Thi Nguyen

US Patent:

6483872, Nov 19, 2002

Filed:

Aug 25, 1998

Appl. No.:

09/140756

Inventors:

Thi N. Nguyen - Carrollton TX

Assignee:

STMicroelectronics, Inc. - Carrollton TX

International Classification:

H03H 740

US Classification:

375231, 375232, 375350, 708305, 708323

Abstract:

A method and apparatus for reducing convergence time in a digital filter. When the digital filter is initially run, the coefficients in the digital filter are adjusted to reduce error in the output of the digital filter. When the adjusted coefficients meet a selected error level, these coefficients are stored in a memory and the digital filter filters data. The next time the digital filter is run, the stored coefficients are loaded into the digital filter and a number of iterations are run in which the coefficients are adjusted. Then, a determination is made as to whether the error level meets a threshold that may be the same as the selected error level. If the coefficients meet the threshold, the coefficients are stored in the memory and the filter is then used to filter data. A number of sets of coefficients may be stored in the memory and a set of coefficients unable to meet the threshold is replaced with another set of coefficients until the threshold is met or untested sets of coefficients are no longer present in the memory. At that time, a default set of coefficients may be used.

US Patent:

59497556, Sep 7, 1999

Filed:

Apr 12, 1996

Appl. No.:

8/631778

Inventors:

Barry Hagglund - Plano TX
Thi Nguyen - Carrollton TX

Assignee:

Fujitsu Network Communications, Inc. - Richardson TX

International Classification:

H04J 314

US Classification:

370224

Abstract:

The present invention relates generally to protection of asynchronous transfer mode (ATM) traffic against Synchronous Optical Network (SONET) fiber cuts or other types of transmission media failures in a SONET Ring. The nodes of the Synchronous Optical Network protect the asynchronous transmission mode cells for immediate failures in the Synchronous Optical Network by establishing a table indicating the topology of the nodes in the Synchronous Optical Network. Each node is capable of detecting a loss of header error check synchronization and generating a protection payload data unit, which is egressed to the plurality of nodes. In addition, each node is capable of ingressing protection payload data units from neighboring nodes and for switching the transmission of asynchronous transmission mode cells within the node so that the cells being transmitted in the network are protected. In addition, each node is capable of detecting the restoration of header error check synchronization and capable of switching the transmission of asynchronous cells within the node when header error check synchronization is restored.

US Patent:

60057904, Dec 21, 1999

Filed:

Dec 22, 1998

Appl. No.:

9/219546

Inventors:

Tsiu C. Chan - Carrollton TX
Thi N. Nguyen - Carrollton TX

Assignee:

STMicroelectronics, Inc. - Carrollton TX

International Classification:

G11C 1400

US Classification:

365 49

Abstract:

A non-volatile storage device storing a data bit received from a bitline via an accessing circuit. A coupling circuit couples either the bitline, or a complementary bitline to a biasing circuit dependent on the logic level of the data bit stored in the storage device. The biasing circuit generates a match signal when a data bit having the same logic level as the stored data bit is applied to the bitline.

US Patent:

62983695, Oct 2, 2001

Filed:

Sep 30, 1998

Appl. No.:

9/164027

Inventors:

Thi N. Nguyen - Carrollton TX

Assignee:

STMicroelectronics, Inc. - Carrollton TX

International Classification:

G06F 752

US Classification:

708620

Abstract:

The high speed multiplier takes advantage of results from previous calculations by recognizing that in many cases the multiplicand between a first and second multiplication differs only slightly. Thus, the present system divides the multiplicand into a cache lookup bit (CLB) and a table lookup bit (TLB). The results of a first multiplication are stored in a cache. The CLB of a of the multiplicand in the second multiplication is then compared to the CLB of the multiplicand in the second multiplication. If the CLB matches, the product of the first multiplication is retrieved. The product of the TLB of the multiplicand and the multiplier is then retrieved from a lookup table and either added or subtracted from the retrieved product.

Address:

3809 Pendleton Ct, Irving, TX 75062

VIN:

4JGBB86E27A164127

Make:

MERCEDES-BENZ

Model:

M-CLASS

Year:

2007

Address:

517 Vine St, Euless, TX 76040

Phone:

817 684-0260

VIN:

JHMCM56347C011638

Make:

HONDA

Model:

ACCORD

Year:

2007