Solomon Systech Limited

Luxotech Limited

Wai Pak Choi

Wing Chi Stephen Chan

Wai Hon Ng

Sing Ng

Stephen Wai-Yan Lai

Xiacong Liu

Siu Hong Lui

Hon Sheung Liu

Wai Kin Cheng

Kwok Wah Chu

Yao Lu

An indoor power line transmission control system, includes: a transforming dimming controller (), which is used to load, onto an electrical signal, a received dimming signal sent by a mobile terminal or input by a user in a touch-control manner, and send the electrical signal loaded with the dimming signal to a dimming driver (); and the dimming driver, which is electrically connected with the transforming dimming controller and a dimming luminaire (), and used to read the electrical signal loaded with the dimming signal, and adjust a gray scale of the dimming luminaire according to the read electrical signal. By replacing a normal switch with the transforming dimming controller and by using the dimming driver and transmitting the dimming signal to the dimming luminaire by means of a power line, flexibility of having no wiring, simple extension and smart dimming are realized and energy can be saved.

Indoor power line transmission control system

A controller for detection of touches by a single finger or multiple fingers on a touch panel, the touch panel including a first group of electrodes arranged in a first direction and a second group of electrodes arranged in a second direction, thereby forming a plurality of crossover points. The controller includes: a plurality of signal drivers coupled to the first group of electrodes and configured to excite the first group of electrodes sequentially using a spread spectrum signal; a plurality of signal sensors coupled to the second group of electrodes and configured to detect peaks and troughs of capacitive coupled signals at the second group of electrodes, the detecting being performed simultaneously for the crossover points along a current one of the first group of electrodes that is being excited; and a signal processing device configured to detect the touches on the touch panel and to determine touch positions and touch movements, based on the detected peaks and troughs of the capacitive coupled signals.

Method and apparatus for operating a touch panel

Methods and apparatuses of contrast enhancement on an image are disclosed. The method performs local shading of fine contrast variations in an image, with particular advantage in tone mapping applications. The amounts of shading are determined by the preferred degree of increased image contrast, including compensation for subsequent tone mapping, and the difference between a profile signaland the image signalconditional on the signal profile level being higher than the original image signal level, wherein avoiding boosting of brightness level to obtain contrast enhancement. The profile signalis calculated by the weighted sum of the image signal and the absolute signal variation which is the absolute value of the variation between the brightness of two neighbor pixels. This amount of shading is reduced to zero when the profile signalis lower than the original image signalfor avoiding the overshooting problem at sharp edges in an image. Uniform RGB scaling is applied to preserve original color tones.

Method and apparatus of local contrast enhancement

Growing community of inventors

Hong Kong, China

Wai Pak Choi