Patents by Inventor Aleksandar Zhelyazkov

Aleksandar Zhelyazkov 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).

  • Multilevel timestamp detection circuit and method
    Patent number: 8504326
    Abstract: Disclosed are methods and circuits for detecting and recording timestamps for multiple events (222/322, 224/324) using a single input pin (252, 352) on a real time clock (RTC) (250, 350). Signals associated with each of the events are modulated to create a multiple level composite signal (240). The RTC includes a multiple signal level detection circuit to distinguish from among the various signal levels so that each event can be separately flagged and timestamped. For example, the opening of two or more covers (112, 114) on the housing (110) of an electronic device (100) can be monitored, distinguished, and separately flagged using a single RTC input port.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: August 6, 2013
    Assignee: NXP B.V.
    Inventors: Giovanni Genna, Aleksandar Zhelyazkov, Markus Hintermann
  • MULTILEVEL TIMESTAMP DETECTION CIRCUIT AND METHOD
    Publication number: 20100198558
    Abstract: Disclosed are methods and circuits for detecting and recording timestamps for multiple events (222/322, 224/324) using a single input pin (252, 352) on a real time clock (RTC) (250, 350). Signals associated with each of the events are modulated to create a multiple level composite signal (240). The RTC includes a multiple signal level detection circuit to distinguish from among the various signal levels so that each event can be separately flagged and timestamped. For example, the opening of two or more covers (112, 114) on the housing (110) of an electronic device (100) can be monitored, distinguished, and separately flagged using a single RTC input port.
    Type: Application
    Filed: October 1, 2008
    Publication date: August 5, 2010
    Applicant: NXP B.V.
    Inventors: Giovanni Genna, Aleksandar Zhelyazkov, Markus Hintermann