Position transducer system for a joystick
March 19, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3621214 3891918 Transducer for directly converting mechanical displacement to phase information Pulse width modulator digital servo system System with joystick to control velocity vector of a display cursor Electronic system for determining blood sedimentation rate using a continually retuned resonant circuit Digital position transducer including variable tuning element oscillator 360 Degree linear variable phase transformer Electronic two directional control apparatus Joy-stick controller Patent #: 4306208 InventorAssigneeApplicationNo. 06/713482 filed on 03/19/1985US Classes:700/85, Positional (e.g., joystick)336/131, Plural coils with plural cores336/136, Telescoping magnetic body and coil345/161, Joystick463/38Pivotally-translatable handle (e.g., joystick, etc.)ExaminersPrimary: Pinkham, Richard C.Assistant: Lastova, MaryAnn Stoll Attorney, Agent or FirmInternational ClassesG05G 9/00 (20060101)G06F 3/033 (20060101) G05G 9/047 (20060101) A63F 13/06 (20060101) A63F 13/02 (20060101) G01D 5/12 (20060101) G01D 5/20 (20060101) AbstractA joystick position transducer system for use in a video game. The joystick position transducer includes a pair of inductors each having a movable slug, the slugs being coupled to a control handle or knob by means of respective linkages. The control handle or knob is responsive to external stimulus to move the slugs, the inductors providing respective first and second analog signals which are proportional to the position of the slugs. Coupled to each of the inductors is an oscillator and counter for providing a pulsed output, the pulse width of which is proportional to the position of the respective slug. A controller, such as a computer control or logic sequence circuit, is provided to control the oscillators and counters. The controller is further responsive to the counter outputs to control a display presentation on a video display coupled thereto.Other References
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