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:
Nov. 01, 2016
Filed:
Jun. 07, 2011
Masami Suzuki, Fujimino, JP;
Masami Suzuki, Fujimino, JP;
PIONEER CORPORATION, Kanagawa, JP;
Abstract
In an impedance matching device between a power transmission circuit and a power transmission antenna, a storage unit stores tables associated with a load value, each storing control values of a coupling coefficient between the power transmission and reception antennae. A selection unit selects a table corresponding to the load value estimated by the load value estimation unit. An adjustment direction determination unit determines the direction of a position for reading out one of the control values from the selected table. A readout position determination unit determines the position for reading out the control value from the selected table based on the direction and a predetermined step width for shifting the position for reading out the control value. A circuit selection unit electrically connects a matching circuit or the through circuit. A control value output unit outputs the control value at the determined position to the selected circuit.