Patent US5060086A successfully refreshed from Google Patents.
US5060086A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for assembling of video tapes
Assignee: W Steenbeck and Co GmbH and Co
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Filing: 1989-02-15
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Granted: 1991-10-22
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Expires: 2009-02-15
Abstract
Abstract An apparatus for assembling a video tape has a video tape drive, at least one sound track drive, and a drive coupled connection to provide a synchronous run between the drives under all operational conditions inclusive of standstill, positive acceleration, uniform tape speed and negative acceleration. To compensate for slip of the video tape, there is provided a closed-loop controller for the drive coupled connection.
Inventors
- 👤 Wolf-Rudiger Otto
- 👤 Joachim Behrens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:54
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/46; G11B27/00; G11B27/002; G11B27/02; G11B27/022; G11B27/024; G11B27/10; G11B2220/00; G11B2220/90
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
231 words
An apparatus for assembling audio and video tapes in editing tapes, comprising at least one device for driving a video tape which issues synchronization signals; at least one picture film drive and at least one sound film drive; a main drive device; drive coupling means including a main shaft driven by said main drive device to provide a synchronous run of said video tape, said picture film and said sound film relative to each other under operational conditions which include standstill, positive acceleration, uniform tape speed and negative acceleration, said drive coupling means commonly driving said device for driving a video tape, said picture film drive and said sound film drive; an angular position detecting device connected to said main shaft between said main drive device and said sound film drive to issue respective angular position signals; a final controlling device coupled to said main shaft between said main drive device and said device for driving the video tape; a closed-loop controller for receiving and phase-comparing said synchronization signals from said device for driving the video tape and respective signals from said position detecting device and issuing control signals to the final controlling device so that the difference between the position of the video tape in device and the picture film and sound film drives, respectively, are kept to a minimum, thus compensating for the mechanical slip of the video tape.
Claim 2
Independent Claim
231 words
An apparatus for assembling audio and video tapes in editing tapes, comprising at least one device for driving a video tape which issues synchronization signals; at least one picture film drive and at least one sound film drive; a main drive device; drive coupling means including a main shaft driven by said main drive device to provide a synchronous run of said video tape, said picture film and said sound film relative to each other under operational conditions which include standstill, positive acceleration, uniform tape speed and negative acceleration, said drive coupling means commonly driving said device for driving a video tape, said picture film drive and said sound film drive; an angular position detecting device connected to said main shaft between said main drive device and said sound film drive to issue respective angular position signals; a final controlling device coupled to said main shaft between said main drive device and said device for driving the video tape; a closed-loop controller for receiving and phase-comparing said synchronization signals from said device for driving the video tape and respective signals from said position detecting device and issuing control signals to the final controlling device so that the difference between the position of the video tape in device and the picture film and sound film drives, respectively, are kept to a minimum, thus compensating for the mechanical slip of the video tape.
Claim 3
Dependent Claim
24 words
Apparatus as defined in claim 1, wherein the drive coupling means includes a non-rigid mechanical connection to at least one of the individual drives.
Claim 4
Dependent Claim
33 words
Apparatus as defined in claim 1, wherein said drive coupling means includes an intermediate transmission gear arrangement connecting the main drive device and the at least one device for driving the video tape.
Claim 5
Dependent Claim
21 words
Apparatus as defined in claim 1, wherein said drive coupling means includes a brake/clutch device and an intermediate transmission gear arrangement.
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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) | 1994-10-21 | 1995-04-22 | 1995-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-21 | 1999-04-22 | 1999-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-21 | 2003-04-22 | 2003-10-22 | $7700.00 | Window Closed / Lapsed |