Patents by Inventor Roy Greeff

Roy Greeff 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).

  • Method of communications in a backscatter system, interrogator, and backscatter communications system
    Patent number: 6229987
    Abstract: An interrogator for use in a backscatter system, the interrogator comprising an antenna configured to receive a backscatter signal; an IQ downconverter coupled to the antenna and configured to downconvert the backscatter signal to produce I and Q signals; a combiner coupled to the IQ downconverter and configured to combine the I and Q signals to produce a combined signal; and an analog to digital converter coupled to the combiner and configured to convert the combined signal to a digital signal. A method of communications in a backscatter system, the method comprising receiving a backscatter signal; downconverting the backscatter signal with an IQ downconverter to produce I and Q signals; combining the I and Q signals to produce a combined signal; and converting the combined signal to a digital signal.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: May 8, 2001
    Assignee: Micron Technology, Inc.
    Inventors: Roy Greeff, David K. Ovard
  • Backscatter communication systems, interrogators, methods of communicating in a backscatter system, and backscatter communication methods
    Patent number: 6192222
    Abstract: The present invention includes backscatter communication systems, interrogators, methods of communicating in a backscatter system, and backscatter communication methods. According to one aspect of the present invention, a backscatter communication system includes an interrogator including a transmitter configured to output a forward link communication and a receiver configured to receive a return link communication having a carrier signal, the receiver being configured to reduce the amplitude of the carrier signal of the return link communication; and a communication device configured to modulate the carrier signal to communicate the return link communication responsive to reception of the forward link communication.
    Type: Grant
    Filed: September 3, 1998
    Date of Patent: February 20, 2001
    Assignee: Micron Technology, Inc.
    Inventors: Roy Greeff, David K. Ovard
  • Method of communications in a backscatter system, interrogator, and backscatter communications system
    Patent number: 6169474
    Abstract: A method of communications in a backscatter system, the method comprising transmitting a command at a first power level; and transmitting a continuous wave for a backscatter reply, the continuous wave being transmitted at a second power level different from the first power level. An interrogator for use in a backscatter system, the interrogator comprising a transmitter configured to transmit a command at a first power level and to transmit a continuous wave for a backscatter reply, the transmitter being configured to transmit the continuous wave at a second power level different from the first power level.
    Type: Grant
    Filed: April 23, 1998
    Date of Patent: January 2, 2001
    Assignee: Micron Technology, Inc.
    Inventors: Roy Greeff, David Ovard
  • Method of communications in a backscatter system, interrogator, and backscatter communications system
    Patent number: 6075973
    Abstract: An interrogator for use in a backscatter system, the interrogator comprising an antenna configured to receive a backscatter signal; an IQ downconverter coupled to the antenna and configured to downconvert the backscatter signal to produce I and Q signals; a combiner coupled to the IQ downconverter and configured to combine the I and Q signals to produce a combined signal; and an analog to digital converter coupled to the combiner and configured to convert the combined signal to a digital signal. A method of communications in a backscatter system, the method comprising receiving a backscatter signal; downconverting the backscatter signal with an IQ downconverter to produce I and Q signals; combining the I and Q signals to produce a combined signal; and converting the combined signal to a digital signal.
    Type: Grant
    Filed: May 18, 1998
    Date of Patent: June 13, 2000
    Assignee: Micron Technology, Inc.
    Inventors: Roy Greeff, David K. Ovard