The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 19, 2011
Filed:
Nov. 11, 2008
Jay Richard Lory, Chandler, AZ (US);
Alma Stephenson Anderson, Chandler, AZ (US);
Jay Richard Lory, Chandler, AZ (US);
Alma Stephenson Anderson, Chandler, AZ (US);
NXP B.V., Eindhoven, NL;
Abstract
A system and method for synchronizing otherwise independent oscillators private to IC Bus slave devices. An IC Bus master device is capable of issuing two new general call commands, MEASURE PULSE and RESET PRESCALE. The IC Bus slave devices respond to the MEASURE PULSE command by returning a digital count related to the number of ticks its local, private oscillator cycles through during a signal pulse on the IC Bus. All such IC Bus slave devices measure the same signal pulse on the IC Bus, so the differences in the digital measurements returned during the MEASURE PULSE command are proportional to their respective oscillator frequencies. The various digital measurements returned are used to calculate appropriate oscillator prescale factors that will harmonize the final product frequencies of all of the local oscillators on all of the IC Bus slave devices in the system.