Tri M Tran

US Patent:

6734716, May 11, 2004

Filed:

Sep 19, 2002

Appl. No.:

10/247127

Inventors:

Brian W. Amick - Austin TX
Lynn Warriner - Round Rock TX
Claude R. Gauthier - Cupertino CA
Tri Tran - San Leandro CA

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

G05F 110

US Classification:

327530, 327538

Abstract:

A SSTL memory interface pre-driver stage that uses a voltage regulator to generate a âvirtualâ supply is provided. The âvirtualâ supply, being lower than a power supply voltage of the pre-driver stage, allows low voltage transistors to be used, thereby improving interface performance and decreasing system power consumption. The pre-driver stage uses a biasing circuit to bias the voltage regulator, formed by a transistor arranged in a source follower configuration, to generate the âvirtualâ supply off which a voltage translator stage of the pre-driver stage operates to generate an output of the pre-driver stage.

US Patent:

6803788, Oct 12, 2004

Filed:

Sep 20, 2002

Appl. No.:

10/251087

Inventors:

Brian W. Amick - Austin TX
Lynn A. Warriner - Round Rock TX
Claude R. Gauthier - Cupertino CA
Tri Tran - San Leandro CA

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

H03K 17687

US Classification:

326 81, 326 68

Abstract:

A SSTL interface voltage translator that uses dynamic biasing to translate an input signal to an output signal is provided. The voltage translator uses a first device that, dependent on a first bias signal, causes the output signal to be pulled down, where the first bias signal is dependent on the input signal. The voltage translator also uses a second device that, dependent on a second bias signal, causes the output signal to be pulled up, where the second bias signal is dependent on the input signal.

US Patent:

6873503, Mar 29, 2005

Filed:

Sep 19, 2002

Appl. No.:

10/247082

Inventors:

Brian W. Amick - Austin TX, US
Lynn Warriner - Round Rock TX, US
Claude R. Gauthier - Cupertino CA, US
Tri Tran - San Leandro CA, US

Assignee:

Sun Microsystems, Inc. - Santa Clara CA

International Classification:

H02H003/20

US Classification:

361 18, 361 911

Abstract:

A SSTL memory interface pre-driver stage that uses a voltage regulator to generate a ‘virtual’ ground reference voltage is provided. The ‘virtual’ ground voltage reference, being greater than a zero volt ground voltage, allows low voltage transistors to be used, thereby improving interface performance and decreasing system power consumption. The pre-driver stage uses a biasing circuit to bias the voltage regulator, formed by a transistor arranged in a source follower configuration, to generate the ‘virtual’ ground reference voltage off which a voltage translator stage of the pre-driver stage operates to generate an output of the pre-driver stage.

Address:

10422 Tenneco Dr, Houston, TX 77099

VIN:

4T4BF3EK0BR171556

Make:

TOYOTA

Model:

CAMRY

Year:

2011