TAOS has introduced the TCS3x71 and the TCS3x72 low-power digital colour RGB and proximity sensors with an on-chip IR blocking filter for ambient light sensing. They can be used in tablets, HDTVs, notebooks, desktop PCs and monitors, printers, industrial process quality controlling, portable medical diagnostic systems, household appliances, toys and games. The sensors perform proximity detection within a range of lighting conditions, and automatic backlight brightness control based on lighting conditions for optimum viewing and energy conservation. With the advanced semiconductor process and the company's optoelectronics, the filter is said to eliminate the need for external IR filtering. For colour sensing in closed environments with no IR light sources, the sensors enable closed-loop colour temperature feedback control in solid-state lighting and LED RGB backlit displays. The sensors have applications in OLED-based smartphones for determining the colour temperature of the ambient light to provide good picture quality and touchscreen control. In displays, the sensors enable ambient light sensing for automatic backlight control, proximity detection as a virtual button or viewer detection, and external colour temperature sensing to adjust the gamma table used to display content for good picture quality, claims the company.
