Two-wire display lighting control structure

Details Two-wire display lighting control structure Two-wire display lighting control structure

1998-06-01

1999-08-31

Wong, Don

Electric lamp and discharge devices: systems

Plural load device systems

Plural discharge device loads

315291, 315316, 315DIG5, H05B 3702

Patent

active

059457899

ABSTRACT:
A two-wire display lighting control structure mainly including a main driver outputting pilot control signals and a plurality of sub-drivers each containing a signal discriminator and a load making circuit and each having a flood light or a light string serially connected thereto. A two-wire conductor is sufficient for use between the main driver and the sub-drivers to serially connect them. The pilot control signals output by the main driver replace first half-cycles of sine waves of an alternating current for supplying power needed by the sub-drivers and individually controlling series-parallel connected flood lights or light strings, so that the flood light or light string connected to a selected sub-driver lightens when it is supplied with power from another half-cycles of the sine waves of the alternating current.

REFERENCES:
patent: 4656398 (1987-04-01), Michael et al.
patent: 5128595 (1992-07-01), Hara
patent: 5420482 (1995-05-01), Phares
patent: 5818338 (1998-10-01), Ferraro

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