US5173887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disk player pickup control system
Assignee: Pioneer Corp
•
Filing: 1992-07-17
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Granted: 1992-12-22
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Expires: 2012-07-17
Abstract
Abstract A method for controlling the operation of a disk player pickup control system includes the steps of reading position data representing the present position of a pickup from a disk, calculating the distance from the present position to the home position of the pickup according to the position data thus read, and moving the pickup to the home position according to the distance thus calculated. The above-described method for operating the control system is particularly advantageous in that it allows the pickup of a disk player, which does not include a mechanical limit switch, to be moved to the home position.
Inventors
- 👤 Yoshio Aoyagi
- 👤 Hiroyuki Abe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:56
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/08; G11B7/085; G11B7/08505
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
103 words
A method for operating a disk player pickup control system, said method comprising the steps of: when starting reproduction of program data recorded on a disk, reading inherent data of said disk recorded at a predetermined position on said disk defining a home position of said pickup; reading position data representing a present position of a pickup from said disk in which said program data have been recorded; calculating a distance from said present position to said home position of said pickup according to said position data thus read; and moving said pickup to said home position according to the distance thus calculated.
Claim 2
Independent Claim
103 words
A method for operating a disk player pickup control system, said method comprising the steps of: when starting reproduction of program data recorded on a disk, reading inherent data of said disk recorded at a predetermined position on said disk defining a home position of said pickup; reading position data representing a present position of a pickup from said disk in which said program data have been recorded; calculating a distance from said present position to said home position of said pickup according to said position data thus read; and moving said pickup to said home position according to the distance thus calculated.
Claim 3
Dependent Claim
35 words
The method of claim 1, further comprising the step of: obtaining a driving time of a carriage motor for moving said pickup to said home position according to the distance calculated in said calculating step.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-12-22 | 1996-06-22 | 1996-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-22 | 2000-06-22 | 2000-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-22 | 2004-06-22 | 2004-12-22 | $7700.00 | Window Closed / Lapsed |