Robert W Floyd

US Patent:

58217045, Oct 13, 1998

Filed:

May 12, 1997

Appl. No.:

8/854760

Inventors:

Steven R. Carson - Garland TX
Robert Anthony Floyd - Garland TX

Assignee:

The Genlyte Group Incorporated - Secaucus NJ

International Classification:

H05B 3702

US Classification:

315317

Abstract:

A lighting control and dimming system 10 utilizes a single traveler conductor for transmitting analog data signals corresponding to a particular light intensity level of dimmers DIM 1, DIM 2, DIM 3, DIM 4,. . . , DIM N in a dimmer group. A predetermined binary data word is retrieved from the read-only memory of a controller that may be remote from the dimmers, and is transmitted serially in an analog pulse train over the traveler conductor to each dimmer unit. Remote signaling and selection of a specific scene are performed independently of the phase of the applied AC line voltage by sampling the logic values of logic high to logic low and logic low to logic high transitions of a zero cross signal. Dimmers enabled by the transmitted analog data signal produce a predetermined scene at a particular brightness level corresponding with one of the stored binary numbers.

US Patent:

58149503, Sep 29, 1998

Filed:

May 12, 1997

Appl. No.:

8/854550

Inventors:

Steven R. Carson - Garland TX
Robert Anthony Floyd - Garland TX

Assignee:

The Genlyte Group Incorporated - Secaucus NJ

International Classification:

H05B 3702

US Classification:

315317

Abstract:

A lighting control and dimming system utilizes a single traveler conductor for transmitting analog data signals corresponding to a particular light intensity level of dimmers in a dimmer group. A predetermined binary data word is retrieved from the read-only memory of a remote controller and is transmitted serially in an analog pulse train over the traveler conductor to each dimmer unit. Each dimmer unit includes a microcontroller and read-only memory in which a group of binary numbers are stored. The analog data signal received by each dimmer is converted to binary and is compared bit-by-bit with each binary number stored in the dimmer memory. A serial bit comparator produces an enable signal in response to a bit-by-bit identity match between the converted analog data signal and the preset binary number stored in the dimmer ROM. Dimmers enabled by the transmitted analog data signal produce a predetermined scene at a particular brightness level corresponding with one of the stored binary numbers.