Abstract: In some embodiments, a wireless pairing method involves a touchscreen on a wireless host device combined with a switch on a wireless stylus device. The wireless pairing method uses the time-coincidence of a touch on the host device screen with the detection of a tip switch press on the stylus device as a mode of out-of-band communication to authenticate a pairing of the devices. In such embodiments, a user presses a tip portion of the stylus device against a pairing spot on the host device surface; the wireless devices then form a bonded pair if the touch and/or release of the tip portion of the stylus device with respect to the host device surface are within a pre-determined time co-incidence window of the detection by the host device of that touch and/or release of the tip portion of the stylus device.

Abstract: In some embodiments, a wireless pairing method involves a touchscreen on a wireless host device combined with a switch on a wireless stylus device. The wireless pairing method uses the time-coincidence of a touch on the host device screen with the detection of a tip switch press on the stylus device as a mode of out-of-band communication to authenticate a pairing of the devices. In such embodiments, a user presses a tip portion of the stylus device against a pairing spot on the host device surface; the wireless devices then form a bonded pair if the touch and/or release of the tip portion of the stylus device with respect to the host device surface are within a pre-determined time co-incidence window of the detection by the host device of that touch and/or release of the tip portion of the stylus device.

Abstract: The invented system includes a beacon affixed to the object subject to loss and a tracker held by the owner of the lost object, the tracker repeatedly, electronically ‘interrogating’ the beacon with a radio frequency (RF) signal, the beacon repeatedly responding to the interrogation, and the tracker effectively triangulating to determine the lost object's nominal location by a measure of distance and direction. In accordance with one embodiment of the invention, the tracker includes one or more antenna each coupled with a power amplifier to determine in real time the distance and direction of the beacon from the tracker. In this embodiment, the tracker indicates both distance and direction of the object-affixed beacon to the tracker-holding owner via a simple color-coded light array. In one embodiment of the invention, the invented antenna of which there is one (or more) includes a helically wound conductor of elliptical cross section disposed around the hollow interior surface of a hollow mandrel.

Abstract: An automatic audio switching system comprising first and second audio devices connected to the switching circuit and to the output speaker, said circuit comprising of a relay, switching device, diodes, a capacitor, resistor and a transformer. Said transformer boosts up received ac voltage, then the diode rectifies the ac to dc, the capacitor and resister make a 2 second timer, the transistor switch, switches to ground changing the pole of said relay thus changing output of the system from one audio system to other.