Patents by Inventor Robert D. RAND

Robert D. RAND 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).

  • ECHO CANCELLATION
    Publication number: 20250233944
    Abstract: In an example, an audio system, which may comprise an integrated circuit, comprises an amplifier and a combiner. The amplifier is configured to output a first amplified audio signal to a speaker. The combiner is configured to: receive the first amplified audio signal from the amplifier, receive a second audio signal, combine the first amplified audio signal and second audio signal into a combined signal, and output the combined signal.
    Type: Application
    Filed: April 4, 2025
    Publication date: July 17, 2025
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Robert D. RAND, Jon E. EKLUND, Pradeep SAMINATHAN, Peter HORSFALL
  • Echo cancellation
    Patent number: 12301769
    Abstract: In an example, an audio system, which may comprise an integrated circuit, comprises an amplifier and a combiner. The amplifier is configured to output a first amplified audio signal to a speaker. The combiner is configured to: receive the first amplified audio signal from the amplifier, receive a second audio signal, combine the first amplified audio signal and second audio signal into a combined signal, and output the combined signal.
    Type: Grant
    Filed: December 1, 2022
    Date of Patent: May 13, 2025
    Assignee: Cirrus Logic Inc.
    Inventors: Robert D. Rand, Jon E. Eklund, Pradeep Saminathan, Peter Horsfall
  • ECHO CANCELLATION
    Publication number: 20230199122
    Abstract: In an example, an audio system, which may comprise an integrated circuit, comprises an amplifier and a combiner. The amplifier is configured to output a first amplified audio signal to a speaker. The combiner is configured to: receive the first amplified audio signal from the amplifier, receive a second audio signal, combine the first amplified audio signal and second audio signal into a combined signal, and output the combined signal.
    Type: Application
    Filed: December 1, 2022
    Publication date: June 22, 2023
    Applicant: Cirrus Logic International Semiconductor Ltd.
    Inventors: Robert D. RAND, Jon E. EKLUND, Pradeep SAMINATHAN, Peter HORSFALL