SIMPLE NONAUTONOMOUS PEERING MEDIA CLONE DETECTION

• US 20100299458A1
• Filed: 07/19/2010
• Published: 11/25/2010
• Est. Priority Date: 09/20/2004
• Status: Active Grant

• Current Assignee: Warner Bros Entertainment Incorporated (Warner Bros. Discovery, Inc.)
• Original Assignee: Warner Bros Entertainment Incorporated (Warner Bros. Discovery, Inc.)
• Inventors: Lotspiech, Jeffrey Bruce, Marking, Aaron, Goeller, Kenneth
• Granted Patent: US 10,740,453 B2
• Time in Patent Office: Days
• US Class Current: 710/13
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• CPC Class Codes: G06F 21/44 Program or device authentication
• CPC Class Codes: H04K 1/00 Secret communication
• CPC Class Codes: H04L 2209/60 Digital content management, e.g. content distribution
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/06 for supporting key management in a packet data network cryptographic mechanisms or cryptographic arrangements for key management H04L9/08
• CPC Class Codes: H04L 63/065 for group communications cryptographic mechanisms or cryptographic arrangements for key management involving conference or group key H04L9/0833
• CPC Class Codes: H04L 67/06 specially adapted for file transfer, e.g. file transfer protocol [FTP]
• CPC Class Codes: H04L 67/104 Peer-to-peer [P2P] networks
• CPC Class Codes: H04L 67/108 characterised by resources being split in blocks or fragments
• CPC Class Codes: H04L 9/321 involving a third party or a trusted authority

Abstract

A playback device includes a port configured to receive content from an external memory device, a device memory residing in the device, and a controller programmed to execute instructions that cause the controller to read a read data pattern from the defined region in the external memory device and determine if the read data pattern correlates to an expected data pattern to a predetermined level, wherein the expected data pattern is derived at least in part from a defect map of the defined region. A memory device includes an array of memory cells configured to store at least one bit of data, the array of memory cells being organized into regions, at least one first region of the array of memory cells having stored therein a defect map of the array of memory cells, and at least one second region of the array of memory cells being designated as a defined region having a known defect pattern. A method of validating a memory device includes writing, using a controller in a playback device, a known data pattern to a defined region in the memory device, reading, with the controller, a read data pattern from the defined region, comparing, at the controller, the read data pattern to an expected data pattern, the expected data pattern derived from the known data pattern and a defect map of the defined region, and validating, with the controller, the memory device based upon a correlation result from the comparing.

Claims

1. A playback device, comprising:

a port configured to receive content from a content memory device;

a device memory residing in the device; and

a controller programmed to execute instructions that cause the controller to;

read a read data pattern from the defined region in the content memory device; and

determine if the read data pattern correlates to an expected data pattern to a predetermined level, wherein the expected data pattern is derived at least in part from a defect map of the defined region.

2. The playback device of claim 1, wherein the playback device consists of one of televisions, video projectors, digital video recorders, set-top boxes, kiosks, personal computers, mobile computing devices smart phones, media players, in-car players, netbooks and tablet computers.

3. The playback device of claim 1, wherein the port comprises one of an IEEE 1394 port, a USB port, and a memory card port.

4. The playback device of claim 1, wherein the controller is further programmed to access a known data pattern in the device memory, and write the known data pattern to a defined region in the content memory device.

5. The playback device of claim 1, wherein the controller is further programmed to execute instructions that cause the controller to detect the presence of the content memory device in the port.

6. The playback device of claim 1, wherein the controller is further programmed to execute instructions that cause the controller to generate a known data pattern and store it in the device memory.

7. The playback device of claim 1, wherein the controller is further programmed to allow access to content stored on the content memory device based upon the determination.

8. The playback device of claim 1, further comprising a display configured to display images corresponding to the content.

9. A content memory device, comprising:

an array of memory cells configured to store at least one bit of data, the array of memory cells being organized into regions;

at least one first region of the array of memory cells having stored therein a defect map of the array of memory cells; and

at least one second region of the array of memory cells being designated as a defined region having a known defect pattern.

10. The content memory device of claim 9, wherein the content memory device comprises one of a Memory Stick, an xD-picture card, a MultiMediaCard (MMC), a Secure Digital (SD) card, a mini SD card, a micro SD card, a CompactFlash card, a memory device coupled to a USB connector, a memory device coupled to a IEEE 1394 connector, embedded flash memory, solid state drives and hard disk drives

11. The content memory device of claim 9, wherein the first region of the content memory device comprises one of a page, multiple pages, a sector, multiple sectors, a block or multiple blocks.

12. The content memory device of claim 9, wherein the controller is further programmed to generate the expected data pattern based upon the known data pattern and the defect map.

13. A method of validating a content memory device, comprising:

writing, using a controller in a playback device, a known data pattern to a defined region in the content memory device;

reading, with the controller, a read data pattern from the defined region;

comparing, at the controller, the read data pattern to an expected data pattern, the expected data pattern derived from the known data pattern and a defect map of the defined region; and

validating, with the controller, the content memory device based upon a correlation result from the comparing.

14. The method of claim 13 further comprising accessing a device memory within the playback device to retrieve the known data pattern.

15. The method of claim 13 further comprising generating the known data pattern using the controller.

16. The method of claim 15 further comprising storing the known data pattern in a device memory in the playback device.

17. The method of claim 14 further comprising receiving the known data pattern at the device memory within the playback device and the writing is performed by one of a manufacturer or a content provider

18. The method of claim 13 further comprising allowing access to content stored in the content memory after validating the content memory device.

19. The method of claim 13 wherein the comparing further comprises altering the known data pattern using the defect map to produce the expected data pattern prior to the comparing.

20. The method of claim 13, further comprising accessing the content memory device to retrieve the defect map.

21. The method of claim 13, wherein reading the data pattern from the defined region includes reading the data pattern at least twice to detect an expected intermittent defect.