Flexible host system for storage media

• US 20050251481A1
• Filed: 06/11/2003
• Published: 11/10/2005
• Est. Priority Date: 06/18/2002
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Linnartz, Johan Paul Marie Gerard
• Application Number:
  US10/517,919
• Publication Number:
  US 20050251481A1
• Time in Patent Office: Days
• US Class Current: 705/51
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• CPC Class Codes: G11B 20/00246 wherein the key is obtained from a local device, e.g. device key initially stored by the player or by the recorder
• CPC Class Codes: G11B 20/00275 the key being stored on a chip attached to the record carrier
• CPC Class Codes: G11B 20/00405 the key being stored by varying characteristics of the recording track, e.g. by altering the track pitch or by modulating the wobble track
• CPC Class Codes: G11B 20/00601 wherein properties of tracks are altered, e.g., by changing the wobble pattern or the track pitch, or by adding interruptions or eccentricity
• CPC Class Codes: G11B 20/00746 wherein the usage restriction can be expressed as a specific number
• CPC Class Codes: G11B 20/00797 wherein the usage restriction limits the number of times a content can be reproduced, e.g. using playback counters
• CPC Class Codes: G11B 20/00876 wherein physical copy protection means are attached to the medium, e.g. holograms, sensors, or additional semiconductor circuitry
• CPC Class Codes: G11B 20/00884 involving a watermark, i.e. a barely perceptible transformation of the original data which can nevertheless be recognised by an algorithm

Abstract

A system (100) comprising read means (112) for reading content data and control logic data from a storage medium (101), the control logic data being uniquely linked to the storage medium (101), processing means (113-117), for processing the content data and feeding the processed content data to an output, and control means (120) for executing the control logic data and for controlling the processing means (113-117) in accordance with the control logic data being executed. The link is preferably realized by variations in a physical parameter of the storage medium (101) that exhibit a modulation pattern representing a necessary parameter for obtaining access to the control logic data. Alternatively, the link is realized by an integrated circuit (201) on the storage medium (101) which contains the necessary parameter. The necessary parameter may comprise a decryption key or authentication data.

Claims

1. A system (100) comprising read means (112) for reading content data and control logic data from a storage medium (101), the control logic data being uniquely linked to the storage medium (101), processing means (113-117), coupled to the read means (112), for processing the content data and feeding the processed content data to an output, and control means (120), coupled to the read means (112), for executing the control logic data and for controlling the processing means (113-117) in accordance with the control logic data being executed.

2. The system (100) of claim 1, in which the read means (112) are arranged for reading out variations in a physical parameter of the storage medium (101), said variations exhibiting a modulation pattern representing a necessary parameter for obtaining access to the control logic data.

3. The system (100) of claim 2, in which the control logic data is stored encrypted on the storage medium (101), and the necessary parameter comprises a decryption key necessary to decrypt the encrypted control logic data.

4. The system (100) of claim 2, in which the necessary parameter comprises authentication data for the control logic data, and the control means (120) are arranged for verifying the authenticity of the control logic data using the authentication data before executing the control logic data.

5. The system (100) of claim 1, in which the storage medium (101) comprises an integrated circuit (201) which contains a necessary parameter for obtaining access to the control logic data, and the read means (112) are arranged for reading out the necessary parameter from the integrated circuit (201).

6. The system (100) of claim 5, in which the read means (112) are further arranged for storing a value of an additional parameter on the integrated circuit (201).

7. A storage medium (101) comprising content data and control logic data, the control logic data being uniquely linked to the storage medium (101).

8. The storage medium (101) of claim 7, comprising an integrated circuit (201) which contains a necessary parameter for obtaining access to the control logic data.

9. The storage medium (101) of claim 7, exhibiting variations in a physical parameter of the storage medium (101), said variations exhibiting a modulation pattern representing a necessary parameter for obtaining access to the control logic data.

10. The storage medium (101) of claim 7, comprising an optical storage medium.