US3565366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tape transport control system
Assignee: SEYMOUR ELECTRONICS AND AUTOMATION Inc A KA CORP
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Filing: 1968-11-01
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Granted: 1971-02-23
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Expires: 1988-11-01
Abstract
Abstract A control circuit for a reel-to-reel tape transport system for controlling the transfer of tape between the reels. The control circuit includes sensing the demand of tape during a tape transfer operation and providing an electrical signal representative of the demand. The demand signal is compared with a feedback signal representative of the speed of the drive for one of the driven reels and providing a control signal corresponding thereto. This control signal is then combined with a reference signal of a preselected frequency to provide a speed control signal that is applied to the drive control to control the speed in accordance with the sensed parameters.
Inventors
- 👤 William G Campbell Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:12
CPC Classifications
G; G06; G06K; G06K13/00; G06K13/18; G06K13/26; G11; G11B; G11B15/00; G11B15/02; G11B15/16; G11B15/18; G11B15/43; G11B15/46
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
188 words
In a reel-to-reel tape transport system for transferring tape from one storage reel to another storage reel including: a pair of rotatable tape storage reels mounted in a spaced-apart relationship and having tape extending between the reels, means for driving at least one of the storage reels to transfer tape onto the driven reel from the other reel, means for sensing the demand of tape for transferring tape from reel to reel and providing an electrical signal corresponding thereto, control circuit means connecTed to be responsive to the signal from said sensing means for actuating said one drive means, said control circuit means including means for providing a feedback signal from said one drive means representative of the speed of said drive means, means for comparing the feedback signal and the signal from said sensing means and providing an output control signal corresponding thereto, means for generating electrical signals of a preselected frequency, means for combining the signals of a preselected frequency and the output control signal to provide a speed control signal corresponding thereto, and means for applying the speed control signals to said one drive means.
Claim 2
Dependent Claim
188 words
In a reel-to-reel tape transport system for transferring tape from one storage reel to another storage reel including: a pair of rotatable tape storage reels mounted in a spaced-apart relationship and having tape extending between the reels, means for driving at least one of the storage reels to transfer tape onto the driven reel from the other reel, means for sensing the demand of tape for transferring tape from reel to reel and providing an electrical signal corresponding thereto, control circuit means connecTed to be responsive to the signal from said sensing means for actuating said one drive means, said control circuit means including means for providing a feedback signal from said one drive means representative of the speed of said drive means, means for comparing the feedback signal and the signal from said sensing means and providing an output control signal corresponding thereto, means for generating electrical signals of a preselected frequency, means for combining the signals of a preselected frequency and the output control signal to provide a speed control signal corresponding thereto, and means for applying the speed control signals to said one drive means.
Claim 3
Dependent Claim
43 words
In a reel-to-reel tape transport system as defined in claim 1 wherein the means for generating the signals of a preselected frequency comprises oscillator means for generating pulses of a preselected repetition rate faster than the mechanical time constant of the drive means.
Claim 4
Dependent Claim
38 words
In a reel-to-reel tape transport system as defined in claim 2 wherein said combining means modifies the pulses from the oscillator by varying the widths of the pulses in accordance with the control signal from said comparison means.
Claim 5
Dependent Claim
42 words
In a reel-to-reel tape transport system as defined in claim 3 wherein said means for sensing includes tape tensioning means for sensing the tension on the tape extending between the reels providing an electrical signal corresponding to the tension of the tape.
Claim 6
Dependent Claim
72 words
In a reel-to-reel tape transport system as defined in claim 4 wherein said sensing means includes a swingable tape tension arm mounted adjacent one of the reels and engaging the tape extending between the reels to be swingable in response to the changes in tape tension, and electrical signalling means associated with the tension arm and coupled to be responsive to the positions of the arm for providing electrical signals corresponding thereto.
Claim 7
Dependent Claim
84 words
In a reel-to-reel tape transport system as defined in claim 5 wherein said sensing means includes a swingable arm mounted adjacent each of said reels for engaging the tape from the associated reel and movable in response to the changes in tape tension with changes in the drive means for transferring tape from one reel to the other reel, electrical signalling means associated with each swingable arm and coupled to be responsive to the positions of the arm for providing electrical signals corresponding thereto.
Claim 8
Dependent Claim
60 words
In a reel-to-reel tape transport system as defined in claim 6 wherein said electrical signalling means comprises individual potentiometer means for each tension arm having a movable arm and means coupled between each of the tension arms and the individual potentiometer arms for changing the position of the latter arms to correspond to the position of the individual tension arms.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |