Systems, methods, and program applications for selectively restricting the placeshifting of copy protected digital media content

• US 8,381,310 B2
• Filed: 11/23/2009
• Issued: 02/19/2013
• Est. Priority Date: 08/13/2009
• Status: Active Grant

• Current Assignee: Dish Network Technologies India Private Limited
• Original Assignee: Sling Media Incorporated (Dish Network Corporation), Sling Media Pvt Ltd. (Dish Network Corporation)
• Inventors: Gangotri, Arun L., Gurzhi, Alexander
• Primary Examiner(s): Abrishamkar, Kaveh
• Assistant Examiner(s): PARSONS, THEODORE C
• Application Number:
  US12/623,955
• Publication Number:
  US 20100071076A1
• Time in Patent Office: 1,184 Days
• Field of Search: 726/32, 726/30
• US Class Current: 726/30
• 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: 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: H04L 2463/101 applying security measures for digital rights management data processing systems or methods, specially adapted for commerce, e.g. marketing, shopping, billing, auctions or e-commerce G06Q30/00
• CPC Class Codes: H04L 63/10 for controlling access to devices or network resources

Abstract

Systems, methods, and program products are provided for selectively restricting the transmission of copy protected digital media content from a computer system, over a network, and to a remote display. In one embodiment, a method includes the steps of capturing digital media content rendered on the local display by a media player application executed by the computer system; determining whether the media player application is accessing copy protected digital media content; and, if the media player application is not accessing copy protected digital media content, converting the captured digital media content to a media stream and transmitting the media stream over a network for presentation on a remote display.

Claims

1. A method executable by a computer system coupled to a local display, the method comprising:

capturing video media content rendered on the local display by a media player application executed by the computer system and obtained from a digital versatile disc (DVD), the video media content captured from video memory while rendered on the local display by the media player application;

determining whether the media player application is accessing copy protected video content stored on the DVD, determining comprising;

parsing the DVD file structure to find information regarding titles contained within the DVD file structure;

selecting at least one title based, at least in part, upon title duration; and

searching the selected title to determine if the selected title contains instructions to activate analog copy protection;

if it is determined that the selected title does not contain instructions to activate analog copy protection, converting the captured digital video content to a media stream and transmitting the media stream over a network for presentation on a remote display; and

if it is determined that the selected title contains instructions to activate analog copy protection, blocking transmission of the media stream and causing a visual copy protection alert to be displayed on the remote display.

2. A method according to claim 1 wherein causing a visual copy protection alert to be displayed on the remote display comprises transmitting an image of a text message over the network for presentation on the remote display.

3. A method according to claim 1 further comprising:

compiling a wide list of processes currently executed by the computer system; and

narrowing the wide list to yield a narrow list of processes currently executed by the computer system and potentially comprising media player applications.

4. A method according to claim 3 wherein the determining comprises determining whether each process in the narrow list comprises a media player application accessing copy protected digital media content.

5. A method according to claim 4 wherein the narrowing comprises eliminating from the wide list any known non-player process capable of accessing digital media files.

6. A method according to claim 4 wherein the narrowing comprises determining which processes to select from the wide list based at least in part upon which, if any, process file names include a predetermined alphanumeric grouping.

7. A method according to claim 6 wherein the narrowing comprises determining which processes to select from the wide list based at least in part upon which, if any, process file names include the letter grouping “

DVD”

.

8. A method according to claim 4 wherein the narrowing comprises determining which processes to select from the wide list based at least in part upon which, if any, processes are currently utilizing a module supportive of digital media playback.

9. A method according to claim 8 wherein the narrowing comprises determining which processes to select from the wide list based at least in part upon which, if any, processes are currently utilizing at least one type of shared library.

10. A method according to claim 1 wherein the determining further comprises:

establishing if the media player application is accessing a predetermined file type supported by the media player application and containing digital rights management (DRM) protected content; and

blocking transmission of the media stream if the media player application is accessing a predetermined file type supported by the media player application and containing DRM-protected content.

11. A method according to claim 10 wherein the media player application has an application programming interface associated therewith, and wherein the establishing comprises querying the application programming interface to determine if the media player application is accessing a digital media file containing DRM-protected content.

12. A non-transitory computer-readable medium comprising instructions stored thereon that are executable by a computer system to transmit digital media content over a network to a remote display, wherein the instructions comprise a placeshifting program application adapted to perform steps comprising:

capturing digital media content rendered on a local display associated with the computer system by a media player application executed by the computer system, the digital media content obtained from a digital versatile disc (DVD) and captured while rendered on the local display;

converting the captured digital media content to a media stream in a network-transmittable format;

transmitting the media stream over the network for presentation on the remote display;

determining whether the media player application is accessing a copy protected digital media file stored on the DVD, determining comprising;

parsing the DVD to find information regarding titles contained within the DVD;

selecting at least one title based, at least in part, upon title duration; and

searching the selected title to determine if the selected title contains instructions to activate analog copy protection; and

blocking transmission of the media stream if the selected title contains instructions to activate copy protection.

13. A non-transitory computer-readable medium according to claim 12 wherein the placeshifting program application is further adapted to block transmission of the media stream if the digital media content currently accessed by media player application comprises a digital media file supported by the media player application and containing digital media rights protected content.

14. A computer system for placeshifting digital media content in conjunction with a digital network and a remote display, the computer system comprising:

a first interface to the digital network;

a second interface to a local display; and

a processor operatively coupled to the first interface and to the second interface, the processor configured to selectively execute at least one media player application to render digital media content on the local display and obtained from a digital versatile disc (DVD), the processor further configured to;

(i) capture at least a portion of the digital media content while rendered on the local display, (ii) convert the captured digital media content to a media stream in a network-transmittable format, (iii) transmit the media stream over the network for presentation on the remote display, (iv) determine whether the media player application is accessing a copy protected digital media file stored on the DVD, and (v) block transmission of the media stream if the media player application is accessing copy protected digital media content

wherein the processor is configured to determine whether the media player application is accessing a copy protected digital media file stored on the DVD by parsing the DVD to find information regarding titles contained within the DVD;

by selecting at least one title based, at least in part, upon title duration; and

by searching the selected title to determine if the selected title contains instructions to activate analog copy protection.

15. A computer system according to claim 14 wherein the processor is configured to block transmission of the media stream if the digital media content currently accessed by media player application comprises a digital media file supported by the media player application and containing digital media rights protected content.