Patent ID: 8204366
Filing Date: 2012-06-19
Classification: H04N

Abstract:
1. A recording and playback apparatus for recording content data including a content and playing back the content of the content data at a position specified by relative time information indicating a relative time with respect to a start position of the content, the recording and playback apparatus comprising: first recording means for recording the content data; record start time information generation means for generating, using reference time information, record start time information indicating time information associated with a record start position of the content data recorded by the first recording means; second recording means for recording playback control information including content start time information indicating the content start position using the reference time information, the record start time information generated by the record start time information generation means, and a playback control table indicating, for a particular part of the content data recorded by the first recording means, correspondence between the relative time information and first relative position information indicating the amount of data as measured from the start of the content; playback control information reading means for reading the content start time information, the record start time information, and the playback control table recorded by the second recording means; offset value calculation means for calculating an offset value to be used in correction of the first relative position information, using the content start time information, the record start time information, and the playback control table read by the playback control information reading means; identification means for identifying the first relative position information associated with the playback position specified by the relative time information, based on the playback control table read by the playback control information reading means; relative position information correction means for correcting the first relative position information identified by the identification means, based on the offset value calculated by the offset value calculation means, to acquire the second relative position information indicating the amount of data as measured from the record start position of the content data recorded by the first recording means; and playback means for playing back the content data by reading the content data at the playback position, based on the second relative position information acquired via the correction process performed by the relative position information correction means.