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. 17, 2001
Filed:
Aug. 25, 1999
Noboru Imao, Kakamigahara, JP;
Pacific Industrial Co. Ltd., , JP;
Abstract
A tire air pressure monitoring system includes transmitters and a receiver. The transmitters wirelessly transmit data regarding the inner pressure of tires and the receiver receives the data from the transmitters. Each transmitter has its own ID code and includes a pressure sensor for measuring the inner pressure of the corresponding tire. Every time each pressure sensor measures the pressure, the corresponding transmitter generates a time interval by performing a pseudorandom number calculation based on the measured pressure and its ID code. The pressure sensor will measure the pressure each time the obtained time interval elapses. When each pressure sensor measures the pressure for a predetermined number of times, the corresponding transmitter wirelessly transmits data. This system prevents the transmitters from interfacing with one another and facilitates the manufacture of the transmitters.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile