Abstract: Appliances (102, 102, 106 and 108) are controlled by providing a source (2016, 112) of command fields (CMD, FIG. 2) that include a context subfield (Community, FIG. 4) defining operating modes and a command subfield (Command, FIG. 4) defining operations to be performed within the context subfield. A network (119) transmits the command fields between the source and the appliance. A controller (112, 116) processes the command fields so that an operation defined by one of the command subfields is performed.

Abstract: A refrigerator includes a fresh food section and a freezer section, wherein at least one of the fresh food section and freezer section include a door. The door includes an external surface and an internal surface, and a light mounted to the external surface, wherein the light is electrically coupled to a processor-free light fade-out circuit.

Abstract: A method for controlling speed in a pulse-width-modulation-controlled motor powered by a load voltage source is provided. The method includes the steps of measuring the motor load voltage, and setting a pulse-width-modulation duty cycle based on the measured voltage.

Abstract: An appliance control system is configured to operate an appliance in at least a normal mode and a holiday mode wherein normal mode operation of appliance feature elements is altered to better conform to religious customs, such as Orthodox Jewish customs. In response to user manipulation of a control interface panel, the control system is configured to enter the holiday mode upon user manipulation of the control interface panel with a designated key sequence. When in the holiday mode, response to user manipulation of the control interface panel is delayed for a randomly determined time, and appliance features of the normal mode that violate religious custom are disabled.

Abstract: A method and apparatus for service diagnostics of appliances includes connecting to a local area appliance network, accessing an appliance in the local area appliance network, accessing functions of the appliance, and performing service diagnosis of the appliance using the functions. A diagnostic interface is used to diagnose and service the appliance. The local area appliance network may be a power line carrier communication carrier network. The diagnostic interface may connect to a remote system for service diagnostic information.

Abstract: A detection apparatus for detecting refrigerator door openings is coupled to at least one switch configured to be activated by a door opening. When the door is opened, the switch is activated and inputs a signal to the detection apparatus. The detection apparatus rectifies the signal; and phase-shifts the rectified signal so that it leads or lags the line voltage. The shifted output signal is fed to a processor that detects the opening of the door based upon the shifted signal. Signals output by a plurality of switches that generate a signal when activated mixed using an opto-coupler. Relative impedance of the lead and lag circuits may be adjusted to differentiate a phase shift of one shifted signal relative to another signal. The processor converts a value in degrees of phase shifting of the mixed signal to a time value, and based upon the time value, the processor determines which of the doors is open.

Abstract: A control system for an appliance utilizing a plurality of peripheral devices includes a controller and a communications bus coupled to the plurality of peripheral devices and to the controller. The controller is configured to receive data from the peripheral devices over the communications bus and transmit control operations to the peripheral devices based on the data received. The communications bus reduces overall wiring requirements due to elimination or reduction of power wiring of the peripheral devices, facilitates distributed displays and human machine interfaces, and allows model differentiation with late point identification by a population of bus connections with a sensor, display, interface, or a blank. A data collision detection scheme is also provided to ensure proper communication along the bus.

Abstract: A method for changing a control program that controls at least some operations of an appliance is provided. The appliance includes at least one electronic control that executes the control program. The method includes connecting the electronic control to a communication device configured to communicate with at least one user device via a network. The method also includes changing the control program via the user device and the network.