Circuit for detecting maximal frequency of pulse frequency modulation and method thereof
US7471117B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2007 |
| Grant date | Dec 30, 2008 |
| Priority date | — |
| Expiry date | Jul 4, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R29/0273
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The circuit for detecting the maximal frequency of the pulse frequency modulation includes an oscillator-controlling unit, a delay circuit and a master-slave register. The oscillator-controlling unit is connected to an oscillator, which generates the pulse frequency modulation signals, and includes a first-half pulse-generating module and a second-half pulse-generating module. The delay circuit is connected to the second-half pulse-generating module. The master-slave register includes a clock, an input end and an output end, wherein the input end is connected to the oscillator-controlling unit, and the clock is connected to the delay circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.