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CA2342316A1 - Frame sampling scheme for video in video-on-demand system - Google Patents

Frame sampling scheme for video in video-on-demand system

Info

Publication number
CA2342316A1
CA2342316A1 CA002342316A CA2342316A CA2342316A1 CA 2342316 A1 CA2342316 A1 CA 2342316A1 CA 002342316 A CA002342316 A CA 002342316A CA 2342316 A CA2342316 A CA 2342316A CA 2342316 A1 CA2342316 A1 CA 2342316A1
Authority
CA
Canada
Prior art keywords
video
segment
playout
variable speed
disk
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.)
Granted
Application number
CA002342316A
Other languages
French (fr)
Other versions
CA2342316C (en
Inventor
Ming-Syan Chen
Dilip D. Kandlur
Philip S. Yu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US08/222,781 external-priority patent/US5521630A/en
Application filed by Individual filed Critical Individual
Publication of CA2342316A1 publication Critical patent/CA2342316A1/en
Application granted granted Critical
Publication of CA2342316C publication Critical patent/CA2342316C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

A system and method for performing variable speed scanning or by browsing, wherein a user controls the playout speed of a movie, which does not require additional disk or network bandwidth resources. In a preferred embodiment, the method provides for scanning operations for an MPEG video stream. The method satisfies the constraints of the MPEG decoder (in the users set-top box) and require a minimum of additional system resources. The embodiments of the present invention include (a) a storage method, (b1) a segment sampling method, (b2) a segment placement method, and (c) a playout method, where (b1) and (b2) are two alternatives for segment selection. Thus, two sets of solutions are provided to support variable speed scanning in a disk- array-based video server: One using (a), (b1) and (c), and the other using (a), (b2) and (c).
CA002342316A 1994-04-04 1995-02-17 Frame sampling scheme for video in video-on-demand system Expired - Lifetime CA2342316C (en)

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 (en) 1994-04-04 1995-02-17 Frame sampling scheme for video in a video-on-demand system

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002142801A Division CA2142801C (en) 1994-04-04 1995-02-17 Frame sampling scheme for video in a video-on-demand system

Publications (2)

Publication Number Publication Date
CA2342316A1 true CA2342316A1 (en) 1995-10-05
CA2342316C CA2342316C (en) 2003-08-12

Family

ID=25677795

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002342316A Expired - Lifetime CA2342316C (en) 1994-04-04 1995-02-17 Frame sampling scheme for video in video-on-demand system
CA002342317A Expired - Lifetime CA2342317C (en) 1994-04-04 1995-02-17 Frame sampling scheme for video in video-on-demand system

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA002342317A Expired - Lifetime CA2342317C (en) 1994-04-04 1995-02-17 Frame sampling scheme for video in video-on-demand system

Country Status (1)

Country Link
CA (2) CA2342316C (en)

Also Published As

Publication number Publication date
CA2342317A1 (en) 1995-10-05
CA2342317C (en) 2003-10-14
CA2342316C (en) 2003-08-12

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Legal Events

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Effective date: 20150217

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