US3198527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for synchronizing transducer head scanning motion in sound recording and reproducing machines
Assignee: Dictaphone Corp
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Filing: 1960-09-30
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Granted: 1965-08-03
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Expires: 1980-09-30
Abstract
No abstract record available.
Inventors
- 👤 Stanton George Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:28
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
212 words
THE METHOD OF TRACKING A RECORD HEAD ACROSS A MAGNETIC RECORD WHICH IS ADAPTED TO HAVE DEPOSITED THEREON A PLURALITY OF SIDE BY SIDE SIGNAL TRACKS LYING ALONG THE DIRECTION OF MOTION OF THE RECORD RELATIVE TO THE HEAD COMPRISING THE STEPS OF MOVING THE RECORD AT SUBSTANTIALLY CONSTANT VELOCITY IN A FIRST DIRECTION RELATIVE TO SAID RECORD HEAD, MOVING SAID RECORD HEAD SLOWLY RELATIVE TO SAID RECORD IN A SECOND DIRECTION APPROXIMATELY AT RIGHT ANGLES TO SAID FIRST DIRECTION TO TRACE OUT A SIGNAL TRACK WHICH IS INCLINED AT A SLIGHT ANGLE TO SAID FIRST DIRECTION, PERIODICALLY AT EQUAL INTERVALS MEASURING THE AMOUNT OF TRAVEL OF SAID SECOND HEAD RELATIVE TO SAID RECORD IN SAID SECOND DIRECTION, AND IF THE CUMLATIVE ERROR IN THE AMOUNT OF TRAVEL OF SAID RECORD HEAD RELATIVE TO SAID RECORD ALONG SAID SECOND DIRECTION DOES NOT EXCEED A PREDETERMINED VALUE, THEN CONTUINING THE MOTIONS OF SAID RECORD AND HEAD IN BOTH SAID DIRECTIONS FOR THE NEXT ONE OF SAID EQUAL INTERVALS BUT IF SAID ERROR EXCEEDS SAID PREDETERMINED VALUE, STOPPING THE MOTION OF SAID HEAD RELATIVE TO SAID RECORD ALONG SAID SECOND DIRECTION WITHOUT CHANGING THE RELATIVE MOTION IN SAID FIRST DIRECTION AND THEN AFTER A GIVEN INTERVAL RESUMING THE RELATIVE MOTION IN SAID SECOND DIRECTION.
Claim 2
Independent Claim
212 words
THE METHOD OF TRACKING A RECORD HEAD ACROSS A MAGNETIC RECORD WHICH IS ADAPTED TO HAVE DEPOSITED THEREON A PLURALITY OF SIDE BY SIDE SIGNAL TRACKS LYING ALONG THE DIRECTION OF MOTION OF THE RECORD RELATIVE TO THE HEAD COMPRISING THE STEPS OF MOVING THE RECORD AT SUBSTANTIALLY CONSTANT VELOCITY IN A FIRST DIRECTION RELATIVE TO SAID RECORD HEAD, MOVING SAID RECORD HEAD SLOWLY RELATIVE TO SAID RECORD IN A SECOND DIRECTION APPROXIMATELY AT RIGHT ANGLES TO SAID FIRST DIRECTION TO TRACE OUT A SIGNAL TRACK WHICH IS INCLINED AT A SLIGHT ANGLE TO SAID FIRST DIRECTION, PERIODICALLY AT EQUAL INTERVALS MEASURING THE AMOUNT OF TRAVEL OF SAID SECOND HEAD RELATIVE TO SAID RECORD IN SAID SECOND DIRECTION, AND IF THE CUMLATIVE ERROR IN THE AMOUNT OF TRAVEL OF SAID RECORD HEAD RELATIVE TO SAID RECORD ALONG SAID SECOND DIRECTION DOES NOT EXCEED A PREDETERMINED VALUE, THEN CONTUINING THE MOTIONS OF SAID RECORD AND HEAD IN BOTH SAID DIRECTIONS FOR THE NEXT ONE OF SAID EQUAL INTERVALS BUT IF SAID ERROR EXCEEDS SAID PREDETERMINED VALUE, STOPPING THE MOTION OF SAID HEAD RELATIVE TO SAID RECORD ALONG SAID SECOND DIRECTION WITHOUT CHANGING THE RELATIVE MOTION IN SAID FIRST DIRECTION AND THEN AFTER A GIVEN INTERVAL RESUMING THE RELATIVE MOTION IN SAID SECOND DIRECTION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |