Dynamic DC-offset determination for proximity sensing

A method comprising:

• receiving a received power signal from a distance sensor on a mobile device;
• detecting a user event on said mobile device at a time;
• inferring a range to a reflective object from said distance sensor at said time;
• subtracting from said received power signal an expected reflected power value associated with said inferred range;
• and
• estimating a DC offset component of said received power signal at said time responsive to said user event.

A mobile device comprising:

• one or more inertial sensors to provide signals representative of orientation of said mobile device;
• a distance sensor to provide a received power signal;
• infer an orientation of said mobile device based, at least in part, on said signals provided by said one or more inertial sensors;
• infer a range of said distance sensor to a reflective object based, at least in part, on said inferred orientation;
• and
• a DC offset component manager to estimate a DC offset component of said received power signal based, at least in part, on said signals provided by said one or more inertial sensors.

An apparatus comprising:

• means for receiving one or more signals from one or more inertial sensors on a mobile device;
• means for receiving a received power signal from a distance sensor on said mobile device;
• means for inferring an orientation of said mobile device based, at least in part, on said one or more signals received from said one or more inertial sensors;
• means for inferring a range of said distance sensor to a reflective object based, at least in part, on said inferred orientation;
• and
• means for estimating a DC offset component of said received power signal based, at least in part, on said one or more signals received from said one or more inertial sensors.

A mobile device comprising:

• one or more inertial sensors to provide signals representative of orientation of said mobile device;
• a distance sensor to provide a received power signal;
• and
• a special purpose computing device configured to infer an orientation of said mobile device based, at least in part, on said signals provided by said one or more inertial sensors, infer a range of said distance sensor to a reflective object based, at least in part, on said inferred orientation, and estimate a DC offset component of said received power signal based, at least in part, on said signals provided by said one or more inertial sensors.

A non-transitory article comprising:

• a storage medium comprising machine-readable instructions stored thereon that are executable by a special purpose computing device to:
• receive one or more signals from one or more inertial sensors on a mobile device;
• receive a received power signal from a distance sensor on said mobile device;
• inferring an orientation of said mobile device based, at least in part, on said one or more signals received from said one or more inertial sensors;
• inferring a range of said distance sensor to a reflective object based, at least in part, on said inferred orientation;
• and
• estimate a DC offset component of said received power signal based, at least in part, on said one or more signals received from said one or more inertial sensors.