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:
Feb. 11, 2014
Filed:
Feb. 13, 2012
Shinichi Suzuki, Nagano, JP;
Shingo Takatsuka, Nagano, JP;
Shinichi Suzuki, Nagano, JP;
Shingo Takatsuka, Nagano, JP;
Minebea Co., Ltd., Nagano, JP;
Abstract
An LED driving apparatus comprising: a power feed unit; a driving control unit; a current detection unit that detects load current flowing in an LED module; and an output control unit that determines whether the LED module is under conducting state or opening state, and outputs a signal in accordance with a result of the determination, wherein, when the LED module is under conducting state, the output control unit outputs a first signal to the driving control unit so that the load current is constant, wherein, when the LED module is under opening state, the output control unit outputs a second signal to the driving control unit so that a voltage becomes a predetermined constant-voltage value, and wherein the predetermined voltage value is a voltage or higher, at which the LED module starts conduction, and a voltage or lower corresponding to an upper limit of the LED.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile