Hong Zhang5 Nutley Dr, Millstone Township, NJ 07726

7485070, Feb 3, 2009

Feb 3, 2006

11/357451

Hong Zhang - Plainsboro NJ, US
Boying B. Zhang - Lawrenceville NJ, US

F16H 57/08

475338, 475347

The invention includes a precision planetary gear system which requires 2:1 gear ratio. The planetary gear system consists of three, or more planet gear assemblies. By adding a local degree of freedom, the planet gear assembly could be tilted relative to the carrier by a spring-loaded annular ring through a spherical feature thus force the three, or more planet gear assemblies symmetrically mesh into the sun gear and internal gear. A couple of elastomeric sleeves are introduced into the connection between the planet housing and the carrier so as to balance the load evenly among the three planet assemblies and to reduce the speed fluctuation of transmitted motion as well as the noise and vibration.

7491114, Feb 17, 2009

Nov 17, 2006

11/600774

Hong Zhang - Plainsboro NJ, US
Boying B. Zhang - Plainsboro NJ, US

B24B 7/24

451 11, 451 42, 451357

A fiber optic polishing apparatus is disclosed including a single degree-of-freedom (DOF) gear transmission system, a pressurizing module, a fixture module, and a housing assembly motorized polisher. The single DOF gear transmission system would enable a fiber optic polishing machine, or polisher to be driven by only one motor, or by human hand. The manual polisher is a unique field polishing machine where electricity or battery is not available or not allowed. Both manual polisher and motorized polisher have the following features: polishing up to four connectors or ferrules simultaneously; adjustable force ensures consistent finish for a wide variety of connector types and the number of connectors in the fixture; quick release for convenient removal of polish fixture; low center of gravity for high stability; small footprint for multiple-machine operation to avoid time-consuming film change.

7515782, Apr 7, 2009

Mar 17, 2006

11/410939

Boying B. Zhang - Lawrenceville NJ, US
Hong Zhang - Plainsboro NJ, US

G02B 6/26
G02B 6/32

385 15, 385 26, 385 33

A two-channel fiber optic rotary joint of this invention can transmit simultaneously optic signals along two optic passes through a single mechanical rotational interface. The first channel of light path consists of a pair of fibers, co-axially fixed in 2 holders respectively. The light signal from one of the fiber can be directly coupled into another fiber. The second channel of light path is off-axis arranged, including a pair of conventional collimators, a pair of first reflecting surfaces and a pair of second reflecting surfaces. The light signal emitted from one of the said conventional collimator will be reflected by one of the said first reflecting surface, one of the said second reflecting surface, another said second reflecting surface, and another said first reflecting surface, then coupled into another said conventional collimator.

7541976, Jun 2, 2009

Oct 20, 2006

11/551685

Hong Zhang - Edison NJ, US
Ali Abdi - New Milford NJ, US

New Jersey Institute of Technology - Newark NJ

G01S 3/02

342461, 342377, 342378

The subject matter disclosed herein relates to techniques for estimating a speed of an object that transmits a signal at a carrier frequency. An apparatus and method disclosed herein includes receiving at an array of multiple antenna elements a radio frequency signal transmitted by a moving object; and estimating a speed of said moving object based, at least in part, on a spatial cross-correlation among characteristics of signals received at individual ones of said multiple antenna elements.

7792400, Sep 7, 2010

May 11, 2006

11/443415

Hong Zhang - Plainsboro NJ, US
Boying B. Zhang - Lawrenceville NJ, US

Princetel Inc. - Pennington NJ

G02B 6/26

385 26, 385 25

A multi-channel off-axis optic slip ring system is disclosed. The invention eliminates the huge number of fiber bundles and photodiodes in most published patents. A couple of conventional optical components such as mirrors and prisms are used to transmit optical signals with high quality and low optic losses. The optical signal pick-up is realized through a pair of prisms mounted on gear transmission systems. It is a true passive, bi-directional rotational optical transmission device which could be used for both multi-mode and single mode fibers without the limitation to the through bore diameters.

7881569, Feb 1, 2011

May 4, 2009

12/434930

Boying B Zhang - Pennington NJ, US
Hong Zhang - Pennington NJ, US

Princetel, Inc. - Pennington NJ

G02B 6/26

385 26, 385115, 385 34

The present invention connects two independent plastic optical fiber channels simultaneously, in which optic signals can be transmitted along two optic passes through a single mechanical rotational interface. The first channel of light path consists of a pair of plastic optic fibers with larger-core, co-axially fixed in 2 holders respectively. The light signal from one of the fiber can be directly coupled into another fiber. A number of smaller-core plastic optic fibers for second channel of light path are circumferentially arranged in the peripheral space of the first channel fibers. They are blind-spot free during rotation and are ideal for machine control applications such as SERCOS Interfaces. The rugged design permits underwater usage. Damaged fibers can be easily replaced without costly repairs of the device itself.

8355424, Jan 15, 2013

Sep 30, 2010

12/894556

Fengjun Xi - Huntington Station NY, US
Lujing Cai - Morganville NJ, US
Hong Zhang - Manalapan NJ, US
Benoit Pelletier - Montreal, CA

InterDigital Patent Holdings, Inc. - Wilmington DE

H04B 1/00

375144, 455 133, 455225, 455515, 700 53, 375299

Method and apparatus for uplink transmission using multiple antennas are disclosed. A wireless transmit/receive unit (WTRU) performs space time transmit diversity (STTD) encoding on an input stream of a physical channel configured for STTD. Each physical channel may be mapped to either an in-phase (I) branch or a quadrature-phase (Q) branch. The WTRU may perform the STTD encoding either in a binary domain or in a complex domain. Additionally, the WTRU may perform pre-coding on at least one physical channel including the E-DPDCH with the pre-coding weights, and transmitting the pre-coded output streams via a plurality of antennas. The pre-coding may be performed either after or before spreading operation.

8355607, Jan 15, 2013

Oct 6, 2010

12/899086

Hong Zhang - Pennington NJ, US
Boying B. Zhang - Pennington NJ, US

Princetel Inc. - Hamilton NJ

G02B 6/26

385 26, 475338

A multi-channel fiber optic rotary joint mechanism has been invented in which optic signals can be transmitted simultaneously from a rotating fiber optic collimator bundle and a stationary fiber optic collimator bundle through an opto-mechanical de-rotating mechanism, which includes an optic de-rotating element, an internal gear and an flexure anti-backlash mechanism. The optic de-rotating element, is positioned in the path between said rotating fiber optic collimator bundle and said stationary fiber optic collimator bundle. The internal gear mechanism provides 2:1 speed ratio for the rotating fiber optic collimator bundle and the optic de-rotating element.