Method and apparatus for generating an optimized reference current threshold
US7501898B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 10, 2005 |
| Grant date | Mar 10, 2009 |
| Priority date | — |
| Expiry date | Sep 4, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45136
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In one embodiment, apparatus is provided with current optimization logic, a programmable current source for generating a reference current threshold, and current programming logic. In response to a plurality of input pulses received by a first TIA, the current optimization logic produces a series of digitized current values in response to i) a signal correlated to an output of the first TIA, to ii) a reference signal to which the output of the first TIA is compared. The current programming logic i) programs the programmable current source using ones of the series of digitized current values, until a predetermined condition is met, and then ii) locks the programmable current source to a most recent one of the digitized current values. In response to the reference current threshold, a second TIA produces the reference signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.