According to one example, a system includes a heat source operable to provide an amount of energy to be used to cook a food item, and further includes one or more processors. The processors are operable to receive an indication of a requested cooking temperature, and to receive a plurality of indications of measured temperature associated with the food item at different times. The processors are further operable to determine an integral term based on differences between the requested cooking temperature and the measured temperatures, to determine a heat loss term based on the integral term, and to determine an energy adjustment based on the heat loss term. The heat source is further operable to modify the amount of energy provided by the heat source in accordance with the determined energy adjustment.

Systems and methods of controlling communications using temperature and/or Radio Frequency (RF) signals are disclosed. In some embodiments, a method may include determining whether a user operating a communications device has at least temporarily transferred at least partial control of the communications device to another user based, at least in part, upon a change in at least one of: a temperature or an RF signal sensed at the communications device. The method may also include controlling an aspect of a communication conducted via the communications device based, at least in part, upon the determination.

Systems and methods of controlling communications using temperature and/or Radio Frequency (RF) signals are disclosed. In some embodiments, a method may include determining whether a user operating a communications device has at least temporarily transferred at least partial control of the communications device to another user based, at least in part, upon a change in at least one of: a temperature or an RF signal sensed at the communications device. The method may also include controlling an aspect of a communication conducted via the communications device based, at least in part, upon the determination.

In an example, an electronic device may monitor a rate of change of water pressure associated with a charged fire sprinkler system. The electronic device may determine whether the rate of change of water pressure is greater than a threshold. The electronic device may, in response to determining that the rate of change is not greater than the threshold, initiate a system recharge in which a fire pump of the fire sprinkler system is activated to attempt to recharge the water pressure.

A headphone control system for use within a headphone includes a temperature sensor for detecting whether the circumference temperature of the headphone is relatively far from the human temperature implying the headphone is no longer worn by the user, and a gravity sensor for detecting whether the headphone is stationary implying that the headphone is not used for enabling a power saving mode, or is moving implying that the headphone is not yet unused for maintaining operation. The detection constantly is applied to the headphone disregarding whether the headphone is in an operation mode or a power saving mode so as to efficiently have the headphone operated in response to currently using or power-saved in response to non-using.

A headphone control system for use within a headphone includes a temperature sensor for detecting whether the circumference temperature of the headphone is relatively far from the human temperature implying the headphone is no longer worn by the user, and a gravity sensor for detecting whether the headphone is stationary implying that the headphone is not used for enabling a power saving mode, or is moving implying that the headphone is not yet unused for maintaining operation. The detection constantly is applied to the headphone disregarding whether the headphone is in an operation mode or a power saving mode so as to efficiently have the headphone operated in response to currently using or power-saved in response to non-using.

A modular door and frame that can be manufactured and supplied to end users with various combinations of intelligent features. The intelligent features allow functions to be performed by the door and/or frame. Also, conditions or events to be detected and monitored at the intelligent door and/or remote locations. Data relating to the various functions, events, or conditions can be communicated across a network that is communicatively coupled to the door.

The invention comprises systems and methods for detecting the use of networked consumer electronics devices as indications of occupancy of a structure for purposes of automatically adjusting the temperature setpoint on a thermostatic HVAC control. At least one thermostat is located inside a structure and is used to control an HVAC system in the structure. At least one networked electronic device is used to indicate the state of occupancy of the structure. The state of occupancy is used to alter the setpoint on the thermostatic HVAC control to reduce unneeded conditioning of unoccupied spaces.

The invention comprises systems and methods for detecting the use of networked consumer electronics devices as indications of occupancy of a structure for purposes of automatically adjusting the temperature setpoint on a thermostatic HVAC control. At least one thermostat is located inside a structure and is used to control an HVAC system in the structure. At least one networked electronic device is used to indicate the state of occupancy of the structure. The state of occupancy is used to alter the setpoint on the thermostatic HVAC control to reduce unneeded conditioning of unoccupied spaces.

A thermostat system comprises a thermostat located on the inside of the building, comprising (i) a screen display, (ii) a control input for receiving thermostat programming information, and (iii) interface circuitry for coupling to an environmental system comprising one or more items of equipment selected from the group heating, ventilation, and air conditioning equipment. A doorbell is located on the outside of said building. Optionally a camera may be located proximate said doorbell.