In a communication system wherein repeater stations and terminal stations are connected in tandem, a supervisory system in which a logical hierarchical configuration is used for the transmission of supervisory information regarding the stations and a redundant polling is used to easily and securely collect the supervisory information from the slave or repeater stations or the like. Whereby, if faults occur in some of the stations, the collection of the information is carried out without interrup...

Receiver (105) for signals transmitted according to an orthogonal frequency division multiplexing technique with carriers distributed symmetrically around a centre frequency f.sub.e, said receiver comprising a frequency synchronizer (116) for the local oscillator (214). The synchronizer (116) utilizes the fact that part of the side carriers are not transmitted to ensure in the lock-on mode a frequency synchronization having a wide lock-on range. It may also be used in the permanent mode with ver...

A rail system in a hyperbaric transfer system which has particular utility in transferring injured divers from an offshore decompression chamber to an onshore hyperbaric facility. Also disclosed is a gas metering system which has particular utility in supplying oxygen to an emergency transfer vessel.

A method and apparatus for coding an information signal are provided. In accordance with one aspect of the invention, the method includes the step of encoding all or a portion of the information signal with a first encoder to generate a first set of redundant bits (preferably r.sub.1 bits). The method further includes the step of passing a portion of (and possibly all) the information signal through a structured interleaver to generate an interleaved signal. The method then encodes all or a port...

The present invention provides a client station and method for controlling a telecommunications system, the telecommunications system including a central station and a server station. The server station is arranged to maintain an object model thereon representing the central station, and is connectable to the central station to send control signals to the central station in accordance with the object model. The client station comprises a communications manager for establishing a connection with ...

A control system for a switching system that is optimally flexible. In order to achieve this goal, the operating system of the control system contains a services management system that makes it possible for service processes to utilize other service processes for the implementation of their services without knowing their location in the control system.

Actual data which is satisfied by a condition string which can be judged within actual data is stored in each .alpha. memory, and combined actual data is generated from each of the .alpha. memories by a combined actual data generator, and the inter-actual data condition of the generated combined actual data is evaluated by an inter-data condition evaluation for actual data so as to specify an instance with no conflict resolution process being performed and to reduce the memory capacity necessary...

A microphone system for use in an environment where an acoustic source emits energy from diverse and varying locations within the environment. The microphone system has at least two directional microphones, mixing circuitry, and control circuitry. The microphones are held each directed out from a center point. The mixing circuitry combines the electrical signals from the microphones in varying proportions to form a composite signal, the composite signal including contributions from at least two ...

A conveyor system comprising a plurality of wheeled trucks, each of which has a tow pin extending downwardly in a slot in a floor that defines a track and along which a conveyor is moved. A bumper on each truck is adapted to be actuated upon engagement with an obstacle to energize a transmitter on the truck and direct a signal to a receiver along the track which thereupon de-energizes the conveyor interrupting the movement of all of the carriers. A light on the truck whose bumper has been actuat...

1. A three channel infrared passive fuzing system providing controlled deation position relative to a target for wide variations in relative velocity of a missile to a target and effective for head-on, side and tail approaches, comprising first, second and third channels each having means at different respective angles for receiving and detecting infrared radiation from a target, a first pulse generating means being connected to said first channel and being responsive to a signal caused by first...