Information storage medium, information recording method, information playback method, information recording apparatus, and information playback apparatus
AssigneeKabushiki Kaisha Toshiba
InventorsHiroyuki Kamio, Mitsunori Omokawa
Life of this patent
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Abstract
In an embodiment, a PATS counter synchronized with an SCR superposed on an MPEG-TS is used. When recording the MPEG-TS, a pair of the value of time stamp information (PTS/DTS) of a previously detected picture and the value of the PATS counter are stored (ST500-ST510). When detecting the next time stamp information, an increase in the time stamp information is compared with an increase in the PATS counter (ST512-ST526). If the significant difference is exhibited (YES in ST600), it is determined that an error is found in the time stamp information value, and a recording process is performed (ST530).
Claims20
An information storage medium configured to record a digital stream signal, the information storage medium comprising:
- a data area, wherein the data area is configured to separately record data of the digital stream signal as not less than one object, and wherein the object is configured by not less than one data unit;
- a management area, wherein the management area is configured to record management information of the object;
- and
- when one abnormal GOP is found in the digital stream signal, a dummy data unit is configured to be adopted as the data unit.
A recording apparatus for recording a digital stream signal on an information storage medium, the recording apparatus comprising:
- an internal counter which is synchronized with a system clock reference superposed on the digital stream signal;
- a processor that is configured to store a pair of a value of time stamp information of a previously detected picture and a value of the internal counter when the digital stream signal is recorded;
- wherein the processor is further configured to compare an increase in the time stamp information with an increase in the internal counter upon detection of next time stamp information;
- wherein the processor is further configured to determine an occurrence of an error in the value of the time stamp information when a significant difference is exhibited;
- and
- wherein the processor is further configured to perform a recording process.
A playback apparatus for playing back a digital stream signal stored on an information storage medium, the playback apparatus comprising:
- a processor configured to play back information in the management area;
- and
- wherein the processor is further configured to play back information in the data area that includes a data unit and a dummy data unit.
Dependencies are inferred from the claim text.