DE2452773C3 - Arrangement for the alternating display of two a-numeric characters - Google Patents

Description

_25th

State of the art

It is known to produce two complementary colored images by means of two complementary colored light sources that can be viewed individually through appropriately colored panels. The well-known stereoscopic film presentation, in which the audience is based, is based on this principle by means of glasses whose lenses are colored in a complementary manner fade out the opposite colored image with each glass.

Display matrices are known from digital technology with which alpha-numeric characters, that is, letters and numbers. These display matrices have a number of components, from which all alpha-numeric characters can be represented. So there is z. B. the 5 X 7 matrix a rectangular area with a total of 35 luminous dots (Hewlett-Packard types series 5082 - 7100).

The so-called 6-segment display, consisting of 7 lines, is specially designed for displaying digits. with which all digits and some letters can be represented (Hewlett-Packard types Series 5082 - 7740).

There are known gas discharge arrangements for the multicolored display of information in which in a single common discharge space to stimulate light emission for different Basic colors the arrangements of the leads are made so that each one conductor to excite one single basic color is suitable, while the return line is common to all basic colors (DE-OS 2252256).

There are also known electrical display elements, in which by heating the light elements a color change is brought about (DE-OS 2226085).

Furthermore, there are arrangements for local changes ^ · tion of the brightness and / or the color of a display layer known, in which the change by changeable electrical voltage distribution is generated

30th

35

40

50

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(DE-OS 2032023).

It is also known to use the symbols light in for the illumination of symbols of luminous circuit diagrams In the form of light guide bodies, either the light guide body or the associated incandescent lamps are designed in different colors (DD-PS 15536).

Also known is a matrix of liquid crystals, the control of which is carried out by peripheral shift registers takes place (U.S. Patent 3,840,695).

Furthermore, a gas discharge display is known with discharge elements arranged in tripods three basic colors with a 3-group system of power supplies to the discharge cells by adding these groups are each offset by 120 ° and each group is connected to the discharge cells of one of the three Primary colors is attached (US-PS 3790841).

It is also known to be published in FUNKSCHAU 1973, issue 12, page 433 »Exhibition report: Semiconductors «, right column, paragraph 3. Here, light-emitting diodes are listed which, depending on the polarity of the emit different colored light flowing through it.

task

It is the task of an arrangement for the alternating representation of alpha-numeric characters by means of translucent light on a display field for a given size of the characters the number of Double display options.

The object is achieved with the means characterized in the claims.

advantages

Devices that act like meters can be halved in size. A counter drum with E.g. 10 digits distributed around its circumference is halved in diameter. She then wears on her perimeter 2x5 numbers of the same size.

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 hour drum (- film tape -) of a digital clock, which originally contains 12 digits, is replaced by an hourly drum of the same size, but with a 24-hour display with 2 X 12 undiminished Digits. Another surprising advantage is that the hours of the day, e.g. from 7 a.m. to 6 p.m., in a brightly shining color (e.g. "orange") and the night hours from 7 p.m. until 6 o'clock in a subdued, complementary color (e.g. "turquoise").

Two different lettering with two different colors can be shown on a display field e.g. for the purpose of traffic control: Red: »Waiting«, Green: »Going«.

Explanation of the invention

Fig. 1a and 1b show matrix arrangements for _b0 optional display of 2 digits according to the present invention.

Fig. 2 shows an application example in the form of a display drum for a digital clock.

In Figs. Ia and Ib, as an example inventory _b5 parts of a seven-segment display drawn, optionally show in the present case, the numeral "1" or the numeral "3".

The components 1 to 5 of the seven-segment

show are applied as transparent parts on an otherwise opaque surface.

In Fig. La, the components 1 to 5 are the Seven-segment display - elongated bars made up of grid points. The as empty Grid points 6 drawn in squares consist of a color that is transparent to green, for example.

The grid points 7 drawn as black squares consist of one in the present example red-translucent color.

If a green light source shines behind this otherwise opaque surface, it will appear Light only emits at the green-transparent grid points 6 through the otherwise opaque surface, and a »3« can be read, since the red-transparent grid points 7 do not allow any green light to pass through.

If, on the other hand, a red light source is switched on, the green-transparent grid points 6 are invisible and the red-transparent grid points 7 light up. A "1" can be seen.

In Fig. 1b the grid is a bar arrangement coarsened. The green-transparent bars 16 and the red-transparent bars 17 border on Embodiment in some components (1, 2, 4) to each other. It occurs when candling with red and green light have the same effects as in Fig. la.

Fig. 2 shows as an example the arrangement of the inventive concept with a digital watch. On the front 20 of the digital clock is located for reading the hours a transparent display window 21. Behind this display window runs a drum 22, which has 12 fields on its circumference. In any case, components of seven-segment displays are in Form of transparent luminous surfaces according to Fig. 1a and 1b attached, specifically for digits in following assignment:

Tabel
Color I.

Color II

10
11
12th
13th
14th
15th
16
17th
18th

19th

20th

21

22nd

23

24

It can be seen from this table that the daytime hours with one and the nighttime with the other Color are displayed. It is advantageous to use a bright, glowing color for the daytime hours use a subdued, complementary one in the range from red to yellow and for the night hours Color ranges from green to blue.

Field 7 from the table above can be seen in the display window 21 (according to Fig. 2).

Behind the drum 22, which can also be an endless film belt, 2 light sources 23 and 24 are attached, which in the embodiment 2 emit complementary colors. They get their light from 2 light bulbs 25 and 26, which are alternately connected to a power source 29 by switches 27 and 28 will. If the incandescent lamp 26 is switched on, the colored light source 24 lights up, and in the display window 21 is the "13" to read. If, however, the incandescent lamp 25 is switched on, the other one lights up complementary colored light source 23, and the number "1" can be read in the display window 21.

For this purpose 2 sheets of drawings

Claims (3)

Patent claims: 1. Arrangement for the alternating display of two alphanumeric characters on a single; en Display field with two complementary colored light sources, with means for alternating Switching on these light sources and means for masking out one of these light sources by complementary colored screens, characterized in that the screens are constituent parts are a display matrix and that within those components that the display of two alpha-numeric Characters are used, both complementary colors are attached in a grid. 2. Arrangement according to claim 1, characterized in that the display matrix is a seven-segment display is. 3. Arrangement according to claim 2, characterized in that that the grid consists of two parallel, adjacent elongated surfaces consists.