Analogue signal processing circuit
US6546150B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 2, 1997 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | Dec 2, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N25/75
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An object of the invention is to enable not only to select an ODD signal and an EVEN signal on the same timing but also to set up a duty ratio of the ODD-signal component to the EVEN signal component to be 50%.The purposes are attained by use of a constitution wherein on an analogue signal processing circuit for processing the ODD-signal and the EVEN-signal divided from an output image signal produced from a CCD-type sensor to have the same phase which are then digitized by a singular A/D converter, a sample-hold circuit driven by a control signal during a CCD clock pulse period is provided in a correlated dual sampling circuit, which deals with the EVEN-signal, additionally with respect to another correlated dual sampling circuit, which deals with the ODD-signal, to shift a phase of the EVEN signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.