Digital/analog television signal receiver using analog signal channel fine-tuning data for setting digital signal channels
US7123310B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 2001 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | Apr 15, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/426
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital/analog television signal receiver includes a tuner which receives television signals in an ATSC system and an NTSC system. An analog television signal in the NTSC system is received by an automatic frequency tuning (AFT) at a time of an automatic pre-setting, and a frequency deviation amount for each receivable channel is detected by a CPU. Upon completion of the automatic pre-setting, the CPU calculates an average value of the frequency of deviation amounts of respective channels, and stores the average value in a memory as fine tuning data. Therefore, channel data is set by utilizing the fine tuning data when receiving a digital television signal in the ATSC system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.