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Wen T Lin: System and method of detecting a phase, a frequency and an arrival-time difference between signals. Keystone Semiconductor, Fox Rothschild, Richard C Woodbridge, December 29, 2009: US07639048 (4 worldwide citation)

A system and method for detecting a phase and a frequency and an arrival-time difference between two signals (118 and 120) that minimizes delay and jitter, and has stable operation even when the two signals (118 and 120) are essentially identical. The system includes two single-ended charge-pump (18 ...


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Wen T Lin: Depletion-mode MOSFET circuit and applications. Keystone Semiconductor, Fox Rothschild, Richard C Woodbrigde, Perry M Fonseca, October 19, 2010: US07817459 (3 worldwide citation)

Positive logic circuits, systems and methods using MOSFETs operated in a depletion-mode, including electrostatic discharge protection circuits (ESD), non-inverting latches and buffers, and one-to-three transistor static random access memory cells. These novel circuits supplement enhancement-mode MOS ...


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Chao Tung Yang: Wireless audio frequency playing apparatus and wireless playing system using the same. KeyStone Semiconductor, Jianq Chyun IP Office, April 8, 2014: US08693951

A wireless audio frequency playing apparatus and a wireless playing system using the same are provided. The wireless playing system includes a wireless remote controller and the wireless audio frequency playing apparatus. The wireless audio frequency playing apparatus is operated under control of th ...


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Shao Hsuan Hung, Shih Wei Chang: Apparatus for synchronization of audio data and visual data and method therefor. KeyStone Semiconductor, Jianq Chyun IP Office, July 15, 2014: US08781048

An apparatus for synchronizing audio data and visual data and a method therefor are provided. The apparatus includes a splitter, a synchronization unit coupled to the splitter, an audio control unit coupled to the splitter and the synchronization unit, and a visual data processing unit coupled to th ...


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Chung Jung Huang, Tsai Sheng Kao: Method for calculating equal error protection profiles. KeyStone Semiconductor, Jianq Chyun IP Office, November 3, 2009: US07613269

A method for calculating equal error protection (EEP) profiles is disclosed. The method uses a profile function related to a sub-channel size to calculate EEP profiles and then uses the EEP profiles to decode data. When a receiver receives a protection level and a size value of the sub-channel size, ...


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Lin Wen T: Arrival-time locked loop. Keystone Semiconductor, dengqi, July 2, 2008: CN200680024439

This patent disclosure presents circuits, systems and methods to produce a stable signal from a reference signal source. These new inventions are far better than the current technologies to provide a stable signal with less phase noises. This new invention also provides a new approach to analyze the ...


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Lin Wen T: Spread spectrum clock generator using arrival locked loop technology. Keystone Semiconductor, June 17, 2009: EP2070230-A2

A new technique using arrival locked loop technology to produce a spread spectrum clock signal with random frequency modulation and with precise variable frequency spread is presented. The arrival locked loop includes three modules, the arrival comparator with a precise spread control, the loop filt ...


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Lin Went T: Depletion-mode MOSFET circuits and applications. Keystone Semiconductor, February 23, 2011: EP2287908-A2

Positive logic circuits, systems and methods using MOSFETs operated in a depletion-mode, including electrostatic discharge protection circuits (ESD), non-inverting latches and buffers, and one-to-three transistor static random access memory cells. These novel circuits supplement cnhancement-modc MOS ...


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Wen T Lin: System and Method of Detecting a Phase, a Frequency and an Arrival-Time Difference Between Signals. KEystone Semiconductor, Synnestvedt Lechner & Woodbridge, June 26, 2008: US20080150588-A1

A system and method for detecting a phase and a frequency and an arrival-time difference between two signals (118 and 120) that minimizes delay and jitter, and has stable operation even when the two signals (118 and 120) are essentially identical. The system includes two single-ended charge-pump (18 ...