sub-screen position / size information to the sub-screen playback unit in the method of providing a partial region of the sub-screen as the main screen on the digital broadcast recording / playback apparatus according to the present invention. It is characterized in that it further comprises the step of setting the multi-screen mode, the operation signal is sent to the main screen playback unit and the sub-screen playback unit.

Hereinafter, a digital broadcast recording and reproducing apparatus for providing a partial region of a sub screen as a main screen according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a component of a digital broadcast recording and reproducing apparatus (hereinafter referred to as "digital broadcasting recording and reproducing apparatus according to the present invention") 100 that provides a partial region of a sub-screen as a main screen according to an embodiment of the present invention. It is a block diagram schematically showing.

Referring to FIG. 1, the digital broadcasting recording and reproducing apparatus 100 according to the present invention includes a synchronization detector 110, an analog signal processor 115, a digital signal processor, a controller 125, a stream controller 130, and a demultiplexer ( 135, a video unit 140, an interface unit 150, and a storage unit 150.

An object of the present invention relates to an image processing for providing a partial region of a sub-screen as a main screen, which is mainly performed by the video unit 140.

Therefore, referring to FIG. 1, a general process of receiving and playing an image by the digital broadcasting recording and reproducing apparatus 100 according to the present invention will first be briefly described. For detailed functions of the video unit 140, see FIG. 2. It will be described later.

First, the synchronization detector 110 detects synchronization signals of AV signals received through the antenna 105 and transfers the AV signals separated by channels to the analog signal processor 115 and the digital signal processor 120.

The analog signal processor 115 includes an NTSC decoder (not shown), an MPEG encoder (not shown), and the like, to decode an analog AV signal. When the AV signal is recorded, the analog signal is compressed through an MPEG encoder and the controller ( Through the control of 125 is stored in the storage means 150.

The digital signal processor 120 includes a VSB (Vestigial Side Band) demodulator (not shown) and the like to decode the digital AV signal.

The controller 125 transmits an enable signal to control each component, and in particular, receives the channel selection information of the AV signal and transmits the received channel selection information to the video unit 140.

Here, the channel selection information means selection information for setting the AV signal as a main channel or a sub channel so that the video signal of the AV signal is displayed on a main screen or a sub screen.

The controller 125 receives the channel selection information through the interface unit 150. The interface unit 150 communicates with the remote controller, processes the received data, and transmits the received data to the controller 125. In this case, when the data received through the interface unit 150 is data related to the video unit 140, the controller 125 transmits the data to the video unit 140.

In addition, the stream controller 130 corrects a stream error of the AV signal transmitted from the analog signal processor 115 and the digital signal processor 120 and sequentially delivers the stream data at a data processing speed. .

The demultiplexer 135 demuxes an AV signal to classify a video signal for each channel and additional broadcast data (for example, EPG (Electric Program Guide) data, etc.) to control the controller 125 and the video unit 140. To pass.

FIG. 2 is a block diagram schematically illustrating components of the video unit 140 provided in the digital broadcasting recording and reproducing apparatus 100 that provides a partial region of a sub-screen as a main screen according to an exemplary embodiment of the present invention.

Referring to FIG. 2, the video unit 140 includes a sub-screen playback module 141, a main screen playback module 142, an image input initialization module 143, a preprocessing module 144, a buffer mode processing module 145, And a partial region detection module 146, a partial region conversion module 147, an image input processing module 148, and an OSD processing module 149.

First, the interface unit 150 receives the multi-screen mode selection information and the multi-screen setting information according to the present invention. The multi-screen mode, PIP (Picture In Picture), POP (Picture Out of Picture), PBP (Picture) By Picture), screen division mode, etc. may be used.

Hereinafter, the PIP mode is used as the multi-screen mode used in the present invention. In addition, the multi-screen setting information includes position and size information (information for setting which size and aspect ratio is reproduced at which position of the entire screen).

The image input processing module 148 controls the image input paths of the sub-screen playback module 141 and the main screen playback module 142 to output the same screen on the sub-screen and the main screen, or to display screens of different channels. To be printed.

The sub picture reproducing module 141 reproduces the image data transferred from the preprocessing module 144 through the image input path according to the position / size information of the sub picture.

In this case, the preprocessing module 144 converts the image data transmitted from the demultiplexer 135 according to the multi-screen setting information (sub-screen position / size information) input through the interface unit 150 and converts the image data. Transferred image data and sub-screen position / size information to the sub-screen playback unit.

Here, the multi-screen setting information includes input image size automatic adjustment function setting information. When the input image size automatic adjustment mode is set, the preprocessing module 144 may automatically convert the transferred image data.

The main screen reproduction module 142 reproduces the image data transmitted from the demultiplexer 135 through the image input path on the main screen.

When the multi-screen mode according to the present invention is set through the interface unit 150, the buffer mode processing module 145 performs the sub-screen playback unit before the preprocessing module 144 and the image input initialization module 143 are operated. The play mode is switched to the mute mode, and the buffer mode is released after the preprocessing module 144 and the image input initialization module 143 complete the operation.

The reason why the buffer mode processing module 145 adjusts the buffer mode as described above is because the sub picture transient phenomenon that occurs when the sub picture image is momentarily changed (for reference, unlike the analog broadcast, digital broadcast data is not included in the digital broadcast. The preprocessing process such as decoding is preceded, and when the reproduced image is changed, a transient phenomenon such as the screen is broken due to the preprocessing process is generated).

The buffer mode may be implemented by temporarily darkening a screen (during preprocessing) or processing a still image.

When the multi-screen mode according to the present invention is selected, the video input initialization module 143 sets initial video input paths of the sub-screen playback module 141 and the main screen playback module 142 to the same video data channel. As a kind of preprocessing, the sub picture reproducing module 141 and the main picture reproducing module 142 are set to the same video data channel before reproducing the transferred video data.

The preprocessing module 144 is operated after the image input initialization module 143 is operated.

When the preprocessing process is performed and the buffer mode processing module 145 releases the buffer mode of the sub-screen, the sub-screen playback module 141 and the main screen playback module 142 simultaneously reproduce the same image data.

The partial region detection module 146 divides the sub-screen into a plurality of partial regions and detects the position and size of each partial region.

As the partial region detection module 146 divides the sub-screen into a plurality of sub-regions, the OSD processing module 149 displays the partial region on the sub-screen, and the partial through the interface unit 150. Moves / displays the selection area so that the area is selected.

Accordingly, the user may select a partial area to be enlarged from the entire screen reproduced on the sub-screen using the remote controller, and the interface unit 150 transmits the information of the selected partial area to the partial area conversion module 147. do.

3 is a diagram illustrating a screen in which the OSD processing module 149 displays partial areas on a sub-screen according to an exemplary embodiment of the present invention.

The full screen A shown in FIG. 3 is an enlarged view of the sub-screen image, and the sub-screen is divided into eight sub-regions a1 to a8 and displayed.

As the partial region is selected, the partial region conversion module 147 converts the position and size of the selected partial region to match the main screen, and transfers the converted image data to the image input processing module 148. .

When the converted image data is transferred, the image input processing module 148 switches the image input path of the main screen reproduction module 142, and the main screen reproduction module 142 converts the image data of the converted partial region. Play it back.

Here, the partial region of the sub-screen reproduced on the main screen is an enlarged image. In general, in the case of HD-quality video, the actual display resolution is "1920 x 1080", "1440 x 1080", and "1280 x 720". Since it is internal or external, even if the partial region is enlarged, it can be reproduced with clear image quality.

4 and 5 illustrate a screen in the case where the digital broadcasting recording and reproducing apparatus 100 according to the present invention enlarges and displays the selected partial areas a1 and a8 on the main screen (b1 and b8). The illustrated figure.

Hereinafter, a method of providing a partial region of a sub-screen as a main screen on the digital broadcast recording / playback apparatus 100 according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

6 is a flowchart illustrating a method of providing a partial region as a main screen on the digital broadcasting recording and reproducing apparatus 100 according to an exemplary embodiment of the present invention.

First, the buffer mode processing module 145 switches the playback mode of the sub-screen playback module 141 to the buffer mode (S100), and the image input initialization module 143 is the sub-screen playback module 141 and the main screen. The initial image input path of the screen playback module 142 is set to the same image data channel (S200).

The preprocessing module 144 is set to the position / size information of the sub-screen (S300), and receives the input image size automatic adjustment mode for the sub-screen playback (S400).

In this case, if the multi-screen mode according to the present invention is not set (S500), the above process is a preprocessing process, and after such a process is completed, the multi-screen mode according to the present invention may be set (S600).

When the multi-screen mode according to the present invention is set, the buffer processing module releases the buffer mode set in the sub-screen playback module 141 (S700).

The preprocessing module 144 automatically converts the image data transmitted from the demultiplexer 135 according to the set sub-screen position / size information, and converts the converted image data and sub-screen position / size information into the sub-screen. Transfer to the reproducing unit (S800).

The sub picture reproducing module 141 reproduces the image data transmitted from the preprocessing module 144 according to the position / size information of the sub picture through the image input path, and the main picture reproducing module 142 is a demultiplexer ( 135) The video data transferred from the screen is played back on the main screen. Therefore, the same video data is reproduced on the main screen and the sub-screen (S900).

When the same image data is reproduced on the main screen and the sub-screen, the sub-region detection module 146 divides the sub-screen into a plurality of sub-regions to detect the position and size of each sub-region, and the OSD processing module 149 Displays partial areas on the sub-screen to move / display the selected area of the partial area (S1000).

Accordingly, the user selects the partial region to be enlarged while moving the selection region of the partial region by operating the remote controller, and the interface unit 150 receives selection information of the partial region (S1100).

When the partial region to be enlarged is selected, the partial region detection module 146 transmits the position and size information of the corresponding region to the partial region conversion module 147, and the partial region conversion module 147 positions the selected partial region. And the size information is converted to match the main screen and transmitted to the main screen playback module 142 (S1200).

The main screen reproducing unit reproduces the image data of the converted partial region, and finally the entire image is displayed on the sub-screen, and the partial screen of the entire image selected on the sub-screen is enlarged and displayed (S1300).

The present invention has been described above with reference to the preferred embodiments, which are merely examples and are not intended to limit the present invention, and those skilled in the art to which the present invention pertains do not depart from the essential characteristics of the present invention. It will be appreciated that various modifications and applications are not possible that are not illustrated above. For example, each component specifically shown in the embodiment of the present invention can be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.

According to the digital broadcasting recording and reproducing apparatus for providing a partial region of a sub-screen as a main screen according to the present invention, a user selects and enlarges any area of the entire screen by enlarging and displaying a detailed region selected from the sub-screen on the main screen. There is an effect that can be played back, and thus the multi-screen function and the split ratio setting function can be used more efficiently.

In addition, according to the present invention, it is possible to select a detailed region of the entire screen through a convenient operation, and to reproduce a magnified image of high quality without distortion of the image, such as degradation of image quality and transient phenomenon of sub-screen.

Claims (9)

A digital broadcasting recording and reproducing apparatus for displaying an entire image of digital image data on a sub-screen and enlarging the selected partial region of the entire image on a main screen, A sub-screen reproducing unit for reproducing the image data transmitted by the image input path according to the position / size information of the sub-screen; A main screen reproducing unit for reproducing the image data transmitted by the video input path to the main screen; The sub-screen is divided into a plurality of sub-regions to detect the position and size of each sub-region, and when one sub-region is selected, the position and size of the selected sub-region are converted to match the main screen, and the main screen playback unit A controller for switching image input paths so that image data of the converted partial region is reproduced; Selects any one partial area and transfers selection information to the control unit; and when a multi-screen mode for dividing a screen is input, initial video input paths of the sub-screen playback unit and the main screen playback unit are set to the same image data channel. An interface unit; And Displaying the partial area on the sub-screen, and includes an OSD (On Screen Display) processing unit for moving / displaying the selection area so that the partial area is selected through the interface unit to the main screen Digital broadcast recording and playback device provided. delete The method of claim 1, The interface unit receives the multi-screen setting information, And converting the image data according to the sub-screen position / size information according to the multi-screen setting information, and transmitting the converted image data and the sub-screen position / size information to the sub-screen playback unit. Digital broadcasting recording and playback device that provides a partial screen of a sub screen as a main screen. The method of claim 1 or 3, wherein the control unit Before the preprocessing unit is operated, the sub-screen playback unit is switched to a play mode to a mute mode, and after the preprocessing unit completes the operation, the sub-screen region is selected as the main screen. Digital broadcast recording and playback device provided. The method of claim 1, wherein the multi-screen mode Digital broadcasting recording and playback device that provides a partial area of a sub-screen as a main screen, which is one of PIP (Picture In Picture), POP (Picture Out of Picture), PBP (Picture By Picture), and screen division. . A method of providing a partial region of a sub-screen as a main screen on a digital broadcasting recording / reproducing apparatus for displaying a whole image of digital image data on a sub-screen and enlarging the selected partial region of the whole image on the main screen, The control unit switches the playback mode of the sub picture reproducing unit to the buffer mode, and sets initial video input paths of the sub picture reproducing unit and the main picture reproducing unit to the same image data channel; Converting image data according to sub-screen position / size information and transferring the converted image data and sub-screen position / size information to the sub-screen playback unit; When the buffer mode is released, the sub picture reproducing unit reproduces the image data according to the position / size information of the sub screen, and the main screen reproducing unit reproduces the image data on the main screen; The sub-screen is divided into a plurality of sub-regions to detect the position and size of each sub-region, and when one of the sub-regions is selected by moving an OSD-processed selection area to select the sub-regions. Converting the position and size to match the main screen; And And the main screen reproducing unit reproducing the image data of the converted partial region as a main screen on the digital broadcasting recording and reproducing apparatus. delete The method of claim 6, wherein the transmitting of the converted image data and sub-screen position / size information to the sub-screen playback unit The display mode is set to a multi-screen mode, and further comprising the step of transmitting the operation signal to the main screen playback unit and the sub-screen playback unit to provide a partial region of the sub-screen as the main screen on the digital broadcast recording and playback device How to. The method of claim 6, wherein the transmitting of the converted image data and sub-screen position / size information to the sub-screen playback unit A method of providing a partial region of a sub-screen as a main screen on a digital broadcasting recording and reproducing apparatus, comprising: receiving sub-screen position / size information.

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