Jitter processing circuit for digital camera processing
US5287171A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1991 |
| Grant date | Feb 15, 1994 |
| Priority date | — |
| Expiry date | Oct 29, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2209/046
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video camera in which an output signal from a solid-state image sensor is converted into a corresponding digital signal at a horizontal reading cycle of the output signal, and the digital signal is digital-processed with a first predetermined clock (fs) synchronous with the reading cycle to provide a luminance signal and a color difference signal. This video camera comprises data clock converter circuit for latching the color difference signals generated in synchronism with the first clock with a data latch clock synchronous with a second clock (4 fsc) to thereby convert the clock for the color difference signal; a control circuit for detecting the phase of the changing point of the color difference signal to provide a phase detecting signal and supply said data latch clock with which color deference signal is latched synchronously with said second clock (4 fsc) at a stable point after the changing point of the color difference signal generated in synchronism with the first clock (fs); a phase correction circuit for receiving the color difference signal from said data clock converter circuit and producing a phase-corrected color difference signal; and a modulation circuit for qua…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.