O2 Micro, Incorporated

Telefonaktiebolaget Lm Ericsson (Publ)

Optis Cellular Technology, LLC

Unwired Planet International Limited

Rong Hu

Muhammad Ali Kazmi

Stefan Parkvall

Jinhua Liu

Stefan Wager

Rui Fan

Qingyu Miao

Zhang Zhang

Dirk Gerstenberger

Jonas Fröberg Olsson

Niklas Johansson

Arne Simonsson

Peter Larsson

Min Wang

Eva Englund

Yung-Lin Lin

Ke Wang Helmersson

Jiansong Gan

Per Magnusson

Xinyu Gu

Magnus Lundevall

Gunnar Bark

Afif Osseiran

Naoyuki Fujita

Mats Sågfors

Hai Wang

Bengt Lindoff

Mats SÄGFORS

A controller for controlling a light source module including a first LED string and a second LED string includes a power input terminal operable for receiving electric power from a boost converter, a power output terminal operable for providing electric power to the light source module through a buck converter, a first input terminal operable for receiving a first pulse width modulation (PWM) signal, a second input terminal operable for receiving a second PWM signal, and a width monitoring terminal operable for receiving a width monitoring signal indicating a duration of a first state of the first PWM signal and a duration of a first state of the second PWM signal. The controller is operable for turning off the light source module if the width monitoring signal is greater than a width threshold signal.

Controller for controlling a light source module

A controller for controlling a light source module including a first LED array and a second LED array includes a first driving terminal and a second driving terminal. The controller is operable for turning on a switch between a power converter and the first LED array by the first driving terminal to deliver electric power from the power converter to the first LED array in a first sequence of discrete time slots, and for turning on a second switch between the power converter and the second LED array by the second driving terminal to deliver electric power from the power converter to the second LED array in a second sequence of discrete time slots, where the first sequence of discrete time slots and the second sequence of discrete time slots are mutually exclusive.

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Beijing, China

Rong Hu