Method and apparatus for image processing with an effective line noise correction
US7069460B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 2002 |
| Grant date | Jun 27, 2006 |
| Priority date | — |
| Expiry date | Jan 1, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/409
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing apparatus including an image processing circuit, a frequency dispersion circuit, and a timing signal generator. The image processing circuit processes an image signal, and the frequency dispersion circuit performs frequency dispersion relative to a reference clock signal by continuously modulating an oscillating frequency of the reference clock signal in a predetermined modulation cycle and to generate a frequency dispersion clock signal. The timing signal generator generates a timing signal that controls an operation of the image processing circuit using the frequency dispersion clock signal, in synchronism with the predetermined modulation cycle used for the frequency dispersion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.