MALVERN, PA--(Marketwired - Apr 29, 2013) - Vishay Intertechnology, Inc. (
In devices such as smartphones, ambient light sensors optimize the visibility of the LCD display by allowing the backlight to adjust its brightness automatically based on surrounding light levels. The proximity sensor is used to turn off the backlight of the display and disable the touch functionality when the phone is brought next to the user's ear, preventing his or her cheek from ending a call accidentally. Both types of sensors are designed to reduce power consumption and extend battery life in mobile electronics. For these devices, the Vishay Semiconductors VCNL4020 and VCNL3020 are fully integrated solutions, containing an infrared emitter and photo detector for proximity sensing, an ambient light sensor (VCNL4020), and signal processing, all in a single surface-mount package.
The VCNLx020 Android software package includes the documentation, source code, and patch files required to allow an Android-based platform to communicate with the VCNL4020 or VCNL3020. This communication follows the standard Android sensors framework. The supplied Android VCNL4020 driver consists of two parts: the kernel module responsible for the data control and acquisition from the VCNL4020 and the subsequent HAL (Hardware Abstraction Layer) module to link the kernel to the main Android framework, allowing the information supplied by the sensor to be used by Android applications. To demonstrate this, a demo Android app is included (VCNL40x0-DemoApp.apk), along with its associated source code, which can serve as a base for building user-specific Android applications.
The VCNLx020 Android software package can be downloaded for free, after registration on Vishay's website, by clicking on the Android robot at http://www.vishay.com/optical-sensors/ .
Vishay Intertechnology, Inc. , a Fortune 1,000 Company listed on the NYSE (VSH), is one of the world's largest manufacturers of discrete semiconductors (diodes, MOSFETs, and infrared optoelectronics) and passive electronic components (resistors, inductors, and capacitors). These components are used in virtually all types of electronic devices and equipment, in the industrial, computing, automotive, consumer, telecommunications, military, aerospace, power supplies, and medical markets. Vishay's product innovations, successful acquisition strategy, and "one-stop shop" service have made it a global industry leader. Vishay can be found on the Internet at www.vishay.com .
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Links to datasheets: http://www.vishay.com/doc?83476 (VCNL4020) http://www.vishay.com/doc?84150 (VCNL3020)
Link to product photo: http://www.flickr.com/photos/vishay/8664133178
