Patent US5122999A successfully refreshed from Google Patents.
US5122999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compact disk player
Assignee: Pioneer Corp
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Filing: 1989-09-20
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Granted: 1992-06-16
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Expires: 2009-09-20
Abstract
Abstract A compact disk player for playing back data recorded on a compact disk. The compact disk has a surface on which a lead-in area, a program area and a lead-out area are distinctly provided. The program area contains data to be played back to which an address is allocated. The compact disk player includes a pickup and a servo mechanism for controlling the position of the pickup. The compact disk player further includes a controller for servo-locking the pickup to a position where the reading of the data contained in the program area is interrupted and controlling the servo mechanism so that the pickup is positioned in a predetermined position allocated with a predetermined address for the sake of subsequent resumption of the data reading if an address of the servo-locked position is outside the program area.
Inventors
- 👤 Toshiyuki Kimura
- 👤 Fumio Endo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:29
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/08; G11B7/085; G11B7/004; G11B7/005
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
177 words
A compact disk player for playing back data recorded on a compact disk having a surface on which a lead-in area, a program area and a lead-out area are successively provided wherein the program area contains data to be played back to which an address is allocated, comprising: a pickup movably positioned relative to the surface of the compact disk for reading the data contained in the lead-in area, the program area and the lead-out area; a servo mechanism for controlling the position of said pickup; and control means for servo-locking said pickup at a stop position when the reading of the data of said disk is interrupted, for determining whether or not an address of the stop position is located within the program area, the lead-in area or the lead-out area and for controlling said servo mechanism so that if the address of the stop position is in the lead-in area or the lead-out area, said pickup is positioned in a predetermined position allocated to a predetermined address for a subsequent resumption of the data reading.
Claim 2
Dependent Claim
177 words
A compact disk player for playing back data recorded on a compact disk having a surface on which a lead-in area, a program area and a lead-out area are successively provided wherein the program area contains data to be played back to which an address is allocated, comprising: a pickup movably positioned relative to the surface of the compact disk for reading the data contained in the lead-in area, the program area and the lead-out area; a servo mechanism for controlling the position of said pickup; and control means for servo-locking said pickup at a stop position when the reading of the data of said disk is interrupted, for determining whether or not an address of the stop position is located within the program area, the lead-in area or the lead-out area and for controlling said servo mechanism so that if the address of the stop position is in the lead-in area or the lead-out area, said pickup is positioned in a predetermined position allocated to a predetermined address for a subsequent resumption of the data reading.
Claim 3
Dependent Claim
34 words
A compact disk player according to claim 1, wherein if the address of the stop position is within the program area, the data reading is resumed from the position where the reading is interrupted.
Claim 4
Dependent Claim
36 words
A compact disk player according to claim 1, wherein if the address of the stop position is within the lead-in area, said predetermined position for the subsequent resumption is an initial position of the program area.
Claim 5
Dependent Claim
36 words
A compact disk player according to claim 1, wherein if the address of the stop position is within the lead-out area, said predetermined position for the subsequent resumption is an initial position of the program area.
Claim 6
Dependent Claim
52 words
A compact disk player according to claim 1, wherein a plurality of pieces of music are substantially sequentially recorded on the compact disk, and wherein if the stop position is within the program area, the data reading is resumed from an initial position of a piece of music which reproduction is interrupted.
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) | 1995-06-16 | 1995-12-16 | 1996-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-16 | 1999-12-16 | 2000-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-16 | 2003-12-16 | 2004-06-16 | $7700.00 | Window Closed / Lapsed |