Patents by Inventor Douglas M. Farrar

Douglas M. Farrar 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).

  • Patent number: 9680980
    Abstract: Electronic devices and accessories such as headsets for electronic devices are provided. A microphone may be included in an accessory to capture sound for an associated electronic device. Buttons and other user interfaces may be included in the accessories. An accessory may have an audio plug that connects to a mating audio jack in an electronic device, thereby establishing a wired communications link between the accessory and the electronic device. The electronic device may include power supply circuitry for applying bias voltages to the accessory. The bias voltages may bias a microphone and may adjust settings in the accessory such as settings related to operating modes. User input information may be conveyed between the accessory and the electronic device using ultrasonic tone transmission. The electronic device may also gather input from the accessory using a voltage detector coupled to lines in the communications path.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: June 13, 2017
    Assignee: Apple Inc.
    Inventors: Wendell B. Sander, Jeffrey J. Terlizzi, Douglas M. Farrar, Timothy Johnson, Brian Sander, Brian J. Conner, Jesse L. Dorogusker
  • Publication number: 20150208159
    Abstract: Electronic devices and accessories such as headsets for electronic devices are provided. A microphone may be included in an accessory to capture sound for an associated electronic device. Buttons and other user interfaces may be included in the accessories. An accessory may have an audio plug that connects to a mating audio jack in an electronic device, thereby establishing a wired communications link between the accessory and the electronic device. The electronic device may include power supply circuitry for applying bias voltages to the accessory. The bias voltages may bias a microphone and may adjust settings in the accessory such as settings related to operating modes. User input information may be conveyed between the accessory and the electronic device using ultrasonic tone transmission. The electronic device may also gather input from the accessory using a voltage detector coupled to lines in the communications path.
    Type: Application
    Filed: March 30, 2015
    Publication date: July 23, 2015
    Inventors: Wendell B. Sander, Jeffrey J. Terlizzi, Douglas M. Farrar, Timothy Johnson, Brian Sander, Brian J. Conner, Jesse L. Dorogusker
  • Patent number: 8995689
    Abstract: Electronic devices and accessories such as headsets for electronic devices are provided. A microphone may be included in an accessory to capture sound for an associated electronic device. Buttons and other user interfaces may be included in the accessories. An accessory may have an audio plug that connects to a mating audio jack in an electronic device, thereby establishing a wired communications link between the accessory and the electronic device. The electronic device may include power supply circuitry for applying bias voltages to the accessory. The bias voltages may bias a microphone and may adjust settings in the accessory such as settings related to operating modes. User input information may be conveyed between the accessory and the electronic device using ultrasonic tone transmission. The electronic device may also gather input from the accessory using a voltage detector coupled to lines in the communications path.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: March 31, 2015
    Assignee: Apple Inc.
    Inventors: Wendell B. Sander, Jeffrey Terlizzi, Douglas M. Farrar, Timothy Johnson, Brian Sander, Brian J. Conner, Jesse L. Dorogusker
  • Patent number: 8983093
    Abstract: Electronic devices and accessories such as headsets for electronic devices are provided. A microphone may be included in an accessory to capture sound for an associated electronic device. Buttons and other user interfaces may be included in the accessories. An accessory may have an audio plug that connects to a mating audio jack in an electronic device, thereby establishing a wired communications link between the accessory and the electronic device. The electronic device may include power supply circuitry for applying bias voltages to the accessory. The bias voltages may bias a microphone and may adjust settings in the accessory such as settings related to operating modes. User input information may be conveyed between the accessory and the electronic device using ultrasonic tone transmission. The electronic device may also gather input from the accessory using a voltage detector coupled to lines in the communications path.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: March 17, 2015
    Assignee: Apple Inc.
    Inventors: Wendell B. Sander, Jeffrey Terlizzi, Douglas M. Farrar, Timothy Johnson, Brian Sander, Brian J. Conner, Jesse L. Dorogusker
  • Patent number: 8976976
    Abstract: Electronic devices and accessories such as headsets for electronic devices are provided. A microphone may be included in an accessory to capture sound for an associated electronic device. Buttons and other user interfaces may be included in the accessories. An accessory may have an audio plug that connects to a mating audio jack in an electronic device, thereby establishing a wired communications link between the accessory and the electronic device. The electronic device may include power supply circuitry for applying bias voltages to the accessory. The bias voltages may bias a microphone and may adjust settings in the accessory such as settings related to operating modes. User input information may be conveyed between the accessory and the electronic device using ultrasonic tone transmission. The electronic device may also gather input from the accessory using a voltage detector coupled to lines in the communications path.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: March 10, 2015
    Assignee: Apple Inc.
    Inventors: Wendell B. Sander, Jeffrey Terlizzi, Douglas M. Farrar, Timothy Johnson, Brian Sander, Brian J. Conner, Jesse L. Dorogusker
  • Patent number: 8891790
    Abstract: Electronic devices and accessories such as headsets for electronic devices are provided. A microphone may be included in an accessory to capture sound for an associated electronic device. Buttons and other user interfaces may be included in the accessories. An accessory may have an audio plug that connects to a mating audio jack in an electronic device, thereby establishing a wired communications link between the accessory and the electronic device. The electronic device may include power supply circuitry for applying bias voltages to the accessory. The bias voltages may bias a microphone and may adjust settings in the accessory such as settings related to operating modes. User input information may be conveyed between the accessory and the electronic device using ultrasonic tone transmission. The electronic device may also gather input from the accessory using a voltage detector coupled to lines in the communications path.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: November 18, 2014
    Assignee: Apple Inc.
    Inventors: Wendell B. Sander, Jeffrey Terlizzi, Douglas M. Farrar, Timothy Johnson, Brian Sander, Brian J. Conner, Jesse L. Dorogusker
  • Patent number: 8600080
    Abstract: Electronic devices and accessories such as headsets for electronic devices are provided. A microphone may be included in an accessory to capture sound for an associated electronic device. Buttons and other user interfaces may be included in the accessories. An accessory may have an audio plug that connects to a mating audio jack in an electronic device, thereby establishing a wired communications link between the accessory and the electronic device. The electronic device may include power supply circuitry for applying bias voltages to the accessory. The bias voltages may bias a microphone and may adjust settings in the accessory such as settings related to operating modes. User input information may be conveyed between the accessory and the electronic device using ultrasonic tone transmission. The electronic device may also gather input from the accessory using a voltage detector coupled to lines in the communications path.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: December 3, 2013
    Assignee: Apple Inc.
    Inventors: Wendell B. Sander, Jeffrey Terlizzi, Douglas M. Farrar, Timothy Johnson, Brian Sander, Brian J. Conner, Jesse L. Dorogusker
  • Patent number: 8369534
    Abstract: An audio host device has an electrical interface having a speaker contact, a microphone contact, and a reference contact. The reference contact is shared by a microphone and a speaker. The reference contact is also directly coupled to a power return plane of the audio host device. A difference amplifier is provided, having a cold input and a hot input. The hot input is coupled to the microphone contact. A switched attenuator circuit is also provided that has first and second states. In the first state, the attenuator circuit couples a sense point of the reference contact to the cold input, while in the second state the cold input is isolated from the reference sense point. Other embodiments are also described and claimed.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: February 5, 2013
    Assignee: Apple Inc.
    Inventors: Timothy M. Johnson, Lawrence F. Heyl, Wendell B. Sander, Douglas M. Farrar
  • Patent number: 8254592
    Abstract: Electronic devices and accessories such as headsets are provided. An accessory may include speakers and active noise cancellation circuitry. Microphones may be used to pick up ambient noise signals for implementing noise cancellation for the speakers. The accessory may also include a voice microphone and an ambient noise microphone that picks up ambient noise signals for implementing noise cancellation for the voice microphone. A user input interface may gather user input. Ultrasonic tone generators may transmit data between the device and accessory. The electronic device and accessory may be connected to each other by audio connectors. Hybrid circuits that each include a summer and a transconductance amplifier may be selectively switched into or out of use. When switched into use, paths between the device and accessory can support bidirectional communications such as communications involving the simultaneous flow of analog audio and microphone signals in opposite directions.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: August 28, 2012
    Assignee: Apple Inc.
    Inventors: Wendell B. Sander, Jeffrey Terlizzi, Douglas M. Farrar, Brian Sander
  • Publication number: 20120183159
    Abstract: An audio host device has an electrical interface having a speaker contact, a microphone contact, and a reference contact. The reference contact is shared by a microphone and a speaker. The reference contact is also directly coupled to a power return plane of the audio host device. A difference amplifier is provided, having a cold input and a hot input. The hot input is coupled to the microphone contact. A switched attenuator circuit is also provided that has first and second states. In the first state, the attenuator circuit couples a sense point of the reference contact to the cold input, while in the second state the cold input is isolated from the reference sense point. Other embodiments are also described and claimed.
    Type: Application
    Filed: March 28, 2012
    Publication date: July 19, 2012
    Applicant: Apple Inc
    Inventors: Timothy M. Johnson, Lawrence F. Heyl, Wendell B. Sander, Douglas M. Farrar
  • Patent number: 8150058
    Abstract: An audio host device has an electrical interface having a speaker contact, a microphone contact, and a reference contact. The reference contact is shared by a microphone and a speaker. The reference contact is also directly coupled to a power return plane of the audio host device. A difference amplifier is provided, having a cold input and a hot input. The hot input is coupled to the microphone contact. A switched attenuator circuit is also provided that has first and second states. In the first state, the attenuator circuit couples a sense point of the reference contact to the cold input, while in the second state the cold input is isolated from the reference sense point. Other embodiments are also described and claimed.
    Type: Grant
    Filed: August 4, 2009
    Date of Patent: April 3, 2012
    Assignee: Apple Inc.
    Inventors: Timothy M. Johnson, Lawrence F. Heyl, Wendell B. Sander, Douglas M. Farrar
  • Publication number: 20110033060
    Abstract: An audio host device has an electrical interface having a speaker contact, a microphone contact, and a reference contact. The reference contact is shared by a microphone and a speaker. The reference contact is also directly coupled to a power return plane of the audio host device. A difference amplifier is provided, having a cold input and a hot input. The hot input is coupled to the microphone contact. A switched attenuator circuit is also provided that has first and second states. In the first state, the attenuator circuit couples a sense point of the reference contact to the cold input, while in the second state the cold input is isolated from the reference sense point. Other embodiments are also described and claimed.
    Type: Application
    Filed: August 4, 2009
    Publication date: February 10, 2011
    Applicant: Apple Inc.
    Inventors: Timothy M. Johnson, Lawrence F. Heyl, Wendell B. Sander, Douglas M. Farrar
  • Patent number: 7869608
    Abstract: Electronic devices and accessories such as headsets for electronic devices are provided. A microphone may be included in an accessory to capture sound for an associated electronic device. Buttons and other user interfaces may be included in the accessories. An accessory may have an audio plug that connects to a mating audio jack in an electronic device, thereby establishing a wired communications link between the accessory and the electronic device. The electronic device may include power supply circuitry for applying bias voltages to the accessory. The bias voltages may bias a microphone and may adjust settings in the accessory such as settings related to operating modes. User input information may be conveyed between the accessory and the electronic device using ultrasonic tone transmission. The electronic device may also gather input from the accessory using a voltage detector coupled to lines in the communications path.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: January 11, 2011
    Assignee: Apple Inc.
    Inventors: Wendell B. Sander, Jeffrey Terlizzi, Douglas M. Farrar, Timothy Johnson, Brian Sander, Brian J. Conner, Jesse L. Dorogusker
  • Publication number: 20100260362
    Abstract: Electronic devices and accessories such as headsets are provided. An accessory may include speakers and active noise cancellation circuitry. Microphones may be used to pick up ambient noise signals for implementing noise cancellation for the speakers. The accessory may also include a voice microphone and an ambient noise microphone that picks up ambient noise signals for implementing noise cancellation for the voice microphone. A user input interface may gather user input. Ultrasonic tone generators may transmit data between the device and accessory. The electronic device and accessory may be connected to each other by audio connectors. Hybrid circuits that each include a summer and a transconductance amplifier may be selectively switched into or out of use. When switched into use, paths between the device and accessory can support bidirectional communications such as communications involving the simultaneous flow of analog audio and microphone signals in opposite directions.
    Type: Application
    Filed: June 9, 2009
    Publication date: October 14, 2010
    Inventors: Wendell B. Sander, Jeffrey Terlizzi, Douglas M. Farrar, Brian Sander
  • Patent number: 7769187
    Abstract: Hybrid circuits for electronic devices and accessories for electronic devices are provided. One or more pairs of hybrid circuits may convey audio signals, noise cancellation audio signals, microphone signals, control signals, and other signals between an electronic device and an accessory. The hybrid circuits may include a voltage controlled current source, a differential amplifier, separate signal and ground pins, multiple ground lines, an amplifier on a ground noise sense input line that can sense ground noise that may result from parasitic resistance, and other circuitry.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: August 3, 2010
    Assignee: Apple Inc.
    Inventors: Douglas M. Farrar, Wendell B. Sander
  • Patent number: 7627128
    Abstract: Electronic devices and accessories such as headsets for electronic devices are provided. A microphone may be included in an accessory to capture sound for an associated electronic device. Buttons and other user interfaces may be included in the accessories. An accessory may have an audio plug that connects to a mating audio jack in an electronic device, thereby establishing a wired communications link between the accessory and the electronic device. The electronic device may include power supply circuitry for applying bias voltages to the accessory. The bias voltages may bias a microphone and may adjust settings in the accessory such as settings related to operating modes. User input information may be conveyed between the accessory and the electronic device using ultrasonic tone transmission. The electronic device may also gather input from the accessory using a voltage detector coupled to lines in the communications path.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: December 1, 2009
    Assignee: Apple Inc.
    Inventors: Wendell B. Sander, Jeffrey Terlizzi, Douglas M. Farrar
  • Patent number: 7623667
    Abstract: Electronic devices and accessories such as headsets for electronic devices are provided. A microphone may be included in an accessory to capture sound for an associated electronic device. Buttons and other user interfaces may be included in the accessories. An accessory may have an audio plug that connects to a mating audio jack in an electronic device, thereby establishing a wired communications link between the accessory and the electronic device. The electronic device may include power supply circuitry for applying bias voltages to the accessory. The bias voltages may bias a microphone and may adjust settings in the accessory such as settings related to operating modes. User input information may be conveyed between the accessory and the electronic device using ultrasonic tone transmission. The electronic device may also gather input from the accessory using a voltage detector coupled to lines in the communications path.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: November 24, 2009
    Assignee: Apple Inc.
    Inventors: Wendell B. Sander, Jeffrey Terlizzi, Douglas M. Farrar, Timothy Johnson, Brian Sander, Brian J. Conner, Jesse L. Dorogusker
  • Publication number: 20090179768
    Abstract: Electronic devices and accessories such as headsets for electronic devices are provided. A microphone may be included in an accessory to capture sound for an associated electronic device. Buttons and other user interfaces may be included in the accessories. An accessory may have an audio plug that connects to a mating audio jack in an electronic device, thereby establishing a wired communications link between the accessory and the electronic device. The electronic device may include power supply circuitry for applying bias voltages to the accessory. The bias voltages may bias a microphone and may adjust settings in the accessory such as settings related to operating modes. User input information may be conveyed between the accessory and the electronic device using ultrasonic tone transmission. The electronic device may also gather input from the accessory using a voltage detector coupled to lines in the communications path.
    Type: Application
    Filed: September 3, 2008
    Publication date: July 16, 2009
    Inventors: Wendell B. Sander, Jeffrey Terlizzi, Douglas M. Farrar, Timothy Johnson, Brian Sander, Brian J. Conner, Jesse L. Dorogusker
  • Publication number: 20090180353
    Abstract: Electronic devices and accessories such as headsets for electronic devices are provided. A microphone may be included in an accessory to capture sound for an associated electronic device. Buttons and other user interfaces may be included in the accessories. An accessory may have an audio plug that connects to a mating audio jack in an electronic device, thereby establishing a wired communications link between the accessory and the electronic device. The electronic device may include power supply circuitry for applying bias voltages to the accessory. The bias voltages may bias a microphone and may adjust settings in the accessory such as settings related to operating modes. User input information may be conveyed between the accessory and the electronic device using ultrasonic tone transmission. The electronic device may also gather input from the accessory using a voltage detector coupled to lines in the communications path.
    Type: Application
    Filed: September 3, 2008
    Publication date: July 16, 2009
    Inventors: Wendell B. Sander, Jeffrey Terlizzi, Douglas M. Farrar, Timothy Johnson, Brian Sander, Brian J. Conner, Jesse L. Dorogusker
  • Publication number: 20090180629
    Abstract: Electronic devices and accessories such as headsets for electronic devices are provided. A microphone may be included in an accessory to capture sound for an associated electronic device. Buttons and other user interfaces may be included in the accessories. An accessory may have an audio plug that connects to a mating audio jack in an electronic device, thereby establishing a wired communications link between the accessory and the electronic device. The electronic device may include power supply circuitry for applying bias voltages to the accessory. The bias voltages may bias a microphone and may adjust settings in the accessory such as settings related to operating modes. User input information may be conveyed between the accessory and the electronic device using ultrasonic tone transmission. The electronic device may also gather input from the accessory using a voltage detector coupled to lines in the communications path.
    Type: Application
    Filed: September 3, 2008
    Publication date: July 16, 2009
    Inventors: Wendell B. Sander, Jeffrey Terlizzi, Douglas M. Farrar