Servo-controlled microscope stage

Details Servo-controlled microscope stage Servo-controlled microscope stage

1975-07-08

1977-06-14

Dildine, Jr., R. Stephen

Registers

Transfer mechanism

Traveling pawl

318600, 318605, 318655, G06J 100, G05B 1942, G05B 1934

Patent

active

040299490

ABSTRACT:
A system for controlling the position of a movable element, such as a microscope slide in one embodiment thereof, which system includes a unique high resolution digital-to-analog converter which converts a digital command signal to an analog servo input command for moving the element along an arcuate path in two orthogonal directions and for moving the element in a third orthogonal direction along a linear path. The unique digital-to-analog converter which would be broadly useful in many different applications includes means responsive to selected combinations of the most significant bits of a digital input signal for supplying equally weighted selected combinations of a reference signal and responsive to selected combinations of the least significant bits thereof for supplying binary weight selected combinations of the reference signal, the equally weighted binary weighted combinations being combined to produce the analog output signal.

REFERENCES:
patent: 3943343 (1976-03-01), Irie

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