A control system includes receiving module for receiving a signal from a transmitting unit. Also included is a microprocessor including an input port for inputting the signal from the receiving module so as to decode the input signal and control the loads of an appliance and an output port for outputting an input control signal with respect to the input port. A signal input control section is connected between the input and output ports for directing the signal from the receiving module either to be applied or cut off to the input port of the microprocessor.
A remote-control signal receiver includes an input apparatus to input remote-control signals consisting of data trains repeated at a predetermined frequency, a data incorporating apparatus by which the remote control data derived from the remote-control signal is incorporated into a micro-computer by using the input apparatus, a setting apparatus by which the blank period between the data trains of the remote-control signal incorporated by using the input apparatus is set, and a limiting apparatus to limit the data incorporation period.
A method for modulating a radio signal has the steps of: predetermining a first time interval so as to define a data word; generating a synchronization pulse, the synchronization pulse initiating a single data word having a length of the predetermined first time interval; and generating a single data pulse within the data word after a second time interval with respect to the synchronization pulse, the length of the second time interval defining at least one character. Defining at least one character by a single data pulse after a second time interval with respect to the synchronization pulse enhances an energy efficiency of the transmitted radio signal while mitigating a duty cycle thereof.
An infrared communication system for transmitting a digital bit stream by telemetry in the presence of background radiation wherein each bit in the data stream is represented by a signature set of pulses designating either a binary one or a binary zero. A receiver detecting an infrared signal filters the signal to detect the signature sets of pulses generated by the transmitter. The pulses are transmitted according to a specific communications protocol.
A high speed serializer-deserializer (SerDes) that passes significantly more data through a channel for a given analog bandwidth and signal-to-noise ratio. This SerDes technique involves converting a plurality of bits to be transferred to positions of edges of a waveform that is transmitted over at least one transmission wire from a source to a destination. The plurality of bits are converted to edges in order to position edges such that more than k inter-edge spacings are possible over a range of spacings between T and kT, where k is a real number greater than 1 and T is the minimum spacing between consecutive edges. An edge position translation scheme that maps patterns in a stream of input bits to a corresponding spacing between a rising edge and a falling edge of the waveform, or between a falling edge and a rising edge of the waveform. The bits are recovered at the destination by detecting the edges in the received waveform at the destination and driving a stream of binary numbers representing time intervals between detected consecutive edges (inter-edge spacings). The stream of binary numbers is decoded according to the edge position translation scheme to recover corresponding bits.