Xicato, Inc.

Cypress Semiconductor Corporation

Other

Google Inc.

Barry Mark Loveridge

Gerard Harbers

Martin Emil Mueller

Jeffrey P Hushley

David J Kunst

Peter K Tseng

Roger J Bettman

Pieter Johannes Kerstens

John S Yriberri

Anita X Meng

Warren A Kartadinata

A Light Emitting Diode (LED) based illumination device authenticates a mobile electronics device on a lighting communications network. The mobile electronic device may request a communications link on the lighting communications network and detect modulated illumination light emitted from the LED based illumination device. The modulated light may include an optical code. The mobile electronic device may determine the optical code from the modulated illumination light and communicate an indication of the optical code to the LED based illumination device. The LED based illumination device may determine if the indication of the optical code is correct and provide, in response, a communication link to the mobile electronics device on the lighting communications network.

Lighting based authentication of a mobile electronic device

An LED based illumination device includes a receiver and a transmitter for communications adhering to a lighting control communications protocol and a high speed communications protocol. The LED based illumination device may be part of a lighting control network, wherein the data transmission rate of the high speed communications protocol is more than twice that of the lighting control communications protocol. The lighting control network may be coupled to a digital communications gateway, including a digital communications interface configured to be coupled to a network operating in accordance with an internet protocol and a lighting control network interface coupled to the lighting control network. A processor determines a summary status value of the LED based illumination device based on information stored in memory of the digital communications gateway. The digital communications gateway may periodically transmit the time of day to the LED based illumination device over the lighting control network.

LED-based lighting control network communication

A light control and data interface module (LCDIM) is used to control an LED based illumination device. The LCDIM includes a transceiver that receives communication signals from one or more sensor modules. The signals may include an indication of an identity of the one or more sensor modules and elapsed time since a triggering event was detected. One or more processors are configured to receive the communication signal and to determine a delay time to trigger a lighting control response. The one or more processors are further configured to cause the transmission of a command signal to a power converter coupled to the LCDIM to implement the lighting control response.

Synchronized light control over a wireless network

Light Emitting Diode (LED) based illumination devices in a lighting communications network may be commissioned into a group with a mobile electronics device, such as a mobile phone, tablet computer, etc. The identities of a plurality of LED illumination devices are determined and a request is communicated to the identified LED based illumination devices to modulate emitted light for a period of time. The modulated light is detected by the mobile electronics device, which may then determine a group of the LED based illumination devices. For example, the detected intensity of the modulated light may be used to determine the group. In another example, the physical locations of the LED based illumination devices are determined by detecting a sequence of images (e.g., video) of the modulated light, and the group may be determined based on the locations of the LED based illumination devices.

Commissioning of devices on a lighting communications network

An LED based illumination device is dimmed by controlling an average current supplied to the LED based illumination device. The currently supplied to the LED may be supplied by an LED driver that is in communication with a dimming control engine. The dimming control engine may receive an indication of a desired average current level. The dimming control engine controls the LED driver to periodically switch a current supplied to an LED of the LED based illumination device from a high state to a low state over a switching period, wherein both a duration of the switching period is adjusted and a ratio of a time in the high state to a time in the low state is adjusted as the average current supplied to the LED based illumination device transitions from a first average current level to the desired average current level.

Deep dimming of an LED-based illumination device

A Light Emitting Diode (LED) based illumination device may include a Light Control and Data Interface Module (LCDIM). The LCDIM may include an LED driver that supplies electrical power to the LED based light engine of the LED based illumination module. The LCDIM may include a radio frequency (RF) transmitter that communicates a signal indicative of an operational status of the LED based light engine to another device on a wireless communications network using a Bluetooth Low Energy (BLE) advertising packet. Additionally, in a lighting control system, a light control device may include a RF transmitter to communicate a signal indicative of a lighting control command to the LCDIM using a BLE advertising packet.

Lighting communication advertising packets

A reflector housing is detachably coupled to an LED based illumination device and includes a flange having a surface facing the environment illuminated by the LED based illumination device. The reflector housing further includes a reflector having an input port that receives light emitted from the LED based illumination device and an output port through which light passes toward the environment. At least one sensor, such as a sensor for occupancy, an ambient light, a temperature, ultrasound, vibration, pressure, or a camera, microphone, visual indicator, or photodetector, is coupled to the flange such that at least a portion of the sensor faces the environment illuminated by the LED based illumination device. A reflector interface module configured to receive at least one signal from the sensor is coupled to the reflector housing. Additionally, a communications interface subsystem is configured to transmit and receive communications signals to and from the reflector housing.

LED-based illumination device reflector having sense and communication capability

An LED based illumination device includes a plurality of LEDs that emit light through an output port of a housing. The LED based illumination device includes a heat sink that is in thermal contact with the plurality of LEDs. A peripheral electrical circuit board is configured to be contained within the housing, e.g., surrounding at least a portion of the heat sink. The peripheral electrical circuit board may include a radio frequency (RF) transceiver configured to communicate data between the LED based illumination device and another electronic device. A primary electrical circuit board may be electrically coupled to the peripheral electrical circuit board and electrically coupled to the plurality of LEDs.

LED-based illumination systems having sense and communication capability

An LED based lighting system includes a controlled current power supply (CCPS) coupled to provide electrical power to an LED based light engine having a plurality of light emitting diodes electrically coupled in series. The LED based lighting system further includes a controlled voltage power supply (CVPS) electrically coupled to the CCPS. A difference between an output voltage on the output node of the CVPS and an input voltage at the input node of the CCPS is used to adjust the output voltage at the output node of the CVPS.

Power management of an LED-based illumination device

An LED based illumination device transmits information by receiving an amount of digital data and modulating a color of light emitted from the LED based illumination device based on the digital data. The luminous flux of the emitted light remains approximately constant while the color of light varies. A receiver may receive the emitted light and demodulate a signal indicative of the color of emitted light to determine the digital data. The color of the light may be modulated by varying current provided to different LEDs, where the different LEDs cause different color of light to be emitted from the LED based illumination device.

Color modulated LED-based illumination

Embodiments described herein provide a LED lighting system and method. A transformer has a primary winding and a secondary winding. A plurality of LED strings are coupled to the secondary winding of the transformer. At least one switch is coupled to at least one of the plurality of LED strings. A controller is coupled to the at least one switch and configured to control the operation of the at least one switch such that current flows through the plurality of LED strings in an alternating manner.

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San Jose, CA, United States of America

Barry Mark Loveridge