PTC has been awarded "Calibration Loop, Filter Circuit and Related Method Capable of Automatically Adjusting Center Frequency of a Filter" in Japan.
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PTC has been awarded "Oscillation Circuit, Timing Device, and Electronic System Utilizing the Same" in USA.
PTC has been awarded "Zero-temperature Coefficient Voltage or Current Generator" in USA.
PTC has been awarded "Method for Measuring Transconductance" in USA.
PTC has been awarded "Data Compression Method and Apparatus for Image Display Based on Overdrive" in China.