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Browse Prior Art Database

Selectively Positionable Indicators

IP.com Disclosure Number: IPCOM000092286D
Original Publication Date: 1968-Nov-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 3 page(s) / 82K

Publishing Venue

IBM

Related People

Thorpe, RA: AUTHOR

Abstract

This apparatus manually selects printed messages for display on a computer type indicator panel. Such messages are usually viewed in association with adjacent indicator lights, or light spots, on the panel which represent signals within the computer. This apparatus is arranged to conserve space within the enclosure behind the panel. A compact arrangement of film and optical lenses is manipulated to project images of selected printed messages along appropriate row areas of a view screen on the panel. These printed messages are interspersed in rows with the associated light spot indications. One or more sources of light behind the film are employed to illuminate the selected message areas of the film.

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Selectively Positionable Indicators

This apparatus manually selects printed messages for display on a computer type indicator panel. Such messages are usually viewed in association with adjacent indicator lights, or light spots, on the panel which represent signals within the computer. This apparatus is arranged to conserve space within the enclosure behind the panel. A compact arrangement of film and optical lenses is manipulated to project images of selected printed messages along appropriate row areas of a view screen on the panel. These printed messages are interspersed in rows with the associated light spot indications. One or more sources of light behind the film are employed to illuminate the selected message areas of the film.

In the arrangement at A, film 1 is illuminated by light from single source 2 backed by parabolic reflector 3. Elongated lenses 4 of semicylindrical shape, located at discrete row positions of a one-piece plastic, clear polymer, lens plate 5 control the size of the projected row message images. Limiting aperture plate 6 restricts transmission of light to panel view screen 7 through the selected row message areas 8 of film 1. The messages appear on screen 7 in rows such as 11 interspersed with rows of light spots 9 projected from lamps 10 connected to system circuits through switches manipulated with the film.

The film, detailed at B, consists of three or more separately controlled frames of film 1a, 1b, and 1c in superimposed registration. These films are individually manipulated vertically to project desired panel message images in all rows of screen 7. The films as a group, or lens plate 5, can be moved horizontally for image focus. Each film contains a vertical set of five message symbol areas for projection in each message symbol position of screen 7. One of these five areas in each set is a clear area, such as unshaded section 12, and the others 13 contain symbols. Thus, by positioning two of the three films with their clear areas in line with the respective lenses 4 of plate 5, e.g., frames 1a and 1c as shown, one of the four symbols in each set 13 of the third film, e.g., frame 1b, can be selectively positioned for viewing. Thus, in this arrangement of three film frames, a choi...