Patent
Energy conserving pulse keying technique for a radio control system
Kenichi Mabuchi,Komatsu Kojiro +1 more
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TLDR
In this article, the carrier wave exists only for the time between the trailing end of each control pulse and the leading end of the next control pulse, for the times between the first and the second control pulses, and for the periods between the last and the first control pulses.Abstract:
In a radio control system of the digital proportional control type in which a control signal whose period comprises a plurality of control pulses and a timing pulse is transmitted to control servomechanisms in response to the time width of each control pulse, the carrier wave exists only for the time between the trailing end of each control pulse and the leading end of the next control pulse, for the time between the trailing end of the timing pulse and the leading end of the first control pulse, and for the time between the leading end of the timing pulse and the trailing end of the last control pulse, in order to minimize consumption of the supply battery.read more
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Patent
Multiplex information transmission system
TL;DR: In this article, a system for transmitting information between at least two stations the information originating from free or engaged channels in a multiplex frame, each station comprising at least one transmitting circuit and one receiving circuit powered from a power supply, and means for detecting the free and engaged channels to provide a procedure for establishing an elementary frame in which the engaged channels are grouped side-by-side in the elementary frame.
Patent
Method for protection of contactless signal transmission from a transmitter to a receiver, and a signal transmission device
TL;DR: In this article, the authors proposed a method to prevent the possibility of a deliberately short range between the transmitter and receiver from being enlarged by manipulation by an intermediate transmitter/receiver.
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