H - Electricity – 04 – M
Patent
H - Electricity
04
M
H04M 17/02 (2006.01)
Patent
CA 2212894
The present invention concerns a public telephone using inductive card debiting comprising besides the microprocessor traditionally made use of in this kind of telephone set, a subsidiary processor for carrying out some of the functions previously performed by said microprocessor, comprising interruption pre-processing, the inter-facing with the keyboard, the generation of auxiliary tones and various timer functions.
La présente invention porte sur un téléphone public utilisant une carte de débit inductive comportant, en plus du microprocesseur traditionnellement utilisé dans ce type de poste téléphonique, un processeur auxiliaire servant à effectuer certaines des opérations effectuées précédemment par ledit microprocesseur, dont le prétraitement des interruptions, l'interfaçage au clavier, la génération de tonalités auxiliaires et diverses opérations de chronométrage.
Di Giorgio Rosana Ceron
Dos Santos Gildemar
Goncalves Luiz Carlos
Pisani Carlos Alberto
Fundacao Cpqd - Centro de Pesquisa E. Desenvolvimento Em Telecom
Gowling Lafleur Henderson Llp
Telecomunicacoes Brasileiras S/a-Telebras
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