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

• US 8,189,918 B2
• Filed: 07/25/2008
• Issued: 05/29/2012
• Est. Priority Date: 07/31/2003
• Status: Active Grant

• 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:
  US12/179,864
• Publication Number:
  US 20080278499A1
• Time in Patent Office: 1,404 Days
• Field of Search: 382/180, 382/232, 382/233, 382/236, 382/305, 709/231, 386/69, 386/95, 386/96, 380/1, 715/803, 345/565
• US Class Current: 382/180
• 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 decoder to decode a plurality of object definition segments to obtain a plurality of graphic object data respectively defining a graphic object and to decode a composition segment to obtain composition information;

a first buffer to store the plurality of graphic object data output from the decoder for a predetermined time so that the plurality of graphic object data remain available for use for the predetermined time, the plurality of graphic object data being identifiable by a respective object identifier in the first buffer;

a composition buffer to store the composition information output from the decoder, the composition information defining a page identified by a page identifier and being used to compose a graphic screen corresponding to the page; and

a second buffer to store the composed graphic screen to be output to a display device, the composed graphic screen being composed from at least one of the plurality of graphic object data stored in the first buffer based on the composition information stored in the composition buffer.

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