Patents by Inventor Robert B. Graybill

Robert B. Graybill 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).

  • Apparatus and methods for including codes in audio signals
    Patent number: 7961881
    Abstract: Apparatus and methods for including a code having at least one code frequency component in an audio signal are provided. The abilities of various frequency components in the audio signal to mask the code frequency component to human hearing are evaluated and based on these evaluations an amplitude is assigned to the code frequency component. Methods and apparatus for detecting a code in an encoded audio signal are also provided. A code frequency component in the encoded audio signal is detected based on an expected code amplitude or on a noise amplitude within a range of audio frequencies including the frequency of the code component.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: June 14, 2011
    Assignee: Arbitron Inc.
    Inventors: James M. Jensen, Wendell D. Lynch, Michael M. Perelshteyn, Robert B. Graybill, Sayed Hassan, Wayne Sabin
  • Apparatus and methods for including codes in audio signals
    Patent number: 6996237
    Abstract: Apparatus and methods for including a code having at least one code frequency component in an audio signal are provided. The abilities of various frequency components in the audio signal to mask the code frequency component to human hearing are evaluated and based on these evaluations an amplitude is assigned to the code frequency component. Methods and apparatus for detecting a code in an encoded audio signal are also provided. A code frequency component in the encoded audio signal is detected based on an expected code amplitude or on a noise amplitude within a range of audio frequencies including the frequency of the code component.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: February 7, 2006
    Assignee: Arbitron Inc.
    Inventors: James M. Jensen, Wendell D. Lynch, Michael M. Perelshteyn, Robert B. Graybill, Sayed Hassan, Wayne Sabin
  • Apparatus and methods for including codes in audio signals
    Publication number: 20030081781
    Abstract: Apparatus and methods for including a code having at least one code frequency component in an audio signal are provided. The abilities of various frequency components in the audio signal to mask the code frequency component to human hearing are evaluated and based on these evaluations an amplitude is assigned to the code frequency component. Methods and apparatus for detecting a code in an encoded audio signal are also provided. A code frequency component in the encoded audio signal is detected based on an expected code amplitude or on a noise amplitude within a range of audio frequencies including the frequency of the code component.
    Type: Application
    Filed: July 12, 2002
    Publication date: May 1, 2003
    Inventors: James M. Jensen, Wendell D. Lynch, Michael M. Perelshteyn, Robert B. Graybill, Sayed Hassan, Wayne Sabin
  • Apparatus and methods for including codes in audio signals
    Patent number: 6421445
    Abstract: Apparatus and methods for including a code having at least one code frequency component in an audio signal are provided. The abilities of various frequency components in the audio signal to mask the code frequency component to human hearing are evaluated and based on these evaluations an amplitude is assigned to the code frequency component. Methods and apparatus for detecting a code in an encoded audio signal are also provided. A code frequency component in the encoded audio signal is detected based on an expected code amplitude or on a noise amplitude within a range of audio frequencies including the frequency of the code component.
    Type: Grant
    Filed: June 8, 1998
    Date of Patent: July 16, 2002
    Assignee: Arbitron Inc.
    Inventors: James M. Jensen, Wendell D. Lynch, Michael M. Perelshteyn, Robert B. Graybill, Sayed Hassan, Wayne Sabin
  • Apparatus and methods for including codes in audio signals and decoding
    Patent number: 5764763
    Abstract: Apparatus and methods for including a code having at least one code frequency component in an audio signal are provided. The abilities of various frequency components in the audio signal to mask the code frequency component to human hearing are evaluated and based on these evaluations an amplitude is assigned to the code frequency component. Methods and apparatus for detecting a code in an encoded audio signal are also provided. A code frequency component in the encoded audio signal is detected based on an expected code amplitude or on a noise amplitude within a range of audio frequencies including the frequency of the code component.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: June 9, 1998
    Inventors: James M. Jensen, Wendell D. Lynch, Michael M. Perelshteyn, Robert B. Graybill, Sayed Hassan, Wayne Sabin
  • Apparatus and methods for including codes in audio signals and decoding
    Patent number: 5450490
    Abstract: Apparatus and methods for including a code having at least one code frequency component in an audio signal are provided. The abilities of various frequency components in the audio signal to mask the code frequency component to human hearing are evaluated and based on these evaluations an amplitude is assigned to the code frequency component. Methods and apparatus for detecting a code in an encoded audio signal are also provided. A code frequency component in the encoded audio signal is detected based on an expected code amplitude or on a noise amplitude within a range of audio frequencies including the frequency of the code component.
    Type: Grant
    Filed: March 31, 1994
    Date of Patent: September 12, 1995
    Assignee: The Arbitron Company
    Inventors: James M. Jensen, Robert B. Graybill, Sayed Hassan, Wendell D. Lynch, Wayne Sabin
  • Parallel bit serial data processor
    Patent number: 5179714
    Abstract: A single instruction multiple data systolic array processor having provision for local address generation, direct access to external devices, and programmable cell interconnectivity for providing great versatility while at the same time retaining the advantages of the SIMD architecture.
    Type: Grant
    Filed: October 7, 1988
    Date of Patent: January 12, 1993
    Assignee: Martin Marietta Corporation
    Inventor: Robert B. Graybill