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:
Jan. 24, 2012
Filed:
Aug. 17, 2007
Noriaki Okada, Chiryu, JP;
Hironori Katoh, Anjo, JP;
Hiromichi Naitoh, Okazaki, JP;
Munenori Matsumoto, Kariya, JP;
Masahiro Sugiura, Takahama, JP;
Mitsugi Ootsuka, Kariya, JP;
Akihiro Taguchi, Obu, JP;
Noriaki Okada, Chiryu, JP;
Hironori Katoh, Anjo, JP;
Hiromichi Naitoh, Okazaki, JP;
Munenori Matsumoto, Kariya, JP;
Masahiro Sugiura, Takahama, JP;
Mitsugi Ootsuka, Kariya, JP;
Akihiro Taguchi, Obu, JP;
Denso Corporation, Kariya, JP;
Abstract
When a demodulated signal of a radio signal in Chtransmitted from a TPMS transmitter is acquired, a control IC controls the frequency of a signal inputted from a PLL circuit to a mixer into a frequency for converting a TPMS radio signal into an intermediate frequency signal of a specific frequency. When the demodulated signal of the radio signal transmitted from a portable unit through two frequency channels is acquired, the control IC determines a channel whose state of communication is favorable from between Chand Ch, and controls the signal frequency for conversion into a frequency for converting a keyless radio signal in the determined channel into an intermediate frequency signal.