Abstract: A method for detecting encoded digital data from a substantially sinusoidal waveform, the encoded digital data having one of a first value and a second value at selected phase angles ?n comprises generating the waveform having an amplitude Y defined by a first function at phase angles lying outside of regions having a range ?? beginning at each phase angle ?n, said first function being Y=sin ?; generating the waveform having an amplitude Y defined by the first function at phase angles lying inside the regions having a range of ?? beginning at each phase angle ?n where data of the first value is to be encoded; and generating the waveform having an amplitude Y defined by a second function at phase angles lying inside the regions having a range of ?? associated with each phase angle ?n where data of the second value is to be encoded, the second function being different from Y=sin ?, the detection including deriving sync pulses from minima and maxima of the substantially sinusoidal waveform to frame data words.

Abstract: A method for generating a substantially sinusoidal waveform containing encoded digital data having one of a first value and a second value at selected phase angles ?n comprises generating the waveform having an amplitude Y defined by a first function at phase angles lying outside of regions having a range ?? beginning at each phase angle ?n, said first function being Y=sin ?; generating the waveform having an amplitude Y defined by the first function at phase angles lying inside the regions having a range of ?? beginning at each phase angle ?n where data of the first value is to be encoded; and generating the waveform having an amplitude Y defined by a second function at phase angles lying inside the regions having a range of ?? associated with each phase angle ?n where data of the second value is to be encoded, the second function being different from Y=sin ?.

Abstract: Disclosed is a method and apparatus for activating a gaming machine. The invention includes generating a visible light column at a light generating end when the gaming machine is in a ready state. The invention further includes receiving the visible light column at an a light intensity determining circuit. The light intensity determining circuit being configured to monitor disturbances along the visible light column. Then, activating the gaming machine when the light intensity received at the light intensity circuit moves beyond a predetermined level while in the ready state.

Abstract: An antenna for a wireless network is disclosed. The network includes multiple gaming machines such as slot machines or video poker machines located in an establishment. These machines communicate certain playing data (coin-in, coin-out data, etc.) to a central computer over the wireless network. Antennas for the gaming machines are located in a conventional candle on top of the gaming machine. Such candles typically contain one or more lights which when illuminated indicate a certain event such as a jackpot being hit. The disclosed antenna is unobtrusively located within a conventional candle structure so that from its exterior, a candle antenna appears to be a normal candle of the type typically used on gaming machines. However, interior to the candle antenna is an antenna capable of sending and receiving signals of a particular radio frequency band.

Abstract: The present invention comprises a method for measuring the amount, i.e., mass, of a volatile liquid which comprises passing the mass over a heat loss measuring device, calculating the amount of heat loss accompanying the vaporization of the mass and correlating the heat loss to measurement of heat loss of known liquid aerosol mass made with the same device.

Abstract: A pneumatic apparatus for withdrawing and recycling goods from defective blister packages on a blister packaging machine comprising a housing which is positioned on the blister packaging machine between the detection station and the sealing station and having a plurality of transversely spaced-apart open chambers in the bottom thereof. A plurality of air valves are connected to a high air pressure source and to the blister package machine detection station, and each air valve corresponds to a respective chamber in the bottom of the housing. A plurality of air venturi nozzles are provided wherein each air venturi nozzle is fluidly connected at its air pressure input end to a corresponding air valve and chamber.