Decoding device and method
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorTAKAHIRO KAWAI
Life of this patent
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Abstract
There is provided a decoding device comprising a unit for checking whether an error occurs in pack header information which is extracted from each pack by a pack header information extracting unit, for retrieving pack header information that mostly conforms to a specific standard from a 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 pack header information that mostly conforms to the specific standard to enable a packet header detecting unit to detect the packet header.
Claims7
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;
- and
- decoding means for decoding the coded data extracted by said coded data extracting means.
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 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;
- 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;
- packet header information extracting means for extracting packet header information contained in the packet header;
- a packet header information database for storing at least a piece of reference packet header information that conforms to a specific standard;
- 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;
- means for checking whether an error occurs in the packet header information extracted by said packet header information extracting means, for retrieving a piece of reference packet header information that mostly conforms to the specific standard from said packet header information database if the extracted packet header information has an error, and for replacing the extracted packet header information having an error with the reference packet header information that mostly conforms to the specific standard to enable said coded data extracting means to extract the coded data;
- and
- decoding means for decoding the coded data extracted by said coded data extracting means.
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 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;
- 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;
- 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;
- coded-data-specific information extracting means for extracting coded-data-specific information other than the coded data, which is associated with the coded data, from the coded data region separated by said coded data extracting means;
- a coded-data-specific information database for storing at least a piece of reference coded-data-specific information that conforms to a specific standard;
- decoding means for decoding the coded data extracted by said coded data extracting means;
- and
- means for checking whether an error occurs in the coded-data-specific information extracted by said coded-data-specific information extracting means, for retrieving a piece of reference coded-data-specific information that mostly conforms to the specific standard from said coded-data-specific information database if the extracted coded-data-specific information has an error, and for replacing the extracted coded-data-specific information having an error with the reference coded-data-specific information that mostly conforms to the specific standard to enable said decoding means to decode the coded data.
Dependencies are inferred from the claim text.