U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Light control system

Patent 4095139 Issued on June 13, 1978. Estimated Expiration Date: Icon_subject June 13, 1995. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3265932

3491263

Inventors

Application

No. 798259 filed on 05/18/1977

US Classes:

315/153, Selective energization of the load devices315/158, Radiant energy controlled regulation of the current supply for the load device315/293, Pre-selectable regulator systems315/294, Plural load device regulation315/315Electrically controlled load device switch

Examiners

Primary: Smith, Alfred E.
Assistant: Roberts, Charles F.

Attorney, Agent or Firm

International Classes

H05B 037/02
H05B 039/04

Abstract

A light control system for selectively controlling the light intensity levels of a plurality of light groups, each group including one or more lights, is disclosed. The system comprises a control for generating a parallel binary-coded signal representative of a predetermined current level to be applied to a particular light group; a signal generator for providing (1) a unique and predetermined serially-coded address signal corresponding to the particular light group and, (2) a serially-coded data signal representative of the current level in response to the parallel binary-coded signal, and; a plurality of receivers, at least one for each light group for applying the current level to the particular light group only in response to the address signal and data signal. A common wire bus for transmitting the address and data signals from the signal generator to each of the receivers is utilized to substantially reduce the wiring required.

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