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1. CN1135804 - Data recording method data recording apparatus, disc recording medium, computer system and data copying preventing method

Office China
Application Number 95190911.8
Application Date 08.08.1995
Publication Number 1135804
Publication Date 13.11.1996
Grant Number 1122271
Grant Date 24.09.2003
Publication Kind C
IPC
G11B 20/12
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
10Digital recording or reproducing
12Formatting, e.g. arrangement of data block or words on the record carriers
G11B 20/10
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
10Digital recording or reproducing
CPC
G11B 20/00101
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
00094involving measures which result in a restriction to authorised record carriers
00101the original record carrier having a larger recording capacity than the potential target medium
G06F 2211/007
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
2211Indexing scheme relating to details of data-processing equipment not covered by groups G06F3/00 - G06F13/00
007Encryption, En-/decode, En-/decipher, En-/decypher, Scramble, (De-)compress
G11B 20/00086
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
00086Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
G11B 20/1252
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
10Digital recording or reproducing
12Formatting, e.g. arrangement of data block or words on the record carriers
1217on discs
1252for discontinuous data, e.g. digital information signals, computer programme data
G11B 20/1876
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
10Digital recording or reproducing
18Error detection or correction; Testing ; , e.g. of drop-outs
1876Interpolating methods
G11B 27/034
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
27Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
02Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
031Electronic editing of digitised analogue information signals, e.g. audio or video signals
034on discs
Applicants Sony Corp.
索尼公司
Inventors Nakajima Heitaro
中岛平太郎
Kitada Takaharu
北田隆治
Ogawa Hiroshi
小川博司
Agents CHENG TIANZHENG YE KAIDONG
中国专利代理(香港)有限公司
中国专利代理(香港)有限公司
Priority Data 204199/1994 08.08.1994 JP
Title
(EN) Data recording method data recording apparatus, disc recording medium, computer system and data copying preventing method
(ZH) 数据记录方法和装置、计算机系统及防止数据复制的方法
Abstract
(EN)
Recording data is recorded on a CD-ROM so as to satisfy a relationship expressed as W>/=D and W>m where W is the data length of recording data recorded on the CD-ROM, D is the data length of effective data useful for being accessed and m is the maximum recordable data length of a blank disk of a CD-ROM to which data recorded on the CD-ROM is copied. Then, when the relationship between the recording data length W and the effective data length D is expressed by W>D, said recording data contains randomly quasi-data useless for being accessed. Further, a part (e.g., path table) of the retrieval data is arranged at the end of the recording data upon recording. Thus, an illegal copy from the CD-ROM to a blank disk becomes substantially useless, thereby making it possible to effectively protect a copyright of the CD-ROM.

(ZH)

假定在CD-ROM上记录的记录数据的数据长度为W、在该记录数据中有存取意义的有效数据的长度为D、作为复制品的CD-R空白盘的最长可以记录的数据长度为m时,把上述记录数据记录到CD-ROM上使其具有W≥D、W>m的关系。而且,在记录数据长度W与有效数据长度D的关系为W>D的情况下,把无存取意义的伪数据随机地包括到上述记录数据中。进而,把一部分(例如,路径表)检索用的数据配置到记录数据的最末尾进行记录。这样,使从CD-ROM向空白盘的违法拷贝在实质上成为无效,能够有效地保护CD-ROM的版权。