Title: Tape transport reel servomechanism

Abstract: A tape transport system having a capstan servomechanism for velocity control of tape across a read/write head and separate reel servomechanisms for tape supply and take-up control, and also having tape loops in vacuum columns, is provided with tape position feedback to each reel servomechanism to stabilize reel positions in a standby (zero capstan speed) condition from AC tachometers of the induction-generator type normally used during steady state (steady capstan speed) for velocity feedback.

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Inventors: Gervais, William J. (Van Nuys, CA, US)
Matula, Jerry (Culver City, CA, US)

Application Number: 505861
Filing Date: 1974-09-13
Publication_date: 1976-05-25
Assignee: Pertec Corporation (El Segundo, CA)
Primary Class(es): 242/331.2
Other Classes:
US Patent Ref:

3318545	May, 1967	Tobey	242/184.
3400895	Sep, 1968	Cole et al.	242/184.
3648134	Mar, 1972	Audeh et al.	318/6.

Other Refs:
Primary Examiner: Christian, Leonard D.
Assistant Examiner:
Attorney: Lindenberg, Freilich, Wasserman, Rosen & Fernandez