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New ams Light Sensor with 50/60Hz Flicker Detect Helps Mobile Phones Take Great Photos Every Time

ams (SIX: AMS), a leading worldwide supplier of high performance sensor solutions, today introduces a new color (RGB), proximity and flicker detection sensor, the TCS3707, which enables a mobile phone camera to take clean, unblemished photographs in artificial lighting scenes.

When equipped with a TCS3707, a mobile phones camera may be used in any conditions, including under artificial light sources such as fluorescent lights or street lamps, without suffering from banding or other image artefacts generated by the invisible flickering of AC powered lighting.

A mobile phones camera has huge value to the consumer “ for most, it has become their primary photography device, replacing the stand-alone digital still camera. By transforming the cameras performance under artificial lights, the ams TCS3707 gives phone OEMs an exciting new way to differentiate their product without any fundamental re-design of the camera systems architecture, says Dave Moon, Senior Product Marketing Manager in the Integrated Optical Sensors business line at ams.

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The devices flicker detection engine can detect the flickering of any artificial light source operating from 50Hz or 60Hz alternating current cycles. Flicker produces banding and other artefacts in pictures taken by an image sensor with a rolling shutter. The effect is produced when the flickering light turns on or off while the shutter is in operation.

The TCS3707s flicker detection capability allows the camera controller to synchronize the shutter with the ˜On part of the AC cycle. The sensor can also supply flicker measurements to the mobile phones applications processor to support flicker cancellation firmware at frequencies other than 50/60Hz by using the internal FIFO on the device.

The TCS3707 proximity sensor embeds IR cross-talk rejection and, when paired with an IR emitter, produces reliable proximity detection.

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