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Photoelectric-digitized-joystick

Three digit channel entry system

OF THE EMBODIMENT Referring to FIG. 1, a television receiver includes an RF input terminal 100 ...

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Remote control system for marine engine

A first feature of the invention is adapted to be embodied in a remote control system for a ...

Remote starting system for a vehicle having a diesel engine

We claim: 1. A device for detecting the rotational speed of a rotary internal combustion engine ...

Data processing system

The present inventor hereof has focused on that a program-controlled electronic device such as the ...

Multiple well tool control systems in a multi-valve well testing system having automatic control modes

Accordingly, it is a primary object of the present invention to automatically control the operation ...

Iterated foam process and composition for well treatment

OF THE INVENTION I may use any combination of foaming agents which will generate foam at a desired ...

Photoelectric digitized joystick

Details

Inventors: Liu, William S. Y.;
Assignee:
Primary Examiner: Chiu; Raleigh W.
Assistant Examiner:
Attorney, Agent or Firm: Ostrolenk, Faber, Gerb & Soffen, LLP

A joystick including two light gratings respectively and fixedly mounted on an X-axle and a Y-axle, which are arranged at right angles to each other are movable by an operating stick. Each light grating has a series of apertures equally spaced along the periphery thereof. A light emitter and receiver assembly is disposed about said apertures in each said light grating to detect movement of the light grating, and a control circuit receiving signals from the light emitter and receiver assemblies provides a variable delay output signal corresponding to the movement of the operating stick.

DETAILED DESCRIPTION The present invention provides a photoelectric digitized joystick which eliminates the aforesaid drawbacks.
According to the present invention, two light gratings, each with a series of apertures are fixedly mounted to an X-axle and the Y-axle respectively, and, are arranged at right angles to each other and are moved by an operating stick of the joystick.
Two sets of light emitter and receiver assemblies are respectively disposed relative to the apertures on the light gratings to detect movement of the light gratings.
When the X-axle and the Y-axle are moved by the operating stick, an integrated time base circuit receiver or signal is induced by the light emitter and receiver assemblies to provide a variable delay output corresponding to the movement of the operating stick.

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