59 results about "Partial coverage" patented technology

In a raster stage of a graphics pipeline, a method for accelerated start tile rasterization. The method includes defining a window for clipping a generated image and receiving a graphics primitive for rasterization in a raster stage of a graphics processor. A binary search related to the window is performed to determine a start tile having at least a partial coverage of the graphics primitive, wherein the start tile comprises a plurality of pixels. Based upon the start tile, the raster stage rasterizes the graphics primitive by generating a plurality of adjacent tiles having at least a partial coverage of the graphics primitive.

The embodiment of the invention provides a method and a device for determining wireless network coverage rate. The method is an effective combination of a road testing method and a coverage emulation method, and comprises the following steps: in grids where measurement points are located, replacing part of the wireless network parameter emulation values obtained by the coverage emulation method with the wireless network parameter measurement results obtained by the road testing method, and determining the wireless network coverage of the network coverage evaluation area by using the replaced wireless network parameter emulation values and the non-replaced wireless network parameter emulation values, thereby enhancing the accuracy of the wireless network coverage rate obtained by the coverage emulation method; or, setting coverage weight for various scenes in the network coverage evaluation area according to the importance of the scene to the wireless network coverage evaluation, determining the coverage weight corresponding to the grids according to the scenes to which the grids belong, and determining the wireless network coverage rate through combination with the coverage weight, thereby enhancing the accuracy of the wireless network coverage rate obtained by the coverage emulation method.

The coverage, connectivity and communication (C3) protocol method for wireless sensor networks is an integrated and energy-efficient protocol for Coverage, Connectivity and Communication (C3) in WSNs. The C3 protocol uses RSSI to divide the network into virtual rings, defines clusters with clusterheads more probably at alternating rings, defines dings, which are rings inside a cluster, uses triangular tessellation to identify redundant nodes, and communicates data to sink through clusterheads and gateways. The protocol strives for near-optimal deployment, load balancing, and energy-efficient communication. Simulation results show that the C3 protocol ensures partial coverage of more than 90% of the total deployment area, ensures 1-connected network, and facilitates energy-efficient communication, while expending only ¼th of the energy compared to other related protocols

Systems, methods, apparatuses, and computer program products for D2D synchronization in, for example, partial coverage scenarios are provided. One method includes sending, by a network node, information to at least one user equipment in a network. The information may be used by the at least one user equipment to determine whether the at least one user equipment is a full-coverage idle mode user equipment or a downlink-only idle mode user equipment. When, for instance at least one of a pair of device-to-device (D2D) user equipment is outside of the network coverage area, the method includes indicating via a cellular broadcasting message to the downlink-only idle mode and the full-coverage idle mode user equipment to send at least one synchronization signal. The method may then include configuring a RRC_Connected mode user equipment at cell-edge to monitor whether there are user equipment sending synchronization signals.

The invention discloses a two-dimension code and a forming method and system of the two-dimension code. The two-dimension code is obtained by sequentially superposing a pattern B extracted from a two-dimension code A, a pattern D extracted from identification C and the two-dimension code A or by sequentially superposing the pattern B extracted from the two-dimension code A, the pattern D extracted from the identification C and the two-dimension code A with the pattern B removed. The two-dimension code has large-area identification, and thus the identification is easier to read and the brand communication effect and product publicity effect are improved. Besides, because the area of the identification is large, the two-dimension code is more beautiful, and people will feel better for the two-dimension code. According to the forming method and system of the two-dimension code, by obtaining patterns formed by low-lightness colors in the two-dimension code and the identification, part of the identification can be covered with the two-dimension code, influence of the identification on the error rate of the two-dimension code is reduced, the area of the identification is increased, and thus the two-dimension code and the identification can be perfectly combined.

The invention discloses a 360-degree scanning detection laser radar device, which comprises a centrosymmetric optical-mechanical structure assembly, a laser ranging module and a 360-degree scanning drive module, wherein the optical-mechanical structure assembly further comprises a shafting structure and an optical window which surrounds the optical-mechanical structure assembly to realize overall or partial coverage; the laser ranging module comprises an emitting optical path, a receiving optical path, a laser emitting assembly and a laser signal receiving assembly, and the emitting optical path and the receiving optical path are designed by adopting a parallel optical path mode; and the 360-degree scanning drive module comprises a scanning mechanism and a scanning drive and control circuit, and a scanning shaft of the scanning mechanism is coaxial with the shafting structure and drives the laser ranging module to rotate around the shafting structure, thereby realizing 360-degree scanning detection. The 360-degree scanning detection laser radar device is highly integrated and small in size, and is suitable for applications of the laser radar in aspects of unmanned vehicles, robot navigation and obstacle avoidance and the like.

The invention discloses a coverage control method of a wireless sensor network, relating to the technical field of wireless sensor networks. The coverage control method comprises the steps of: 101, determining a hot spot region set according to a historical movement track of a to-be-monitored target; 102, configuring a static node in the determined hot spot region set, and randomly configuring a movable node; 103, after the target to be monitored enters a to-be-monitored region, predicting a region of the to-be-monitored target, possibly occurring in future; 104, detecting whether the predicted region is covered, if the predicted region is covered, ending, and if not, continuously executing the step 105; and 105, completely covering the predicted region by mobilizing the movable node. According to the invention, through predicting and regulating positions of the nodes, when no target passes through, the to-be-monitored region is partially covered, and the predicted region is effectively covered after the target occurs, thus the coverage degree of the to-be-monitored target is greatly improved, a topological structure is flexible and variable, and the network survival time is effectively prolonged.

The invention discloses a moving vehicle tracking method based on corner matching. The moving vehicle tracking method comprises the steps of extracting corners of a detected region through a Harris algorithm according to a video image captured by a surveillance camera with a fixed field of view, calculating scale-invariant rotation feature transform descriptors of corresponding corners, matching the corners according to the scale-invariant rotation feature transform descriptors to form a track, performing calculation to obtain information such as a speed and a direction of the track, dynamically grouping the track, and performing reasonable judgment on a result obtained by initial grouping to determine a vehicle. By means of the moving vehicle tracking method based on corner matching, tracking of the vehicle is completed by performing matching tracking on the track and grouping the track. The moving vehicle tracking method based on corner matching can deal with effect of illumination variation of scenes and partial coverage of the vehicle on vehicle detection and tracking well.

The invention is directed at a method of distributing system information to one or more mobile terminals in a cellular telecommunications network. The network comprises at least one signaling cell serving a first coverage area, and one or more data cells associated with said signaling cell, each one of said data cells serving a respective partial coverage area covering at least a part of the first coverage area. For each one of said data cells, the respective data cell is operated in either an active or inactive communication mode depending on whether there is at least one of said mobile terminals present in the partial coverage area of said respective data cell, and whether said at least one mobile terminal operates in an active terminal mode and is not served by other data cells.

The invention provides a three-dimensional integrated structure for Micro LEDs. The three-dimensional integrated structure comprises a Micro LED chip array, a first insulation passivation layer, a first metal wiring layer, a second insulation passivation layer and at least one driver chip, wherein the first surface of the Micro LED array is covered with the first insulation passivation layer, andholes are formed in the first insulation passivation layer so as to expose positive bonding pads and negative bonding pads of the Micro LEDs; the first metal wiring layer is arranged on the upper surface of an insulating layer, and is connected with the positive bonding pads or the negative bonding pads of the chips; the second insulation passivation layer is arranged on the upper surface of the first metal wiring layer and the upper surface of the first insulation passivation layer, partial coverage of the upper surface of the first metal wiring layer is realized, and an exposed area is takenas an external connector; the at least one driver chip is provided with two or more than two bonding pads which are interconnected with metal electrodes on the first metal wiring layer respectively;and the driver chips are positioned on the upper surface of the second insulation passivation layer. The packaging area is reduced obviously, and simultaneously the thickness of the integral Micro Ledintegrated module is reduced.

The invention belongs to the technical field of nondestructive detection of a steam turbine for a nuclear power station, particularly relates to an ultrasonic phased array detection method for fir type blade roots of a nuclear main turbine and aims to adopt an ultrasonic phased array detection technology to overcome the defects of small space between blades, complicated blade root structure, signal identification difficulty and the like of conventional ultrasonic detection in a state that blades of a low-pressure rotor of the nuclear main turbine are not dismounted. Four scanning modes are adopted for cross scanning to realize full-area coverage of first tooth roots of the blades and partial coverage of second and third tooth roots, and the defects are accurately quantified, so that the accident of breakage of the blade roots of the blades of the nuclear main turbine is prevented. The method is characterized by comprising steps of system calibration, detection starting and display judgment and quantification. The method has the advantages as follows: ultrasonic detection is carried out without dismounting and mounting of the blades, and the maintenance time is shortened; the four scanning modes are adopted for cross scanning and mutually complemented, and full-area coverage detection of the first tooth root parts of the fir type blade roots is realized; fan-shaped scanning and deep focusing can be realized.

A rule set is used to generate an indoor map of a building from partial map data. In one embodiment, the partial map data is based at least in part on crowd sourced trajectory data. In one embodiment, a probabilistic rule set describes relationships in space usage of the indoor building. Hypothesis testing is performed. A most likely complete layout is determined, based on the partial coverage data and the rule set, which preserves the partial map data.

In order to coat and/or partially extrusion-coat flexible, elongated products, such as electrical cables or wires, and also pipes, tubing or hoses, whose surface has a material-conditioned nonstick characteristic, such as polytetrafluoroethylene, the surface of the product is wholly or partially activated (structured) through a plasma treatment and then flowable materials are applied to the activated (structured) surface area under the influence of heat and/or pressure as a coating, with complete or partial coverage, or as a formed part.

Runs of loss cable are disposed in succession along a zone of radio coverage and coupled with feeder means from base stations of a cellular mobile communication network. The feeder means apply first radio frequency signals from a first base station to a first cable run and second radio frequency signals from a second base station to a second cable run, adjacent to the first run. They also apply at least part of the second radio frequency signals to the first cable run, preferably attenuated relative to the first radio frequency signals as applied to the first cable run, creating a zone of partial coverage between adjacent cells in order to facilitate operation of an automatic cell changeover during calls.

An image forming apparatus includes an image carrying member, a developing device, a cleaning unit and a processor. The developing device performs development with a developer containing a toner and a lubricant. The processor obtains information on a lubricant amount in the developing device; obtains, with respect to each section formed by dividing a surface of the image carrying member in a rotating shaft direction of the image carrying member, a partial coverage from electrostatic latent image writing information for a predetermined period about the section; sets, for the section having the partial coverage of a predetermined value or less, a developer supply amount for a patch to be formed outside an image forming region on the image carrying member, based on the above information; and causes the developing device to supply the set developer supply amount so that the patch is formed.

The invention relates to a part covering and distributing method of a sensor in a wireless sensor network in the communication technology field, which comprises the following specific steps: the first step: a model is induced by PTR in an induction area of the sensor in the wireless sensor network; the second step: a frame sensor aggregation is led to make the whole network in 2-communication; the third step: the wireless sensor network enters to a selection stage and a stabilization stage; the time sum of the selection stage and the stabilization stage is a cycle T; in the selection stage, a monitoring area is divided into N zonal areas which are separate and parallel with each other; N zonal sensor aggregations are selected and respectively cover on the N zonal areas; when the finish is selected in a cycle, the zonal sensor aggregations enter to the stabilization stage; in the stabilization stage, each zonal sensor aggregation randomly selects a beginning working time in a time period (0, Tx(1-gamma)) and returns back to a dormant state after working for gamma T periods of time; gamma is a duty ratio and more than 0 and less than or equal to 1. The invention prolongs the life-span of the wireless sensor network and improves the monitoring quality of the network.

A scintillation device with high resolution includes a detection unit (3) to convert into light radiation an ionising radiation originating from a source under examination and a collimator (2) made of a material with high atomic number 3nd including a plurality of grids (4), the grids (4) co-operating with each other in mutually sliding fashion in a transverse direction to the direction of detection (R) to provide a partial coverage of the detection unit (3) in such a way as to expand and reduce in an adjustable manner a surface area of the detection unit (3) offered to the radiation.

The present invention is a system for modifying the tonal output of a hand drum. The system includes the use of a tonal cover or membrane to change the sound emitted when the head of a hand drum is struck. Additional tuning pads are then added to further modify the sound of the drum. Tonal adjustment is affected by the number, thickness, material and tautness of the additional pads and tonal cover. A partial coverage of the drum head by a tonal cover may also be utilized.