109 results about "Two way channel" patented technology

A system for delivering broadcast and communications services, wherein said services comprise provision of one or more Internet media streams; the system comprising one or more gateways which provide connections to external communications networks and nodes and internal loopbacks from which said services are obtained, each of said gateways comprising: a selection system to selectively establish communication channels with said external communication nodes networks and said loopbacks to establish an individual bidirectional channel between each node network and allow recipients to obtain the communication channel of their choice; a processing system comprising non-blocking matrix switching or routing system, buffering, packeting, and addressing systems; processing said channels containing services into digitized packaged data format and said addressing systems identifying, storing and updating the location of each recipient, and applying routing information to each packet of digitized packaged data to enable packets to be correctly routed through the system.

Aspects of a method and system for energy efficient signaling for 100 mbps Ethernet using a subset are provided. In this regard, a network device enabled to communicate over a network link at 1 Gbps or faster may be configured to communicate over the network link at, or approximately at, 100 Mbps by reducing a number of active channels over which the network device communicates and / or reducing a size of a signal constellation utilized by the network device to encode data. The device may communicate according to 1GBASE-T or 10GBASE-T standards. The number of active channels may be reduced to a single bidirectional channel or two unidirectional channels. The signal constellation may be reduced to two or three levels. One or more components of the network device may be unnecessary for recovering data when communicating at 100 Mbps and may thus be powered down, or placed into a lower power mode.

A method, apparatus and system is disclosed herein for wireless transmission based on MU-MIMO and two-way training. In one embodiment, the system comprises a set of K receivers and at least one transmitter having a set of N transmit antennas, where the transmitter is operable to precode a signal for downlink transmission to each receiver in the set of K receivers based on multi-user MIMO using precoding derived based on two-way channel training between the set of K receivers and the set of N transmit antennas

A branching memory-bus module has one uplink port and two or more downlink ports. Frames sent downstream by a host processor are received on the uplink port and repeated to the multiple downlink ports to two or more branches of memory modules. Frames sent upstream to the processor by a memory module on a downlink port are repeated to the uplink port. A branching Advanced Memory Buffer (AMB) on the branching memory-bus module has re-timing and re-synchronizing buffers that repeat frames to the multiple downlink ports. Elastic buffers can merge and synchronize frames from different downlink branches. Separate northbound and southbound lanes may be replaced by bidirectional lanes to reduce pin counts. Latency from the host processor to the farthest memory module is reduced by branching compared with a serial daisy-chain of fully-buffered memory modules. Point-to-point bus segments have only two endpoints despite branching by the branching AMB.

In a frame-switched network, a sender sends frames to a receiver over a possibly unreliable channel. Sent frames include frame identifiers that can be used for a limited automatic repeat request. Upon receipt of a frame, the receiver determines, from the frame identifier, if frames prior to the received frame were lost in transit. If the receiver determines that it missed a prior frame, the receiver sends the sender a negative acknowledgment (nack) for the missed prior frame or frames. Otherwise, if the receiver receives a frame correctly, it does not acknowledge the frame. The frame identifiers can be a set of sequential integers with frames transmitted in sequential frame order. In some embodiments, when a receiver receives a frame out of order, the receiver buffers the out of order frame in a receiver buffer for a receive buffer period until preceding frames are received or a receive buffer period expires. The sender can send a reminder frame to the receiver to allow the receiver to detect a missed prior frame missing from an end of a frame sequence. The channel between the sender and the receiver can be a bidirectional channel over a telephone wire, a cable, a radio frequency link or a power wire. Multiple logical channels might be set up between a given sender-receiver pair, to allow for traffic of varying priorities.

This invention utilizes digital watermark technology to identify program content and test and process the digital watermark information inserted into a specific program of a 2-way set-top box to finish collection of owners of copyright, the play time and length, then a back-transfer module finishes the transfer of information from the box to the front system to finish further data process, which can also finish the control to the box and the watermark test module by a dual channel.

The device includes following parts. The protection switches of 4 multiplexing segments are utilized to change optical fiber line. Two pair of wavelength division multiplexer / wavelength demultiplexer combines multiple optical signals with different wavelengthes onto one optical fiber; or separates the optical signals, which is combined from multiple different wavelengthes. N pieces of matrices with 4 in and 4 out of the optical switches are utilized to change the propagation direction or protect the channel needed. 2n pieces of optical power equalizers are used to balance the power of the optical signals. 2n+2 pieces of monitors are used to monitor and detect faults. The invention provides the flexible protection for channel faults, line faults and node device fault.

The invention relates to a deadlock-free self-adapting routing method of a three-dimensional torus network and belongs to the field of distributed high-performance fault-tolerance computing technology. The method is characterized in that each physical channel is divided into two virtual channels from the middle, and the two virtual channels are both two-way channels distributed into four virtual subnets of the three-dimensional torus network; some virtual channels are allowed to be shared among different subnets. Turning models are used so as to avoid possible deadlocks in and among the subnets and achieve higher self-adoption. Compared with the traditional Duato protocol and GOAL method, the method of the invention can significantly improve the practical network traffic and reduce transmission delay so as to improve the transmission performance of the entire network when the standardized input load and fault node quantity in the network increase.

The invention relates to a wideband data communication system and method for integrating an IP network and a cable television network. The method comprises the following steps: a terminal and an integration channel gateway establish an end-to-end two-way channel on the IP network; an IP / digital video broadcasting (DVB) gateway and the cable television network constitutes a one-way communication channel from the integration channel gateway to the terminal; the terminal transmits an uplink IP packet to the integration channel gateway through the two-way communication channel of the IP network, and the integration channel gateway acquires the uplink IP packet from the IP network, inquires an address mapping table, converts the address and transmits the converted uplink IP packet to the IP network; and the integration channel gateway receives a responded downlink IP packet from the IP network, inquires the address mapping table and converts the address, and the integration channel gatewaytransmits the converted downlink IP packet to the terminal through the two-way channel of the IP network, or through the one-way communication channel composed of the IP / DVB gateway and the cable television network from the integration channel gateway to the terminal or simultaneously through the two-way communication channel and the one-way communication channel.

The invention discloses an image classification method for two-way channel attention element learning. A relationship between a support set and a query set is learned in meta-learning through an attention model mechanism, so that the support set and the query set pay attention to each other. The advantages are mainly reflected in that: it is assumed that when visual features of image samples of the support set are mapped to category features, attention of a query set sample to the support set sample feature salient region is considered, meanwhile, the attention of the support set to the salient region of the query set is also considered, and the relationship between the support set and the query set is mined, so that the attention of the network to the salient region and the detail regionof the image feature is improved, the convergence speed is increased, and the performance of the meta-learning-based few-sample image classification method is further improved.

The invention discloses a minimum mean square error beam forming-based information transmission method in a two-way channel, belongs to the technical field of wireless communication, and mainly solves the problem of high technical complexity of the prior art. Particularly, the invention provides the information transmission method capable of improving channel capacity and error ratio performance, and reducing complexity at the same time by aiming at a wireless communication network of two source nodes and a relay node. The method comprises the following steps that: the two source nodes simultaneously send encoding information to the relay node; the relay node builds a beam forming matrix according to a minimum mean square error rule; the relay node carries out beam forming processing on the received source node mixed information, and then broadcasts the source node mixed information after the beam forming processing to the source nodes; and the source nodes are decoded to acquire information of other parts. The method reduces the complexity and ensures the correctness of transmission without great influence on system performance, and can be used for reliable information transmission in a two-way relay system.

A branching memory-bus module has one uplink port and two or more downlink ports. Frames sent downstream by a host processor are received on the uplink port and repeated to the multiple downlink ports to two or more branches of memory modules. Frames sent upstream to the processor by a memory module on a downlink port are repeated to the uplink port. A branching Advanced Memory Buffer (AMB) on the branching memory-bus module has re-timing and re-synchronizing buffers that repeat frames to the multiple downlink ports. Elastic buffers can merge and synchronize frames from different downlink branches. Separate northbound and southbound lanes may be replaced by bidirectional lanes to reduce pin counts. Latency from the host processor to the farthest memory module is reduced by branching compared with a serial daisy-chain of fully-buffered memory modules. Point-to-point bus segments have only two endpoints despite branching by the branching AMB.

The invention discloses a method for synthesizing and applying two-way channel quality indication in a time division duplex system, which comprises the following steps: setting up a first period t and a second period T. In the first period t, a sending terminal measures an upstream channel signal of a receiving terminal, acquires an upstream channel quality indicator CQI-U and adjusts a transmission policy according to the upstream channel quality indicator. In the second period T, the receiving terminal measures a downstream channel signal, acquires an downstream channel quality indicator, feeds back to the sending terminal, and further adjusts the transmission policy according to the downstream channel quality indicator by the sending terminal. The invention further discloses a time division duplex communication system. The invention replaces the single downstream channel COI feedback in prior art through adjusting the transmission policy by the sending terminal with consideration of the upstream and downstream channel CQI, thus saving the expenditure on upstream signaling and meanwhile reducing possible time delay.

A method and apparatus redundantly store data, in particular video data objects, in a distributed computer system having at least three processor systems, each processor system being connected in point to point two way channel interconnection with each other processor system. The data is stored in a redundant fashion both at the computer system level as well as the processor system level. Accordingly, the failure of a single processor does not adversely affect the integrity of the data. The computer system can also overlay a switching system connected in a ring fashion for providing a fault tolerance to the failure of a single connected processor system at the switch level. Accordingly, there results a fault tolerant data distribution system.

The automatic immunological analysis apparatus comprises a plurality of bidirectional channels. Each channel is associated with a support carriage supporting reaction cups, moving along a corresponding guide rail according to predefined analysis protocols. The movement of each carriage is controlled independently on each channel. The apparatus comprises a distribution module, a washing module and a measuring module common to all the channels. The apparatus also comprises an independent incubation module for each channel and an independent agitation system associated with each support carriage of the cups.

The invention relates to a deadlock-free routing method in K-ary N-dimension mesh network, belonging to the field of distributed high performance fault tolerant computing technology. Each physical channel between nodes is divided into two virtual channels which are two-way channels and distributed to rising subnet and falling subnet of each plane in N-dimension mesh network. The method avoids deadlock which may be formed between arbitrary adjacent planes by overlapping technology, and reaches highest adaptability by the highest dimension idle channel; the smallest connecting component created by planes on the basis further improves fault-tolerance performance. Compared with traditional PAR method and Gomez method, as standard input load and network fault node number increased, the invention can obviously improve network actual flow and reduce transmission delay, thus improving the transmission performance of the whole network.

The invention discloses a shared protection system and a method of an optical ring network path, which avoids a loop circuit self-excitation, concerning a system and a method which avoid the self-excitation in an annular network of optical transmission and designed for solving the problem that the prior self-excitation restraining method lowers the signal-to-noise ratio or the operation agility is not good. The system of the shared protection of the optical ring network path, which avoids the loop circuit self-excitation, adds a vibration damper to a protection trail and changes the protection trail by the damping estate and the through estate of the vibration damper, which stops the protection trail from being closed. The shared protection method of the optical ring network path, which avoids the loop circuit self-excitation, includes that: (1). an amplifier conducts the real-time detection of the line status information of the system and transmits the information to a switching control unit of automatic protection. (2). the switching control unit of automatic protection controls the vibration damper to be switched between the damping estate and the through estate according to the line status information. The invention is mainly used in the shared protection system of two-fiber bidirectional path to protect the switching and effectively avoid the loop circuit self-excitation.

A data receiving apparatus has a unidirectional channel receiver for receiving segmental data forming an electronic file, through a unidirectional channel; a file assembler for restoring the electronic file, based on the segmental data received by the unidirectional channel receiver; a channel information memory for acquiring location information for specifying a location of the electronic file; and a bidirectional channel transmitter / receiver for establishing a bidirectional channel when there arises a need for retransmission of the electronic file, for sending a request for transmission of the electronic file to a data transmitting device specified by the location information, through the bidirectional channel, and for receiving the electronic file through the bidirectional channel.

The invention discloses a ship sailing safety assessment system, which comprises a main frame, a shipping line design module, a ship motion math model module, a ship dynamic parameter acquisition module, a scoring module and a historical record and replay module. Computer simulation technology is adopted, and an automatic ship sailing safety assessment and simulation system which can provide similar marine situations is developed. Different ship types and different wind current conditions can be set, actual marine navigation conditions can be simulated, and thus vividness and richness of assessment can be enhanced. Ship sailing operation assessment can be carried out without restrictions of time and water areas. Whether in a one-way channel or in a two-way channel, an automatic assessment function after sailing is over can be realized, bad influences of subjective factors of an examiner on the assessment result can be avoided, workload of checking ship operation records by the examiner can be reduced, external other sailing data can be guided to the system of the invention for assessment, and the assessment level and the assessment quality are improved.

The invention relates to an HFC network downlink data multi-channel packaging and transmitting method used for an HFC network which comprises an IP two-way channel and multiple QAM one-way channels. The method includes the steps that a sending end sends information of the assigned QAM channels to a receiving end before sending data requested by a user to the receiving end; the sending end distributes data packets in the data requested by the user to the assigned QAM channels to be packaged; the assigned QAM channels transmit the packaged data packets in parallel; the receiving end receives the data on the assigned QAM channels in parallel, and sequence recovery of the data packets is achieved according to service flow identification fields and service data packet serial number fields.

The invention discloses a superframe-based Ad-Hoc network method. The method comprises the steps: a physical layer frame structure of an Ad-Hoc network is constructed, and a two-way channel communication link structure of the Ad-Hoc network is constructed through the physical layer frame structure; and on the basis of the physical layer frame structure and the two-way channel communication link structure, frames are allocated to nodes in the Ad-Hoc network in superframe periods by adopting a distributed allocation method or a centralized allocation method, and therefore after the nodes allocated with the frames are taken as main nodes, the main nodes are controlled to establish two-way channel communication links with other nodes in a preset range. The invention further discloses a superframe-based Ad-Hoc network device and node terminal and a computer readable storage medium. Accordingly, the problem that when a time slot is taken as a scheduling object, the networking process of theAd-Hoc network is tedious is solved.

A limited feedback method and apparatus for two-way relay channels with physical network coding are disclosed. An embodiment of the invention provides a method of providing parameters as feedback to two terminals according to channel conditions by a relay for two-way communication in a two-way relaying system using PNC (physical network coding). This method includes: (a) quantizing phase difference information of two-way channels of the two terminals in consideration of whether or not a ratio of a minimum distance between constellation points is periodic according to modulation level; and (b) transmitting feedback information, which contains at least one of the phase difference information and the power control information of the two terminals, as a limited number of bits to the two terminals. Here, the number of bits for the phase difference information or the number of bits for the power control information is determined according to the modulation level.

The portable sensor device is connected with the arterial pressure measurement catheter by way of a pressure hose. The electronic pressure sensor is accommodated in the sensor housing. The analog sensor signal is output to the patient monitor by way of a cable. Aside from the channel for the analog sensor signal, additional channels are provided for communication between sensor device and patient monitor. A bidirectional channel serves for writing to and querying the memory module, in which patient data, such as age, gender, height / weight, etc., can be stored. The three-way cock possesses the settings “M” (measurement operation) and “0” (calibration measurement), in which the contactor is brought into connection with the contact. The switching contact is transmitted to the patient monitor, which thereby automatically recognizes zeroing of the sensor.

The invention discloses a scheduling method and system for multipartite calling business. Wherein, when requiring group-calling or adding MPTY business in broadcast business, adding the node denoting the MPTY business in the context of group-calling or broadcast business, and adding the node denoting the group-calling or broadcast business in the MPTY business context to connect the two nodes by two-way channel; when creating the MPTY business in scheduling terminal, adding built business into the MPTY business, or holding the built one, and new building the group-calling or broadcast business to add into the MPTY business.

A method and apparatus redundantly store data, in particular video data objects, in a distributed computer system having at least three processor systems, each processor system being connected in point to point two way channel interconnection with each other processor system. The data is stored in a redundant fashion both at the computer system level as well as the processor system level. Accordingly, the failure of a single processor does not adversely affect the integrity of the data. The computer system can also overlay a switching system connected in a ring fashion for providing a fault tolerance to the failure of a single connected processor system at the switch level. Accordingly, there results a fault tolerant data distribution system.

An intelligent IIoT system using two-way channel ANN without gateway, the intelligent IIoT system is connected to sensing devices and motion devices. comprising a PLC with I / O module, communication module, perception database, motion database, edge computing module and the first MQTT data module; a Cloud server with MQTT agent, Big Data module, Human-Cloud visual database and Human-Cloud control database; and a remote device with Human-Cloud visual interface program, Human-Cloud control interface program and the second MQTT data module; and the three components are connected via network; it is unnecessary to construct gateways and network communication equipment, low construction cost, short construction period, easy maintenance, low power consumption, faster communication speed, two-way many-many transmission, stably synchronous real-time processing, and very reliable.

This invention discloses a conditioning method for digital signals (DS).It includes the following aspects: adopt isolation MOS relay to condition export signal; adopt jumper clot to condition multi-voltage signal; adopt large current channel to condition single spot signal; adopt two-point difference export to condition difference signal; adopt serial light coupling and fabric method to condition export signal; adopt diode, light coupling and fabric method to condition two spot input signal. The advantages are low cost, small volume, easy to operate.