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US3703774A Expired / Lapsed US ⏱️ 0.0 years remaining

Magnetic recording-reproducing device capable of automatic repetitive reproduction

Assignee: Canon Inc
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Filing: 1970-11-17
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Granted: 1972-11-28
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Expires: 1990-11-17
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Abstract

Abstract A magnetic recording-reproducing device, especially suitable for educational purposes or for dictation, which is capable of automatic repetitive reproduction by using a master tape storing therein information units of various lengths and time signals representing the various lengths of such information units. The information units are transferred from the master tape onto a plurality of endless magnetic recording mediums having different lengths, whereafter any particular one of the endless magnetic recording mediums is played back in accordance with a corresponding one of the time signals to thereby repeatedly reproduce the information unit on that particular medium.

Inventors

  • 👤 Takeshi Goshima

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 18:49
CPC Classifications
G; G09; G09B; G09B5/00; G09B5/04

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 262 words
A magnetic recording-reproducing device capable of automatic repetitive reproduction using a pre-recorded master tape storing therein information units of various lengths, comprising: means for mounting supply and take up reels for said master tape, means for mounting a plurality of endless magnetic recording mediums having different lengths, one of said lengths corresponding to one of the various information unit lengths on said master tape, transferring means for reproducing the information units recorded on the master tape and transferring the reproduced information units onto said endless magnetic recording mediums, said endless magnetic recording mediums being driven to move at a predetermined velocity whereby they have different cycles of one rotation; first reproducing means for selectively reproducing the information units transferred onto said endless magnetic recording mediums, said first reproducing means including change-over members adapted to be selectively operable so as to select one of the transferred information units to be reproduced; and second reproducing means for reproducing time control signals having components corresponding to the lengths of the information units recorded on said master tape, said timE control signals being recorded on said master tape in accordance with the information units thereon, said second reproducing means having its output associated with said change-over members of said first reproducing means to selectively operate said change-over members; whereby one of the endless magnetic recording mediums whose cycle of one rotation corresponds to the length of one of the information units recorded on said master tape is selected so that said one information unit transferred onto said selected endless magnetic recording medium may be reproduced repeatedly.
Claim 2
Dependent Claim 262 words
A magnetic recording-reproducing device capable of automatic repetitive reproduction using a pre-recorded master tape storing therein information units of various lengths, comprising: means for mounting supply and take up reels for said master tape, means for mounting a plurality of endless magnetic recording mediums having different lengths, one of said lengths corresponding to one of the various information unit lengths on said master tape, transferring means for reproducing the information units recorded on the master tape and transferring the reproduced information units onto said endless magnetic recording mediums, said endless magnetic recording mediums being driven to move at a predetermined velocity whereby they have different cycles of one rotation; first reproducing means for selectively reproducing the information units transferred onto said endless magnetic recording mediums, said first reproducing means including change-over members adapted to be selectively operable so as to select one of the transferred information units to be reproduced; and second reproducing means for reproducing time control signals having components corresponding to the lengths of the information units recorded on said master tape, said timE control signals being recorded on said master tape in accordance with the information units thereon, said second reproducing means having its output associated with said change-over members of said first reproducing means to selectively operate said change-over members; whereby one of the endless magnetic recording mediums whose cycle of one rotation corresponds to the length of one of the information units recorded on said master tape is selected so that said one information unit transferred onto said selected endless magnetic recording medium may be reproduced repeatedly.
Claim 3
Dependent Claim 70 words
A device according to claim 1, wherein said second reproducing means includes a plurality of tuning circuits connected with said change-over members of said first reproducing means, said change-over members being selectively changed over by the outputs of said tuning circuits, and said time control signal components corresponding to the lengths of said information units differ in frequency and are composed of the tuning frequency components of said tuning circuits.
Claim 4
Dependent Claim 96 words
A device according to claim 1, wherein said transferring means includes a master tape driving member and a control circuit for said driving member, said control circuit being associated with the output of said second reproducing means so as to stop said driving member by means of the output of said second reproducing means, and said time control signals are recorded on said master tape at the positions thereof corresponding to the terminations of said information units on said master tape, whereby said master tape is stopped from moving each time said information units are reproduced.
Claim 5
Dependent Claim 26 words
A device according to claim 3, wherein said transferring means further includes a driving member for the endless magnetic recording mediums and normally drives these mediums.
Claim 6
Dependent Claim 50 words
A device according to claim 4, wherein each of said endless magnetic recording mediums comprises an endless tape, and said driving member for the endless magnetic recording mediums comprises a capstan driven from a drive source, and a pinch roller for urging said endless tape into contact with said capstan.
Claim 7
Dependent Claim 21 words
A device according to claim 5, wherein each of said endless tapes and said pinch roller are contained within a cartridge.
Claim 8
Dependent Claim 340 words
A magnetic recording-reproducing device for educational purposes capable of automatic repetitive reproduction and provided with a pre-recorded master tape storing therein units of teaching material having different lengths, comprising: means for mounting supply and take up reels for said master tape, means for mounting a plurality of endless magnetic recording mediums having recording tracks of different lengths, one of said lengths being twice as long as one of the different information unit lengths on said master tape, transferring means for reproducing the units of teaching material recorded on the master tape and transferring the reproduced units of teaching material onto the recording tracks of said plurality of endless magnetic recording mediums, said endless magnetic recording mediums being driven to move at a predetermined velocity whereby they have different cycles of one rotation; first reproducing means for selectively reproducing the units of teaching material transferred onto said endless magnetic recording mediums, said first reproducing means including change-over members adapted to be selectively operable so as to select one of the transferred units of teaching material to be reproduced; second reproducing means for reproducing time control signals having components corresponding to the lengths of the units of teaching material recorded on said master tape, said time control signals being recorded on said master tape in accordance with the units of teaching material thereon, said second reproducing means having its output associated with said change-over members of said first reproducing means to selectively operate said change-over members; and recording-reproducing means for recording Oral exercises separately on the other recording tracks of said endless magnetic recording mediums and reproducing said other tracks; whereby one of the endless magnetic recording mediums whose cycle of one rotation corresponds to the length of one of said units of teaching material recorded on said master tape is selected so that said one unit of teaching material transferred onto said selected endless magnetic recording medium may be reproduced repeatedly while the speech signals representing the oral exercise may be recorded and reproduced on said selected endless magnetic recording medium.
Claim 9
Dependent Claim 340 words
A magnetic recording-reproducing device for educational purposes capable of automatic repetitive reproduction and provided with a pre-recorded master tape storing therein units of teaching material having different lengths, comprising: means for mounting supply and take up reels for said master tape, means for mounting a plurality of endless magnetic recording mediums having recording tracks of different lengths, one of said lengths being twice as long as one of the different information unit lengths on said master tape, transferring means for reproducing the units of teaching material recorded on the master tape and transferring the reproduced units of teaching material onto the recording tracks of said plurality of endless magnetic recording mediums, said endless magnetic recording mediums being driven to move at a predetermined velocity whereby they have different cycles of one rotation; first reproducing means for selectively reproducing the units of teaching material transferred onto said endless magnetic recording mediums, said first reproducing means including change-over members adapted to be selectively operable so as to select one of the transferred units of teaching material to be reproduced; second reproducing means for reproducing time control signals having components corresponding to the lengths of the units of teaching material recorded on said master tape, said time control signals being recorded on said master tape in accordance with the units of teaching material thereon, said second reproducing means having its output associated with said change-over members of said first reproducing means to selectively operate said change-over members; and recording-reproducing means for recording Oral exercises separately on the other recording tracks of said endless magnetic recording mediums and reproducing said other tracks; whereby one of the endless magnetic recording mediums whose cycle of one rotation corresponds to the length of one of said units of teaching material recorded on said master tape is selected so that said one unit of teaching material transferred onto said selected endless magnetic recording medium may be reproduced repeatedly while the speech signals representing the oral exercise may be recorded and reproduced on said selected endless magnetic recording medium.
Claim 10
Dependent Claim 37 words
A device according to claim 7, wherein said units of teaching material are recorded on said endless magnetic recording mediums at intervals separated by blank intervals substantially equal to the lengths of said units of teaching material.

References Cited (Backward Citations)

GB771104A Cited
US2876561A Cited
US3059348A Cited
US3269033A Cited
US3405461A Cited
US3556535A Cited
US3566138A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-11-28 1976-05-29 1976-11-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-11-28 1980-05-29 1980-11-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-11-28 1984-05-29 1984-11-28 $7700.00 Window Closed / Lapsed

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