Variable length encoding system
US6014095A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 29, 1997 |
| Grant date | Jan 11, 2000 |
| Priority date | — |
| Expiry date | Dec 29, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is provided a high speed variable length coding system having a small hardware scale. This variable length coding system includes a variable length code table, a memory for storing quantized DCT coefficients, a section for sequentially coding the read-out quantized DCT coefficients, so as to output a variable length code table address in the case of a variable length code, and a code word and a code length in the case of a fixed length code, a section for coding information to be coded other than the quantized DCT coefficients, so as to output a variable length code table address in the case of a variable length code and a code word and a code length in the case of a fixed length code, a selector for selecting an address for the variable length code, a selector for selecting a code of the fixed length code, a delay circuit for delaying the code of the fixed length code, a selector for selecting one of the variable length code and the fixed length code, and a unit for putting the selected codes in a string so as to form a code string.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.