Apparatus and method for loss of signal detection in a receiver
US7477077B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2006 |
| Grant date | Jan 13, 2009 |
| Priority date | — |
| Expiry date | Jan 17, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/3565
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An apparatus, device, and method for loss of signal detection in a receiver are provided. A reference circuit is operable to rectify a reference signal. An input circuit is operable to rectify an input signal. A comparator is operable to compare outputs of the reference circuit and the input circuit and to generate an output signal based on the comparison. The output signal indicates whether the input signal falls within threshold limits defined by the reference signal. A second reference circuit and a second input circuit could also be used, and the reference circuits and input circuits can be selectively enabled and disabled based on which of multiple differential pairs is enabled in a receiver receiving the input signal. The differential pairs can be used in the receiver to generate an output signal based on the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.