Abstract: A protocol layer on top of the Bluetooth low energy (BLE) system of paired devices to provide transmission that allows arbitrary sizes of data to be sent. To guarantee transmissions, the transmissions may be validated and, if required, resent to replace data that was lost or corrupted. The protocol layer also supports Remote Procedure Calls to allow functions on either of two connected devices to be executed on one device on behalf of the other. A further protocol layer also allows high priority, short messages to temporarily interrupt the transmission of low priority, long messages.

Abstract: A protocol layer on top of the Bluetooth low energy (BLE) system of paired devices (110, 150) to provide transmission that allows arbitrary sizes of data to be sent. To guarantee transmissions, the transmissions may be validated (324) and, if required, resent to replace data that was lost or corrupted. The protocol layer also supports Remote Procedure Calls to allow functions on either of two connected devices (110, 150) to be executed on one device on behalf of the other. A further protocol layer also allows high priority, short messages (510) to temporarily interrupt the transmission of low priority, long messages (520, 530).

Abstract: An avatar personalized for a subject and used in movement analysis and coaching uses a 3D polygon mesh representation of a human, authored for one human skeleton model, with a different size (scaled) skeleton model, without producing visual artifacts. Dimensions of the scaled skeleton model can be determined from three or eight measurements of a subject or from scanning or photographic methods. The avatar animated based on motion capture data may be animated alone or with one or more other avatars that are synchronized spatially, orientationally, and/or at multiple times to allow a user to easily compare differences between performances. An information presentation in an animation may use pixel energies from multiple animation frames to ensure that the information remains relatively stationary and does not obstruct important visual details.