Abstract: A modulator for a communications system includes a spread spectrum coder and a pulse code modulator having a signal input port connectable to a signal output port of the spread spectrum coder. The modulator performs a robust and error free modulation and coding scheme by using a modified spread spectrum scheme combined with pulse code modulation. The communication system contains a low data rate, noise robust modulation and coding scheme using a very simple transmitter. This results in a very straightforward transmitter circuit, reducing size and costs of the transmitter.

Abstract: A pulse detector that uses electromagnetic waves for detecting a patient pulse in conjunction with the administration of defibrillation and/or CPR. Electromagnetic waves are applied to a patient blood vessel and the reflected electromagnetic waves are analyzed for a Doppler shift, which is indicative of a pulse. In some applications the pulse detector can be used as a stand-alone device in conjunction with the administration of CPR. In other applications, the pulse detector is included with a defibrillator and provides pulsatile information that is analyzed in addition to ECG information in determining resuscitation therapy, or following defibrillation to ascertain its success.

Abstract: It is an object of the invention to provide a user-friendly monitoring system with improved measurement quality, which is suitable for home use. This object is achieved according to the invention by a garment (1) comprising at least one dry electrode (2, 3, 4) for use with a monitoring system for monitoring physiological parameters of a recipient, the electrode (2, 3, 4) having a working surface which is to be brought into contact with the recipient's skin, characterized in that the working surface is automatically positioned at a point of close skin contact with a natural sweat layer present, if the garment (1) is worn by the recipient. The basic principle underlying the invention is that the position of the electrodes (2, 3, 4) on the body has an impact on the acquired signal quality. Therefore, it is an idea of the invention to arrange dry electrodes in positions of the garment (1) where close body contact is automatically obtained and a natural sweat layer is present, if the garment is worn.

Abstract: The invention relates to an emergency response system. The emergency response system (10) comprises a central station (4) for receiving information about emergencies, whereby position information of a victim is provided and stored in a look-up table (6) of the central station (4). The central station addresses a list (7) of publicly available actuatable emergency response devices and selects a suitable device. The central station (4) transmits a trigger signal by means of a suitable communication network (3) to the selected remote actuatable emergency response device (14), which comprises communication means (13) for activating the signaling means (15) upon receipt of the trigger signal. Also, the actuatable emergency response device (14) comprises storage means (11) arranged to store the position information of the emergency response device and the provided position information of the victim.