Abstract: A plurality of positional sensing devices are situated at regular intervals within an environment and collect data for tracking objects moving within the environment. Phase shift of modulated Doppler pulses reflected from the sensing devices to objects are measured and converted into positional data indicating positions of detected objects within the environment. Associated timestamp data is also collected by the positional sensing devices. The positional data and associated timestamp data is aggregated from the plurality of positional sensors, and the aggregated positional data and is clustered to determine point clouds which are associated with the detected objects. The clusters are tracked by tracklets that track the position of each cluster over time. Trajectories for each detected object are determined by connecting tracklets together that are associated with the same detected object.

Abstract: A plurality of positional sensing devices are situated at regular intervals within an environment and collect data for tracking objects moving within the environment. Phase shift of modulated Doppler pulses reflected from the sensing devices to objects are measured and converted into positional data indicating positions of detected objects within the environment. Associated timestamp data is also collected by the positional sensing devices. The positional data and associated timestamp data is aggregated from the plurality of positional sensors, and the aggregated positional data and is clustered to determine point clouds which are associated with the detected objects. The clusters are tracked by tracklets that track the position of each cluster over time. Trajectories for each detected object are determined by connecting tracklets together that are associated with the same detected object.

Abstract: A watchband connection mechanism includes a watchband with a watchband housing and a cam rotatable between a first position where the cam extends from the watchband into a watch ledge in a watch side cavity and a second position where the cam is recessed in the watchband housing. A watch includes a watch housing, a watch cavity in the watch housing for receiving at least a portion of the watchband, and a button coupled to the watch housing and movable with respect to the watch cavity. In operation, the watchband is received in the watch cavity of the watch housing, which enables the cam to rotate into the first position to extend from the band into the watch ledge. The watch housing prevents the watchband from uncoupling with the watch in the first position of the cam due to the cam securing in the watch ledge. The user then depresses the button to move the cam into the second position, which is back within the watchband, to uncouple the watchband from the watch.