Tuan Viet Do

US Patent:

6522189, Feb 18, 2003

Filed:

Oct 2, 2000

Appl. No.:

09/678482

Inventors:

Tuan P. Do - San Jose CA
Brian J. Campbell - Sunnyvale CA

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H03K 1762

US Classification:

327407, 327408, 327 57, 326115, 326119

Abstract:

A high-speed bank select multiplexer latch may be coupled to a pair of differential output nodes and configured to capture and retain an output on the pair of differential output nodes responsive to two or more pairs of differential data inputs being active. A first subcircuit including a first N-channel transistor and a second N-channel transistor is configured to receive at least a first input signal and a second input signal and to drive a first output on a first output node responsive to either of the first input signal or the second input signal being active. Additionally, a second subcircuit including a third N-channel transistor and a fourth N-channel transistor is configured to receive at least a third input signal and a fourth input signal and to drive a second output on a second output node responsive to either of the third input signal or the fourth input signal being active. A latching circuit including a first inverter and a second inverter is coupled to the first output node and the second output node and configured to retain the first output on the first output node and the second output on the second output node. A charging circuit is contemplated and includes at least a first NOR gate, a second NOR gate, and first and second P-channel transistors.

US Patent:

6630856, Oct 7, 2003

Filed:

Dec 6, 2002

Appl. No.:

10/313209

Inventors:

Tuan P. Do - San Jose CA
Brian J. Campbell - Sunnyvale CA

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

H03K 1762

US Classification:

327407, 327408

Abstract:

A high-speed bank select multiplexer latch may be coupled to a pair of differential output nodes and configured to capture and retain an output on the pair of differential output nodes responsive to two or more pairs of differential data inputs being active. A first subcircuit including a first N-channel transistor and a second N-channel transistor is configured to receive at least a first input signal and a second input signal and to drive a first output on a first output node responsive to either of the first input signal or the second input signal being active. Additionally, a second subcircuit including a third N-channel transistor and a fourth N-channel transistor is configured to receive at least a third input signal and a fourth input signal and to drive a second output on a second output node responsive to either of the third input signal or the fourth input signal being active. A latching circuit including a first inverter and a second inverter is coupled to the first output node and the second output node and configured to retain the first output on the first output node and the second output on the second output node. A charging circuit is contemplated and includes at least a first NOR gate, a second NOR gate, and first and second P-channel transistors.

US Patent:

6674671, Jan 6, 2004

Filed:

Aug 14, 2002

Appl. No.:

10/218348

Inventors:

Brian J. Campbell - Sunnyvale CA
Tuan P. Do - San Jose CA

Assignee:

Broadcom Corp. - Irvine CA

International Classification:

G11C 700

US Classification:

36518905, 36518902, 326 86, 326 87, 327108

Abstract:

An apparatus may include at least a first transistor, a second transistor, and a circuit. The first transistor has a first control terminal coupled to receive a first dynamic data signal, and is coupled to a first node. The first transistor drives a first state on the first node responsive to an assertion of the first dynamic data signal. The second transistor is coupled to the first node and has a second control terminal. The second transistor is drives a second state on the first node responsive to a signal on the second control terminal. The circuit is coupled to generate the signal on the second control terminal and is coupled to receive a second dynamic data signal. The second dynamic data signal is a complement of the first dynamic data signal, wherein the circuit is activates the second transistor responsive to an assertion of the second dynamic data signal.

US Patent:

6859402, Feb 22, 2005

Filed:

Nov 17, 2003

Appl. No.:

10/715311

Inventors:

Brian J. Campbell - Sunnyvale CA, US
Tuan P. Do - San Jose CA, US

Assignee:

Broadcom Corporation - Irvine CA

International Classification:

G11C007/00

US Classification:

36518905, 36518902, 326 86, 326 87, 327108

Abstract:

An apparatus may include at least a first transistor, a second transistor, and a circuit. The first transistor has a first control terminal coupled to receive a first dynamic data signal, and is coupled to a first node. The first transistor drives a first state on the first node responsive to an assertion of the first dynamic data signal. The second transistor is coupled to the first node and has a second control terminal. The second transistor is drives a second state on the first node responsive to a signal on the second control terminal. The circuit is coupled to generate the signal on the second control terminal and is coupled to receive a second dynamic data signal. The second dynamic data signal is a complement of the first dynamic data signal, wherein the circuit is activates the second transistor responsive to an assertion of the second dynamic data signal.

US Patent:

58595520, Jan 12, 1999

Filed:

Aug 1, 1997

Appl. No.:

8/904743

Inventors:

Tuan P. Do - San Jose CA
Casimiro A. Stascausky - Fremont CA

Assignee:

LSI Logic Corporation - Milpitas CA

International Classification:

H03H 1126

US Classification:

327170

Abstract:

A slew rate control circuit for an output circuit of an integrated circuit includes an input node for obtaining an input signal and an output node for providing an output signal. A first stage of the control circuit includes at least one transistor having a control terminal and first and second main terminals. The control terminals of each at least one transistor are connected together to the input node. The first main terminal of each at least one transistor are connected to a voltage rail. The second main terminal of each at least one transistor is connected to the output node through its own individual resistor. One or more subsequent stages of the control circuit each contain at least one transistor having a control terminal and first and second main terminals. The control terminals of each at least one transistor in each one or more subsequent stages of the control circuit are connected together to a control node driven from the control terminals of the preceding stage through at least one inverter. The first main terminal of each at least one transistor are connected to a voltage rail.

US Patent:

20210031196, Feb 4, 2021

Filed:

Oct 16, 2020

Appl. No.:

17/072332

Inventors:

- San Diego CA, US
Austin DERFUS - Solana Beach CA, US
Armando TOVAR - San Diego CA, US
Justin DAVIDSON - San Diego CA, US
Tuan DO - San Diego CA, US
Paul CRIVELLI - San Diego CA, US
Matthew WANG - San Diego CA, US

International Classification:

B01L 3/00
G01N 33/49
G01N 33/543
G01N 33/68

Abstract:

A combination of components in a capillary flow channel use capillary forces to passively control the movement of liquid samples within a microfluidic device. To detect a target, a liquid sample introduced to a proximal portion of capillary channel of a microfluidic device moves by capillary action along the specific components of capillary channel.

US Patent:

20190064158, Feb 28, 2019

Filed:

Oct 24, 2018

Appl. No.:

16/169738

Inventors:

- San Diego CA, US
Paul Michael CRIVELLI - San Diego CA, US
Austin Matthew DERFUS - Carlsbad CA, US
Tuan Hoang DO - San Diego CA, US
Remus Anders Brix HAUPT - Encinitas CA, US
Emily PARKER - Encinitas CA, US
Gregory RENEFF - San Diego CA, US
Armando Raul TOVAR - San Diego CA, US

International Classification:

G01N 33/543

Abstract:

A combination of capillary forces and gas pressure is used to control the movement of liquid samples within a microfluidic device. A liquid sample introduced to a proximal portion of a capillary channel of a microfluidic device moves by capillary action partway along the capillary channel. As the liquid sample moves, a pressure of a gas acting upon a distal gas-liquid interface of the liquid sample increases by an amount sufficient to stop further movement of the liquid sample. To initiate further movement of the liquid sample, a pump connected to a distal portion of the capillary channel decreases the pressure of the gas acting upon the distal gas-liquid interface of the liquid sample by an amount sufficient to permit the liquid sample to move by capillary action further along the capillary channel of the microfluidic device.

US Patent:

20150087079, Mar 26, 2015

Filed:

Apr 5, 2013

Appl. No.:

14/391643

Inventors:

- San Diego CA, US
Paul Michael Crivelli - San Diego CA, US
Austin Matthew Derfus - Carlsbad CA, US
Tuan Hoang Do - San Diego CA, US
Remus Anders Brix Haupt - Encinitas CA, US
Emily Parker - Encinitas CA, US
Gregory Reneff - San Diego CA, US
Armando Raul Tovar - San Diego CA, US

International Classification:

G01N 33/543

US Classification:

436501

Abstract:

A combination of capillary forces and gas pressure is used to control the movement of liquid samples within a microfluidic device. A liquid sample introduced to a proximal portion of a capillary channel of a microfluidic device moves by capillary action partway along the capillary channel. As the liquid sample moves, a pressure of a gas acting upon a distal gas-liquid interface of the liquid sample increases by an amount sufficient to stop further movement of the liquid sample. To initiate further movement of the liquid sample, a pump connected to a distal portion of the capillary channel decreases the pressure of the gas acting upon the distal gas-liquid interface of the liquid sample by an amount sufficient to permit the liquid sample to move by capillary action further along the capillary channel of the microfluidic device.