Methods and apparatus for updating firmware in an electronic...

G - Physics – 01 – R

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Details

G01R 11/32 (2006.01) G01R 21/133 (2006.01) G06F 9/445 (2006.01)

Patent

CA 2340879

The present invention, in one embodiment, is a method for operating an electronic electric meter (100) having current (104) and voltage sensors (106) configured to generate measurements of current and voltage, respectively; a microcomputer (114) coupled to the current (104) and voltage sensors (106) and having on-chip masked read only memory (ROM) (120); and a nonvolatile, alterable memory (118) coupled to the microcomputer (114). The method includes steps of: storing vectors pointing to program portions of the ROM in the non- volatile memory; and using the stored vectors to operate the microcomputer to execute the program portions stored in the ROM to control operation of the meter (100).

Dans un mode de réalisation, la présente invention concerne un procédé permettant de faire fonctionner un compteur d'électricité électronique (100) comportant des capteurs de courant (104) et de tension (106) conçus pour générer des mesures de courant et de tension, respectivement, un microordinateur (114) relié aux capteurs de courant (104) et de tension (106) et présentant sur sa puce de la mémoire morte (ROM) (120) masquée, et une mémoire non volatile, altérable (118) reliée au microordinateur (114). Le procédé consiste : à stocker les vecteurs montrant les parties de programme de la mémoire ROM dans la mémoire non volatile, et à utiliser les vecteurs stockés pour actionner le microordinateur de sorte qu'il exécute les parties de programme stockées dans la mémoire ROM pour commander les opérations du compteur (100).

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