US4527265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Position memory for laser reproduction unit
Assignee: Staar SA
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Filing: 1984-05-10
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Granted: 1985-07-02
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Expires: 2004-05-10
Abstract
Abstract A record player apparatus with a laser reproduction unit and a movable support for moving the reproduction unit across the surface of a record as the record is rotated during a playing operation to position the reproduction unit to reproduce recordings in tracks on the records has a non-volatile memory unit for storing identification information read by the reproduction unit from tracks on the records which retains the information when the power supply is cut off and the reproducing is interrupted while the record is being rotated during a playing operation and has a mechanism for locating the reproduction unit in the position occupied when the power supply was cut off to resume the reproducing at the point of interruption when the power supply is reconnected.
Inventors
- 👤 Stephane A. M. d'Alayer de Costemore d'Arc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:43
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/20; G11B7/00; G11B19/02; G11B19/04; G11B27/00; G11B27/10; G11B27/102; G11B27/105; G11B27/11; G11B2220/00; G11B2220/20; G11B2220/25; G11B2220/2537; G11B2220/2545
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
156 words
In a record player apparatus having a laser reproduction unit and a movable support for moving said reproduction unit across the surface of a record as the record is rotated during a playing operation to position the reproduction unit to reproduce recordings in tracks on the records, and a switch for controlling the power supply to said apparatus, the improvement comprising: means including a memory unit for storing identification information read by said reproduction unit from tracks on the record, said memory unit including a non-volatile memory to retain said information when the power supply is cut off by actuation of said switch and the reproducing is interrupted while the record is being rotated during a playing operation; and means for locating the reproduction unit in the position occupied when the power supply was cut off to resume the reproducing at the point of interruption when the power supply is reconnected by actuation of said switch.
Claim 2
Dependent Claim
156 words
In a record player apparatus having a laser reproduction unit and a movable support for moving said reproduction unit across the surface of a record as the record is rotated during a playing operation to position the reproduction unit to reproduce recordings in tracks on the records, and a switch for controlling the power supply to said apparatus, the improvement comprising: means including a memory unit for storing identification information read by said reproduction unit from tracks on the record, said memory unit including a non-volatile memory to retain said information when the power supply is cut off by actuation of said switch and the reproducing is interrupted while the record is being rotated during a playing operation; and means for locating the reproduction unit in the position occupied when the power supply was cut off to resume the reproducing at the point of interruption when the power supply is reconnected by actuation of said switch.
Claim 3
Dependent Claim
42 words
The record player apparatus according to claim 1 wherein said means for locating the reproduction unit comprises a device for locking the reproduction unit in position and against further movement when the power supply is cut off by actuation of said switch.
Claim 4
Dependent Claim
46 words
The record player apparatus according to claim 1 wherein said means for locating the reproduction unit includes means for determining the location of the reproduction unit at the point of interruption based on position information of said reproduction unit derived from data recorded on said record.
Claim 5
Dependent Claim
21 words
The record player apparatus according to claim 3 wherein said position information comprises data as to recorded pieces on said record.
Claim 6
Dependent Claim
27 words
The record player apparatus according to claim 3 wherein said position information comprises data as to the scanning position of the reproduction unit along the recording tracks.
Claim 7
Dependent Claim
28 words
The record player apparatus according to claim 2 wherein said locking device includes a member engagable with said laser unit to mechanically hold the reproduction unit against movement.
Claim 8
Dependent Claim
41 words
The record player apparatus according to claim 6 wherein said member is pivotally mounted and resiliently urged into engagement with said reproduction unit and said apparatus includes a control circuit having an electromagnet for retaining said clear of said reproduction unit.
Claim 9
Dependent Claim
188 words
In a record player apparatus having a laser reproduction unit and a movable support for moving said reproduction unit across the surface of a record as the record is rotated during a playing operation to position the reproduction unit to reproduce recordings in tracks on the record, and a switch for controllng the power supply to said apparatus, the improvement comprising: means including a memory unit for storing identification information read by said reproduction unit from tracks on the record, said memory unit includng a non-volatile memory to retain said information when the power supply is cut off by actuation of said switch and the reproducing of a recording is interrupted while the record is being rotated during a playback operation; and means for locating the reproduction unit in the position occupied when the power supply was cut off to resume the reproducing of the recording at the point of interruption when the power supply is reconnected by actuation of said switch comprising a device for locking the reproduction unit in position and against further movement when the power supply is cut off by actuation of said switch.
Claim 10
Dependent Claim
188 words
In a record player apparatus having a laser reproduction unit and a movable support for moving said reproduction unit across the surface of a record as the record is rotated during a playing operation to position the reproduction unit to reproduce recordings in tracks on the record, and a switch for controllng the power supply to said apparatus, the improvement comprising: means including a memory unit for storing identification information read by said reproduction unit from tracks on the record, said memory unit includng a non-volatile memory to retain said information when the power supply is cut off by actuation of said switch and the reproducing of a recording is interrupted while the record is being rotated during a playback operation; and means for locating the reproduction unit in the position occupied when the power supply was cut off to resume the reproducing of the recording at the point of interruption when the power supply is reconnected by actuation of said switch comprising a device for locking the reproduction unit in position and against further movement when the power supply is cut off by actuation of said switch.
Claim 11
Dependent Claim
195 words
In a record player apparatus having a laser reproduction unit and a movable support for moving said reproduction unit across the surface of a record as the record is rotated during a playing operation to position the reproduction unit to reproduce recordings in tracks on the reocrd, and a switch for controlling the power supply to said apparatus, the improvement comprising: means including a memory unit for storing identification information read by said reproducing unit from tracks on the record, said memory unit including a non-volatile memory to retain said information when the power supply is cut off by actuation of said switch and the reproducing of a recording is interrupted while the record is being rotated during a playing operation; and means for locating the reproduction unit in the position occupied when the power supply was cut off to resume the reproducing of the recording at the point of interruption when the power supply is reconnected by actuation of said switch including means for determining the location of the reproduction unit at the point of interruption based on position information on said record, and means for positioning the reproduction unit at the determined location.
Claim 12
Dependent Claim
195 words
In a record player apparatus having a laser reproduction unit and a movable support for moving said reproduction unit across the surface of a record as the record is rotated during a playing operation to position the reproduction unit to reproduce recordings in tracks on the reocrd, and a switch for controlling the power supply to said apparatus, the improvement comprising: means including a memory unit for storing identification information read by said reproducing unit from tracks on the record, said memory unit including a non-volatile memory to retain said information when the power supply is cut off by actuation of said switch and the reproducing of a recording is interrupted while the record is being rotated during a playing operation; and means for locating the reproduction unit in the position occupied when the power supply was cut off to resume the reproducing of the recording at the point of interruption when the power supply is reconnected by actuation of said switch including means for determining the location of the reproduction unit at the point of interruption based on position information on said record, and means for positioning the reproduction unit at the determined location.
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) | 1988-07-01 | 1988-12-31 | 1989-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-01 | 1992-12-31 | 1993-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-01 | 1996-12-31 | 1997-07-02 | $7700.00 | Window Closed / Lapsed |