Patents by Inventor Donald J. MacLennan

Donald J. MacLennan 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).

  • Infrared detection apparatus
    Patent number: 4178522
    Abstract: In infrared detection and imaging systems circuits are provided for removing the high background thermal component of signal.
    Type: Grant
    Filed: March 15, 1978
    Date of Patent: December 11, 1979
    Assignee: General Electric Company
    Inventors: Donald J. MacLennan, Edwin E. Morris
  • Charge transfer filter
    Patent number: 4172983
    Abstract: A charge transfer filter utilizing charge transfer accumulator structures for exponential smoothing of analog signals is described. The charge transfer accumulator structures provide short equilibration times, long smoothing time constants, high data rates and low dark currents.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: October 30, 1979
    Assignee: General Electric Company
    Inventor: Donald J. MacLennan
  • Charge transfer memory apparatus
    Patent number: 4125785
    Abstract: An array of rows and columns of charge transfer stages are provided. Each of the stages have identical sets of four electrodes. In response to a first set of clocking voltages applied to the sets of four electrodes charge packets are transferred from stage to stage in the column direction. In response to a second set of clocking voltages applied to the sets of four electrodes charge packets are transferred from stage to stage in the row direction.
    Type: Grant
    Filed: February 16, 1978
    Date of Patent: November 14, 1978
    Assignee: General Electric Company
    Inventor: Donald J. MacLennan
  • Charge transfer memory apparatus
    Patent number: 4125786
    Abstract: An array of rows and columns of charge transfer stages are provided. Each of the stages have identical sets of four electrodes. In response to a first set of clocking voltages applied to the sets of four electrodes charge packets are transferred from stage to stage in the column direction. In response to a second set of clocking voltages applied to the sets of four electrodes charge packets are transferred from stage to stage in the row direction.
    Type: Grant
    Filed: August 19, 1977
    Date of Patent: November 14, 1978
    Assignee: General Electric Company
    Inventor: Donald J. MacLennan