Wen X Lin

US Patent:

6784831, Aug 31, 2004

Filed:

May 5, 2003

Appl. No.:

10/429492

Inventors:

James June-Ming Wang - San Marino CA
Wen Yen Lin - Arcadia CA

Assignee:

TIA Mobile, Inc. - Pasadena CA

International Classification:

G01S 502

US Classification:

34235712, 34235706, 342372, 701213

Abstract:

An improved GPS signal receiver (and corresponding method of operation) includes a plurality of antenna elements each receiving a plurality of GPS signals (e. g. , GPS LI signals or GPS L2 signals). A plurality of mixers (which correspond to the array of antenna elements) and a combining node convert the GPS signals received at the antenna elements in a frequency-division-multiplexed (FDM) manner over FDM frequency bands logically assigned to the antenna elements to produce a composite signal representing such GPS signals. An analog-to-digital converter converts an analog signal derived from the composite signal (which may be an intermediate frequency signal or a baseband signal) into a digital word stream. Demultiplexing logic extracts GPS signal components in the digital word stream. The GPS signal components correspond to the FDM frequency bands logically assigned to the antenna elements.

US Patent:

D511220, Nov 1, 2005

Filed:

Apr 5, 2004

Appl. No.:

29/202800

Inventors:

Wen Chung Lin - Rancho Palos Verdes CA, US

International Classification:

2604

US Classification:

D26 28, D26139

US Patent:

7123876, Oct 17, 2006

Filed:

Nov 1, 2001

Appl. No.:

10/016233

Inventors:

James June-Ming Wang - San Marino CA, US
ChauChin Yang - Los Angeles CA, US
Wen Yen Lin - Arcadia CA, US

Assignee:

Motia - Pasadena CA

International Classification:

H04B 7/14

US Classification:

455 25, 455 133, 455 132, 455 19, 455 634, 4551151, 4551152, 455 121, 342354, 342372, 342373, 342374, 342359, 342757

Abstract:

A low profile, vehicle mounted, in-motion tracking, satellite antenna includes a pair of antenna assemblies mounted in parallel on a rotatable platform. Each antenna assembly includes two subreflectors with a plastic matching element. The outputs of the two antenna assemblies are coupled with a single phase shifter. The combined outputs are retransmitted to a receiver inside the vehicle. The satellite antenna also includes a receiver for receiving channel selection data and/or for providing two-way communication with equipment inside the vehicle. The antennae, transmitter and receiver are self-powered by a storage device which is charged by a wind driven generator. A retractable radome lowers to a lower profile when the antenna is not in use.

US Patent:

7639048, Dec 29, 2009

Filed:

Jul 28, 2005

Appl. No.:

11/815377

Inventors:

Wen T. Lin - Spring House PA, US

Assignee:

Keystone Semiconductor, Inc. - Spring House PA

International Classification:

H03D 13/00

US Classification:

327 3, 327 7

Abstract:

A system and method for detecting a phase and a frequency and an arrival-time difference between two signals ( and ) that minimizes delay and jitter, and has stable operation even when the two signals ( and ) are essentially identical. The system includes two single-ended charge-pump (), phase-frequency detection (PFD) circuits (). The first PFD is stable when a reference signal, supplied to a polarity determining flip-flop, leads the signal to be synchronized. A second, complementary, PFD circuit is stable, but has an inverted polarity output, when the signal to be synchronized, supplied to a polarity determining flip-flop, leads the reference signal. A polarity-selection logic-circuit () ensures that the first activated PFD controls the polarity a single-ended charge pump () for a time-period determined by the delay between the activation of the polarity determining and non-polarity determining flip-flops of the selected PFD.

US Patent:

7817459, Oct 19, 2010

Filed:

Jan 24, 2008

Appl. No.:

12/019391

Inventors:

Wen T. Lin - Ambler PA, US

Assignee:

Keystone Semiconductor Inc. - Spring House PA

International Classification:

G11C 11/00

US Classification:

365154, 365156

Abstract:

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 MOSFET technology and are also intended to improve the reliability of the complementary metal-oxide-semiconductor (CMOS) integrated circuit (IC) products.

US Patent:

8116120, Feb 14, 2012

Filed:

Sep 29, 2010

Appl. No.:

12/893570

Inventors:

Wen T. Lin - Spring House PA, US

International Classification:

G11C 11/00

US Classification:

365154, 365156

Abstract:

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 MOSFET technology and are also intended to improve the reliability of the complementary metal-oxide-semiconductor (CMOS) integrated circuit (IC) products.

US Patent:

20020117692, Aug 29, 2002

Filed:

Feb 27, 2001

Appl. No.:

09/794432

Inventors:

Wen Lin - Rancho Palos Verdes CA, US

International Classification:

F21V029/00

US Classification:

257/235000, 362/267000, 362/310000, 362/800000, 362/249000

Abstract:

The invention is a moisture resistant LED-illuminated vehicle bulb assembly capable of installation into a conventional vehicle incandescent bulb socket. The moisture resistant LED-illuminated vehicle bulb assembly satisfies a long felt need to provided a long life, bright and economic vehicle bulb that can be used as a replacement for incandescent bulb-type lamps or as original equipment in new vehicles. The moisture resistant LED-illuminated vehicle bulb assembly is employable in stop lamps, clearance/marker lamps, as well as combination brake, turn and tail lamps for passenger vehicle lamps and in heavy-duty trucks and trailers.

US Patent:

20090041173, Feb 12, 2009

Filed:

Nov 14, 2006

Appl. No.:

12/093662

Inventors:

Wen T. Lin - Ambler PA, US

International Classification:

H04L 7/00

US Classification:

375374

Abstract:

This patent disclosure presents circuits, systems and methods to extract the clock signal from a data stream. This new invention is far better than the current technologies in the range of frequency locking and tracking. Since the new data clock recovery system is built by digital circuits only, it can be implemented inside an IC easily. This invention is especially helpful for high speed data communication products since the clock can be recovered at full data rate.