Decoding apparatus and method
US6313767A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2000 |
| Grant date | Nov 6, 2001 |
| Priority date | — |
| Expiry date | Feb 14, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/425
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A decoding apparatus which efficiently stores information to determine an address value to read a decoded value from a decoded value memory. The apparatus performs decoding processing at a high speed, and further, reduces the memory capacity. The apparatus comprises a first storage for continuously storing decoded values for variable-length codes of the same code length; a second storage for storing an initial address in the first storage; a third storage for storing offset values between the initial address in the first storage and addresses for storing decoded values for variable-length codes of respective code lengths, respectively; a first specification unit for specifying a code length of an input variable-length code; a second specification unit for specifying the order of the input variable-length code among variable-length codes belonging to the specified code length; and an address generator for generating an address to read a decoded value from the first storage, based on the offset value corresponding to the code length specified by the first specification unit and the order specified by the second specification unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.