Special effects system
AssigneeRCA Corporation
InventorsLee V. Hedlund, Richard E. Mathys, Sr.
Life of this patent
Estimating the term…
Abstract
A speed control signal for a record segment is generated from starting speed and starting time information signals, an ending speed information signal, and a signal indicative of the duration of the segment. Provision is made for "pre-roll" (stopping the tape ahead of the exact cue point). Duration can be entered directly or computed from start and end times. The speed control signal is applied to a capstan servo, while a cue logic servo controls a reel servo.
Claims9
A method for generating speed control signals for a record segment from starting speed and starting time information signals, an ending speed information signal, and a signal indicative of the duration of said segment, said method comprising computing a change in velocity signal for said segment from said starting and ending speed information signals, and computing said speed control signal from said start speed, change in velocity, and said duration indicative signals, and applying said speed control signal to a capstan servo.
An apparatus for generating speed control signals for a record segment from starting speed and starting time information signals, an ending speed information signal, and a signal indicative of the duration of said segment, said apparatus comprising means for computing a change in velocity signal for said segment from said starting and ending speed information signals, means for computing said speed control signal from said start speed, change in velocity, and said duration indicative signals, a capstan servo, and means for applying said speed control signal to said capstan servo.
Dependencies are inferred from the claim text.