Patent ID: 6331829
Filing Date: 2001-12-18
Classification: H04N

Abstract:
A decoding device for extracting coded data from a sequence of data that forms a hierarchy in which each of a plurality of packs includes at least a packet and each packet includes coded data located within a coded data region thereof, said device comprising:pack header detecting means for detecting a pack header placed at the head of each of the plurality of packs;pack header information extracting means for extracting pack header information contained in the pack header detected by said pack header detecting means;a pack header information database for storing at least a piece of reference pack header information that conforms to a specific standard;packet header detecting means for detecting a packet header placed at the head of each packet contained in each of the plurality of packs based on the pack header information extracted by said pack header information extracting means;means for checking whether an error occurs in the pack header information extracted by said pack header information extracting means, for retrieving a piece of reference pack header information that mostly conforms to the specific standard from said pack header information database if the extracted pack header information has an error, and for replacing the extracted pack header information having an error with the reference pack header information that mostly conforms to the specific standard to enable said packet header detecting means to detect the packet header;packet header information extracting means for extracting packet header information contained in the packet header;coded data extracting means for separating a coded data region from each packet based on the packet header information extracted by said packet header information extracting means, and for extracting coded data from the coded data region; anddecoding means for decoding the coded data extracted by said coded data extracting means.