EP0342748A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Recording system as well as record carrier and recording apparatus for use in the system
Assignee: Koninklijke Philips NV
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Filing: 1989-05-12
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Granted: —
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Expires: 2009-05-12
Abstract
Abstract A recording system (1) for recording information is revealed. The system comprises a record carrier (2) of an inscribable type and a recording apparatus (3). The record carrier is preconditioned with a control-information pattern which indicates for which type(s) of information the relevant record carrier is intended. The recording apparatus comprises means (11, 13) for determining the type of information presented for recording, means (12; 10a, 82, 83) for reading the control information represented by the control-information structure, and control means (11) for inhibiting recording if the detected information does not correspond to the control information being read.
Inventors
- 👤 Gerardus Cornelis Petrus Lokhoff
- 👤 Rudolf Roth
- 👤 Wilhelmus Petrus Maria Raaijmakers
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 01:53
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/00086; G11B20/00094; G11B7/00; G11B19/00; G11B19/20; G11B19/24; G11B19/247; G11B20/00572; G11B20/00586; G11B20/0071; G11B20/10; G11B20/12; G11B23/00; G11B23/28; G11B27/00; G11B27/02; G11B27/022; G11B27/031; G11B27/10; G11B27/11; G11B27/19; G11B27/24; G11B27/28; G11B27/30; G11B27/3027; G11B27/3063; G11B27/32; G11B27/327; G11B27/329; G11B7/002; G11B7/0037; G11B7/007; G11B7/00736; G11B7/24; G11B7/2407; G11B7/24073; G11B7/24082; G11B7/28; G11B20/1217; G11B2220/00; G11B2220/20; G11B2220/21; G11B2220/213; G11B2220/215; G11B2220/216; G11B2220/25; G11B2220/2525; G11B2220/2537; G11B2220/2545; G11B2220/60; G11B2220/65
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
183 words
A recording system for recording information, comprising a record carrier of an inscribable type and a recording apparatus comprising write means for recording applied information on the record carrier, in which the record carrier is preconditioned with a control-information pattern indicating for which type(s) of information the relevant record carrier is intended, and the recording apparatus comprises means for reading the control information represented by the control-information pattern, test means for detecting the type of information applied, and control means for controlling the recording process in such a way that the applied information is recorded only if the detected type of information corresponds to a type indicated by the control information being read, characterized in that the record carrier is provided with a preformed or prerecorded servo track, the control-information pattern taking the form of a preformed or prerecorded track modulation of the servo track, in that the recording apparatus comprises means for scanning the servo track, and in that the read means include means for detecting the track modulation during scanning and for deriving the control information from the detected track modulation.
Claim 2
Dependent Claim
183 words
A recording system for recording information, comprising a record carrier of an inscribable type and a recording apparatus comprising write means for recording applied information on the record carrier, in which the record carrier is preconditioned with a control-information pattern indicating for which type(s) of information the relevant record carrier is intended, and the recording apparatus comprises means for reading the control information represented by the control-information pattern, test means for detecting the type of information applied, and control means for controlling the recording process in such a way that the applied information is recorded only if the detected type of information corresponds to a type indicated by the control information being read, characterized in that the record carrier is provided with a preformed or prerecorded servo track, the control-information pattern taking the form of a preformed or prerecorded track modulation of the servo track, in that the recording apparatus comprises means for scanning the servo track, and in that the read means include means for detecting the track modulation during scanning and for deriving the control information from the detected track modulation.
Claim 3
Dependent Claim
51 words
A system as claimed in Claim 1, characterized in that the recording apparatus comprises at least one input stage for receiving the information to be recorded, and in that the test means are adapted to detect the type of applied information on the basis of the type of input stage used.
Claim 4
Dependent Claim
60 words
A system as claimed in Claim 2, characterized in that the recording apparatus comprises at least two input stages for receiving the information of two different types, and selection means for selecting one of the input stages, and in that the test means are adapted to detect the type of: applied information on the basis of the selected input stage.
Claim 5
Dependent Claim
29 words
A system as claimed in Claim 1 to 3, characterized in that the record carrier is of an erasable type, the preconditioning control-information pattern being of a non-erasable type.
Claim 6
Dependent Claim
34 words
A system as claimed in Claim 1, characterized in that the control information pattern is also accommodated in a of the servo-track portion not being the servo-track portion intended for recording the aplied information.
Claim 7
Dependent Claim
53 words
A system as claimed in Claim 1, characterized in that the recording apparatus comprises an optical scanning device for scanning the servo track with a radiation beam for the purpose of recording, the read means including a radiation-sensitive detector for detecting the radiation beam which is modulated by the track modulation during scanning.
Claim 8
Dependent Claim
118 words
A system as claimed in Claim 6, characterized in that the control information represented by the track modulation comprises a position-information signal which indicates the position of the relevant track portion relative to the beginning of the servo track, in that the recording apparatus comprises conversion means for converting the applied information, prior to recording, into a signal complying with the CD standard, the control means being adapted to add subcode information to the information to be recorded, depending on the position information being read, the control means being adapted to supply the subcode information exclusively if the detected type of information presented for recording corresponds to one of the types indicated by the control information being read.
Claim 9
Dependent Claim
52 words
A system as claimed in Claim 6 or 7, characterized in that the control information represented by the track modulation comprises position-information signals and synchronisation signals, which synchronisation signals can be distinguished from the position-information signals, the type of synchronisation signal indicating the permissible type(s) of information for the relevant record carrier.
Claim 10
Dependent Claim
30 words
A system as claimed in Claim 8, characterized in that the position information signal is "biphase-mark" modulated, the synchronisation signals having a signal waveform which differs from a "biphase-mark" modulation.
Claim 11
Dependent Claim
30 words
A system as claimed in Claim 8 or 9, characterized in that the track modulation is a radial track undulation whose frequency is modulated in conformity with the control signal.
Claim 12
Dependent Claim
54 words
A system as claimed in Claim 1, 5 and any one of the Claims 6 to 10, characterized in that the servo track comprises a lead-in portion in which an information signal in conformity with the CD standard is recorded as a preformed information pattern, said control information being included in the subcode-Q channel.
Claim 13
Dependent Claim
17 words
A record carrier for use in the system as claimed in any one of the preceding Claims.
Claim 14
Dependent Claim
19 words
A recording apparatus for use in the system as claimed in any one of the Claims 1 to 11.
References Cited (Backward Citations)
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