491results about How to "Accurate synchronization" patented technology

A gaming machine for conducting a wagering game includes a sound system for presenting audio directly related to the game or indirectly related as background sound or music. The audio files contain markers that initiate other events and are instrumental in synchronizing the audio to the events.

A multimedia playing apparatus plays hypermedia titles each consisting of a plurality of monomedia objects including at least one finite time monomedia object such as a video object, which is formatted as a sequence of fixed-length playing sections such as video frames and functions as a base-axis object for providing a timing reference. The apparatus executes playing of a hypermedia title in accordance with processing time points specified as respective numbers of the playing sections, and stores and utilizes a plurality of sets of synchronization trigger data each of which designates that playing of a specific monomedia object other than the base-axis object is to be started, or is to be ended, at a specific processing time point, with the synchronization trigger data sets being successively accessed and used as the corresponding processing time points are respectively reached during playing of the hypermedia title.

A method and apparatus for conveying data over a packet-switching network (26). Data are received from a peripheral device (25) for transmission via the network to a memory (22) associated with a central processing unit (CPU) (21), followed by an interrupt signal from the peripheral device associated with the data. One or more data packets containing the data are sent over the network to a host network interface (32) serving the memory and the CPU, followed by an interrupt packet sent over the network to the host network interface. Responsive to the interrupt packet, an interrupt input of the CPU is asserted only after the one or more data packets have arrived at the host network interface.

A system and method monitor a hydrocarbon reservoir for drainage in volumetric three dimensions. Monitoring between wells is imperative for optimum reservoir management and is achieved by mapping the hydrocarbon fluid pathways in a producing reservoir. Unlike conventional 4D or time-lapse reflection seismic imaging systems that use a controlled active seismic source and records reflected seismic energy at receivers, the system and method exploit the minute vibrations, or micro-earthquakes generated in the reservoir layers that are induced by fluid movement. These microseisms are detected as the fluids move in the reservoir.

A method for testing of a communication network, using a plurality of traffic agents coupled to communicate via the network. The method includes transmitting a sequence of data packets via the network from a first one of the traffic agents to a second one of the traffic agents and recording arrival characteristics of the packets in the sequence, responsive to receiving the packets at the second traffic agent. The arrival characteristics of different packets in the sequence are compared so as to determine a measure of variability in transmission of the packets via the network.

Systems and methods which provide an adjustable tine clamp configuration are shown. Embodiments provide an adjustable support member configuration which is adapted to maintain a desired geometry of tines throughout an adjustable range. The adjustable support members are preferably adjustable to provide selectable clamping widths, such as to accommodate manipulation of goods of different sizes and shapes. Embodiments utilize parallel links coupled to pivoting tine supports to maintain proper tine geometry throughout the full range of adjustment. Such parallel links are further preferably utilized to actuate associated tines in operation of the adjustable tine clamp. Embodiments further implement a short stroke actuator configuration to facilitate very rapid production cycles.

A modem, or a communication system, in its transmission section, has signal-formatting circuitry followed by circuitry for insertion of a sequence of pilot symbols into a sequence of data symbols outputted by the formatting circuitry. Placement of the insertion circuitry after the formatting circuitry permits a variety of formatting options without effecting the sequence of pilot symbols that serves as a time reference useful in detection of a signal transmitted by the modem. The reception section of the modem is equipped correspondingly to process a received composite signal of data symbols having a prescribed format and a sequence of pilot symbols. The reception section extracts the sequence of pilot symbols from the composite signal, and employs the pilot symbols to develop a time base for operation of circuitry for decoding the format of the received composite signal to extract data from the composite signal.

A frequency and symbol timing synchronization apparatus for orthogonal frequency division multiplexed (OFDM) signals, and a method performed by the apparatus are provided. This apparatus includes an autocorrelation unit, a comparator, a peak flat detector, a frequency offset estimator, a frequency offset compensation unit, a cross correlation unit and a symbol timing synchronization unit. The autocorrelation unit receives data including a synchronizing symbol made up of at least three identical synchronizing signals, delays the received data by a predetermined delay amount, performs autocorrelation between the received data and the delayed data, normalizes an autocorrelated value, and outputs a normalized autocorrelated value. The comparator compares the normalized autocorrelated value with a predetermined threshold value. The peak flat detector detects as a flat section a section where the normalized autocorrelated value is equal to or greater than the threshold value. The frequency offset estimator estimates a frequency offset within the flat section to obtain a frequency offset value. The frequency offset compensation unit compensates for the frequency offset of a received signal using the frequency offset value. The cross correlation unit performs cross correlation using a frequency offset-compensated signal and a reference signal, and normalizes the cross-correlated value to output a normalized cross-correlated value. The symbol timing synchronization unit detects a point where the cross-correlated value is maximum, and performs symbol timing estimation, thereby performing symbol timing synchronization. In the symbol timing and frequency synchronization apparatus and method, accurate frequency synchronization can be achieved because a large sample error can be allowed. Also, a symbol timing error can be reduced since symbol timing synchronization is achieved using a frequency offset-compensated signal.

The invention discloses a high-precision synchronous multi-channel image acquisition system and a method thereof. The system comprises a time source, a plurality of video acquisition units and a plurality of cameras. The method comprises six steps. According to the high-precision synchronous multi-channel image acquisition system and the method, synchronous time signal synchronization camera shooting is adopted for trigger signals, strict synchronization of shooting moments (exposure moments) of multi-channel cameras is achieved, the shooting moments are strictly synchronous with time of a time source, and the requirement for high-precision multi-channel synchronous image acquisition is met; timestamp information of trigger pulses is recorded, so that timestamps marked by images are the shooting moments, the timestamp marking precision is improved, follow-up information extraction and measurement analysis of multi-channel images are facilitated, and the good economic and social benefits are obtained.

A real-time simultaneous measurement apparatus includes: a hemoglobin information-receiving portion that sequentially receives hemoglobin information, which is information relating to the amount of hemoglobin in a head portion of a test subject, from a NIRS brain-measuring apparatus that receives a synchronization signal output by a synchronization signal output apparatus and acquires the hemoglobin information when the synchronization signal has been received; a brain wave information-receiving portion that sequentially receives the brain wave information of the test subject, from an EEG brain wave-measuring apparatus that receives a synchronization signal output by the synchronization signal output apparatus and acquires the brain wave information when the synchronization signal has been received; a synchronization processing portion that performs processing that synchronizes the hemoglobin information and the brain wave information; and an output portion that outputs the synchronized hemoglobin information and brain wave information.

An interface circuit includes: a first synchronizing circuit for synchronizing a signal having a delay equal to or more than a predetermined period with respect to a reference clock, with the reference clock; a second synchronizing circuit for synchronizing a signal having a delay less than the predetermined period with respect to the reference clock, with the reference clock; a delay determining circuit for outputting a determination signal based on a delay of the signal relative to the reference clock; a delay determination setting circuit for outputting a path setting signal that designates an output value of one of the first synchronizing circuit and the second synchronizing circuit based on a preset value; and a delay selecting circuit for selecting and outputting an output value of one of the first synchronizing circuit and the second synchronizing circuit based on one of the determination signal and the path setting signal.

The present invention generates 3D moving images representing various aspects of a musical performance that can be synchronized, as necessary, to the changing tempo of a live or recorded performance, either automatically, or with live-controlled user input, and either with or without a score.

The invention provides a multi-node synchronous sampling control and data transmission method, the steps are as follows:(1) an overall synchronizer that matches with the upper layer data processing equipment and the process variable acquisition control equipment (DAE) is constructed, the equipment produces an overall synchronous signal S1 by utilizing an outer sync source or a local timer; (2) the overall synchronous signal is accessed to one or more data communication equipment (DCE), which produce a synchronous signal S2 for each accessed process variable acquisition control equipment; (3) the absolute time scale in the signal S1 and the overall sampling counter are utilized to realize the secondary synchronous sampling on the process variable among the data communication equipment; (4) the acquisition control equipment (DAE) for acquiring and outputting the process variable detects the synchronous signal and order data after receiving the signal S2; (5) the acquisition control equipment dynamically adjusts the start time of the S2 signal according to Delta ti and realizes the long-distance multinode synchronous sampling.

A system, method and device are provided for obtaining, from each endpoint device, meter reading data where the meter reading data are recorded and managed based on a relative time clock in each endpoint device. The relative time clock may be a simple inexpensive clock that tracks minutes and triggers recording of meter reading data for a particular hour at the end of that hour. In that embodiment, a collection system sends an endpoint device a request that includes a requested time that is converted into a relative time so that the endpoint device can understand the request. Since each recorded interval is generated based on a relative time maintained by the clock in the endpoint device rather than an absolute (real) time, the endpoint device does not need to maintain accurate date/time or to read meter reading data from the utility meter based on a real date/time.

According to the invention, a time synchronization of phase between measurement devices that do not share a same clock for their respective sampling of the signals is carried out by a time tagging of samples of the signals in time blocks followed by an adjustment of the phase values of components of interest of the signals in the regrouped time blocks so that the values refer to common time references between the measurement devices. The tagging is carried out with a synchronization signal available to the measurement devices, completed with count values provided by a counter operated by a reference clock for each measurement device.

A controller for a brushless motor that includes a processor, a first timer, a second timer, a compare register, a comparator, an input, and one or more outputs. The processor starts the first timer in response to a signal at the input. The first timer then generates an interrupt after a first period. In response to the interrupt, the processor generates a first control signal at the outputs. The processor also loads the compare register and starts the second timer in response to either the input signal or the interrupt. The comparator then generates a second control signal at the outputs when the second timer and the compare register correspond. Additionally, a motor system that includes the controller.

The invention concerns a method for synchronizing clocks of a set of nodes in a TDMA (“Time Division Multiple Access”) communication network comprising a plurality of nodes, among which some called time reference (TR) nodes are synchronized to a common time reference through a predetermined out-of-band synchronization mechanism, other nodes being called non-TR nodes, each node comprising an internal clock, characterized in that it comprises the steps of:

The invention also concerns a communication device in a TDMA communication network.

A method and apparatus for synchronizing digital and analog/mixed signal modules in a test site of an open architecture test system is disclosed. Event triggers from digital modules are routed to an ASYNC module, which selectively distributes them to analog/mixed signal modules. When an event occurs, the trigger may activate an analog/mixed signal module to perform a certain operation. The ASYNC module may also receive triggers from the analog/mixed signal modules and selectively distribute them back to the digital modules or analog/mixed signal modules. The digital modules can be programmed to wait for an analog/mixed signal module to complete an operation, as indicated by a trigger received from that analog/mixed signal module, before continuing. Because embodiments of the present invention enable synchronization of digital and analog/mixed signal modules under pattern control, synchronization can be very precise and repeatable as compared to synchronization from a site controller.

The invention discloses an audio and video subtitle generation method and apparatus. The method comprises the following steps: receiving voice data with subtitles to be generated and text data; according to the rhythm of speakers, segmenting the vice data to obtain each voice data segment according with habits of the speakers; according to the voice data segments, segmenting the text data to obtain text data segments corresponding to the voice data segments; and according to time information of each voice data segment, obtaining starting time and finishing time of the text data segments corresponding to the voice data segments. According to the invention, the text data can be displayed synchronously with the voice data in a simple and efficient mode, and the generated subtitles are more complete.