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

• US 8,160,401 B2
• Filed: 07/28/2008
• Issued: 04/17/2012
• 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:
  US12/180,656
• Publication Number:
  US 20080278506A1
• Time in Patent Office: 1,359 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 graphic object data defining a graphic object 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 the graphic object defined by the graphic object data to be used by the apparatus in composing the graphic screen, the composition information specifying how the graphic object is to be displayed on the graphic screen;

a decoder to decode the object segment to obtain decoded graphic object data;

a first buffer to store the decoded graphic object data for a predetermined time so that the decoded graphic object data remains available for use for the predetermined time; and

a second buffer to store the composition information;

wherein the object segment further comprises first time information according to which the the object segment is to be decoded by the decoder; and

the composition segment further comprises second time information indicating an output time when the graphic screen composed based on the composition information included in the composition segment is to be output to the display device.

2. The apparatus of claim 1, wherein the graphic object data is identified by an object identifier.

3. The apparatus of claim 1, wherein the first buffer stores the decoded 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 graphic object data defining a graphic object 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 the graphic object defined by the graphic object data to be used by the computer in composing the graphic screen, the composition information specifying how the graphic object is to be displayed on the graphic screen;

wherein the object segment further comprises first time information according to which the object segment is to be decoded by the computer to obtain decoded graphic object data; and

the composition information further comprises time second time information indicating an output time when the graphic screen composed based on the composition information included in the composition segment is to be output to the display device.

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