DE2452773A1 - Alternating representation of two alpha-numeric characters - single display uses two complementary colour light sources - Google Patents

Abstract

Means are provided for the alternating switching-on of the complementary colour light sources as well as means for the stopping of one of the light sources by using complementary colour shutters. The shutters are components of a display matrix. Within those components which are used for the display of two alpha-numeric characters, both complementary colours are accommodated in one raster. The indicator matrix consists of a seven segment display. The raster consists of two parallel adjacent elongated surfaces. The transparent components of the seven segment display (1 to 5) are mounted on an otherwise opaque surface.

Description

Arrangement for the alternating display of two alpha-numeric characters.

Prior art It is known by means of two complementary colored Light sources produce two complementary colored images by correspondingly colored panels can be seen individually again. On this one The principle is based, for example, on the well-known stereoscopic film presentation in which the audience by means of glasses, the lenses of which are complementary colored, with each lens hide the opposite colored image.

From digital technology, display matrices are known with which Display alpha-numeric characters, i.e. letters and digits.

These display matrices have a number of components which can be used to produce all alpha-numeric characters. E.g.

the 5 x 7 matrix made up of a rectangular area with a total of 35 luminous dots (Hewlett-Packard types 5082 - 7100 series).

The so-called 7-segment display is specially designed for displaying digits. existing. of 7 lines with which all digits and some letters are represented (Hewlett-Packard types series 5082 - 7740).

Task There is the task of changing in an arrangement Representation of alpha-numeric characters by means of translucent light on a Indicator field, given the size of the characters, the number of display options to double.

The task is accomplished with the means characterized in the claims solved.

Advantages Counter-like devices can in their size be halved. A counter drum with e.g. 10 digits distributed around its circumference is halved in diameter. It then has 2 x 5 of the same size on its circumference Digits.

If the size of the arrangement remains the same, the number of alphanumeric Characters can be doubled without the characters losing size.

For example, the hourly drum (film tape) of a digital watch that originally contains 12 digits, replaced by an hourly drum of the same size, but with a 24 hour display with 2 x 12 unreduced digits. This creates Another surprising advantage is that the hours of the day, e.g. from 7 a.m. to 6 p.m. Clock, in a brightly shining color (e.g. "orange") and the night hours from 19 Clock until 6 o'clock is displayed in a subdued complementary color ("turquoise") will.

Two different types of lettering with two different Colors are reproduced, e.g. for the purpose of traffic control: Red: "Waiting", Green. "Go".

Explanation of the invention Figures la and lb show matrix arrangements for the optional display of 2 digits according to the present invention.

Figure 2 shows an application example in the form of a display drum for a digital watch.

In the figures la and lb are as an example components of a Seven-segment display drawn, in the present case optionally the number Show 1 or the number 3.

The components of the seven-segment display 1 to 5 are as transparent Parts applied to an otherwise opaque surface.

In Figure la, the components 1 to 5 of the seven-segment display elongated bars composed of grid points. The as empty The grid points 6 drawn in squares consist of, for example, a transparent green Colour.

The grid points 7 drawn as black squares exist in the present example of a red permeable color.

Lights up behind this otherwise opaque area, e.g. a green light source, its light only appears on the green, transparent colored parts 6 through the otherwise opaque area and a 3 can be read there the red transparent parts 7 do not allow green light to pass through.

If, however, a red light source is switched on, they are green transparent parts 6 invisible and the red transparent parts light up. It is to recognize a 1.

In Figure 1b the grid is coarsened as much as it is at all is possible. The green transparent parts 16 and the red transparent parts 17 are only elongated bars that are in some components (1, 2, 4) together limits. The same effects occur when shining through with red and green light as in Figure la.

Figure 2 shows the arrangement of the inventive concept as an example with a digital watch. The digital clock is on the front 20 for reading the hours a transparent display window 21.

Behind this display window runs a drum 22 with 12 fields on its circumference. In each field there are components of seven-segment displays in the form of transparent luminous areas as shown in Figure la and lb, for numbers in the following assignment: Table Field color color -. . . ~ 1 7 19 2 8 20 3 9 21 4 10 22 5 11 23 6 12 24 7 13 1 8 14 2 9 15 3 10 16 4 11 17 5 12 18 6 It can be seen from this table that the daytime hours are displayed with one color and the nighttime hours with the other. It is advantageous to use a brightly shining color in the range from red to yellow for the daytime hours and a subdued, complementary color in the range from green to blue for the nighttime hours.

Field 7 from the above table can be seen in display window 21.

Behind the drum 22, which can also be an endless filiri band, 2 light sources 23 and 24 are attached, which are complementary in the exemplary embodiment 2 Radiate colors. They get their light from 2 light bulbs 25 and 26 that pass through the switches 27 and 28 are alternately connected to a power source 29. If the incandescent lamp 26 is switched on, the colored light source 24 and lights up 13 can be read in the display window 21. If, on the other hand, the incandescent lamp 25 is switched on, so the other complementary colored light source 23 and lights up in the display window Number 1 is to be read on 21.

Claims (3)

Claims Arrangement for the alternating display of two alpha-numeric characters on a single display panel with two complementary colored light sources, with means for alternately switching on these light sources as well as means for masking each one of these light sources through complementary colored apertures, d a d u r c h g e -k It is noted that the bezels are part of a display matrix and that within those components that display two alpha-numeric Characters are used, both complementary colors are attached in a grid. 2. Arrangement according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the display matrix is a seven-segment display. 3. Arrangement according to claim 2, d a d u r c h g e k e n n z e i c h n e t that the grid consists of two parallel, adjoining elongated Surfaces.