Sharing reference data between multiple encoders parallel encoding a sequence of video frames

• Main Authors: Gebler, Charlene Ann, Hall, Barbara A, Ngai, Agnes Yee, Vachon, Michael Patrick
• Format: Patent
• Language: English
• Published: 12.03.2002

This invention relates in general to compression of digital visual images, and more particularly, to a technique for sharing encoded reference data across multiple encoders being employed in parallel to encode each frame of a sequence of video frames. A digital video encode system, method and computer program product are described wherein a picture is divided into multiple active areas that are parallel encoded using multiple encoders. The encoders associated with adjoining active areas of the picture are configured to exchange reference data to facilitate avoiding appearance of a seam between the adjoining active areas of a subsequent picture in a sequence of pictures due to separate encoding thereof by the multiple encoders. The reference data transferred from one encoder to an adjoining encoder is an encoded and decoded section of the picture and is used by the adjoining encoder as an expanded reference area for motion estimation when encoding the subsequent picture.