EP0326437A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Optical disk recording and reproducing device
Assignee: Sharp Corp
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Filing: 1989-01-30
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Granted: —
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Expires: 2009-01-30
Abstract
Abstract A optical disk recording and reproducing device capable of doing recording and reproducing to or from an optical disk is disclosed, wherein continuous signals representing continuous analog information such as audio- and video-information and discrete signals representing discrete data-information such as numerical data including program codes or data in characters are recorded dividedly in different recording regions provided on the optical disk of such as erasable type or write once-type, and for access to either region the optical disk is rotated at a given linear or rotary angular speed under control by a disk rotation control device so as to simplify the control of rotation of the optical disk.
Inventors
- 👤 Shigeo Terashima
- 👤 Kentaro Tsuji
- 👤 Hiroshi Fuji
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 03:07
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/02; G11B27/031; G11B27/034; G11B19/00; G11B19/02; G11B19/20; G11B19/28; G11B27/10; G11B27/102; G11B27/105; G11B27/19; G11B27/28; G11B27/32; G11B27/327; G11B27/329; G11B7/00; G11B7/002; G11B7/0037; G11B7/007; G11B2220/00; G11B2220/20; G11B2220/21; G11B2220/215; G11B2220/216; G11B2220/218; G11B2220/25; G11B2220/2525; G11B2220/2537; G11B2220/2545
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
84 words
An optical disk recording and reproducing device capable of performing recording and reproducing of information to or from an optical disk, wherein said optical disk recording/reproducing device is so arranged that continuous signals representing continuous analogue information and discrete signals representing discrete data-information are arranged separately in different respective recording regions on said optical disk, and includes a disk rotation control device for rotating said optical disk at a given linear speed or rotary angular speed when either of said recording regions is accessed.
Claim 2
Dependent Claim
84 words
An optical disk recording and reproducing device capable of performing recording and reproducing of information to or from an optical disk, wherein said optical disk recording/reproducing device is so arranged that continuous signals representing continuous analogue information and discrete signals representing discrete data-information are arranged separately in different respective recording regions on said optical disk, and includes a disk rotation control device for rotating said optical disk at a given linear speed or rotary angular speed when either of said recording regions is accessed.
Claim 3
Dependent Claim
36 words
An optical disk recording and reproducing device according to claim 1, wherein said device is arranged to be capable of performing recording and reproducing of signals to or from said optical disk of the erasable type.
Claim 4
Dependent Claim
36 words
An optical disk recording and reproducing device according to claim 1, wherein said device is arranged to be capable of performing recording and reproducing of signals to or from said optical disk of the write once-type.
Claim 5
Dependent Claim
47 words
An optical disk recording and reproducing device according to any preceding claim, wherein said continuous signals representing continuous analog information and said discrete signals representing discrete data-information are recorded in tracks on the inner peripheral side and on the outer peripheral side of said optical disk respectively.
Claim 6
Dependent Claim
24 words
An optical disk recording and reproducing device according to any preceding claim, wherein said continuous signals representing continuous analog information can be recorded data-compressed.
Claim 7
Dependent Claim
29 words
An optical disk recording and reproducing device according to any preceding claim, wherein said optical disk is provided with a directory for controlling the items of information recorded therein.
Claim 8
Dependent Claim
38 words
An optical disk recording and reproducing device according to any preceding claim, wherein recording and reproducing of signals can be performed by the so-called pre-pit method to or from said optical disk with preformed pits in said tracks.
Claim 9
Dependent Claim
26 words
An optical disk recording and reproducing device according to any preceding claim, wherein recording and reproducing of signals can be performed by the so-called soft-formatting method.
Claim 10
Dependent Claim
72 words
An optical disk recording and reproducing device according to any of claims 1 to 6, wherein said optical disk has pits preformed in said tracks only in part of said recording region so that recording and reproducing of said continuous signals representing continuous analog information can be performed made by the so-called pre-pit method, while recording and reproducing of discrete signals representing discrete data-information can be performed by the so-called soft-formatting method.
Claim 11
Dependent Claim
49 words
Apparatus for recording and/or reproducing information on an optical recording medium, such as an optical disk, the apparatus being arranged to operate so that first signals representing continuous analogue information and second signals representing discrete data information are arranged in respective first and second separate portions of the medium.
Claim 12
Dependent Claim
49 words
Apparatus for recording and/or reproducing information on an optical recording medium, such as an optical disk, the apparatus being arranged to operate so that first signals representing continuous analogue information and second signals representing discrete data information are arranged in respective first and second separate portions of the medium.
References Cited (Backward Citations)
No citation records indexed.
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