CA2342317C - Methode d'echantillonnage de trame pour systeme video a la demande - Google Patents
Methode d'echantillonnage de trame pour systeme video a la demande Download PDFInfo
- Publication number
- CA2342317C CA2342317C CA002342317A CA2342317A CA2342317C CA 2342317 C CA2342317 C CA 2342317C CA 002342317 A CA002342317 A CA 002342317A CA 2342317 A CA2342317 A CA 2342317A CA 2342317 C CA2342317 C CA 2342317C
- Authority
- CA
- Canada
- Prior art keywords
- frames
- video
- disks
- array
- segment
- 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
- 238000005070 sampling Methods 0.000 title abstract description 23
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 61
- 239000000872 buffer Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 230000006854 communication Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 241001522296 Erithacus rubecula Species 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000013507 mapping Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007175 bidirectional communication Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000003278 mimic effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Classifications
-
- 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
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2387—Stream processing in response to a playback request from an end-user, e.g. for trick-play
-
- 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
- H04N21/231—Content storage operation, e.g. caching movies for short term storage, replicating data over plural servers, prioritizing data for deletion
- H04N21/2312—Data placement on disk arrays
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
Un système et une méthode pour effectuer un balayage ou un survol à vitesse variable, dans lequel un utilisateur contrôle la vitesse de défilement d'un film, qui ne nécessite pas de ressources supplémentaires de disque ou de bande passante du réseau. Dans une matérialisation préférentielle, la méthode sert aux opérations de balayage pour un flux vidéo MPEG. La méthode respecte les contraintes du décodeur MPEG (dans la boîte numérique de l'utilisateur) et exige un minimum de ressources système supplémentaires. Les matérialisations de la présente invention comprennent (a) une méthode de stockage, (b1) une méthode d'échantillonnage de segment, (b2) une méthode de positionnement de segment et (c) une méthode de défilement, où (b1) et (b2) sont deux autres possibilités pour la sélection du segment. Ainsi, deux ensembles de solutions sont fournis pour effectuer un balayage à vitesse variable dans un serveur vidéo basé sur une matrice de disques : une à l'aide de (a), (b1) et (c) et l'autre à l'aide de (a), (b2) et (c).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/222,781 | 1994-04-04 | ||
| US08/222,781 US5521630A (en) | 1994-04-04 | 1994-04-04 | Frame sampling scheme for video scanning in a video-on-demand system |
| CA002142801A CA2142801C (fr) | 1994-04-04 | 1995-02-17 | Methode d'echantillonnage de trame pour systeme video a la demande |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002142801A Division CA2142801C (fr) | 1994-04-04 | 1995-02-17 | Methode d'echantillonnage de trame pour systeme video a la demande |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2342317A1 CA2342317A1 (fr) | 1995-10-05 |
| CA2342317C true CA2342317C (fr) | 2003-10-14 |
Family
ID=25677795
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002342316A Expired - Lifetime CA2342316C (fr) | 1994-04-04 | 1995-02-17 | Methode d'echantillonnage de trame pour systeme video a la demande |
| CA002342317A Expired - Lifetime CA2342317C (fr) | 1994-04-04 | 1995-02-17 | Methode d'echantillonnage de trame pour systeme video a la demande |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002342316A Expired - Lifetime CA2342316C (fr) | 1994-04-04 | 1995-02-17 | Methode d'echantillonnage de trame pour systeme video a la demande |
Country Status (1)
| Country | Link |
|---|---|
| CA (2) | CA2342316C (fr) |
-
1995
- 1995-02-17 CA CA002342316A patent/CA2342316C/fr not_active Expired - Lifetime
- 1995-02-17 CA CA002342317A patent/CA2342317C/fr not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2342317A1 (fr) | 1995-10-05 |
| CA2342316A1 (fr) | 1995-10-05 |
| CA2342316C (fr) | 2003-08-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20150217 |
|
| MKEX | Expiry |
Effective date: 20150217 |
|
| MKEX | Expiry |
Effective date: 20150217 |