FRAME PROCESSING DEVICE, TELEVISION RECEIVING APPARATUS AND FRAME PROCESSING METHOD

• US 20100165079A1
• Filed: 06/08/2009
• Published: 07/01/2010
• Est. Priority Date: 12/26/2008
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: YAMADA, Masahiro
• Granted Patent: US 8,339,441 B2
• Time in Patent Office: Days
• US Class Current: 348/43
• CPC Class Codes: H04N 13/156 Mixing image signals
• CPC Class Codes: H04N 13/161 Encoding, multiplexing or demultiplexing different image signal components for multi-view video sequence encoding H04N19/597
• CPC Class Codes: H04N 13/183 On-screen display [OSD] information, e.g. subtitles or menus
• CPC Class Codes: H04N 2213/007 Aspects relating to detection of stereoscopic image format, e.g. for adaptation to the display format

Abstract

A three-dimensional video is appropriately displayed. A frame processing device includes: a frame extraction module configured to sequentially extract image frames for left eye and for right eye from a three-dimensional video signal; a frame group generation module configured to alternately generate frame groups for left eye and for right eye based on the extracted image frames for left eye and for right eye; a frame storage module configured to sequentially store the alternately generated frame groups for left eye and for right eye; a video processing module configured to sequentially extract the image frames from the frame storage module, and sequentially rewriting a display screen; and a display invalidation module configured to invalidate the display on the display screen during periods of rewriting the image frame for left eye to that for right eye and the image frame for right eye to that for left eye.

Claims

1. A frame processing device, comprising:

a frame extraction module configured to sequentially extract image frames for left eye and image frames for right eye from a three-dimensional video signal containing a video signal for left eye and a video signal for right eye;

a frame group generation module configured to alternately generate a frame group for left eye in which a plurality of image frames for left eye are arranged and a frame group for right eye in which a plurality of image frames for right eye are arranged, based on the sequentially extracted image frames for left eye and for right eye;

a frame storage module configured to sequentially store the alternately generated frame group for left eye and frame group for right eye;

a display rewrite module configured to sequentially extract the image frames respectively from the frame group for left eye and the frame group for right eye stored in the frame storage module, and sequentially rewriting a display on a display screen to the extracted image frames; and

a display invalidation module configured to invalidate the display on the display screen during a first period during which the display rewrite module rewrites the image frame for left eye to the image frame for right eye, and during a second period during which the display rewrite module rewrites the image frame for right eye to the image frame for left eye.

2. The frame processing device according to claim 1,

wherein the display screen is a display screen of a display device having a light source and a display element performing display by receiving supply of light from the light source;

and

wherein the display invalidation module stops light emission of the light source during the first and second periods.

3. The frame processing device according to claim 1,

wherein the display rewrite module includes a video signal output module configured to output a video signal corresponding to the image frame extracted from the frame storage module to the display device having the display screen;

and

wherein the display invalidation module causes the video signal output module to output a video signal bringing the display screen to a non-display state during the first and second periods.

4. The frame processing device according to claim 1,

wherein the frame group generation module generates interpolation frames respectively from the image frames for left eye and for right eye extracted by the frame extraction module, and arranges the interpolation frames and original image frames to generate the frame group for left eye and the frame group for right eye.

5. The frame processing device according to claim 1, further comprising:

a signal input module configured to be capable of inputting a two-dimensional video signal representing two-dimensional video and the three-dimensional video signal individually thereinto;

a signal determination module configured to determine whether the video signal inputted by the signal input module is the three-dimensional video signal or the two-dimensional video signal;

a second frame extraction module configured to sequentially extract image frames for the two-dimensional video from the inputted two-dimensional video signal when the signal determination module determines that the two-dimensional video signal has been inputted; and

a second frame group generation module configured to generate an interpolation frame predicted from a relation between successive image frames among a plurality of the image frames for the two-dimensional video sequentially extracted by the second frame extraction module.

6. The frame processing device according to claim 5,

wherein the image frames for the two-dimensional video extracted from the two-dimensional video signal are sequentially stored in the frame storage module;

and

wherein the second frame group generation module generates the interpolation frame based on the image frames for the two-dimensional video sequentially stored in the frame storage module.

7. A television receiving apparatus, comprising:

a frame extraction module configured to sequentially extract image frames for left eye and image frames for right eye from a three-dimensional video signal containing a video signal for left eye and a video signal for right eye;

a frame group generation module configured to alternately generate a frame group for left eye in which a plurality of image frames for left eye are arranged and a frame group for right eye in which a plurality of image frames for right eye are arranged, based on the sequentially extracted image frames for left eye and for right eye;

a frame storage module configured to sequentially store the alternately generated frame group for left eye and frame group for right eye;

a display rewrite module configured to sequentially extract the image frames respectively from the frame group for left eye and the frame group for right eye stored in the frame storage module, and sequentially rewriting a display on a display screen to the extracted image frames; and

a display invalidation module configured to invalidate the display on the display screen during a first period during which the display rewrite module rewrites the image frame for left eye to the image frame for right eye, and during a second period during which the display rewrite module rewrites the image frame for right eye to the image frame for left eye.

8. A frame processing method, comprising:

sequentially extracting image frames for left eye and image frames for right eye from a three-dimensional video signal containing a video signal for left eye and a video signal for right eye;

alternately generating a frame group for left eye in which a plurality of image frames for left eye are arranged and a frame group for right eye in which a plurality of image frames for right eye are arranged, based on the sequentially extracted image frames for left eye and for right eye;

sequentially storing the alternately generated frame group for left eye and frame group for right eye;

sequentially extracting the image frames respectively from the frame group for left eye and the frame group for right eye stored in the frame storage module, and sequentially rewriting a display on a display screen to the extracted image frames; and

invalidating the display on the display screen during a first period of rewriting the image frame for left eye to the image frame for right eye, and during a second period of rewriting the image frame for right eye to the image frame for left eye.

9. The frame processing method according to claim 8,

wherein the display screen is a display screen of a display device having a light source and a display element performing display by receiving supply of light from the light source;

and

wherein in the step of invalidating the display, light emission of the light source is stopped during the first and second periods.

10. The frame processing method according to claim 8,

wherein in the step of invalidating the display, a video signal bringing the display screen to a non-display state is outputted to the display device of the display screen during the first and second periods.

11. The frame processing method according to claim 8,

wherein the step of alternately generating the frame group for left eye and the frame group for right eye comprises:

generating interpolation frames respectively from the extracted image frames for left eye and for right eye; and

arranging the interpolation frames and original image frames to generate the frame group for left eye and the frame group for right eye.

12. The frame processing method according to claim 8, further comprising:

inputting a two-dimensional video signal representing two-dimensional video and the three-dimensional video signal individually;

determining whether the inputted video signal is the three-dimensional video signal or the two-dimensional video signal;

sequentially extracting image frames for the two-dimensional video from the inputted two-dimensional video signal when that the two-dimensional video signal has been inputted is determined in the step of determining; and

generating an interpolation frame predicted from a relation between successive image frames among a plurality of the image frames for the two-dimensional video sequentially extracted.

13. The frame processing method according to claim 12,

wherein the image frames for the two-dimensional video extracted from the two-dimensional video signal are sequentially stored in the frame storage module;

and

wherein in the step of generating an interpolation frame predicted from a relation between successive image frames, the interpolation frame is generated based on the image frames for the two-dimensional video sequentially stored in the frame storage module.