Dot-matrix display

Abstract: A dot matrix display system made up of light emitting diodes (LED's), n which one or more LEDs are modulated and encoded with audio information or messages is disclosed. The system has a LED dot matrix display panel with an interface circuit to a computer, an audio signal transmitter, and a receiver. An executive program runs on the computer for the visual display control of characters, decorative pattern or messages on the display panel. The receiver combined with a speaker is located at a distance from the display panel. The receiver is designed to demodulate the optically transmitted audio information and broadcast the messages with the speaker. The modulation of the LEDs includes a voltage-controlled oscillator (VCO) for varying the frequency of on/off periods of said light emitting diodes. The frequency is high enough such that the perceivable light appears to be constantly illuminated to the human eye.

Abstract: A dynamic transaction card that includes a transaction card having a number of layers, each of which may be interconnected to one another For example, a dynamic transaction card may include an outer layer, a potting layer, a sensor layer that may be utilized to activate a dynamic transaction card by authenticating the card user as authorized to use the card through user authentication input recognition, which may be gesture and voice recognition processing, a display layer (including, for example, LEDs, a dot matrix display, and the like), a microcontroller storing firmware, Java applets, Java applet integration, and the like, an EMV™ chip, an energy storage component, one or more antenna (eg, Bluetooth™ antenna, NFC antenna, and the like), a power management component, a flexible printed circuit board (PCB), a chassis, and/or a card backing layer

Abstract: A portable noncontact thermometer comprising a hand-held housing defining an aperture for ingress of incident thermal energy from a target location. A thermometer module includes a noncontact thermal energy detector impinged by the incident thermal energy. The thermometer module further includes a microcontroller operative to interpret electrical signals derived from an output of the noncontact thermal energy detector so as to determine temperature at the target location. A graphical display device, such as an LCD dot matrix display device, is fixed with respect to the housing. The display device is capable of providing a graphical user interface having multiple screens variously showing numbers, text and functional icons. Preferably, the screens will display function tabs located adjacent to corresponding buttons on the housing. The tabs will change depending on the varying function that may be implemented by pressing a respective button. The thermometer also includes circuitry, which include the microcontroller, in electrical communication with the graphical display device so as to produce the graphical user interface.

Abstract: A switch/display unit comprises a dot matrix display, having two sets of elongate electrodes, one set being inclined to the other, these sets being applied to opposite sides of a display medium. A transparent dielectric panel is superimposed in front of the display, so that the first set of electrodes, which are formed from a transparent conductive material abut the rear surface of the dielectric panel. A transparent conductive layer is formed in front of the dielectric panel, so that it will capacitively couple electrodes of the first set of electrodes with other electrodes of the first set of electrodes or other electrodes on the rear surface of the dielectric panel. This capacitive coupling may be varied by touching or moving the conductive layer. By applying read pulses to one of the sets of electrodes that are capacitively coupled via the conductive coating and sensing the pulses transmitted to the other electrodes, actuation of the switch can be detected. Circuitry is also provided to apply display control pulses to the first and second sets of the elongate electrodes, so as to provide a display which may change in response to actuation of the switch. Several such switch/display units may be combined into an array, utilizing a common dielectric panel and other components.