Decoder, videotext

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OBJECT TYPE
VIDEOTEX/TELIDON
DATE
1982
ARTIFACT NUMBER
1987.0947.001
MANUFACTURER
Hemton Corp.
MODEL
EPS 1
LOCATION
Ottawa, Ontario, Canada

More Information


General Information

Serial #
8607
Part Number
1
Total Parts
2
AKA
N/A
Patents
N/A
General Description
METAL CABINET/ SYNTHETIC CORDS & BUTTON/ METAL & SYNTHETIC WORKING PARTS

Dimensions

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

Length
48.5 cm
Width
35.0 cm
Height
8.0 cm
Thickness
N/A
Weight
N/A
Diameter
N/A
Volume
N/A

Lexicon

Group
Space Technology
Category
Communications
Sub-Category
N/A

Manufacturer

AKA
Hemton
Country
Canada
State/Province
Ontario
City
Ottawa

Context

Country
Canada
State/Province
Ontario
Period
IF USED - AT NMST OTTAWA, CA. 1983
Canada
Part of videotex technology system designed, developed & built in Canada by the Communications Research Centre. The Telidon program began on August 15, 1978 and ended on March 31, 1985. Artefact was purchased by the National Museum of Science and Technology on October 28th, 1982 as operational equipment for $4050. The object was wither used very little or never used.
Function
The Hemton EPS 1 was an electronic projector system use to decode, demonstrate and display Telidon graphic images onto a color monitor in areas like shopping malls or businesses.
Technical
The Hempton EPS 1 model is an early Telidon decoder that was used & current in 1982. It 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. According to Douglas O’brien, this is essentially a Norpak terminal with memory. It was possible to load and cycle trough data, projecting Telidon graphics. This technology was meant for a different market as it was designed for presentations and displays in places like shopping malls. 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.
Area Notes
Unknown

Details

Markings
STICKER ON BACK: 'LR 49159/ MODEL EPS-1/ SERIAL 8607/ PRINTED ON BACK: 'HEMTON/ NO USER SERVICEABLE/ PARTS INSIDE/ POWER 120 VAC/ 60Hz/ 160W/ UNSWITCHED/ 100 WATTS MAX/ 3 AMP/ COMM/ KPD/ KBD/ SYNC/ XPAR/ TV/ RED/ GRN/ BLU/ REC/ PLY/ WR'/ 'HEMTON/ EPS 1/ STICKER ON BOTTOM: 'norpak/ UNIT EPS+/ BAUDRATE/ TX COMM 1200/ RX 1200/ PARITY/ 0DD/ EVEN/ SPACE/ MARK X/ MODULE/ 36- 05376-01/ 36-05375-01/ 36-05375-02/ 36-05377-01/ 36-05377-02/ REV RB [5 TIMES]/D3472 R1'
Missing
N/A
Finish
BLACK PAINT ON CABINET
Decoration
LOGO AND MODEL NAME IN LARGE DECORATIVE LETTERS ON FRONT

CITE THIS OBJECT

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

Hemton Corp., Decoder, videotext, circa 1982, Artifact no. 1987.0947, Ingenium – Canada’s Museums of Science and Innovation, http://collection.ingeniumcanada.org/en/id/1987.0947.001/

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