Intel Corporation

Spencer Markowitz

Javier Perez-Ramirez

Zoran Zivkovic

Richard D Roberts

Rufeng Meng

Ankitkumar Pravinbhai Navik

Nagarajan Muralidharan

This disclosure describes systems, methods, and devices related to frequency offset tracking in optical signals. A device may identify modulated light received from a light source, wherein the modulated light is received at a frame rate, and wherein the modulated light is associated with pixel clusters. The device may determine light samples based on the pixel clusters, the light samples including a first light sample and a second light sample. The device may determine a vector norm between the first light sample and the second light sample using an oversampling factor. The device may determine that the vector norm is below a threshold. The device may determine a start frame delimiter (SFD) based on the vector norm. The device may demodulate the symbol based on the oversampling factor.

Enhanced frequency offset tracking in optical signals

An example apparatus for depth sensing includes an image data receiver to receive image data from a communication camera and an augmented reality (AR) camera. The apparatus also includes a modulated light detector to detect one or more modulated lights in the image data from the communication camera. The apparatus further includes a representation generator to generate a visual representation of a local image region for each of the detected modulated lights. The apparatus includes a region matcher to match the visual representation for each of the detected modulated lights with a region in the image data received from the AR camera. The apparatus also further includes a distance estimator to estimate a distance between a dual camera receiver and the one or more modulated lights based on a disparity between a position of the visual representation and a position of the matched region in the image data.

Augmented reality depth sensing using dual camera receiver

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Santa Clara, CA, United States of America

Spencer Markowitz