← Back to Patent Explorer
EP0506103A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Data recording method

Assignee: Sony Corp
•
Filing: 1992-03-27
•
Granted: —
•
Expires: 2012-03-27
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A data recording method by which data of a compact disk can be recorded well onto a magneto-optic disk of the ISO format. Data of a compact disk are recorded onto a 5-inch magneto-optic disk (ISO format) of the 512 bytes/sector type of the CS system. The sector size of the magneto-optic disk is 610 bytes. Data included in one sector (98 frames) of the compact disk are 2, 352 bytes and subcodings of P to W are 96 bytes. Data for one sector are divided into data groups A to H to construct a data format. A CRC is added to each data group. Further, a parity 2 (Reed-Solomon code) is added. Data (3, 050 bytes) for one sector of the compact disk to which the CRCs, parities and so forth are added are recorded across 5 sectors of the magneto-optic disk. Data of a compact disk can be recorded onto a magneto-optic disk having a different sector size, and since error correction codes or error detection codes are added using the remaining area, the data can be recorded with a high degree of accuracy.

Inventors

  • 👤 Sako Yoichiro

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 10:17
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/18; G11B20/1833; G11B20/12; G11B20/1262; G11B20/1217; G11B2020/1087; G11B2020/10879; G11B2220/00; G11B2220/20; G11B2220/25; G11B2220/2525; G11B2220/2537; G11B2220/2545; G11B27/00; G11B27/02; G11B27/031; G11B27/034

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 132 words
A data recording method for recording. onto a record medium specified for recording data of a sector size A thereon. data of a different sector size B, comprising the steps of: adding, in order to record mB data into a record unit area of the record medium consisting of n sectors, n being an integral number equal to or greater than 1, m being an integral number which is equal to or greater than 1 and satisfies the relationship of nA > mB, at least an error correction code or an error detection code to the mB data using the region of nA - mB of the record unit area of the record medium; and recording the resultant data into the record unit area of the n sectors of the record medium.
Claim 2
Dependent Claim 23 words
A data recording method according to claim 1, wherein data of the sector size A are user data of units of 512 bytes.
Claim 3
Dependent Claim 25 words
A data recording method according to claim 2, wherein the data of the sector size B are data for 98 frames of a compact disk.
Claim 4
Dependent Claim 46 words
A data recording method according to claim 3, wherein user data in the data for 98 frames of the compact disk are divided into a plurality of data groups, and an error detection code or codes are added to data of each of the data groups.
Claim 5
Dependent Claim 42 words
A data recording method according to claim 4. wherein the data of the plurality of data groups are divided depending upon whether the data belong to an odd-numbered channel or an even-numbered channel and/or the data are odd-numbered data or even-numbered data.
Claim 6
Dependent Claim 52 words
A data recording method according to claim 5, wherein the plurality of data groups are divided into an odd-numbered data group or groups and an even-numbered data group or groups. and a parity or parities for error correction are added between the odd-numbered group or groups and the even-numbered group or groups.
Claim 7
Dependent Claim 139 words
A data recording method for recording, onto a record medium specified for recording data of a sector size A thereon, data of a different sector size B, comprising the steps of: dividing, in order to record mB data into a record unit area of the record medium consisting of n sectors, n being an integral number equal to or greater than 1, m being an integral number which is equal to or greater than 1 and satisfies the relationship of nA > mB, the mB data into a plurality of data groups: adding at least an error detection code to each of the data group using the region of nA - mB of the record unit area of the record medium; and recording the resultant data into the record unit area of the n sectors of the record medium.
Claim 8
Dependent Claim 42 words
A data recording method according to claim 7, wherein the data of the plurality of data groups are divided depending upon whether. the data belong to an odd-numbered channel or an even-numbered channel and/or the data are odd-numbered data or even-numbered data.
Claim 9
Dependent Claim 52 words
A data recording method according to claim 8, wherein the plurality of data groups are divided into an odd-numbered data group or groups and an even-numbered data group or groups. and a parity or parities for error correction are added between the odd-numbered group or groups and the even-numbered group or groups.

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