Programmable LED driver

Details Programmable LED driver Programmable LED driver

1999-07-06

2000-11-07

Nguyen, Tan T.

Electronic digital logic circuitry

Interface

Current driving

326 83, 327 53, H03K 190175

Patent

active

061442224

ABSTRACT:
The present invention discloses a high speed programmable electronic current driver circuit for supplying a controlled modulated current to an LED comprising: a current driver operable over a selectable range of current levels for connection to an LED for supplying operating current to an LED; control means connected to the current driver to select the current level for operation of the current driver; transmission gating means connected to the current driver to gate high speed data signal pulses to the current driver to modulate the current of the current driver by the data signal pulses by gating the current of the current driver with the data signal pulses; whereby light output by the LED will be modulated by the data signal pulses at selectable current levels.

REFERENCES:
patent: 5477170 (1995-12-01), Yotsuyanagi
patent: 5608339 (1997-03-01), Fujiwara
patent: 5701133 (1997-12-01), Miller et al.
patent: 5880582 (1999-03-01), Sawada
patent: 5986479 (1999-11-01), Mohan

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