696results about How to "Fast communication speed" patented technology

The invention is embodied in a gigabit Ethernet adapter. A system according to the invention provides a compact hardware solution to handling high network communication speeds. In addition, the invention adapts to multiple communication protocols via a modular construction and design.

An efficient communications apparatus is described for a vector signaling code to transport data and optionally a clocking signal between integrated circuit devices. Methods of designing such apparatus and their associated codes based on a new metric herein called the “ISI Ratio” are described which permit higher communications speed, lower system power consumption, and reduced implementation complexity.

It is provided a mobile communication system comprising base stations, call control servers and access gateways. The call control servers cause a mobile terminal accommodated in one of the control server to transmit the location registration request so that the mobile terminal accommodates in another control server according to a processing amount of control signals. The base station selects a second call control server into which the one of the mobile terminals is to be newly accommodated. The one of the call control server switches to a power-saving state after the mobile terminal is accommodated into the another call control server.

A noncontact communication apparatus is disclosed which includes: an antenna resonance circuit configured to have a coil for communicating with an opposite party through electromagnetic coupling; a changing block configured to change a Q-factor of the antenna resonance circuit; and a control block configured to control the antenna resonance circuit to transmit and receive data to and from the opposite party at one of a plurality of communication speeds prepared beforehand, the control block further controlling the changing block to reduce the Q-factor the higher the communication speed in use.

The invention relates to a modularized multi-level converter sub-module control and protection method. The control and protection method comprises the following processing modes: in four control models of a sub-module, executing different control and protection logics by using a sub-module controller; generating a sub-module internal interface output signal, detecting an input signal and diagnosing a plurality of faults; executing control and protection actions by using the sub-module controller according to an action priority level; detecting the voltage of an energy storage capacitor C by using the sub-module controller; and performing asynchronous serial communication between the sub-module controller and a valve-based controller. In the method, a complete and intelligent control and protection scheme is designed aiming at the structure of the modularized multi-level converter sub-module, the coordinated control and protection of the overall sub-module can be realized, so that the stable and reliable operation of the sub-module in a converter and the coordinated matching with an overall control and protection system of the converter are ensured.

When first and second housings are in an open state, first and second switches are electrically opened, and thus, a first antenna element and a ground conductor operate as a first dipole antenna, and a second antenna element and the ground conductor operate as a second dipole antenna with isolation from the first dipole antenna by the slit. When the first and second housings are in the closed state, the first and second switches are electrically closed, and thus, the first antenna element operates as a first inverted F antenna on the ground conductor, and the second antenna element operates as a second inverted F antenna on the ground conductor with isolation from the first inverted F antenna by the slit.

The invention provides a framework system applied to the field of intelligent wear and based on an MEAN framework so as to solve the problem of interconnection of intelligent wear equipment, a mobile phone APP and a cloud server. Meanwhile, the invention provides an application framework applied to the field of child bracelet equipment and based on a tracking planned and triggered bracelet capable of preventing children from being lost so as to solve the problems that consumption of equipment batteries is increased and the tracking requirements of different scenes can not be met due to the fact that a child bracelet reports aimlessly in real time.

A plurality of frequency-channels are provided, each composed of an OFDM multi-carrier. The OFDM sub-carrier of each channel is orthogonal to the sub-carrier of any other channel, so that two or more channels may be considered to transmit the same OFDM signal. Further, a sub-area that uses two or more channels is provided in each service area in which a base station is located at the center and assigned with a basic-frequency channel.

The invention discloses a full digitalized distributed intelligent servo driver which adopts a full digitalized DSP (Digital Signal Processor) + FPGA (Field Programmable Gate Array) structure. The intelligent servo driver provided by the invention integrates the functions of motion control, motor control and a simple PLC (Programmable Logic Controller) and can conveniently construct a motion control system without an upper computer motion controller (card). The intelligent servo driver can be used for controlling and driving a direct current brush (brushless) motor, an alternating current servo motor and a linear motor only through software configuration without changing hardware. The intelligent servo driver can realize the following operation modes: A. an RS232 network control mode; B. an RS485 distributed network control mode; C. an independent driver running mode without the upper computer; D. a pulse command running mode; and E. an analog signal running mode. The servo driver provided in the invention adopts a modularized structure, the same control module can be matched with driving modules of different power levels to form intelligent servo driving systems of different power levels. By utilizing the full digitalized distributed intelligent servo driver, a motion control system with the advantages of low cost, flexible system configuration, simpleness and convenience for operation, reliable performance and convenience of maintenance can be realized.

The invention discloses a battery management system of an electric vehicle, which comprises a primary vehicle-body system, a main controller and a battery pack, wherein, the battery pack is formed by more than two batter modules connected in series, the batter modules are formed by connecting more than two single cells in series, each battery module is provided with a battery collecting module, the battery pack is respectively connected with a complete vehicle power system through a discharging relay and a charging relay, the main controller is connected with a previous complete vehicle system through a first optical isolator, and the battery collecting module is connected with the main controller through a second optical isolator. The battery management system has the advantages that: as the battery management system is composed of the main controller (BMU) and the next battery collecting module (LECU), the composition of the system structure is simplified through the main controller and the next battery collecting module, the cost of the hardware of the system can be reduced, and simultaneously, the reliability of the management system can be greatly enhanced.

The invention relates to the technical field of communication, in particular to a method and a device for testing a terminal based on the Android, solving the problem that currently, testing software is required to be designed according to different chips during development. The method provided by the embodiment of the invention comprises the following steps: establishing Socket connection between a testing terminal and a terminal to be tested via an ADB interface; and via the established Socket connection, achieving signal interaction and data transmission between the testing terminal and the terminal to be tested by adopting a communication protocol supported by the ADB interface. According to the invention, since the Socket connection between the testing terminal and the terminal to be tested is established via the ADB interface, when terminals to be tested, which are based on different hardware platforms, are tested, communication can be achieved as long as a communication protocol supported by the ADB interface is adopted, therefore, different testing software is not required to be developed to aim at different hardware platforms, and further development repeatability of the testing ware is reduced.

A closed loop self-adapting emergency control method of power pool' centralized harmonization and hierarchy control' is disclosed, which adopts the quadrilayer structure of a dispatching center station, a control main station, a control sub-station and a control execution station from top to bottom, including the following control steps: 1. safely and stably controlling the system uploading operation data to the dispatching center station; 2. controlling the decision-making computation by the dispatching center station to obtain the online strategy table; 3. sending down the online strategy to the control main station by the dispatching center station and furthermore sending down to the related control sub-station by the control main station; 4.judging the failure and the overload according to the related failure and the overloading criterion by the control sub-station and the execution station; 5. transmitting the failure information to the upper control station layer by layer by the control sub-station and the execution station; 6. performing the failure combination match by the control main station; 7. sending the cutting machine and the cutting load command tot he corresponding control sub-station by the control main station; 8. reprocessing and transmitting to the execution station by the control sub-station; 9. cutting machine and cutting load exit by the execution station.

The invention discloses a certificate authentication device which comprises a normal storage module, a storage control module and an interface module, wherein the normal storage module is connected with the storage control module, and the storage control module and the interface module are connected. The certificate authentication device further comprises a safety storage module, an operation processing module and a safety control module, wherein the safety storage module is respectively connected with the operation processing module and the safety control module and used for storing private information for certificate authentication; the operation processing module is used for performing hardware acceleration on an encryption algorithm; and the safety control module is connected with the storage control module and used for scheduling the operation processing module to perform operation and controlling the safety storage module to perform data storage and output. The certificate authentication device disclosed by the invention can have a higher certificate authentication speed under the condition of ensuring the safety. The invention further discloses an access method and a certificate update method based on the certificate authentication device so as to realize the access of the certificate authentication device and the update of the certificate.

A clock recovery circuit includes a phase discriminating circuit for discriminating, at every edge of a received data signal, phase lead or phase lag of an identically directed edge of the clock signal, and outputting the phase discrimination signal; an edge detecting circuit for detecting edges of the received data signal, outputting an edge detection signal of a fixed pulse width, delaying the received data signal and outputting the delayed signal; an exclusive-OR gate for outputting, as an edge injection signal, an exclusive-OR signal between the phase discrimination signal and delayed signal; and a voltage-controlled oscillator for variably controlling frequency of ring oscillation, injecting the edge injection signal into the loop of ring oscillation, and outputting a clock signal locked to the received data signal.

The invention provides multi-card communication equipment and a communication processing method thereof, and aims at solving the problems that a selecting process often occupies a long time, and achievement speed of communication is low due to the fact that a user independently selects a card for using when existing multi-card communication equipment is in communication. The communication processing method of the multi-card communication equipment includes that the card communication equipment receives a command to be communicated with targeted communication equipment. According to the multi-card communication equipment, a preferred card can be automatically ensured among the multiple built-in cards according to the command, and the multi-card communication equipment responses to the command by using of the preferred card. According to the multi-card communication equipment, due to the technical scheme, card selecting time is shortened, and the achievement speed of the communication is accelerated.