Apparatus for projecting and moving a spot of light in a scene p

Details Apparatus for projecting and moving a spot of light in a scene p Apparatus for projecting and moving a spot of light in a scene p

1991-11-22

1994-08-23

Harrison, Jessica J.

Amusement devices: games

Surface projectile game; game element

Simulated game

273185B, 273358, A63B 6936

Patent

active

053401085

ABSTRACT:
Apparatus for projecting selected images of a scene onto a screen, such as images of a golf course looking toward a green, and for projecting and moving a spot of light on the screen superimposed on the scene, such as to represent the travel of a hit golf ball toward the green in the scene, provides both a scene projector and a light spot projector secured in fixed relationship in the same housing and provides dedicated control circuitry for controlling the apparatus in response to instruction signals received from outside the apparatus. The spot projector includes two rotatable mirrors controlled by two stepper motors to control the movement of the spot on the screen. Special circuitry is provided to generate control signal pulses for the stepper motors using a combination of a count signal pulse and a synchronizing pulse. Compensation for nonlinearities in the stepper motors may be provided by reference to a correlation table stored in memory. The scene projector may be provided with automatic focus control using a modulated light beam and stepper motor position control.

REFERENCES:
patent: 2783999 (1957-03-01), Simjian
patent: 3300218 (1967-01-01), Speiser
patent: 3469905 (1969-09-01), Baldwin et al.
patent: 3501152 (1970-03-01), Conklin et al.
patent: 3513707 (1970-04-01), Russell et al.
patent: 3528733 (1970-09-01), Pratt et al.
patent: 3589732 (1971-06-01), Russell et al.
patent: 4086630 (1978-04-01), Speiser et al.
patent: 4150825 (1979-04-01), Wilson et al.
patent: 4160942 (1979-07-01), Lynch et al.
patent: 4168115 (1979-09-01), Russell et al.
patent: 4437672 (1984-03-01), Armantrout et al.

Affiliated with

Also associated with

Rating

Apparatus for projecting and moving a spot of light in a scene p does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for projecting and moving a spot of light in a scene p, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for projecting and moving a spot of light in a scene p will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-498012