47results about How to "High synchronization" patented technology

A protocol, method, and apparatus for managing network communications which are particularly well suited for ATM communications across a wireless medium. Contiguous time slots within a frame are allocated to each node having traffic to send. Each node is assured a nominal bandwidth, and excess bandwidth is distributed by demand. The allocation of excess bandwidth can be dependent upon the size of the buffer at each node, as well as the time-criticality of each message. Nodes communicate their requests for allocation by appending such control information to the first of their transmitted packets. The allocation, of each node's transmit and receive time slots, is transmitted to all the nodes at the beginning of each frame. Thereafter, each node need not participate on the network until their allocated time periods, thereby allowing portable devices to enter inactive states to conserve power. The network is operated in a connection mode; connections are established in a relatively non-interfering manner by the use of periodically occurring beacons. Inactive, unconnected, nodes need only monitor the network during these beacon periods, further allowing for power conservation.

A method and apparatus are provided to achieve frequency synchronization between a first clock at a first node and a second clock at a second node of a packet-carrying communications network. At the first node: a property of packet transmission through the network between the first node and the second node is measured; and the measurement of the property is sent to the second node. At the second node, the same property of packet transmission through the network between the first node and the second node is measured. The measurement of the property made at the first node and the measurement of the property made at the second node are used to synchronize the frequency of the second clock with respect to the first clock.

A high accuracy clock synchronization mechanism between a sender and a receiver in a communication network achieves time synchronization using broadcast beacons, directly at the PHY/MAC layer of the sender and the receiver, to minimize synchronization delay jitter. This provides a more efficient synchronization method than either NTP or SNTP, because multiple handshaking information exchange is avoided. Further, using beacons avoids the overhead of introducing additional synchronization packets in higher layer synchronization.

A portable communications module (600) of FIG. 6 has an input (621) coupled to receive an incident signal. The input (621) split out a first audio channel containing a context audio track from the incident signal and directs the first audio channel along a first audio output path for selective audio output from a speaker (634, 620) either internally within or external to the module. The input (621)also directs a second audio channel in the incident signal to an RF audio transmitter chain for broadcast, the second audio channel comprising a composite audio signal from a plurality of audio tracks, each audio track embedded with a unique activation code that is present for substantially an entire duration of audio activity in each audio segment of each track. The input (621) is further arranged to apply a tone encoded signal in the incident signal to at least a tone decoder (640) in a data transmitter chain distinct from the audio transmitter chain (642). A microcontroller (650), responsive to recovered data, is arranged to translate the recovered data into a control signal related to functional control of remote equipment (102). And a data transmit chain (660) operates to modulate the control signal onto a carrier for broadcast to the remote equipment to effect its operational control. The tone encoded data is effectively filtered within the portable communications module to an extent that it is not amplified within the first audio output path and is not processed by the RF audio transmitter chain.

A very extensive decoupling of the handle from vibrations in the hand power tool is obtained by the fact that, on each of two legs (5, 7) extending nearly parallel to the longitudinal axis (9) of the hand power tool, at least one lever (19, 21) oriented substantially at a right angle to the machine's longitudinal axis (9) is hinge-mounted at one of its two ends, and by the fact that the levers (19, 21) are hinge-mounted at their other ends to a region of the machine housing (1) located between the two legs (5, 7) of the handle (3).

A compact transformer coupled modulator is described. The modulator includes a transformer comprising a primary and a plurality of secondary windings, where each secondary winding has an output terminal. The modulator also includes a plurality of switches, where each switch is associated with a respective secondary winding and has input and output terminals and a control terminal. The control terminal of each switch is in electrical communication with a respective output terminal of the plurality of secondary windings. Each of the plurality of switches is substantially simultaneously switched by an input signal applied to the primary.

An apparatus and method for combining multiple simultaneous sources to multiple exhibitor receivers in a secure manner is disclosed. An exemplary system includes a plurality of live event sites each producing and transmitting a live video source. A live event director system is used for receiving and combining each transmitted live video source in an overall transmission and transmitting the overall transmission for exhibition. A network operation center coordinates encryption of the overall transmission at the live event director system and decryption of the overall transmission by at least one authorized exhibitor site. In further embodiments, the live event sites selectively transmit high bandwidth signals to reduce bandwidth usage.

The invention discloses a method, a device and a system for recording a song audio and belongs to the technical field of computers. The method comprises steps of: sending an accompaniment audio to a Bluetooth device through an accompaniment channel and sending a time sequential value to the Bluetooth device through a data channel according to a preset period; receiving a human voice audio sent by the Bluetooth device through a human voice channel and receiving a first time sequential value sent by the Bluetooth device through the data channel, wherein the first time sequential value is the time sequential value received when the Bluetooth device begins to play the accompaniment audio; and according to a second time sequential value sent when the accompaniment audio is begun to be sent to the Bluetooth device, and the first time sequential value, carrying out audio mixing on the accompaniment audio and the received human voice audio so as to obtain the sound audio. By use of the method, the device and the system, synchronization degree of the accompaniment audio and the human voice audio can be increased.

A lens compound for connecting to an interchangeable lens mount of a digital camera having a single image sensor, the lens compound including a body; a single mount connecting ring mounted on the body for connecting to the lens mount of the digital camera; at least two lenses of substantially identical focal length mounted in the body; and a different single or multi bandpass filter associated with each of the lenses, allowing the passage of at least one visible band and one non-visible band, selected from the group consisting of near infra-red bands and ultra violet bands of light, through the filters to the sensor; wherein the lenses are of substantially identical field of view and substantially identical image circle at a sensor plane of the image sensor.

The invention discloses a light weapon high-precision simulative shooting training system. The system comprises a laser tube, wherein the laser tube is connected to a control circuit and is positioned in a muzzle regulating mechanism; the control circuit comprises a laser emission control circuit; the laser emission control circuit comprises an emission control circuit and a light-operated switch connected to the emission control circuit; the muzzle regulating mechanism comprises a muzzle accommodating cavity; the light-operated switch is controlled by a push control device and the push control device is communicated with the muzzle accommodating cavity; the system is matched with a blank ammunition, so the recoil during shooting of a gun can be accurately simulated, and the shooting training is close to firing practice as much as possible.

A loading system for loading substrates with electrical components comprises at least one transporting line (2), by means of which a first and a second substrate (16, 17) can be transported in a transporting direction, a basic carrier (3), a first carrier slide (4), which is mounted on the basic carrier (3) displaceably in a displacing direction, an elongated first carrier arm (8), the longitudinal axis (9-1) of which is oriented transversely in relation to the displacing direction and which is mounted on the first carrier slide (4) displaceably in the direction of its longitudinal axis (9-1), and a first loading head (10) and a second loading head (11), which are arranged at a fixed distance from each other on the first carrier arm (8) on opposite sides of the carrier slide in the direction of the longitudinal axis (9-1) of the first carrier arm (8).

The invention provides a synchronizing mechanism of an automatic feeder. The synchronizing mechanism comprises a fixed support, a linear sliding rail and a machine tool attachment bracket, wherein the linear sliding rail is fixed on the fixed support; the machine tool attachment bracket and the linear sliding rail are connected with each other by virtue of a connecting piece; the bottom of the linear sliding rail is provided with a position measuring device; and the position measuring device is connected with a data feedback signal line. The synchronizing mechanism is simple in structure, low in failure rate and low in rod breakage possibility during the synchronization process, and can be used for greatly improving the production efficiency and lowering the production cost.

The invention discloses a cement bag opening folding device. The cement bag opening folding device comprises a machine frame, and at least two sets of opening folding units are disposed on a bag bodyconveying path of the machine frame in sequence; the cement bag opening folding device is characterized in that the opening folding units comprise bag opening mechanisms and angle folding mechanisms,and the machine frame is provided with a set of synchronous transmission mechanism A and a set of synchronous transmission mechanism B; the angle folding mechanisms comprise angle folding plates, andthe synchronous transmission mechanism A drives the angle folding plates to perform reciprocating linear motion; the bag opening mechanisms include bag opening plates, rotating shafts and bag openingpower sources, and the bag opening power sources drive the bag opening plates to perform up-down bag opening movement; the synchronous transmission mechanism B drives the bag opening plates to rotatearound the rotating shafts, a set of synchronous transmission mechanism A can simultaneously drive a plurality of sets of angle folding mechanisms to perform angle folding, and a set of synchronous transmission mechanism B can simultaneously drive rotation of a plurality of sets of bag opening mechanisms; and not only can improve the synchronization of the opening folding units, but also the cylinder assembly volume is reduced as much as possible, energy saving and emission reduction are achieved, and the cost is reduced.

The invention discloses a workpiece classification output device and an application thereof in detection equipment. The device comprises a discharging mechanism for outputting workpieces and a transferring mechanism for transferring the workpieces to the discharging mechanism, wherein the discharging mechanism comprises at least two groups of conveying components; each group of conveying components are arranged in sequence along the transferring direction of the transferring mechanism; the transferring mechanism can be used for transferring the workpieces to any of the conveying components. According to the workpiece classification output device disclosed by the invention, the transferring mechanism is set to be matched with different conveying components, so that the workpieces classified in a specific standard can be transferred to the corresponding conveying components and are output, the convenience in operation is greatly improved, and the efficiency is improved. The workpiece classification output device is particularly suitable for small and medium sized equipment, particularly mounted inside a shell for use.

The invention discloses a power cable local synchronous acquisition method based on a GPS. The method comprises following steps that a master-slave collector firstly initializes parameters of a serial port connected with a GPS module, receives character string data from the GPS module, checks the data and checks collector system time when the data is qualified; the master-slave collector firstly checks the time, then informs a slave collector to acquire time, and triggers a master collector to acquire data; the master collector also requests the slave collector to acquire data; the slave collector receives acquisition time and the acquisition requests from the master collector, and triggers a slave collection module to acquire data; and data acquired by the master collector and the slave collector is matched and positioned. According to the invention, by use of the GPS clock, quite high synchronization degree of time on two ends of a cable and quite accurate positioning precision are achieved; a discharging power source of the cable can be quickly found; and power supply quality is improved. The invention also discloses a power cable local synchronous acquisition system based on a GPS.