Patents by Inventor Randall S. Fraser

Randall S. Fraser 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: 7268799
    Abstract: Wireless communications devices, such as cellular telephones (100), include an integrated camera (202) and process image data captured by that camera (202) to determine desired device illumination levels. A controller (410) within the wireless communications device (100) causes an image to be captured by the integrated camera (202). The captured image data is processed to determine approximate ambient light levels. A level of device illumination, such as provided by a display backlight (416) and a keypad backlight (418) is controlled based upon the approximate ambient light levels.
    Type: Grant
    Filed: December 3, 2004
    Date of Patent: September 11, 2007
    Assignee: Motorola, Inc.
    Inventors: Joseph Patino, Randall S. Fraser, Alexander Rodriguez
  • Patent number: 7202635
    Abstract: The invention concerns a method (200) and a system (100) for charging a battery (112). The method includes the steps of determining (214) a charge termination point for the battery, in which the charge termination point produces a charge on the battery that is less than an initial maximum charging capacity of the battery, and charging (224) the battery using the charge termination point for at least a portion of the charge cycles of the battery. The method reduces at least in part the variation of battery capacity over the cycle life of the battery.
    Type: Grant
    Filed: March 10, 2004
    Date of Patent: April 10, 2007
    Assignee: Motorola, Inc.
    Inventors: Joseph Patino, Randall S. Fraser
  • Patent number: 6980912
    Abstract: An apparatus (10) having a portable power source (11) can make use of a plurality of differing charge depleted threshold values (and, in a preferred embodiment, corresponding visual charge-remaining indicators) to determine what level of charge remains in the portable power source (11). This in turn permits the recharging advice as suggested by the visual indicator to better track and reinforce the ordinary recharging behaviors of a given user. So configured, the total lifetime of the portable power source may be extended while also ensuring that the portable power source will be fully charged upon completion of each charging cycle.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: December 27, 2005
    Assignee: Motorola, Inc.
    Inventors: Joseph Patino, Randall S. Fraser
  • Patent number: 6972542
    Abstract: A system for verification of a battery (100) includes the battery (100) and a device (400,500). The battery (100) includes a memory device (135) for storing an identification number and a verification number. The verification number is generated by applying a key to the identification number. The device (400,500) is coupled to the battery (100) and includes a device memory (515) for storing the key and a microprocessor (435,510) for verifying the identification number of the battery (100) by applying the key to the verification number.
    Type: Grant
    Filed: August 11, 2003
    Date of Patent: December 6, 2005
    Assignee: Motorola, Inc.
    Inventors: Joseph Patino, Andrew F. Burton, Randall S. Fraser
  • Patent number: 5564094
    Abstract: A radio receiver (10) comprises a plurality of stages and means for selectively adjusting the stages (16, 18, and 22), as a function of the received signal strength to reduce intermodulation distortion. In still another aspect of the invention, a receiver determines the signal strength of a received signal and uses this information to selectively control stages of the receiver in order to reduce the receiver's current drain.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 8, 1996
    Assignee: Motorola, Inc.
    Inventors: George C. Anderson, Charles R. Ruelke, Randall S. Fraser
  • Patent number: 5216392
    Abstract: A crystal filter network comprises at least one variable impedance network (103a, 103b), at least one crystal filter (103c), and a control circuit (110). Each variable impedance network (103a, 103b) has a control terminal, a first terminal (37, 39), and a second terminal (38, 40) for connecting a first impedance (113) coupled to the first terminal (37), to a second impedance coupled to the second terminal (38). The crystal filter (103c) is coupled to at least one of the first and second terminals. Coupled to the control terminal, the control circuit (110) electrically varies (V.sub.1 and V.sub.2) the variable impedance network (103a, 103b) to provide a predetermined impedance characteristic to the crystal filter network (103c).
    Type: Grant
    Filed: July 5, 1991
    Date of Patent: June 1, 1993
    Assignee: Motorola, Inc.
    Inventors: Randall S. Fraser, Tam-Thanh C. Buu, Charles R. Ruelke