Apparatus providing a clock signal for a digital television receiver in response to a channel change
US5175626A · kind A · utility
11Cited by
4References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 25, 1991 |
| Grant date | Dec 29, 1992 |
| Priority date | — |
| Expiry date | Jul 25, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/4384
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A high definition television receiver including digital signal processing circuits receives a high definition television signal containing narrowband high priority information from which a system clock is derived, and low priority wideband information. After a channel change, a clock signal developed from narrowband information associated with the previously tuned channel is used as the receiver clock until a clock signal with a desired phase characteristic is developed from the narrowband information of the newly tuned channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.