Sanjay X Gupta

Author:

Sanjay Gupta

ISBN #:

0324020260

Author:

Sanjay Gupta

ISBN #:

0324020279

Author:

Sanjay Gupta

ISBN #:

0446526509

Author:

Sanjay Gupta

ISBN #:

1932159177

Author:

Sanjay Gupta

ISBN #:

8185200297

US Patent:

49088572, Mar 13, 1990

Filed:

May 22, 1989

Appl. No.:

7/355220

Inventors:

Robert V. Burns - Phoenix AZ
Sanjay Gupta - Phoenix AZ

Assignee:

Siemens Transmission Systems, Inc. - Phoenix AZ

International Classification:

H04M 302

US Classification:

379418

Abstract:

The present invention provides a power drive circuit which is transformer isolated from the circuit developing the drive signals, but which does not lose its DC reference voltage. This technique results in the desired isolation without the undesirable possibility of operating the output transistors in an unsafe DC region, which is a particular problem when the output transistors are FET devices. In accordance with the present invention, pulse transformers are used to drive the power FET devices.

US Patent:

49625276, Oct 9, 1990

Filed:

May 22, 1989

Appl. No.:

7/355221

Inventors:

Robert V. Burns - Phoenix AZ
Sanjay Gupta - Phoenix AZ

Assignee:

Siemens Transmission Systems, Inc. - Phoenix AZ

International Classification:

H04M 302

US Classification:

379418

Abstract:

A series ringing signal generator is disclosed which comprises a source of a user control signal. A programmable ringing signal generator is provided for generating an analog sine wave signal having a selectable amplitude and frequency in response to a selection signal. Finally, sequencing means, coupled between the source of the user control signal and the programmable ringing signal generator, is provided for generating a sequence of selection signals in response to said user control signal.

US Patent:

51210690, Jun 9, 1992

Filed:

Dec 16, 1988

Appl. No.:

7/285463

Inventors:

Robert V. Burns - Phoenix AZ
Sanjay Gupta - Phoenix AZ

Assignee:

Siemens Transmission Systems, Inc. - Phoenix AZ

International Classification:

H03B 2800
H03B 1900
H03K 500

US Classification:

328 27

Abstract:

A programmable signal generator is disclosed which includes a source of a user control signal. A controlled clock signal generator produces one of a predetermined setof respective clock signals responsive to the user control signal. Means are coupled to the clock signal generator for converting the clock signals to an analog sine-wave.

US Patent:

49245112, May 8, 1990

Filed:

Dec 16, 1988

Appl. No.:

7/285460

Inventors:

Robert V. Burns - Phoenix AZ
Sanjay Gupta - Phoenix AZ

Assignee:

Siemens Transmission Systems, Inc. - Phoenix AZ

International Classification:

H04M 302

US Classification:

379418

Abstract:

A programmable ring signal generator includes a source of a user control signal. A controlled clock signal generator produces one of a set of respective clock signals responsive to the user control signal. A switched capacitor filter is coupled to the clock signal generator for converting the clock signals to an analog sine-wave. Finally, a power amplifier, coupled to the sine-wave converter, produces the ring signal.

US Patent:

50017489, Mar 19, 1991

Filed:

Aug 21, 1989

Appl. No.:

7/396583

Inventors:

Robert V. Burns - Phoenix
Sanjay Gupta - Phoenix AZ

Assignee:

Siemens Transmission Systems, Inc. - Phoenix AZ

International Classification:

H04M 302

US Classification:

379418

Abstract:

A ringing signal generator includes a low power signal generator for generating a relatively low power signal representing a ringing signal, a bipolar pulse generator for generating a series of bipolar pulses having widths representing the amplitude of the low power signal, wherein adjoining pulses have opposite polarities, and a high power ringing signal generator for producing a high power ringing signal in response to the series of bipolar pulses. An analog sine wave signal is superimposed upon a DC bias signal to produce the low power signal.

US Patent:

49656929, Oct 23, 1990

Filed:

Jul 31, 1989

Appl. No.:

7/387194

Inventors:

Robert V. Burns - Phoenix AZ
Sanjay Gupta - Phoenix AZ

Assignee:

Siemens Transmission Systems, Inc. - Phoenix AZ

International Classification:

H02H 7122

US Classification:

361 18

Abstract:

An overload protection circuit for power supplies and telecommunications apparatus such as multifrequency ringing generators causes the output voltage to become zero when a current overload is detected. The voltage is kept at zero for a predetermined period of time. Then the output voltage is restored. If an overload is still detected, the output voltage is again brought to zero.

US Patent:

58118802, Sep 22, 1998

Filed:

Oct 21, 1997

Appl. No.:

8/954984

Inventors:

Koushik Banerjee - Chandler AZ
Barbara Jane Ultis - Chandler AZ
Sanjay Gupta - Tempe AZ
John F. McMahon - Phoenix AZ

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

H01L 2334
H01L 2348
H01L 2302

US Classification:

257724

Abstract:

An electronic package which contains discrete resistive and capacitive components used to control the operating device of an integrated circuit located within the package. The package has a bonding shelf that has a plurality of bond fingers which are connected to the integrated circuit. The discrete passive components are mounted to the bonding shelf and connected to the bond fingers by lead traces. The lead traces terminate at the discrete devices so that the resistor and capacitor cannot be accessed through the external contacts of the package. The integrated circuit and discrete components are typically enclosed by a molded plastic material to prevent physical access to the devices without damaging the package.