Patent ID: 9454900
Filing Date: 2016-09-27
CPC Classification: G08C

Claim Text:
1. A radio wave receiver comprising a receiver controller that performs a signal capturing action in regular or irregular intervals to capture data transmitted on a radio wave from a remote terminal in synchronization with the signal capturing action, wherein the receiver controller includes: a correctness determination unit configured to calculate an error rate or a correctness rate of the data captured by the receiver controller to determine the correctness of the captured data, and a capturing frequency setting unit configured to set a capturing frequency, which indicates the number of times the signal capturing action is performed during a certain period, in accordance with the correctness of the captured data, wherein the receiver controller is configured to capture data of a single frame by the signal capturing action, the correctness determination unit is configured to calculate a bit error rate of the data of the single frame, and the capturing frequency setting unit is configured to increase the capturing frequency when any one of following conditions (a) to (c) is satisfied, (a) in a captured frame, the bit error rate is greater than zero and less than or equal to a reference value; (b) in consecutively captured frames, the bit error rate is greater than zero and less than or equal to the reference value; and (c) among a specified number of consecutively captured frames, the bit error rate is greater than zero and less than or equal to the reference number in a predetermined number of frames; wherein the capturing frequency setting unit is configured to decrease the capturing frequency after increasing the capturing frequency when any one of following conditions (d) and (e) is satisfied, (d) a specified number of consecutively captured frames are correct data; and (e) among a specified number of consecutively captured frames, the bit error rate is greater than zero and less than or equal to the reference value in a predetermined number of frames or less.