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1. WO2000040004 - METHOD AND APPARATUS FOR PROVIDING RELIABLE GRAPHIC MEMORY OPERATIONS IN A SET-TOP BOX ENVIRONMENT

Publication Number WO/2000/040004
Publication Date 06.07.2000
International Application No. PCT/US1999/030245
International Filing Date 17.12.1999
Chapter 2 Demand Filed 07.07.2000
IPC
H04N 21/426 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand
40Client devices specifically adapted for the reception of, or interaction with, content, e.g. STB ; Operations thereof
41Structure of client; Structure of client peripherals
426Internal components of the client
H04N 21/443 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand
40Client devices specifically adapted for the reception of, or interaction with, content, e.g. STB ; Operations thereof
43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronizing decoder's clock; Client middleware
443OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
H04N 5/44 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
44Receiver circuitry
H04N 5/445 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
44Receiver circuitry
445for displaying additional information
CPC
G09G 2360/12
GPHYSICS
09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
2360Aspects of the architecture of display systems
12Frame memory handling
H04N 21/42692
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
41Structure of client; Structure of client peripherals
426Characteristics of or; Internal components of the client
42692for reading from or writing on a volatile storage medium, e.g. Random Access Memory [RAM]
H04N 21/4435
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand [VOD]
40Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
43Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network, synchronizing decoder's clock; Client middleware
443OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB
4435Memory management
H04N 5/4401
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
44Receiver circuitry
4401for the reception of a digital modulated video signal
H04N 5/445
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
44Receiver circuitry
445for displaying additional information
Applicants
  • POWERTV, INC. [US/US]; Suite 100 20833 Steven Creek Blvd. Cupertino, CA 95014-2154, US
Inventors
  • WISHOFF, Clayton, W.; US
  • WOODSON, Morgan; US
  • ASPROMONTE, Bill, J.; US
Agents
  • MASSARONI, Kenneth M. ; Scientific-Atlanta, Inc. Intellectual Property Department (ATL 4.3.517) 5030 Sugarloaf Parkway Lawrenceville, GA 30044, US
Priority Data
09/220,30523.12.1998US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR PROVIDING RELIABLE GRAPHIC MEMORY OPERATIONS IN A SET-TOP BOX ENVIRONMENT
(FR) PROCEDE ET APPAREIL PERMETTANT D'ASSURER DES OPERATIONS MEMOIRE GRAPHIQUE FIABLES DANS UN ENVIRONNEMENT DECODEUR
Abstract
(EN)
A video memory handling system and method for providing a graphic computer-implemented process with a predetermined amount of video memory to be used by the graphic process to perform a predetermined graphic-related operation within a set-top box environment. A first video memory portion is provided which has an allocation status with respect to the graphic process. A video memory handling data structure indicates the allocation status of the first video memory portion. A video memory manager which is connected to the video memory handling data structure reallocates the first video memory portion based upon the video memory handling data structure. The reallocated first video memory portion is utilized by the graphic process to perform the predetermined graphic-related operation.
(FR)
L'invention concerne un système de manipulation de la mémoire vidéo et un procédé associé permettant d'assurer un processus mis en oeuvre par ordinateur graphique avec un volume prédéterminé de mémoire vidéo que le processus graphique peut utiliser pour exécuter une opération relative au graphique prédéterminée dans un environnement décodeur. Une première partie de la mémoire vidéo possède un statut d'affectation par rapport au processus graphique. Une structure de données de manipulation de la mémoire vidéo indique le statut d'affectation de la première partie de la mémoire vidéo. Un gestionnaire de la mémoire vidéo, relié à la structure de données de manipulation de ladite mémoire, réaffecte la première partie de la mémoire vidéo en fonction de ladite structure. Le processus graphique utilise la première partie de la mémoire vidéo réaffectée pour exécuter l'opération relative au graphique prédéterminée.
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