Tire pressure detection side receiving circuit and tire...

Details Tire pressure detection side receiving circuit and tire... Tire pressure detection side receiving circuit and tire...

2008-01-22

2008-01-22

Lefkowitz, Edward (Department: 2855)

Measuring and testing

Tire, tread or roadway

C340S447000

Reexamination Certificate

active

07320247

ABSTRACT:
A tire pressure detection side receiving circuit includes an antenna resonance circuit having an antenna, a capacitor and a coil, a capacitance changing circuit for changing a capacitance of the capacitor, an oscillation circuit capable of imparting a test wave to the antenna resonance circuit, a resonance level detector capable of detecting a resonance level of the antenna resonance circuit, a memory storing preset reference frequency, a resonance frequency detector changing a frequency of the test wave to be imparted to the antenna resonance circuit while the capacitor of the antenna resonance circuit is maintained at a constant capacitance, thereby detecting, as a measured resonance frequency, a frequency in a case where an amplitude level of the test wave has reached a peak, and a tuning control controlling the capacitance changing circuit and changing the capacitor capacitance so that the measured resonance frequency is approximated to a reference frequency.

REFERENCES:
patent: 3810090 (1974-05-01), Davis et al.
patent: 6535116 (2003-03-01), Zhou
patent: 6788192 (2004-09-01), Shimura
patent: 6791457 (2004-09-01), Shimura
patent: 2003/0107483 (2003-06-01), Kano
patent: 2007/0089525 (2007-04-01), Momose et al.
patent: A 2000-348147 (2000-12-01), None
patent: A 2005-119370 (2005-05-01), None

Affiliated with

Also associated with

Rating

Tire pressure detection side receiving circuit and tire... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tire pressure detection side receiving circuit and tire..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tire pressure detection side receiving circuit and tire... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2795193