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1. (EP0750769) METHOD AND APPARATUS FOR SYNCHRONIZATION AND SCHEDULING OF MULTIPLE DATA STREAMS AND REAL TIME TASKS

Office : European Patent Office
Application Number: 94911904 Application Date: 16.03.1994
Publication Number: 0750769 Publication Date: 02.01.1997
Publication Kind : B1
Designated States: DE,FR,GB
Prior PCT appl.: Application Number:EP1994000833 ; Publication Number: Click to see the data
IPC:
G06F 9/48
G06F 9/46
G06F 17/00
G06F 17/30
G06F 19/00
G06Q 10/00
H04J 3/06
H04N 5/93
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
9
Arrangements for programme control, e.g. control unit
06
using stored programme, i.e. using internal store of processing equipment to receive and retain programme
46
Multiprogramming arrangements
48
Programme initiating; Programme switching, e.g. by interrupt
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
9
Arrangements for programme control, e.g. control unit
06
using stored programme, i.e. using internal store of processing equipment to receive and retain programme
46
Multiprogramming arrangements
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
17
Digital computing or data processing equipment or methods, specially adapted for specific functions
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
17
Digital computing or data processing equipment or methods, specially adapted for specific functions
30
Information retrieval; Database structures therefor
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
F
ELECTRIC DIGITAL DATA PROCESSING
19
Digital computing or data processing equipment or methods, specially adapted for specific applications
G PHYSICS
06
COMPUTING; CALCULATING; COUNTING
Q
DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
10
Administration; Management
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
J
MULTIPLEX COMMUNICATION
3
Time-division multiplex systems
02
Details
06
Synchronising arrangements
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
5
Details of television systems
76
Television signal recording
91
Television signal processing therefor
93
Regeneration of the television signal or of selected parts thereof
CPC:
G06F 16/40
H04J 3/0632
Applicants: IBM
Inventors: KAISERSWERTH MATTHIAS
RUETSCHE ERICH
Priority Data: 9400833 16.03.1994 EP
Title: (DE) VERFAHREN UND GERÄT FÜR DIE SYNCHRONISATION UND DEN ABLAUF VON MEHREREN DATENSTRÖMEN UND ECHTZEITAUFGABEN
(EN) METHOD AND APPARATUS FOR SYNCHRONIZATION AND SCHEDULING OF MULTIPLE DATA STREAMS AND REAL TIME TASKS
(FR) PROCEDE ET DISPOSITIF DE SYNCHRONISATION ET DE PLANIFICATION DE FLOTS DE DONNEES ET DE TACHES EN TEMPS REEL MULTIPLES
Abstract: front page image
(EN) The present application concerns a method and an apparatus for the synchronization and the scheduling of multiple data streams and real time tasks. In accordance with the present invention, pointers pointing to the information streams to be synchronized and processed are kept in the table (51) of a selector (11). The time marks (S1Start etc.) of said information streams are stored in a table (61) of a timer. The system time is checked against said time marks and if a time mark has been reached, the table (51) of said selector (11) is updated. If the status of an information stream is such that its trigger condition is fulfilled, the pointer to said information stream is made available at the output of the selector (11). This pointer is then used to retrieve the respective information stream and to forward it to a playout device.
(FR) L'invention concerne un procédé et un dispositif de synchronisation et de planification de flots de données et de tâches en temps réel multiples. Selon cette invention, des index pointant les flots d'informations à synchroniser et à traiter sont conservés dans le tableau (51) d'un sélecteur (11). Les repères de temps (S1démarrage etc.) desdits flots d'informations sont mis en mémoire dans un tableau (61) de synchronisateur. Le temps du système est contrôlé par rapport aux marques de temps, et si une marque de temps est atteinte, le tableau (51) du sélecteur (11) est mis à jour. Si l'état d'un flot d'informations est tel que sa condition de déclenchement est remplie, l'index pointant vers ledit flot d'informations est rendu disponible à la sortie du sélecteur (11). Cet index est ensuite utilisé pour récupérer le flot d'informations respectif et l'envoyer vers un dispositif d'affichage.
Also published as:
US6195701JPH09505191 DE000069410489WO/1995/025313