21
PTC has been awarded "Patent Awarded- METHOD AND APPARATUS FOR DRIVING LIGHT EMITTING DIODE" in ROC.

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07
PTC has been awarded "GAIN CONTROLLING SYSTEM, SOUND PLAYBACK SYSTEM, AND GAIN CONTROLLING METHOD THEREOF" in Japan.

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23
PTC has been awarded "Amplifier Circuits and Modulation Signal Generating Circuits Therein" in China.

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23
PTC has been awarded "DISPLAY DEVICE, DISPLAY CONTROL DEVICE, AND DISPLAY CONTROL METHOD FOR THE SAME" in ROC.

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23
PTC has been awarded "CURRENT MIRROR CIRCUITS" in ROC.

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23
PTC has been awarded "Patent Awarded- LED Driving Device" in USA.

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02
PTC has been awarded "Voltage Controlling Circuit" in China.

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26
PTC has been awarded "Driving circuits and driving methods thereof" in USA.

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26
PTC has been awarded "Oscillation circuit, timing device, and electronic system utilizing the same" in USA.

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26
PTC has been awarded "LED Driver Apparatus" in USA.

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