Abstract: A Lenz' Law demonstration device. The invention is a child's educational toy that demonstrates magnetics, Lenz' Law (which creates a current within the tube by creating a magnetic field that opposes the field of the falling magnetic—making the magnet fall more slowly as opposed to a nonmagnetic drop that would fall at the speed of gravity). A magnet is dropped into a larger diameter copper (or other ferromagnetic material) tube. The magnetic resistance then causes the magnet to drop at a slower speed in the tube therefore creating the appearance of anti-gravity and generating an electrical charge through the resistance.

Abstract: Each player places at least one game wager. Game wagers include player hand proposition wagers on the composition of the player hand and inclusion of game indicia having predetermined characteristics in the player hand; competitive wagers on the comparison of the player hand to other player hands and/or a dealer hand; and individual game indicium proposition wagers on an identified characteristic of a designated game indicium of the player hand. Player hands, and optionally a dealer hand, are dealt. Wagers are resolved and rewards are issued for winning wagers.

Abstract: Techniques for increasing the capacity of a radio link, using radio signal superimposing in space and frequency and subsequent signal restoration, are described. Each of the transmitting and receiving systems are connected to a plurality of collocated antennas. The signals that are superimposed are recovered by one or a plurality of restorers. The disclosed method of signal processing involves appropriate filtering of signals, then summing them in order to restore the original individual signals and to cancel out all undesired signals received as a result of superimposing. Preferably, the spacing between antennas is optimized so that while the undesired signals are minimized or canceled out, the restored signals are maximized. In simple situations, signal filtering may be reduced to phase adjustment of the signals and the restoration may be done at RF, IF or baseband. In more complex situations, general adaptive filters implemented in baseband may be preferred.

Abstract: A radio control system for a single or multi-controller, single or multi-receiver independently controlled system providing digital and proportional control without mutual interference, especially suited for a miniature toy vehicle. The controller may operate on multiple frequencies (channels) selected by the user. The receivers may receive on multiple frequencies (channels) selected by the user. When the receiver is first turned on, it reads the channel select switch and sets its receiver accordingly then normal remote control signals may be received such as speed, steering and digital commands. Commands are sent in bursts with an error checking protocol implemented. Commands are not executed by the receiver unless they are received error free. If the receiver fails to receive error-free command bursts within a short period of time (less than one second), it shuts off all motors and controls and go into a dormant state awaiting an error-free command burst.