Patent EP0234709A2 successfully refreshed from Google Patents.
EP0234709A2
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Optical disk duplicating apparatus and duplicated optical disk
Assignee: Panasonic Holdings Corp
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Filing: 1987-01-20
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Granted: —
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Expires: 2007-01-20
Abstract
Abstract An optical disk duplicating apparatus comprises reproducing means (3) for reproducing user's data recorded on a first optical disk (4), adding means (2) for adding sector data identification information (l0, 25) indicative of the state of using sectors (Sl - S6) in redording tracks on the first optical disk (4) to the reproduced user's data, recording means (7) for recording the user's data on a second optical disk, and transfer means (l, 5, 8) for transferring the user's data and the sector data identification information (l0, 25) to the recording means (7). The optical disk duplicating apparatus determines whether each of the sectors (Sl - S6) in the first optical disk (4) has data properly recorded therein, a defective sector identifier portion, a defective data field portion, or no signal recorded therein, by using the sector data identification information (l0, 25) and controls a signal supplied to the recording means (7), thereby producing duplicated sectors (Sl - S6) in a manner such that the sectors (Sl - S6) in the first optical disk (4) correspond respectively to the sectors (Sl - S6) in the second optical disk on the sector-to-sector basis. With this optical disk duplicating apparatus, it is possible to produce a duplicate optical disk which has sector ID portions and data field portions formed in the shape of irregular pits throughout the whole disk surface and thereby makes it possible to achieve stable following and retrieval of recording tracks.
Inventors
- 👤 Isao Satoh
- 👤 Yoshihisa Fukushima
- 👤 Makoto Ichinose
- 👤 Yuzuru Kuroki
- 👤 Yuji Takagi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 05:18
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/28; G11B20/00; G11B20/10; G11B20/12; G11B20/1217; G11B20/18; G11B20/1806; G11B20/1813; G11B27/00; G11B27/02; G11B27/031; G11B27/034; G11B2220/00; G11B2220/20
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
120 words
An optical disk duplicating apparatus comprising: means for reproducing data from a first optical disk (4) comprising a plurality of sectors (Sl - S6) each thereof having the data recorded therein; means (2) for adding the sector data identification information (l0, 25) to the reproduced data; recording means (7) for recording data on a second optical disk; recording control means (6) for controlling a recording operation of said recording means; and transfer means (l, 5, 8) for transferring the reproduced data and the sector data identification information (l0, 25) to said recording control means (6), wherein said recording control means (6) controls sector recording on said second optical disk on the basis of said sector data identification information (l0, 25).
Claim 2
Dependent Claim
120 words
An optical disk duplicating apparatus comprising: means for reproducing data from a first optical disk (4) comprising a plurality of sectors (Sl - S6) each thereof having the data recorded therein; means (2) for adding the sector data identification information (l0, 25) to the reproduced data; recording means (7) for recording data on a second optical disk; recording control means (6) for controlling a recording operation of said recording means; and transfer means (l, 5, 8) for transferring the reproduced data and the sector data identification information (l0, 25) to said recording control means (6), wherein said recording control means (6) controls sector recording on said second optical disk on the basis of said sector data identification information (l0, 25).
Claim 3
Independent Claim
70 words
An apparatus according to Claim l, wherein, in said first optical disk (4), the sector data identification information (l0, 25) includes a data recorded sector flag indicating that data are recorded in an associated sector, a marking sector flag indicating that a marking signal indicative of a defective sector is recorded in an associated sector, and an unrecorded sector flag indicating that no data are recorded in an associated sector.
Claim 4
Independent Claim
75 words
An apparatus according to Claim l, wherein said recording control means (6) checks the sector data identification information (l0, 25), and controls, in case of the data recorded sector flag, to record on said second optical disk a data modulation signal obtained by adding an error correction mark to user's data and then modulating the resultant data, and, in case of the marking sector flag, to record the marking signal on said second optical disk.
Claim 5
Independent Claim
107 words
An apparatus according to Claim l, wherein said recording control means (6) includes sector identifier signal reproducing means (l8) for reproducing a sector identifier signal (l04) and outputting an address signal (ll7), modulating means (l4) for generating a data modulation signal (ll2) by adding an error correction mark to user's data and then modulating the resultant data, and sector synchronizing means (l9) for operating said modulating means (l4) in synchronism with the address information (ll7) in the sector identifier signal (l04) generated by said sector identifier signal generating means (8), thereby controlling to generate the data modulation signal (ll2) in synchronism with the sector identifier signal (l04).
Claim 6
Independent Claim
92 words
An apparatus according to Claim l, wherein said recording control means (6) includes sector identifier signal reproducing means (l8) for reproducing a sector identifier signal (l04) and outputting an address signal (ll7), marking signal generating means (20) for generating a marking signal, and sector synchronizing means (l9) for operating said marking signal generating means (20) in synchronism with the address information (ll7) in the sector identifier signal generated by said sector identifier signal generating means (l8), thereby controlling to generate the marking signal (ll3) in synchronism with the sector identifier signal (l04).
Claim 7
Dependent Claim
33 words
An apparatus according to Claim 4, wherein said sector identifier signal generating means (8) is constructed to generate the sector identifier signal (l04) in synchronism with the rotation of said second optical disk.
Claim 8
Dependent Claim
33 words
An apparatus according to Claim 5, wherein said sector identifier signal generating means (8) is constructed to generate the sector identifier signal (l04) in synchronism with the rotation of said second optical disk.
Claim 9
Dependent Claim
85 words
An apparatus according to Claim 3, wherein said recording control means (6) includes selecting means (l5) for selecting one of the data modulation signal (ll2), the marking signal (ll3) and a non-modulation signal (ll4) in accordance with the sector data identification information (l0, 25) and further includes signal combining means (l6) for combining an output signal of said selecting means (l5) with the sector identifier signal (l04), thereby controlling to record an output signal of said signal combining means (l6) on said second optical disk.
Claim 10
Dependent Claim
137 words
A duplicate optical disk formed as a second optical disk obtained by duplicating a first optical disk (4) which comprises a sector (Sl, S2, S4) containing data recorded therein, a sector identifier portion defective sector (S5) having a marking signal (22) recorded in an unrecorded data field portion thereof, a data field portion defective sector (S3) having a marking signal (22) recorded to overlap a data signal (2l) in a data field portion thereof, and an unrecorded sector (S6) having no signal recorded in a data field portion thereof; wherein said second optical disk comprises a sector (Sl, S2, S4) containing the data recorded therein, a sector (S3, S5) having a marking signal (22) recorded in an unrecorded data field portion thereof, and an unrecorded sector (S6) having no signal recorded in a data field portion thereof.
Claim 11
Dependent Claim
137 words
A duplicate optical disk formed as a second optical disk obtained by duplicating a first optical disk (4) which comprises a sector (Sl, S2, S4) containing data recorded therein, a sector identifier portion defective sector (S5) having a marking signal (22) recorded in an unrecorded data field portion thereof, a data field portion defective sector (S3) having a marking signal (22) recorded to overlap a data signal (2l) in a data field portion thereof, and an unrecorded sector (S6) having no signal recorded in a data field portion thereof; wherein said second optical disk comprises a sector (Sl, S2, S4) containing the data recorded therein, a sector (S3, S5) having a marking signal (22) recorded in an unrecorded data field portion thereof, and an unrecorded sector (S6) having no signal recorded in a data field portion thereof.
Claim 12
Dependent Claim
185 words
l0. A duplicate optical disk formed as a second optical disk obtained by duplicating a first optical disk (4) on the basis of sector-to-sector correspondence with said first optical disk (4) which first optical disk (4) comprises a sector (Sl, S2, S4) containing data recorded therein, a sector identifier portion defective sector (S5) having a marking signal (22) recorded in an unrecorded data field portion thereof, a data field portion defective sector (S3) having a marking signal (22) recorded to overlap a data signal (2l) in a data field portion thereof, and an unrecorded sector (S6) having no signal recorded in a data field portion thereof; wherein each of sectors in said second optical disk has a data field portion recorded therein, which data field portion contains data (24), the data identification information (25), and an error correction detection mark (26) produced with respect to said data (24) and said data identification information (25), whereby said data identification information (25) makes it possible to make a distinction between a data recorded sector (Sl, S2, S4), a marking sector (S3, S5) and an unrecorded sector (S6).
Claim 13
Dependent Claim
185 words
l0. A duplicate optical disk formed as a second optical disk obtained by duplicating a first optical disk (4) on the basis of sector-to-sector correspondence with said first optical disk (4) which first optical disk (4) comprises a sector (Sl, S2, S4) containing data recorded therein, a sector identifier portion defective sector (S5) having a marking signal (22) recorded in an unrecorded data field portion thereof, a data field portion defective sector (S3) having a marking signal (22) recorded to overlap a data signal (2l) in a data field portion thereof, and an unrecorded sector (S6) having no signal recorded in a data field portion thereof; wherein each of sectors in said second optical disk has a data field portion recorded therein, which data field portion contains data (24), the data identification information (25), and an error correction detection mark (26) produced with respect to said data (24) and said data identification information (25), whereby said data identification information (25) makes it possible to make a distinction between a data recorded sector (Sl, S2, S4), a marking sector (S3, S5) and an unrecorded sector (S6).
Claim 14
Dependent Claim
27 words
A duplicate optical disk according to Claim l0, wherein said first optical disk (4) is constructed so that user is allowed to record user's data (24) therein.
Claim 15
Dependent Claim
36 words
A duplicate optical disk according to Claim l0, wherein said second optical disk is constructed as an optical disk for exclusive use in reproduction by having a record formed thereon with a structure of irregular pits.
References Cited (Backward Citations)
No citation records indexed.
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