Method and apparatus for presenting video data in synchronization with text-based data
First Claim
Patent Images
1. A method for presenting video data in synchronization with text-based data, comprising the steps of:
- generating video presentation reference time synchronized with program clock reference (PCR) included in a video data stream reproduced from a recording medium;
generating text presentation reference time by adding an offset value to the video presentation reference time; and
presenting the video data stream and text-based data simultaneously, the video data stream being presented based on the video presentation reference time and the text-based data being presented based on the text presentation reference time.
1 Assignment
0 Petitions
Accused Products
Abstract
A method and apparatus for presenting video data recorded on a recording medium in synchronization with text-based data is disclosed. The video data recorded on the recording medium is reproduced and presented based on video presentation reference time synchronized with program clock reference (PCR) included in the video data and the text-based data is presented based on text presentation reference time. If the presentation position of the video data changes discontinuously, the text presentation reference time as well as the video presentation reference time is adjusted accordingly.
101 Citations
19 Claims
-
1. A method for presenting video data in synchronization with text-based data, comprising the steps of:
-
generating video presentation reference time synchronized with program clock reference (PCR) included in a video data stream reproduced from a recording medium;
generating text presentation reference time by adding an offset value to the video presentation reference time; and
presenting the video data stream and text-based data simultaneously, the video data stream being presented based on the video presentation reference time and the text-based data being presented based on the text presentation reference time. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method for presenting video data in synchronization with text-based data, comprising the steps of:
-
presenting video data recorded on a recording medium in synchronization with text-based data, the video data being presented based on video presentation reference time and the text-based data being presented based on text presentation reference time; and
resetting the text presentation reference time if the presentation position of the video data changes discontinuously. - View Dependent Claims (9, 10, 11, 12, 13, 14)
-
-
15. An apparatus for presenting video data in synchronization with text-based data, comprising:
-
a first means for generating video presentation reference time synchronized with program clock reference included in a video data stream reproduced from a recording medium;
a vide decoder for decoding the video data stream based on the video presentation reference time;
a second means for generating text presentation reference time by adding an offset value to the video presentation reference time;
a text decoder for decoding the text-based data based on the text presentation reference time; and
a mixer for mixing the output of the video decoder with the output of the text decoder. - View Dependent Claims (16, 17, 18, 19)
-
Specification