Patents by Inventor Stewart S. Taylor

Stewart S. Taylor 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: 20240379074
    Abstract: A system, circuit, and method for implementing a low power common electrode voltage for a display (e.g., LcoS display) having transistors with low to moderate breakdown voltages may include a first and a second low voltage amplifier, wherein the first amplifier generates a pixel voltage and the second amplifier generates a predetermined voltage. The circuit may include a common electrode circuit coupled to the first and second amplifier to generate a common electrode voltage. Particularly, the circuit may include a control circuit coupled to the common electrode circuit, wherein, during a first phase, the control circuit selectively controls the common electrode circuit to generate a low common electrode voltage based upon a negative value of the predetermined voltage. Further, during a second phase, the control circuit selectively controls the common electrode circuit to generate a high common electrode voltage based upon the sum of the predetermined voltage and the pixel voltage.
    Type: Application
    Filed: July 25, 2024
    Publication date: November 14, 2024
    Inventor: Stewart S. Taylor
  • Patent number: 12087248
    Abstract: A system, circuit, and method for implementing a low power common electrode voltage for a display (e.g., LcoS display) having transistors with low to moderate breakdown voltages may include a first and a second low voltage amplifier, wherein the first amplifier generates a pixel voltage and the second amplifier generates a predetermined voltage. The circuit may include a common electrode circuit coupled to the first and second amplifier to generate a common electrode voltage. Particularly, the circuit may include a control circuit coupled to the common electrode circuit, wherein, during a first phase, the control circuit selectively controls the common electrode circuit to generate a low common electrode voltage based upon a negative value of the predetermined voltage. Further, during a second phase, the control circuit selectively controls the common electrode circuit to generate a high common electrode voltage based upon the sum of the predetermined voltage and the pixel voltage.
    Type: Grant
    Filed: August 16, 2023
    Date of Patent: September 10, 2024
    Assignee: Snap Inc.
    Inventor: Stewart S. Taylor
  • Publication number: 20240291453
    Abstract: An amplifier circuit including a first folded double cascode stage configured to receive a differential input signal at a first pair of input transistors and generate a first drive signal, a second folded double cascode stage configured to receive the differential input signal at a second pair of input transistors and generate a second drive signal, and an output stage. The output stage includes a PMOS common-source output transistor configured to receive the first drive signal at its gate, and an NMOS common-source output transistor configured to receive the first drive signal at its gate, the PMOS common-source output transistor and NMOS common-source output transistor being jointly configured to generate an output signal based on the first drive signal and the second drive signal.
    Type: Application
    Filed: January 30, 2024
    Publication date: August 29, 2024
    Inventor: Stewart S. Taylor
  • Publication number: 20230395037
    Abstract: A system, circuit, and method for implementing a low power common electrode voltage for a display (e.g., LcoS display) having transistors with low to moderate breakdown voltages may include a first and a second low voltage amplifier, wherein the first amplifier generates a pixel voltage and the second amplifier generates a predetermined voltage. The circuit may include a common electrode circuit coupled to the first and second amplifier to generate a common electrode voltage. Particularly, the circuit may include a control circuit coupled to the common electrode circuit, wherein, during a first phase, the control circuit selectively controls the common electrode circuit to generate a low common electrode voltage based upon a negative value of the predetermined voltage. Further, during a second phase, the control circuit selectively controls the common electrode circuit to generate a high common electrode voltage based upon the sum of the predetermined voltage and the pixel voltage.
    Type: Application
    Filed: August 16, 2023
    Publication date: December 7, 2023
    Inventor: Stewart S. Taylor
  • Publication number: 20230377532
    Abstract: Systems and methods for a digital pixel circuit for liquid crystal displays are provided. The design includes a dual-voltage pixel design, a two-transistor level-shift circuit design, self-adjusting transistor bias circuitry; and an optional on-chip test-array to determine die-specific design-center values for critical transistor leakage and threshold parameters. Level shift design simplicity, small pixel pitch, and applicability for small display applications such as microdisplays, are among the various benefits and advantages obtained.
    Type: Application
    Filed: December 10, 2020
    Publication date: November 23, 2023
    Inventors: James L. Sanford, Howard V. Goetz, Stewart S. Taylor
  • Patent number: 11776501
    Abstract: A system, circuit, and method for implementing a low power common electrode voltage for a display (e.g., LcoS display) having transistors with low to moderate breakdown voltages may include a first and a second low voltage amplifier, wherein the first amplifier generates a pixel voltage and the second amplifier generates a predetermined voltage. The circuit may include a common electrode circuit coupled to the first and second amplifier to generate a common electrode voltage. Particularly, the circuit may include a control circuit coupled to the common electrode circuit, wherein, during a first phase, the control circuit selectively controls the common electrode circuit to generate a low common electrode voltage based upon a negative value of the predetermined voltage. Further, during a second phase, the control circuit selectively controls the common electrode circuit to generate a high common electrode voltage based upon the sum of the predetermined voltage and the pixel voltage.
    Type: Grant
    Filed: November 21, 2022
    Date of Patent: October 3, 2023
    Assignee: Snap Inc.
    Inventor: Stewart S. Taylor
  • Publication number: 20230079962
    Abstract: A system, circuit, and method for implementing a low power common electrode voltage for a display (e.g., LcoS display) having transistors with low to moderate breakdown voltages may include a first and a second low voltage amplifier, wherein the first amplifier generates a pixel voltage and the second amplifier generates a predetermined voltage. The circuit may include a common electrode circuit coupled to the first and second amplifier to generate a common electrode voltage. Particularly, the circuit may include a control circuit coupled to the common electrode circuit, wherein, during a first phase, the control circuit selectively controls the common electrode circuit to generate a low common electrode voltage based upon a negative value of the predetermined voltage. Further, during a second phase, the control circuit selectively controls the common electrode circuit to generate a high common electrode voltage based upon the sum of the predetermined voltage and the pixel voltage.
    Type: Application
    Filed: November 21, 2022
    Publication date: March 16, 2023
    Inventor: Stewart S. Taylor
  • Patent number: 11580927
    Abstract: A system, circuit, and method for implementing a low power common electrode voltage for a display (e.g., LCoS display) having transistors with low to moderate breakdown voltages may include a first and a second low voltage amplifier, wherein the first amplifier generates a pixel voltage and the second amplifier generates a predetermined voltage. The circuit may include a common electrode circuit coupled to the first and second amplifier to generate a common electrode voltage. Particularly, the circuit may include a control circuit coupled to the common electrode circuit, wherein, during a first phase, the control circuit selectively controls the common electrode circuit to generate a low common electrode voltage based upon a negative value of the predetermined voltage. Further, during a second phase, the control circuit selectively controls the common electrode circuit to generate a high common electrode voltage based upon the sum of the predetermined voltage and the pixel voltage.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: February 14, 2023
    Assignee: Snap Inc.
    Inventor: Stewart S. Taylor
  • Publication number: 20220044651
    Abstract: A system, circuit, and method for implementing a low power common electrode voltage for a display (e.g., LCoS display) having transistors with low to moderate breakdown voltages may include a first and a second low voltage amplifier, wherein the first amplifier generates a pixel voltage and the second amplifier generates a predetermined voltage. The circuit may include a common electrode circuit coupled to the first and second amplifier to generate a common electrode voltage. Particularly, the circuit may include a control circuit coupled to the common electrode circuit, wherein, during a first phase, the control circuit selectively controls the common electrode circuit to generate a low common electrode voltage based upon a negative value of the predetermined voltage. Further, during a second phase, the control circuit selectively controls the common electrode circuit to generate a high common electrode voltage based upon the sum of the predetermined voltage and the pixel voltage.
    Type: Application
    Filed: July 1, 2020
    Publication date: February 10, 2022
    Inventor: Stewart S. Taylor
  • Publication number: 20140206301
    Abstract: Disclosed is an apparatus including a transmitter amplifier having an output terminal communicatively coupled to a transmission line to output a first set of radio frequency (RF) signals to an antenna. The apparatus may include a receiver amplifier having an input terminal communicatively coupled to the transmission line to receive a second set of RF signals from the antenna. The apparatus may include a passive network coupled between the transmitter amplifier and the receiver amplifier, the passive network being configurable to cancel either a first reactance of a parasitic capacitance of the transmitter amplifier or second reactance of a parasitic capacitance of the receiver amplifier. The apparatus may also include a switch coupled between the input terminal and a voltage reference to selectively configure the passive network to cancel either the first reactance or the second reactance. Other embodiments may be described and claimed.
    Type: Application
    Filed: March 27, 2012
    Publication date: July 24, 2014
    Inventors: Hemasundar Mohan Geddada, Hongtao Xu, Chang-Tsung Fu, Stewart S. Taylor
  • Patent number: 8112055
    Abstract: Embodiments of apparatuses, articles, methods, and systems for calibrating receive chain to reduce second order intermodulation distortion are disclosed herein. In some embodiments, a reference sensing chain is used to generate reference second-order intermodulation distortion signals that may be used to adjust a calibration code. In some embodiments, a calibration code may be adjusted using one or more feedback loops of a baseband amplifier. The embodiments may be employed, e.g., to manage power in wireless networks. Other embodiments and usages may be described and claimed.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: February 7, 2012
    Assignee: Intel Corporation
    Inventors: Xuebin Yang, Xu Zhang, Jingyi Ma, Stewart S. Taylor, Brent R. Carlton
  • Patent number: 8018288
    Abstract: Embodiments of a high-linearity low-noise amplifier (LNA) are generally described herein. Other embodiments may be described and claimed. In some embodiments, an RF input signal may be amplified with a cascode amplifier. The cascode amplifier may include integrated notch filters to attenuate undesired signals. The cascode amplifier may operate from a large power supply when blockers are present to avoid voltage swing compression at its output. The cascode amplifier may be biased and designed to operate in a class AB mode to produce linear output current to avoid current compression or excessive current expansion.
    Type: Grant
    Filed: April 13, 2009
    Date of Patent: September 13, 2011
    Assignee: Intel Corporation
    Inventors: Jon S. Duster, Stewart S. Taylor
  • Patent number: 7961056
    Abstract: Embodiments of the present invention include a low phase noise oscillator circuit using a current-reuse technique to reduce power consumption and improve phase noise, where the oscillator circuit comprises a first VCO coupled to a second VCO, and the outputs of the first and second VCOs are coupled with passive elements, such as capacitors. The overall power consumption of both the first and second VCOs is about the same as a single VCO. Furthermore, the phase noise is lowered by around 3 dB. Thus, the phase noise performance is improved without increasing the power consumption of the oscillator circuit.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: June 14, 2011
    Assignee: Intel Corporation
    Inventors: Stewart S. Taylor, Diptendu Ghosh
  • Publication number: 20110057732
    Abstract: Embodiments of the present invention include a low phase noise oscillator circuit using a current-reuse technique to reduce power consumption and improve phase noise, where the oscillator circuit comprises a first VCO coupled to a second VCO, and the outputs of the first and second VCOs are coupled with passive elements, such as capacitors. The overall power consumption of both the first and second VCOs is about the same as a single VCO. Furthermore, the phase noise is lowered by around 3 dB.
    Type: Application
    Filed: September 10, 2009
    Publication date: March 10, 2011
    Inventors: Stewart S. Taylor, Diptendu Ghosh
  • Patent number: 7848712
    Abstract: A wireless device includes high-performance CMOS RF switches that include serially connected transistors coupled between an input terminal and an output terminal, with an inductor coupled from the input to the output that resonates out the capacitance of the transistors to improve isolation. The transistors have a floating/bootstrapped body with remote body contacts.
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: December 7, 2010
    Assignee: Intel Corporation
    Inventors: Chang-Tsung Fu, Stewart S. Taylor
  • Publication number: 20100259331
    Abstract: Embodiments of a high-linearity low-noise amplifier (LNA) are generally described herein. Other embodiments may be described and claimed. In some embodiments, an RF input signal may be amplified with a cascode amplifier. The cascode amplifier may include integrated notch filters to attenuate undesired signals. The cascode amplifier may operate from a large power supply when blockers are present to avoid voltage swing compression at its output. The cascode amplifier may be biased and designed to operate in a class AB mode to produce linear output current to avoid current compression or excessive current expansion.
    Type: Application
    Filed: April 13, 2009
    Publication date: October 14, 2010
    Inventors: Jon S. Duster, Stewart S. Taylor
  • Patent number: 7750739
    Abstract: A dual reactive shunt feedback low noise amplifier design may include a transconductance amplifier having a capacitor coupled across it and a pair of coupled inductors coupled across it. In one embodiment, the coupled inductors may be laid out as two overlapping coils.
    Type: Grant
    Filed: July 19, 2007
    Date of Patent: July 6, 2010
    Assignee: Intel Corporation
    Inventors: Chang-Tsung Fu, Stewart S. Taylor
  • Patent number: 7676213
    Abstract: A gate-to-source voltage (Vgs) replication circuit includes a diode-connected NMOS transistor coupled to a current source to draw a drain-to-source current therethrough. The generated Vgs is imposed across a source-to-gate junction of a PMOS transistor. A second PMOS transistor is coupled in series with the first PMOS transistor such that the source-to-gate voltage (Vsg) of the second PMOS transistor replicates the Vgs of the NMOS circuit. The second PMOS transistor is coupled as a source follower to bias other NMOS transistors.
    Type: Grant
    Filed: December 22, 2006
    Date of Patent: March 9, 2010
    Inventors: Stewart S. Taylor, Jing-Hong C. Zhan
  • Patent number: 7653147
    Abstract: An apparatus for transmitter control is disclosed. The apparatus includes an analog circuit designed to operate on at least a portion of a communications signal to be wirelessly transmitted, based at least in part on a control signal. The apparatus includes a lookup table coupled to the analog circuit, with the lookup table designed to output the control signal based at least in part on the communications signal, or one or more measured metrics of the communications signal. Embodiments of the present invention include, but are not limited to, methods encompassing the operations described above, as well as subsystems and systems designed to operate in the above described manner.
    Type: Grant
    Filed: August 17, 2005
    Date of Patent: January 26, 2010
    Assignee: Intel Corporation
    Inventors: Georgios Palaskas, Stewart S. Taylor, Hasnain Lakdawala
  • Publication number: 20090325529
    Abstract: Embodiments of apparatuses, articles, methods, and systems for calibrating receive chain to reduce second order intermodulation distortion are disclosed herein. The embodiments may be employed, e.g., to manage power in wireless networks. Other embodiments and usages may be described and claimed.
    Type: Application
    Filed: June 26, 2008
    Publication date: December 31, 2009
    Inventors: Xuebin Yang, Xu (Sunny) Zhang, Jingyi Ma, Stewart S. Taylor, Brent R. Carlton