Patent US1922418A successfully refreshed from Google Patents.
Patent US3706979A successfully refreshed from Google Patents.
US3706979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cassette driven by either vacuum bins or pinch rollers
Assignee: International Business Machines Corp
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Filing: 1971-04-23
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Granted: 1972-12-19
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Expires: 1991-04-23
Abstract
Abstract A data processing system uses a tape-containing cassette for interchange between low-speed recording systems and high-speed or high-performance recording systems. In a low-performance system, the tape is transported wholly within the cassette. The cassette may be removed from a low-performance player and placed in a high-performance player. Then, the tape is partially removed from the cassette for higher speed transport. Modifying the front end of the cassette enables it to be placed either in the lowperformance or high-performance unit enabling upward and downward compatibility. Modifications of the front end may be either manual or aoutomatic.
Inventors
- 👤 James M Tagawa
- 👤 Hui-Li Tiao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:39
CPC Classifications
G; G11; G11B; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B23/08707; G11B23/08785
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
195 words
A data processing system including first and second cassette tape players, the first cassette player operable only with cassettes having a given outline dimension and shape for transducing operations within the cassette and said second player operable only with cassettes having said given outline dimension and shape having tape at least partially removable from the cassette for transducing operations outside the cassette, the improvement including in combination: a cassette having said given outline dimension and shape usable in said system including a record tape and a tape holder within the cassette, means defining a tape within said cassette at least along a front wall portion for transducing operations, and removable front wall means on said cassette adapted to partially close said front wall portion for retaining the tape in said cassette when closed and permitting access to said tape through uncovered portions for facilitating transducing operations with said first tape player and removable for exposing substantially all of said front wall portion whereby a portion of said tape may be removed therethrough with said tape leaving said cassette at opposite ends of said end wall portion for facilitating transducing operations with said second tape player.
Claim 2
Dependent Claim
195 words
A data processing system including first and second cassette tape players, the first cassette player operable only with cassettes having a given outline dimension and shape for transducing operations within the cassette and said second player operable only with cassettes having said given outline dimension and shape having tape at least partially removable from the cassette for transducing operations outside the cassette, the improvement including in combination: a cassette having said given outline dimension and shape usable in said system including a record tape and a tape holder within the cassette, means defining a tape within said cassette at least along a front wall portion for transducing operations, and removable front wall means on said cassette adapted to partially close said front wall portion for retaining the tape in said cassette when closed and permitting access to said tape through uncovered portions for facilitating transducing operations with said first tape player and removable for exposing substantially all of said front wall portion whereby a portion of said tape may be removed therethrough with said tape leaving said cassette at opposite ends of said end wall portion for facilitating transducing operations with said second tape player.
Claim 3
Dependent Claim
81 words
The system set forth in claim 1 wherein said cassette includes a pair of idler rollers at respective opposite ends of said one end wall portion for defining a tape path therebetween within the cassette for facilitating transducing operations with said first tape player and for defining a tape path whereby the tape can leave the cassette when said end wall Closures have opened substantially all of said one end wall portion for facilitating transducing operations with said second tape player.
Claim 4
Dependent Claim
119 words
The apparatus set forth in claim 1 wherein said cassette has a pair of spools therein with the tape extending therebetween for enabling transducing operations, said first tape player for operating with said cassette and having a reel-to-reel transport for transporting tape at a relatively slow rate between said reels inside said cassette transducing operations within the cassette, and said second tape transport including buffer means into which said tape is partially removable and having a transducer adjacent said buffer means for transducing operations outside said cassette and further including reel drive means for rotating the reels in coordinated action with respect to tape being transported through said buffer means and past said transducer at a relatively fast rate.
Claim 5
Dependent Claim
142 words
The data processing system set forth in claim 3 further including in combination: a remote CPU, a communication net for exchanging signals with said remote CPU and further exchanging signals with said first cassette player at a low given rate whereby signals may be exchanged with tape in said cassette at a relatively low rate, and a central CPU electrically connected to said second transport such that signals may be exchanged between said central CPU and tape in said cassette at a relatively high rate, whereby signals can be exchanged between said remote CPU and said central CPU via a single tape containing cassette insertable into and operable with both said first and second tape transports by first inserting one cassette in one of said tape transports performing transducing operations; then in another one of said tape transports and performing transducing operations.
Claim 6
Dependent Claim
146 words
A data processing system having first and second portions operable at different speeds, each portion having a tape transport capable of transporting tape at respective speeds corresponding to the performance requirements of said two portions, a cassette having a tape therein usable with either portion and when used with said first portion, capable of permitting tape transducing operations within the cassette and when used with said second portion, capable of permitting transducing operations on said tape external to the cassette, and means along a front wall portion of said cassette for selectively partially closing said front wall portion for permitting limited access to the cassette for in-the-cassette transducing operations with respect to said first data processing system portion and being completely openable for permitting removal of the tape in an unobstructed manner for facilitating out-of-cassette transducing operations with respect to said second date processing system portion.
Claim 7
Dependent Claim
146 words
A data processing system having first and second portions operable at different speeds, each portion having a tape transport capable of transporting tape at respective speeds corresponding to the performance requirements of said two portions, a cassette having a tape therein usable with either portion and when used with said first portion, capable of permitting tape transducing operations within the cassette and when used with said second portion, capable of permitting transducing operations on said tape external to the cassette, and means along a front wall portion of said cassette for selectively partially closing said front wall portion for permitting limited access to the cassette for in-the-cassette transducing operations with respect to said first data processing system portion and being completely openable for permitting removal of the tape in an unobstructed manner for facilitating out-of-cassette transducing operations with respect to said second date processing system portion.
Claim 8
Dependent Claim
55 words
The system set forth in claim 5 wherein said cassette includes a pair of tape guide members on opposite ends of said end wall portion with the internal tape path being in line between said guides and the tape path external to said cassette including tape passing on opposite outer sides of said tape guides.
Claim 9
Dependent Claim
182 words
A tape containing cassette for use in a data processing system having handlers of different tape transporting speeds, the cassette including: tape holding means therein, the cassette having a pair of tape guides disposed at opposite ends of one end wall with a tape path being defined between said guides and extending along said one wall, and an aperture-forming removable closure mountable on said one end wall portion and cooperating with said guides for retaining the tape in the cassette for enabling tape transport entirely within the cassette at a relatively low speed by one of said handlers and, when removed, opening substantially all of said one end wall portion whereby said tape extending between said guides may be removed from the cassette for enabling tape transport including a tape path portion outside said cassetTe at a relatively high speed by a second one of said handlers and while said closure is on the end wall portion, access is permitted to the tape through said formed apertures whereby said one cassette facilitates data processing operations including tape transporting at substantially different rates.
Claim 10
Dependent Claim
182 words
A tape containing cassette for use in a data processing system having handlers of different tape transporting speeds, the cassette including: tape holding means therein, the cassette having a pair of tape guides disposed at opposite ends of one end wall with a tape path being defined between said guides and extending along said one wall, and an aperture-forming removable closure mountable on said one end wall portion and cooperating with said guides for retaining the tape in the cassette for enabling tape transport entirely within the cassette at a relatively low speed by one of said handlers and, when removed, opening substantially all of said one end wall portion whereby said tape extending between said guides may be removed from the cassette for enabling tape transport including a tape path portion outside said cassetTe at a relatively high speed by a second one of said handlers and while said closure is on the end wall portion, access is permitted to the tape through said formed apertures whereby said one cassette facilitates data processing operations including tape transporting at substantially different rates.
Claim 11
Dependent Claim
24 words
The cassette set forth in claim 7 wherein said closure is hinged to said cassette for pivoting motion between opening and partially closing positions.
Claim 12
Independent Claim
103 words
The method of exchanging data between a high-speed data processing network and a low-speed data processing network comprising taking a cassette having a magnetic tape therein for exchanging signals respectively with said networks and, when exchanging signals with the low-speed network, causing said tape to move entirely within the cassette for transducing operations therein and, when operating with said higher performance data processing network, partially removing the tape from the same cassette and causing transducing operations to be effected with the tape external to said cassette whereby the tape speed may be greatly increased over the tape speed of the internal transducing operations.
Claim 13
Independent Claim
103 words
The method of exchanging data between a high-speed data processing network and a low-speed data processing network comprising taking a cassette having a magnetic tape therein for exchanging signals respectively with said networks and, when exchanging signals with the low-speed network, causing said tape to move entirely within the cassette for transducing operations therein and, when operating with said higher performance data processing network, partially removing the tape from the same cassette and causing transducing operations to be effected with the tape external to said cassette whereby the tape speed may be greatly increased over the tape speed of the internal transducing operations.
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) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |