Industrial Technology Research Institute

Lextar Electronics Corporation

Advanced Optoelectronic Technology, Inc.

Yuan-Ching Chen

Chun-Kuang Chen

Hung-Lieh Hu

Po-Shen Chen

Chun-Hsing Lee

Feng-Ling Lin

Hui-Ying Chen

Chia-Fen Hsieh

Ya-Hui Chiang

Hsueh-Chih Chang

Sheng-Ho Huang

Yu-Ming Huang

Jen-Hao Yeh

Hsiang-Chi Chung

A light-emitting device and a driving device thereof. The driving device is coupled to a load and includes a first current source and a second current source. The first current source provides a base current to drive the load. The second current source generates an adjustment current according to an adjustment voltage and enables the adjustment current to adjust magnitude of a current flowing through the load.

Light-emitting device and driving device thereof

An illumination system including light source devices, a light receiver, a calculation module and a control module is provided. The light source devices emit light beams having different frequencies respectively. The light receiver receives at least one of the light beams emitted from the light source devices. The calculation module is coupled to the light receiver and obtains at least one optical parameter of the at least one of the light beams according to the at least one of the light beams received by the light receiver. Each of the at least one optical parameter includes a light intensity, a color temperature, a color rendering index or an illumination ratio. The control module is coupled to the calculation module and the light source devices. The control module controls the at least one optical parameter of the at least one of the light beams. A control method thereof is also provided.

Illumination system and control method thereof

A fault detection circuit includes a micro processing unit configured to output a first pulse width modulation (PWM) signal, a driver electrically coupled to the micro processing unit, and a comparator configured to electrically connect the micro processing unit and the driver. The first PWM signal is configured to drive the driver to output a second PWM signal configured to drive the electrical device. The comparator is configured to compare the second PWM signal with a reference level to output a third PWM signal to the micro processing unit. The third PWM signal contains a number of high level signals and low level signals. The micro processing unit is configured to detect the number of the high level signals and the number of the low level signals during at least one time period to determine a status of an electrical device.

Fault detection circuit and fault detection method

A fault detection apparatus coupling with a lamp module includes a current detector and a controlling module. The controlling module is coupled with the current detector. A fault detection method of a fault detection apparatus is also provided in the present disclose. The method includes providing a current detector to detect a current variation of one lamp of a lamp module in a period, and provide a controlling module to compare the current variation with a reference value stored in the controlling module to determine a state of the lamp module.

Fault detection apparatus and fault detection method thereof

A temperature and illumination adjusting system, including: a temperature and illumination adjusting device, including a CPU, receiving a temperature value and an illumination value, and generating a first PWM value and a second PWM value according to a first formula and a second formula; and a communication unit, outputting the first PWM value and the second PWM value; and a lamp device, including a lamp communication unit, receiving the first PWM value and the second PWM value; a first light module; a second light module; a first PWM driving unit, driving the first light module with the first PWM value; a second PWM driving unit, driving the second light module with the second PWM value, wherein the outputs of the first light module and the second light module have different color temperature.

Color temperature and illumination adjusting system, and method thereof

A light control system includes a wired control device, a wireless control device, a communication module, and light devices. The wired control device includes a first user interface and a first wired communication protocol interface. The wireless control device includes a second user interface and a first wireless communication protocol interface. The communication module includes a second wired communication protocol interface and a second wireless communication protocol interface. Each of the light devices includes a third wired communication protocol interface, and each of the light devices performs data exchange with the third wired communication protocol interface of another one of the light devices by a network cable connected to the third wired communication protocol interface. The first wired communication protocol interface and the first wireless communication protocol interface perform data exchange respectively with the second wired communication protocol interface and the second wireless communication protocol interface.

Integrated wireless and wired light control system

A wireless control system and a wireless network expansion method applied thereto are provided. The wireless control system comprises a mobile platform and a plurality of wireless devices capable of switching between a first role and a second role. The wireless network expansion method comprises following steps. A mobile platform is turned on. The mobile platforms scans the wireless devices and links to any wireless device serving the first role and then sends a control command to corresponding wireless device, which accordingly broadcasts the control command. The control command is received by at least one wireless device serving the second role. The wireless devices cyclically switch between the first role and the second role to continuously broadcast the control command to other wireless devices serving the second role, so that all of the wireless devices can finally receive the control command from the mobile platform.

Wireless control system and wireless network expansion method applied thereto

The control method comprises the following steps. Firstly, whether a touch event occurs in a control device is determined. Then, responding to a color temperature set and a brightness set from the control device, a first PWM and a second PWM is generated. Then, whether the lamp connects with to the control device is determined. Then, the first PWM and the second PWM is packaged in a color control package if the lamp connects with to the control device. Then, the color control package is transmitted to the lamp in wireless.

Control method of lamp

A lighting system for dim ambience has at least one light source module, implemented in an ambience. The light source module has multiple light emitting units. Each unit is respectively controlled to produce a luminance. A luminance detecting unit detects a photonic luminance and a luminance ratio. A processing and operation module calculates a mesopic luminance according to the photonic luminance and the luminance ratio. When the photonic luminance is less than a dim-light setting value, a power control information is obtained by a fitness operation with a given condition set. The power control information is corresponding to an optimized mesopic luminance after fitness. A control unit receives the power control information to modulate the luminance of the light emitting units.

Lighting system for dim ambience

An optical interactive panel includes a cladding layer, a first waveguide array, a second waveguide array, a first set of image sensor, and a second set of image sensor. The cladding layer has a first index of refraction. The first waveguide array has first waveguide channels formed on the cladding layer, wherein the first waveguide channels have a second index of refraction less than the first index of refraction, and extending at a first direction. The second waveguide array has second waveguide channels, formed on the cladding layer and extending at a second direction. The first set of image sensor detects a first set of light signals from the first waveguide channels to determine a first-direction location. The second set of image sensor detects a second set of light signals from the second waveguide channels to determine a second-direction location.

Growing community of inventors

Kaohsiung, Taiwan

Yuan-Ching Chen