Providing method of record carriercomprising encryption indication information, reader and recorder and method

A technology for encrypting indications and recording carriers, applied in the direction of optical recording/reproduction, digital recording/reproduction, accessories for indicating/preventing previous/unnecessary use, etc. Issues such as reduced drive performance

Inactive Publication Date: 2011-11-16
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the decryption of encrypted sectors requires a huge amount of computing work, which reduces the performance of the drive or increases the cost of the drive
Although the enormous computational effort can be reduced by the same measures above, the strength of the protection will be weakened

Method used

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  • Providing method of record carriercomprising encryption indication information, reader and recorder and method
  • Providing method of record carriercomprising encryption indication information, reader and recorder and method
  • Providing method of record carriercomprising encryption indication information, reader and recorder and method

Examples

Experimental program
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Embodiment Construction

[0028] figure 1 Shown is a block diagram of a PC 1 comprising a drive 2 (e.g. an optical drive) capable of reading data from and writing data to a record carrier 10, a CPU 3 (Central Processing Unit), a memory 4 and a graphics card 5, All these components are connected to the communication bus 6 . For the sake of simplicity, no further details of the PC 1 are shown, although of course the PCI also includes additional and other components.

[0029] figure 2 A block diagram of a drive 2 according to the invention is shown. For reading data from the record carrier 10 a reading unit 21 is provided; for writing data to the record carrier 10 a writing unit 22 is provided. When reading user data U stored in a sector S from the record carrier 10, as in image 3 Taking an optical disc each having a sector length of 2048 bytes as an example, the relevant management information M (which has n words in this embodiment) stored in the sector header H related to each sector S is shown a...

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Abstract

The present invention relates to a record carrier (10) for storing user data in sectors (S) and management information (n) associated with said sectors. In order to provide a simple, low-cost, flexible and secure copy protection of the user data when being transmitted over a communication bus (6) of a PC it is proposed according to the present invention that the management information comprises an encryption indication information (M1) indicating that the user data stored in the associated sector (S) are to be encrypted by a read-out device (2) before being transmitted over a communication bus (6).

Description

technical field [0001] The invention relates to a record carrier for storing user data in sectors and management information relating to said sectors. The invention further relates to a reading device and a corresponding reading method for reading data from a record carrier. Furthermore, the invention relates to a recording device for recording data on a record carrier and a corresponding recording method. Finally, the invention relates to a computer program for carrying out said method. Background technique [0002] In a personal computer (PC), the optical drive is connected to other components via a communication bus, more specifically via the so-called PCI bus. Hackers can easily pick up communications over this bus and gain access to transmitted user data. So-called bus encryption techniques are commonly used to protect data transmission against eavesdropping, according to which user data are encrypted before being transmitted via the communication bus and then decryp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B20/00G06F21/60G06F21/80G11B23/28
CPCG11B20/0021G06F21/606G11B20/00086G06F21/80G11B20/00492G11B23/284G11B20/10G11B7/005G06F21/00G11B23/28
Inventor A·A·M·斯塔林B·斯科里克M·A·特雷弗斯M·J·J·J-B·梅斯
Owner KONINK PHILIPS ELECTRONICS NV
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