US5265077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical disk storage having reduced power consumption during seeking operations
Assignee: Teac Corp
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Filing: 1991-07-11
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Granted: 1993-11-23
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Expires: 2011-07-11
Abstract
Abstract In an optical disk storage, the seek of an optical head is controlled so that the number of seek times cannot exceed a threshold number of times in a predetermined period or an accumulated seek period cannot exceed a threshold period in a predetermined period. Therefore, a wasteful power consumption and a rise in the internal temperature associated with the seek activity can be effectively prevented.
Inventors
- 👤 Kyosuke Yoshimoto
- 👤 Teruo Furukawa
- 👤 Minoru Ozaki
- 👤 Akira Mashimo
- 👤 Hiroyuki Onda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:21
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/08; G11B7/085; G11B7/08505
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
62 words
An optical disk storage comprising: an optical head which records/reproduces information on/from an optical disk; seek means for moving said optical head to a desired track or cylinder on the optical disk; and first control means for controlling said seek means so that said seek means cannot move said optical head more than a threshold number of times in a predetermined period.
Claim 2
Dependent Claim
62 words
An optical disk storage comprising: an optical head which records/reproduces information on/from an optical disk; seek means for moving said optical head to a desired track or cylinder on the optical disk; and first control means for controlling said seek means so that said seek means cannot move said optical head more than a threshold number of times in a predetermined period.
Claim 3
Dependent Claim
127 words
An optical disk storage according to claim 1, wherein said first control means comprises: timer means for measuring the predetermined period; counter means, coupled to said seek means, for counting a number of seek times which the optical head is moved by said seek means; first judging means, coupled to the timer means and the counter means, for judging whether or not the number of seek times exceeds the threshold number of times in the predetermined period; and seek rest means, coupled to said seek means and the first judging means, for interrupting said seek means from moving said optical head for the rest of the predetermined period if the first judging means has judged that the number of seek times exceeds the threshold number of times.
Claim 4
Dependent Claim
24 words
An optical disk storage according to claim 1, wherein said optical disk storage further comprises reset means for changing the threshold number of times.
Claim 5
Dependent Claim
36 words
An optical disk storage according to claim 2, wherein said optical disk storage further comprises reset means for changing the threshold number of times based on the number of seek times counted by the counter means.
Claim 6
Dependent Claim
53 words
An optical disk storage according to claim 4, wherein the reset means establishes a new threshold number of times by adding a difference between the threshold number of times and the number of seek times to the threshold times if the number of seek times does not exceed the threshold number of times.
Claim 7
Dependent Claim
43 words
An optical disk storage according to claim 3 wherein said optical disk storage further comprises temperature detecting means for detecting an internal temperature thereof, said reset means changes the threshold number of times based on the temperature detected by said temperature detecting means.
Claim 8
Dependent Claim
60 words
An optical disk storage comprising: an optical head which records/reproduces information on/from an optical disk; seek means for moving said optical head to a desired track or cylinder on the optical disk; and second control means for controlling said seek means so that said seek means cannot move said optical head more than a threshold period in a predetermined period.
Claim 9
Dependent Claim
60 words
An optical disk storage comprising: an optical head which records/reproduces information on/from an optical disk; seek means for moving said optical head to a desired track or cylinder on the optical disk; and second control means for controlling said seek means so that said seek means cannot move said optical head more than a threshold period in a predetermined period.
Claim 10
Dependent Claim
123 words
An optical disk storage according to claim 7, wherein said second control means comprises: first timer means for measuring the predetermined period; second timer means, coupled to said seek means, for measuring an accumulated seek period for which said optical head is moved by said seek means; second judging means, coupled to the first and second timer means, for judging whether or not the accumulated seek period exceeds the threshold period in the predetermined period; and seek rest means, coupled to said seek means and the second judging means, for interrupting the said seek means from moving said optical head for the rest of the predetermined period of the second judging means has judged that the accumulated seek period exceeds the threshold period.
Claim 11
Dependent Claim
22 words
An optical disk storage according to claim 7, wherein said optical disk storage further comprises reset means for changing the threshold period.
Claim 12
Dependent Claim
34 words
An optical disk storage according to claim 8, wherein said optical disk storage further comprises reset means for changing the threshold period based on the accumulated seek period measured by the second timer means.
Claim 13
Dependent Claim
41 words
An optical disk storage according to claim 9, wherein said optical disk storage further comprises temperature detecting means for detecting an internal temperature thereof, said reset means changes the threshold period based on the temperature detected by said temperature detecting means.
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) | 1996-11-22 | 1997-05-24 | 1997-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-22 | 2001-05-24 | 2001-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-22 | 2005-05-24 | 2005-11-23 | $7700.00 | Window Closed / Lapsed |