US5467331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording and reproducing apparatus having arrangement for recovery of read-out data error
Assignee: Hitachi Ltd
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Filing: 1994-07-05
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Granted: 1995-11-14
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Expires: 2014-07-05
Abstract
Abstract A recording and reproducing apparatus is provided with a recording circuit to record information on a recording medium rotated and a reproducing circuit to reproduce the information from the recording medium rotated. In the mode of reproducing the information from the recording medium, the reproducing circuit retries reproduction if any error has occurred to the data reproduced. The reproducing circuit is provided with a characteristic changing circuit to change its reproduction characteristic. In the mode of reproducing information from the recording medium, the reproducing characteristic of the reproducing circuit is changed by the characteristic changing circuit if any error has occurred to the reproduced data. The reproducing circuit uses the changed reproducing characteristic to retry the reproduction.
Inventors
- 👤 Eisaku Saiki
- 👤 Takuya Mizokami
- 👤 Naoto Matsunami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:06
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/02; G11B20/00; G11B20/10; G11B20/14; G11B20/1403; G11B20/18; G11B7/00; G11B7/004; G11B7/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A recording and reproducing apparatus comprising: driving means for rotating a recording medium; recording means for recording information on the recording medium rotated; reproducing means for reproducing the information from the recording medium rotated, said reproducing means including a phase-synchronizing circuit, said reproducing means retrying reproduction of information from an area in the recording medium where an error has occurred to the data reproduced in cases where the error has occurred to the data reproduced in the reproduction of information from the recording medium; and timing changing means for changing pull-in timing for said phase-synchronizing circuit in said reproducing means, wherein, if an error has occurred to the reproduced data in the reproduction of information from the recording medium, the pull-in timing of said phase-synchronizing circuit in said reproducing means is changed by said timing changing means so that said reproducing means retries the reproduction of information from the area in the recording medium where the error has occurred to the reproduced data, at the changed pull-in timing.
Claim 2
Dependent Claim
168 words
A recording and reproducing apparatus comprising: driving means for rotating a recording medium; recording means for recording information on the recording medium rotated; reproducing means for reproducing the information from the recording medium rotated, said reproducing means including a phase-synchronizing circuit, said reproducing means retrying reproduction of information from an area in the recording medium where an error has occurred to the data reproduced in cases where the error has occurred to the data reproduced in the reproduction of information from the recording medium; and timing changing means for changing pull-in timing for said phase-synchronizing circuit in said reproducing means, wherein, if an error has occurred to the reproduced data in the reproduction of information from the recording medium, the pull-in timing of said phase-synchronizing circuit in said reproducing means is changed by said timing changing means so that said reproducing means retries the reproduction of information from the area in the recording medium where the error has occurred to the reproduced data, at the changed pull-in timing.
References Cited (Backward Citations)
US5062091A
Cited
US5335216A
Cited
US5237550A
Cited
US5233584A
Cited
US5226026A
Cited
US5164932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-11-13 | 1999-05-15 | 1999-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-13 | 2003-05-15 | 2003-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-13 | 2007-05-15 | 2007-11-14 | $7700.00 | Window Closed / Lapsed |