System for adjusting holographic scanner lockout voltage

Details System for adjusting holographic scanner lockout voltage System for adjusting holographic scanner lockout voltage

1986-12-08

1988-03-01

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

235457, 350 371, G02B 532, G02B 2610

Patent

active

047287896

ABSTRACT:
A fixed position optical scanner with a multi-faceted holographic disk includes circuitry for adjusting the lockout voltage as a function of the focal length of the active facet. The disk position is tracked to identify the active facet. A facet identifying signal is used to address a lockout table in processor memory. A digital value retrieved from the lockout table is converted to analog form and applied through a resistor to a voltage divider in the threshold circuit. The voltage divider scales down a white peak following voltage and compares it to a black peak following voltage. The facet-dependent lockout voltage biases the junction of the voltage divider to vary the effective lockout voltage as a function of the focal length of the currently active facet.

REFERENCES:
patent: 3995146 (1976-11-01), Tetrev
patent: 4548463 (1985-10-01), Cato et al.
patent: 4591242 (1986-05-01), Broockman et al.

Affiliated with

Also associated with

Rating

System for adjusting holographic scanner lockout voltage does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System for adjusting holographic scanner lockout voltage, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for adjusting holographic scanner lockout voltage will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-999545