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Patent Agency Ranking
公开(公告)号：US10705558B2
公开(公告)日：2020-07-07
申请号：US15967344
申请日：2018-04-30
Applicant: QUALCOMM Incorporated
Abstract: Certain aspects of the present disclosure provide an input clock switching system, including: a clock source configured to output a reference clock signal; a clock generator circuit connected to the clock source and configured to output a plurality of input clock signals based on the reference clock signal; an output clock multiplexer, configured to: receive the plurality of input clock signals; receive an output clock selection signal; and output a first clock signal, wherein the first clock signal is one of the input clock signals; and a glitch suppression circuit, configured to: receive the first clock signal; receive a glitch suppression signal; output a clock output signal, wherein the clock output signal is: the first clock signal when the glitch suppression signal is in a first state; and a logic low signal when the glitch suppression signal is in a second state.
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公开(公告)号：US10587253B1
公开(公告)日：2020-03-10
申请号：US16205093
申请日：2018-11-29
Applicant: QUALCOMM Incorporated
Inventor： Yu Huang , Nam Dang , Keith Alan Bowman , Navid Toosizadeh
Abstract: A programmable delay line includes a pulse generator configured to generate a pulse in response to a transition of an input signal; an oscillator configured to generate a clock in response to the pulse; a counter configured to change a current count from a first value towards a second value in response to periods of the clock; and a gating device configured to output the transition of the input signal to generate an output signal in response to the current count reaching the second value. The delay of the input signal is a function of the difference between the first value and the second value. The delay line may be used in different applications, such as a dynamic variation monitor (DVM) configured to detect supply voltage droop. The DVM may be in an adaptive clock distribution (ACD) to reduce the clock frequency for a datapath in response to a droop.
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公开(公告)号：US20180004276A1
公开(公告)日：2018-01-04
申请号：US15199567
申请日：2016-06-30
Applicant: QUALCOMM Incorporated
Inventor： Mong Chit Wong , Nam Dang , Rajeev Jain , Sassan Shahrokhinia , Yu Huang , Lipeng Cao
IPC: G06F1/32
Abstract: An integrated circuit (IC) is disclosed herein for adaptive power multiplexing with a power distribution network. In an example aspect, the integrated circuit includes a first power rail, a second power rail, and a load power rail. The integrated circuit also includes multiple power-multiplexer tiles and power-multiplexer control circuitry. The multiple power-multiplexer tiles are coupled in series in a chained arrangement and configured to jointly perform a power-multiplexing operation. Each power-multiplexer tile is configured to switch between coupling the load power rail to the first power rail and coupling the load power rail to the second power rail. The power-multiplexer control circuitry is configured to control a direction of current flow to prevent cross-conduction between the first power rail and the second power rail during the power-multiplexing operation.
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公开(公告)号：US11047946B2
公开(公告)日：2021-06-29
申请号：US15974271
申请日：2018-05-08
Applicant: QUALCOMM Incorporated
Inventor： Nam Dang , Rajeev Jain , Swarna Navubothu , Alan Lewis , Martin Saint-Laurent , Tung Nang Pham , Joseph Terregrossa , Paras Gupta , Somasekhar Maradani
Abstract: Aspects of the disclosure are directed to voltage-based current sensing. In accordance with one aspect, voltage-based current sensing may include performing a coarse calibration of a voltage based current sensor to determine a coarse offset; performing a fine calibration of the voltage based current sensor to determine a fine offset; performing a frequency calibration of the voltage based current sensor to determine a frequency offset; and performing a transfer function calibration of the voltage based current sensor to determine a sensor transfer function using one or more of the coarse offset, the fine offset and the frequency offset; and measuring a load current using the sensor transfer function.
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公开(公告)号：US09990022B2
公开(公告)日：2018-06-05
申请号：US15199567
申请日：2016-06-30
Applicant: QUALCOMM Incorporated
Inventor： Mong Chit Wong , Nam Dang , Rajeev Jain , Sassan Shahrokhinia , Yu Huang , Lipeng Cao
Abstract: An integrated circuit (IC) is disclosed herein for adaptive power multiplexing with a power distribution network. In an example aspect, the integrated circuit includes a first power rail, a second power rail, and a load power rail. The integrated circuit also includes multiple power-multiplexer tiles and power-multiplexer control circuitry. The multiple power-multiplexer tiles are coupled in series in a chained arrangement and configured to jointly perform a power-multiplexing operation. Each power-multiplexer tile is configured to switch between coupling the load power rail to the first power rail and coupling the load power rail to the second power rail. The power-multiplexer control circuitry is configured to control a direction of current flow to prevent cross-conduction between the first power rail and the second power rail during the power-multiplexing operation.
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