Abstract: A system for processing decaying periodic physiological signals comprises at least a sensor, a physiological signal-digitizing device, and a digital-signal processing unit to establish a parameterized database according to Pji, Sji, the relationship between Pji and Sji and the change with respect to time or locations of the sensors on the human body for evaluating the physiological or mental conditions. The system is applicable to processing and utilizing the decaying periodic physiological signals, such as heartbeats, respiration and ECG.

Abstract: A system for processing decaying periodic physiological signals comprises at least a sensor, a physiological signal-digitizing device, and a digital signal processing unit to establish a parameterized database according to Pji, Sji, the relationship between Pji and Sji and the change with respect to time or locations of the sensors on the human body for evaluating the physiological or mental conditions. The system is applicable to processing and utilizing the decaying periodic physiological signals, such as heartbeats, respiration and ECG.

Abstract: A plug and play scheme for IP based devices and their failover schemes for quality of services includes establishing a infrastructure in the Internet so that the IP based devices can be plug and play in the present or oncoming Internet. Through the Dynamic IP and the Internet, a visitor can connect with an IP based device by broadcasting and send or receive information without going to through servers so that the data traffic in the Internet will be reduced. Additionally, with a plurality of the bridge servers being backup with each other, the transmission quality can be insured by means of automatic data transmission through the bridge servers if the connection between the visitor and the IP based device breaks. Furthermore, the infrastructure includes several failover ways to ensure the link between the visitor and the IP based device and reduce the risk of losing connection with the Internet.

Abstract: An audio conference system with the quality-improving features by compensating sensitivities of microphones was developed to increase the exercise range of microphones and greatly improve the output quality. The audio conference system includes a microphone array, which is consisted of at least three microphones with known locations, a converter, which digitizes analog signals, a processor, two digital gain controls, and a digital compensation software. The quality-improving advantage is obtained by the method that the travel time differences form voice source to the respective microphones are distinguished, that the location of the voice source is calculated and located and that particular microphones are selected for compensating the sensitivity. Consequently such an Audio Conference System would allow a conference held in a large space and with multiudinous conferees, and be usable for remote conference through phone, Internet or other communication method.