Patents by Inventor Andrzej Ziolkowski

Andrzej Ziolkowski 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).

  • Circuit arrangement comprising a power supply unit
    Patent number: 7141895
    Abstract: The circuit arrangement comprises a power supply unit with a first power supply only for the analogue signal processing part and for the control part of a respective device. For the digital signal processing part, a second, separate switched mode power supply is provided, which is switched off, when only the analogue signal processing part is active, and which is in operation, when the digital signal processing part is on. For switching on and off of the second switched mode power supply, the power supply comprises a switching circuit (18), which is coupled in a special embodiment to a control loop (15) on the secondary side, for switching off the second power supply at the primary side via a galvanic isolating means (14). The switching circuit is provided with a supply voltage (12VS) from the first power supply and receives the on/off command from the control part, e. g. a microprocessor.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: November 28, 2006
    Assignee: Thomson Licensing
    Inventors: Frank Dumont, Andrzej Ziolkowski, Jean Paul Louvel
  • Circuit arrangement comprising a power supply unit
    Publication number: 20040046457
    Abstract: The circuit arrangement comprises a power supply unit with a first power supply only for the analogue signal processing part and for the control part of a respective device. For the digital signal processing part, a second, separate switched mode power supply is provided, which is switched off, when only the analogue signal processing part is active, and which is in operation, when the digital signal processing part is on. For switching on and off of the second switched mode power supply, the power supply comprises a switching circuit (18), which is coupled in a special embodiment to a control loop (15) on the secondary side, for switching off the second power supply at the primary side via a galvanic isolating means (14). The switching circuit is provided with a supply voltage (12VS) from the first power supply and receives the on/off command from the control part, e. g. a microprocessor.
    Type: Application
    Filed: June 20, 2003
    Publication date: March 11, 2004
    Inventors: Frank Dumont, Andrzej Ziolkowski, Jean Paul Louvel