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127results about How to "Delay" patented technology

Enhanced multi-user transmission

The present invention relates to a transmitting apparatus, a receiving apparatus, a system and a method of performing multi-user transmission to a plurality of other transmission ends (21-24), wherein a request for transmission is broadcast to said plurality of other transmission ends (21-24), and the 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.
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV

Zero delay frequency switching with dynamic frequency hopping for cognitive radio based dynamic spectrum access network systems

This invention relates to cognitive radio based wireless communications of dynamic spectrum access networks, and in particular to a method of addressing zero-delay frequency switching for cognitive dynamic frequency hopping. The method combines regular (periodic) channel maintenance with dynamic frequency hopping over a cluster of vacated channels that are initially setup such that the switching delays for channel setup and channel availability check are eliminated.
Owner:STMICROELECTRONICS SRL

Method and device for impulse response measurement

The invention discloses a method, a receiver and a wireless terminal for measuring an impulse response e.g. in a (W)CDMA terminal having at least two receiving antenna branches with diversity reception. In the method one antenna branch is selected, e.g. by choosing the antenna with a good signal to interference ratio. An impulse response is measured for the selected antenna branch (full IRM) with a searcher. The delays of the propagation paths of the radio channel are estimated by selecting the delay values, whose correlation value exceed a threshold value. The impulse response measurement for the other antenna branch is performed only on the selected delay values (reduced IRM) with the searcher. The finger allocation for the selected antenna branch can be done immediately after the full IRM and for the other antenna immediately after the reduced IRM. The finger allocation for all branches can alternatively take place after the reduced IRM, simultaneously. The invention may be implemented in at least one of a programmable device, dedicated hardware, programmable logic and any other processing device.
Owner:NOKIA CORP

Method and system for mounting circuit design on reconfigurable device

There is provided a system for generating configuration data for implementing a circuit design in a segmented reconfigurable device. A placement and routing design aiding system (30) includes a database (31) for storing hardware information (89) including data of PEs included in each segment and data of a first-level and second-level routing matrix and an apparatus (33) for mapping the circuit design onto the PEs. The mapping apparatus (33) generates mappings of the circuit design onto the PEs by carrying out an iterative algorithm that minimizes a cost function based on the hardware information (89). The cost function includes an item that minimizes usage of the second-level routing matrix (22) that connects between the segments.
Owner:FUJIFILM BUSINESS INNOVATION CORP

System and method for self-diagnosing system crashes

A system and method for self-diagnosing a likely cause of a system crash is disclosed. A mechanism within an operating system checks for the existence of a stop code at startup of the machine. The existence of the stop code indicates that the system crashed during the previous session, and the type of system crash. The mechanism may read the stop code and implement a self-diagnostic procedure that corresponds to that stop code. In this manner, the mechanism may automate many of the tasks normally performed by humans, such as a system administrator, to self-diagnose the likely cause of the crash. If the crash occurs again, the mechanism, through the tracking procedures automatically implemented, may identify and report to a system administrator the likely cause of the crash, e.g. the particular faulty driver or configuration error.
Owner:MICROSOFT TECH LICENSING LLC

Meander line antenna coupler and shielded meander line

InactiveUS20050225496A1Less ohmic lossEliminates down firingResonant long antennasRadiating elements structural formsResonanceEngineering
A switched meander line structure is substituted for a lumped element coupler (10) for an order of magnitude increase in gain due to the use of the switched meander line architecture. The use of the meander line (20) with relatively wide and thick folded legs markedly decreases I2R losses over wire inductors whose wire diameters at one-tenth of an inch contribute significantly to I2R losses. Additionally, placing solid state switches to short out various sections of a multi-leg meander line at high impedance nodes reduces I2R losses across the switching elements in the coupler. It has been found that, regardless of the impedance of the antenna, this impedance may be matched by switching in and out various sections of a folded multileg meander line due to the fact that the square of the sum of the capacitive reactances of the meander line decreases with frequency in synchronism with the unloaded Q of the meander line, thus to provide the ability to maintain a good match over frequency as the meander line is tuned to achieve resonance by shorting out combinations of sections of the meander line. The result of the substitution of the meander line architecture for the lumped element coupler is the reduction of losses associated with the use of wire inductors and losses due to the interposition of solid state switches at high-current nodes.
Owner:BAE SYST INFORMATION & ELECTRONICS SYST INTERGRATION INC

Streaming Virtual Reality Video

An improved streaming of a Virtual Reality [VR] video to a VR rendering device is provided. The VR video may be represented by a plurality of streams each associated with a different view of a scene. A view of the scene may be determined which is to be rendered by the VR rendering device. A subset of streams may be identified which is needed to render the view of the scene. The streaming of the subset of streams to the VR rendering device may be effected by streaming the plurality of streams from a stream source to a forwarding node downstream of the stream sources and upstream of the VR rendering device, and selectively forwarding the subset of streams from the forwarding node to the VR rendering device in response to the view having to be rendered by the VR rendering device. As such, the switching latency between streams may be reduced. Namely, streams which are not needed for rendering a current view, but which may be needed for rendering a next view, may be continuously made available at network nodes nearby the VR rendering device.
Owner:KONINK KPN NV +1

Direct memory access for advanced high speed bus

A memory system for use with a master-slave type bus such as an AHB bus has a memory, a bus interface to allow memory access from the bus, and a direct memory access interface to allow memory access from a DMA controller without occupying the bus. The system can reduce occupancy of the bus, it can allow dedicated DMA access protocols faster than the bus protocol to be used, and can remove or reduce the need for bus arbitration and associated circuitry and delays. An arbiter can arbitrate between the memory accesses and give priority to DMA accesses.
Owner:STMICROELECTRONICS BELGIUM
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