EP0535703A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Read only digital audio information recording medium and digital dubbing system therefor
Assignee: Sanyo Electric Co Ltd
•
Filing: 1992-10-02
•
Granted: —
•
Expires: 2012-10-02
Abstract
Abstract A read only disc according to the present invention has a spiral recording track formed on the surface thereof. The recording track includes a plurality of record unit blocks formed continuously by an optical recording method, wherein each record unit block includes a dubbing permitted area and a dubbing inhibited area. Digital audio information having data compressed is recorded in the dubbing permitted area. On the other hand, display data associated with the digital audio information is recorded in the dubbing inhibited area. Thus, digital dubbing of digital audio information can be carried out and dubbing of display data is prevented to ensure dominance of the read only disc as a master software.
Inventors
- 👤 Masato Fuma
- 👤 Nagatoshi Sugihara
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 15:28
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/28; G11B20/00; G11B20/00086; G11B20/00681; G11B20/00688; G11B20/00007; G11B20/00166; G11B20/10; G11B20/10527; G11B27/00; G11B27/02; G11B27/031; G11B27/034; G11B27/10; G11B27/34; G11B2220/00; G11B2220/20; G11B2220/21; G11B2220/211; G11B2220/213; G11B2220/25; G11B2220/2525; G11B2220/2537; G11B2220/2545
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
66 words
A read only digital audio information recording medium, having a spiral recording track formed on the surface thereof, wherein said recording track includes a plurality of record unit blocks formed continuously, wherein each of said record unit blocks comprises a dubbing permitted area where digital audio information is recorded, and a dubbing inhibited area where associating information in synchronization with said digital audio information is recorded.
Claim 2
Dependent Claim
66 words
A read only digital audio information recording medium, having a spiral recording track formed on the surface thereof, wherein said recording track includes a plurality of record unit blocks formed continuously, wherein each of said record unit blocks comprises a dubbing permitted area where digital audio information is recorded, and a dubbing inhibited area where associating information in synchronization with said digital audio information is recorded.
Claim 3
Dependent Claim
28 words
The read only digital audio information recording medium according to claim 1, wherein said spiral recording track comprises a plurality of optical pits formed by optical recording method.
Claim 4
Dependent Claim
26 words
The read only digital audio information recording medium according to claim 1, wherein said associating information comprises display data in synchronization with said digital audio information.
Claim 5
Dependent Claim
23 words
The read only digital audio information recording medium according to claim 1, wherein said digital audio information comprises audio information having data compressed.
Claim 6
Dependent Claim
100 words
A digital dubbing system comprising: reproducing means for intermittently reproducing a read only digital audio information recording medium having a spiral recording track which includes a plurality of record unit blocks formed continuously, each of said record unit blocks comprising a dubbing permitted area where compressed digital audio information is recorded and a dubbing inhibited area where associating information is recorded, to intermittently supply the reproduced compressed digital audio information, and recording means for intermittently recording record unit blocks each including said reproduced compressed digital audio information with fixed information added, onto a digital audio information recording and reproducing medium.
Claim 7
Dependent Claim
100 words
A digital dubbing system comprising: reproducing means for intermittently reproducing a read only digital audio information recording medium having a spiral recording track which includes a plurality of record unit blocks formed continuously, each of said record unit blocks comprising a dubbing permitted area where compressed digital audio information is recorded and a dubbing inhibited area where associating information is recorded, to intermittently supply the reproduced compressed digital audio information, and recording means for intermittently recording record unit blocks each including said reproduced compressed digital audio information with fixed information added, onto a digital audio information recording and reproducing medium.
Claim 8
Dependent Claim
102 words
A high speed digital dubbing system comprising: reproducing means for continuously reproducing a read only digital audio information recording medium having a spiral recording track which includes a plurality of record unit blocks formed continuously, each of said record unit blocks comprising a dubbing permitted area where compressed digital audio information is recorded and a dubbing inhibited area where associating information is recorded, to continuously supply the reproduced compressed digital audio information, and recording means for continuously recording record unit blocks each including said reproduced compressed digital audio information with fixed information added, onto a digital audio information recording and reproducing medium.
Claim 9
Dependent Claim
102 words
A high speed digital dubbing system comprising: reproducing means for continuously reproducing a read only digital audio information recording medium having a spiral recording track which includes a plurality of record unit blocks formed continuously, each of said record unit blocks comprising a dubbing permitted area where compressed digital audio information is recorded and a dubbing inhibited area where associating information is recorded, to continuously supply the reproduced compressed digital audio information, and recording means for continuously recording record unit blocks each including said reproduced compressed digital audio information with fixed information added, onto a digital audio information recording and reproducing medium.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.