BROADCASTING RECEIVER AND METHOD FOR DISPLAYING 3D IMAGES

• US 20120320155A1
• Filed: 01/10/2011
• Published: 12/20/2012
• Est. Priority Date: 01/11/2010
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Suh, Jong Yeul, Kim, Jin Pil, Kim, Kwan Suk
• Granted Patent: US 9,215,444 B2
• Time in Patent Office: Days
• US Class Current: 348/43
• CPC Class Codes: H04N 13/122 Improving the 3D impression of stereoscopic images by modifying image signal contents, e.g. by filtering or adding monoscopic depth cues H04N13/128 takes precedence
• CPC Class Codes: H04N 13/128 Adjusting depth or disparity
• CPC Class Codes: H04N 13/139 Format conversion, e.g. of frame-rate or size
• CPC Class Codes: H04N 13/172 image signals comprising non-image signal components, e.g. headers or format information
• CPC Class Codes: H04N 13/183 On-screen display [OSD] information, e.g. subtitles or menus
• CPC Class Codes: H04N 2013/0081 Depth or disparity estimation from stereoscopic image signals
• CPC Class Codes: H04N 21/42653 for processing graphics
• CPC Class Codes: H04N 21/431 Generation of visual interfaces for content selection or interaction; Content or additional data rendering
• CPC Class Codes: H04N 21/434 Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream demultiplexing of data packets for data networks, e.g. RTP/UDP H04L65/00
• CPC Class Codes: H04N 21/4858 for modifying screen layout parameters, e.g. fonts, size of the windows
• CPC Class Codes: H04N 21/4884 for displaying subtitles
• CPC Class Codes: H04N 21/8146 involving graphical data, e.g. 3D object, 2D graphics
• CPC Class Codes: H04N 21/816 involving special video data, e.g 3D video

Abstract

Disclosed are a method for displaying 3D images and a broadcast receiver. The method for displaying 3D images according to one embodiment of the present invention comprises the steps of: receiving broadcasting signals including video data and 3D object data; decoding the 3D object data, the 3D object data including texts or image information for a 3D object, output position information of the 3D object, and disparity information of the 3D object; obtaining parallax values from the disparity information and producing distortion compensation coefficients using the parallax values; adjusting a display size of the 3D object using the distortion compensation coefficients; and outputting and displaying the 3D object.

Claims

1. A 3D image display method, comprising:

receiving a broadcast signal including video data and 3D object data;

decoding the 3D object data, wherein the 3D object data includes text or image information about a 3D object, output location information of the 3D object, and disparity information of the 3D object;

acquiring a parallax value from the disparity information and calculating a distortion compensation factor using the parallax value;

adjusting a display size of the 3D object using the distortion compensation factor; and

displaying the 3D object.

2. The image display method of claim 1, wherein the 3D object data includes caption data and is included in a header part of the video data.

3. The image display method of claim 1, wherein the 3D object data includes subtitle data and is received through an Elementary Stream (ES) separate from the video data.

4. The image display method of claim 1, wherein the calculating a distortion compensation factor includes dividing a value obtained by subtracting a parallax value from an interocular distance value by the interocular distance value.

5. The image display method of claim 1, wherein the 3D object data further includes depth information of the 3D object.

6. The image display method of claim 5, further comprising calculating the distortion compensation factor using the depth information.

7. A broadcast receiver, comprising:

a broadcast signal receiver for receiving a broadcast signal including video data and 3D object data;

a decoder for decoding the 3D object data, wherein the 3D object data includes text or image information about a 3D object, output location information of the 3D object, and disparity information of the 3D object;

a graphics engine for acquiring a parallax value from the disparity information, calculating a distortion compensation factor using the parallax value, and adjusting a display size of the 3D object using the distortion compensation factor; and

a formatter for displaying the 3D object.

8. The broadcast receiver of claim 7, wherein the 3D object data includes caption data and is included in a header part of the video data.

9. The broadcast receiver of claim 7, wherein the 3D object data includes subtitle data and is received through an Elementary Stream (ES) separate from the video data.

10. The broadcast receiver of claim 7, wherein the graphics engine calculates the distortion compensation factor by dividing a value obtained by subtracting a parallax value from an interocular distance value by the interocular distance value.

11. The broadcast receiver of claim 7, wherein the 3D object data further includes depth information of the 3D object.

12. The broadcast receiver of claim 11, wherein the graphics engine calculates the distortion compensation factor using the depth information.