Patents by Inventor Patrick Lee Rakers

Patrick Lee Rakers 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: 6466126
    Abstract: A portable data device (400) having a power controller (430), a clock generator (428) and a digital circuit (432). The power controller (430) has an output signal. The output signal is representative of available power. The clock generator (428) is coupled to the output signal of the power controller (430) for generating a variable clock rate corresponding to the output signal. The digital circuit (432) is coupled to the clock generator (428), and the digital circuit (432) is controlled by the variable clock rate.
    Type: Grant
    Filed: January 19, 2001
    Date of Patent: October 15, 2002
    Assignee: Motorola, Inc.
    Inventors: Timothy James Collins, Patrick Lee Rakers
  • Patent number: 6134130
    Abstract: Power reception circuits employable in portable data devices (e.g., smart cards) to derive power and/or data from an input AC power signal (e.g., an ASK modulated carrier signal). In one embodiment, the power reception circuit comprises a power rectifier (120), a shunt rectifier (142) and a shunting element (132). The power rectifier (120) is adapted to rectify the input power signal, yielding a rectified output waveform. The shunt rectifier (142) is connected in parallel with the power rectifier (120). The shunting element (132) is connected to the shunt rectifier (142) and is operable to regulate an output voltage or current waveform produced at the output of the power rectifier (120). In another embodiment, the power reception circuit includes an analog circuit (610) for recovering data from a modulated carrier signal. A decoupling device (630) isolates the analog circuit (610) from impedance variations of a load. A shunt device (640) diverts undesired current from the load.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: October 17, 2000
    Assignee: Motorola, Inc.
    Inventors: Lawrence Edwin Connell, Patrick Lee Rakers, Timothy James Collins, Donald Bernard Lemersal, Jr.
  • Patent number: 5998978
    Abstract: A portable data device employs an integrated circuit having a signal processor that receives a power signal from an external source via a power node. A decoupling device is placed between the power node and the signal processor. An energy reservoir is placed in parallel with the signal processor, which acts in concert with the decoupling device to isolate the effects of the signal processor from the rest of the integrated circuit.
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: December 7, 1999
    Assignee: Motorola, Inc.
    Inventors: Lawrence Edwin Connell, Patrick Lee Rakers, Timothy James Collins, Donald Bernard Lemersal, Jr.