Rajiv Chand Gupta

US Patent:

6741517, May 25, 2004

Filed:

Mar 29, 2002

Appl. No.:

10/113684

Inventors:

Duncan M. Fisher - Mission Viejo CA
Rajiv Gupta - Fullerton CA

Assignee:

Mindspeed Technologies, Inc. - Newport Beach CA

International Classification:

G11C 800

US Classification:

36523005, 365154, 365156, 365203

Abstract:

According to one embodiment, a RAM array includes at least one RAM cell comprising a first access transistor driven by a first word line. When the first access transistor is turned on, it couples the RAM cell to a first bit line. The first bit line is connected to a single-ended sense amplifier such as an inverter. Similarly, the RAM cell comprises second, third, and fourth access transistors driven by respectively second, third, and fourth word lines. When the respective access transistors are turned on, they couple the RAM cell to respectively second, third, and fourth bit lines. The bit lines are connected to respective single-ended sense amplifiers such as inverters. In one embodiment, each of the first, second, third, and fourth access transistors is an NFET. The first, second, third, and fourth bit lines are coupled to respectively first, second, third, and fourth precharge transistors.

US Patent:

7428653, Sep 23, 2008

Filed:

Jul 20, 2005

Appl. No.:

11/185926

Inventors:

Duncan M. Fisher - Mission Viejo CA, US
Keith Bindloss - Irvine CA, US
Ching Long Su - Arcadia CA, US
Marty T. Budrovic - Las Flores CA, US
Rajiv Gupta - Fullerton CA, US

Assignee:

Mindspeed Technologies, Inc. - Newport Beach CA

International Classification:

G06F 1/12
G06F 1/04

US Classification:

713400, 713600

Abstract:

An alternate multi-thread pipeline structure and method are provided. A deep pipeline is provided in which two threads of two separate pipeline stages are alternatively presented to the various logic and latch circuits for execution. The execution and latching of the threads alternates from one thread to the other within a single clock cycle. Thus, each thread is executed once per clock cycle and two threads are executed in a single clock cycle.

US Patent:

45830134, Apr 15, 1986

Filed:

Feb 13, 1984

Appl. No.:

6/579617

Inventors:

Rajiv Gupta - Brea CA

Assignee:

Rockwell International Corporation - El Segundo CA

International Classification:

H03K 17687

US Classification:

307480

Abstract:

A circuit for use on an integrated circuit chip for detecting the operative connection of a crystal used to control an on-chip crystal controlled oscillator, which generates a cyclical clock signal, by detecting the presence or absence, respectively, of the cyclical clock signal and for providing an output control signal in response thereto to an on-chip terminal pad control circuit which automatically enables an on-chip terminal pad to be utilized as a clock signal output terminal pad if the cyclical clock signal presence is detected or as a clock signal input terminal pad otherwise. Also, a method of automatically switching the function of a terminal pad on an integrated circuit chip to function as a clock signal output terminal pad or as a clock signal input terminal pad in accordance with detecting the existence or non-existence of a cyclical clock signal generated on-chip.

US Patent:

54555426, Oct 3, 1995

Filed:

Nov 22, 1993

Appl. No.:

8/155500

Inventors:

John R. Spence - Villa Park CA
Rajiv Gupta - Brea CA
Ming M. Zhang - Irvine CA

Assignee:

Rockwell International Corporation - Seal Beach CA

International Classification:

H03B 530

US Classification:

331158

Abstract:

An oscillator circuit provides a symmetrical signal without halving the frequency of a crystal oscillator 12. The input 14 of the crystal oscillator 12 is low pass filtered, and the output 18 of the filter 16 is differential voltage compared with the input 14 of the crystal oscillator 12. The output 22 of the differential voltage comparator 20 is symmetrical and of the same frequency as the crystal oscillator 12. The crystal oscillator 12 is preferably a Pierce oscillator.

US Patent:

55149510, May 7, 1996

Filed:

Apr 11, 1994

Appl. No.:

8/226198

Inventors:

Raouf Halim - Laguna Niguel CA
Rajiv Gupta - Brea CA
Daryush Shamlou - Laguna Niguel CA

Assignee:

Rockwell International Corporation - Seal Beach CA

International Classification:

G05F 140

US Classification:

323901

Abstract:

A novel supply discriminator circuit is disclosed for detecting the level of a supply voltage during power-up of a system for configuring an integrated analog circuit such as a PCMCIA card. The circuit compares a reference voltage with a divided down supply voltage and latches the result a predetermined delay later. The delay thus provides timing for the supply voltage to stabilize after power-up to assure accurate detection, as well as noise immunity from other devices.

US Patent:

54633362, Oct 31, 1995

Filed:

Jan 27, 1994

Appl. No.:

8/186939

Inventors:

Rajiv Gupta - Brea CA
Raouf Halim - Laguna Niguel CA
Daryush Shamlou - Laguna Niguel CA

Assignee:

Rockwell International Corporation - Seal Beach CA

International Classification:

H03K 1722

US Classification:

327143

Abstract:

A circuit for detecting a system reset caused by the turning on of power supply of an electronic system. The circuit comprises: latch means coupled to said power supply having a SET input and an output, said output of said latch means being reset to a first predetermined state during power-on; feedback means for receiving said output from said latch means and said system reset, said feedback means activating its output when both of said first predetermined state from said latch means' output and said system reset are present; delay means coupled to the output from said feedback means and to said latch means, said delay means activating its output a predetermined time after said delay means receiving an activated output from said feedback means, said activated output from said delay means setting said latch means to a second predetermined state such that said feedback means remains de-activated when only said system reset is present without power-on.

US Patent:

54867959, Jan 23, 1996

Filed:

Apr 22, 1993

Appl. No.:

8/051134

Inventors:

John R. Spence - Villa Park CA
Rajiv Gupta - Brea CA
Mingming Zhang - Alhambra CA

Assignee:

Rockwell International Corporation - Seal Beach CA

International Classification:

H03B 506
H03B 536

US Classification:

331116FE

Abstract:

The LOW POWER CRYSTAL OSCILLATOR shown here reduces power consumption of a Pierce oscillator which has an inverter preferably made of an NFET N0 and a PFET P0 in series. A load, preferably an NFET N1 with its gate wired to its source, is placed in parallel with a switch, preferably a PFET P1, between P0 and Vcc. A clamp, preferably a PFET P2 with its gate wired to its source, is placed in parallel with a switch, preferably an NFET N2, between N0 and ground. The switches are enabled during power-up, thereby providing quick turn-on of the oscillator. They are then disabled, thereby reducing the voltage across the crystal XTAL and consequently reducing the power consumed.

US Patent:

55303986, Jun 25, 1996

Filed:

Apr 11, 1994

Appl. No.:

8/226126

Inventors:

Daryush Shamlou - Laguna Niguel CA
Edward MacRobbie - Lake Forest CA
Rajiv Gupta - Brea CA
Raouf Halim - Laguna Niguel CA

Assignee:

Rockwell International Corporation - Seal Beach CA

International Classification:

H03L 500

US Classification:

327545

Abstract:

A circuit for converting a system supply voltage having one of two levels to a voltage for use by an integrated analog circuit connected to the system upon power-up. The circuit uses a diode-connected transistor to generate a reference voltage necessary for a regulator to regulate the supply voltage when the supply voltage is first powered up. The regulated supply voltage is doubled to a voltage level sufficient to activate the integrated analog circuit's bandgap voltage. The activated bandgap voltage is thus switched on to supply a more precise reference voltage to the regulator so that the diode-connected transistor may be de-activated to conserve power. The circuit also provides a bypass path for connecting the supply voltage directly to the integrated analog circuit when the supply voltage is the same level as the necessary voltage for the integrated analog circuit.

Address:

2554 Saratoga Dr, Fullerton, CA 92835

VIN:

JNKCV64EX8M111200

Make:

INFINITI

Model:

G37

Year:

2008