Data reproducing method, data recording/ reproducing apparatus and data transmitting method

• US 8,438,651 B2
• Filed: 03/30/2006
• Issued: 05/07/2013
• Est. Priority Date: 04/07/2005
• Status: Expired due to Fees

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Shim, Young Sun, Kim, Byung Jin, Yoo, Jea Yong
• Primary Examiner(s): Cervetti, David Garcia
• Application Number:
  US11/392,737
• Publication Number:
  US 20070186286A1
• Time in Patent Office: 2,595 Days
• Field of Search: 713/193, 726/26, 726/27
• US Class Current: 726/27
• 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 20/00862 wherein the remote server can grant the permission to use a content
• CPC Class Codes: H04N 21/42646 for reading from or writing on a non-volatile solid state storage medium, e.g. DVD, CD-ROM
• CPC Class Codes: H04N 21/42684 Client identification by a unique number or address, e.g. serial number, MAC address, socket ID network arrangements, protocols or services for addressing or naming H04L61/00
• CPC Class Codes: H04N 21/4325 by playing back content from the storage medium reproduction of recorded television signals H04N5/76; reproduction of recorded television signals H04N9/79
• CPC Class Codes: H04N 21/4627 Rights management associated to the content security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08
• CPC Class Codes: H04N 21/6334 for authorisation, e.g. by transmitting a key wireless communications network key management H04W12/04; wireless communications network access security H04W12/08
• CPC Class Codes: H04N 21/6543 for forcing some client operations, e.g. recording remote booting in general G06F9/4416
• CPC Class Codes: H04N 21/6581 Reference data, e.g. a movie identifier for ordering a movie or a product identifier in a home shopping application
• CPC Class Codes: H04N 21/8358 involving watermark protecting executable software by watermarking G06F21/16; image watermarking in general G06T1/0021; watermarks inserted in still images for transmission purposes H04N1/32144; inserting watermarks during video coding H04N19/467
• CPC Class Codes: H04N 7/17318 Direct or substantially direct transmission and handling of requests

Abstract

A data reproducing method, data recording/reproducing apparatus and data transmitting method are disclosed. The present invention includes the steps of providing information for identifying a player to a server, downloading data based on the information from the server and reproducing the data. And, the present invention includes the steps of receiving information for identifying a player from the player, configuring data using the information, and transmitting the data to the player. Accordingly, content can be protected against illegal copy, illegal distribution and the like by employing player information. And, the present invention can trace a player having compromised content.

Claims

1. A method of reproducing data stored on a reproducing apparatus, comprising steps of:

transmitting an identification information of the reproducing apparatus to a content provider, the content provider is an external source providing content data to the reproducing apparatus;

downloading an encrypted content data based on the identification information to a storage device of the reproducing apparatus from the content provider;

decrypting the content data by using a decryption key; and

reproducing the decrypted content data,

wherein the content data includes at least one segment configured in a variant stream corresponding to a sequence key, wherein the sequence key is variant information of the content data and unique to the reproducing apparatus.

2. The method of claim 1, wherein the identification information is stored in a memory unit within the reproducing apparatus.

3. The method of claim 2, wherein the memory unit is a Player Status Register (PSR).

4. The method of claim 3, wherein the Player Status Register (PSR) is configured to a Player Setting Register.

5. The method of claim 1, further comprising the steps of:

downloading the encrypted decryption key from the content provider,

decrypting the decryption key by using a device key, the device key is a unique key to the reproducing apparatus and provisioned to the reproducing apparatus.

6. A data reproducing apparatus comprising;

a storage device configured to store a downloaded content data;

a memory unit configured to store an identification information of the apparatus; and

a controller configured to;

transmit the identification information of the apparatus to a content provider, the content provider is an external source providing the content data to the apparatus,

download an encrypted content data based on the identification information from the content provider,

decrypt the content data by using a decryption key, and

reproduce the decrypted content data,

wherein the content data includes at least one segment configured in a variant stream corresponding to a sequence key,

wherein the sequence key is variant information of the content data and unique to the apparatus.

7. The apparatus of claim 6, wherein the memory unit is a Player Status Register (PSR).

8. The apparatus of claim 7, wherein the Player Status Register (PSR) is configured to a Player Setting Register.

9. The apparatus of claim 6, wherein the controller is configured to:

download the encrypted decryption key used to decrypt the content data from the content provider content,

decrypting the decryption key by using a device key, the device key is a unique key to the apparatus and provisioned to the apparatus.