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271 results about "Source element" patented technology

Source Element (Binding) (ASSL) Identifies the source of data to which the parent element is bound.

Method and apparatus for using barrier phases to limit packet disorder in a packet switching system

Methods and apparatus are disclosed for using barrier phases to limit the disorder of packets which may be used in a computer or communications system. In one packet switching system, source nodes include an indication of their current barrier state in sent packets. For each barrier state, a predetermined range of sequence numbers may be used or a predetermined number of packets may be sent by a source node. The source, destination, and switching nodes are systematically switched between barrier phases, which is typically performed continuously in response to the flow of barrier request and barrier acknowledgement packets or signals. Each source node broadcasts to all forward connected nodes a barrier request to change to a next barrier state. After a switching node has received a barrier request on all incoming links, the switching node propagates the barrier request. Upon receiving barrier requests over all links, each destination stage relays an acknowledgement message to all connected source elements, which then send a barrier acknowledgement in much the same way, and each source element changes its barrier state causing the sequence number or counting space to be reset, and newly sent packets to indicate the new barrier state. Upon receiving all its barrier acknowledgement messages, each destination stage changes its barrier state, and then the destination can manipulate (e.g., resequence, reassemble, send, place in an output queue, etc.) packets marked with the previous barrier state as it knows that every packet from the previous barrier state has been received. This transition of barrier phases and limiting the number of packets sent per barrier phases may be used to limit the range of the sequence number space and the size of outgoing, resequencing, and reassembling buffers, as well providing a packet time-out mechanism which may be especially useful when non-continuous sequence numbers or time-stamps are included in packets for resequencing and / or reassembly purposes.
Owner:CISCO TECH INC

Shared mesh signaling algorithm and apparatus

A shared mesh protection scheme defines an associated protection path when a working connection is established. During the protection path definition, the corresponding protection path information is sent down to a switch card of network elements making up the protection path. Upon detection of the failure, the network elements using an overhead byte message will inform the routing source network element of the connection of the failure in the working path. The overhead bytes used are interrupt driven bytes located in the line and path overhead of network traffic. The routing source node of the connection will then send the corresponding overhead byte messages down the protection path to provide for protection path establishment according to the preloaded data located at the switch card. It should be noted that each connection can have a source and termination element which relates to the source from where the corresponding connection was set-up rather than the direction of the payload transmission. Therefore, once the failure has occurred the source elements will send messages using overhead bytes to the corresponding network elements along the protection path. Accordingly, routing tables located at the switch card of the network elements, set-up when the working path connections were initially established, determine this dynamically allocated protection path environment.
Owner:CIENA

Field image tomography for magnetic resonance imaging

Field Image Tomography (FIT) is a fundamental new theory for determining the three-dimensional (3D) spatial density distribution of field emitting sources. The field can be the intensity of any type of field including (i) Radio Frequency (RF) waves in Magnetic Resonance Imaging (MRI), (ii) Gamma radiation in SPECT/PET, and (iii) gravitational field of earth, moon, etc. FIT exploits the property that field intensity decreases with increasing radial distance from the field source and the field intensity distribution measured in an extended 3D volume space can be used to determine the 3D spatial density distribution of the emitting source elements. A method and apparatus are disclosed for MRI of target objects based on FIT. Spinning atomic nuclei of a target object in a magnetic field are excited by beaming a suitable Radio Frequency (RF) pulse. These excited nuclei emit RF radiation while returning to their normal state. The intensity or amplitude distribution of the RF emission field g is measured in a 3D volume space that may extend substantially along the radial direction around the emission source. g is related to the 3D tomography f through a system matrix H that depends on the MRI apparatus, and noise n through the vector equation g=Hf+n. This equation is solved to obtain the tomographic image f of the target object by a method that reduces the effect of noise.
Owner:SUBBARAO MURALIDHARA

Field image tomography for magnetic resonance imaging

Field Image Tomography (FIT) is a fundamental new theory for determining the three-dimensional (3D) spatial density distribution of field emitting sources. The field can be the intensity of any type of field including (i) Radio Frequency (RF) waves in Magnetic Resonance Imaging (MRI), (ii) Gamma radiation in SPECT / PET, and (iii) gravitational field of earth, moon, etc. FIT exploits the property that field intensity decreases with increasing radial distance from the field source and the field intensity distribution measured in an extended 3D volume space can be used to determine the 3D spatial density distribution of the emitting source elements. A method and apparatus are disclosed for MRI of target objects based on FIT. Spinning atomic nuclei of a target object in a magnetic field are excited by beaming a suitable Radio Frequency (RF) pulse. These excited nuclei emit RF radiation while returning to their normal state. The intensity or amplitude distribution of the RF emission field g is measured in a 3D volume space that may extend substantially along the radial direction around the emission source. g is related to the 3D tomography f through a system matrix H that depends on the MRI apparatus, and noise n through the vector equation g=Hf+n. This equation is solved to obtain the tomographic image f of the target object by a method that reduces the effect of noise.
Owner:SUBBARAO MURALIDHARA

Method and device for mapping control channel sources

The invention discloses a method for mapping control channel sources. The method comprises the following steps: confirming the number of source element groups occupied by a physical control format indicator channel (PCFICH) and a physical hybrid automatic repeat request indicator channel (PHICH) and the total number of the source element groups supported by a system; confirming a number NREG of the source element groups occupied by a physical downlink control channel (PDCCH) according to the confirmed total number and the number of the source element groups occupied by the PCFICH and the PHICH; expanding a complex value 4-tuple sequence of the PDCCH according to the NREG to obtain an expanded 4-tuple sequence; mapping the expanded 4-tuple sequence into a matrix according to a first preset mode; permuting the columns of the matrix to obtain a permutation matrix; reading the permutation matrix in a second preset mode to obtain a new 4-tuple sequence; and mapping the new 4-tuple sequence to the source element groups by a time priority principle. The invention also discloses a device for mapping the control channel sources. The invention can reduce the mutual interference among the control channels and improve the diversity effect of an OFDM technology.
Owner:ZTE CORP

Lithium manganese cobalt nickle oxygen of manganese cobalt nickle triple lithium ionic cell positive material and its synthesizing method

The invention belongs to a manganese cobalt nickel three Yuan lithium ionization cell anode material, specifically relates to the lithium manganese cobalt nickel oxygen and its synthetic method. The high-capacity, the high safety performance of other battery positive electrode material is unable to compare with lithium manganese cobalt nickel oxygen, moreover low in price, the good compatibility with the electrolyte, the outstanding circulation performance, will certainly to thrust the market in the recent several years. The chemical formula of lithium manganese cobalt nickel oxygen is: The LiMn1/2Co1/4Ni1/4O2 crystal structure is a hexagonal system. The synthetic method of lithium manganese cobalt nickel oxygen is: (1) preparing the mix solution which is composed by the manganese salt, the cobalt blue, the nickel salt, under the agitation situation, joining the alloy salt brine, the complexing agent simultaneously in the reacting system according to the certain proportion distinction, simultaneously adjusts the join speed of alkali to maintain pH to be constant; After continuous feed certain times, filtrate and wash the precipitate to obtain the forerunner body. (2) Grinding and mixing lithium source element and forerunner body ball, after mixed evenly, compacting, roasting, and decomposing to obtain the lithium manganese cobalt nickel oxygen. Then cooling, grading, mixing to obtain the product.
Owner:湖南美特新材料科技有限公司
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