Jin Ying Zhang

US Patent:

7645997, Jan 12, 2010

Filed:

Sep 26, 2007

Appl. No.:

11/904627

Inventors:

Jin Zhang - Mountain View CA, US
Peter D. Olcott - Stanford CA, US
Craig S. Levin - Palo Alto CA, US

Assignee:

The Board of Trustees of the Leland Stanford Junior University - Palo Alto CA

International Classification:

H01L 25/00

US Classification:

2503701, 25037011, 250371

Abstract:

Improved position estimation for a square photodetector having terminals at its corners is provided by first estimating an event position in a coordinate system aligned with the diagonals of the square, and then performing a coordinate rotation to provide an estimated position in a coordinate system aligned with the sides of the square. These two steps can also be mathematically combined. It is believed that the improved accuracy of this position determination approach is a result of a greater degree of linearity in charge division between terminals along diagonal axes than along orthogonal axes of a square detector. Flood images provided by this method have been compared to flood images provided by the conventional Anger method, and substantially less image distortion is observed with the present method than with the Anger method. This reduced distortion can enable automatic crystal segmentation from raw flood image data, which is particularly beneficial in connection with simplifying positron emission tomography (PET) system calibration.

US Patent:

8619199, Dec 31, 2013

Filed:

Mar 21, 2012

Appl. No.:

13/425914

Inventors:

Jin Zhang - Newark CA, US
Xiaolin Che - Shanghai, CN

Assignee:

Marvell International Ltd. - Hamilton

International Classification:

H04N 5/445

US Classification:

348726, 4552341, 4552342

Abstract:

A demodulator includes an analog to digital converter configured to receive a television signal from a tuner and output a corresponding digitized television signal, where the television signal comprises a digital television signal or an analog television signal. A first gain module is configured to generate, based on the digitized television signal, a first feedback for adjusting the television signal provided to the analog to digital converter by the tuner, where the first feedback is applied to the television signal regardless of whether the television signal is a digital television signal or an analog television signal. A second gain module is configured to generate second feedback for further adjusting the television signal provided to the analog to digital converter by the tuner, where the second feedback is provided to further adjust the television signal only when the television signal is an analog television signal.

US Patent:

20200382971, Dec 3, 2020

Filed:

Aug 20, 2020

Appl. No.:

16/998102

Inventors:

- Mountain View CA, US
Jin Zhang - Mountain View CA, US

International Classification:

H04W 24/02
G06N 3/08
H04W 76/10

Abstract:

The disclosure provides a method of operating a communication network. The method includes receiving input data related to a state of the communication network and determining an implementation policy for the communication network based on the input data. The implementation policy is a set of features for forming one or more communication links in the communication network over a time interval. The one or more communication links includes at least one communication link between a terrestrial terminal and a high-altitude platform terminal. Determining the implementation policy is based at least in part on utility values of previous policies. The utility values of previous policies are derived using simulation and/or real-world implementation of the previous policies. The communication network is then operated to implement the implementation policy in the time interval.

US Patent:

20200196166, Jun 18, 2020

Filed:

Dec 17, 2018

Appl. No.:

16/222550

Inventors:

- Mountain View CA, US
Jin Zhang - Mountain View CA, US

International Classification:

H04W 24/02
H04W 76/10
G06N 3/08

Abstract:

The disclosure provides a method of operating a communication network. The method includes receiving input data related to a state of the communication network and determining an implementation policy for the communication network based on the input data. The implementation policy is a set of features for forming one or more communication links in the communication network over a time interval. The one or more communication links includes at least one communication link between a terrestrial terminal and a high-altitude platform terminal. Determining the implementation policy is based at least in part on utility values of previous policies. The utility values of previous policies are derived using simulation and/or real-world implementation of the previous policies. The communication network is then operated to implement the implementation policy in the time interval;

US Patent:

20190286252, Sep 19, 2019

Filed:

May 31, 2019

Appl. No.:

16/428823

Inventors:

- Tokyo, JP
Hao Chi - San Mateo CA, US
Jin Zhang - San Mateo CA, US
Mark Gadzikowski - San Mateo CA, US
Dustin Boyle - San Mateo CA, US
Jonathan Courney - San Mateo CA, US

International Classification:

G06F 3/0346
G06F 3/01
G06T 19/00
G06F 3/0481

Abstract:

A virtual reality (VR) system supports improved interactive control processes/services. These interactive control processes/services include detecting movement of a controller associated with a virtual reality (VR) environment, determining an angle of rotation based on the movement, determining a magnitude of force associated with the movement, determining a path in the VR environment that corresponds to the angle of rotation and the magnitude of force, and projecting the path in the VR environment.

US Patent:

20190286360, Sep 19, 2019

Filed:

Jun 4, 2019

Appl. No.:

16/431648

Inventors:

- Palo Alto CA, US
Jin ZHANG - Palo Alto CA, US
Radhika VULLIKANTI - Palo Alto CA, US
Abhishek GUPTA - Palo Alto CA, US

International Classification:

G06F 3/06
G06F 16/23
G06F 16/174
H04L 29/08
H04L 29/06
G06F 9/455
G06F 16/25

Abstract:

A logical group of data blocks stored in a first node is migrated to a second node according to a method that includes determining a first metric for each logical group of data blocks stored in the first node, the first metric representing a total size of the data blocks in the logical group, determining a second metric for each logical group of data blocks stored in the first node, the second metric representing a total size of the data blocks in the logical group that are uniquely stored in the first node, and selecting a logical group of data blocks for migration from the first node to the second node based on the first metric and the second metric.

US Patent:

20190215152, Jul 11, 2019

Filed:

Jan 9, 2018

Appl. No.:

15/866185

Inventors:

- Palo Alto CA, US
Xin Li - Fremont CA, US
Haoran Zheng - San Jose CA, US
Eric Knauft - San Francisco CA, US
Jin Zhang - Fremont CA, US
Pascal Renauld - Palo Alto CA, US
Bryan Fink - San Jose CA, US

International Classification:

H04L 9/08
H04L 29/08
G06F 17/30
G06F 21/64

Abstract:

A multi-tenant storage system can store clear text data and associated clear text checksum received from a storage tenant using their associated cryptographic key (“cryptokey”). When the clear text data is compressible, cryptographic data (“cryptodata”) is generated from a concatenation of the clear text checksum and compressed clear text data using the cryptokey. A cryptographic checksum (“cryptochecksum”) is generated from the cryptodata. When the clear text data is uncompressible, cryptographic data (“cryptodata”) is generated by encrypting the clear text data using the cryptokey with an extra verification step to make sure the clear text checksum can be rebuilt during the read request. A cryptographic checksum (“cryptochecksum”) is generated from the cryptodata. The cryptodata and associated cryptochecksum are stored in the multi-tenant storage system, so that repairs to damaged cryptodata can be made using the associated cryptochecksum.

US Patent:

20190215155, Jul 11, 2019

Filed:

Jan 9, 2018

Appl. No.:

15/866278

Inventors:

- Palo Alto CA, US
Jin Zhang - Fremont CA, US
Haoran Zheng - San Jose CA, US
Eric Knauft - San Francisco CA, US
Xin Li - Fremont CA, US
Pascal Renauld - Palo Alto CA, US
Bryan Fink - San Jose CA, US

International Classification:

H04L 9/08
G06F 17/30
H03M 7/30
H04L 9/32
H04L 9/14
G06F 12/14

Abstract:

A tenant's clear text data in a multi-tenant storage system can be encrypted using the tenant's cryptographic key to produce encrypted yet compressible data (“cryptographic data”). The cryptographic data can be encrypted using a system cryptographic key that is managed by the multi-tenant storage system and then stored. Use of the system cryptographic key allows for subsequent maintenance activities such as deduplication and compression to be performed on data stored in the multi-tenant storage system without having to access any of the tenants' cryptographic keys.