CA2179842A1 - Dynamic hierarchical resource scheduling for continuous media - Google Patents

Dynamic hierarchical resource scheduling for continuous media

Info

Publication number
CA2179842A1
CA2179842A1 CA002179842A CA2179842A CA2179842A1 CA 2179842 A1 CA2179842 A1 CA 2179842A1 CA 002179842 A CA002179842 A CA 002179842A CA 2179842 A CA2179842 A CA 2179842A CA 2179842 A1 CA2179842 A1 CA 2179842A1
Authority
CA
Canada
Prior art keywords
continuous media
operating system
application
resource scheduling
file
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
CA002179842A
Other languages
French (fr)
Other versions
CA2179842C (en
Inventor
Alexandros Biliris
Bruce Kenneth Hillyer
Euthimios Panagos
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.)
AT&T Corp
Original Assignee
AT&T IPM Corp
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
Application filed by AT&T IPM Corp filed Critical AT&T IPM Corp
Publication of CA2179842A1 publication Critical patent/CA2179842A1/en
Application granted granted Critical
Publication of CA2179842C publication Critical patent/CA2179842C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/40—Data acquisition and logging
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/46—Multiprogramming arrangements
    • G06F9/48—Program initiating; Program switching, e.g. by interrupt
    • G06F9/4806—Task transfer initiation or dispatching
    • G06F9/4843—Task transfer initiation or dispatching by program, e.g. task dispatcher, supervisor, operating system
    • G06F9/4881—Scheduling strategies for dispatcher, e.g. round robin, multi-level priority queues
    • G06F9/4887—Scheduling strategies for dispatcher, e.g. round robin, multi-level priority queues involving deadlines, e.g. rate based, periodic
    • 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
    • H04N21/239—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests
    • H04N21/2393—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests involving handling client requests
    • 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
    • H04N21/241—Operating system [OS] processes, e.g. server setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/173—Analogue secrecy systems; Analogue subscription systems with two-way working, e.g. subscriber sending a programme selection signal
    • H04N7/17309—Transmission or handling of upstream communications
    • H04N7/17336—Handling of requests in head-ends
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2209/00—Indexing scheme relating to G06F9/00
    • G06F2209/48—Indexing scheme relating to G06F9/48
    • G06F2209/485—Resource constraint

Abstract

An apparatus and method is provided that supports continuous media for conventional networked workstations and PC's. Described are user-level mechanisms and policies designed to give good, efficient multimedia service under the mild assumption that the operating system provides a preemptive real-time scheduling class that can be used to give CPU cycles to the multimedia processesin preference to other processes that are not time sensitive. There are no modifications to the operating system kernel and isochronous networks are not required. It suffices for an application to state that it wants to play a particular stream of a type known to the server (e.g. a file containing MPEG-1 video 32Ox240 pixels, 8-bit color, 30 frames per second), or for the application to specify a frame rate and an index describing the offset of each frame in a file.
CA002179842A 1995-09-08 1996-06-25 Dynamic hierarchical resource scheduling for continuous media Expired - Fee Related CA2179842C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US525,937 1990-05-18
US08/525,937 US6041354A (en) 1995-09-08 1995-09-08 Dynamic hierarchical network resource scheduling for continuous media

Publications (2)

Publication Number Publication Date
CA2179842A1 true CA2179842A1 (en) 1997-03-09
CA2179842C CA2179842C (en) 2001-05-01

Family

ID=24095237

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002179842A Expired - Fee Related CA2179842C (en) 1995-09-08 1996-06-25 Dynamic hierarchical resource scheduling for continuous media

Country Status (5)

Country Link
US (1) US6041354A (en)
EP (1) EP0762275A3 (en)
JP (1) JPH09152977A (en)
KR (1) KR970017012A (en)
CA (1) CA2179842C (en)

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Also Published As

Publication number Publication date
US6041354A (en) 2000-03-21
CA2179842C (en) 2001-05-01
JPH09152977A (en) 1997-06-10
KR970017012A (en) 1997-04-28
EP0762275A2 (en) 1997-03-12
EP0762275A3 (en) 1997-07-09

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