Su Jen Huang

US Patent:

6871531, Mar 29, 2005

Filed:

Jun 20, 2003

Appl. No.:

10/601029

Inventors:

Su Shiong Huang - Bellevue WA, US

Assignee:

Silicon Valley Micro C Corporation - San Jose CA

International Classification:

B60C023/02

US Classification:

731463

Abstract:

An external mount tire pressure sensor system which substantially reduces the effect of centrifugal force on tire pressure measurements. A sensor has a main guide body portion with two parallel leg portions each having a central bore. A slider element is slidably mounted in each leg portion, and the two slider elements are mechanically connected for translatory movement in unison. A spring urges the slider elements to a neutral position. The sensor attaches to a tire valve stem. Gas from a tire encounters one of the slider elements and urges it in opposition to the spring force. The differential interconnection between the two slider elements cancels out the effect of the centrifugal force when the wheel rotates. A stiff flexible wall section enables the axis of the sensor to be aligned with the wheel radius to optimize performance.

US Patent:

6959594, Nov 1, 2005

Filed:

Jan 21, 2003

Appl. No.:

10/346490

Inventors:

Su Shiong Huang - Bellevue WA, US

Assignee:

Silicon Valley Micro C Corp. - San Jose CA

International Classification:

G01M017/02

US Classification:

73146, 731462

Abstract:

An external mount tire pressure sensor system with a stretch sensor having a variable resistance longitudinal displacement characteristic. The stretch sensor is coupled to a processor which samples the resistance of the stretch sensor periodically. The sensor body is attached to the external side wall of a pneumatic tire so that the body is displaced by the tire side wall and the resistance is a function of internal tire pressure. When the processor determines that the pressure is below a threshold value, an r. f. generator is activated by the processor to generate a low tire pressure signal. This signal is converted by a receiver to a warning for the driver.

US Patent:

7222523, May 29, 2007

Filed:

Nov 4, 2005

Appl. No.:

11/267775

Inventors:

Su Shiong Huang - Bellevue WA, US
Shengbo Zhu - San Jose CA, US

Assignee:

Silicon Valley Micro C. Corp. - San Jose CA

International Classification:

G01M 17/02

US Classification:

73146, 340442

Abstract:

A battery powered tire pressure sensor system with a high sensitivity stretch sensor assembly having a variable resistance longitudinal displacement characteristic. The stretch sensor assembly has at least two juxtaposed stretch sensors, each with a first layer bearing the variable resistance element and a second support layer. The sensor assembly is mounted on or in the side wall of a pneumatic tire so that the assembly is displaced by the tire side wall and the resistance is a function of internal tire pressure. The assembly is coupled to a processor which samples the resistance of the stretch sensor assembly periodically. When the processor determines that the pressure is outside a safe range, an r. f. generator is activated by the processor to generate an unsafe tire pressure signal. This signal is converted by a receiver to a warning for the driver.

US Patent:

7374105, May 20, 2008

Filed:

Oct 29, 2005

Appl. No.:

11/262089

Inventors:

Shengbo Zhu - San Jose CA, US
Su Shiong Huang - Bellevue WA, US

Assignee:

Magnex Corporation - San Jose CA

International Classification:

G06K 19/06

US Classification:

235492, 235439, 235449, 235493

Abstract:

An RFID tag having an rfid integrated circuit and an antenna is combined with a first passive antenna circuit to provide an extended operating range. The first passive antenna circuit has a first coil and a first capacitor to tune the passive antenna circuit to a resonant frequency the same as the operating frequency of the RFID tag. The first coil has a central opening larger than the size of the antenna. The passive antenna circuit is arranged with the antenna located in the central opening of the coil, preferably in a co-planar manner, to promote inductive interaction therebetween. A second passive antenna circuit essentially identical to the first, but having larger dimensions, is positioned with the coil of the second passive antenna circuit surrounding the first coil to extend the operating range even further.

US Patent:

7503491, Mar 17, 2009

Filed:

Oct 29, 2005

Appl. No.:

11/262074

Inventors:

Shengbo Zhu - San Jose CA, US
Su Shiong Huang - Bellevue WA, US

Assignee:

Magnex Corporation - San Jose CA

International Classification:

G06K 7/08

US Classification:

235451, 235492, 343788, 902 25, 902 26, 3405726, 3405727

Abstract:

A “coil-on-a-chip” RFID tag having an rfid integrated circuit and an antenna contemporaneously formed on a substrate. The antenna is a helical multiple layer, multi-turn coil having an axis of revolution oriented at an angle, preferably ninety degrees, with respect to the major body plane of the rfid integrated circuit. The coil has a central opening with an annular core of magnetically permeable material. The RFID tag has an increased operating range over known ID tags.

US Patent:

7800326, Sep 21, 2010

Filed:

Mar 8, 2008

Appl. No.:

12/075048

Inventors:

Shengbo Zhu - San Jose CA, US
Su Shiong Huang - Bellevue WA, US

Assignee:

Silicon Valley Micro MCorp. - San Jose CA

International Classification:

H02P 6/00

US Classification:

31840016, 31840037, 318 16

Abstract:

A brushless D. C. motor has a rotor with a plurality of magnets secured to a mounting surface. Each magnet has an RFID tag secured to a magnet surface, with each RFID tag having stored therein a unique identification character serving to identify the magnet. A stator has a plurality of pole teeth separated by slots, each pole tooth having a power coil wound thereabout. A plurality of RFID interrogation antennae are mounted adjacent the pole teeth. An RFID reader generates r. f. interrogation signals broadcast by the antennae to the RFID tags. The RFID tags respond by broadcasting the unique identification character whenever an interrogation signal is sensed as the tag enters the region of a pole tooth. This position and magnet identification information is received by the RFID reader, which processes the information and sends it to a motor controller and driver unit, which supplies operating power to the individual power coils. The coils are connected in either a conventional star configuration or individually to the electrical power source to provide improved commutation control of the motor.

US Patent:

8138699, Mar 20, 2012

Filed:

Oct 30, 2009

Appl. No.:

12/589916

Inventors:

Shengbo Zhu - San Jose CA, US
Su Shiong Huang - Bellevue WA, US

Assignee:

Silicon Valley Micro M Corp. - San Jose CA

International Classification:

H02P 23/14

US Classification:

31840014, 31840013, 31840001, 318700

Abstract:

A brushless D. C. disk motor has one or more disk rotor assemblies and pairs of stator assemblies for each rotor assembly. Each disk rotor assembly has a disk and a plurality of permanent magnets distributed along two or more circular paths in the disk inboard of the peripheral edge of the rotor. Each stator assembly has a plurality of pole pieces and coils distributed along a mounting plate in corresponding circular paths. The disk is rotatably mounted to a support member; while the stator sub-assemblies are fixed to the support member. The coils are selectively activated by commutated power control signals generated in response to a vehicle condition parameter, such as vehicle speed or disk motor load, to optimize power drain from the source of electrical power in accordance with the value of the vehicle condition parameter.

US Patent:

8173045, May 8, 2012

Filed:

May 28, 2009

Appl. No.:

12/474174

Inventors:

Zhengwei Shi - Seattle WA, US
Jingdong Luo - Seattle WA, US
Su Huang - Seattle WA, US
Xinghua Zhou - Seattle WA, US

Assignee:

University of Washington - Seattle WA

International Classification:

H01B 1/12
C08F 34/00
C07D 333/00

US Classification:

252500, 526256, 549 80

Abstract:

Diels-Alder crosslinkable dendritic nonlinear optical chromophore compounds, films and crosslinked polymer composites formed from the chromophore compounds, methods for making and using the chromophore compounds, films, and crosslinked polymer composites, and electro-optic devices that include films and crosslinked polymer composites formed from the chromophore compounds.