Storing multiple instances of content

• US 10,659,837 B2
• Filed: 12/21/2017
• Issued: 05/19/2020
• Est. Priority Date: 08/23/2011
• Status: Active Grant

• Current Assignee: Dish Technologies LLC (Dish Network Corporation)
• Original Assignee: Dish Technologies LLC (Dish Network Corporation)
• Inventors: Martch, Henry Gregg, Kummer, David A., Kennedy, John T.
• Primary Examiner(s): Kim, Tae K
• Application Number:
  US15/851,376
• Publication Number:
  US 20180139494A1
• Time in Patent Office: 880 Days
• CPC Class Codes: H04N 21/2347 involving video stream encryption
• CPC Class Codes: H04N 21/2365 Multiplexing of several video streams
• CPC Class Codes: H04N 21/42623 involving specific decryption arrangements
• CPC Class Codes: H04N 21/4263 involving specific tuning arrangements, e.g. two tuners
• CPC Class Codes: H04N 21/4334 Recording operations recording of a television signal H04N5/76; arrangements for recording or accumulating broadcast information or broadcast-related information H04H60/27
• CPC Class Codes: H04N 21/4383 Accessing a communication channel
• CPC Class Codes: H04N 21/4408 involving video stream encryption, e.g. re-encrypting a decrypted video stream for redistribution in a home network
• CPC Class Codes: H04N 21/458 Scheduling content for creating a personalised stream, e.g. by combining a locally stored advertisement with an incoming stream; Updating operations, e.g. for OS modules ; time-related management operations arrangements for replacing or switching information during the broadcast or during the distribution H04H20/10
• CPC Class Codes: H04N 5/76 Television signal recording
• CPC Class Codes: H04N 5/913 for scrambling ; for copy protection
• CPC Class Codes: H04N 9/8063 using time division multiplex of the PCM audio and PCM video signals

Abstract

Content receivers may simultaneously record multiple instances of content for multiple programming channels based on content provider instructions. Systems and methods utilize the content receivers to record these multiple instances from at least a single transponder. In some instances, multiple transponders may have a common control word so that content carried on each such transponder may be simultaneously received, decoded and recorded. Further, a single demodulator may be associated with multiple tuners, so that the single demodulator processes all content received from transponders with common control words and/or other encryption mechanisms.

Claims

1. A method for recording content, comprising:

receiving, by a content receiver, an instruction to initiate recording;

in response to the instruction, setting a tuner of one or more tuners to a carrier frequency;

receiving, via the tuner of the content receiver, a first set of content and a second set of content, wherein;

the first set of content and the second set of content are received as part of a single transponder stream by the tuner of the one or more tuners;

the first set of content and the second set of content are scrambled using a key; and

the second set of content is further scrambled using a sub-key;

decrypting, by the content receiver, a message to obtain the key;

descrambling, using a descrambler of the content receiver and the decrypted key, the first set of content and the second set of content; and

recording the descrambled first set of content and the scrambled second set of content on a storage medium, wherein;

when recorded, the scrambled second set of content has been descrambled using the key, but remains scrambled using the sub-key; and

a presence of the scrambled second set of content on the storage medium is made visible in an interface to only authorized users.

2. The method for recording content of claim 1, further comprising:

after recording the scrambled second set of content on the storage medium, further descrambling the second set of content using the sub-key.

3. The method for recording content of claim 1, wherein the key is a control word.

4. The method for recording content of claim 1, wherein the scrambled second set of content is accessible for playback by only an authorized user.

5. The method for recording content of claim 4, wherein the scrambled second set of content is output for presentation as part of a list of recorded content to all users, but can only be accessed for playback by the authorized user.

6. The method for recording content of claim 1, further comprising outputting, for presentation, an option to unlock at least a portion of the second set of content.

7. The method for recording content of claim 6, wherein the option comprises purchasing at least the portion of the second set of content.

8. A content receiver device, comprising:

a tuner operative to receive a first set of content and a second set of content, wherein;

the first set of content and the second set of content are scrambled using a key;

the first set of content and the second set of content are received as part of a single transponder stream by the tuner; and

the second set of content is further scrambled using a sub-key

a smartcard configured to decrypt a message to obtain the key;

a processing unit operatively connected to the tuner and the smartcard;

a descrambler operative to descramble the first and second instances of content wherein the descrambler is operative to use the key to descramble both the first and second instances of content; and

a data storage unit operative to receive and store the descrambled first instance of content and the descrambled second instance of content, wherein;

the scrambled second set of content has been descrambled using the key, but remains scrambled using the sub-key when recorded; and

a presence of the scrambled second set of content on the storage medium is made visible in an interface to only authorized users.

9. The content receiver device of claim 8, wherein the descrambler is further operative to descramble the second set of content using the sub-key after the second set of content is stored to the data storage unit.

10. The content receiver device of claim 8, wherein the key is a control word.

11. The content receiver device of claim 8, wherein the scrambled second set of content is accessible for playback by only an authorized user.

12. The content receiver device of claim 11, wherein the scrambled second set of content is output for presentation to a display device as part of a list of recorded content viewable to all users, but can only be accessed for playback by the authorized user.

13. The content receiver device of claim 11, further comprising the processing unit being operatively configured to output, for presentation to a display device, an option to unlock at least a portion of the second set of content.