Thanh Thu Trinh

Address:

13008 Powderhorn St, Austin, TX 78727

Phone:

5128212021

VIN:

4T1BE46K37U146059

Make:

TOYOTA

Model:

CAMRY

Year:

2007

Address:

10605 Cranford Ct, Austin, TX 78726

Phone:

5123350780

VIN:

4T1BE46KX7U539279

Make:

TOYOTA

Model:

CAMRY

Year:

2007

US Patent:

6337884, Jan 8, 2002

Filed:

Jun 12, 1998

Appl. No.:

09/096502

Inventors:

Tai Cao - Austin TX
Satyajit Dutta - Austin TX
Thai Quoc Nguyen - Austin TX
Thanh Doan Trinh - Austin TX
Lloyd Andre Walls - Austin TX

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04B 300

US Classification:

375257, 375288

Abstract:

The present invention allows for the simultaneous transmission of two digital signals from one integrated circuit to another. The two digital signals are encoded utilizing a voltage divider circuit and are then transmitted by one transmission line to the second integrated circuit chip. The second integrated circuit chip decodes the first digital signal and then utilizes this decoded digital signal to further decode the second digital signal.

US Patent:

55415350, Jul 30, 1996

Filed:

Dec 16, 1994

Appl. No.:

8/357885

Inventors:

Tai A. Cao - Austin TX
Satyajit Dutta - Austin TX
Thai Q. Nguyen - Austin TX
Thanh D. Trinh - Austin TX
Lloyd A. Walls - Austin TX

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H03K 190185

US Classification:

326 83

Abstract:

A CMOS driver/receiver pair is provided which includes a non-inverting buffer in the input path to a differential receiver circuit. The non-inverting buffer allows a plurality of different voltages, and corresponding voltage swings, to be possible. This allows the differential receiver to compare the input voltage received from the transmission line with the output from its associated driver. Therefore, the receiver is capable of determining the voltage level (and the corresponding logic level) input from the transmission at the same time its associated driver is outputting a logic signal to another driver/receiver pair, via the transmission line. A single voltage source is utilized to provide multiple positive voltages to the differential receivers, such that differences in voltage levels which correspond to different logical combinations of "1" and "0" can be determined by the receiver.

US Patent:

55348122, Jul 9, 1996

Filed:

Apr 21, 1995

Appl. No.:

8/426753

Inventors:

Tai A. Cao - Austin TX
Satyajit Dutta - Austin TX
Thai Q. Nguyen - Austin TX
Thanh D. Trinh - Austin TX
Lloyd A. Walls - Austin TX

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H03L 500

US Classification:

327333

Abstract:

The present invention includes an output circuit for a driver on a first chip that will cause an unterminated transmission line to create a predetermined voltage reflection. This reflection will then be added to the output of the driver circuit to obtain a voltage level capable of switching the receiver circuit, located on a second chip. Further, the impedance of the driver can be varied to adjust the voltage level of the signal being transmitted to the receiver, in order to reduce noise margins and cause the receiver to switch more quickly. Additionally, the transmission line impedance can also be modified to create overshoot, thereby allowing chips with dissimilar voltage levels to communicate with one another.

US Patent:

57899371, Aug 4, 1998

Filed:

Aug 14, 1996

Appl. No.:

8/702406

Inventors:

Tai Any Cao - Austin TX
Satyajit Dutta - Austin TX
Thai Quoc Nguyen - Plano TX
Thanh Doan Trinh - Austin TX
Lloyd Andre Walls - Austin TX

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H03K 190185

US Classification:

326 30

Abstract:

A driver circuit including of one or more fingers, or parallel driver circuits, senses for an overshoot or an undershoot condition of the signal transmitted onto a transmission line coupled to the driver circuit and compensates for such an overshoot or an undershoot by temporarily turning off the offending transition portion of the driver circuit, or finger portion. This is accomplished by turning off the transistor applying one of the two supply voltages coupled to the output transmission line. Effectively, the compensation circuitry within the driver circuit more closely matches the output impedance of the driver circuit to the impedance on the driven transmission line.

US Patent:

55415342, Jul 30, 1996

Filed:

Feb 13, 1995

Appl. No.:

8/387517

Inventors:

Tai Cao - Austin TX
Satyajit Dutta - Austin TX
Thai Q. Nguyen - Austin TX
Thanh D. Trinh - Austin TX
Lloyd A. Walls - Austin TX

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H03K 190185
H03K 190948

US Classification:

326 81

Abstract:

The present invention facilitates communication of signals from circuitry implemented with a first CMOS technology requiring a first voltage level supply for operation to circuitry implemented with a second CMOS technology requiring a second voltage level supply for operation, wherein the first and second voltage level supplies are not equal. The present invention receives from the circuitry implemented with a first CMOS technology a signal which has a first voltage level that is not acceptable for input into the circuitry implemented with a second CMOS technology. This signal is converted to a second voltage level that is acceptable for input into the circuitry implemented with a second CMOS technology, and then transmitted to the circuitry implemented with a second CMOS technology requiring a second voltage level supply for operation.

US Patent:

58645845, Jan 26, 1999

Filed:

Feb 13, 1995

Appl. No.:

8/387518

Inventors:

Tai Cao - Austin TX
Satyajit Dutta - Austin TX
Thai Quoc Nguyen - Austin TX
Thanh Doan Trinh - Austin TX
Lloyd Andre Walls - Austin TX

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04J 1500
H04L 504
H04L 2534
H04B 1406

US Classification:

375244

Abstract:

The present invention allows for the simultaneous transmission of two digital signals from one integrated circuit to another. The two digital signals are encoded utilizing a voltage divider circuit and are then transmitted by one transmission line to the second integrated circuit chip. The second integrated circuit chip decodes the first digital signal and then utilizes this decoded digital signal to further decode the second digital signal.

US Patent:

55259146, Jun 11, 1996

Filed:

Jan 23, 1995

Appl. No.:

8/376704

Inventors:

Tai Cao - Austin TX
Satyajit Dutta - Austin TX
Thai Q. Nguyen - Austin TX
Nandor G. Thoma - Plano TX
Thanh D. Trinh - Austin TX

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H03K 190185

US Classification:

326 71

Abstract:

A clock distribution system for a data processing system is implemented in CMOS technology wherein a full-swing differential clock signal is converted to a low-voltage swing differential clock signal by a driver's circuit and then returned to a full-swing differential clock signal at each receiver circuit.

US Patent:

55393330, Jul 23, 1996

Filed:

Jan 23, 1995

Appl. No.:

8/376705

Inventors:

Tai Cao - Austin TX
Satyajit Dutta - Austin TX
Thai Q. Nguyen - Austin TX
Nandor G. Thoma - Plano TX
Thanh D. Trinh - Austin TX

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H03K 190185

US Classification:

326 63

Abstract:

A clock distribution system for a data processing system is implemented in CMOS technology wherein a full-swing differential clock signal is converted to a low-voltage swing differential clock signal by a driver's circuit and then returned to a full-swing differential clock signal at each receiver circuit.