Patents by Inventor Ravikumar Pattipaka
Ravikumar Pattipaka 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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Publication number: 20240120962Abstract: An ultrasound system includes a transmit-receive switch. The transmit-receive switch includes a combined transmit-receive and return-to-zero (RTZ) path. The combined transmit-receive and RTZ path includes a transistor with a first current terminal, a second current terminal, and a control terminal. The second current terminal of the transistor is coupled to a ground node via a first switch and is coupled to a receive node via a second switch. The ultrasound system also includes a receiver front-end circuit coupled to the receive node.Type: ApplicationFiled: December 18, 2023Publication date: April 11, 2024Inventors: Aravind MIRIYALA, Ravikumar PATTIPAKA, Raja Sekhar KANAKAMEDALA, Sandeep Kesrimal OSWAL
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Patent number: 11888509Abstract: An ultrasound system includes a transmit-receive switch. The transmit-receive switch includes a combined transmit-receive and return-to-zero (RTZ) path. The combined transmit-receive and RTZ path includes a transistor with a first current terminal, a second current terminal, and a control terminal. The second current terminal of the transistor is coupled to a ground node via a first switch and is coupled to a receive node via a second switch. The ultrasound system also includes a receiver front-end circuit coupled to the receive node.Type: GrantFiled: December 28, 2018Date of Patent: January 30, 2024Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Aravind Miriyala, Ravikumar Pattipaka, Raja Sekhar Kanakamedala, Sandeep Kesrimal Oswal
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Patent number: 11740208Abstract: A delay line control circuit includes a pseudo-random number generator and a random phase generator circuit coupled to the pseudo-random number generator. The pseudo-random number generator is configured to produce a predetermined sequence of pseudo-random values. The random phase generator circuit is configured to randomize an access sequence for capacitors of a delay line. The random phase generator circuit includes a sequence register, an adder, and gating circuitry. The sequence register is configured to a store a value identifying one of the capacitors to be accessed. The adder is coupled to the sequence register, and is configured to increment the value stored in sequence register. The gating circuitry is coupled to the pseudo-random number generator and the adder. The gating circuitry is configured to pass one of the pseudo-random values to the adder for addition to the value stored in the sequence register.Type: GrantFiled: June 17, 2021Date of Patent: August 29, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Prashuk Jain, Ravikumar Pattipaka, Vajeed Nimran Parambil Abdul Raheem, Sandeep Kesrimal Oswal
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Patent number: 11662448Abstract: Methods and apparatus for reducing a transient glitch in ultrasound applications are disclosed. An example apparatus includes a transducer to (A) output a signal during a transmit phase and (B) receive a reflected signal corresponding to the signal during a receive phase; a receiver switch coupled to the transducer at a first node, the receiver switch to (A) open during the transmit phase and (B) close during the receive phase; and a clamp coupled to the transducer at the first node, the clamp to provide a high impedance during the transmit phase and the receive phase and provide a low impedance during a transient phase.Type: GrantFiled: September 28, 2021Date of Patent: May 30, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Ravikumar Pattipaka, Raja Sekhar Kanakamedala, Aravind Miriyala, Vajeed Nimran P A, Sandeep Kesrimal Oswal
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Publication number: 20220011420Abstract: Methods and apparatus for reducing a transient glitch in ultrasound applications are disclosed. An example apparatus includes a transducer to (A) output a signal during a transmit phase and (B) receive a reflected signal corresponding to the signal during a receive phase; a receiver switch coupled to the transducer at a first node, the receiver switch to (A) open during the transmit phase and (B) close during the receive phase; and a clamp coupled to the transducer at the first node, the clamp to provide a high impedance during the transmit phase and the receive phase and provide a low impedance during a transient phase.Type: ApplicationFiled: September 28, 2021Publication date: January 13, 2022Inventors: RAVIKUMAR PATTIPAKA, RAJA SEKHAR KANAKAMEDALA, ARAVIND MIRIYALA, VAJEED NIMRAN P A, SANDEEP KESRIMAL OSWAL
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Patent number: 11163046Abstract: Methods and apparatus for reducing a transient glitch in ultrasound applications are disclosed. An example apparatus includes a transducer to (A) output a signal during a transmit phase and (B) receive a reflected signal corresponding to the signal during a receive phase; a receiver switch coupled to the transducer at a first node, the receiver switch to (A) open during the transmit phase and (B) close during the receive phase; and a clamp coupled to the transducer at the first node, the clamp to provide a high impedance during the transmit phase and the receive phase and provide a low impedance during a transient phase.Type: GrantFiled: April 27, 2020Date of Patent: November 2, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Ravikumar Pattipaka, Raja Sekhar Kanakamedala, Aravind Miriyala, Vajeed Nimran P A, Sandeep Kesrimal Oswal
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Publication number: 20210310996Abstract: A delay line control circuit includes a pseudo-random number generator and a random phase generator circuit coupled to the pseudo-random number generator. The pseudo-random number generator is configured to produce a predetermined sequence of pseudo-random values. The random phase generator circuit is configured to randomize an access sequence for capacitors of a delay line. The random phase generator circuit includes a sequence register, an adder, and gating circuitry. The sequence register is configured to a store a value identifying one of the capacitors to be accessed. The adder is coupled to the sequence register, and is configured to increment the value stored in sequence register. The gating circuitry is coupled to the pseudo-random number generator and the adder. The gating circuitry is configured to pass one of the pseudo-random values to the adder for addition to the value stored in the sequence register.Type: ApplicationFiled: June 17, 2021Publication date: October 7, 2021Inventors: Prashuk JAIN, Ravikumar PATTIPAKA, Vajeed Nimran PARAMBIL ABDUL RAHEEM, Sandeep Kesrimal OSWAL
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Patent number: 11067544Abstract: A delay line control circuit includes a pseudo-random number generator and a random phase generator circuit coupled to the pseudo-random number generator. The pseudo-random number generator is configured to produce a predetermined sequence of pseudo-random values. The random phase generator circuit is configured to randomize an access sequence for capacitors of a delay line. The random phase generator circuit includes a sequence register, an adder, and gating circuitry. The sequence register is configured to a store a value identifying one of the capacitors to be accessed. The adder is coupled to the sequence register, and is configured to increment the value stored in sequence register. The gating circuitry is coupled to the pseudo-random number generator and the adder. The gating circuitry is configured to pass one of the pseudo-random values to the adder for addition to the value stored in the sequence register.Type: GrantFiled: December 14, 2018Date of Patent: July 20, 2021Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Prashuk Jain, Ravikumar Pattipaka, Vajeed Nimran Parambil Abdul Raheem, Sandeep Kesrimal Oswal
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Publication number: 20200256970Abstract: Methods and apparatus for reducing a transient glitch in ultrasound applications are disclosed. An example apparatus includes a transducer to (A) output a signal during a transmit phase and (B) receive a reflected signal corresponding to the signal during a receive phase; a receiver switch coupled to the transducer at a first node, the receiver switch to (A) open during the transmit phase and (B) close during the receive phase; and a clamp coupled to the transducer at the first node, the clamp to provide a high impedance during the transmit phase and the receive phase and provide a low impedance during a transient phase.Type: ApplicationFiled: April 27, 2020Publication date: August 13, 2020Inventors: RAVIKUMAR PATTIPAKA, RAJA SEKHAR KANAKAMEDALA, ARAVIND MIRIYALA, VAJEED NIMRAN P A, SANDEEP KESRIMAL OSWAL
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Publication number: 20200212954Abstract: An ultrasound system includes a transmit-receive switch. The transmit-receive switch includes a combined transmit-receive and return-to-zero (RTZ) path. The combined transmit-receive and RTZ path includes a transistor with a first current terminal, a second current terminal, and a control terminal. The second current terminal of the transistor is coupled to a ground node via a first switch and is coupled to a receive node via a second switch. The ultrasound system also includes a receiver front-end circuit coupled to the receive node.Type: ApplicationFiled: December 28, 2018Publication date: July 2, 2020Inventors: Aravind MIRIYALA, Ravikumar PATTIPAKA, Raja Sekhar KANAKAMEDALA, Sandeep Kesrimal OSWAL
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Patent number: 10677903Abstract: Methods and apparatus for reducing a transient glitch in ultrasound applications are disclosed. An example apparatus includes a transducer to (A) output a signal during a transmit phase and (B) receive a reflected signal corresponding to the signal during a receive phase; a receiver switch coupled to the transducer at a first node, the receiver switch to (A) open during the transmit phase and (B) close during the receive phase; and a clamp coupled to the transducer at the first node, the clamp to provide a high impedance during the transmit phase and the receive phase and provide a low impedance during a transient phase.Type: GrantFiled: December 2, 2016Date of Patent: June 9, 2020Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Ravikumar Pattipaka, Raja Sekhar Kanakamedala, Aravind Miriyala, Vajeed Nimran P A, Sandeep Kesrimal Oswal
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Publication number: 20200129152Abstract: A delay line control circuit includes a pseudo-random number generator and a random phase generator circuit coupled to the pseudo-random number generator. The pseudo-random number generator is configured to produce a predetermined sequence of pseudo-random values. The random phase generator circuit is configured to randomize an access sequence for capacitors of a delay line. The random phase generator circuit includes a sequence register, an adder, and gating circuitry. The sequence register is configured to a store a value identifying one of the capacitors to be accessed. The adder is coupled to the sequence register, and is configured to increment the value stored in sequence register. The gating circuitry is coupled to the pseudo-random number generator and the adder. The gating circuitry is configured to pass one of the pseudo-random values to the adder for addition to the value stored in the sequence register.Type: ApplicationFiled: December 14, 2018Publication date: April 30, 2020Inventors: Prashuk JAIN, Ravikumar PATTIPAKA, Vajeed Nimran PARAMBIL ABDUL RAHEEM, Sandeep Kesrimal OSWAL
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Patent number: 10573292Abstract: A passive beamformer for ultrasound imaging. An ultrasound probe includes a plurality of ultrasound transducers and beamforming circuitry. Each of the ultrasound transducers is configured to convert ultrasonic signal into electrical signal. The beamforming circuitry is coupled to the plurality of ultrasound transducers. The beamforming circuitry includes a plurality of passive delay circuits and a passive hold circuit. One of the passive delay circuits is coupled to each of the ultrasound transducers. The passive hold circuit is coupled to the passive delay circuits to store a sum of the charges received from the delay circuits.Type: GrantFiled: October 13, 2017Date of Patent: February 25, 2020Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Ravikumar Pattipaka, Vajeed Nimran, Sandeep Oswal
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Patent number: 10319362Abstract: The disclosure provides a level shifter. The level shifter includes a first logic block that receives an input signal and generates a primary pulsed input. A first transistor is coupled to the first logic block and a first node. A gate terminal of the first transistor receives the primary pulsed input. A latch is coupled to the first node and a second node. A second logic block receives the input signal and generates a secondary pulsed input. A second transistor is coupled between the second logic block and the second node. A gate terminal of the second transistor receives the secondary pulsed input.Type: GrantFiled: October 25, 2017Date of Patent: June 11, 2019Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Ravikumar Pattipaka, Raja Sekhar Kanakamedala, Aravind Miriyala, Sandeep Kesrimal Oswal
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Publication number: 20180156903Abstract: Methods and apparatus for reducing a transient glitch in ultrasound applications are disclosed. An example apparatus includes a transducer to (A) output a signal during a transmit phase and (B) receive a reflected signal corresponding to the signal during a receive phase; a receiver switch coupled to the transducer at a first node, the receiver switch to (A) open during the transmit phase and (B) close during the receive phase; and a clamp coupled to the transducer at the first node, the clamp to provide a high impedance during the transmit phase and the receive phase and provide a low impedance during a transient phase.Type: ApplicationFiled: December 2, 2016Publication date: June 7, 2018Inventors: RAVIKUMAR PATTIPAKA, RAJA SEKHAR KANAKAMEDALA, ARAVIND MIRIYALA, VAJEED NIMRAN P A, SANDEEP KESRIMAL OSWAL
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Publication number: 20180137853Abstract: A passive beamformer for ultrasound imaging. An ultrasound probe includes a plurality of ultrasound transducers and beamforming circuitry. Each of the ultrasound transducers is configured to convert ultrasonic signal into electrical signal. The beamforming circuitry is coupled to the plurality of ultrasound transducers. The beamforming circuitry includes a plurality of passive delay circuits and a passive hold circuit. One of the passive delay circuits is coupled to each of the ultrasound transducers. The passive hold circuit is coupled to the passive delay circuits to store a sum of the charges received from the delay circuits.Type: ApplicationFiled: October 13, 2017Publication date: May 17, 2018Inventors: Ravikumar PATTIPAKA, Vajeed NIMRAN, Sandeep OSWAL
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Publication number: 20180122360Abstract: The disclosure provides a level shifter. The level shifter includes a first logic block that receives an input signal and generates a primary pulsed input. A first transistor is coupled to the first logic block and a first node. A gate terminal of the first transistor receives the primary pulsed input. A latch is coupled to the first node and a second node. A second logic block receives the input signal and generates a secondary pulsed input. A second transistor is coupled between the second logic block and the second node. A gate terminal of the second transistor receives the secondary pulsed input.Type: ApplicationFiled: October 25, 2017Publication date: May 3, 2018Inventors: Ravikumar Pattipaka, Raja Sekhar Kanakamedala, Aravind Miriyala, Sandeep Kesrimal Oswal