US Patent No. 10,397,997

DIMMING CONTROLLERS AND DIMMING METHODS CAPABLE OF RECEIVING PWM DIMMING SIGNAL AND DC DIMMING SIGNAL


Patent No. 10,397,997
Issue Date August 27, 2019
Title Dimming Controllers And Dimming Methods Capable Of Receiving Pwm Dimming Signal And Dc Dimming Signal
Inventorship Chun Hsin Li, Zhubei (TW)
Wei Cheng Su, Zhubei (TW)
Hung Ching Lee, Zhubei (TW)
Chung-Wei Lin, Zhubei (TW)
Assignee LEADTREND TECHNOLOGY CORPORATION, Zhubei, Hsinchu County (TW)

Claim of US Patent No. 10,397,997

1. A dimming controller for dimming a light-emitting device, comprising:an input node for receiving a dimming signal;
a type identifier connected to the input node, for identifying whether the dimming signal is of a first type or a second type;
a signal converter connected to the input node, for generating a first signal in response to the dimming signal, wherein the first signal is of the first type; and
a multiplexer controlled by the type identifier, having two inputs receiving the first signal and the dimming signal respectively, wherein the type identifier makes the multiplexer forward the first signal to a driver driving the light-emitting device if the dimming signal is identified as the second type, and the dimming signal to the drive if the dimming signal is identified as the first type.