Image rotation circuit
US4916746A · kind A · utility
7Cited by
7References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 22, 1989 |
| Grant date | Apr 10, 1990 |
| Priority date | — |
| Expiry date | May 22, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T3/60
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An image rotation circuit comprises a first-in-first-out memory (FIFO) for holding a block of data representing a portion of an image. Data is read out of the FIFO a word at a time, and written back into the FIFO with a displacement of one bit position. Thus, the data effectively travels around a spiral data path, producing a serial output stream. A shift register assembles the output data into words, representing the rotated image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.