§
Luxuse
Patent Intelligence
Sign In
← Back to Patent Explorer
EP0655739A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Information signal recording method

Assignee: Victor Company of Japan Ltd
•
Filing: 1994-11-29
•
Granted: —
•
Expires: 2014-11-29
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract When information signals are recorded on an information signal recording medium formed with circular information signal tracks, the information signals are recorded after scrambled with scrambling signals of cyclic codes. The period at which the scrambling signal makes a round is determined longer than a time length of an information signal quantity recorded on the maximum recording capacity (e.g., the outermost tracks), or a part of the scrambling signals are used repeatedly. The information signal recording method can remove the correlation between the adjacent tracks, and thereby to enable a stable tracking control.

Inventors

  • 👤 Kazunari Matsui

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-29 23:39
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/00086; G11B20/0021; G11B20/00485; G11B20/00492; G11B20/00507; G11B20/10; G11B20/22; G11B7/00; G11B7/004; G11B7/0045; G11B7/007; G11B7/013; H; H03; H03M; H03M13/00; H03M13/03; H03M13/05; H03M13/13; H03M13/15; G11B7/08; G11B7/09; G11B7/0901

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 72 words
A method of recording information signals of binary digital signal train on an information signal recording medium formed with circular information signal tracks by scrambling the information signals with scrambling signals of cyclic codes, wherein a period at which the scrambling signals make a round is determined longer than a time length of an information signal quantity recorded on a predetermined portion at the information signal track of the maximum recording capacity.
Claim 2
Dependent Claim 100 words
The method of recording information signals of claim 1, wherein the information signals are scrambled by obtaining exclusive OR of the information signals and the cyclic codes composed of (2 x - 1) units of binary numbers; and further a degree x of the cyclic codes is determined as follows: x > log₂ (8 . B sect . S max + 1) where B sect denotes the number of bytes of the information signals recorded in one sector of the recording medium, and S max denotes the number of sectors included in an outermost circumferential track of the recording medium.
Claim 3
Independent Claim 47 words
A method of recording information signals of binary digital signal train to an information signal recording medium formed with circular information signal tracks by scrambling the information signals with scrambling signals of cyclic codes, wherein a part of the scrambling signals is used repeatedly under overlapped conditions.
Claim 4
Dependent Claim 123 words
The method of recording information signals of claim 3, wherein the information signals are scrambled by obtaining exclusive OR of the information signals and the cyclic codes composed of (2 x - 1) units of binary numbers; and further a degree x of the cyclic codes is determined as follows: x > log₂ {(8 . B sect . (1 + S max / S min ) + 1} where B sect denotes the number of bytes of the information signals recorded in one sector of the recording medium, S max denotes the number of sectors included in an outermost circumferential track of the recording medium, and S min denotes the number of sectors included in an innermost circumferential track of the recording medium.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag