Results 21 to 30 of about 9,329,756 (290)
Performance of visible light communications with dimming controls [PDF]
2014 IEEE Wireless Communications and Networking Conference (WCNC), 2014 Visible light communications (VLC) have gained popularity as an alternative to RF. Understanding the underlying communications is key to the design of MAC protocols for arbitrating access across lights in multiple rooms. We consider the interference across two rooms from VLC emitters.
Zi Feng +5 more
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Dimming Control Systems Based on Low-PAPR SCFDM for Visible Light Communications
IEEE Photonics Journal, 2018 In this paper, the efficient dimming control systems based on single-carrier frequency-division multiplexing (SCFDM) are proposed for visible light communications (VLC).
Tiantian Zhang +5 more
doaj +1 more source
Camera system with small fast dimming mechanism
Nihon Kikai Gakkai ronbunshu, 2014 This paper describes a camera system with a small fast dimming mechanism and a camera. A developed camera system has two features. The small dimming mechanism is fast and sequential dimming using two polarizing filters.
Mitsuhiro MATSUMOTO
doaj +1 more source
A Novel Coding Based Dimming Scheme with Constant Transmission Efficiency in VLC Systems
Applied Sciences, 2019 Visible light communication (VLC) has attracted tremendous attention due to two functions: communication and illumination. Both reliable data transmission and lighting quality need to be considered when the transmitted signal is designed.
Yu Zuo, Jian Zhang
doaj +1 more source
Bumblebees Perform Well-Controlled Landings in Dim Light [PDF]
Frontiers in Behavioral Neuroscience, 2016 To make a smooth touchdown when landing, an insect must be able to reliably control its approach speed as well as its body and leg position-behaviors that are thought to be regulated primarily by visual information. Bumblebees forage and land under a broad range of light intensities and while their behavior during the final moments of landing has been ...
Reber, Therese +3 more
openaire +3 more sources
HYBRID DIMMING CONTROL FOR BOTH PWM AND AUX [PDF]
, 2020 Both PWM and AUX dimming control techniques are implemented in a single firmware set for an eDP (embedded display port) LCD panel to allow the panel to work with graphics vendors using either dimming ...
INC, HP
core +1 more source
Distributed dimming control for LED lighting
Optics Express, 2013 This paper presents a distributed energy-saving lighting strategy for the arrangements of a lighting network consisting of a group of light-emitting diode (LED) lamps and users. LED lamps have a dimming support feature to meet the illuminance requirements imposed by individual users. Both groups interact with each other via visible light communication (
Lee, Sang Hyun, Kwon, Jae Kyun
openaire +3 more sources
Advanced Dimming Control Algorithm for Sustainable Buildings by Daylight Responsive Dimming System [PDF]
Sustainability, 2018 This study aims to evaluate the accuracy and energy savings of a daylight responsive dimming system (DRDS) when considering the influence of indirect illuminance. In the case of the existing DRDS, during the calibration process of each luminaire, the other luminaires were turned off to detect the illuminance of both the luminaire and the incoming ...
Kim, In-Tae +3 more
openaire +1 more source
IEEE Access, 2018 We design a hybrid visible light (VL) and infrared (IR) data transmission scheme for indoor visible light communication (VLC) systems with multi-pulse position modulation (MPPM) dimming control.
Xiaodi You, Jian Chen, Changyuan Yu
doaj +1 more source
Power Management of LED Street Lighting System Based on FPGA [PDF]
Engineering and Technology Journal, 2014 Light Emitting Diode (LED) lamp is new lighting technology used over the world, its high efficiency, low power consumption, dimming capability, long lifetime, environmental friendly and much more advantages make it preferred source in new outdoor and ...
Hanan A.R Akar +2 more
doaj +1 more source