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US4539663A Expired / Lapsed US ⏱️ 0.0 years remaining

Disc playing system with continuous playing function

Assignee: Pioneer Corp
•
Filing: 1984-08-10
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Granted: 1985-09-03
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Expires: 2004-08-10
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Abstract

Abstract An automatic disc playing system for playing selected ones of a plurality of discs stored therein in succession, includes a disc storing part for holding the discs, having a plurality of slots juxtaposed in a predetermined direction, a detection means for detecting the presence or absence of a disc in each of the slot, and a memory means for memorizing the number of vacant slots in accordance with the output signal of the detection means. The detection means is made up of a plurality of members provided to each of the slots, to be shifted when a disc is put in the slot, and a sensor means to be moved along the direction of the arrangement of the slots for detecting the position of each of the members provided to the slots.

Inventors

  • 👤 Masaya Ishibashi
  • 👤 Atuki Tada
  • 👤 Jun Kanda

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 01:08
CPC Classifications
G; G07; G07F; G07F17/00; G07F17/30; G07F17/305; G11; G11B; G11B17/00; G11B17/22; G11B17/30; G11B27/00; G11B27/002

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 141 words
A disc playing system for playing selected ones of a plurality of stored discs in succession, comprising: disc storing part having a plurality of slots for receiving a disc which are juxtaposed in a predetermined direction with a predetermined pitch, where a sequential number is assigned to each of said slots; a detection means for detecting whether or not a disc is present in each of said slots; and a memory means for memorizing the number of vacant slots in accordance with an output signal from said detection means, wherein said detection means includes a plurality of members movably provided in each of said slots and to be shifted when a disc is put in the slot, and a sensor means movably disposed along said direction of arrangement of slots for in turn detecting the position of each of said members.
Claim 2
Dependent Claim 141 words
A disc playing system for playing selected ones of a plurality of stored discs in succession, comprising: disc storing part having a plurality of slots for receiving a disc which are juxtaposed in a predetermined direction with a predetermined pitch, where a sequential number is assigned to each of said slots; a detection means for detecting whether or not a disc is present in each of said slots; and a memory means for memorizing the number of vacant slots in accordance with an output signal from said detection means, wherein said detection means includes a plurality of members movably provided in each of said slots and to be shifted when a disc is put in the slot, and a sensor means movably disposed along said direction of arrangement of slots for in turn detecting the position of each of said members.

References Cited (Backward Citations)

US1868846A Cited
US3131936A Cited
US3378264A Cited
US3246899A Cited
US3231323A Cited
US3420532A Cited
US3662344A Cited
US3976301A Cited
US4092671A Cited
US4218065A Cited
US4273342A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-09-02 1989-03-04 1989-09-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-09-02 1993-03-04 1993-09-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-09-02 1997-03-04 1997-09-03 $7700.00 Window Closed / Lapsed

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