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32results about How to "The synchronization process is simple" patented technology

Data transmitter and receiver of a spread spectrum communication system using a pilot channel

An improved spread spectrum communication system includes a transmitter and a receiver utilizing a pilot channel for the transmission of pure rather than modulated PN codes for code acquisition or tracking purposes with a lower bit error rate. The pilot signal is used to obtain initial system synchronization and phase tracking of the transmitted spread spectrum signal. At the transmitter side, a Walsh code generator, a Walsh modulator, a first PN code generator, a first band spreader, a second band spreader, finite impulse response filters, digital-analog converters, low-pass filters, an intermediate frequency mixer, a carrier mixer, a band-pass filter are used to transmit a spread spectrum signal. At the receiver side, a corresponding band-pass filter, a carrier mixer, an intermediate-frequency mixer, low-pass filters, analog-digital converters, a second PN code generator, an I channel despreader, a Q channel despreader, a PN code synchronization controller, a Walsh code generator, a first Walsh demodulator, a second Walsh demodulator, accumulator & dump circuits, a combiner, and a data decider are used to demodulate a received spread spectrum signal
Owner:SAMSUNG ELECTRONICS CO LTD

Synchronous frame capturing method and synchronous frame capturing device

ActiveCN104125053ASimplify the synchronization processShorten the timeSynchronising arrangementDislocationComputer science
The invention relates to the technical field of communication, in particular to a synchronous frame capturing method and a synchronous frame capturing device. The synchronous frame capturing method includes: starting from the first codon, separating a preset amount of codons into a plurality of assumed single frames by a preset single-frame codon length; sequentially extracting the codons at the ith bit from the assumed single frames, wherein the i is not smaller than zero and not larger than the value obtained by subtracting one from the single-frame codon length; ranking the extracted codons according to a sequential extraction order so as to obtain assumed synchronous frames; comparing the assumed synchronous frames with a target sequence in a step-by-step dislocation manner; if one section of continuous codon fields in the assumed synchronous frames is identical to the target sequence, determining the current ith bit as a synchronization bit for the single frames, determining the continuous codon fields as codons of a synchronous sequence of the synchronous frames, and determining the first one of the single frames and the starting frame of multiframes according to the first one in the continuous codon fields. The synchronous frame capturing method and the synchronous frame capturing device have the advantages that synchronization of the multiframes is finished in one step, a process for synchronization of the multiframes is simplified, and the time for synchronization of the multiframes is shortened.
Owner:深圳新视光电科技有限公司

Data stream type synchronization system, device and method

A data stream type synchronization system comprises a synchronization configuration unit, a message reading unit, a data processing unit and a data storage unit. The synchronization configuration unit is configured to maintain incremental subscription information of a target system, and determine whether to start increment synchronization of a related table, a field range needing synchronization, synchronization table information written by a target end and audit table information selected by the target end according to subscription configuration; the message reading unit is configured to perform format check and exception handling on incremental messages; the data processing unit is configured to perform parsing and processing of a message structure; and the data storage unit is configured to execute filtering and grouping of the incremental messages, matching and sorting of message major keys, insertion of the incremental data, submission and rollback of database transactions and exception capture and throwing, wherein all units of the data stream type synchronization system form a star topology structure, and data synchronization association between the upstream and downstream systems is decoupled based on the message queue middleware.
Owner:北京新致君阳信息技术有限公司

Method and system for fast synchronization of entries

The invention discloses a method and system for fast synchronization of table items. The method for fast synchronization of table items includes: first step, the user sends the table item to the CPU of the main control board; second step, the CPU of the main control board passes through the The out-of-band channel between the boards sends the entry to the service board CPU; the third step, the main control board CPU sends the table item to the service board NP processor through the inter-board in-band channel; the fourth step, the service board CPU passes the inter-board The out-of-band channel asynchronously receives entries to the local database of the service board, and at the same time, the NP processor of the service board synchronously receives the entries through the off-board channel. The present invention introduces the mode of asynchronously receiving entries by the CPU of the service board, so that the CPU of the service board releases the current receiving and processing task in a shorter time to perform the next receiving and processing. In addition, after receiving the table items, they only need to be synchronized to the database of the board, and do not need to be sent to the NP processor of the board through the PCIe channel on the board, which simplifies the processing process and releases more CPU resources.
Owner:NAT COMP NETWORK & INFORMATION SECURITY MANAGEMENT CENT +1

Synchronous frame capture method and device

The invention relates to the technical field of communication, in particular to a synchronous frame capturing method and a synchronous frame capturing device. The synchronous frame capturing method includes: starting from the first codon, separating a preset amount of codons into a plurality of assumed single frames by a preset single-frame codon length; sequentially extracting the codons at the ith bit from the assumed single frames, wherein the i is not smaller than zero and not larger than the value obtained by subtracting one from the single-frame codon length; ranking the extracted codons according to a sequential extraction order so as to obtain assumed synchronous frames; comparing the assumed synchronous frames with a target sequence in a step-by-step dislocation manner; if one section of continuous codon fields in the assumed synchronous frames is identical to the target sequence, determining the current ith bit as a synchronization bit for the single frames, determining the continuous codon fields as codons of a synchronous sequence of the synchronous frames, and determining the first one of the single frames and the starting frame of multiframes according to the first one in the continuous codon fields. The synchronous frame capturing method and the synchronous frame capturing device have the advantages that synchronization of the multiframes is finished in one step, a process for synchronization of the multiframes is simplified, and the time for synchronization of the multiframes is shortened.
Owner:深圳新视光电科技有限公司
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