Source: https://patents.google.com/patent/US20100295454A1/en
Timestamp: 2019-01-21 09:41:26
Document Index: 352945116

Matched Legal Cases: ['Application No. 61', 'Application No. 61', 'Application No. 61', 'Application No. 61', 'Application No. 61', 'Application No. 61', 'Application No. 61', 'Application No. 61', 'Application No. 61', 'Application No. 12']

US20100295454A1 - Apparatus and method of energy efficient illumination - Google Patents
US20100295454A1
US20100295454A1 US12784091 US78409110A US2010295454A1 US 20100295454 A1 US20100295454 A1 US 20100295454A1 US 12784091 US12784091 US 12784091 US 78409110 A US78409110 A US 78409110A US 2010295454 A1 US2010295454 A1 US 2010295454A1
US8541950B2 (en )
At 804, the retrofit or integral control subsystem determines a time following the turning ON of the light source when turn OFF will occur. Since turn
OFF is based on sensing a level of light being at or above a turn OFF threshold, the retrofit or integral control subsystem cannot know ahead of time precisely when that event will occur. However, the adjustment to increase light level must occur sometime before this event. Thus, the retrofit or integral control subsystem predicts the occurrence of this event based on a sampling of recent daily cycles.
The various embodiments described above can be combined to provide further embodiments. To the extent that they are not inconsistent with the specific teachings and definitions herein, all of the U.S. patents, U.S. patent application publications, U.S. patent applications, foreign patents, foreign patent applications and non-patent publications referred to in this specification and/or listed in the Application Data Sheet, including but not limited to U.S. Patent Publication No. US 2009/0278474, published Nov. 12, 2009; U.S. Patent Publication No. US 2009/0284155, published Nov. 19, 2009; U.S. Patent Publication No. US 2010/0090577, published Apr. 15, 2010; U.S. Provisional Patent Application No. 61/051,619 filed May 8, 2008; U.S. Provisional Patent Application No. 61/052,924 filed May 13, 2008; U.S. Provisional Patent Application No. 61/088,651 filed Aug. 13, 2008; U.S. Provisional Patent Application No. 61/115,438 filed Nov. 17, 2008; U.S. Provisional Patent Application No. 61/154,619 filed Feb. 23, 2009; U.S. Provisional Patent Application No. 61/174,913 filed May 1, 2009; U.S. Provisional Patent Application No. 61/180,017 filed May 20, 2009; U.S. Provisional Patent Application No. 61/229,435 filed Jul. 29, 2009; U.S. Non-Provisional patent application Ser. No. 12/619,535, filed Nov. 16, 2009; U.S. Provisional Patent Application No. 61/295,519 filed Jan. 15, 2010; U.S. Non-Provisional Patent Application No. 12/769,956, filed Apr. 29, 2010; U.S. Provisional Patent Application Ser. No. 61/333,983, filed May 12, 2010; U.S. Provisional Patent Application Ser. No. 61/346,263, filed May 19, 2010; and U.S. Nonprovisional patent application Ser. No. ______, filed May 20, 2010 entitled “APPARATUS AND METHOD OF ENERGY EFFICIENT ILLUMINATION” and identified by Attorney Docket No. 310150.412; are incorporated herein by reference, in their entirety. Aspects of the embodiments can be modified, if necessary, to employ systems, circuits and concepts of the various patents, applications and publications to provide yet further embodiments.
1. A method of operating an outdoor illumination system, the method comprising:
processing by at least one control subsystem information indicative of a level of illumination sensed by at least one sensor over a plurality of daily cycles; the processing by the at least one control subsystem including:
causing at least one illumination source to be turned OFF during the current one of the daily cycles;
determining a period of time between when the at least one illuminate source is turned ON and turned OFF during at least one of the daily cycles;
12. The method of claim 11 wherein determining when to cause the level of illumination produced by the at least one illumination source to be increased based at least in part on the sensed level of illumination sensed during at least one previous one of the daily cycles includes determining an amount of delay after occurrence of the middle of the determination period on the calibrated clock based on a total duration of the determined period.
a control subsystem that includes at least one control circuit, the control subsystem communicatively coupled to receive signals from at least one sensor, the received signals indicative of a level of illumination over a plurality of daily cycles and that:
23. The system of claim 15 wherein the control subsystem further determines a period of time between when the at least one illuminate source is turned ON and turned OFF during at least one of the daily cycles; determines a middle of the determined period; calibrates a clock to the determined middle of the determined period;
and determines when to cause the level of illumination produced by the at least one illumination source to be increased further based at least in part on the calibrated clock.
US20100295454A1 true true US20100295454A1 (en) 2010-11-25
US8541950B2 US8541950B2 (en) 2013-09-24
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US20070153524A1 (en) 2007-07-05 Lighting Control with Season Detect