FR2521753A1 - Seven-segment LED display esp. for electronic clock - has additional point diodes at corners of display to improve readability - Google Patents

Seven-segment LED display esp. for electronic clock - has additional point diodes at corners of display to improve readability Download PDF

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Publication number
FR2521753A1
FR2521753A1 FR8202831A FR8202831A FR2521753A1 FR 2521753 A1 FR2521753 A1 FR 2521753A1 FR 8202831 A FR8202831 A FR 8202831A FR 8202831 A FR8202831 A FR 8202831A FR 2521753 A1 FR2521753 A1 FR 2521753A1
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FR
France
Prior art keywords
diodes
corners
display
segments
esp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR8202831A
Other languages
French (fr)
Inventor
Jean-Luc Mazoyer
Maurice Gorgy
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GORGY TIMING
Original Assignee
GORGY TIMING
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GORGY TIMING filed Critical GORGY TIMING
Priority to FR8202831A priority Critical patent/FR2521753A1/en
Publication of FR2521753A1 publication Critical patent/FR2521753A1/en
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes

Abstract

The LED display includes a double band of individual diodes formed in a figure of eight outline. The outline has more curved corners than the conventional right angle corners of other displays. This serves to make the character displayed more easily readable. Individual diodes (1-6) at the corners of the display are controlled from the data lines via a system of OR-gates. If for example the top line and upper right line are used for a character, then an OR-gate linking the two relevant data lines will be active, and thus operate the individual diode (1) in the top right hand corner. Five other logic gates are arranged to control the operation of diodes at the other corners of the display.

Description

La presente invention concerne un affichage numérique composé par des diodes électroluminescentes pouvant être utilisé notamment quoique non exclusivement pour l'affichage de l'heure dans des horloges de grandes dimensions. The present invention relates to a digital display composed by light-emitting diodes which can be used in particular although not exclusively for displaying the time in large clocks.

On utilise actuellement des affichages a diodes électroluminescentes, les chiffres sont formés par sept segments. Les sept segments éclairés forment un huit, on compose les chiffres de zéro à neuf en éclairant et en éteignant certains segments. Chaque segment se compose généralement d'une rangée de diodes ce qui ne permet pas une bonne lisibilité à une distance supérieure à trente mètres. Currently using LED displays, the numbers are formed by seven segments. The seven illuminated segments form an eight, the digits from zero to nine are composed by lighting up and switching off certain segments. Each segment generally consists of a row of diodes which does not allow good readability at a distance greater than thirty meters.

Dans le cas où le segment se compose de deux rangées de diodes afin d'avoir une meilleure lisibilité, ce segment va avoir une structure rectangulaire ce qui complique les problèmes d'emboitage et de juxtaposition des segments dans le but d'obtenir un affichage numérique. In the case where the segment consists of two rows of diodes in order to have better readability, this segment will have a rectangular structure which complicates the problems of fitting and juxtaposition of the segments in order to obtain a digital display. .

La présente invention s'inspire de cette technique pour réaliser un produit nouveau destiné notamnent à la réalisation d'horloge numérique de grandes dimensions. The present invention is inspired by this technique to produce a new product intended in particular for the production of large digital clock.

La particularité de cet affichage permet de composer des chiffres de grandes dimensions par deux rangées de diodes par segment pour avoir une lisibilité à une distance supérieure à trente mètres. The particularity of this display makes it possible to compose large digits by two rows of diodes per segment to have readability at a distance greater than thirty meters.

Pour faciliter la lecture et réduire le nombre de diodes, nous disposons une diode à chaque extrémité des segments, au total six diodes pour un affichage numérique et chacune de ces diodes sera commune à deux ou trois segments. Elles permettent d'avoir des extrémités de segments toujours à la même hauteur et à la même distance l'une par rapport aux autres. To facilitate reading and reduce the number of diodes, we have a diode at each end of the segments, a total of six diodes for a digital display and each of these diodes will be common to two or three segments. They make it possible to have segment ends always at the same height and at the same distance from one another.

Pour arriver à ce résultat, un système électronique de décodage supplémentaire a te réalisé. To achieve this result, an additional electronic decoding system has been implemented.

L'invention sera mieux comprise à la lecture de la description qui va suivre et en se référant aux dessins annexés. The invention will be better understood on reading the description which follows and with reference to the accompanying drawings.

Figure 1 : dessin de l'affichage numérique
Figure 2 : schéma synoptique
A titre d'exemple, la figure i représente un affichage numérique sept segments, les diodes allumées forment le chiffre 2.Figure 1: drawing of the digital display
Figure 2: block diagram
By way of example, FIG. I represents a seven-segment digital display, the lit diodes form the number 2.

La figure 1 montre l'affichage numérique avec sa double rangée de diodes par segments et les diodes 1, 2, 3, 4, 5, 6 disposées aux extrtiités et chacune de ces diodes dites d'extrémité est commune a chaque ensemble de segments adjacents. Figure 1 shows the digital display with its double row of diodes per segment and the diodes 1, 2, 3, 4, 5, 6 arranged at the ends and each of these so-called end diodes is common to each set of adjacent segments .

Ainsi : la diode 1 est commune aux segments A et B
Ia diode 2 est commune aux segments B, C et G
la diode 3 est commune aux segments C et D
la diode 4 est commune aux segments D et E
la diode 5 est commune aux segments E, F et 6
la diode 6 est commune aux segments A et. F
La distance entre le centre de la diode I et le centre de la diode 2 est la mime que celle entre le centre de la diode 2 et celui de la diode 3, et cela pour chaque segment. Ce qui permet un emboitage des segments plus facile en rendant commune ces diodes dites d'extrémité a deux ou trois segments.Thus: diode 1 is common to segments A and B
Diode 2 is common to segments B, C and G
diode 3 is common to segments C and D
diode 4 is common to segments D and E
diode 5 is common to segments E, F and 6
diode 6 is common to segments A and. F
The distance between the center of diode I and the center of diode 2 is the same as that between the center of diode 2 and that of diode 3, and this for each segment. This allows an easier fitting of the segments by making these so-called end diodes common to two or three segments.

Comme le montre la figure 1, nous réalisons un décodage électronique spécial supplémentaire pour les diodes électroluminescentes 1, 2, 3, 4, 5, 6 tout en conservant le décodage classique sept segments pour les segments A, B, C, D, E, F, G
Par exemple, la diode i doit s'éclairer lorsque le segment
A est éclairé ou lorsque le segment B est éclairé. As shown in figure 1, we carry out an additional special electronic decoding for the light-emitting diodes 1, 2, 3, 4, 5, 6 while preserving the classic decoding seven segments for the segments A, B, C, D, E, F, G
For example, diode i should light up when the segment
A is lit or when segment B is lit.

Le décodage de la diode 1 sera donc réalisé a partir d'une porte logique "ou" entre A et B. The decoding of the diode 1 will therefore be carried out from a logic gate "or" between A and B.

Le même principe sera appliqué aux cinq autres diodes qui permettent de réaliser l'ensemble du décodage des six diodes d'extrémité représenté figure 2. The same principle will be applied to the other five diodes which allow all of the decoding of the six end diodes shown in FIG. 2 to be carried out.

La présente invention s'applique plus particulièrement mais non exclusivement aux horloges à affichage numérique.  The present invention applies more particularly but not exclusively to clocks with digital display.

Claims (2)

REVENDICATIONS 1 - Dispositif de décodage permettant de composer un affichage numérique sept segments pour une lisibilité supérieure à trente mètres,caractérise en ce que les segments sont formés par une double rangée de diodes électroluminescentes et de six diodes dites d'extrémité communes à deux ou trois segments. 1 - Decoding device making it possible to compose a seven-segment digital display for readability greater than thirty meters, characterized in that the segments are formed by a double row of light-emitting diodes and six so-called end diodes common to two or three segments . 2 - Dispositif selon la revendication 1 caractérisé par la longueur et le nombre de diodes électroluminescentes sur chaque double rangée de diodes d'un segment sont identiques pour les sept segments.  2 - Device according to claim 1 characterized by the length and the number of light emitting diodes on each double row of diodes of a segment are identical for the seven segments.
FR8202831A 1982-02-17 1982-02-17 Seven-segment LED display esp. for electronic clock - has additional point diodes at corners of display to improve readability Withdrawn FR2521753A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8202831A FR2521753A1 (en) 1982-02-17 1982-02-17 Seven-segment LED display esp. for electronic clock - has additional point diodes at corners of display to improve readability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8202831A FR2521753A1 (en) 1982-02-17 1982-02-17 Seven-segment LED display esp. for electronic clock - has additional point diodes at corners of display to improve readability

Publications (1)

Publication Number Publication Date
FR2521753A1 true FR2521753A1 (en) 1983-08-19

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Application Number Title Priority Date Filing Date
FR8202831A Withdrawn FR2521753A1 (en) 1982-02-17 1982-02-17 Seven-segment LED display esp. for electronic clock - has additional point diodes at corners of display to improve readability

Country Status (1)

Country Link
FR (1) FR2521753A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5008870A (en) * 1988-06-28 1991-04-16 Vessa James R FIFO clock

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2298836A1 (en) * 1975-01-24 1976-08-20 Bizerba Werke Kraut Kg Wilh Electronic seven segment display with checking system - uses seven double segments with parallel drive converters connected to comparator
US4086514A (en) * 1975-09-15 1978-04-25 Karel Havel Variable color display device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2298836A1 (en) * 1975-01-24 1976-08-20 Bizerba Werke Kraut Kg Wilh Electronic seven segment display with checking system - uses seven double segments with parallel drive converters connected to comparator
US4086514A (en) * 1975-09-15 1978-04-25 Karel Havel Variable color display device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ELECTRONICS, vol. 49, no. 12, 10 juin 1976, pages 129-130, New York (USA); *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5008870A (en) * 1988-06-28 1991-04-16 Vessa James R FIFO clock

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