System and method for deterministic generation of a common content encryption key on distinct encryption units
US-9225520-B2 · Dec 29, 2015 · US
On-demand switched content encryption
US9002005B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9002005-B2 |
| Application number | US-201414157983-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 17, 2014 |
| Priority date | Dec 28, 2010 |
| Publication date | Apr 7, 2015 |
| Grant date | Apr 7, 2015 |
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Abstract
Official abstract text for this publication.
A number of encryption system types utilized by subscriber terminal devices currently requesting tuning to a particular switched digital video (SDV) content selection is determined in response to each change in a number of the subscriber terminals requesting tuning to the particular SDV content selection. SDV content associated with the particular SDV content selection is encrypted as either encrypted SDV content or multiply partially encrypted SDV content based upon the determined number of encryption system types beginning from a current play location indicated for the SDV content selection within an electronic program guide (EPG). Either the encrypted SDV content or the multiply partially encrypted SDV content is distributed as part of an outgoing SDV content stream to the subscriber terminals currently requesting tuning to the particular SDV content selection.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of conserving bandwidth within a switched digital video (SDV) system, comprising: determining, via a SDV processing module, a number of encryption system types utilized by subscriber terminal devices currently requesting tuning to a particular SDV content selection in response to each change in a number of the subscriber terminal devices requesting tuning to the particular SDV content selection, where: a first change in the number of the subscriber…
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Classifications
- H04N21/23476Primary
Electricity · mapped topic
Electricity · mapped topic
- H04N21/2347Primary
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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Frequently asked questions
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- What does patent US9002005B2 cover?
- A number of encryption system types utilized by subscriber terminal devices currently requesting tuning to a particular switched digital video (SDV) content selection is determined in response to each change in a number of the subscriber terminals requesting tuning to the particular SDV content selection. SDV content associated with the particular SDV content selection is encrypted as either en…
- Who is the assignee on this patent?
- Sony Corp
- What technology area does this patent fall under?
- Primary CPC classification H04N21/23476. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Apr 07 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).