A signaling assembly is described and which includes a semitransparent substrate, a light emitting assembly which is disposed in spaced relationship relative to the semitransparent substrate and which when energized emits electromagnetic radiation; and an opaque light orientation assembly which is positioned adjacent to the semitransparent substrate and which permits electromagnetic radiation to pass through the semitransparent substrate at an oblique orientation.

A signalling system is provided which can be used to update the prices of goods which are electronically displayed on supermarket shelves (1). The signalling system comprises a first signalling device having an input terminal for receiving electrical message data received from a central computer system (5), a spread spectrum encoder for encoding the received message data and an electroacoustic converter (11) for converting the encoded data into corresponding acoustic signals and for transmitting...

A signalling mechanism includes a switch having a handle manually movable between first, second and third positions. The switch controls the operation of a light to be attached to it, a porch light or yard light, for example. A circuit interrupting device is activated when the switch is the second position and intermittently illuminates the light. The mechanism also has a position indicating device, a small lamp for example, which is controllably activated for indicating a position of the switch...

The signalling baton consists of a cylindrical tube made of unbreakable transparent material and sealingly closed at its ends by a handle and a plug. this tube contains a plurality of reflectors arranged in the form of a prism and retained between the handle and the plug.

The invention relates to methods for transmission of signalling data in cellular telecommunication networks. According to the invention, multiple radio bearers can be allocated for transferring signalling traffic, but all higher layer signalling is in any case taken through the RRC protocol. In the inventive method, MM and higher layer messages are sent using RRC DIRECT TRANSFER messages, but a separate RLC entity is set up for RRC DIRECT TRANSFER messages. In various embodiments of the inventio...

A measurement probe 1 for a machine tool has a housing 4/5 incorporating a window 6 which allows the optical transmission or receipt of signals from/to infrared transmitters 12 or receivers 13. To obviate the need to mount the transmitter and receiver components on an external surface of the housing, they are surface mounted to a circuit board 8'.

The invention concerns control of connections in cellular telecommunication systems, particularly setting up and releasing of connections. According to the invention, during setting up of a new MM connection it is checked whether an RRC connection is already active. If an RRC connection is already active, explicit signalling is used. Otherwise, RRC level events can be used to implicity control MM level events. During releasing of MM connections, it is checked if another MM protocol uses RRC conn...

A signalling beacon comprised of a lighting indicator which is mounted in a body enabling the stacking thereof. An energy accumulation device, at least one photovoltaic cell and an electronic device of the beacon are in the beacon. The electronic device has a radio frequency receiver circuit to receive radio communication signals which are emitted by an emitter circuit, and a light indicator control circuit. The light indicator control circuit includes a timer, a logic circuit intended to the po...

An auxiliary signalling and warning device for utilization on vehicles which make wide turns comprising a main body section that is at least partially reflectorized and a light lens member that is adapted to be secured to the main body section so as to form an enclosure. The light lens member is provided with a written message indicating that the vehicle negotiates wide turns. Light bulb retaining means is provided in the main body section for receiving and retaining light bulbs. Electrical conn...

A device for under-water signalling has a chamber (38) which is normally closed by a replaceable element (39). A cartridge (16) in the device can be fired to release gas into the chamber and rupture the element (39), thus causing a sound wave to travel through the water and releasing the contents of the chamber into the water. When an end cap (13) has been removed to prepare the device for use, water pressure can act on a piston (23) to cause firing of the cartridge.