US3601558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cartridge-type magnetic tape recording and reproducing apparatus with means to indicate the coercivity of the tape
Assignee: Panasonic Holdings Corp
•
Filing: 1968-11-13
•
Granted: 1971-08-24
•
Expires: 1988-11-13
Abstract
Abstract A cartridge-type magnetic tape recording and reproducing apparatus which is so designed that the recording or reproducing conditions are automatically adjusted in accordance with the physical characteristics of a magnetic tape accommodated in a tape cartridge or with the reproducing conditions of a recorded tape accommodated in said tape cartridge.
Inventors
- 👤 Hiroshi Sugaya
- 👤 Fukashi Kobayashi
- 👤 Mitsuaki Ono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:02
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/675; G11B15/67581; G11B15/67584; G11B15/02; G11B15/05; G11B15/06; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B23/08707; G11B23/08714
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
107 words
In a tape recording and reproducing apparatus including a tape cartridge having a casing, supply and takeup reels accommodated in said casing, magnetic tape of a predetermined coercivity disposed on said reels, and magnetic head means for applying a signal to said magnetic tape, the improvement comprising: at least one deformation formed in said casing representing said predetermined coercivity; means detecting said at least one deformation including means disposed on said recording and reproducing apparatus and cooperating with said deformation; and transducing means, including said magnetic head means and means operatively associated with said detecting means for adjusting the amplitude of said signals applied to said tape.
Claim 2
Dependent Claim
107 words
In a tape recording and reproducing apparatus including a tape cartridge having a casing, supply and takeup reels accommodated in said casing, magnetic tape of a predetermined coercivity disposed on said reels, and magnetic head means for applying a signal to said magnetic tape, the improvement comprising: at least one deformation formed in said casing representing said predetermined coercivity; means detecting said at least one deformation including means disposed on said recording and reproducing apparatus and cooperating with said deformation; and transducing means, including said magnetic head means and means operatively associated with said detecting means for adjusting the amplitude of said signals applied to said tape.
Claim 3
Dependent Claim
45 words
The apparatus accoRding to claim 1 wherein said at least one deformation further comprises at least one hole defined by said cartridge casing, the depth of said hole within said casing being proportional to the coercive force of the magnetic tape contained within said cartridge.
Claim 4
Dependent Claim
33 words
The tape recording and reproducing apparatus of claim 1, further comprising means operatively associated with said detecting means and varying the rate at which said magnetic tape is driven past said head means.
Claim 5
Dependent Claim
82 words
The tape recording and reproducing apparatus of claim 3, wherein said driving means comprises: a driving shaft of a motor having a plurality of diameter portions; a flywheel; means operatively connecting said flywheel with said tape; and means driving said fly wheel through said driving shaft, said flywheel-driving means being operatively connected to said detecting means; and wherein said flywheel-driving means is operatively associated with a given diameter portion of said shaft to vary the speed at which said tape is driven.
Claim 6
Dependent Claim
90 words
The recording and reproducing apparatus of claim 3, wherein said driving means comprises a motor; means operatively connecting said motor to said tape; means generating a signal having a frequency proportional to the rate of rotation of said motor; and means converting said generated signal into an output having an amplitude proportional to the frequency of said generated signal; wherein said detecting means includes means switching from a first of said converting means to a second of said converting means to vary the speed at which said tape is driven.
Claim 7
Dependent Claim
20 words
The recording and reproducing apparatus of claim 5, wherein said first and second converting means each comprises a filter circuit.
References Cited (Backward Citations)
US3037093A
Cited
US3247328A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |