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3-D cursor control system

  • US 20070115252A1
  • Filed: 01/27/2005
  • Published: 05/24/2007
  • Est. Priority Date: 01/30/2004
  • Status: Abandoned Application
First Claim
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1. A cursor control system comprising:

  • a handheld remote control unit (100) having means for transmitting control signals to a controlled device (32), said handheld remote control unit (100) further having means for transmitting (102) an ultrasonic position signal;

    receiving means for receiving said control signals and for applying said received control signals to said controlled device (32) for controlling various functions of said controlled device (32);

    an ultrasonic sensor array (106a, 106b, 106c) for receiving said ultrasonic position signal; and

    means (108, 110, 112), coupled to said ultrasonic sensor array (106a, 106b, 106c), for detecting movements of said handheld remote control unit (100) and for applying cursor position signals to said controlled device (32) for moving a cursor on a display (116) of said control device (32) correspondingly to said movements of said handheld remote control unit (100), the movement of the cursor in relation to the detected movement of the handheld remote control unit (100) being at a predetermined ratio, wherein said means (108, 110, 112)) for detecting movements of said handheld remote control unit (100) comprises means (114) for modifying a sensitivity of said ultrasonic sensor array (106a, 106b, 106c) such that said predetermined ratio remains constant, whereby movements of the handheld remote control unit (100) when relatively distant from the controlled device (32) result in the same movement of the cursor as when the handheld remote control unit (100) is similarly moved when relatively close to the controlled device (32).

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