Decoder, videotext

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OBJECT TYPE
VIDEOTEX/TELIDON
DATE
1979
ARTIFACT NUMBER
1985.0379.001
MANUFACTURER
Norpak Corp.
MODEL
IPS-2
LOCATION
Kanata, Ontario, Canada

More Information


General Information

Serial #
1122-10865
Part Number
1
Total Parts
1
AKA
N/A
Patents
N/A
General Description
FERROUS METAL CASING/ SYNTHETIC SOCKETS, BUTTONS, SWITCHES, PARTS/ METAL SWITCHES & WORKING PARTS/ NON-FERROUS METAL FRONT PANEL

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length
48.2 cm
Width
54.6 cm
Height
9.1 cm
Thickness
N/A
Weight
N/A
Diameter
N/A
Volume
N/A

Lexicon

Group
Computing Technology
Category
Digital peripheral devices
Sub-Category
N/A

Manufacturer

AKA
Norpak
Country
Canada
State/Province
Ontario
City
Kanata

Context

Country
Canada
State/Province
Ontario
Period
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.
Function
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.
Technical
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.
Area Notes
Unknown

Details

Markings
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'
Missing
N/A
Finish
CASING PAINTED BLACK ENAMEL/ WHITE, RED & BLACK SYNTHETIC/ PLATED PARTS
Decoration
N/A

CITE THIS OBJECT

If you choose to share our information about this collection object, please cite:

Norpak Corp., Decoder, videotext, circa 1979, Artifact no. 1985.0379, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1985.0379.001/

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