Patents by Inventor Atul Krishna Gupta
Atul 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).
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Patent number: 8934598Abstract: 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: GrantFiled: April 5, 2013Date of Patent: January 13, 2015Assignee: Mindspeed Technologies, Inc.Inventors: Atul Krishna Gupta, Ryan Suresh Latchman, Nicolas Alain Paul Nodenot
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Patent number: 8798044Abstract: 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: GrantFiled: April 27, 2011Date of Patent: August 5, 2014Assignee: Mindspeed Technologies, Inc.Inventor: Atul Krishna Gupta
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Publication number: 20130329130Abstract: 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: ApplicationFiled: April 5, 2013Publication date: December 12, 2013Applicant: Mindspeed Technologies, Inc.Inventors: Atul Krishna Gupta, Ryan Suresh Latchman, Nicolas Alain Paul Nodenot
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Publication number: 20120274383Abstract: 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: ApplicationFiled: April 27, 2011Publication date: November 1, 2012Applicant: MINDSPEED TECHNOLOGIES, INC.Inventor: Atul Krishna Gupta
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Patent number: 7415064Abstract: 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: GrantFiled: July 22, 2005Date of Patent: August 19, 2008Assignee: Gennum CorporationInventors: Apu Sivadas, Atul Krishna Gupta, Kenneth Steven Lazaris-Brunner, Vasilis Papanikolaou, Rajiv Kumar Shukla, Bharat Tailor
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Patent number: 7317757Abstract: 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: GrantFiled: July 22, 2005Date of Patent: January 8, 2008Assignee: Gennum CorporationInventors: Apu Sivadas, Atul Krishna Gupta, Kenneth Steven Lazaris-Brunner, Vasilis Papanikolaou, Rajiv Kumar Shukla, Bharat Tailor
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Patent number: 7180941Abstract: 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: GrantFiled: July 22, 2005Date of Patent: February 20, 2007Assignee: Gennum CorporationInventors: Apu Sivadas, Atul Krishna Gupta, Kenneth Steven Lazaris-Brunner, Vasilis Papanikolaou, Rajiv Kumar Shukla, Bharat Tailor
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Patent number: 6956914Abstract: 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: GrantFiled: September 19, 2001Date of Patent: October 18, 2005Assignee: Gennum CorporationInventors: Apu Sivadas, Atul Krishna Gupta, Kenneth Steven Lazaris-Brunner, Vasilis Papanikolaou, Rajiv Kumar Shukla, Bharat Tailor
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Patent number: 6791977Abstract: 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: GrantFiled: October 17, 2000Date of Patent: September 14, 2004Assignee: Gennum CorporationInventors: Aapoolcoyuz Biman, Atul Krishna Gupta
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Patent number: 6614314Abstract: 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: GrantFiled: December 3, 2001Date of Patent: September 2, 2003Assignee: Gennum CorporationInventors: Wesley Calvin d'Haene, Atul Krishna Gupta
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Publication number: 20030102928Abstract: 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: ApplicationFiled: December 3, 2001Publication date: June 5, 2003Inventors: Wesley Calvin d'Haene, Atul Krishna Gupta
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Publication number: 20030053534Abstract: 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: ApplicationFiled: September 19, 2001Publication date: March 20, 2003Inventors: Apu Sivadas, Atul Krishna Gupta, Kenneth Steven Lazaris-Brunner, Vasilis Papanikolaou, Rajiv Kumar Shukla, Bharat Tailor
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Patent number: 6288592Abstract: 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: GrantFiled: January 21, 1998Date of Patent: September 11, 2001Assignee: Gennum CorporationInventor: Atul Krishna Gupta
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Patent number: 6118350Abstract: 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: GrantFiled: November 10, 1998Date of Patent: September 12, 2000Assignee: Gennum CorporationInventors: Atul Krishna Gupta, Dino Toffolon