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2607results about How to "Improve simplicity" patented technology

Method and apparatus for deriving uplink timing from asynchronous traffic across multiple transport streams

A communication apparatus that shares precise return channel uplink timing information includes a common symbol timing reference and one or more control stations that each transmit independent asynchronous DVB data streams which evenly share the common symbol timing. The control stations each include respective delay trackers to determine broadcast transmission delays associated with the particular control station and transmission path. Each broadcast data stream includes the same non real-time frame marker and a transmission delay message particular to the respective control station. A remote receiver receives one of the broadcast streams and timestamps the non real-time frame marker with a local time of receipt. A timing recovery circuit determines an upcoming return channel frame start time by adjusting the local time of receipt by the particular broadcast transmission delay and a unique receiver offset time. A local transmitter subsequently uplinks a TDMA message in a predetermined time-slot after the return channel frame start time. The method for transmitting a frame synchronized message includes receiving a non real-time frame reference marker in a receiver, timestamping the received frame reference marker with a reception time, and subsequently receiving a control node timing differential at the receiver. The local reception time of the non real-time frame marker is corrected to determine the proper return channel frame transmit start time by applying the control node timing differential and the local offset time. Users then uplink a message during an assigned period after the return channel frame transmit start time.
Owner:HUGHES NETWORK SYST

Advanced real-time grid monitoring system and method

This invention deals with an advanced Real-time Grid Monitoring System (RTGMS) suitable for both single-phase and three-phase electric power systems. This invention provides an essential signal processing block to be used as a part of complex systems either focused on supervising and diagnosing power systems or devoted to control power processors interacting with the grid. This invention is based on a new algorithm very suitable for real-time characterization of the grid variables under distorted and unbalanced grid conditions. The main characteristic of this invention is the usage of a frequency-locked loop, based on detecting the grid frequency, for synchronizing to the grid variables. It results in a very robust system response in relation to existing technique based on the phase-angle detection since grid frequency is much more stable variable than the grid voltage/current phase-angle, mainly during grid faults. Moreover, the algorithm supporting this invention is very efficient and can be implemented in regular industrial microprocessors. These features make the RTGMS object of this invention ideal to be applied in the control of distributed generation systems (DGS), flexible AC transmission systems (FACTS), power quality conditioners (PQC) and uninterruptible power supplies (UPS). In all these systems, the fast and precise real time detection of the voltage and/or current sequence components under grid fault conditions is a crucial matter.
Owner:GAMESA INNOVATION & TECH SA

Antenna structure and communication terminal

The invention provides an antenna structure and a communication terminal. The antenna structure comprises a first antenna radiator, a second antenna radiator, a matching network, a frequency selectionnetwork and a signal source; the first antenna radiator and the second antenna radiator are coupled through a gap, the end, far away from the gap, of the first antenna radiator is grounded, a feed point is arranged on the first antenna radiator, and the end, far away from the gap, of the second antenna radiator is grounded; the first end of the matching network is connected with the feed point, and the second end of the matching network is connected with the first end of a signal source; the first end of a frequency selection network is connected with the first position of the second antennaradiator, and the second end of the frequency selection network is grounded; the second end of the signal source is grounded. The antenna structure is used for simultaneously generating a first resonance, a second resonance, a third resonance and a fourth resonance. One gap can excite to generate four resonances, more antenna frequency bands can be achieved by one broken gap, the number of brokengaps can be reduced, and meanwhile, the appearance simplicity and the structural strength of the whole machine are improved.
Owner:VIVO MOBILE COMM CO LTD

Apparatus and methods usable in connection with dispensing flexible sheet material from a roll

A powered dispenser for dispensing individual sheet segments from a continuous roll of sheet material provided with spaced tear lines comprises a powered feed mechanism, a releasable, powered drive mechanism, a powered transfer mechanism, a pair of web sensing sensors, a capacitive sensing system providing automatic sensitivity adjustment, and control circuitry. A dual power supply system provides a mechanical lock-out functionality, and the control system is protected from electrostatic build-up on the surface of the feed roller. The web sensor, and an antenna plate of the capacitive sensing system, are provided on respective printed circuit boards mounted in overlying relation. Utilizing signals received from the pair of web sensors and the capacitive sensing system, the control circuitry senses the presence of a user to activate the powered drive mechanism, and prevents further dispensing of the sheet material until a previously dispensed segment is separated from the roll. The web sensors detection of a leading edge of the sheet material initiates a predetermined interval of sheet material advancement providing a proper placement of successive tear lines. Various approaches may be utilized to accommodate inadvertent sheet “tabbing” scenarios. The web sensors, together with the control circuitry, are also used to detect the depletion, or absence, of a working roll of sheet material, whereupon the control circuitry controls the powered transfer mechanism to automatically transfer the web feed supply from a depleted working roll to a reserve roll. The powered transfer mechanism may include a motor driven transfer bar, or provide motor driven release of a spring biased transfer bar. Another arrangement allows for ready release of a roll core, and drop of the same into an open dispenser cover for removal.
Owner:GPCP IP HLDG LLC

Micro instrument terminal based on module joint and used for minimally invasive surgery robot

ActiveCN102488554AFlexible to completeThe total length of the closed-loop transmission remains unchangedDiagnosticsSurgical robotsSurgical departmentTarsal Joint
The invention discloses a micro instrument terminal based on module joints and used for a minimally invasive surgery robot. The micro instrument terminal comprises a rotary module of a first four-bar mechanism consisting of a module top end part, a module bottom end part, a lower support and first left and right connection pieces, and a rotary module of a second four-bar mechanism consisting of amodule top end part, a rotary connection shaft, an upper support and second left and right connection pieces; two ends of a first steel wire rope are connected with the top surfaces of the module topend parts, and the other two ends of the first steel wire rope are sequentially connected with a first rotary actuating device through the module bottom end part; two ends of a second steel wire ropeare connected with a rotary connecting shaft, and the other two ends of the second steel wire rope are sequentially connected with the first rotary actuating device through the module top end parts and the module bottom end part; and the upper part of the rotary connecting shaft is inserted into the central hole of a rotary rod and is in clearance and running fit with the rotary rod, and the rotary rod is connected with a surgery apparatus. Complex surgery can be more flexibly completed by adopting the device.
Owner:SHANDONG WEIGAO SURGICAL ROBOT CO LTD

Safety cartridge for retrievable medical filter

The present invention relates to a safety cartridge for a medical filter which can be inserted through a percutaneous access point, via a catheter or introducer, and placed in a blood vessel or other body passage. Filters may have features which are not longitudinally symmetrical, such as anchors or barbs which angle toward one end, or a retrieval hook at only one end. Depending on the physician's selection of the access point, the filter may be introduced to a desired site for treatment from opposing directions. However, it is desirable to introduce the filter with the desired alignment (inserting the desired end in first) regardless of where the selected access point is, and accordingly regardless of which direction of approach to the desired site. As a result, it is desirable to provide a safety cartridge. Cartridges hold filters in an initial compressed shape during storage and insertion into the patient. A safety cartridge may have labels and/or indicators corresponding to which approach direction is selected, showing which end of the cartridge, and so which end of the filter inside the cartridge, to insert first into a catheter or introducer. A safety cartridge may have uniquely shaped first and second ends, which match insertion port(s) on a catheter or introducer which correspond to the selected approach direction. Accordingly, the safety cartridge assists proper orientation of the filter during delivery and treatment.
Owner:CORDIS CORP
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