441 results about "Synchronizer" patented technology

A system, method and article of manufacture are provided for creating a synchronizer object in order to playback an event simultaneously on a plurality of a client apparatuses. First, a request is received utilizing a network for viewing an event. Next, the request is queued in memory. In response to the request, an object is created which is adapted to playback the event on a client apparatus simultaneous with the playback of the event on the remaining client apparatuses upon the receipt of an activation signal. The object is sent to one of the client apparatuses utilizing the network for being stored therein.

The invention discloses a burst direct sequence spread spectrum system and a pseudo code synchronization method of a burst direct sequence spread spectrum waveform thereof. By adoption of the burst direct sequence spread spectrum system disclosed by the invention, the capturing, tracking and convergence times of a burst direct sequence spread spectrum signal can be greatly shortened, and the frequency offset estimation precision is relatively high. The burst direct sequence spread spectrum system disclosed by the invention is realized by the following technical scheme: in a signal modulation system, a specific segment of lead data is added in front of user data after scrambling and channel encoding are carried out on the user data for accomplishing signal capture and synchronization; and in a signal demodulation system, pseudo code phase capture and carrier frequency offset capture are carried out on a digital baseband signal to accomplish signal capture, coarse pseudo code phase synchronization and coarse frequency offset compensation with a coarse synchronizer, precise signal synchronization of a coarse synchronization signal is separately accomplished by pseudo code phase and carrier phase synchronization loops, identification information and a starting position of a user data segment are determined from a precise synchronization signal by a frame synchronizer, and the user data are restored by channel decoding and descrambling.

A time synchronization apparatus, method and system are provided. In one aspect, the apparatus comprises at least a time of day clock, a first port operable to receive at least first time information using a first time protocol, a second port operable to receive at least second time information using a second time protocol, a third port operable to receive at least a timing signal, and a time stamp register operable to at least capture current value of the time of day clock upon receipt of the timing signal from the third port or the first time information from the first port or combination thereof

A computer method and system synchronizes one streaming data signal with another data signal. A subject data signal and working data signal are received. The working data signal has predefined coordinates in a coordinate system (e.g., time origin and unit sampling rate in a time coordinate system for audio). The subject data signal and working data signal are transformed into respective common representations. An alignment process aligns the respective transformed representations by matching the transformed representation of the working data signal to that of the subject signal. A re-synchronizer element transposes the predefined coordinates of the working data signal onto the subject signal in the aligned state of the respective transformed representations. As such, the subject data signal is synchronized to the coordinate system of the working data signal.

The invention discloses a time synchronizer applied to protective test equipment of a power system. The time synchronizer is characterized in that the time synchronizer is provided with a wireless control host machine with a master clock time synchronization hardware module, wherein the wireless control host machine is directly connected with a software simulation platform of an upper computer, and a slave clock time synchronization hardware module is arranged in a protective test terminal. Time synchronization between the master and slave clock time synchronization hardware modules is implemented through a wireless communication application IEEE (Institute of Electrical and Electronic Engineers) 1588 time synchronization protocol. According to the technology provided by the invention, the wireless IEEE1588 time synchronization protocol is applied to a secondary side test protective device of a transformer substation of the power system, so that a network signal of a mutual inductor obtained by simulation is synchronously output in real time, in this way, a signal network output of the power system can be stimulated more authentically so as to test a plurality of secondary side test protective devices of the transformer substation at the same time.

An inventive electronic circuit includes central processing means having a clock connection and a data connection, as well as a peripheral unit having a clock connection and a data connection, the clock connection of the peripheral unit being connected to a signal output of a controllable oscillator or to an external clock input. Synchronization means having a first and a second data connection is connected, the first data connection being connected to the data connection of the peripheral unit. In addition a data bus connects the data connection of the CPU and the second data connection of the synchronization means. The clocking of the peripheral unit asynchronous to the central processing unit yields a more effective operation being better adjustable to certain parameters, such as, for example, the application and the energy of the electronic circuit available.

The invention discloses an arbitration device for a double computer redundancy hot backup computer. The arbitration device for the double computer redundancy hot backup computer comprises an arbitration controller (7), a state control monitor (5) and a network switcher (8), and further comprises a milestone information synchronizer (6), an IO switching module (10), an RS422 switching module (11), a KVM switching controller (9), a work host computer dual port RAM interface (3) and a backup host computer dual port RAM interface. In the initial phase of booting the double computer redundancy hot backup computer, the arbitration device firstly confirms a host computer on duty between a work host computer and a backup host computer, and secondly performs booting synchronization. In the running process after booting the double computer redundancy hot backup computer, the arbitration device firstly performs task synchronization and data synchronization on the work host computer and the backup host computer, and secondly performs switching operation so as to obtain a work shift between the work host computer and the backup host computer. The arbitration device for the double computer redundancy hot backup computer meets the requirements of a display and control platform of a modern naval ship auxiliary device for manipulation ability and timeliness of the double computer redundancy hot backup computer.

A skew-tolerant, glitch-free reset distribution apparatus and method are provided in an intellectual property (IP) block that supports a multi-channel input/output protocol. During reset mode, synchronizers are used to create more predictable timing, to pipeline the propagation delay, and to tolerate RC-induced skews of up to a clock period in routing a reset signal to all the channels and within the channels in an IP block. Two control signals, which are available from programmable logic resource core circuitry, are used to control the input of the reset signal into the IP block. Because the control signals are designed to be glitch-free, the reset signal is therefore also glitch-free, thus preventing the IP block from inadvertently transitioning into or out of reset mode.

The invention discloses a device and a method for synchronizing system frequency in a packet transport network, and relates to a packet transport network in optical communication. The system frequency synchronizing device comprises a microcomputer processor, a field programmable gate array (FPGA) processing module, a clock integrated circuit, a packet transport network service disk, a synchronous state byte extracting module, a synchronous state byte generating module, a phase locked loop circuit, an external clock input circuit, a high stable crystal oscillator, a clock distributing circuit, a HDB3 coding module and an external clock output circuit, wherein the FPGA processing module comprises a preceding stage preselector, a priority level control module, a first selector, a second selector and a third selector. By the device and method, the system frequency in the whole packet transport network can be synchronized rapidly, data business package transmission and smooth transition can be carried out rapidly and hierarchically, and the device is flexible and has high reliability.

The invention discloses a time-keeping method of a time synchronization device. The method comprises the following steps: A, receiving a first pulse per second signal; B, acquiring output signal frequency doubled by a constant-temperature crystal oscillator so as to obtain internal working frequency; C, taking the first pulse per second signal as a base, and adopting a PID (Proportion Integration Differentiation) algorithm to adjust the internal working frequency; and D, generating a second pulse per second signal synchronous to the first pulse per second signal according to the adjusted internal working frequency. According to the time-keeping method of the time synchronization device, the PID algorithm is introduced, a PID strategy is applied to adjust the internal working frequency, the second pulse per second signal is generated according to the adjusted internal working frequency and has the advantages of good stability and high synchronism, the implementation procedure of the second pulse per second signal is simple, and high-accurate time keeping can be implemented with lower cost. The invention relates to the time-keeping method of the time synchronization device, which can be widely applied to the technical field of communication.

The invention discloses a synchronizer gear ring inner ring machining composite clamp which comprises a hollow chuck. A chuck pull rod linkage mechanism is arranged in the hollow chuck. The linkage mechanism drives workpiece pull rods in the hollow chuck. Rotary clamp grooves are formed in the workpiece pull rods and achieve autoroatation under the action of limiting pins so as to drive workpiece press plates on the workpiece pull rods to rotate to fix and loosen a workpiece. A workpiece inner cone top disc and a centre matched with the hollow chuck are designed on a machine tool tailstock to carry out inner ring axial and radial locating of the workpiece. According to the clamp, synchronizer gear ring inner ring clamping machining forming can be achieved at a time; on the premise of guaranteeing the requirements of synchronizer gear ring inner ring inner face and outer face coaxiality, roundness, bounce machining and the like, automatic mechanical arm feeding is facilitated, and meanwhile precise machining of synchronizer gear ring inner rings is achieved; the problem about side connection between procedures is avoided; the machining efficiency is high; the middle work-in-process inventory is cancelled; orders are easy to track; the transfer time is short; and the existing one-piece flow development tendency is met.

A system and a method for deriving transmitted signals from multiple users for an OFDM-CDMA communication system are described herein. An optimum synchronizer for use in an OFDM-CDMA system is also provided. In one aspect, the system and method incorporate a programmable structure for different OFDM-CDMA systems (e.g., MC-CDMA, MC-DS-CDMA, and MT-CDMA) that can be efficiently implemented. The programmable structure is based on the linear minimum mean square error (LMMSE) or best linear unbiased estimator (BLUE) techniques. In addition, an efficient algorithm for reducing computations of fast Fourier transform (FFT) is presented.

The invention belongs to the technical field of time frequency, and discloses a dynamic high-precision time synchronization device and a synchronization method thereof. The time synchronization devicecomprises a time difference real-time measurement module, a time difference calculation module, a time frequency regulation and control module, a frequency distribution module, a pulse distribution module and a control module. The time difference real-time measurement module accurately measures the time difference between the local time and the reference time in real time; the time difference calculation module realizes precise time tracing of the navigation system through a real-time time difference calculation technology; the core control module is used for calculating time difference datain real time according to the real-time measurement time difference and obtaining a time error and a frequency deviation of the time synchronization device; the time-frequency regulation and control module is used for precisely regulating the phase of a time signal and the frequency of a frequency signal output by the time synchronization device to realize real-time dynamic time synchronization, and finally, the frequency distribution module and the pulse distribution module are used for providing a high-precision time signal pulse per second and a high-precision frequency signal for externalequipment.

The present invention relates to a method and a device for time synchronization of an RBS which has lost its GPS signal. The method in the time synchronization device comprises retrieving from the first radio base station a first timing advance value (710) used by the user equipment to adjust its transmission timing before the handover, and a measurement of a reception timing (720) of a random access preamble. The random access preamble is transmitted from the user equipment to the second radio base station during synchronization. The method also comprises retrieving (730) from the second radio base station a second timing advance value used by the user equipment to adjust its transmission timing after the handover, and determining (740) a time synchronization offset between the first and second radio base station based on the retrieved first timing advance value, the second timing advance value, and the measurement of the reception timing.

An actuation system for concurrently actuating a first mechanism and a second mechanism from a first state to a second state includes an actuator and a sliding member operatively engaged with the actuator and movable from a first position to a second position in response to actuation of the actuator. A connecting member has a relaxed state and a taut state. The connecting member includes a first end coupled to the first mechanism, a second end coupled to the second mechanism, and a medial portion cooperative with the sliding member. Movement of the sliding member from the first position to the second position changes the connecting member from the relaxed state to the taut state, whereby the tension is increased in the connecting member.

A synchronized controlled oscillation modulator (SCOM), comprising at least one, Controlled Oscillation Modulator (5), and synchronizing means (1, 6) connected to said COM modulator. The modulator can comprise several COM modulators, and the synchronizing means can be arranged between the COM systems, so that the oscillation modulator signal is used as synchronization signal. The invention provides significant advantages in performance, topological simplification, improved robustness, stability and efficiency compared to prior art.

The invention relates to a synchronizer ring (20) for a synchronization unit (10) of a gearbox (12), with a locking ring (34) having an annular axis (A) and a locking toothing (32) and a coaxial with the lock ring (34) disposed separate cone ring (36) having a first conical surface (38) having a first cone angle ([alpha]) and a radially opposite second conical surface (40) with a second cone angle ([beta]), wherein the first cone surface (38) in the installed state of the synchronizer ring (20) to a gangradseitigen friction cone (24) of the synchronization unit (10) and the second conical surface (40) at a conical counter surface (42) of the locking ring (34) abuts, wherein the locking ring (34) and the cone ring (36) mutually associated abutment surfaces (44, 46) which couple the locking ring (34) and the cone ring (36) in the circumferential direction (48) , and wherein the stop surfaces (44, 46) of the locking ring (34) and / or of the cone ring (36) relative to the ring axis (A) are at least partially inclined such that the second conical surface (40) and the conical counter surface (42) at a acting between the locking ring (34) and the cone ring (36) are torque loaded axially away from one another.

The invention relates to the technical field of computer vision, and discloses a data synchronization method, a data synchronization system, a device, a medium and a system thereof. The data synchronization method comprises the steps of obtaining source feature data; segmenting the source feature data to obtain a plurality of fragmented data, and storing the plurality of fragmented data in a plurality of distributed data nodes of a distributed storage system in a one-to-one correspondence manner; establishing a plurality of replica sets in one-to-one correspondence with the plurality of distributed data nodes, each replica set comprising a master node and at least one slave node, the master node and the slave nodes being used for backing up fragmented data stored in the distributed data nodes corresponding to the replica sets to which the master node and the slave nodes belong to obtain master backup data and slave backup data; segmenting the main backup data in the main node of the atleast one replica set to obtain a plurality of sub-fragmented data; and establishing a plurality of synchronizers in one-to-one correspondence with the sub-fragment data in at least one slave node, and synchronizing the corresponding data in the slave backup through the synchronizers.

The invention provides a real-time communication system for realizing cooperative work in message conversion processing course. The real-time communication system includes: at least one instance message client port monitors received task message and/or operation message, responds task message execution and task corresponding to task message, and responds operation message for executing operation corresponding to operation message; a client port database stores first history data, and connects with server database and instance message client port according with data synchronization device; a database synchronization device is connected between client port database and server database, and realizes synchronization with first history data and second history data stored in server database; a server database stores second history data and identifying message corresponding to instance message client port; an instance message server sends operation message to instance message client port corresponding to identifying message according with identifying message. The real-time communication system realizes real-time message exchange in message conversion processing (for example translation) course.

A synchronizer device for a manual transmission, having a shaft and a selector gear that is mounted on the shaft. The synchronizer device includes a hub, which can be connected to the shaft in a rotationally locked fashion, a slider sleeve, which is supported on the hub in a rotationally locked fashion, and can be slid in the axial direction, a locking element that is designed to limit the slidability of the slider sleeve in a locked position, a friction package, which has an outer synchro ring, an inner synchro ring, and an intermediate ring, which is positioned between the outer synchro ring and the inner synchro ring, with the outer synchro ring and inner synchro ring being able to rotate relative to each other, and a servo unit having a first servo surface on a first component and having a second servo surface on a second component, which rests against the first servo surface, and a torque between the first component and second component causes the first servo surface to slide along relative to the second servo surface, which produces an axially acting servo force on the friction package. According to this invention, the servo force is introduced into the friction package by the outer synchro ring and the outer synchro ring is able to rotate relative to the locking element.