首页|Researchers Submit Patent Application, 'Proximity Sensor', for Approval (USPTO 20240053472)
Researchers Submit Patent Application, 'Proximity Sensor', for Approval (USPTO 20240053472)
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From Washington, D.C., NewsRx journalists report that a patent application by the inventors ELE, Vijay Yadgiri (Hyderabad, IN); KODE, Radhika (Hyderabad, IN); KURUGANTI, Dinesh (Guntur, IN); VERNEKAR, Sandeep (Hyderabad, IN), filed on December 14, 2021, was made available online on February 15, 2024. No assignee for this patent application has been made. News editors obtained the following quote from the background information supplied by the inventors: "A proximity sensing device is used to detect, within an environment of the proximity sensing device, if a target exists and/or is used to measure a distance between the target and the proximity sensing device. The proximity sensing device comprises an infrared (IR) LED transmitter and a photodiode configured to detect light reflected from the target. The amount of current produced by the photodiode is proportional to the distance between the target and the proximity sensing device. The IR LED transmitter is operable to produce a particular number of light pulses, while an integrator integrates each resultant pulse current produced by the photodiode, to produce a digital output current. "Ideally, when there is no target present within an environment of the proximity sensing device to reflect light from the target, the digital current output should be zero. However, if the proximity sensing device is underneath a surface, such as underneath a mobile phone display glass, a portion of the light emitted by the IR LED transmitter may be reflected by the surface, which may result in an unwanted non-zero digital current output. The unwanted non-zero digital current output is referred to as crosstalk.
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