Yan Li

US Patent:

7110298, Sep 19, 2006

Filed:

Jul 20, 2004

Appl. No.:

10/896096

Inventors:

Farookh Moogat - Fremont CA, US
Yan Li - Milpitas CA, US
Alexander K. Mak - Los Altos CA, US

Assignee:

SanDisk Corporation - Sunnyvale CA

International Classification:

G11C 16/04

US Classification:

36518518, 36518519, 3651852

Abstract:

In a non-volatile memory system, when it is discovered that the voltage pump pulse provided by a charge pump for programming the memory cells does not match a reference voltage, the programming time period of the voltage pump pulse is adjusted to a value that remains substantially unchanged until the end of the programming cycle. In this manner, the fluctuation in the effective programming time period of the programming pulses is prevented for the remainder of the programming cycle so that a broadening of the threshold voltage distribution will not occur or will be reduced. This feature allows a short programming time period to be designated for the programming pulses for enhanced performance, while allowing the flexibility of increased program time period when the charge pump is operating under conditions that causes it to be slow and/or weak.

US Patent:

7383484, Jun 3, 2008

Filed:

Mar 12, 2004

Appl. No.:

10/799231

Inventors:

Nan-Hsiung Yeh - Foster City CA, US
Yan Li - Tucson AZ, US

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

H03M 13/00

US Classification:

714780, 714758

Abstract:

A method of decoding a turbo product code (TPC) code word comprises performing a cyclic redundancy check (CRC) on each of a plurality of code blocks of the TPC code word. The bits of code blocks of the TPC code word which pass the CRC are assigned an artificially high probability confidence measure, such as an artificially high log-likelihood ratio. Assigning these bits an artificially high probability confidence measure allows an iterative process, between a soft decision algorithm and a TPC decoder, to be less complex and to converge on a correct decoding solution more quickly. Apparatus for implementing the method are also provided.

US Patent:

7441175, Oct 21, 2008

Filed:

Mar 12, 2004

Appl. No.:

10/799232

Inventors:

Nan-Hsiung Yeh - Foster City CA, US
Yan Li - Tucson AZ, US

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

H03M 13/00

US Classification:

714758, 714785

Abstract:

A method of decoding a turbo product code (TPC) code word comprises iteratively decoding the TPC code word using an iterative decoder. The method further comprises terminating the iterative decoding when the TPC code word satisfies a cyclic redundancy check (CRC). The TPC code word can include a plurality of square code blocks of user data, with CRC data bits appended to one of the plurality of code blocks instead of replacing user data within the code blocks. Apparatus for implementing the method are also provided.

US Patent:

7455983, Nov 25, 2008

Filed:

Sep 24, 2004

Appl. No.:

10/949181

Inventors:

Chunhui Xu - Palo Alto CA, US
Yan Li - Menlo Park CA, US
Ramkumar Mandalam - Union City CA, US

Assignee:

Geron Corporation - Menlo Park CA

International Classification:

G01N 33/53
C12N 1/00
C12N 5/383

US Classification:

435 721, 435 4, 435366, 435377, 435383, 435385

Abstract:

This disclosure provides an improved system for culturing human pluripotent stem cells. Traditionally, pluripotent stem cells are cultured on a layer of mouse embryonic fibroblast feeder cells to prevent them from differentiating. In the system described here, the role of feeder cells is replaced by defined components added to the culture environment that support rapid proliferation without differentiation. The medium contains an isotonic buffer, a blend of essential nutrients such as protein and lipids, and an effective growth factor or combination of factors that promote proliferation while inhibiting differentiation. Culturing human embryonic stem cells in fresh medium on an extracellular matrix according to this invention causes the cells to expand surprisingly rapidly, while retaining the ability to differentiate into cells representing all three embryonic germ layers. This new culture system allows for bulk proliferation of pPS cells for commercial production of important products for use in drug screening and human therapy.

US Patent:

8592156, Nov 26, 2013

Filed:

Aug 8, 2011

Appl. No.:

13/205469

Inventors:

Wei-min Liu - Dublin CA, US
Yan Li - Palo Alto CA, US
Chih-Jian Lih - Gaithersburg MD, US
Yu Chuan Tai - Pleasanton CA, US

Assignee:

Roche Molecular Systems, Inc. - Pleasanton CA

International Classification:

C12Q 1/68

US Classification:

435 611, 435 61

Abstract:

This invention provides methods, compositions, and kits relating to biomarkers whose expression levels are correlated with diffuse large B-cell lymphoma (DLCBL) patients' response to treatment with a CD20 antagonist, such as a CD20 antibody, exemplified by rituximab. The methods, compositions, and kits of the invention can be used to identify DLBCL patients who are likely or not likely, to respond to anti-CD20 treatments.

US Patent:

8630120, Jan 14, 2014

Filed:

Oct 20, 2011

Appl. No.:

13/277915

Inventors:

Min She - Fremont CA, US
Yan Li - Milpitas CA, US
Kwang-Ho Kim - Pleasanton CA, US
Siu Lung Chan - San Jose CA, US

Assignee:

SanDisk Technologies Inc. - Plano TX

International Classification:

G11C 11/34

US Classification:

36518518, 36518524, 365207

Abstract:

A compact and versatile sense amp is presented. Among its other features this sense amp arrangement provides a way to pre-charge bit lines while doing data scanning. Another feature is that the sense amp circuit can provide a way to set three different bit line levels used in the quick pass write (QPW) technique using dynamic latch, where quick pass write is a technique where cells along a given word line selected for programming can be enabled, inhibited, or partially inhibited for programming. Also, it can provide a convenient way to measure the cell current.

US Patent:

7262998, Aug 28, 2007

Filed:

Aug 7, 2006

Appl. No.:

11/462920

Inventors:

Farookh Moogat - Fremont CA, US
Yan Li - Milpitas CA, US
Alexander K. Mak - Los Altos CA, US

Assignee:

Sandisk Corporation - Milpitas CA

International Classification:

G11C 16/04

US Classification:

36518518, 36518519, 3651852

Abstract:

In a non-volatile memory system, when it is discovered that the voltage pump pulse provided by a charge pump for programming the memory cells does not match a reference voltage, the programming time period of the voltage pump pulse is adjusted to a value that remains substantially unchanged until the end of the programming cycle. In this manner, the fluctuation in the effective programming time period of the programming pulses is prevented for the remainder of the programming cycle so that a broadening of the threshold voltage distribution will not occur or will be reduced. This feature allows a short programming time period to be designated for the programming pulses for enhanced performance, while allowing the flexibility of increased program time period when the charge pump is operating under conditions that causes it to be slow and/or weak.

US Patent:

20100144033, Jun 10, 2010

Filed:

Jun 20, 2006

Appl. No.:

11/917993

Inventors:

Ramkumar Mandalam - Union City CA, US
Yan Li - Menlo Park CA, US

International Classification:

C12N 5/0735

US Classification:

435366

Abstract:

This disclosure provides an improved system for culturing human embryonic stem cells. The cells are cultured in suspension so as to maximize the production capacity of the culture environment. The new culture system of this invention allows for bulk proliferation of hES cells in a more cost-effective manner, which facilitates commercial production of important products for use in human therapy.