Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system

An optical disc recording and optical disc technology, which is applied to optical discs, optical disc recording and reproducing equipment, recording, reproducing and deleting data on optical discs, and the fields of information processing systems, and can solve the problems of cryptographic robustness, extending key length, etc.

Inactive Publication Date: 2006-09-13
PANASONIC CORP
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the conventionally proposed key management method of recording the decryption key at the header of the sector, there is a problem that only the decryption key having a predetermined length size (the size of the decryption key area) or less is recorded. key, the length of the key cannot be extended for the purpose of improving the robustness of the cipher in the future

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system
  • Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system
  • Optical disk, optical disk recording and reproducing apparatus, method for recording, reproducing and deleting data on optical disk, and information processing system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0158] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

[0159] first preferred embodiment

[0160] figure 1 A plan view showing the data recording area of ​​the recording type optical disc 100 according to the first preferred embodiment of the present invention. This recording type optical disc 100 is a recording medium capable of recording digital data, including write-once non-rewritable optical discs and rewritable optical discs.

[0161] see figure 1 , 101 represents the lead-in area, which is used to record the management information of the optical disc 100 therein, and 102 represents the user data area, which is used to record digital data requiring copyright protection, such as (a) including at least image data (comprising still picture images and AV data content of one of dynamic picture image) such as movies etc. and language sound data such as music etc.; and (b) computer software. 103 denotes...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A recording type optical disk on which data is recordable includes a data recording and reproducing area for recording data therein and reproducing data therefrom, and a read-only disk identification information area for recording disk identification information for identifying the optical disk therein. In the optical disk, the disk identification information is formed by removing a reflection film that is formed on the optical disk in a strip shape. The disk identification information includes an inherent disk identifier for each optical disk, and the data recording and reproducing area includes an area for recording encrypted data therein. The encrypted data is encrypted by using information including the disk identification information for identifying the optical disk as a key.

Description

technical field [0001] The present invention relates to an optical disc, an optical disc recording and reproducing apparatus, a method of recording, reproducing and deleting data on an optical disc, and an information processing system. In particular, the present invention relates to an optical disc, an optical disc recording and reproducing apparatus, a method for recording, reproducing and erasing data on an optical disc, and an information processing system, which can prevent data transfer from one optical disc to another recording medium such as an optical disc of another recording type. etc. carry out illegal digital duplication, on the original optical disk, for example, data including AV data (audio and video data) such as movie image data and music sound data with copyright protection are recorded. Background technique [0002] Optical discs are superior to conventional magnetic tape media in terms of random access, and have the advantage of reducing deterioration in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G11B7/00G11B7/004G11B7/007G11B7/24G11B20/10G11B20/12G06F12/14G11B19/12G11B20/00G11B23/28G11B23/34G11B23/36
Inventor 永井隆弘石原秀志高木裕司弓场隆司东海林卫大嶋光昭大原俊次伊藤基志石田隆中村敦史谢花正司中田浩平
Owner PANASONIC CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com