Bidirectional deflector driver for video disc

Details Bidirectional deflector driver for video disc Bidirectional deflector driver for video disc

1979-11-19

1982-01-26

Hix, L. T.

Electrical transmission or interconnection systems

Wave form or wave shape determinative or pulse-producing...

With capacitor

307261, 328185, 361152, H03K 1700

Patent

active

043130623

ABSTRACT:
A bidirectional pulse generator for driving a video disc stylus deflector. Responsive to a deflection pulse a charge integrator has its input connected to a polarity selectable current source. The integrator generates a ramped potential output signal having an amplitude proportional to the deflection pulse width and a slope related to the current polarity. Upon termination of the deflection pulse a feedback loop is closed around the integrator to rapidly reset the output potential of the integrator to one of two pre-pulse output amplitudes. A direction control selects the current source polarity and controls the pre-pulse output amplitude and thereby the relative polarity of the output pulse.

REFERENCES:
patent: 3535555 (1970-10-01), Heimer
patent: 3648067 (1972-03-01), Sullivan et al.
patent: 4064406 (1977-12-01), Tiemeijer
patent: 4077015 (1978-02-01), Carson et al.

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