Patent ID: 8179089
Filing Date: 2012-05-15
Classification: H02J

Abstract:
1. A power transmission control apparatus in a contactless power transmission system where power is transmitted from a power transmission apparatus to a power reception apparatus by electromagnetically coupling a primary coil and a secondary coil, the power transmission control apparatus comprising: a signal detection circuit that detects a signal induced in the primary coil; and a power transmission control circuit that determines a value of transmission data transmitted from the power reception apparatus by a load modulation, on the basis of an output signal of the signal detection circuit, the power transmission control circuit obtaining detection data by detecting the transmission data on the basis of the output signal of the signal detection circuit at every drive clock cycle of the primary coil, if a value of the detection value being identical n-times continuously, n=m+α≦p , the m being an integer equal to or larger than 0, the α being an integer equal to or larger than 1, and the p being an integer equal to or larger than 1, the power transmission control circuit determining that the value of the transmission data transmitted by the power reception apparatus being the value of the detection data,