Patents by Inventor Raymond B. Chadwick

Raymond B. Chadwick 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).

  • System for testing signal transmission/reception apparatus
    Patent number: 6005891
    Abstract: The system operates with a signal transmission/reception apparatus such as a receive antenna, or a coaxial system or the like, while the antenna is receiving information signals and it operates by injecting a low power pseudo-noise digital signal into the antenna and detecting reflected energy, the magnitude of which depends on the condition of the antenna. The reflected signal is processed and compared with the original test signal to produce a digital number representing the condition of the antenna. The digital number is compared with a table of numbers in a processor to determine the condition of the antenna.
    Type: Grant
    Filed: August 13, 1996
    Date of Patent: December 21, 1999
    Inventors: Raymond B. Chadwick, James Bush, Timothy Przygoda, Boris Sheyer, Christopher Symanski, Gary Schober
  • System and method for identifying a television program
    Patent number: 5404160
    Abstract: The disclosure is of a system and method of detecting or identifying a received TV program by forming a database of identifying digital bits for a plurality of programs, processing a TV program by modulating the luminance of pairs of lines of the program and reconstituting the program with said modulated line pairs and the other components of a TV program signal. The reconstituted program is transmitted to a location at which it is decoded to recover the digital identifying bits and comparing such bits with bits in the database to identify the transmitted program.
    Type: Grant
    Filed: June 24, 1993
    Date of Patent: April 4, 1995
    Assignee: Berkeley Varitronics Systems, Inc.
    Inventors: Gary W. Schober, Raymond B. Chadwick, Francis R. Ashley
  • Communications system
    Patent number: 5231646
    Abstract: A communication system comprising a plurality of transceivers each being connected to selected ones of data inputs and at least one unidirectional antenna, each of the transceivers having a first transmitter coupled to the unidirectional antenna transmitting first signals at a first frequency to others of the plurality of transceivers according to a predetermined protocol and a first receiver coupled to the unidirectional antenna receiving second signals at a second frequency from others of the plurality of transceivers according to the predetermined protocol, the first and second frequencies being different; and a relay having an omnidirectional antenna in focused communication with the unidirectional antennas of the plurality of transceivers, a second receiver coupled to the omnidirectional antenna to receive the first signals according to the predetermined protocol and a second transmitter coupled to the second receiver and the omnidirectional antenna to convert the first signals to the second signals and
    Type: Grant
    Filed: March 16, 1992
    Date of Patent: July 27, 1993
    Assignee: Kyros Corporation
    Inventors: William A. Heath, Keith A. Mayers, Raymond B. Chadwick