LED matrix current control system

Details LED matrix current control system LED matrix current control system

1999-07-22

2000-12-12

Wong, Don

Electric lamp and discharge devices: systems

Plural power supplies

Plural cathode and/or anode load device

3151692, 345 82, 345 44, 345 46, G09G 310

Patent

active

061603546

ABSTRACT:
A system for controlling the current supplied to an LED array includes an LED register which sends out individual signals to enable respective LED's. A plurality of drivers are provided, whose outputs are tied together and supply the power to the LED array. A plurality of logic blocks controls the enablement of the plurality of drivers. Each logic block is in communication with the LED register to determine a number of LED's enabled. Each logic block enables a respective driver depending on a number of the LED's enabled.

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patent: 4967192 (1990-10-01), Hirane et al.
patent: 5138310 (1992-08-01), Hirane et al.
patent: 5751263 (1998-05-01), Huang et al.
patent: 6014119 (2000-01-01), Staring et al.

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