Content protection
US-2024267575-A1 · Aug 8, 2024 · US
Computational efficiently obtaining a control word in a receiver using transformations
US9106795B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9106795-B2 |
| Application number | US-98097810-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 29, 2010 |
| Priority date | Jan 26, 2010 |
| Publication date | Aug 11, 2015 |
| Grant date | Aug 11, 2015 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
The invention provides a receiver, a smartcard and a conditional access system for securely obtaining a control word using an entitlement transform tree, wherein intermediate results are cached to improve computational efficiency.
First claim
Opening claim text (preview).
What is claimed is: 1. A receiver for securely obtaining a control word, the receiver comprising: a first memory configured for storing a transform function configured to receive a transformed control word and a seed and to migrate the transformed control word from an input transform space to an output transform space to obtain the control word using a mathematical transformation under control of the seed, wherein the control word is in a clear text form or in an encrypted form;…
Assignees
Inventors
Classifications
Electricity · mapped topic
- H04N21/4623Primary
Electricity · mapped topic
Electricity · mapped topic
- H04N21/26606Primary
Electricity · mapped topic
- H04N7/163Primary
Electricity · mapped topic
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9106795B2 cover?
- The invention provides a receiver, a smartcard and a conditional access system for securely obtaining a control word using an entitlement transform tree, wherein intermediate results are cached to improve computational efficiency.
- Who is the assignee on this patent?
- Benedetti Ettore, Van Foreest Arnoud Evert, Irdeto Bv
- What technology area does this patent fall under?
- Primary CPC classification H04N21/4623. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Aug 11 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).