Video data processing apparatus
AssigneeKabushiki Kaisha Toshiba
InventorTakero Kobayashi
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Abstract
When one video image (e.g., second video image) is blended or synthesized to video image (e.g., main video image), time base correction is made between both video data. A video data processing apparatus comprising a first video generator generating a first video data having an arbitrary frame rate, a second video generator generating a second video data having an arbitrary frame rate different from the first video data, and a synchronization controller using video reproduction time managed by the first video generator as a reference time, and correcting video reproduction time of the second video generator shifted from the reference time by repeatedly using the second video data to obtain frame synchronization.
Claims9
A video data processing apparatus for making time base correction of two video data items when one video image is blended with the other video image, comprising:
- a first video generator generating a first video data having an arbitrary frame rate;
- a second video generator generating a second video data having an arbitrary frame rate different from the first video data;
- and
- a synchronization controller using video reproduction time managed by the first video generator as a reference time, and using repeatedly the second video data when the frame rate of the second video data output from the second video generator is less than that of the first video data;
- and
- a frame generating omitting section omitting (or skipping) a generation of a video frame in the second video generator when video generation time of the second video generator is delayed from video generation time of the first video generator.
A video data processing method applied to a video data processing apparatus having a first video generator, a second video generator including a graphic controller, and the video data processing apparatus for making time base correction of two video data items when one video image is blended with the other video image, the video data processing method comprising the steps of:
- generating by the first video generator, a first video data having an arbitrary frame rate;
- generating by the second video generator, a second video data having an arbitrary frame rate different from the first video data;
- using video reproduction time managed by the first video generator as a reference time in the second generator, and using repeatedly the second video data when the frame rate of the second video data output from the second video generator is less than that of the first vide data;
- and
- omitting (or skipping) a generation of a video frame in the second video generator when video generation time of the second video generator is delayed from video generation time of the first vide generator under the control of the graphics controller.
Dependencies are inferred from the claim text.