Scan line to block re-ordering buffer for image compression
US7496235B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 3, 2005 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | May 17, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/60
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A re-order buffer memory in a real-time application such as e.g., an imager. Initially, input data is written into the re-order buffer using a first addressing mode, which causes the data to be stored in a line-by-line manner. Prior to receiving the last line of input data, the stored data is read-out in blocks of data that spans multiples lines in the buffer. This frees up space in the re-order buffer. Subsequently received input data is written into the re-order buffer using a second addressing mode, which stores the newly received data in vertical segments of the re-order buffer whose stored data has already been read-out. Writing/reading of the re-order buffer alternates between the first and second addressing modes. Using this technique, a single buffer may be used to input new data while existing data is being read-out.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.