TV signal filter and filtering method
US9007529B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2014 |
| Grant date | Apr 14, 2015 |
| Priority date | — |
| Expiry date | Jun 26, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/42607
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A filtering system includes a first filtering module, which includes a first frequency translating device and a first filter. The first frequency translating device includes a center frequency control end that receives a first control signal and an input end that receives an input signal, and performs a first frequency translation on the input signal by utilizing a first control frequency of the first control signal as a center frequency. The first filter performs a first filter on the input signal according to equivalent impedance of a circuit coupled to the input end, and generates in collaboration with the first frequency translating device a first filtered input signal at an output end of the filtering system. The equivalent impedance determines a bandwidth of the first filtered input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.