Patent ID: 6618446
Filing Date: 2003-09-09
Classification: H04N

Abstract:
A data reconstruction apparatus comprising:a first detector to detect a first start code added to a header of an input first MPEG (Moving Picture Experts Group) bitstream including at least one elementary layer bitstream made of an upper layer bitstream and a plurality of lower layer bitstreams that follow the upper layer bitstream, thus generating a first start code detection signal; a first controller to generate control packets when the first controller judges, in response to the first detection signal, that the detected first start code is an upper layer start code added to a header of the upper layer bitstream, the control packets carrying information on reconstruction of original data that has been coded into the lower layer bitstreams, software for the start code judgement and the control packet generation being installed in the first controller; a processor, having wired-logic circuitry, to process the lower layer bitstreams according to the wired-logic in response to the control packets, thus reconstructing the original data, wherein when the detected first start code is judged as a lower layer start code added to each header of the lower layer bitstreams that follow the upper layer bitstream, the processor processes the lower layer bitstreams in response to control packets already generated by the first controller; and wherein only the lower layer bitstreams are transferred to the processor when the first controller further judges that the detected first start code is not added to a header of video data of one picture carried by the lower layer bitstreams.