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Method and device for timing offset in an optical gun interaction with a computer game system

  • US 20030199317A1
  • Filed: 05/08/2003
  • Published: 10/23/2003
  • Est. Priority Date: 09/06/2001
  • Status: Abandoned Application
First Claim
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1. A method of determining a time offset introduced by a digital television after receipt of video display information from a computer game system, the digital television having a video display and the video display signal having Vsync and Hsync information, the method consisting of:

  • a. providing an optical gun having a processor, a memory, a communications channel, and an optical sensor, i. the memory for use by the processor in capturing and analyzing data;

    ii. the communications channel for providing the video display information to the optical gun and providing bi-directional communications between the optical gun and the computer game system;

    iii. the optical sensor for detecting pixel brightening of an area of the video display;

    b. transmitting the video display information to the optical gun via the video display cable;

    c. pointing the optical sensor at the video display screen;

    d. detecting pixel brightening by the optical gun of the area of the video display screen;

    e. determining the time period between two brightness peaks detected by the optical sensor;

    f. deriving a phase angle shift value of the video display screen; and

    g. transmitting the phase angle shift value from the optical gun to the computer game system.

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