DYNAMIC LIGHTING DEVICE FOR 7-SEGMENT LED

DYNAMIC LIGHTING DEVICE FOR 7-SEGMENT LED

PURPOSE:To reduce the number of control lines between a display part and a display control part and power consumption by using commonly the segment terminal of a 7-segment LED of each digit by performing multiple connection, and dynamically emitting light from the LED of each digit sequentially by p...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: HORIBE TOSHIO
Format: Patent
Sprache:eng
Schlagworte:
ADVERTISING
ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION
CRYPTOGRAPHY
DISPLAY
EDUCATION
PHYSICS
SEALS
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Beschreibung
Zusammenfassung:PURPOSE:To reduce the number of control lines between a display part and a display control part and power consumption by using commonly the segment terminal of a 7-segment LED of each digit by performing multiple connection, and dynamically emitting light from the LED of each digit sequentially by providing a 7-segment LED switching control circuit. CONSTITUTION:The output terminals Q0-Q3 of frequency count circuits 703-705 are connected to the 7-segment LED switching control circuit 702 via the control lines 901-912, and switching is performed at speed over the one visible with the human eye. The input terminals of the 7-segment LEDs 201-20n of each digit are multiple-connected in the display part 101 with the control lines 301-307, and plural 7-segmen LEDs 201-20n in the display part 101 are sequentially and dynamically lit with the 7-segment switching control circuit 702. In such a way, it is possible to reduce the number of control lines 601-607 and 401-40n between the display part 101 and the display control part 102 and the power consumption.