Pulse discriminator circuit

Details Pulse discriminator circuit Pulse discriminator circuit

1975-10-23

1976-07-20

Stolwein, Walter

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250201, 250209, 250236, H01J 3912

Patent

active

039708454

ABSTRACT:
A pulse discriminator circuit for use in a closed loop scanning and positioning system for finding and positioning white blood cells. The surface of a slide is scanned to produce an optical signal which is converted by a sensor into an electrical signal. This signal is applied to the pulse discriminator circuit which provides an output pulse only when a white blood cell is being scanned. The output of the pulse discriminator is coupled to a logic circuit which produces signals that are used to drive the microscope stage to cause the white blood cell to be positioned within a small aperture in the optical system.

REFERENCES:
patent: 3390229 (1968-06-01), 222 PC X
patent: 3463928 (1969-08-01), Murphy
patent: 3772523 (1973-11-01), Montanvert et al.
patent: 3864564 (1975-02-01), Adkins

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