R&D Center Mr. Ivan Sung has been awarded a patent for "Testing Circuit Board " in Taiwan.
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PTC R&D Center has been awarded a patent for " Wind power charging device with rechargeable battery " in Japan.
PTC R&D Center has been awarded a patent for " Pulse Amplitude Modulation (PAM) method and circuit for improving the performance of a D-Class Audio Amplifier " in Japan.
R&D Center Mr. Newtype Wang has been awarded a patent for " Auto gain control circuit " in USA.
R&D Center Mr. Robert Li has been awarded a patent for " Audio Control Apparatus " in China.
R&D Center Mr. KW Chang have been awarded a patent for " Power Supply Device " in China.
PTC R&D Center has been awarded a patent for " Asynchronous BTL Design For A Class-D Audio Amplifier " in China.
PTC R&D Center has been awarded a patent for "Circuit Testing Apparatus " in Taiwan.
R&D Center Mr. Weison Hou has been awarded a patent for " Music Player Without Memory " in Taiwan.
R&D Center Mr. De-Yu Kao has been awarded a patent for " Method of Using Scan Chains and Boundary Scan for Dynamic Power Saving " in USA.