Inventors:
Scarlett Wu - Hillsborough CA
Arvind Patwardhan - San Jose CA
Youichi Obana - Tokyo, JP
Assignee:
LSI Logic Corporation - Milpitas CA
International Classification:
H04N 712
H04N 1102
H04N 1104
Abstract:
A method and system for displaying a series of video frames so that picture corruption from video channel underflows is avoided. The method comprises the steps of receiving a data stream with compressed video data for the series of video frames, storing the compressed video data in a channel buffer, processing a video frame if sufficient compressed video data for the video frame is stored in the channel buffer, and displaying a preceding video frame if insufficient compressed video data for the video frame is stored in the channel buffer. The system, which displays a series of video frames, also addresses the issue of video channel underflow. The video frames are received as compressed video data in a data stream that also includes size parameters, such as the vbv. sub. -- delay parameter in the frame headers of MPEG frames, for each video frame in the series of video frames. The system comprises an input for receiving a data stream, a channel buffer for storing the compressed video data, a decoder that decodes the compressed video data and provides the decoded video data to a display device, and an underflow detector that compares the amount of compressed video data in the channel buffer to the required amount of compressed video data.