Apparatus and method for inserting rating code into the digital video signal
First Claim
1. An image data coding method for recording digital moving image data and digital aural data on a recording medium in a time-division multiplexing manner, comprising the steps of:
- partitioning at least said digital moving image data into packets;
detecting an entry point included in a coded image in a frame which is present, by at least one sheet, in said packet;
adding a rating code to said entry point, said rating code including start and end addresses of a risque part of said digital moving image data;
inserting said entry point between said packets of said digital moving image data to form a data bit stream; and
recording said data bit stream on said recording medium.
1 Assignment
0 Petitions
Accused Products
Abstract
In an image data coding apparatus and method thereof, an image data recording medium, and an image data decoding apparatus and method thereof, in rating mode, the unlimited parts are consecutively reproduced without reproduction of the limited parts. In the case where a rating code has been found within the entry point in reproducing operation, the succeeding image data is not reproduced and the reproducing operation is skipped to the next address which is to be reproduced. During this event, the reproduced image is uninterruptedly displayed as a consecutive image by virtue of a difference between the data rates, and the image data which is following to the entry point to which it has skipped is a GOP which certainly starts from I-picture and, therefore, can be surely reproduced.
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Citations
10 Claims
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1. An image data coding method for recording digital moving image data and digital aural data on a recording medium in a time-division multiplexing manner, comprising the steps of:
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partitioning at least said digital moving image data into packets; detecting an entry point included in a coded image in a frame which is present, by at least one sheet, in said packet; adding a rating code to said entry point, said rating code including start and end addresses of a risque part of said digital moving image data; inserting said entry point between said packets of said digital moving image data to form a data bit stream; and recording said data bit stream on said recording medium. - View Dependent Claims (2)
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3. An image data coding apparatus for recording digital moving image data and digital aural data on a recording medium in a time-division multiplexing manner, said apparatus comprising:
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means for partitioning at least said digital moving image data into packets; means for detecting an entry point included in a coded image in a frame which is present, by at least one sheet, in said packet; means for adding a rating code to said entry point, said rating code including start and end addresses of a risque part of said digital moving image data; means for inserting said entry point between said packets of said digital moving image data to form a data bit stream; and means for recording said data bit stream on said recording medium. - View Dependent Claims (4)
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5. An image data recording medium having recorded digital moving image data and digital aural data thereon in a time-division multiplexing manner, wherein
at least said digital moving image data is partitioned into packets; -
a rating code is added to an entry point included in a coded image in a frame which is present, by at least one sheet, in said packet, said rating code including start and end addresses of a risque part of said digital moving image data; and said entry point is inserted between said packets of said digital moving image data to form a data bit stream, said data bit stream being recorded thereon. - View Dependent Claims (6)
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7. An image data decoding method for reproducing coded image data from a recording medium in which digital moving image data and digital aural data have been recorded with time-division multiplexing, in such a manner that at least said digital moving image data has been partitioned into packets, a rating code has been added to an entry point included in a coded image in a frame which is present, by at least one sheet, in said packet, said rating code including start and end addresses of a risque part of said digital moving image data and said entry point has been inserted between said packets of said digital moving image data to form a data bit stream and said data bit stream being recorded thereon, comprising the steps of:
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reading said data bit stream from said recording medium; detecting at least one entry point from said data bit stream; detecting whether said rating code exists in said entry point; searching for another entry point in said data bit stream if it is determined that said rating code exists in said entry point; reproducing said data bit stream from said recording medium if it is determined that said rating code does not exist in said entry point; and decoding said coded image data from said reproduced data bit stream. - View Dependent Claims (8)
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9. An image data decoding apparatus for reproducing coded image data from a recording medium in which digital moving image data and digital aural data have been recorded with time-division multiplexing, in such a manner that at least said digital moving image data has been partitioned into packets, a rating code has been added to an entry point included in a coded image in a frame which is present, by at least one sheet, in said packet, said rating code including start and end addresses of a risque part of said digital moving image data and said entry point has been inserted between said packets of said digital moving image data to form a data bit stream and said data bit stream being recorded thereon, comprising:
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means for reading said bit stream from said recording medium; means for detecting at least one entry point from said data bit stream; means for detecting whether said rating code exists in said entry point; means for searching for another entry point in said data bit stream if it is determined that said rating code exists in said entry point; means for reproducing said data bit stream from said recording medium if it is determined that said rating code does not exist in said entry point; and decoding said coded image data from said reproduced data bit stream. - View Dependent Claims (10)
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Specification