DE2461837C2 - Digital display device with a dot matrix - Google Patents

Description

a: through 16-12-11-10-14-20-21-22,

b: through 3-7-1Ϊ-15-20-21-22-17-12,

c: through 11-10-14-20-21,

d: through 4-8-12-16-21-20-14-10-11, 25

e: through 6-7-12-11-10-14-20-21-22,

f: through 4-3-7-11-15-20-10-12,

g: through 12-7-3-4-5-9-13-17-22-21-15,

h: through 3-7-11-15-20-12-17-22,

i: through 3-11-15-20, 30

j: through 4-12-16-21-20,

k: through 3-7-11-15-20-12-16-22,

1: through 3-7-11-15-20-21,

m: through 19-14-10-15-21-16-12-17-23,

n: through 10-14-19-15-12-16-21, 35

o: through 11-10-14-20-21-16,

p: through 16-17-13-8-3-7-11-15-20,

q: through 22-16-11-10-14-20-21,

r: through 10-11-12-15-20,

s: by 13-12-16-21-20, or by 13-8-7-11-16-21-20-14, 40

t: through 3-7-11-15-20-6-8,

u: through 10-14-20-21-16-12,

v: through 10-15-21-16-12,

w: by 10-15-21-16-12-17-23-18, or by 1-6-11-7-3-8-13-9-5,

x: through 10-15-20-12-16-22, 45

y: through 6-11-8-12-16-21,

z: through 6-7-8-12-16-21-22-23.

The invention relates to a digital display device as described in the preamble of claim 1 or of claim 2 specified genus. Such digital display devices are used to deliver static advertisements or to generate a ticker. A summary of alphanumeric Display systems is described in the magazine "radio mentor 1972, issue 10, pages 478-482". Here 55 describes the widespread seven-segment displays, especially those used to display digits to be used. However, there are also known display systems with a dot matrix, for example a 7x5 Matrix, a 7x9 matrix or a 5x9 dot matrix.

The pre-characterizing version of claims 1 and 2 is based on a display device according to US-PS 49 226 or US Pat. No. 3,076,187. In the display device according to the first-mentioned US Pat is formed, the light-emitting elements are arranged line by line over the entire line of text, and one Subdivision into individual fields is not provided. In the display device according to US-PS 30 76 187 is each matrix field is divided into no less than 136 display points. Despite this multitude of matrix putti the result is not a particularly clear representation, because each character is only used by one with regard to the line width single light-emitting element is formed, which in comparison to the surface extension of the matrix field 65 has a very small diameter.

The invention is based on the object of creating a display device of the type mentioned at the beginning, which manages with a small number of individual light-emitting elements and is still able to produce a

to deliver a large number of characters in an easily legible manner.

According to the invention, this object is achieved for numerical characters by the features in the characterizing part Part of claim 1 and for alphanumeric characters by the features in the characterizing part of claim 2.

The invention creates a dot matrix in which the characters and symbols shown are clearly legible and distinguishable from one another and still have an aesthetic appearance. Included the result is a pleasing typeface because the characters are inclined to the right at an angle of approx. 60 °.

Such a tendency of character representations is known from DE-OS 20 06 983, but here no dot matrix used for representation, but straight and curved in a certain way Segment sections.

The invention makes it possible to clearly display each digit and many other characters with just 16 points to represent.

Although the display device according to US-PS 35 76 099 comes through an even smaller number of luminous dots off, namely with 13 luminous dots per number, but at the expense of a clear representation, because the characters are distorted according to the "angular" seven-segment representation.

Two exemplary embodiments of the invention are described below with reference to the drawing. In the Drawing show:

Fig. 1 is a schematic view of a dot matrix consisting of 16 light-emitting elements with the Representation of the digits from 0 to 9;

F i g. Figure 2 is a view of a 24 point matrix;

F i g. 3 one of the F i g. 1 Corresponding view of all digits, letters with ascender and descender and various mathematical symbols represented with the 24-point matrix according to FIG. 2;

F i g. 4 a schematic representation of a circuit diagram for the individual excitation of predetermined, light-emitting Elements.

First of all, reference is made to FIG. 1 of the drawing is referred to. A dot matrix is provided here, which is derived from FIG Each light emitting element is formed as a circle or circular point shown, but other geometric designs, in particular hexagons or ovals, are also conceivable, as long as they can be nested closely together. According to the embodiment according to FIG. 1, each digit is made up of 16 light emitting elements supported by a frame 22 and as seen by the viewer, are arranged in 5 horizontal lines with 3 or 4 elements each. In the dot matrix according to FIG. 1 there are 3 upper lines and a lower line with 3 elements each, and one Line (the second line seen from below) contains 4 elements. The elements are closely nested, similar to a mosaic, which consists of adjoining hexagons, so that more element columns are formed, which as seen by the viewer at about 60 ° to the right and left relative to the horizontal are inclined. This means that some letters, numbers and symbols, especially those with long parts, which are usually vertical, e.g. B. the digits 1 and 0, the letters with ascenders, z. B. D, E, F, I etc. and many other letters, e.g. B. Lowercase letters with ascenders like b, d, f, h, i, t etc. slanted to the right appear which is both pleasing in appearance and also with generally accepted practice for example matches in italics

The arrangement of the rows is such that 4 multi-element columns are inclined to the right, each of the Columns counted from left to right contains 4 or 5.5 or 2 elements. Likewise, 5 are inclined to the left Columns formed which, viewed from left to right, contain 2 or 3 or 4 or 4 or 2 elements. With the Matrix one is able to represent all digits, as shown in FIG. 1 is shown In addition, may A large number of upper and lower case letters are shown alongside math and punctuation marks will. When the elements are numbered sequentially from 1 to 16 as shown in FIG. 1 is shown, by counting the horizontal elements line by line, then all digits can be achieved by suitable excitation a certain number of light-emitting elements can be represented. For example, this makes the number 1 shown that elements 2,5,8,11 and 14 or elements 3,6,9,12,15 are energized. The number "3" can can be represented by energizing elements 1, 2, 6, 8, 9, 13 to 16, while the number "4" is energized by the Excitation of the elements 1,3,4,6,7 to 9 and 12 as well as 15 can be written.

According to a further embodiment according to FIG. 2 and 3 is a dot matrix of 24 light emitting Elements 30 are provided which are densely nested in horizontal rows and columns that like at F i g. 1 are inclined. The arrangement of the matrix arranged in a frame 32 consists of FIG Rows that have 5 or 4 or 4 or 5 or 6 elements, which in turn have 5 multi-element columns arise which, as seen by the viewer, are about 60 ° to the right and left relative to the horizontal lines are inclined. Viewed from left to right, the columns have 4 columns with 5 elements and 1 column with 2 Elements on. The first and last columns only consist of a single element

With the embodiment according to FIG. 2 and 3 it is possible to use all digits and upper and lower case letters as well as various mathematical symbols and punctuation symbols. Also are alternative Ways are conceivable to represent selected characters, for example the digits 1 and 2 as shown, can be written differently and also the letters A, B, E and V as well as X. Furthermore, the Letters a, b, e and w are spelled differently. All of these letters, numbers and symbols can for the most part easily recognized, because they correspond very largely in form and basic appearance to the usually accepted form and correspond in their overall picture to a special letter of a Digit or a symbol

If z. B. denotes the elements of the dot matrix from 1 to 24 consecutively from left to right line by line it is easy to find out which elements make up a letter or number. For representation the numbers 2, 3, 8, 12, 16 and 21 to 23 excite. To represent the lowercase letter "j", the elements are excited

4, 12, 16, 20 and 21. To represent a lowercase "s", the elements 7, 8, 11, 14, 20 and 21 are excited. To one Representing the capital letter "E" will energize items 2 through 4, 6, and 10 through 12, 14, and 19 through 21. Other Combinations are easily made due to their alphanumeric form.

The alphanumeric representation of light-emitting elements is particularly suitable for use for quick identification of electrically operated devices, e.g. B. from measuring instruments, recording devices, from a computer or from display devices. In applications in which factors such as minimal size, low power consumption and rapid response are particularly desirable, the light-emitting elements can be designed as light-emitting diodes. 4 shows an example of a semiconductor circuit for exciting a dot matrix consisting of 16 light-emitting diodes, only 4 of the 16 diodes being shown in the circuit diagram. In addition, the circuit diagram shows the switching arrangement for controlling the excitation of preselected light-emitting diodes. In the system shown, the light-emitting diodes 40, 41, 42 and 43 are connected in series with one another and to the emitter of the transistor Qp, which serves as a constant current source. The collector of the transistor Qp is connected to a terminal 44 to which a voltage is applied. The base is connected to the collector via a base resistor 46. The connection of each light emitting diode according to a certain symbol or character is achieved in that each diode is connected to a transistor which, when it is conductive, acts as a short circuit and switches off the respective light emitting diode.

The collector-emitter circuits of the transistors Qi, Q ₂ , Q3 ■ ■ ■ Qie are each connected in parallel to the light-emitting diodes 40, 41, 42 ... 43, and the base electrodes of the transistors are connected to generators, for example a group of current sources, which manually or by a computer or according to the output of a decoder, whereby the respective character is written. The character generator supplies signals that switch on the transistors that short-circuit the light-emitting diodes that are not required for a particular character. If z. B. the representation according to FIG. 1 is used and the number "4" is to be written, then the light-emitting diodes corresponding to elements 1, 3, 4, 6, 7, 8, 9, 12 and 15 are activated, and those transistors that control other elements are switched on. thereby preventing the corresponding remaining diodes from being energized.

The circuit creates a static representation. It will be understood, however, that other circuits will be used which are known in their structure and not only static representation, but dynamic representations allow the emitters to be energized in rapid succession. Dynamic representations have numerous Applications Advantages, in particular to simplify the display in connection with a computer.

For this purpose 2 sheets of drawings

Claims (2)

Patent claims: 1. Digital display device comprising a dot matrix of selectively excitable light emitting elements for each field, with the light emitting elements equidistant from one another in each dot matrix arranged on five lines lying one above the other and the lines are offset from one another with gaps, characterized in that the rows of each dot matrix with light emitting elements (20) in the following arrangement are formed: top line: three elements (1,2,3); second line: three elements (4,5,6) offset to the left by half a division compared to the top row; third line: three elements (7,8,9) offset from the second row to the left by half a division; is fourth line: four elements (10,11,12,13) protrude evenly to the left and right over the third row; bottom line: three elements (14,15,16) symmetrical about the center of the fourth row in the same arrangement as in the third line, and that with consecutive numbering of the elements from 1 to 16 line by line from top left to bottom right the digits are represented as follows: 1: through elements 2-5-8-11-14, 2: through 1-2-6-9-8-11-14-15-16, 3: through 1-2-6-9-8-13-14-15-16, 4: through 1-3-4-6-7-8-9-12-15, 5: through 3-2-1-4-8-9-13-16-15-14-10, 6: through 2-5-8-11-15-16-13-9, 7: through 1-2-3-6-9-12-15, 8: through 1-2-6-9-8-11-15-16-13-4, 9: through 8-4-1-2-6-9-12-15, 0: through 1-2-6-9-12-15-14-10-7-4. 2. A digital alphanumeric display device with a dot matrix of selectively excitable light-emitting elements for each field, the light-emitting elements in each dot matrix being equidistantly spaced arranged from each other on five superimposed lines and the lines against each other with gaps are offset, characterized in that the rows of each dot matrix with light emitting elements (30) in the following arrangement are formed: top line: five elements (1,2,3,4,5); second line: four elements (6,7,8,9) symmetrical about the center of the first row; third line: four elements (10, 11, 12, 13) opposite the elements of the second row to the left by half Pitch offset; fourth line: five elements (14,15,16,17,18) symmetrically with respect to the middle of the third row on both sides equally protruding; bottom line: six elements (19,20,21,22,23,24) symmetrical about the middle of the third and fourth lines, and so that with consecutive numbering of the elements from 1 to 24 line by line from top left to right below the characters are represented as follows: 1: through the elements 2-3-7-11-15-20-19-21, 2: by 2-3-8-12-16-21-22-23 or by 2-3-8-12-11-15-20-21-22, 3: through 2-3-8-12-11-17-22-21-20, 4: through 2-6-10-11-12-13-4-8-12-16-21, 5: through 4-3-2-6-11-16-21-20-14, 6: through 3-7-11-15-21-22-17-12, 7: through 2-3-4-8-12-16-21, 8: through 3-3-8-12-17-22-21-15-11-6, 9: through 11-6-2-3-8-12-16-21, 0: through 2-3-8-12-16-21-20-14-10-6, A: through 3-7-11-15-20-8-13-18-24-16-17, B: through 3-7-11-15-20-2-4-9-13-18-23-22-21-12, C: through 4-3-2-6-10-14-20-21-22-17, D: through 2-3-4-9-13-17-22-21-20-19-15-11-7, E: through 4-3-2-6-10-14-19-20-21-22-11-12, F: through4-3-2-6-10-14-19-ll-12, G: through 4-3-2-6-10-14-20-21-22-17-13-12, H: through 2-6-10-14-19-5-9-13-17-22-11-12, I: through 3-7-11-15-20, J: through4-8-12-16-21-20-14, K: through 2-6-10-14-19-4-8-12 11-16-22-23, 5 L: through 2-6-10-14-19-20-21-22, M: through 1-6-11-16-3-8-i3-18-24-12-10-14-19, N: through 2-6-10-14-19-5-9-13-17-22-7-12, O: through 2-3-4-9-13-17-22-21-20-14-10-6, P: through 11-12-13-9-4-3-2-6-10-14-19, io Q: through 16-17-13-9-4-3-2-6-10-14-20-21-22-23-24, R: through 23-22-16-11-12-13-9-4-3-2-1-6-10-14-19, S: by 9-4-3-7-12-17-22-21-15, or by 9-4-3-2-6-11-12-17-22-21-20-14, T: through 1-2-3-4-5-7-11-15-20, U: through 2-6-10-14-20-21-22-17-13-9-5, 15 V: through 1-6-11-16-22-17-13-9-5, W: through 1-6-11-16-22-17-13-9-5-3-8-18-24, X: by 2-7-12-17-23-4-8-16-21, or by 1-6-11-15-20-4-8-12-17-23, Y: through 1-6-11-4-8-12-16-21, Z: through 1-2-3-7-11-15-20-21 22, 20