Wei Jin Zhao

US Patent:

6553225, Apr 22, 2003

Filed:

Oct 14, 1999

Appl. No.:

09/417592

Inventors:

Wei Zhao - Germantown MD 20874
David Roos - Boyds MD 20841

International Classification:

H04Q 720

US Classification:

455427, 455429, 455430, 455 121, 370443, 370348, 370508

Abstract:

An apparatus and method, for use in a satellite-based communications network, for positioning offset zones in a spot beam coverage area to maximize call duration. The apparatus and method employs a spot beam segregator and an offset zone arranger. The spot beam segregator segregates a coverage area of a spot beam generated by a satellite in the network into at least one offset zone based on respective propagation time periods required for signals to travel between the satellite and respective different locations in the coverage area. The offset zone arranger arranges each offset zone such that each respective center of each one offset zone overlaps a respective geographical location in the coverage area, with each respective geographic location having a respective access terminal density greater than any other geographical region within its respective offset zone. The burst offset to be assigned to each single-offset zone is then determined based on the propagation delay at each respective highest access terminal density region in the respective zones. Therefore, within each offset zone, the amount of access terminals whose guard time between bursts received and transmitted is optimized, and call duration is effectively maximized.

US Patent:

6996372, Feb 7, 2006

Filed:

Jun 28, 2002

Appl. No.:

10/185256

Inventors:

Anthony Noerpel - Lovettsville VA, US
Wei Zhao - Germantown MD, US
Fei Yang - Columbia MD, US
Kennon Cogdell - Rockville MD, US

Assignee:

Hughes Electronics Corporation - El Segundo CA

International Classification:

H04B 7/185

US Classification:

455 671, 455 121, 455434, 455435

Abstract:

A method is presented describing how information and data is exchanged between a user's access terminal's mobility management and radio resource software layer in a satellite based telecommunications system, wherein the telecommunication system comprises one or more satellites, new and existing gateways, and a user's access terminal, which comprises a mobility management and radio resource software layer, the method pertaining to data and information flow between them, in response to various stimuli and conditions as the user enters into and out of various modes of operations, including deactivation, activation and illumination of a dark beam of a spot beam that is a shared resource.

US Patent:

7058403, Jun 6, 2006

Filed:

Jun 28, 2002

Appl. No.:

10/185277

Inventors:

Wei Zhao - Germantown MD, US
Anthony Noerpel - Lovettsville VA, US
Abheek Saha - New Delhi, IN
Sandeep Verma - New Delhi, IN
Tom Peters - Dayton MD, US

Assignee:

Hughes Network Systems, LLC - Germantown MD

International Classification:

H04Q 7/20

US Classification:

4554351, 455427, 455 121, 455428, 455430, 455429, 455 132, 455437, 370316, 709203, 709105

Abstract:

A state transition diagram is presented for a user's access terminal for a satellite telecommunication system, showing the state of the access terminal's mobility management software layer, in response to various stimuli and conditions as the user enters into and out of various modes of operations, including deactivation, activation and illumination of a dark beam of a spot beam that is a shared resource.

US Patent:

20030050072, Mar 13, 2003

Filed:

Jun 26, 2002

Appl. No.:

10/183838

Inventors:

Anthony Noerpel - Lovettsville VA, US
Wei Zhao - Germantown MD, US
Sandeep Verma - New Delhi, IN
Mark Quinn - Gaithersburg MD, US
Van Hudson - Columbia MD, US
Abheek Saha - New Delhi, IN

International Classification:

H04Q007/20

US Classification:

455/452000, 455/427000, 455/012100, 455/450000

Abstract:

A system and method is presented for the illumination of a dark beam when a new access terminal enters into the spot beam, and requests, through an existing gateway, the new service of a new gateway. New messages and system information elements and methods for using them are described to facilitate the illumination of the dark beam, the darkening of an illuminated beam, and situations when incomplete requests are received and when a dark beam cannot be illuminated.

US Patent:

6332069, Dec 18, 2001

Filed:

Feb 10, 1999

Appl. No.:

9/244970

Inventors:

Wei Zhao - Germantown MD
Steven Arnold - Ijamsville MD
Anthony Noerpel - Lovettsville VA
Dave Roos - Boyds MD

Assignee:

Hughes Electronics Corporation - El Segundo CA

International Classification:

H04B 7185

US Classification:

455 121

Abstract:

An apparatus and method, for use in a satellite-based communications network, for minimizing blocking of communication between the network and access terminals resulting from differences in the signal propagation delays for the access terminals due to their different locations within a coverage area serviced by a spot beam generated by a satellite in the network. The apparatus includes a spot beam segregator which segregates a coverage area of the spot beam into at least one coverage zone based on the maximum and minimum propagation delay experienced by access terminals within the coverage area of the spot beam. The apparatus further includes a carrier grouper which groups the carrier into a number of groups corresponding to the number of offset zones, and assigns each carrier group to a respective one of the coverage zones. The number of carriers assigned to each carrier group is proportional to the estimated number of access terminals located in the respective coverage zone to which the carrier group is assigned. The apparatus assigns a respective burst offset to each respective coverage zone so that signals being transmitted by the satellite and access terminals within the coverage zone are transmitted in accordance with the same burst offset.

US Patent:

20220244411, Aug 4, 2022

Filed:

Apr 25, 2022

Appl. No.:

17/727995

Inventors:

- Albany NY, US
Andrew Labella - New Rochelle NY, US
Wei Zhao - East Setauket NY, US

International Classification:

G01T 1/202
G01T 1/164
G01T 1/20
G01T 1/29

Abstract:

Provided is a particle detection device and method of fabrication thereof. The particle detection device includes a scintillator array that includes a plurality of scintillator crystals; a plurality of detectors provided on a bottom end of the scintillator array; and a plurality of prismatoids provided on a top end of the scintillator array. Prismatoids of the plurality of prismatoids are configured to redirect particles between top ends of crystals of the scintillator array. Bottom ends of a first group of crystals of the scintillator array are configured to direct particles to a first detector of the plurality of detectors and bottom ends of a second group of crystals of the scintillator array are configured to direct particles to a second detector substantially adjacent to the first detector.

US Patent:

20230016122, Jan 19, 2023

Filed:

Dec 23, 2021

Appl. No.:

17/560529

Inventors:

- Santa Clara CA, US
Hans-Joachim L. Gossmann - Summit NJ, US
Dennis Rodier - Francestown NH, US
Stanislav S. Todorov - Topsfield MA, US
Richard White - Newmarket NH, US
Wei Zhao - Lexington MA, US
Wei Zou - Lexington MA, US
Supakit Charnvanichborikarn - Gloucester MA, US

Assignee:

Applied Materials, Inc. - Santa Clara CA

International Classification:

C23C 14/54
H01J 37/304
C23C 14/48
H01J 37/317
H01L 29/06

Abstract:

A method of operating a beamline ion implanter may include performing, in an ion implanter, a first implant procedure to implant a dopant of a first polarity into a given semiconductor substrate, and generating an estimated implant dose of the dopant of the first polarity based upon a set of filtered information, generated by the first implant procedure. The method may also include calculating an actual implant dose of the dopant of the first polarity using a predictive model based upon the estimated implant dose, and performing, in the ion implanter, an adjusted second implant procedure to implant a dopant of a second polarity into a select semiconductor substrate, based upon the actual implant dose.

US Patent:

20200326434, Oct 15, 2020

Filed:

Jun 12, 2020

Appl. No.:

16/899636

Inventors:

- Albany NY, US
Andrew Labella - New Rochelle NY, US
Wei Zhao - East Setauket NY, US

International Classification:

G01T 1/202
G01T 1/164
G01T 1/20
G01T 1/29

Abstract:

Provided is are a particle detection device and method of fabrication thereof. The particle detection device includes a scintillator array that includes a plurality of scintillator crystals; a plurality of detectors provided on a bottom end of the scintillator array; and a plurality of prismatoids provided on a top end of the scintillator array. Prismatoids of the plurality of prismatoids are configured to redirect particles between top ends of crystals of the scintillator array. Bottom ends of a first group of crystals of the scintillator array are configured to direct particles to a first detector of the plurality of detectors and bottom ends of a second group of crystals of the scintillator array are configured to direct particles to a second detector substantially adjacent to the first detector.

Address:

1047 58 St, Brooklyn, NY 11219

Phone:

6467076911

VIN:

5TDKK3DC0CS259484

Make:

TOYOTA

Model:

SIENNA

Year:

2012