Title of Invention	AN OPTICAL DISK
Abstract	Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recorded by laser trimming on a reflective film in a PCA area of an optical disk. When playing back the thus manufactured optical disk on a reproduction apparatus, the barcode data can be played back using the same optical pickup.

Title of Invention

AN OPTICAL DISK

Abstract

Disclosed is an optical disk barcode forming method wherein, as information to be barcoded, position information for piracy prevention, which is a form of ID, is coded as a barcode and is recorded by laser trimming on a reflective film in a PCA area of an optical disk. When playing back the thus manufactured optical disk on a reproduction apparatus, the barcode data can be played back using the same optical pickup.

Full Text

Documents:

« Previous Patent

Next Patent »

Patent Number

193011

Indian Patent Application Number

812/MAS/1996

PG Journal Number

30/2009

Publication Date

24-Jul-2009

Grant Date

11-Mar-2005

Date of Filing

15-May-1996

Name of Patentee

M/S. MATSUSHITA ELECTRIC INDUSTRIAL CO. LTD

Applicant Address

1006, OAZA KADOMA, KA DOMA-SHI OSAKA 571

Inventors:

#	Inventor's Name	Inventor's Address
1	YOSHIHO GOTO	201, 9-17, HIGASHINAKAHAMA 4-CHOME, JYOTO-KU, OSAKA-SHI, OSAKA 536,
2	MITSUAKI OSHIMA	115-3, MINAMITATSUMI-CHO, KATSURA, NISHIYO-KU, KYOTO-SHI, KYOTO 615,

PCT International Classification Number

G 11 B 7/00

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	7-261, 247	1995-10-09	Japan
2	8-008, 910	1996-01-23	Japan