Method for determining identifiers of segments forming an audiovisual document and receiver implementing the method
AssigneeThomson Licensing
InventorsLouis Chevallier, Jean-Ronan Vigouroux, Hassane Guermoud
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Abstract
The invention relates to a method for determining identifiers associated with segments of a document. Each segment consists of a series of individual elements such as images or sound sequences. Each segment of the document is subdivided into a determined number of portions comprising the same number of individual elements. An individual element is extracted from the most central portion of each segment and associated with the segment as identifier. The invention also relates to the receiver capable of implementing the method.
Claims8
Method for determining a plurality of identifiers associated with segments of a document, each segment consisting of a series of individual elements such as images or sound sequences;
- comprising the following steps:
- sequential processing of the individual elements of each segment and storage of individual elements in a determined number of memories,
- subdivision of each segment into a number of portions comprising the same number of individual elements, the number of portions being equal to the number of memories plus one unit,
- determination of an individual element in each segment, this individual element being extracted from the memory associated with the most central portion of the segment,
- association of each duly determined identifier with the associated segment, and wherein the step of storage of individual elements is performed in a shift register comprising said memories, the storage consisting in shifting the content of the memories from the first to the last memory, the first memory receiving the individual element currently being processed, the content of the last memory of the register containing the identifier of the segment at the time of the detection of the last individual element of this segment,
- the storage step taking place when the index of the individual element in the last memory is less than or equal to the result of the integer division of the index of the individual element currently being processed by the number of portions, multiplied by the result of the integer division of the number of portions by two.
Audiovisual receiver comprising a central processing unit, a storage means, and a means for subdividing said document into a plurality of segments, each segment consisting of a series of individual elements, such as images or sound sequences;
- characterized in that the subdividing means sequentially processes the individual elements of each segment to subdivide each segment into a determined number of portions comprising the same number of individual elements, said storage means allows for the storage of individual elements in a determined number of memories,
- the receiver also comprising a means for determining an individual element in each segment, this individual element being extracted from the most central portion of the segment and associated with the segment as identifier,
- wherein the storage means comprises a shift register, the number of memories of which is equal to the number of portions minus one unit, the individual elements being successively processed within the segment,
- the storage of individual elements in the shift register consisting in shifting the content of the memories from the first to the last memory, the first memory receiving the individual element currently being processed, the content of the last memory of the register containing the identifier of the segment at the time of the detection of the last individual element of that segment,
- the storage taking place when the index of the individual element in the last memory is less than or equal to the result of the integer division of the index of the individual element currently being processed by the number of portions, multiplied by the result of the integer division of the number of portions by two.
Dependencies are inferred from the claim text.