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133results about How to "Less data" patented technology

Cooperative TCP / BGP window management for stateful switchover

A system and method for performing stateful switchover with reduced data, such as only metadata about a TCP window state. The metadata comprises a size of TCP packets used to send BGP messages, and which of those have been acknowledged by a neighbor networking device. The networking device comprises a BGP module to establish a BGP session between the networking device and a neighbor networking device. An active transport module within the networking device synchronizes with a standby transport module within the networking device by sending the metadata. A fault detector within the networking device initiates a stateful switchover from the active transport module to the standby transport module responsive to detecting a failure of a process and / or processor. The standby transport module uses the metadata to determine stateful metadata for preserving current BGP and TCP sessions of the networking device with dummy TCP packets having the same size ad sent TCP packets and containing safe BGP message data.
Owner:CISCO TECH INC

Data indexing using bit vectors

InactiveUS6879976B1Reduce repeated overheadEliminate performanceDigital data information retrievalData processing applicationsInformation retrievalData records
The present invention provides for indexing of occurrences of a value in at least one data record using a bit vector wherein a bit vector is associated with the value and a bit of the bit vector representation is associated with the at least one data record, a determination is made whether the value exists in the at least one data record, a bit value is assigned to the bit in the bit vector representation based on the outcome of the determination. Further, operations may be performed on multiple bit vectors indexing data records and values used in the data records to determine the existence of combinations and associations between the corresponding values and the indexed data records.
Owner:SAP AG

System and method for approximating parametric curves using optimal number of segments

A system and method for approximating parametric curves may subdivide curves using a minimum number of subdivisions while meeting a given error tolerance. The method may include determining a subdivision point such that the maximum chord error on one side of the point is equal to the maximum chord error on the other side of the point, the chord error being the distance between the curve and a linear approximation thereof. These techniques may be applied recursively to sub-portions defined by the subdivision point if the maximum error is greater than a pre-determined error tolerance. The pre-determined error tolerance may be a default tolerance, or may be application-specific or user-configurable, in various embodiments. By subdividing a curve into fewer segments than conventional methods, the system and methods described herein may allow an alternate representation of the curve to be generated that includes less data than one generated using conventional methods.
Owner:ADOBE INC
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