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:
Aug. 20, 2019
Filed:
Sep. 02, 2016
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Kiyosi Gotou, Hyogo, JP;
Tomohiro Miyake, Mie, JP;
Eiichirou Niikura, Mie, JP;
Kengo Miyamoto, Osaka, JP;
Abstract
A lighting control device includes a bidirectional switch, an inputter, a controller, and a corrector. The bidirectional switch is configured to switch between conduction and non-conduction of a bidirectional current between a pair of input terminals. The inputter is configured to receive a dimming level specifying the magnitude of a light output of a load. The controller is configured to control the bidirectional switch so as to retain the bidirectional switch in an ON state for an on time having a length determined in accordance with the dimming level within a prescribed range in each of half periods of an AC voltage of an AC power supply. The corrector is configured to (i) determine whether or not a target waveform has an anomaly with reference to a prescribed determination condition, and (ii) correct the prescribed range so as to narrow the prescribed range when the target waveform has the anomaly; wherein the target waveform is a waveform of at least one of a voltage and a current input to the pair of input terminals.