Patents by Inventor Venkat Narayanan
Venkat Narayanan 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: 12531547Abstract: A system includes a first sense amplifier having a first data input, a second data input, a clock input configured to receive a first clock signal, a first output, and a second output. The system also includes a second sense amplifier having a first data input, a second data input, a clock input configured to receive a second clock signal, a first output, and a second output. The first data input of the second sense amplifier is coupled to the first data input of the first sense amplifier, and the second data input of the second sense amplifier is coupled to the second data input of the first sense amplifier. The system also includes a set-reset (S-R) latch coupled to the first output and the second output of the first sense amplifier, and coupled to the first output and the second output of the second sense amplifier.Type: GrantFiled: December 12, 2023Date of Patent: January 20, 2026Assignee: QUALCOMM INCORPORATEDInventors: Tianyu Tang, Wei-Yen Chen, Janus Chiu, Rui Li, De Lu, Venkat Narayanan
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Publication number: 20250192755Abstract: A system includes a first sense amplifier having a first data input, a second data input, a clock input configured to receive a first clock signal, a first output, and a second output. The system also includes a second sense amplifier having a first data input, a second data input, a clock input configured to receive a second clock signal, a first output, and a second output. The first data input of the second sense amplifier is coupled to the first data input of the first sense amplifier, and the second data input of the second sense amplifier is coupled to the second data input of the first sense amplifier. The system also includes a set-reset (S-R) latch coupled to the first output and the second output of the first sense amplifier, and coupled to the first output and the second output of the second sense amplifier.Type: ApplicationFiled: December 12, 2023Publication date: June 12, 2025Inventors: Tianyu TANG, Wei-Yen CHEN, Janus CHIU, Rui LI, De LU, Venkat NARAYANAN
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Patent number: 12323142Abstract: At least one integrated power management cell of an IC includes a first cell, which is a 4-height cell, that includes a first continuous n-well, a first power interconnect coupled to a first voltage source associated with a first voltage domain and to the first continuous n-well, a second continuous n-well, a second power interconnect coupled to a second voltage source associated with a second voltage domain and to the second continuous n-well, a first subset of a first voltage level shifter associated with the first voltage domain and coupled to the first power interconnect, and a second subset of the first voltage level shifter associated with the second voltage domain and coupled to the second power interconnect.Type: GrantFiled: November 7, 2023Date of Patent: June 3, 2025Assignee: QUALCOMM INCORPORATEDInventors: Ramaprasath Vilangudipitchai, Venkat Narayanan, Giby Samson, Venugopal Boynapalli
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Publication number: 20250150080Abstract: At least one integrated power management cell of an IC includes a first cell, which is a 4-height cell, that includes a first continuous n-well, a first power interconnect coupled to a first voltage source associated with a first voltage domain and to the first continuous n-well, a second continuous n-well, a second power interconnect coupled to a second voltage source associated with a second voltage domain and to the second continuous n-well, a first subset of a first voltage level shifter associated with the first voltage domain and coupled to the first power interconnect, and a second subset of the first voltage level shifter associated with the second voltage domain and coupled to the second power interconnect.Type: ApplicationFiled: November 7, 2023Publication date: May 8, 2025Inventors: Ramaprasath VILANGUDIPITCHAI, Venkat NARAYANAN, Giby SAMSON, Venugopal BOYNAPALLI
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Patent number: 12095459Abstract: In certain aspects, an apparatus includes a first gating circuit having an input and an output, wherein the input of the first gating circuit is configured to receive a first clock signal. The apparatus also includes a delay circuit having an input and an output, wherein the input of the delay circuit is coupled to the output of the first gating circuit. The apparatus further includes a control circuit configured to receive an enable signal, detect a logic state at the output of the delay circuit, and cause the first gating circuit to pass or gate the first clock signal based on the enable signal and the detected logic state at the output of the delay circuit.Type: GrantFiled: June 1, 2022Date of Patent: September 17, 2024Assignee: QUALCOMM INCORPORATEDInventors: Kevin Bowles, Chirag Maheshwari, Divya Gangadharan, Venkat Narayanan, Masoud Zamani
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Publication number: 20230396253Abstract: In certain aspects, an apparatus includes a first gating circuit having an input and an output, wherein the input of the first gating circuit is configured to receive a first clock signal. The apparatus also includes a delay circuit having an input and an output, wherein the input of the delay circuit is coupled to the output of the first gating circuit. The apparatus further includes a control circuit configured to receive an enable signal, detect a logic state at the output of the delay circuit, and cause the first gating circuit to pass or gate the first clock signal based on the enable signal and the detected logic state at the output of the delay circuit.Type: ApplicationFiled: June 1, 2022Publication date: December 7, 2023Inventors: Kevin BOWLES, Chirag MAHESHWARI, Divya GANGADHARAN, Venkat NARAYANAN, Masoud ZAMANI
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Patent number: 11823962Abstract: Aspects of the disclosure are directed to sensing integrated circuit (IC) Back End Of Line (BEOL) process corners. In one aspect, an apparatus for sensing IC BEOL process corners includes a ring oscillator including a plurality of ring oscillator stages configured to generate an output waveform with a frequency state; and a shield net circuit including a plurality of shield net stages corresponding to the plurality of ring oscillator stages, the shield net circuit having a toggle input. And, a method includes generating an output waveform with a frequency state using a ring oscillator that includes a plurality of ring oscillator stages; modifying a plurality of ring oscillator stage time delays through a coupling between a plurality of shield net stages and the plurality of ring oscillator stages; and selecting the frequency state using a toggle input of a shield net circuit which includes the plurality of shield net stages.Type: GrantFiled: February 19, 2021Date of Patent: November 21, 2023Assignee: QUALCOMM INCORPORATEDInventors: Saravanan Marimuthu, De Lu, Baldeo Sharan Sharma, Peeyush Kumar Parkar, Venkat Narayanan, Rui Li, Samy Shafik Tawfik Zaynoun, Min Chen, David Kidd, Amit Patil
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Patent number: 11810636Abstract: An aspect of the disclosure relates to a latch array, including: a first set of master latches including a first set of clock inputs configured to receive a master clock, a first set of data inputs configured to receive a first set of data, and a first set of data outputs coupled to a set of bitlines, respectively; a second set of master latches including a second set of clock inputs configured to receive the master clock, a first set of write-bit inputs configured to receive a set of write-bit signals, and a set of write-bit outputs coupled to a set of write-bit lines, respectively; and an array of slave latches, wherein the slave latches in columns of the array include a second set of data inputs coupled to the set of bitlines, and a second set of write-bit inputs coupled to the set of write-bit lines, respectively.Type: GrantFiled: January 12, 2022Date of Patent: November 7, 2023Assignee: QUALCOMM INCORPORATEDInventors: Rui Li, De Lu, Venkat Narayanan
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Publication number: 20230223054Abstract: An aspect of the disclosure relates to a latch array, including: a first set of master latches including a first set of clock inputs configured to receive a master clock, a first set of data inputs configured to receive a first set of data, and a first set of data outputs coupled to a set of bitlines, respectively; a second set of master latches including a second set of clock inputs configured to receive the master clock, a first set of write-bit inputs configured to receive a set of write-bit signals, and a set of write-bit outputs coupled to a set of write-bit lines, respectively; and an array of slave latches, wherein the slave latches in columns of the array include a second set of data inputs coupled to the set of bitlines, and a second set of write-bit inputs coupled to the set of write-bit lines, respectively.Type: ApplicationFiled: January 12, 2022Publication date: July 13, 2023Inventors: Rui LI, De LU, Venkat NARAYANAN
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Patent number: 11695393Abstract: A latch array including a row of master latches coupled to columns of slave latches. Each master latch includes an OR-AND-Inverter (OAI) gate cross-coupled with a NAND gate to receive and latch an input data, and each slave latch includes an AND-OR-Inverter (AOI) gate cross-coupled with a NOR gate to receive and latch the data from the master latch, and an inverter including an input coupled to the AOI gate and an output to produce an output data based on the input data. Alternatively, each master latch includes an AND-OR-Inverter (AOI) gate cross-coupled with a NOR gate to receive and latch an input data, and each slave latch includes an OR-AND-Inverter (OAI) gate cross-coupled with a NAND gate to receive and latch the data from the master latch, and an inverter including an input coupled to the OAI gate and an output to produce an output data.Type: GrantFiled: January 29, 2021Date of Patent: July 4, 2023Assignee: QUALCOMM INCORPORATEDInventors: Rui Li, De Lu, Venkat Narayanan
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Publication number: 20220270938Abstract: Aspects of the disclosure are directed to sensing integrated circuit (IC) Back End Of Line (BEOL) process corners. In one aspect, an apparatus for sensing IC BEOL process corners includes a ring oscillator including a plurality of ring oscillator stages configured to generate an output waveform with a frequency state; and a shield net circuit including a plurality of shield net stages corresponding to the plurality of ring oscillator stages, the shield net circuit having a toggle input. And, a method includes generating an output waveform with a frequency state using a ring oscillator that includes a plurality of ring oscillator stages; modifying a plurality of ring oscillator stage time delays through a coupling between a plurality of shield net stages and the plurality of ring oscillator stages; and selecting the frequency state using a toggle input of a shield net circuit which includes the plurality of shield net stages.Type: ApplicationFiled: February 19, 2021Publication date: August 25, 2022Inventors: Saravanan MARIMUTHU, De LU, Baldeo Sharan SHARMA, Peeyush Kumar PARKAR, Venkat NARAYANAN, Rui LI, Samy Shafik Tawfik ZAYNOUN, Min CHEN, David KIDD, Amit PATIL
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Publication number: 20220247391Abstract: A latch array including a row of master latches coupled to columns of slave latches. Each master latch includes an OR-AND-Inverter (OAI) gate cross-coupled with a NAND gate to receive and latch an input data, and each slave latch includes an AND-OR-Inverter (AOI) gate cross-coupled with a NOR gate to receive and latch the data from the master latch, and an inverter including an input coupled to the AOI gate and an output to produce an output data based on the input data. Alternatively, each master latch includes an AND-OR-Inverter (AOI) gate cross-coupled with a NOR gate to receive and latch an input data, and each slave latch includes an OR-AND-Inverter (OAI) gate cross-coupled with a NAND gate to receive and latch the data from the master latch, and an inverter including an input coupled to the OAI gate and an output to produce an output data.Type: ApplicationFiled: January 29, 2021Publication date: August 4, 2022Inventors: Rui LI, De LU, Venkat NARAYANAN
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Patent number: 11334321Abstract: A true random number generator (TRNG) for generating a sequence of random numbers of bits is disclosed. The TRNG includes a TRNG cell configured to generate a sequence of bits logically alternating with a mean frequency and with substantially random period jitter; a period monitor configured to generate a first sequence of random bits based on a set of periods of the sequence of logically alternating bits; and a sampling circuit configured to sample the first sequence of random bits in response to a sampling clock to generate a second sequence of random bits.Type: GrantFiled: June 26, 2020Date of Patent: May 17, 2022Assignee: QUALCOMM INCORPORATEDInventors: Rui Li, De Lu, Venkat Narayanan, Srivatsan Chellappa
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Publication number: 20210405973Abstract: A true random number generator (TRNG) for generating a sequence of random numbers of bits is disclosed. The TRNG includes a TRNG cell configured to generate a sequence of bits logically alternating with a mean frequency and with substantially random period jitter; a period monitor configured to generate a first sequence of random bits based on a set of periods of the sequence of logically alternating bits; and a sampling circuit configured to sample the first sequence of random bits in response to a sampling clock to generate a second sequence of random bits.Type: ApplicationFiled: June 26, 2020Publication date: December 30, 2021Inventors: Rui LI, De LU, Venkat NARAYANAN, Srivatsan CHELLAPPA
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Patent number: 10073726Abstract: Outage detection in a cloud based service is provided using usage data based error signals. Usage data is collected from component of the cloud based service or client devices of the cloud based service based on customer actions on the cloud based service. The usage data is aggregated and normalized to generate an error signal from errors generated from a component of the cloud based service. An outage is detected from the error signal. An alert that includes information associated with the outage and one or more customers impacted by the outage is generated.Type: GrantFiled: September 2, 2014Date of Patent: September 11, 2018Assignee: Microsoft Technology Licensing, LLCInventors: Olga Ivanova, Venkat Narayanan, Smita Ojha, Lei He, Art Sadovsky, Yi Wang, Ashish Premaraj
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Patent number: 10038429Abstract: A flip-flop is provided that includes a sense-amplifier-based master latch clocked by a first edge of a delayed version of a clock signal. A slave latch includes a cross-coupled pair of logic gates for latching a data output signal responsive to a second edge of the clock signal.Type: GrantFiled: August 22, 2017Date of Patent: July 31, 2018Assignee: QUALCOMM IncorporatedInventors: Venkat Narayanan, Qi Ye, Manish Srivastava, Venugopal Boynapalli
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Publication number: 20180158506Abstract: The apparatus provided includes a memory. The memory is configured to receive a memory clock. The apparatus also includes a single stage logic gate configured to generate the memory clock from a reference clock. The memory clock is a gated clock. Additionally, the memory clock has a wider pulse width than the reference clock. In an example, the single stage logic gate comprises a pull-up circuit configured to pull-up the memory clock, and a pull-down circuit coupled to pull-down the memory clock. In an example, the pull-up and the pull-down circuits are configured to be controlled by the reference clock, a delayed reference clock, and a gating signal. An example further includes a delay circuit configured to generate the delayed reference clock from the reference clock. An example further includes a latch configured to generate the gating signal.Type: ApplicationFiled: December 6, 2016Publication date: June 7, 2018Inventors: Dorav KUMAR, Venkat NARAYANAN, Bilal ZAFAR, Seid Hadi RASOULI, Venugopal BOYNAPALLI
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Patent number: 9990984Abstract: The apparatus provided includes a memory. The memory is configured to receive a memory clock. The apparatus also includes a single stage logic gate configured to generate the memory clock from a reference clock. The memory clock is a gated clock. Additionally, the memory clock has a wider pulse width than the reference clock. In an example, the single stage logic gate comprises a pull-up circuit configured to pull-up the memory clock, and a pull-down circuit coupled to pull-down the memory clock. In an example, the pull-up and the pull-down circuits are configured to be controlled by the reference clock, a delayed reference clock, and a gating signal. An example further includes a delay circuit configured to generate the delayed reference clock from the reference clock. An example further includes a latch configured to generate the gating signal.Type: GrantFiled: December 6, 2016Date of Patent: June 5, 2018Assignee: QUALCOMM IncorporatedInventors: Dorav Kumar, Venkat Narayanan, Bilal Zafar, Seid Hadi Rasouli, Venugopal Boynapalli
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Patent number: 9948303Abstract: In one embodiment, a voltage level shifter includes a first p-type metal-oxide-semiconductor (PMOS) transistor having a gate configured to receive an input signal in a first power domain, and a second PMOS transistor, wherein the first and second PMOS transistors are coupled in series between a supply voltage of a second power domain and a node. The voltage level shifter also includes an inverter having an input coupled to the node and an output coupled to a gate of the second PMOS transistor, and a first n-type metal-oxide-semiconductor (NMOS) transistor having a gate configured to receive the input signal in the first power domain, wherein the first NMOS transistor is coupled between the node and a ground.Type: GrantFiled: December 2, 2016Date of Patent: April 17, 2018Assignee: QUALCOMM IncorporatedInventors: Venkat Narayanan, Rakesh Vattikonda, De Lu, Ramaprasath Vilangudipitchai, Samrat Sinharoy, Rui Chen
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Publication number: 20180006650Abstract: In one embodiment, a voltage level shifter includes a first NOR gate having a first input configured to receive a first input signal in a first power domain, a second input configured to receive an enable signal in a second power domain, a third input, and an output. The voltage level shifter also includes a second NOR gate having a first input configured to receive a second input signal in the first power domain, a second input configured to receive the enable signal in the second power domain, a third input coupled to the output of the first NOR gate, and an output coupled to the third input of the first NOR gate. The first and second NOR gates are powered by a supply voltage of the second power domain.Type: ApplicationFiled: December 2, 2016Publication date: January 4, 2018Inventors: Venkat Narayanan, Rakesh Vattikonda, De Lu, Ramaprasath Vilangudipitchai, Samrat Sinharoy, Rui Chen