Object-based audio-visual terminal and bitstream structure
DCFirst Claim
1. A method for processing object-based audiovisual/video data at a receiver to generate a composed scene, comprising:
- (a) receiving in a data bit stream, over time, at least one audiovisual/video object and composition information for the object;
(b) locally storing the at least one object;
(c) processing the received composition information to compose a scene using the at least one stored object; and
(d) generating the composed scene.
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Abstract
As information to be processed at an object-based video or audio-visual (AV) terminal, an object-oriented bitstream includes objects, composition information, and scene demarcation information. Such bitstream structure allows on-line editing, e.g. cut and paste, insertion/deletion, grouping, and special effects. In the interest of ease of editing, AV objects and their composition information are transmitted or accessed on separate logical channels (LCs). Objects which have a lifetime in the decoder beyond their initial presentation time are cached for reuse until a selected expiration time. The system includes a de-multiplexer, a controller which controls the operation of the AV terminal, input buffers, AV objects decoders, buffers for decoded data, a composer, a display, and an object cache.
50 Citations
23 Claims
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1. A method for processing object-based audiovisual/video data at a receiver to generate a composed scene, comprising:
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(a) receiving in a data bit stream, over time, at least one audiovisual/video object and composition information for the object; (b) locally storing the at least one object; (c) processing the received composition information to compose a scene using the at least one stored object; and (d) generating the composed scene. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An apparatus for processing object-based audiovisual/video data, comprising:
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(a) a receiver circuit configured to receive in a data bit stream, over time, at least one audiovisual/video object and composition information for the object; (b) local storage configured to store the at least one object; (c) a composer circuit configured to process the received composition information to compose a scene using the at least one object; and (d) an scene generating device configured to generate the composed scene. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification