Patent JPS447728Y1 successfully refreshed from Google Patents.
US4754346A
Expired / Lapsed
US
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Music searching device with time dependent search function
Assignee: Pioneer Corp
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Filing: 1986-11-21
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Granted: 1988-06-28
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Expires: 2006-11-21
Abstract
Abstract A music search device for a tape containing a number of pieces of music. If the search begins within a fixed period since the beginning of the currently played piece, the tape jumps back to the beginning of the preceding piece. If the search begins after the fixed period, the tape jumps back to the beginning of the current piece.
Inventors
- 👤 Toshio Takagi
- 👤 Tomomi Watanabe
- 👤 Yuji Fukata
- 👤 Hiroyuki Komata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:41
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/02; G11B15/005; G11B15/05; G11B15/087; G11B27/00; G11B27/10; G11B27/19; G11B27/22
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
124 words
A music search device, comprising: a playback head for playing back signals recorded on a magnetic tape, said magnetic tape including a plurality of blocks of recorded information; means for detecting a beginning of playback of a currently played back block as said magnetic tape moves in a first direction; timer means initialized by said detecting means; means for generating a search operation command; means for moving said magnetic tape to the beginning of one of said blocks removed from said currently played back block by a first number of said blocks upon generation of said search operation command; and means for determining said first number of blocks according to a value of said timer means at the generation of said search operation command.
Claim 2
Dependent Claim
124 words
A music search device, comprising: a playback head for playing back signals recorded on a magnetic tape, said magnetic tape including a plurality of blocks of recorded information; means for detecting a beginning of playback of a currently played back block as said magnetic tape moves in a first direction; timer means initialized by said detecting means; means for generating a search operation command; means for moving said magnetic tape to the beginning of one of said blocks removed from said currently played back block by a first number of said blocks upon generation of said search operation command; and means for determining said first number of blocks according to a value of said timer means at the generation of said search operation command.
Claim 3
Dependent Claim
25 words
A music search device as recited in claim 1, wherein said means for moving moves said magnetic tape in a direction opposite said first direction.
Claim 4
Dependent Claim
87 words
A music search device as recited in claim 2, wherein said timer means is initialized to a predetermined time; and wherein said means for moving moves said tape to the beginning of said block currently being played if said predetermined time has expired in said timer means at the generation of said search operation command and moves said tape to the beginning of the block preceding said block being currently played back if said predetermined time has not expired at the generation of said search operation command.
Claim 5
Dependent Claim
35 words
A music search device as recited in claim 3, wherein said playback head is adapted for playing back said blocks in said first direction of said tape after said means for moving moves said tape.
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) | 1991-06-28 | 1991-12-28 | 1992-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-28 | 1995-12-28 | 1996-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-28 | 1999-12-28 | 2000-06-28 | $7700.00 | Window Closed / Lapsed |