US4853920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Information recording medium and reproducing method therefor
Assignee: Canon Inc
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Filing: 1988-03-22
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Granted: 1989-08-01
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Expires: 2008-03-22
Abstract
Abstract An information reproducing medium comprises plural tracks for recording information arranged to form a band and such plural bands are arranged normal to the direction of the track arrangement. The track has no area for obtaining an information reproducing clock. In a reproducing method, when information on one track of one band is to be reproduced, an information reproducing clock is derived from at least a portion of information on a track other than the one track, preferably a track adjacent thereto.
Inventors
- 👤 Hideki Hosoya
- 👤 Akio Aoki
- 👤 Masahiko Enari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:41
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/14; G11B20/1403; G11B20/1423; G11B20/1426; G11B20/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
94 words
An apparatus for reproducing information from an information track having information recorded thereon by a self-clocking modulation system, comprising: sensor means for receiving a projection of an information track desired to be read and at least a portion of an information track other than said desired information track; means for producing a reproducing clock from a signal received by said sensor means from said portion of said information track other than said desired information track; and means for reproducing information received by said sensor means from said desired information track using said reproducing clock.
Claim 2
Independent Claim
94 words
An apparatus for reproducing information from an information track having information recorded thereon by a self-clocking modulation system, comprising: sensor means for receiving a projection of an information track desired to be read and at least a portion of an information track other than said desired information track; means for producing a reproducing clock from a signal received by said sensor means from said portion of said information track other than said desired information track; and means for reproducing information received by said sensor means from said desired information track using said reproducing clock.
Claim 3
Dependent Claim
25 words
An information reproducing apparatus according to claim 1 wherein said information track other than said desired information track is adjacent to said desired information track.
Claim 4
Independent Claim
60 words
A method for reproducing information from an information track having the information recorded thereon by a self-clocking modulation system, comprising the steps of: producing a reproducing clock from an information track other than the desired information track from which said information is to be read; and reading out said information from said desired information track by using said reproducing clock.
Claim 5
Independent Claim
60 words
A method for reproducing information from an information track having the information recorded thereon by a self-clocking modulation system, comprising the steps of: producing a reproducing clock from an information track other than the desired information track from which said information is to be read; and reading out said information from said desired information track by using said reproducing clock.
Claim 6
Independent Claim
81 words
A method for reproducing information from an information track having the information recorded thereon by a self-clocking modulation system, comprising the steps of: projecting a desired information track to be read and at least a portion of an information track adjacent to said desired information track to a read sensor; producing a reproducing clock from a signal of said adjacent information track detected by said read sensor; and reproducing the information of said desired information track by using said reproducing clock.
Claim 7
Independent Claim
81 words
A method for reproducing information from an information track having the information recorded thereon by a self-clocking modulation system, comprising the steps of: projecting a desired information track to be read and at least a portion of an information track adjacent to said desired information track to a read sensor; producing a reproducing clock from a signal of said adjacent information track detected by said read sensor; and reproducing the information of said desired information track by using said reproducing clock.
Claim 8
Dependent Claim
132 words
An information recording medium comprising: a plurality of information tracks each of which extends in a first direction, said plurality of information tracks being arranged in a second direction thereby forming a band, said second direction being perpendicular to said first direction, said plurality of information tracks being adapted to have information recorded thereon which is read in the second direction, said recording medium including at least two bands arranged in said first direction; and a separation area provided between said at least two bands, wherein at least information other than that for generating an information reproducing clock is recorded in a portion of an information track adjacent said separation area, said portion is usable for generating said information reproducing clock for an information track adjacent said information track having said portion.
Claim 9
Dependent Claim
132 words
An information recording medium comprising: a plurality of information tracks each of which extends in a first direction, said plurality of information tracks being arranged in a second direction thereby forming a band, said second direction being perpendicular to said first direction, said plurality of information tracks being adapted to have information recorded thereon which is read in the second direction, said recording medium including at least two bands arranged in said first direction; and a separation area provided between said at least two bands, wherein at least information other than that for generating an information reproducing clock is recorded in a portion of an information track adjacent said separation area, said portion is usable for generating said information reproducing clock for an information track adjacent said information track having said portion.
Claim 10
Dependent Claim
23 words
An information recording medium according to claim 5 wherein said information track includes an area for distinguishing said information track from another track.
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) | 1992-07-31 | 1993-01-30 | 1993-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-31 | 1997-01-30 | 1997-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-31 | 2001-01-30 | 2001-08-01 | $7700.00 | Window Closed / Lapsed |