Raise gesture detection in a device with preheating of a processor

A device comprising:

• a user interface component having an active state and an inactive state;
• a motion sensor to detect motion of the device;
• and
• a first processor configured to:
• operate a motion sensor of the device to collect data samples at a sampling rate;
• detect in the device, a possible initiation of a raise gesture based at least in part on a most recent data sample;
• in the event that a possible initiation of a raise gesture is not detected, repeat the analyzing for a subsequent data sample;
• and
• in the event that a possible initiation of a raise gesture is detected:
• evaluate each of a sequence of subsequent data samples as either consistent or inconsistent with a raise gesture;
• increment a first count of data samples for each of the sequence of subsequent data samples that is evaluated as consistent with a raise gesture;
• increment a second count of data samples for each of the sequence of subsequent data samples that is evaluated as inconsistent with a raise gesture;
• and
• notify another component of the device of a preheat event in the event that the first count reaches a first threshold number before the second count reaches a second threshold number.

A computer-readable storage medium having stored therein program instructions that, when executed by a first processor in a device, cause the first processor to perform a method comprising:

• operating a motion sensor of the device to collect data samples at a sampling rate;
• detecting, by a first processor in the device, a possible initiation of a raise gesture based at least in part on a most recent data sample;
• in the event that a possible initiation of a raise gesture is not detected, repeating the analyzing for a subsequent data sample;
• and
• in the event that a possible initiation of a raise gesture is detected:
• evaluating, by the first processor, each of a sequence of subsequent data samples as either consistent or inconsistent with a raise gesture;
• incrementing a first count of data samples for each data sample of the sequence of subsequent data samples that is evaluated as consistent with a raise gesture;
• incrementing a second count of data samples for each data sample of the sequence of subsequent data samples that is evaluated as inconsistent with a raise gesture;
• and
• notifying, by the first processor, another component of the device of a preheat event in the event that the first count reaches a first threshold number before the second count reaches a second threshold number.