Patents by Inventor Krishna Gupta

Krishna Gupta has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20250051706
    Abstract: A modifiable hydrogel material has main chain polymers which are modified with anchor modules in the form of predetermined functionalized single strands of DNA. The main chain polymers can be crosslinked with one another by intermolecular DNA double strand formation. A DNA sequence of the anchor modules has a predetermined number of specific sequence positions N with different base combinations and/or is blocked by a temperature-dependent DNA blocking strand. In a method for producing a hydrogel with the modifiable hydrogel material, DNA modules in the form of free DNA single strands or DNA modules in the form of predetermined DNA single strand pairs which bind to anchor modules in a complementary manner are employed for crosslinking the main chain polymers, which form an intermolecular DNA double strand at a common binding domain.
    Type: Application
    Filed: December 21, 2022
    Publication date: February 13, 2025
    Inventors: Elisha KRIEG, Yu-Hsuan PENG, Krishna GUPTA, Syuan Ku HSIAO
  • Publication number: 20150047418
    Abstract: Compression testing apparatus for analyzing porous materials includes a cylindrical channel having a central bore, solid outside, upper and lower walls, the inner edge of the channel being open to the inner bore. A flexible sealing member having a central bore concentric to the bore of the cylindrical channel opposes the edge of the channel. The flexible walls of the flexible member overlap with and are sealingly affixed to the upper and lower surfaces of the channel. The central bore of the flexible sealing member thus forms a sample chamber for porous material to be tested. Top and bottom sealing members cover the sample chamber and a gas inlet enters through the outside wall of the cylindrical channel for applying biaxial or radial compression on the test material. Triaxial compression is applied with addition of a weight or piston sealingly engaged within the central bore of the flexible sealing member.
    Type: Application
    Filed: February 13, 2014
    Publication date: February 19, 2015
    Applicant: POROUS MATERIALS, INC.
    Inventors: Krishna Gupta, Akshaya Jena
  • Patent number: 8934598
    Abstract: An integrated system for adaptive equalization and jitter reduction of a video signal that includes an adaptive equalizer and a jitter cleaner located on one integrated circuit within a single package. An adaptive equalizer applies frequency specific signal modification to the received signal. A bit rate detector determines a bit rate of the video signal or the equalized signal. The jitter cleaner couples to the adaptive equalizer output and processes the equalized signal to reduce jitter in the equalized signal. A multiplexer receives the equalized signal and the jitter cleaner output and, responsive to a control signal, outputs either the equalized signal or the jitter cleaner output signal. A status monitor may optionally be included to compare the detected bit rate to a bit rate threshold, and a responsive to the comparing activate or deactivate the jitter cleaner and output either the equalized signal or jitter cleaner output.
    Type: Grant
    Filed: April 5, 2013
    Date of Patent: January 13, 2015
    Assignee: Mindspeed Technologies, Inc.
    Inventors: Atul Krishna Gupta, Ryan Suresh Latchman, Nicolas Alain Paul Nodenot
  • Patent number: 8798044
    Abstract: An integrated circuit device for switching data has a plurality of input channels and a plurality of output channels. The device includes a switch for selectively connecting a subset of the output channels, mutually orthogonal, to the input channels by providing signal paths between the selected mutually orthogonal output channels and the input channels. The selected output channels are not orthogonal to the output channels that are not selected.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: August 5, 2014
    Assignee: Mindspeed Technologies, Inc.
    Inventor: Atul Krishna Gupta
  • Publication number: 20130329130
    Abstract: An integrated system for adaptive equalization and jitter reduction of a video signal that includes an adaptive equalizer and a jitter cleaner located on one integrated circuit within a single package. An adaptive equalizer applies frequency specific signal modification to the received signal. A bit rate detector determines a bit rate of the video signal or the equalized signal. The jitter cleaner couples to the adaptive equalizer output and processes the equalized signal to reduce jitter in the equalized signal. A multiplexer receives the equalized signal and the jitter cleaner output and, responsive to a control signal, outputs either the equalized signal or the jitter cleaner output signal. A status monitor may optionally be included to compare the detected bit rate to a bit rate threshold, and a responsive to the comparing activate or deactivate the jitter cleaner and output either the equalized signal or jitter cleaner output.
    Type: Application
    Filed: April 5, 2013
    Publication date: December 12, 2013
    Applicant: Mindspeed Technologies, Inc.
    Inventors: Atul Krishna Gupta, Ryan Suresh Latchman, Nicolas Alain Paul Nodenot
  • Publication number: 20120274383
    Abstract: An integrated circuit device for switching data has a plurality of input channels and a plurality of output channels. The device includes a switch for selectively connecting a subset of the output channels, mutually orthogonal, to the input channels by providing signal paths between the selected mutually orthogonal output channels and the input channels. The selected output channels are not orthogonal to the output channels that are not selected.
    Type: Application
    Filed: April 27, 2011
    Publication date: November 1, 2012
    Applicant: MINDSPEED TECHNOLOGIES, INC.
    Inventor: Atul Krishna Gupta
  • Patent number: 7415064
    Abstract: Transmit amplitude independent adaptive equalizers are provided that compensate for transmission losses in an input signal when the transmit signal amplitude is unknown. Several embodiments are provided, including a first embodiment having an equalizer core, a controllable-swing slicer and an amplitude control loop, a second embodiment having an equalizer core, a fixed-swing slicer and a control loop, a third embodiment having an equalizer core, a variable gain amplifier, and a variable gain amplifier control loop, and a fourth embodiment having an equalizer core, a fixed-swing slicer, a variable gain amplifier, and a variable gain amplifier control loop.
    Type: Grant
    Filed: July 22, 2005
    Date of Patent: August 19, 2008
    Assignee: Gennum Corporation
    Inventors: Apu Sivadas, Atul Krishna Gupta, Kenneth Steven Lazaris-Brunner, Vasilis Papanikolaou, Rajiv Kumar Shukla, Bharat Tailor
  • Patent number: 7317757
    Abstract: Transmit amplitude independent adaptive equalizers are provided that compensate for transmission losses in an input signal when the transmit signal amplitude is unknown. Several embodiments are provided, including a first embodiment having an equalizer core, a controllable-swing slicer and an amplitude control loop, a second embodiment having an equalizer core, a fixed-swing slicer and a control loop, a third embodiment having an equalizer core, a variable gain amplifier, and a variable gain amplifier control loop, and a fourth embodiment having an equalizer core, a fixed-swing slicer, a variable gain amplifier, and a variable gain amplifier control loop.
    Type: Grant
    Filed: July 22, 2005
    Date of Patent: January 8, 2008
    Assignee: Gennum Corporation
    Inventors: Apu Sivadas, Atul Krishna Gupta, Kenneth Steven Lazaris-Brunner, Vasilis Papanikolaou, Rajiv Kumar Shukla, Bharat Tailor
  • Patent number: 7180941
    Abstract: Transmit amplitude independent adaptive equalizers are provided that compensate for transmission losses in an input signal when the transmit signal amplitude is unknown. Several embodiments are provided, including a first embodiment having an equalizer core, a controllable-swing slicer and an amplitude control loop, a second embodiment having an equalizer core, a fixed-swing slicer and a control loop, a third embodiment having an equalizer core, a variable gain amplifier, and a variable gain amplifier control loop, and a fourth embodiment having an equalizer core, a fixed-swing slicer, a variable gain amplifier, and a variable gain amplifier control loop.
    Type: Grant
    Filed: July 22, 2005
    Date of Patent: February 20, 2007
    Assignee: Gennum Corporation
    Inventors: Apu Sivadas, Atul Krishna Gupta, Kenneth Steven Lazaris-Brunner, Vasilis Papanikolaou, Rajiv Kumar Shukla, Bharat Tailor
  • Publication number: 20060281793
    Abstract: The present invention relates to the effect of naturally occurring compounds on tumor development. As an example of proof, we used low; non-toxic doses of three compound e.g. Calcium D-glucarate, a naturally occurring Ca++ salt of D-glucaric acid; Nicotinamide (NA), a naturally occurring vitamin and butyric acid (BA), a naturally occurring saturated short chain fatty acid. 7,12 dimethylbenzanthracene (DMBA), which is a very potent skin carcinogen and is an environmental pollutant, was used for skin tumor development. Experiment was performed upto 30 weeks. All the above-mentioned compounds were used either alone or concomitantly any two or all the three. In the positive control group 100% tumorigenesis was attained in 28 weeks, use of single compound led to the inhibition of DMBA induced tumorigenesis between 33 to 47%, use of two compounds resulted in the 73 to 80% reduction in tumorigenesis but the concomitant use of three compounds resulted into 100% inhibition of tumor development at the end of 30 weeks.
    Type: Application
    Filed: November 29, 2005
    Publication date: December 14, 2006
    Inventors: Krishna Gupta, Jaya Singh
  • Publication number: 20050229679
    Abstract: A sample chamber includes a movable upper chamber. The movable upper chamber includes a center bore opening to a bottom of the chamber, at least one port for introduction of gas under pressure to the center bore, and a first annular seal around the center bore. A stationary lower seat opposing the upper chamber has a center bore aligned with the upper chamber. and includes an exhaust and a second annular seal around the center bore. A test material is placed between the upper chamber and the lower seat. An actuator moves the upper chamber. When the upper chamber is moved down with the first annular seal in contact with an upper surface of a sample of the material and the second annular seal in contact with a lower surface of the sample, gas introduced to the upper chamber goes through the upper chamber and out through the exhaust.
    Type: Application
    Filed: April 16, 2004
    Publication date: October 20, 2005
    Applicant: Porous Materials, Inc.
    Inventors: Krishna Gupta, Akshaya Jena, William Wilson
  • Publication number: 20050229682
    Abstract: A sample chamber includes a movable upper chamber. The movable upper chamber includes a center bore opening to a bottom of the chamber, at least one port for introduction of gas under pressure to the center bore, and a first annular seal around the center bore. A stationary lower seat opposing the upper chamber has a center bore aligned with the upper chamber. and includes an exhaust and a second annular seal around the center bore. A test material is placed between the upper chamber and the lower seat. An actuator moves the upper chamber. When the upper chamber is moved down with the first annular seal in contact with an upper surface of a sample of the material and the second annular seal in contact with a lower surface of the sample, gas introduced to the upper chamber goes through the upper chamber and out through the exhaust.
    Type: Application
    Filed: April 15, 2005
    Publication date: October 20, 2005
    Applicant: Porous Materials, Inc.
    Inventors: Krishna Gupta, Akshaya Jena, William Wilson
  • Patent number: 6956914
    Abstract: Transmit amplitude independent adaptive equalizers are provided that compensate for transmission losses in an input signal when the transmit signal amplitude is unknown. Several embodiments are provided, including a first embodiment having an equalizer core, a controllable-swing slicer and an amplitude control loop, a second embodiment having an equalizer core, a fixed-swing slicer and a control loop, a third embodiment having an equalizer core, a variable gain amplifier, and a variable gain amplifier control loop, and a fourth embodiment having an equalizer core, a fixed-swing slicer, a variable gain amplifier, and a variable gain amplifier control loop.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: October 18, 2005
    Assignee: Gennum Corporation
    Inventors: Apu Sivadas, Atul Krishna Gupta, Kenneth Steven Lazaris-Brunner, Vasilis Papanikolaou, Rajiv Kumar Shukla, Bharat Tailor
  • Patent number: 6791977
    Abstract: An improved reclocker circuit and router cell are provided that are particularly useful when configured into a router matrix comprising a plurality of interconnected router cells. The improved reclocker circuit includes an integral N-to-1 multiplexer (MUX), wherein N is at least three. The improved router cell includes the reclocker/MUX circuit, a switch, and a fan-out circuit. A plurality of ports are coupled to the router cell circuitry, including an input port, an output port, a plurality of expansion input ports, and a plurality of expansion output ports. The improved router cell couples either the input port or one the expansion input ports to its output port, and it also couples the input port to each of the expansion output ports. By using the improved router cells in the design of a router matrix, jitter induced by the reclocker circuits is minimized.
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: September 14, 2004
    Assignee: Gennum Corporation
    Inventors: Aapoolcoyuz Biman, Atul Krishna Gupta
  • Patent number: 6614314
    Abstract: A non-linear phase detector includes a retiming stage and a phase synchronization stage. The retiming stage is coupled to a data signal and a recovered clock signal. The retiming stage is triggered by the recovered clock signal and samples the data signal to generate a retimed data signal and a clock synchronization signal. The phase synchronization stage is coupled to the retimed data signal and the clock synchronization signal. The phase synchronization stage is triggered by the retimed data signal and samples the clock synchronization signal to generate a phase control signal.
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: September 2, 2003
    Assignee: Gennum Corporation
    Inventors: Wesley Calvin d'Haene, Atul Krishna Gupta
  • Publication number: 20030102928
    Abstract: A non-linear phase detector includes a retiming stage and a phase synchronization stage. The retiming stage is coupled to a data signal and a recovered clock signal. The retiming stage is triggered by the recovered clock signal and samples the data signal to generate a retimed data signal and a clock synchronization signal. The phase synchronization stage is coupled to the retimed data signal and the clock synchronization signal. The phase synchronization stage is triggered by the retimed data signal and samples the clock synchronization signal to generate a phase control signal.
    Type: Application
    Filed: December 3, 2001
    Publication date: June 5, 2003
    Inventors: Wesley Calvin d'Haene, Atul Krishna Gupta
  • Publication number: 20030053534
    Abstract: Transmit amplitude independent adaptive equalizers are provided that compensate for transmission losses in an input signal when the transmit signal amplitude is unknown. Several embodiments are provided, including a first embodiment having an equalizer core, a controllable-swing slicer and an amplitude control loop, a second embodiment having an equalizer core, a fixed-swing slicer and a control loop, a third embodiment having an equalizer core, a variable gain amplifier, and a variable gain amplifier control loop, and a fourth embodiment having an equalizer core, a fixed-swing slicer, a variable gain amplifier, and a variable gain amplifier control loop.
    Type: Application
    Filed: September 19, 2001
    Publication date: March 20, 2003
    Inventors: Apu Sivadas, Atul Krishna Gupta, Kenneth Steven Lazaris-Brunner, Vasilis Papanikolaou, Rajiv Kumar Shukla, Bharat Tailor
  • Patent number: 6288592
    Abstract: A cable driver is disclosed which provides a substantially linear output signal corresponding to an input signal received by the cable driver on a transmission line. The cable driver includes a number of switches coupled by delay elements with cause the switches to operate in a sequential order in response to an input signal. Each of the switches couples an associated current source to an output port, producing a substantially linear output signal on a transmission line connected to the output port. The substantially linearity of the output signal increases the rate at which data may be transmitted over the transmission line, while permitting the rise and fall time of a specified portion of the output signal to be controlled to ensure that electro-magnetic interference is not produced.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: September 11, 2001
    Assignee: Gennum Corporation
    Inventor: Atul Krishna Gupta
  • Patent number: 6118350
    Abstract: A system of resistive end termination and transmission line routing is disclosed for matching the impedance of an IC load to that of a signal source and a transmission line. Each integrated circuit has an internal termination resistor designed to match the characteristic impedance of the transmission line and preferably also the impedance of the source. When the source drives multiple IC devices on a printed circuit board, the devices are cascaded in a chain with the internal resistors of all but the last IC device in the chain bypassed by a short circuit underneath the device, so that a continuous transmission line is provided to the last IC device. The last IC in the chain, which does not have a short circuit underneath it, provides the necessary resistive termination by simply connecting the appropriate pin to a common reference in the circuit. The invention is also applicable to differential applications in which first and second complementary signal sources feed each IC device.
    Type: Grant
    Filed: November 10, 1998
    Date of Patent: September 12, 2000
    Assignee: Gennum Corporation
    Inventors: Atul Krishna Gupta, Dino Toffolon
  • Patent number: 4660412
    Abstract: A three-fluid method of non-mercury liquid intrusion porosimetry. The sample to be tested and a quantity of non-wetting intrusion liquid other than mercury are introduced into a sealable, pressurizable chamber, the sample being above the intrusion liquid. The chamber is sealed and evacuated. An intermediate pressurizing liquid, such as mercury, is introduced into the chamber and pressurized by a primary pressurization fluid, such as alcohol or oil, so as to force the intrusion liquid into the pores of the sample. The volume of intermediate pressurization liquid introduced into the chamber is measured as the pressure is increased incrementally, to find the pore distribution of the sample.
    Type: Grant
    Filed: December 16, 1985
    Date of Patent: April 28, 1987
    Assignee: Porous Materials Inc.
    Inventor: Krishna Gupta