摘要:
A system (10) is provided for enabling biometric identification. The system (10) comprises at least two electrodes (12), a database (14) and a processor (13). The at least two electrodes (12) are to be applied to a face of a subject for capturing electrophysiological signals (51, 52, 53, 54) therefrom. The subject is one of the registered users. The database (14) comprises characteristic eye blink data of registered users. The processor (13) is operably coupled to the electrodes (12) and the database (14) and is operative to receive the electrophysiological signals (51, 52, 53, 54) from the at least two electrodes (12) during at least one eye blink of the subject, to derive eye blink characteristics from the obtained electrophysiological signals (51, 52, 53 54), to make a comparison of the derived eye blink characteristics with at least part of the characteristic eye blink data in the database (14) and to determine an identity of the subject, based on the comparison.
摘要:
An apparatus and method (4,5,6,7,2) for capacitive measurement of electrophysiological signals (1) suppresses or reduces motion artifacts by providing a feedback mechanism. An average voltage between a capacitive sensor electrode (1) and the body (3) is controlled so as to reduce or minimize motion-induced signals.
摘要:
A transmitting and a receiving apparatus, a system and a method of performing multi-user transmission to other transmission ends include broadcasting a request for transmission to the other transmission ends. A request is provided with a Medium Access Control MAC frame which includes a list of at least two identifications of receiving ends which are requested to reply to the request.
摘要:
In an OFDM mobile communications system, an algorithm for forming a preliminary estimate of the channel on pilot subcarriers is carried out. Based on this preliminary estimate, a channel property is estimated. This channel property is then used to decide whether to enter a mobile receiver mode or a stationary receiver mode. For example, in the mobile mode channel estimation is performed using only pilot symbols from the current symbol period, while in the static mode channel estimation is performed using pilot symbols from the current symbol period and pilot symbols from other symbol periods.
摘要:
The present invention relates to a transmitting apparatus, a receiving apparatus, a system, a signal, and a method of multi-user transmission, wherein transmission settings are divided into common signal information, containing settings/information relevant for multiple receivers and user stream specific information, containing settings/information relevant only to a related user stream. Furthermore, the common signal information may comprise at least one of a duration of the longest user stream field and multi-user resource allocation field, so that the receivers know the mapping of user streams to receivers.
摘要:
The invention is based on the idea that a lighting system can utilize its sensing and control functionalities to offer dynamic load management (e.g. demand response) services in an electrical grid. The present invention optimizes dimming levels of lighting sources of a lighting system by determining a solution for an optimization problem directed to determining new dimming levels such that power consumption of the lighting devices is reduced. During the determining the solution for the optimization problem, the present invention may take into account specific guarantees on illumination rendering, acceptable to different users, and differing illumination requirements in different spaces or rooms. By the lighting control of the present invention, predictable and effective load reductions may be achieved.
摘要:
The invention relates to controlling power consumption of a group of plurality of groups of power consuming devices by determining power consumption control value for controlling power consumption of devices of the group by use of at least one of the following: load shedding flexibility value of at least one group of plurality of groups, wherein the load shedding flexibility value of the corresponding group indicates maximum amount of power, by which power consumption of devices of the corresponding group can be reduced such that minimum power consumption permissible in the corresponding group is maintained; load restoration flexibility value of the at least one group of plurality of groups, wherein the load restoration flexibility value of the corresponding group indicates maximum amount of power, by which the power consumption of devices of the corresponding group can be increased such that maximum power consumption permissible in the corresponding group is maintained.
摘要:
A method for automatically monitoring consciousness of a person and triggering an alarm if the monitored person is not in a state of full consciousness is provided. The method comprises the steps: monitoring at least one aspect of the behavior of the person (S1); analyzing whether the monitored behavior of the person corresponds to an expected behavior for a state of full consciousness or not (S2, S2′); triggering an alarm if the analysis results in that the detected behavior does not correspond to the expected behavior (S3).
摘要:
In a receiver for processing OFDM encoded signals, wherein the OFDM encoded digital signals are transmitted by means of a symbol in each of subcarrier frequency channels, with at least some of said subcarriers containing user data symbols, an initial estimate of a channel frequency response is formed from magnitudes of user data symbols received in those subcarriers. Then, a correlation function of a channel impulse response is estimated by performing an inverse Fourier transform on the initial estimate of the channel frequency response, and the length of the channel impulse response is estimated by examining peaks in the estimated correlation function of the channel impulse response.
摘要:
The invention relates to controlling power consumption of a group of plurality of groups of power consuming devices by determining power consumption control value for controlling power consumption of devices of the group by use of at least one of the following: load shedding flexibility value of at least one group of plurality of groups, wherein the load shedding flexibility value of the corresponding group indicates maximum amount of power, by which power consumption of devices of the corresponding group can be reduced such that minimum power consumption permissible in the corresponding group is maintained; load restoration flexibility value of the at least one group of plurality of groups, wherein the load restoration flexibility value of the corresponding group indicates maximum amount of power, by which the power consumption of devices of the corresponding group can be increased such that maximum power consumption permissible in the corresponding group is maintained.