Information storage medium storing graphic data and apparatus and method of processing the graphic data

• US 7,945,124 B2
• Filed: 07/28/2008
• Issued: 05/17/2011
• Est. Priority Date: 07/31/2003
• Status: Expired

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Jung, Kil-soo, Moon, Seong-jin
• Primary Examiner(s): Dang; Duy M
• Application Number:
  US12/180,645
• Publication Number:
  US 20080278505A1
• Time in Patent Office: 1,023 Days
• Field of Search: 382/180, 382/232, 382/233, 382/236, 382/305, 709/231, 360/1, 386/69, 386/95, 386/96, 386/124, 386/125, 715/803, 345/418, 345/501, 345/530, 345/536
• US Class Current: 382/305
• CPC Class Codes: G11B 27/10 Indexing; Addressing; Timing or synchronising; Measuring tape travel
• CPC Class Codes: H04N 21/23412 for generating or manipulating the scene composition of objects, e.g. MPEG-4 objects
• CPC Class Codes: H04N 21/23614 Multiplexing of additional data and video streams arrangements for simultaneous broadcast of plural pieces of information H04H20/28
• CPC Class Codes: H04N 21/43074 of additional data with content streams on the same device, e.g. of EPG data or interactive icon with a TV program
• CPC Class Codes: H04N 21/4331 Caching operations, e.g. of an advertisement for later insertion during playback
• 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 21/4348 Demultiplexing of additional data and video streams
• CPC Class Codes: H04N 21/44012 involving rendering scenes according to scene graphs, e.g. MPEG-4 scene graphs
• CPC Class Codes: H04N 21/4884 for displaying subtitles
• CPC Class Codes: H04N 21/8133 specifically related to the content, e.g. biography of the actors in a movie, detailed information about an article seen in a video program
• CPC Class Codes: H04N 5/76 Television signal recording
• CPC Class Codes: H04N 5/91 Television signal processing therefor
• CPC Class Codes: H04N 9/8042 involving data reduction
• CPC Class Codes: H04N 9/8205 involving the multiplexing of an additional signal and the colour video signal

Abstract

An information storage medium including graphic data and presentation information, and an apparatus and method of processing the graphic data are provided. The information storage medium includes the graphic data, page composition information which defines page composition of the graphic data, and the presentation information indicating when graphic screen data, which is composed with reference to the page composition information of the graphic data, is output to a display screen. Therefore, a graphic object is reusable in graphic data processing, and accordingly, a time taken to process the graphic data is reducible and memory area may be saved.

Claims

1. An apparatus for processing graphic data, the apparatus comprising:

a reader to read data from an information storage medium, the data comprising a display set comprising an object segment and a composition segment, the object segment comprising a plurality of graphic object data respectively defining a plurality of graphic objects to be used by the apparatus in composing a graphic screen to be displayed on a display device, and the composition segment comprising composition information for at least some of the plurality of graphic objects defined by the plurality of graphic object data to be used by the apparatus in composing the graphic screen, the composition information specifying how the at least some of the plurality of graphic objects are to be displayed on the graphic screen;

a first buffer to store the plurality of graphic object data for a predetermined time so that the plurality of graphic object data remain available for use for the predetermined time;

a second buffer to store the composition information; and

a third buffer to store composed graphic data defining the graphic screen to be output to the display device, the composed graphic data being composed from at least some of the plurality of graphic object data stored in the first buffer;

wherein the composition information comprises position information indicating where the at least some of the plurality of graphic objects are to be displayed on the graphic screen.

2. The apparatus of claim 1, wherein each of the plurality of graphic object data is identified by a respective object identifier.

3. The apparatus of claim 1, wherein the first buffer stores the plurality of graphic object data until the first buffer is reset.

4. A non-transitory information storage medium for use by a computer, the non-transitory information storage medium comprising:

a display set comprising an object segment and a composition segment, the object segment comprising a plurality of graphic object data respectively defining a plurality of graphic objects to be used by the computer in composing a graphic screen to be displayed on a display device, and the composition segment comprising composition information for at least some of the plurality of graphic objects defined by the plurality of graphic object data to be used by the computer in composing the graphic screen, the composition information specifying how the at least some of the plurality of graphic objects are to be displayed on the graphic screen;

wherein the composition information comprises position information indicating where the at least some of the plurality of graphic objects are to be displayed on the graphic screen.

5. The non-transitory information storage medium of claim 4, wherein each of the plurality of graphic object data is identified by a respective object identifier.