Patent · US Active

Frequency modulation of clocks for EMI reduction

US8400230B2 · kind B2 · utility

1Cited by

4References

25Claims

0Family size

Assignee

AKROS SILICON, INC. · US

Inventors

Philip John Crawley · Sacramento, US
Kenneth W. Taylor

Key dates

Filing date	Jul 31, 2009
Grant date	Mar 19, 2013
Priority date	—
Expiry date	Nov 26, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG06F1/04
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

In an electronic system, a frequency modulator manages clock signals for electromagnetic interference (EMI) reduction. The illustrative frequency modulator comprises a core oscillator, and a clock divider coupled to the core oscillator that modulates frequency of the core oscillator and deterministically spreads clock spectral components of a digital clock signal whereby electromagnetic interference (EMI) is reduced. The frequency modulator further comprises a circuit coupled to the clock divider that receives the digital clock signal, combines the digital clock signal with a data bitstream for transmission across an isolation barrier, and resynchronizes to the digital clock signal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.