Abstract
This super high resolution (SHR) video codec system is based on a spatial image division and multiple stream output approach and is implemented with multiple MPEG-2 HDTV Codec LSI's. The encoder has two operation modes, a non-multiplexing mode, and a multiplexing mode. In the non-multiplexing mode, the encoder outputs four constant bit rate transport streams (CBR-TS's) for which it can use two channel-synchronization schemes, system time clock (STC) sharing and sync-marker. In the multiplexing mode, the encoder outputs one CBR-TS comprised of four variable bit rate elementary streams (VBR-ES's), where cooperative operation between the pre-encoder and main-encoder realize adaptive bit allocation between four channels. The encoder also has a video shift and padding function which reduces distortion caused by the image division. These functions enable high-efficiency, high-quality SHR video coding.
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