US5732066A
Expired / Lapsed
US
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Optical record carrier and method for recording and reproducing signals therefrom
Assignee: Toshiba Corp
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Filing: 1996-04-03
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Granted: 1998-03-24
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Expires: 2016-04-03
Abstract
Abstract An optical record carrier and methods and apparatuses for recording and reproducing an information on and from said optical recording carrier, whereby the effects of crosstalk from adjacent tracks is reduced, and stable tracing control is possible, is achieved. A recording track to which information divided into sector units is recorded is formed in a spiral or concentric pattern on the surface of the optical record carrier. Each sector further comprises sixty frames. Each frame comprises a re-sync pattern, frame address, data, and postamble fields. Identification information identifying the sector location of the information is recorded to the data block of the first frame. The user data is recorded after the data is scrambled using a value generated by a fifteen-stage maximum-length sequence generator based on the value of this identification information. The correlation between signals on adjacent tracks is thus reduced, and the effects of crosstalk are randomized, thus reducing the effect on the track error signal and enabling extremely stable tracking control.
Inventors
- 👤 Mitsurou Moriya
- 👤 Shin-ichi Tanaka
- 👤 Koichi Hirayama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:22
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/12; G11B20/1217; G11B20/22; G11B27/00; G11B27/10; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B7/00; G11B7/007; G11B7/00745; G11B7/013; G11B7/004; G11B7/0045; G11B7/005
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
94 words
An optical record carrier for recording an information thereon comprising: a recording track formed thereon in either of a spiral and a concentric pattern; and a plurality of sectors formed on said recording track each for recording said information and a sector information identifying location of said recorded sector, wherein said information is recorded after being randomized using a value generated by a maximum-length sequence generation method with a predetermined stage number of stages with respect to an initial value which is renewed at least one time per a round of said recording track.
Claim 2
Dependent Claim
94 words
An optical record carrier for recording an information thereon comprising: a recording track formed thereon in either of a spiral and a concentric pattern; and a plurality of sectors formed on said recording track each for recording said information and a sector information identifying location of said recorded sector, wherein said information is recorded after being randomized using a value generated by a maximum-length sequence generation method with a predetermined stage number of stages with respect to an initial value which is renewed at least one time per a round of said recording track.
Claim 3
Dependent Claim
28 words
An optical record carrier as claimed in claim 1, wherein said predetermined stage number is determined based on a data quantity of said information recorded on said sectors.
Claim 4
Dependent Claim
21 words
An optical record carrier as claimed in claim 2, wherein said predetermined stage number is equal to or greater than fifteen.
Claim 5
Dependent Claim
28 words
An optical record carrier as claimed in claim 1, wherein said initial value is renewed at an interval of a series of a predetermined number of said sectors.
Claim 6
Dependent Claim
20 words
An optical record carrier as claimed in claim 4, wherein sad predetermined number is equal to or greater than eight.
Claim 7
Dependent Claim
15 words
An optical record carrier as claimed in claim 4, wherein sad predetermined number is sixteen.
Claim 8
Dependent Claim
117 words
A recording method for recording an information on a recording track having a plurality of sectors formed on an optical record carrier in either of a spiral and a concentric pattern, said method comprising the steps of: producing an information unit suitable for recording to said sector based on said information; producing a sector information indicative of the location of corresponding sector for recording said produced information unit; producing an initial value based on said sector information; producing a randomized number based on said initial value utilizing a maximum-length sequence generation method with a first predetermined number of stages determined according to a quantity of said information unit; and scrambling said information unit with said randomized number.
Claim 9
Dependent Claim
117 words
A recording method for recording an information on a recording track having a plurality of sectors formed on an optical record carrier in either of a spiral and a concentric pattern, said method comprising the steps of: producing an information unit suitable for recording to said sector based on said information; producing a sector information indicative of the location of corresponding sector for recording said produced information unit; producing an initial value based on said sector information; producing a randomized number based on said initial value utilizing a maximum-length sequence generation method with a first predetermined number of stages determined according to a quantity of said information unit; and scrambling said information unit with said randomized number.
Claim 10
Dependent Claim
24 words
A recording method as claimed in claim 7, wherein said initial value is renewed at least one time per a round of said track.
Claim 11
Dependent Claim
28 words
A recording method as claimed in claim 7, wherein said sector information is renewed at an interval of a series of a second predetermined number of said sectors.
Claim 12
Dependent Claim
20 words
A recording method as claimed in claim 9, wherein said second predetermined number is equal to or greater than eight.
Claim 13
Dependent Claim
15 words
A recording method as claimed in claim 9, wherein said second predetermined number is sixteen.
Claim 14
Dependent Claim
20 words
A recording method as claimed in claim 7, wherein said first predetermined number is equal to or greater than fifteen.
Claim 15
Dependent Claim
132 words
A recording apparatus for recording an information on a recording track having a plurality of sectors formed on an optical record carrier in either of a spiral and a concentric pattern, said apparatus comprising: an information unit producing means for producing an information unit suitable for recording to said sector based on said information; a sector information producing means for producing a sector information indicative of the location of corresponding sector for recording said information unit; an initial value producing means for producing an initial value based on said sector information; and a scrambling means for scrambling said information unit with a randomized number generated based on said initial value utilizing a maximum-length sequence generation method with a first predetermined number of stages determined according to a quantity of said information unit.
Claim 16
Dependent Claim
132 words
A recording apparatus for recording an information on a recording track having a plurality of sectors formed on an optical record carrier in either of a spiral and a concentric pattern, said apparatus comprising: an information unit producing means for producing an information unit suitable for recording to said sector based on said information; a sector information producing means for producing a sector information indicative of the location of corresponding sector for recording said information unit; an initial value producing means for producing an initial value based on said sector information; and a scrambling means for scrambling said information unit with a randomized number generated based on said initial value utilizing a maximum-length sequence generation method with a first predetermined number of stages determined according to a quantity of said information unit.
Claim 17
Dependent Claim
20 words
A recording apparatus as claimed in claim 13, wherein said first predetermined number is equal to or greater than fifteen.
Claim 18
Dependent Claim
25 words
A recording apparatus as claimed in claim 13, wherein said initial value is renewed at least one time per a round of said recording track.
Claim 19
Dependent Claim
28 words
A recording apparatus as claimed in claim 13, wherein said sector information is renewed at an interval of a series of a second predetermined number of said sectors.
Claim 20
Dependent Claim
20 words
A recording apparatus as claimed in claim 16, wherein said second predetermined number is equal to or greater than eight.
Claim 21
Dependent Claim
15 words
A recording apparatus as claimed in claim 16, wherein said second predetermined number is sixteen.
Claim 22
Dependent Claim
155 words
A reproducing method for reproducing an information from a recording track having a plurality of sectors, wherein said information is recorded together with a sector information indicative of the locations of corresponding sectors recording said information, on in either of a spiral and a concentric pattern on an optical record carrier, said information being randomized with a randomized number generated by a maximum-length generator having a first predetermined number of stages with respect to an initial value generated and renewed at least one time per a round of said recording track based on said sector information, said method comprising the steps of: reproducing said sector information and scrambled information from said sector; reproducing said initial value based on said reproduced sector information; reproducing said randomized number based on said reproduced initial value utilizing the same maximum-length sequence generation method as that used for recording; and descrambling said reproduced scrambled information with said reproduced randomized number.
Claim 23
Dependent Claim
155 words
A reproducing method for reproducing an information from a recording track having a plurality of sectors, wherein said information is recorded together with a sector information indicative of the locations of corresponding sectors recording said information, on in either of a spiral and a concentric pattern on an optical record carrier, said information being randomized with a randomized number generated by a maximum-length generator having a first predetermined number of stages with respect to an initial value generated and renewed at least one time per a round of said recording track based on said sector information, said method comprising the steps of: reproducing said sector information and scrambled information from said sector; reproducing said initial value based on said reproduced sector information; reproducing said randomized number based on said reproduced initial value utilizing the same maximum-length sequence generation method as that used for recording; and descrambling said reproduced scrambled information with said reproduced randomized number.
Claim 24
Dependent Claim
28 words
A reproducing method as claimed in claim 19, wherein said sector information is renewed at an interval of a series of a second predetermined number of said sectors.
Claim 25
Dependent Claim
20 words
A reproducing method as claimed in claim 20, wherein said second predetermined number is equal to or greater than eight.
Claim 26
Dependent Claim
15 words
A reproducing method as claimed in claim 20, wherein said second predetermined number is sixteen.
Claim 27
Dependent Claim
20 words
A recording method as claimed in claim 19, wherein said first predetermined number is equal to or greater than fifteen.
Claim 28
Dependent Claim
169 words
A reproducing apparatus for reproducing an information from a recording track having a plurality of sectors, wherein said information is recorded together with a sector information indicative of the locations of corresponding sectors recording said information, in either of a spiral and a concentric pattern on an optical record carrier, said information being randomized with a randomized number generated by a maximum-length generator having a first predetermined number of stages with respect to an initial value generated and renewed at least one time per a round of said recording track based on said sector information, said apparatus comprising: a reproducing means for reproducing said sector information and scrambled information from said sector; an initial value reproducing means for reproducing said initial value based on said reproduced sector information; a reproducing means for reproducing said randomized number based on said reproduced initial value utilizing the same maximum-length sequence generation method as that used for recording; and a descrambling means for descrambling said reproduced scrambled information with said reproduced randomized number.
Claim 29
Dependent Claim
169 words
A reproducing apparatus for reproducing an information from a recording track having a plurality of sectors, wherein said information is recorded together with a sector information indicative of the locations of corresponding sectors recording said information, in either of a spiral and a concentric pattern on an optical record carrier, said information being randomized with a randomized number generated by a maximum-length generator having a first predetermined number of stages with respect to an initial value generated and renewed at least one time per a round of said recording track based on said sector information, said apparatus comprising: a reproducing means for reproducing said sector information and scrambled information from said sector; an initial value reproducing means for reproducing said initial value based on said reproduced sector information; a reproducing means for reproducing said randomized number based on said reproduced initial value utilizing the same maximum-length sequence generation method as that used for recording; and a descrambling means for descrambling said reproduced scrambled information with said reproduced randomized number.
Claim 30
Dependent Claim
28 words
A reproducing apparatus as claimed in claim 24, wherein said sector information is renewed at an interval of a series of a second predetermined number of said sectors.
Claim 31
Dependent Claim
20 words
A reproducing apparatus as claimed in claim 25, wherein said second predetermined number is equal to or greater than eight.
Claim 32
Dependent Claim
15 words
A reproducing apparatus as claimed in claim 25, wherein said second predetermined number is sixteen.
Claim 33
Dependent Claim
22 words
A reproducing apparatus as claimed in claim 20, wherein said first predetermined number of stage is equal to or greater than fifteen.
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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) | 2001-03-23 | 2001-09-22 | 2002-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-23 | 2005-09-22 | 2006-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-23 | 2009-09-22 | 2010-03-24 | $7700.00 | Window Closed / Lapsed |