System and Method for exciting advanced television signals
US6185255A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1998 |
| Grant date | Feb 6, 2001 |
| Priority date | — |
| Expiry date | Mar 23, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/4446
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An exciter for advanced television signals such as a digital television signal. The exciter corrects for instabilities in the television signal provided to it so as to produce a signal with tightly controlled frequency and reduced co-channel interference. The exciter inserts a pilot frequency into the digital television signal after the signal has been shaped, thereby reducing the difficulties of shaping. Also disclosed is a rate converter for use in an exciter so that a digital signal can be received at a first frequency and can be output at a second frequency in a manner in which the output of a signal is assured even in the absence of an input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.