Patent Document ID: 7756401
Application ID: 11222447

Base Claim:
1. A digital audio-video (AV) information reproducing apparatus for reproducing a file-based AV file, comprising: an instruction interpret unit generating a reproducing signal in response to a user signal, wherein the instruction interpret unit generates a text identification control signal if the user signal containing a text to be searched; an AV index generation unit for analyzing the AV file and generating an AV index, wherein the AV index records relationship of a predetermined time point to a specific logical address of the AV file; a reproducing control unit, connected to the instruction interpret unit and the AV index generation unit, for receiving the reproducing signal, the AV file, and the AV index; a subtitle process module, connected to the reproducing control unit, for processing a subtitle stream outputted from the reproducing control unit; and a data comparison unit, connected to the subtitle process module and the instruction interpret unit, for comparing output of the subtitle process module with the text identification control signal, and providing a setup signal indicating a comparison result including the predetermined time point to the reproducing control unit when the user signal contains the text identification control signal; wherein, the reproducing control unit searches and reproduces a matched part of the AV file corresponding to the predetermined time point based on the AV index and the predetermined time point.

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Claim 6:
6. The digital AV information reproducing apparatus of claim 1 , wherein the subtitle process module comprises: a subtitle interpret unit, connected to the reproducing control unit, for interpreting the subtitle stream into either a text content or a sub-picture content; a text interpret unit, connected to the subtitle interpret unit, for interpreting the text content into a text subtitle; a sub-picture decoder, connected to the subtitle interpret unit, for decoding the sub-picture content into a picture subtitle; and a text recognition unit, connected to the sub-picture decoder, for recognizing the picture subtitle into a subtitle recognition result; wherein the data comparison unit compares the text identification control signal with either the text subtitle or the subtitle recognition result, and sending the setup signal indicating a comparison result back to the reproducing control unit.