4551

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Tektronix 4551
Light pen system

Produced from 1971 to (?)

Manuals
(All manuals in PDF format and OCRed unless noted otherwise)
Manuals – Specifications – Links – Pictures

The Tektronix 4551 is a light pen system. When used in any 525/60 or 625/50 line TV system, it produces a cursor overlaid on the TV image that tracks the position of a pen as the user moves it across the TV screen.

It is also designed to interface directly with a 4501 scan converter in a configuration enabling the user to "write" on the image. When the user presses the pen against the display, a switch in the pen tip activates the write function, converting pen movements to stored images on the 4501. The 4501 scans the stored image and produces an NTSC output.

Key Specifications

  • please add

Links

Documents Referencing 4551

Document Class Title Authors Year Links
History of the Information Display Division - John Lamb, June 1974.pdf Article History of the Information Display Division John Lamb 1974

Patents that may apply to 4551

Page Title Inventors Filing date Grant date Links
Patent US 3594608A Electron beam display system having light detector pen with associated sampling and memory circuits Jon C. Mutton 1969-05-12 1971-07-20

Prices

$1,800 in 1971 (~$14,200 in 2025 dollars)

Internals

The pen is passive, it has a fiberoptic connection to the base unit where a 931A photomultiplier serves as the light detector.

Pictures