US3586789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-speed tape transport control using two control signals
Assignee: Fujitsu Services Ltd
•
Filing: 1968-12-18
•
Granted: 1971-06-22
•
Expires: 1988-12-18
Abstract
Abstract Apparatus for feeding a loop of magnetic tape is described in which signals recorded in a control track coextensively with information signals recorded in an information track are utilized to control the tape feed so that during recording or playback of a block of information signals, the tape is fed at slow speed and between blocks of information signals the tape is fed at fast speed. The tape feed may be automatically stopped at the beginning of each block of information.
Inventors
- 👤 Dennis Norman Butcher
- 👤 James Edward Wicks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:37
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/10; G11B27/19; G11B27/22; G11B15/00; G11B15/02; G11B15/18; G11B15/44
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
165 words
Apparatus for moving a recording medium in which the medium carries more than one block of information, each said block including coextensive recordings in information and control tracks, including first and second drive means for selectively driving the recording medium at slow and fast speeds, respectively, means to produce first and second control signals in response to recording and the absence of recording in the control track, respectively, a control bistable device, means to apply said first control signal to said device to condition said device in a RESET state, means responsive to said first control signal and said device conditioned in a RESET state to energize said first drive means, means to apply said second control signal to said device to condition said device in a SET state and means responsive to said device conditioned in a SET state to energize said second drive means such that said recording medium is driven at a fast speed upon the occurrence of said second control signals.
Claim 2
Dependent Claim
165 words
Apparatus for moving a recording medium in which the medium carries more than one block of information, each said block including coextensive recordings in information and control tracks, including first and second drive means for selectively driving the recording medium at slow and fast speeds, respectively, means to produce first and second control signals in response to recording and the absence of recording in the control track, respectively, a control bistable device, means to apply said first control signal to said device to condition said device in a RESET state, means responsive to said first control signal and said device conditioned in a RESET state to energize said first drive means, means to apply said second control signal to said device to condition said device in a SET state and means responsive to said device conditioned in a SET state to energize said second drive means such that said recording medium is driven at a fast speed upon the occurrence of said second control signals.
Claim 3
Dependent Claim
56 words
An apparatus as claimed in claim 1 in which said means for producing first and second control signals includes an amplifier having first aNd second output lines and transducing means for producing electrical representations from recordings in said control track, said first and second control signals being produced on said first and second output lines, respectively.
Claim 4
Dependent Claim
106 words
An apparatus as claimed in claim 1 in which said means responsive to said first control signal and said device conditioned in a RESET state includes first and second AND gates and an OR gate, said first AND gate having a replay signal and said first output line as inputs thereto, the output of said first AND gate being applied through said OR gate as one input to said second AND gate, the other input of said second AND gate being responsive to said control bistable device in a RESET state with the output of said second AND gate being applied to said first drive means.
Claim 5
Dependent Claim
71 words
An apparatus as claimed in claim 3 in which said means to apply said second control signal to said device includes a third AND gate, one input of which is connected to said second output line of said amplifier and the other input of which is connected to receive said replay signal, The output of said third AND gate being applied to condition said control bistable device in a SET state.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |