CA2413807C - Detection progressive de tranches de rafraichissement video - Google Patents
Detection progressive de tranches de rafraichissement video Download PDFInfo
- Publication number
- CA2413807C CA2413807C CA 2413807 CA2413807A CA2413807C CA 2413807 C CA2413807 C CA 2413807C CA 2413807 CA2413807 CA 2413807 CA 2413807 A CA2413807 A CA 2413807A CA 2413807 C CA2413807 C CA 2413807C
- Authority
- CA
- Canada
- Prior art keywords
- packets
- encryption
- slice
- packet type
- encrypting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000001514 detection method Methods 0.000 title abstract 2
- 230000000750 progressive effect Effects 0.000 title description 7
- 238000000034 method Methods 0.000 claims abstract description 67
- 230000009977 dual effect Effects 0.000 claims abstract description 12
- 230000008569 process Effects 0.000 description 20
- 230000001360 synchronised effect Effects 0.000 description 13
- 206010036618 Premenstrual syndrome Diseases 0.000 description 12
- 238000001824 photoionisation detection Methods 0.000 description 11
- 238000012545 processing Methods 0.000 description 9
- 230000007704 transition Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000003607 modifier Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 101100190464 Caenorhabditis elegans pid-2 gene Proteins 0.000 description 1
- 101000911753 Homo sapiens Protein FAM107B Proteins 0.000 description 1
- 102100026983 Protein FAM107B Human genes 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
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- 230000001343 mnemonic effect Effects 0.000 description 1
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- 238000011084 recovery Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/16—Analogue secrecy systems; Analogue subscription systems
- H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
- H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
- H04N21/23476—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption by partially encrypting, e.g. encrypting the ending portion of a movie
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/23608—Remultiplexing multiplex streams, e.g. involving modifying time stamps or remapping the packet identifiers
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
Un codeur de chiffrement sélectif et une méthode de chiffrement double sélective et une détection de tranches intra-codées dans un contenu vidéo. Le codeur de chiffrement sélectif est muni d'un identificateur de paquet qui identifie des paquets d'au moins un type de paquet spécifié, celui-ci étant dans une série de tranches consécutives N dans une trame où le deuxième multiplet après un code de commencement de tranche est identique dans toutes les tranches consécutives N. Un duplicateur de paquet reproduit les paquets identifiés afin de produire une première et une deuxième séries des paquets identifiés, Les paquets sont envoyés à un codeur de chiffrement primaire et à partir de celui-ci afin de chiffrer la première série des paquets identifiés selon une première méthode de chiffrement. Un codeur secondaire chiffre la deuxième série des paquets identifiés selon une deuxième méthode de chiffrement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2709393 CA2709393C (fr) | 2002-01-02 | 2002-12-10 | Detection progressive de tranches de rafraichissement video |
Applications Claiming Priority (16)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/037,499 | 2002-01-02 | ||
| US10/037,498 US7127619B2 (en) | 2001-06-06 | 2002-01-02 | Decoding and decryption of partially encrypted information |
| US10,038,032 | 2002-01-02 | ||
| US10/037,914 | 2002-01-02 | ||
| US10/037,499 US7151831B2 (en) | 2001-06-06 | 2002-01-02 | Partial encryption and PID mapping |
| US10,038,217 | 2002-01-02 | ||
| US10/038,032 US7139398B2 (en) | 2001-06-06 | 2002-01-02 | Time division partial encryption |
| US10/037,498 | 2002-01-02 | ||
| US10/037,914 US7124303B2 (en) | 2001-06-06 | 2002-01-02 | Elementary stream partial encryption |
| US10/038,217 US7336787B2 (en) | 2001-06-06 | 2002-01-02 | Critical packet partial encryption |
| US40967502P | 2002-09-09 | 2002-09-09 | |
| US60/409,675 | 2002-09-09 | ||
| US10/273,905 US7376233B2 (en) | 2002-01-02 | 2002-10-18 | Video slice and active region based multiple partial encryption |
| US10/273,905 | 2002-10-18 | ||
| US10/303,594 | 2002-11-25 | ||
| US10/303,594 US7292691B2 (en) | 2002-01-02 | 2002-11-25 | Progressive video refresh slice detection |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2709393 Division CA2709393C (fr) | 2002-01-02 | 2002-12-10 | Detection progressive de tranches de rafraichissement video |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2413807A1 CA2413807A1 (fr) | 2003-07-02 |
| CA2413807C true CA2413807C (fr) | 2011-08-16 |
Family
ID=46150245
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2709393 Expired - Lifetime CA2709393C (fr) | 2002-01-02 | 2002-12-10 | Detection progressive de tranches de rafraichissement video |
| CA 2413807 Expired - Lifetime CA2413807C (fr) | 2002-01-02 | 2002-12-10 | Detection progressive de tranches de rafraichissement video |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2709393 Expired - Lifetime CA2709393C (fr) | 2002-01-02 | 2002-12-10 | Detection progressive de tranches de rafraichissement video |
Country Status (1)
| Country | Link |
|---|---|
| CA (2) | CA2709393C (fr) |
-
2002
- 2002-12-10 CA CA 2709393 patent/CA2709393C/fr not_active Expired - Lifetime
- 2002-12-10 CA CA 2413807 patent/CA2413807C/fr not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2709393C (fr) | 2013-07-02 |
| CA2413807A1 (fr) | 2003-07-02 |
| CA2709393A1 (fr) | 2003-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7292691B2 (en) | Progressive video refresh slice detection | |
| US7751564B2 (en) | Star pattern partial encryption method | |
| US8027469B2 (en) | Video slice and active region based multiple partial encryption | |
| US7792294B2 (en) | Selective encryption encoding | |
| US7751563B2 (en) | Slice mask and moat pattern partial encryption | |
| US8027470B2 (en) | Video slice and active region based multiple partial encryption | |
| CA2413807C (fr) | Detection progressive de tranches de rafraichissement video |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20221212 |