Abstract: The present disclosure relates to integration of integrated photonics-based optical gyroscopes and fiber-based optical gyroscopes into portable apparatuses that may include compass features. Novel small-footprint modularized fully integrated photonics optical gyroscopes are used for non-critical axes. However, for at least one critical axis, a fiber-optic gyroscope can be used to provide bias stability below 0.1°/Hr, which is directly correlated to predicting positional accuracy in the centimeter range. The positional accuracy results from the compassing ability of the gyroscope (referred to as gyrocompass) to calculate direction of heading using the earth's rotation.

Abstract: The present invention is a method and system of allowing a user to receive additional information regarding broadcast content. A user's playback device is provided with an “Info Button” that can be clicked by the user to tag the content or sub-content while experiencing the content or sub-content. The user can be provided with information and/or commerce opportunities relating to the tagged content. Identifiers, markers and fingerprints that can identify the individual content and sub-content can be captured by the playback device when the Info Button is clicked. A Content ID can be transmitted or played back with the content and can be a unique identifier to the content. Further, a Broadcast ID, a FSA ID and a Device Manufacturer ID can also be transmitted or associated with the content.