Systems, methods, and devices for enforcing do not disturb functionality on mobile devices
摘要
說明書
In another embodiment or as a variation of any of the above embodiments, one or more “presence” frequency tone may also be emitted from the speakers. These frequencies tone(s) would be emitted in equal power by all speakers. Preferably, such “presence” frequency tone(s) would be at a different frequency from any of the frequencies used for positioning determinations, as described above. These presence frequency tone(s) would enable the mobile device to determine that it is inside the vehicle or other designated/protected area. When the presence tone is used in the current system, the handset or other mobile device must first detect the presence frequency tone before it will interpret any other frequency tone for the purpose of determining its location within the vehicle. This may be especially useful in high noise and/or low fidelity environments. These “presence” signals could be utilized to improve the reliability of all of the above driver detection embodiments discussed above or, alternatively, such presence frequencies could be used as a standalone system.
