Patent ID: 7957422
Filing Date: 2011-06-07
Classification: H04N

Abstract:
1. A demultiplexer for extracting effective payloads from an input stream formed by a plurality of packets including a first packet and a plurality of subsequent packets subsequent to the first packet, the first packet including a packet header and a payload, and each of the subsequent packets including a packet header and a payload, the demultiplexer comprising: a packet header detection section for sequentially detecting packet headers of the plurality of packets in the input stream; a payload separation section for sequentially separating payloads included in the plurality of packets based on detection results of the packet header detection section; a buffer memory for sequentially storing the payloads separated by the payload separation section; and a memory control section for performing storage control of the payloads in the buffer memory and output permission control of the payloads from the buffer memory based on detection results of the packet header detection section, wherein: when the packet header detection section has detected the packet header of the first packet without error, when the memory control section determines that the packet header detection section has misdetected the packet header of the first packet, the memory control section controls the payload of the first packet which is erroneously separated by the payload separation section not to be stored in the buffer memory.