Device and method for calculating a brightness signal
US5861926A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 27, 1997 |
| Grant date | Jan 19, 1999 |
| Priority date | — |
| Expiry date | Jun 27, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/85
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a digital image processing system, for example, video cameras, digital cameras, cathode ray tubes (CRT) etc. With reference to the calculation of the brightness signal, the main idea of the present invention is to carry out the calculations of it by using only the additions, the subtractions and the shifts, which require relatively short operation times, without the multiplications and divisions by substituting only the shift operations of the digits for them. Also, according to the present invention, high resolution is accomplished by a high speed process in calculating the brightness of an image signal. Also, it enables high speed digital image processing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.