213 results about "Cycle length" patented technology

The present invention provides a method and apparatus for detecting and treating sleep respiratory events that includes a plurality of sensors gathering physiological data related to sleep respiratory events. A processor extracts an average cycle length and a frequency of at least one of Cheyne-Stokes respiration and periodic breathing based upon the physiological data, and determines whether therapy is required based on the average cycle length and the frequency.

What is described here is an antireflective coating comprising a carrier layer consisting of an optically transparent material, which, at least on one surface side, presents antireflective properties with respect the wavelengths of the radiation incident on the surface. Moreover, methods of producing the coating are described.The invention excels itself by the provision that the antireflective surface side presents a surface roughness with stochastically distributed structures-the so-called macro structures-and that the macro structures are additionally modulated with surface structures presenting a periodic sequence-the so-called micro structures-which present period or cycle lengths smaller than the wave lengths of the radiation incident on the antireflective surface.

An apparatus and method for receiving an MBMS (Multimedia Multicast/Broadcast Service) notification indicator is disclosed to discontinuously receive an MBMS notification indicator in a mobile communication system. A mobile terminal receives and stores a terminal-specific DRX (Discontinuous Reception) cycle length and the longest DRX cycle length broadcasted in a cell. The mobile terminal discontinuously receives a notification indicator for a specific MBMS during a terminal-specific DRX cycle length of the longest DRX cycle length by using the stored terminal-specific DRX cycle length and the longest DRX cycle length used in a cell.

In various described embodiments skip fire control is used to deliver a desired engine output. A controller determines a skip fire firing fraction and (as appropriate) associated engine settings that are suitable for delivering a requested output. In one aspect, the skip fire controller is arranged to select a base firing fraction that has a repeating firing cycle length that will repeat at least a designated number of times per second at the current engine speed. Such an arrangement can be helpful in reducing the occurrence of undesirable vibrations.

Systems and methods to assist in locating the focus of an atrial fibrillation include the association of atrial fibrillation cycle length values and statistics relating thereto with temporal locations on an electrogram of a given electrode, and/or the coordination of electrode locations with respective the spectral analyses of electrogram signals and further parameters and statistics relating thereto. Ablation therapy can proceed under guidance of such information.

A method for generating a parity check matrix of a block LDPC code is disclosed. The parity check matrix includes an information part corresponding to an information word and a first parity part and a second parity part each corresponding to a parity. The method includes determining a size of the parity check matrix based on a coding rate applied when coding the information word with the block LDPC code, and a codeword length; dividing a parity check matrix with the determined size into a predetermined number of blocks; classifying the blocks into blocks corresponding to the information part, blocks corresponding to the first parity part, and blocks corresponding to the second parity part; arranging permutation matrixes in predetermined blocks from among the blocks classified as the first parity part, and arranging identity matrixes in a full lower triangular form in predetermined blocks from among the blocks classified as the second parity part; and arranging the permutation matrixes in the blocks classified as the information part such that a minimum cycle length is maximized and weight values are irregular on a factor graph of the block LDPC code.

The mobile telecommunications network (n) has at least one mobile terminal (1) registered therewith. The network (n) has an active communication state with the mobile terminal (1) and an inactive communication state with the mobile terminal (1). Means Q; V for calculating an indication of the movement of the mobile terminal (1) within the network (n) in each of the states is provided. One embodiment is characterised in that, when the communication changes from a first of the states to a second of the states, the mobility indication calculated in the first of the states is used in the second of the states. In another embodiment, the indication of movement of the mobile terminal is calculated periodically at a time interval (CMCL). A value (DRX Cycle Length) which determines this time interval (CMCL) is transmitted by the network (n) to the mobile terminal (1). This second embodiment is characterised by including means for varying the time interval (CMCL) in dependence upon an indication of movement of the terminal (1).

A particular method includes receiving first data via a first network at a device that is configured to receive the first data via the first network based on a first wireless communication subscription and is configured to receive second data via a second network based on a second wireless communication subscription. The method also includes while receiving the first data, determining that a tuneaway period associated with the second network has passed, where the tuneaway period is longer than a discontinuous reception (DRX) cycle length associated with the second network. The method further includes tuning a receiver of the device to a paging channel of the second network in response to passing of the tuneaway period.

A system and related methods for assisting a user approximate the location of a fibrillation driver within a heart. The system includes an electrode and a computer, which is coupled to the electrode. The electrode is configured to sense a signal emitted from a location in the heart. The computer is configured to calculate a standard deviation of cycle length value for the signal. The user can approximate the location of the fibrillation driver based on a comparison of the standard deviation of cycle length value to other standard deviation of cycle length values that previously have been calculated by the computer for signals emitted from other locations in the heart.

There is provided a method of determining a discontinuous reception and/or transmission cycle length, the method comprising determining information relevant to the cycle length from a high layer in a protocol stack; providing the information to a lower layer in the protocol stack; and in the lower layer of the protocol stack, determining the cycle length from the information.

A cardiac rhythm management device includes a dual chamber pacemaker, especially designed for treating congestive heart failure. The device incorporates a program microcontroller which is operative to adjust the pacing site, AV delay and interventricular delay of the pacemaker so as to achieve optimum hemodynamic performance. Atrial cycle lengths measured during transient (immediate) time intervals following a change in the site, AV delay and interventricular delay are signal processed and a determination can then be made as to which particular configuration yields the optimum performance. Paced transient beats following periods of baseline beats are synchronized to the patient's respiratory cycle to minimize effects of respiratory noise on atrial cycle length measurements.

An apparatus for discriminating between cardiac events that includes an input circuit receiving signals indicative of the cardiac events, a first output circuit generating pulses in response to the received signals, and a microprocessor determining whether a signal received by the input circuit subsequent to the generated pacing pulses corresponds to a predetermined cardiac event in response to an elapsed time period between the generated pulses and the subsequently received signal and a predetermined discrimination threshold.

The invention relates to a control system, and discloses a navigation control method of a robot. According to the method, a road face image located in front of the robot is obtained periodically, whether a ground mark exists in the obtained road face image or not is detected, the position and direction of the robot are calculated on two occasions according to the detection result of whether the ground mark exists or not, and accordingly the walking direction and speed of the robot are controlled according to the calculated position and direction. Manufacturing cost of the robot is reduced; the position detection based on the coordinate system and the position detection based on the dead reckoning are both more accurate position calculation modes compared with the infrared detection, so that accurate control over the advancing route of the robot is guaranteed; furthermore, handling is conducted on two occasions according to whether the ground mark can be detected or not, so that the cycle length for obtaining the road face images can be free of limitation, and thus real-time calculation of the advancing direction and position of the robot is guaranteed.

The invention discloses a media access control method for a wireless sensor network, which is applicable to the field of wireless network design; wherein, network nodes are divided into cluster-head nodes and ordinary nodes; an operational process runs in a periodic mode and an operation cycle is divided into four stages, namely a synchronization stage, a data stage, a sleep stage and a request stage; the specific operational process comprises: the ordinary nodes send data traffic and routing information to the cluster-head nodes in the request stage of each cycle; the cluster-head nodes calculate the cycle length and the duty radio and send the cycle length and the duty radio to the ordinary nodes in the synchronization stage of the next cycle; the ordinary nodes receive a synchronization package, set own cycle length and duty radio and update the local time in the synchronization stage, carry out data communication in the data stage and enter a sleep state to reduce power consumption in the sleep stage. The method of the invention effectively solves the problems in the present wireless sensor network, namely the synchronization and the self-adaption of data traffic, reduces the energy consumption of nodes and the delay time of data packages and increases the transmissibility of data packages at the same time.

An internal communication system adapted for communicatively coupling a plurality of nodes during a cycle, wherein the cycle presents a cycle length and a plurality of static temporal slots. The system includes at least one communication channel, and an electronic control unit configured to optimize a schedule of time-triggered internodal messages, and the cycle length.