Su Yun Huang

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:

8222789, Jul 17, 2012

Filed:

Nov 25, 2009

Appl. No.:

12/592496

Inventors:

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

Assignee:

Silicon Valley Micro M Corporation - San Jose CA

International Classification:

H02K 1/06
H02K 21/12
H02K 1/00
H02K 1/22

US Classification:

310209, 31015635, 310191, 310268

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. The stator assembly pole pieces are movably mounted on the stator mounting plate to improve motor efficiency.

US Patent:

8370087, Feb 5, 2013

Filed:

Aug 15, 2009

Appl. No.:

12/583099

Inventors:

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

Assignee:

Silicon Valley Micro E Corporation - San Jose CA

International Classification:

G01L 1/00

US Classification:

702 44

Abstract:

A bicycle power meter has a strain gauge sensor assembly mounted on a relatively compressible portion of the end of the rear fork of the bicycle frame. The relatively compressible portion is near the rear hub and subject to the forces exerted by the cyclist to the crankset, and transferred via the chain, and sprocket assembly to the hub. The sensor assembly has two ohmically interconnected stretch sensors each having a first layer bearing a variable resistance element, whose resistance changes with displacement of the compressible portion, and a second layer for providing support for the first layer. The sensor assembly is connected in a bridge circuit to two other resistances to generate signals representative of cyclist applied force. These signals are processed along with velocity signals to generate power signals and the power signals are supplied to a display.

US Patent:

8471717, Jun 25, 2013

Filed:

Apr 3, 2010

Appl. No.:

12/798387

Inventors:

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

Assignee:

iMicrodata Corporation - San Jose CA

International Classification:

G08B 13/14
G08B 21/00

US Classification:

340635, 340570, 340540, 3405722

Abstract:

A collective objects management system for objects such as documents contained in file folders in drawers of file cabinets. Each file folder has an electrical circuit with a visible indicator mounted on the file folder. Each folder circuit has an address decoder with a unique system address which generates a VALID signal whenever an incoming address from a source is a match. A local microcomputer and optional encoder receive incoming object identification signals from the source and supplies the desired object address to all the file folders in the cabinet. To aid the user, each file drawer has a visible indicator mounted on the front panel, the panel indicator being illuminated when the sought folder is contained in that drawer. The invention can be applied to a wide variety of collective objects management systems, such as supermarkets, automobile parts distributors, and various manufacturing operations.

US Patent:

8525674, Sep 3, 2013

Filed:

Jun 12, 2010

Appl. No.:

12/802645

Inventors:

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

Assignee:

iMicrodata Corporation - San Jose CA

International Classification:

G08B 13/14
G08B 21/00

US Classification:

340540, 340570, 3405722

Abstract:

A collective objects management system for objects such as documents contained in file folders in drawers of file cabinets. Each file folder has an electrical circuit with a visible indicator mounted on the file folder. Each folder circuit has an address decoder with a unique system address which enables generation of a VALID signal whenever an incoming address from a source is a match, and a circuit for deriving operating power for the address decoder from an incoming address signal. A local microcomputer and optional encoder receive incoming object identification signals from the source and supplies the desired object address to all the file folders in the cabinet. To aid the user, each file drawer has a visible indicator mounted on the front panel, the panel indicator being illuminated when the sought folder is contained in that drawer. The invention can be applied to a wide variety of collective objects management systems, such as supermarkets, automobile parts distributors, and various manufacturing operations.