Abstract: A radio communication system includes a plurality of Bluetooth radio devices. Each device has a microphone, an audio output, such as a loudspeaker, and a short range radio transceiver capable of communicating digital data with a plurality of compatible neighboring radio devices. Each radio device is configured to receive outgoing audio data from a first neighboring radio device, to mix an input audio signal received at the microphone with the received outgoing audio data, and to transmit the combined audio data to a second neighboring radio device. Each radio device is further configured to receive incoming audio data from the second radio device, to output an output audio signal corresponding to the received incoming audio data to the audio output, and to re-transmit the received incoming audio data to the first radio device. The radio devices form a communication chain, and each radio device is in communication with a maximum of one first radio device and one second radio device.

Abstract: The invention provides a method for transmitting data from a vehicle. The vehicle is provided with a monitoring apparatus (1). The monitoring apparatus (1) comprises (i) a navigation device (2) that can determine the vehicles position, (ii) a memory device (4), and (iii) a telecommunication device (9). The method further comprises recording a first list of locations on the memory-device so that the telecommunication device is activated in response to the vehicles position.

Abstract: A radio communication system includes a plurality of Bluetooth radio devices. Each device has a microphone, an audio output, such as a loudspeaker, and a short range radio transceiver capable of communicating digital data with a plurality of compatible neighbouring radio devices. Each radio device is configured to receive outgoing audio data from a first neighbouring radio device, to mix an input audio signal received at the microphone with the received outgoing audio data, and to transmit the combined audio data to a second neighbouring radio device. Each radio device is further configured to receive incoming audio data from the second radio device, to output an output audio signal corresponding to the received incoming audio data to the audio output, and to re-transmit the received incoming audio data to the first radio device. The radio devices form a communication chain, and each radio device is in communication with a maximum of one first radio device and one second radio device.

Abstract: An interface device (10) for enabling wireless data communication between a host device (12) and a remote device (14) has a host serial interface (16) which is connected to the host device (12) and a wireless interface (18) for wireless data communication with the remote device (14). The interface device (10) also has a wireless interface controller (22) which is configured to control the operation of the wireless interface (18) to enable data communication between the host device (12) and remote device (14) via the interface device (10). A memory (26) in the interface device (10) stores a BASIC computer program and an interpreter (24) reads successive program commands from the memory (26) and converts the program commands into corresponding control commands for the wireless interface controller (22). The interface device (10) has the particular advantage that the same BASIC program may be used to operate interface devices using different wireless interface protocols simply by configuring the interpreter.