# US 10,455,672 B2 · Time-based lighting control

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- Number: US 10,455,672 B2
- Document ID: US10455672B2
- Status: Granted
- Kind: B2
- Application number: 16/109,091
- Filed: 2018-08-22
- Published: 2019-02-28
- Granted: 2019-10-22
- Earliest claimed: 2017-08-23
- Assignees: Eaton Intelligent Power Limited
- Applicants: Eaton Intelligent Power Limited
- Inventors: Nam Chin Cho; Parth Joshi; David George Watt
- Web page: https://patentgrep.com/patent/US10455672B2

## CPC

- H05B 45/46: having LEDs disposed in parallel lines
- H05B 45/10: Controlling the intensity of the light
- H05B 45/20: Controlling the colour of the light
- H05B 45/37: Converter circuits
- H05B 47/16: by timing means
- F21Y 2115/10: Light-emitting diodes [LED]
- H05B 45/12: using optical feedback
- Y02B 20/40: Control techniques providing energy savings, e.g. smart controller or presence detection
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

## Abstract

A lighting fixture includes a light emitting diode (LED) light source, a clock module, and a controller configured to control one or more characteristics of a light emitted by the LED light source based on time information received from the clock module. The controller is further configured to determine a current time of a day from the time information received from the clock module.

## Claims

### Claim 1

A lighting fixture, comprising:
a light emitting diode (LED) light source;
a clock module; and
a controller configured to control one or more characteristics of a light emitted by the LED light source based on time information received from the clock module, wherein the controller is configured to determine a current time of a day from the time information, wherein the controller is configured to interpret a sequence of toggles of a power provided to the lighting fixture as indicating a reference time of the day at a time of a detection of the sequence of toggles, and wherein the clock module is configured to keep track of the current time of the day starting from the reference time of the day.

### Claim 2 (depends on 1)

The lighting fixture of claim 1, wherein the controller is configured to control the one or more characteristics of the light further based on a lighting control profile that indicates lighting characteristics information with respect to different times of the day.

### Claim 3 (depends on 2)

The lighting fixture of claim 2, wherein the one or more characteristics of the light emitted by the LED light source includes a color temperature.

### Claim 4 (depends on 2)

The lighting fixture of claim 2, wherein the one or more characteristics of the light emitted by the LED light source includes a dim level.

### Claim 5 (depends on 1)

The lighting fixture of claim 1, wherein the clock module includes an atomic clock.

### Claim 6 (depends on 1)

The lighting fixture of claim 1, wherein the clock module includes a real time clock circuit.

### Claim 7 (depends on 1)

The lighting fixture of claim 1, wherein the clock module includes a soft clock and wherein the controller and the clock module keep track of the current time of the day based on a run clock provided to the controller.

### Claim 8 (depends on 1)

The lighting fixture of claim 1, further comprising a battery that provides power to the clock module.

### Claim 9 (depends on 1)

The lighting fixture of claim 1, wherein the controller is configured to interpret a second sequence of toggles of the power provided to the lighting fixture as indicating a second reference time of the day at a time of a detection of the second sequence of toggles and wherein the second reference time of the day is different from the reference time of the day.

### Claim 10 (depends on 1)

The lighting fixture of claim 1, wherein the controller is configured to control the one or more characteristics of the light based on a signal received wirelessly by the lighting fixture.

### Claim 11

A lighting fixture, comprising:
a light emitting diode (LED) light source;
a crystal; and
a controller configured to keep track of a current time of a day based on a signal from the crystal and to control one or more characteristics of a light emitted by the LED light source based on the current time of the day, wherein the controller is configured to interpret a sequence of toggles of a power provided to the lighting fixture as indicating a reference time of the day at a time of a detection of the sequence of toggles and wherein the controller is configured to keep track of the current time of the day starting from the reference time of the day.

### Claim 12 (depends on 11)

The lighting fixture of claim 11, wherein the controller is configured to control the one or more characteristics of the light further based on a lighting control profile that indicates lighting characteristics information with respect to different times of the day.

### Claim 13 (depends on 12)

The lighting fixture of claim 12, wherein the one or more characteristics of the light emitted by the LED light source includes a color temperature.

### Claim 14 (depends on 12)

The lighting fixture of claim 12, wherein the one or more characteristics of the light emitted by the LED light source includes a dim level.

### Claim 15 (depends on 11)

The lighting fixture of claim 11, further comprising a battery that provides power to at least a portion of the controller.

### Claim 16 (depends on 11)

The lighting fixture of claim 11, wherein the controller is configured to interpret a second sequence of toggles of the power provided to the lighting fixture as indicating a second reference time of the day at a time of a detection of the second sequence of toggles and to keep track of the current time of the day based on the second reference time of the day and wherein the second reference time of the day is different from the reference time of the day.

### Claim 17

A lighting fixture, comprising:
a light emitting diode (LED) light source configured to emit a light;
a clock module; and
an LED driver comprising a controller, wherein the LED driver is configured to provide power to the LED light source, wherein the controller is configured to control an amount of the power provided to the LED light source, wherein the controller is configured to control one or more characteristics of the light based on time information received from the clock module wherein the controller is configured to interpret a sequence of toggles of a source power provided to the lighting fixture as indicating a reference time of a day at a time of a detection of the sequence of toggles, and wherein the clock module is configured to keep track of a current time of the day starting from the reference time of the day.

### Claim 18 (depends on 17)

The lighting fixture of claim 17, wherein the controller is configured to control the one or more characteristics of the light further based on a lighting control profile that indicates lighting characteristics information with respect to different times of a day.

### Claim 19 (depends on 18)

The lighting fixture of claim 18, wherein the one or more characteristics of the light includes a color temperature.

### Claim 20 (depends on 17)

The lighting fixture of claim 17, wherein the controller is further configured to interpret a second sequence of toggles of the source power provided to the LED driver between on and off as indicating a second reference time of the day at a time of a detection of the second sequence of toggles and wherein the second reference time of the day is different from the reference time of the day.