Renseignements généraux

Nº de série

1122-10865

Nº de partie

1

Nombre total de parties

1

Ou

S/O

Brevets

S/O

Description générale

FERROUS METAL CASING/ SYNTHETIC SOCKETS, BUTTONS, SWITCHES, PARTS/ METAL SWITCHES & WORKING PARTS/ NON-FERROUS METAL FRONT PANEL

Dimensions

Remarque : Cette information reflète la taille générale pour l’entreposage et ne représente pas nécessairement les véritables dimensions de l’objet.

Longueur

48,2 cm

Largeur

54,6 cm

Hauteur

9,1 cm

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Technologie informatique

Catégorie

Périphériques numériques

Sous-catégorie

S/O

Fabricant

Ou

Norpak

Pays

Canada

État/province

Ontario

Ville

Kanata

Contexte

Pays

Canada

État/province

Ontario

Période

1979-1985

Canada

This decoder was designed, developed and built in Canada as part of a Information Provider Systems 2 (IPS-2) Telidon videotex page creation system. Telidon was created by the Communications Research Centre. The program began on August 15, 1978 and ended on March 31, 1985.

Fonction

This is a videotext decoder that was part of a second generation Information Provider Systems (IPS-2) which was used for Telidon graphics page creation. The purpose of a decoder is to receive the communications data that's transmitted over narrow bandwidth line, which would be the telephone line in this case, and decode and convert it to something that can be put on to a display screen.

Technique

This decoder used a microprocessor and a 1200 baud modem to decode and convert communications data code to something that was displayable on a television display screen. This decoder used a bit plane that is a dot by dot image structure. While the graphic was not high quality, it was quite reasonable and the code was designed to be capable of expanding to handle higher resolutions. The system was designed to be forward and backward compatible, meaning it had the capability of displaying existing and future images, taking advantage of lowering memory costs to improve Telidon technology over time. In 1983, the North American Presentation Level Protocol Syntax (NAPLPS) graphics language develop from the Canadian Telidon system was formalized, ratified and adopted as a world standard for graphics transmission by computer. This decoder was a NAPLPS display processor specifically used by an Information Provider Systems (IPS-2) station possibly manufactured after 1983.

Notes sur la région

Inconnu

Détails

Marques

DECAL ON BACK READING 'norpak corporation/ PART NO. 93-06418-03/ SERIAL 112-10865'/ 'norpak corporation' IN WHITE LETTERING ON BACK/ WHITE OUTLINE LETTERING ON FRONT READING 'IPS-2INFORMATION/ PROVIDER SYSTEM'/ WHITE PRINTING ON FRONT & BACK FOR CONTROL FUNCTIONS/ GREY DECAL READING 'VERIFICATION-CRC/ 85579'

Manque

S/O

Fini

CASING PAINTED BLACK ENAMEL/ WHITE, RED & BLACK SYNTHETIC/ PLATED PARTS

Décoration

S/O