Circuit and method for gray code to binary conversion
US6809666B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2000 |
| Grant date | Oct 26, 2004 |
| Priority date | — |
| Expiry date | Jan 30, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0068
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image sensor includes a sensor array, a data memory for storing pixel data and a pixel normalization circuit. The sensor array has a two-dimensional array of pixel elements and outputs digital signals as pixel data representing an image of a scene. The pixel data outputted by the sensor array are arranged in a sensor-bit arrangement and the pixel normalization circuit rearranges the pixel data into a pixel-bit order. In another embodiment, an image sensor includes a sensor array, a data memory, and a pixel normalization circuit, all fabricated on a single integrated circuit. The pixel normalization circuit includes one or more of a pixel rearrangement circuit, a Gray code to binary conversion circuit, a reset subtract circuit, and a multiple sampling normalization circuit. Finally, a Gray code to binary conversion circuit is provided for high speed conversion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.