Efficient common storage of partially encrypted content
US-2015033008-A1 · Jan 29, 2015 · US
Selective Picture-Based Encryption of Video Streams
US2016119660A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016119660-A1 |
| Application number | US-201414525197-A |
| Country | US |
| Kind code | A1 |
| Filing date | Oct 27, 2014 |
| Priority date | Oct 27, 2014 |
| Publication date | Apr 28, 2016 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
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A method for encrypting a video stream in a video encoder is provided that includes receiving the video stream and encrypting randomly selected pictures in the video stream as the video stream is encoded.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method for encrypting a video stream in a video encoder, the method comprising: receiving the video stream; and encrypting randomly selected pictures in the video stream as the video stream is encoded. 2 . The method of claim 1 , wherein encrypting randomly selected pictures comprises: randomly selecting a subset of pictures to be encrypted from a group of sequential pictures. 3 . The method of claim 2 , wherein a number of pictures in the group of sequential pictures is based on a frame rate of the video stream. 4 . The method of claim 2 , wherein a number of pictures in the group of sequential pictures is 24 and a number of pictures in the subset is approximately 6. 5 . The method of claim 2 , wherein a number of pictures in the group of sequential pictures is 30 and a number of pictures in the subset is approximately 12. 6 . The method of claim 2 , wherein a number of pictures in the group of sequential pictures and a number of pictures in the subset varies dynamically based on a frame rate of the video stream. 7 . The method of claim 1 , wherein each picture of the randomly selected pictures is encrypted after the picture is encoded. 8 . The method of claim 1 , wherein each picture of the randomly selected pictures is encrypted before the picture is encoded. 9 . An apparatus configured to encode a video stream, the apparatus comprising: means for receiving the video stream; and means for encrypting randomly selected pictures in the video stream as the video stream is encoded. 10 . The apparatus of claim 9 , wherein the means for encrypting randomly selected pictures comprises: means for randomly selecting a subset of pictures to be encrypted from a group of sequential pictures. 11 . The apparatus of claim 10 , wherein a number of pictures in the group of sequential pictures is based on a frame rate of the video stream. 12 . The apparatus of claim 10 , wherein a number of pictures in the group of sequential pictures is 24 and a number of pictures in the subset is approximately 6. 13 . The apparatus of claim 10 , wherein a number of pictures in the group of sequential pictures is 30 and a number of pictures in the subset is approximately 12. 14 . The apparatus of claim 10 , wherein a number of pictures in the group of sequential pictures and a number of pictures in the subset varies dynamically based on a frame rate of the video stream. 15 . The apparatus of claim 9 , wherein each picture of the randomly selected pictures is encrypted after the picture is encoded. 16 . The apparatus of claim 9 , wherein each picture of the randomly selected pictures is encrypted before the picture is encoded.
Assignees
Inventors
Classifications
- H04N21/23476Primary
by partially encrypting, e.g. encrypting the ending portion of a movie · CPC title
by decomposing the content in the time domain, e.g. in time segments · CPC title
Stability, e.g. half-life, pH, temperature or enzyme-resistance · CPC title
Affinity (KD), association rate (Ka), dissociation rate (Kd) or EC50 value · CPC title
Antagonist effect on antigen, e.g. neutralization or inhibition of binding · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2016119660A1 cover?
- A method for encrypting a video stream in a video encoder is provided that includes receiving the video stream and encrypting randomly selected pictures in the video stream as the video stream is encoded.
- Who is the assignee on this patent?
- Texas Instruments Inc
- 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 Thu Apr 28 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).