Abstract: A system and method for the wireless transmission of information signals between a base station and a plurality of subscriber stations.

Abstract: A base station in a subscriber communication network for communicating signals between subscriber stations and an external communication network having a plurality of ports. The base station includes a communication circuit for enabling simultaneous communications between a plurality of the ports and a plurality of subscriber stations over a given communication channel having multiple sequentially repetitive time slots; a remote-connection processor for directing communications between the time slot assigned to a given subscriber station and a given external communication network port; and an exchange for connecting the communication circuit to the external communication network ports.

Abstract: A base station for use in a subscriber communication network for communicating signals between subscriber stations and an external communication network having a plurality of ports includes a communication circuit for enabling simultaneous communications between a plurality of the ports and a plurality of the subscriber stations over a given communication channel having multiple sequentially repetitive time slots; an exchange for connecting the communication circuit to the external communication network ports; and a remote-connection processor coupled to the communication circuit by the exchange and by a base-station control channel occupying a selected one of the time slots for monitoring the status of the other time slots and for causing the communication circuit and the exchange to complete a connection between a given external communication network port and a given subscriber station over a time slot assigned in response to the monitored status in accordance with a predetermined assignment routine.

Abstract: A system for the wireless transmission of multiple information signals utilizing digital time division circuits between a base station and a plurality of subscriber stations. The subscriber stations may be fixed or movable. The number of time division circuits is determined by the transmission quality of the signals. The base station is interconnected with an external information network, which may be analog and/or digital. The information signals are selected from the group consisting of voice, data, facsimile, video, computer and instrumentation signals. The modulation level of the signals and the power applied to the system are adjusted in accordance with signal error detection in the system. The system is provided with spatial diversity by using a plurality of antennas selectively spaced from each other to provide relatively high signal reception despite signal fading. The base station operates over a plurality of RF channel pairs.

Abstract: A modem including a modulator section for converting a bit stream, wherein each given number of successive bits defines a symbol, into a phase modulated intermediate frequency (IF) signal, the symbols in the modulator section being phase modulated and then digitally filtered to provide a filtered signal that, when converted into an analog signal, provides a modulation signal of a frequency that is centered about a predetermined frequency and deviates therefrom in accordance with the value of the phase modulated symbol, the analog signal then being filtered and passed to a mixer for up conversion to an IF signal; and a demodulator section for converting the IF signal into a bit stream, the demodulator section including a microprocessor which not only filters received digital signals but contains a memory for storing filter coefficients for use in the filtering of received digital signals; the modem being also operable in a training mode wherein a sequence of predetermined symbols is provided to the filter in t

Abstract: A function generating system such as a telephone ringer, which is sound or voice-controlled in that when the signal is first applied by the caller it results in a series of digits or other sounds emitted by the receiver. The caller follows each of these sounds by either a responsive sound or silence. When the responsive sounds correspond to a programmed code, the function is activated.