Abstract: A speed sensor for sensing rotating speed of a wheel having projections. An elongated tubular sensor body connects to a flange, the flange being adapted from mounting in a housing wall in proximity to the wheel. A Hall-Effect sensor is provided within the sensor body and circuitry is also located there for processing signals from the Hall-Effect sensor. The Hall-Effect sensor is positioned for sensing the projections of the wheel through a portion of a peripheral sidewall of the cylindrical sensor body so that the Hall-Effect sensor is "side-looking". An alignment mark is employed to position the Hall-Effect sensor in sensing alignment with the wheel. A diameter of the flange cooperates with a placement of a receiving aperture in the housing for setting a width of a gap between the portion of the sensor body through which the Hall-Effect sensor is sensing and the projections of the wheel.

Abstract: A transducer is provided which produces electrical pulses whose amplitude is constant, but whose frequency varies as a function of the rotational speed of a shaft. In addition, the number of pulses per revolution can be selected at the time of assembly by changing a single component. The number of pulses per revolution can be from 1 to 45. This transducer is housed in a compact die-cast aluminum housing suitable for applications as a vehicle, and for distance measuring. The housing has first and second apertures running transverse to each other and merging with each other in the housing, the first aperture receiving a tube having an open portion and an outer peripheral wall thereof. A Hall-Effect sensor is received in the tube so that the Hall-Effect sensor is positioned adjacent the open portion of the tube. The second aperture receives a rotatable shaft having a body with sensible elements thereon, the body being positioned to lie adjacent the Hall-Effect sensor.

Abstract: A control system for a microwave oven includes a magnetron power circuit, an electronic controller, and input control circuitry. The control system is adapted to be connected to a source of electrical power, typically an AC line supply. The line supply may be converted to DC for powering the electronic controller, however, the input control circuitry is structured to prevent connection of the power supply to the electronic controller until an intentional manual action occurs. This prevents the electronic controller from responding to noise or the like to become unintentionally powered and thus possibly operate in an undesired state. The input control circuitry includes switches associated with data input keys for temporarily connecting power to the controller when actuated. Such actuation of a data key enables the system to be powered-up and also to enter data.

Abstract: An integrated electronic control arrangement is disclosed in the illustrative environment of burner such as in a gas-fired furnace. The control incorporates a self-test feature which shuts down the furnace in the event of any one of a number of possible sensed faults. Self-testing occurs automatically before an attempt at ignition and during furnace operation. Proper functioning of the sensor which senses for induced air flow through the burner combustion chamber is tested prior to enabling a fan which causes that induced air flow. Air flow is confirmed by sending to and receiving back from the sensor a sequence of pulses. Should air flow not be sensed during a combustion period, combustion is terminated. A flame sensor is provided for determining the presence of a flame in the combustion chamber. During times when a flame should be present, pulse sequences are sent to and received back from the flame sensor to confirm that a flame is present.

Abstract: An integrated electroluminescent display (DCEL), in which the DCEL (11) is integrated into the substrate board (10), such as, for example, a printed circuit board, which carries associated electronic components (12), such as, for example, those which would make up a control circuit, the DCEL displaying pertinent information for the control circuit. The bottom electrode (13) for the DCEL can be copper foil, which is etched at the same time as the rest of the foil pattern (13A) used to electrically interconnect the control components (12) of the overall control circuit during the making of the printed circuit board. Thereafter, the phosphor layer (14) is printed onto the associated copper foil segments, and, finally, a glass (15), which has on its inner surface an appropriate pattern of tin oxide (16), is placed on top of the phosphor depositions.

Abstract: An integrated electronic control arrangement is disclosed in the illustrative environment of a gas-fired furnace. The control incororates a self-test feature which shuts down the furnace and displays a diagnostic fault code in the event of any one of a number of possible sensed faults. Self-testing occurs automatically before an attempt at ignition and during furnace operation. The self-test may also be initiated manually at any time the furnace is not operating. The control accepts digital information on daily temperature setback, weekend temperature setback and vacation setback in any one of several preset schedules and preset setback increments. The control has a multipurpose display for selectively showing component indicative failure codes, temperature setback schedules, time of day, and day of the week.

Abstract: An integrated electronic control arrangement is disclosed in the illustrative environment of burner such as in a gas-fired furnace. The control incorporates a self-test feature which shuts down the furnace in the event of any one of a number of possible sensed faults. Self-testing occurs automatically before an attempt at ignition and during furnace operation. Proper functioning of the sensor which senses for induced air flow through the burner combustion chamber is tested prior to enabling a fan which causes that induced air flow. Air flow is confirmed by sending to and receiving back from the sensor a sequence of pulses. Should air flow not be sensed during a combustion period, combustion is terminated. A flame sensor is provided for determining the presence of a flame in the combustion chamber. During times when a flame should be present, pulse sequences are sent to and received back from the flame sensor to confirm that a flame is present.

Abstract: An integrated electroluminescent display (DCEL), in which the DCEL (11) is integrted into the substrate board (10), such as, for example, a printed circuit board, which carries associated electronic components (12), such as, for example, those which would make up a control circuit, the DCEL displaying pertiment information for the control circuit. The bottom electrode (13) for the DCEL can be copper foil, which is etched at the same time as the rest of the foil pattern (13A) used to electrically interconnect the control components (12) of the overall control circuit during the making of the printed circuit board. Thereafter, the phosphor layer (14) is printed onto the associated copper foil segments, and, finally, a glass (15), which has on its inner surface an appropriate pattern of tin oxide (16), is placed on top of the phosphor depositions.

Abstract: A control system for a heating appliance, such as a microwave oven, includes a display and electronic circuitry for controlling operation of the appliance and the display. One of the control operations involves the timing of an interval, such as a cooking interval. Another such operation involves the selection of a power level. The display and a memory associated with the circuitry include predetermined dedicated time intervals and/or power level values depicted thereon and stored therein, respectively. Appropriate data-entry keys allow for the selection of these time and/or power values by slewing the display and thus the memory through the dedicated values. Separate keys may be provided for respectively incrementing and decrementing time and power.

Abstract: A control system for an appliance, such as a microwave oven or the like, is provided with an adaptive manual input and a display positioned in visual proximity with one another. Various operating sequences and/or modes of the appliance are represented by symbols which may be displayed. Those operating sequences may be selected for implementation by actuating an input associated with the respective display. The symbols are contained in a plurality of groups which are displayed separately in time from one another. Actuation of a particular input associated with the display of a particular symbol also serves to display a new symbol group in accordance with a predetermined programming schedule. Typically, the functional sequences of the appliance are organized as a plurality of selectable principal modes each comprised of one or more selectable modes or sequences. Various prompting statements may also be automatically displayed to aid the user in programming the control system.

Abstract: Apparatus is provided for playing a video game from a location remote from a television receiver or other CRT display apparatus. Other devices are provided for generating position indicating signals for game markers and transmitting said signals to remotely located video game circuitry by means of an optical link. The remotely located game circuitry cause markers to be displayed on the CRT display in accordance with said position indicating signals.

Abstract: A remote control transmitter and receiver for controlling all of the usual viewer-adjustable functions of a television receiver. A plurality of key/switches permit the viewer to select the channel to be tuned and the function to be controlled. Digital logic circuits generate pulse coded signals that identify channel numbers or controlled functions. Function level control pulses are generated by rotation of a code wheel connected to a thumb wheel to provide proportional control of selected functions. The pulse coded signals and function level control pulses are transmitted via an infrared optical link to the receiver where companion circuitry decodes the pulse coded signals and adjusts the levels of selected functions in response to the function level control pulses.

Abstract: A light receiver for use in a light activated remote control system. A modified cylindrical lens having a wide horizontal acceptance angle and a narrow vertical acceptance angle is directly coupled to a photodetector. The resulting combination provides optical gain with a minimum compromise in directivity.

Abstract: A light transmitter for use in a light activated T.V. remote control system. A modified cylindrical lens having a wide horizontal dispersion angle and a reduced vertical dispersion angle is directly coupled to a light emitting diode. The resulting combination provides a controlled light dispersion suitable for transmitting to a distant receiver location.