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1. WO1981002085 - SYSTEM FOR REMOTE MONITORING AND DATA TRANSMISSION OVER NON-DEDICATED TELEPHONE LINES

Publication Number WO/1981/002085
Publication Date 23.07.1981
International Application No. PCT/US1980/001709
International Filing Date 23.12.1980
IPC
H04M 11/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
MTELEPHONIC COMMUNICATION
11Telephonic communication systems specially adapted for combination with other electrical systems
H04N 7/173 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
16Analogue secrecy systems; Analogue subscription systems
173with two-way working, e.g. subscriber sending a programme selection signal
CPC
H04M 11/002
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
MTELEPHONIC COMMUNICATION
11Telephonic communication systems specially adapted for combination with other electrical systems
002with telemetering systems
H04N 2007/17381
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
16Analogue secrecy systems; Analogue subscription systems
173with two-way working, e.g. subscriber sending a programme selection signal
17381the upstream transmission being initiated by the user terminal
H04N 2007/1739
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
16Analogue secrecy systems; Analogue subscription systems
173with two-way working, e.g. subscriber sending a programme selection signal
1739the upstream communication being transmitted via a separate link, e.g. telephone line
H04N 7/17327
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
16Analogue secrecy systems; Analogue subscription systems
173with two-way working, e.g. subscriber sending a programme selection signal
17309Transmission or handling of upstream communications
17327with deferred transmission or handling of upstream communications
Applicants
Inventors
Priority Data
10962404.01.1980US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEM FOR REMOTE MONITORING AND DATA TRANSMISSION OVER NON-DEDICATED TELEPHONE LINES
(FR) SYSTEME DE CONTROLE A DISTANCE ET DE TRANSMISSION DE DONNEES SUR DES LIGNES TELEPHONIQUES NON SPECIALISEES
Abstract
(EN)
A system, consisting of a plurality of Remote Monitoring Units (19) and a Central Computer (14), for monitoring a subscriber's selection of a Program Source. Each Remote Monitoring Unit has a microprocessor (6), associated Program and Data Memory (4, 5), Control and Interface circuitry (5, 8) and a software implemented real-time-clock (6). The time of day and channel identification of program selected is recorded in memory. Communication with the central office computer is initiated by the remote monitoring unit at preprogrammed intervals over the conventional telephone network using the individual Subscriber's telephone line accessed via a telephone interface device (12). Data sent to the computer consists of a unique identity code for each monitoring unit, channels selected and time of selection. The remote monitoring unit can retransmit the stored data in the event of an unsuccessful contact, and disable the program selector and access device on command.
(FR)
Systeme comprenant une pluralite d'unites de controle a distance (19) et un ordinateur central (14), pour controler une selection d'abonnes d'une source de programme. Chaque unite de controle a distance possede un microprocesseur (6), un programme et une memoire de donnees associes (4, 5), des circuits de commande et d'interface (5, 8) et une horloge en temps reel executee par logiciel (6). L'heure du jour et l'identification du canal du programme selectionne sont enregistres en memoire. La communication avec l'ordinateur de la centrale est initiee par l'unite de controle a distance a des intervalles programmes sur le reseau telephonique conventionnel en utilisant la ligne telephonique individuelle de l'abonne dont l'acces se fait via un dispositif d'interface telephonique (12). Les donnees envoyees a l'ordinateur consistent en un code d'identite unique pour chaque unite de controle, canaux selectionnes et temps de selection. L'unite de controle a distance peut retransmettre les donnees stockees en cas de contact sans succes et invalider le selecteur de programmes et le dispositif d'acces sur commande.
Also published as
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