May 27 2010
LG Electronics has chosen Cypress Semiconductor’s capacitive sensing solution called the CapSense to integrate a range of control functions in its light emitting diode (LED) HD digital TV sets.
The CapSense, a PSoC-based solution, offers advanced noise immunity level and can be used to implement a number of functions in a solitary chip. One CapSense chip can manage about 20 LEDs and 8 touch buttons. The CapSense can control a buzzer on the television and completely organizes the LED effects when the buttons are turned on.
The PSoC components utilize a system-on-chip architecture for embedded control design applications. They can integrate both digital and analog circuits. The PSoC components also reduce cost, improve system quality, and save electricity consumption, board space, and design time.
The CapSense allowed LG to reorganize the capacitive sensing hardware to address various noise problems in the system, and enabled them to pass through rigorous electromagnetic susceptibility (EMS) standards easily. The CapSense surpasses other capacitive sensing solution in terms of noise immunity levels.
The LG television sets ranging from 42 to 60 inch sizes are equipped with the CapSense solution. The TV models include the LE750, LE650, LE550, LE540 and LE530. These series of televisions offer next-generation online connectivity with broadband television. The mechanical buttons in the TVs have been replaced with the CapSense solution and the sets have been optimized to lend a visual appeal. Wireless high-definition (HD) televisions offer a range of advanced features and eliminate other wiring requirements.
The CapSense is a touch-sensing solution and has been used to substitute numerous mechanical buttons in automotive products, cellular handsets, white goods, consumer electronics and laptops.
The new solution, with its advanced water tolerant capabilities, has been leveraged to integrate and improve design and reliability. The CapSense is also used in proximity sensing applications where direct touch control is not needed. This advanced proximity sensing, which can detect at a range of up to 25 cm, activates the interface when required, thus providing increased power savings.
The CapSense proximity sensing also improves designs by exposing interfaces only when required. The CapSense is based on the PSoC Designer Embedded-System Design Tool and PSoC programmable system-on-chip architecture. Users can complete their designs within a short period of time by utilizing real-time sensor monitoring and tuning and pre-configured user modules.