Patents by Inventor Dmitry Shifrin

Dmitry Shifrin 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: 10701657
    Abstract: Described herein are systems, methods, and apparatuses for time synchronization for nodes in a wireless personal area network (WPAN). A first message can be received, via an advertising channel, from an advertising node of a WPAN, the first message comprising an advertising message and a message identifier. A second message can be received from a timekeeper node of the WPAN, the second message comprising the message identifier of the first message and timestamp information identifying a time the second message was received by the timekeeper node. A time offset value can be calculated for a clock circuitry with respect to the advertising node, the time offset value comprising a difference between a time the first message was received by the receiver circuitry and the timestamp information of the second message. The clock circuitry can be adjusted based, at least in part, on the time offset value.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: June 30, 2020
    Assignee: Apple Inc.
    Inventors: Ilya V. Klotchkov, Dmitry Shifrin
  • Publication number: 20180124731
    Abstract: Described herein are systems, methods, and apparatuses for time synchronization for nodes in a wireless personal area network (WPAN). A first message can be received, via an advertising channel, from an advertising node of a WPAN, the first message comprising an advertising message and a message identifier. A second message can be received from a timekeeper node of the WPAN, the second message comprising the message identifier of the first message and timestamp information identifying a time the second message was received by the timekeeper node. A time offset value can be calculated for a clock circuitry with respect to the advertising node, the time offset value comprising a difference between a time the first message was received by the receiver circuitry and the timestamp information of the second message. The clock circuitry can be adjusted based, at least in part, on the time offset value.
    Type: Application
    Filed: June 24, 2015
    Publication date: May 3, 2018
    Inventors: Ilya V. Klotchkov, Dmitry Shifrin