APPARATUS AND METHOD FOR DISPLAYING RECORDED COMPRESSED DIGITAL HIGH DEFINITION VIDEO INFORMATION

摘要

An apparatus provides digital data representative of a compressed high definition video image signal in a manner such that a conventional video tape recorder (VTR) employing current electrical and mechanical technologies is adaptable for reading this data for display in special modes such as fast forwar d, reverse and still frame. To minimize the loss of data while the VTR is operating in one of these special modes, the data representative of the high definition image signal is decoded by the apparatus to yield available time slots in the data str eam. These time slots are then filled with data which duplicates the most important o f the original transmitted data then existing in other time slots in the data stream. This duplicating of the data increases the likelihood that the important picture info rmation will be read by the VTR while operating in a special mode. To facilitate fast recovery from lost of synchronization, the apparatus utilizes a small fraction o f the original image which is included in each section or slice of the transmitted ima ge. As synchronization is reacquired, the high definition video image is built from the image found in the slices.