CD with built-in chip

• US 6,044,046 A
• Filed: 01/28/1999
• Issued: 03/28/2000
• Est. Priority Date: 04/26/1996
• Status: Expired due to Fees

• Current Assignee: Giesecke & Devrient GmbH
• Original Assignee: Giesecke & Devrient GmbH
• Inventors: Diezmann, Nils, Finkenzeller, Klaus
• Primary Examiner(s): DINH, TAN X
• Application Number:
  US09/147,195
• Time in Patent Office: 425 Days
• Field of Search: 369/14, 369/273, 369/272, 369/15, 360/133, 360/135, 360/137
• US Class Current: 369/14
• CPC Class Codes: G06F 21/80 in storage media based on magnetic or optical technology, e.g. disks with sectors preventing unauthorised reproduction or copying of disc-type recordable media G11B20/00
• CPC Class Codes: G06F 2211/007 Encryption, En-/decode, En-/decipher, En-/decypher, Scramble, (De-)compress
• CPC Class Codes: G06K 19/045 the record carrier being of the non-contact type, e.g. RFID, and being specially adapted for attachment to a disc, e.g. a CD or DVD
• 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 20/00275 the key being stored on a chip attached to the record carrier
• CPC Class Codes: G11B 20/0071 involving a purchase action
• CPC Class Codes: G11B 20/00746 wherein the usage restriction can be expressed as a specific number
• 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 2220/2545 CDs
• CPC Class Codes: G11B 2220/657 Memory in disc [MID]
• CPC Class Codes: G11B 23/0042 with provision for auxiliary features sensing such features G11B17/00, G11B19/02
• CPC Class Codes: G11B 27/11 by using information not detectable on the record carrier

Abstract

A data carrier in the form of a write-once or rewritable compact disc (CD) includes a circular CD body with an information-carrying layer and a chip integrated in the CD body, the CD further including at least one CD coupling element for noncontact transfer of data between the chip and a data processing device, and of power from the data processing device to the chip. The CD coupling element can be implemented as a coil, an electrostatic coupling surface, or an optical coupling element. For reading out the information applied to the information-carrying layer of the CD, the CD can be inserted into a CD drive. The CD drive has a drive coupling element which, in correspondence with the CD coupling element, is likewise formed as a coil, an electrostatic coupling surface, or an optical coupling element and sends data to the CD coupling element or receives data therefrom. The CD coupling element may be integrated in the CD body or in a pressure plate of the CD drive which rotates with the CD and contacts contact surfaces disposed on the CD to make an electrical connection with the chip.

Claims

1. A data carrier in the form of a CD comprising a circular CD body with an information-carrying layer, the CD having a chip integrated thereinto wherein at least one CD coupling element for noncontact transfer of data between the chip and a data processing device is also integrated into the CD, and wherein power required for operating the chip is transferred to the chip via the at least one CD coupling element.

2. The CD of claim 1, wherein the chip and the CD coupling element are disposed between a center hole of the CD and an innermost data track.

3. The CD of claim 1, wherein the chip and the CD coupling element are potted by means of resin to form a module.

4. The CD of claim 3, wherein the CD body has a gap in which the module is inserted.

5. The CD of claim 3, wherein the module is molded by surrounding material of the CD body.

6. The CD of claim 1, wherein on the chip data are stored without which the information stored on the CD cannot be processed, or not processed correctly.

7. The CD of claim 6, wherein the stored data are keys for decrypting the information stored on the CD.

8. The CD of claim 7, wherein the chip is arranged to store user-specific settings of a program stored on the CD.

9. The CD of claim 1, wherein the chip stores an amount serving to pay for use of information stored on the CD.

10. The CD of claim 1, wherein the CD coupling element for noncontact transfer of data and power consists of at least one coil.

11. The CD of claim 10, wherein the coil is a wound coil or consists of a thin metal layer.

12. The CD of claim 1, wherein the CD coupling element for noncontact transfer of data between the chip and the data processing device is a capacitive coupling surface formed by a thin metal layer, and wherein a further thin metal layer is provided for the transfer of power.

13. The CD of claim 1, wherein the CD coupling element for noncontact transfer of data and power includes at least one optical coupling element.

14. The CD of claim 13, wherein the optical coupling element is connected with an optical auxiliary element which passes on the light used for optical data transfer to the optical coupling element.

32. The CD of claim 6, wherein the stored data are algorithms for decrypting the information stored on the CD.

34. The CD of claim 7, wherein the chip is arranged to store temporary results of calculations.

15. An apparatus for communications between a CD and a data processing device, said CD comprising a circular CD body with an information-carrying layer the CD having a chip integrated thereinto wherein at least one CD coupling element for noncontact transfer of data between the chip and a data processing device is also integrated into the CD, and wherein power required for operating the chip is transferred to the chip via the at least one CD coupling element the apparatus including a CD drive with a device for rotating the CD and with a CD readout device for reading the information from the rotating CD, wherein the CD drive has a drive coupling element for noncontact transfer of data from and to the chip of the CD via the CD coupling element, as well as for transfer of power to the chip of the CD.

16. The apparatus of claim 15, wherein the drive coupling element is formed as an element selected from the group consisting of a coil, a capacitive coupling surface, and an optical coupling element.

17. The apparatus of claim 15, wherein the CD readout device performs the functions of the drive coupling element.

18. The apparatus of claim 16 or 17, wherein a logic device is provided with which the drive coupling element and the CD readout device are connected via separate interfaces, and which has at least one interface for connection with the data processing device, the logic device being designed so as to pass on the data from the data processing device in accordance with their addressing to one of the drive coupling element and the CD readout device.

19. The apparatus of claim 15, wherein the chip and the CD coupling element are disposed between a center hole of the CD and an innermost data track.

20. The apparatus of claim 19, wherein the chip and the CD coupling element are potted by means of resin to form a module.

21. The apparatus of claim 19, wherein the CD body has a gap in which the module is inserted.

22. The apparatus of claim 15, wherein the module is molded by surrounding material of the CD body.

23. The apparatus of claim 15, wherein on the chip data are stored without which the information stored on the CD c an not be processed, or not processed correctly.

24. The apparatus of claim 23, wherein the stored data are keys for decrypting the information stored on the CD.

25. The apparatus of claim 24, wherein the chip is arranged to store user-specific settings of a program stored on the CD.

26. The apparatus of claim 15, wherein the chip stores an amount serving to pay for use of information stored on the CD.

27. The apparatus of claim 15, wherein the CD coupling element for noncontact transfer of data and power consists of at least one coil.

28. The apparatus of claim 27, wherein the coil is a wound coil or consists of a thin metal layer.

29. The apparatus of claim 15, wherein the CD coupling element for noncontact transfer of data between the chip and the data processing device is a capacitive coupling surface formed by a thin metal layer, and wherein a further thin metal layer is provided for the transfer of power.

30. The apparatus of claim 15, wherein the CD coupling element for noncontact transfer of data and power includes at least one optical coupling element.

31. The apparatus of claim 30, wherein the optical coupling element is connected with an optical auxiliary element which passes on the light used for optical data transfer to the optical coupling element.

33. The apparatus of claim 23, wherein the stored data are algorithms for decrypting the information stored on the CD.

35. The apparatus of claim 24, wherein the chip is arranged to store temporary results of calculations.