43results about How to "No changes involved" patented technology

The invention provides a media forwarding method, a media receiving method, a client, and a system. The media receiving method comprises: receiving a media displaying description, wherein the description includes 3-dimensional description information of a video; choosing to display according to the 3-dimensionaldescription information; sending fragment obtaining request to a server corresponding to the chosen display according to the sectioning information in the media displaying description, wherein the fragment obtaining request is used for obtaining the fragments chosen to display; and receiving the fragments required by the fragment obtaining request. The invention conquers the defect of the prior art, by which the 3-dimensional description information is received after a relatively long while when the receiver starts media receiving.

The invention discloses a method and device for achieving a push notification of an extensive application program. The extensive application program is the application program which needs to be installed in the environment where program installation limits applied by an operation system has been overcome by system privileges. The method comprises the steps that an identification list of application programs, with push notifications registered, on the operation system is intercepted, and the identification of the extensive application program is added into the identification list; push notification parameters related to the extensive application program are set; an application program push state interface of the operation system is obtained, and the identification and the push notification parameters of the extensive application program are read; according to the read identification and push notification parameters of the extensive application program, a push notification related to the extensive application program is displayed on a terminal. According to the method and device for achieving the push notification of the extensive application program, the extensive application program is added into the application program identification list with the push function, and the push parameters related to the extensive application program are set, and the push notification function is achieved on the jailbroken extensive application program.

The invention discloses a mixed-type loading balance method in a data center network. According to the method, a central controller is deployed for obtaining global network information, a terminal host is deployed for fast routing of middle-small streams, and meanwhile a decision-making right for centralized loading balance and a decision-making right for distributed loading balance of the terminal host are given to the central controller; the central controller utilizes the global information to arrange paths for predefined large streams and calculates global optimum network queuing delay forpredefined middle-small streams, and the terminal host conducts distributed path selection for the middle-small streams and carries out rerouting under the limitation of the global optimum network queuing delay. The central controller and the terminal host cooperate with each other separately, and in a network with demands for different flows, high throughput of the large streams and low delay requests for the middle-small streams are ensured at the same time. Compared with a pure intensive or distributed scheme, the method has the advantages that all flows in the network can be taken into account at the same time, the demands for different flows are met, and the method is flexible, convenient and easy to configure.

The invention provides an estimating method and device for the pure-electric-vehicle motor output torque and an electric vehicle, and relates to the technical field of vehicle control. The estimating method includes the steps that according to preset sampling periods, three-phase currents of a motor, current inclination angles of the three-phase currents in an alpha-beta coordinate system, three-phase voltages and voltage inclination angles of the three-phase voltages in the alpha-beta coordinate system are periodically obtained; according to the current inclination angle and the voltage inclination angle which are obtained in a current sampling period, the rotating speed of the motor in the current sampling period is estimated; according to the three-phase current, the three-phase voltage, the current inclination angle and the voltage inclination angle which are obtained in the current sampling period, a reliability value of the current sampling period is obtained; according to the rotating speeds and the reliability values of all the sampling periods and preset control periods, the rotating speed of the motor in a current control period is estimated; according to the rotating speed of the motor in the current control period, the current output torque of the motor is obtained. The estimating method for the motor output torque is reliable, effective and high in accuracy, and has the good popularization value.

The invention relate to WLAN field, a method for implementing WAPI system-based virtual LAN (VLAN) in WLAN. And it is based on GB15629.11-specified WAPI safe structure, adopts user certificate according with GB15629.11, and on the basis that GB15629.11-specified user certificate possesses unused field and supports user custom, sets mapping relation attribute of mobile terminal (MT) certificate, MAC address of MT, user group ID (UGID) and VLAN ID, and wireless access point (AP) checks and sets the attribute and transfers or discards corresponding data according to the provisions of the attribute, thus implementing a function that WLAN supports VLAN.

The present invention proposes an interworking method of calling each other at the same time by subscribers in an IMS communication system. The method comprises following steps that if the system detects a subscriber in calling and called subscribers opens a calling conflict service and the calling and called subscribers call each other at the same time, one path in two independent callings initiated by the calling and called subscribers is removed according to a calling conflict handling strategy, and the other path of calling is connected. According to the method, the problem of a calling failure when two subscribers call the other side at the same time is solved based on the service realization of the IMS, the involved net elements of the IMS are few, and the method is realized purely in a service way and is not does not involve hardware changes.

The invention relates to a block chain hidden information transmission method and system based on dynamic marking. The method comprises the following steps: counting data true probability distributionof an OP_RETURN field of a block chain protocol; generating a dynamic mark according to the negotiated seed and the data real probability distribution of the OP_RETURN field; and enabling the sendernode to fill the dynamic marks into the OP_RETURN fields of the two transactions, performing digital signature by adopting an elliptic curve cryptographic algorithm, and sending the two signed transactions to the block chain; enabling the receiver node to identify the two transactions according to the dynamic marks, performing elliptic curve cryptography algorithm random number leakage attack on digital signatures of the two transactions, calculating used random factors, deducing a private key, namely an encoded encrypted message, decoding the encrypted message and decrypting the encrypted message by using a secret key negotiated with the sender node. According to the invention, the undetectability and tracking resistance of the channel can be realized, the strong robustness is satisfied,and the risk of user privacy exposure is greatly reduced.

The invention discloses a detection method for selfish mining behaviors on a workproof mechanism block chain. The detection method comprises the following specific steps: S1, monitoring the situationthat each miner publishes a block in the block chain; S2, when a suspicious block is monitored, respectively calculating the values of Sstate, Fstate and Hstate; S3, judging a size relationship amongthe values of the Sstate, the Fstate and the Hstate: if the Hstate is less than the Sstate or the Fstate is less than 0, determining that the monitored suspicious block is published by a selfish miner; S4, if the condition in S3 does not exist, calculating Asize / n and p, and if Asize / n is less than p, enabling the regional block to refuse to monitor the suspicious block, otherwise, enabling the regional block to receive the monitored suspicious block. According to the method, selfish mining behaviors in the block chain can be discovered directly through existing public information, the changeof a block chain difficulty adjustment scheme is not involved, and the income of honest miners is not influenced.

The invention relates to the field of communication, and discloses terminal equipment and a communication method for a terminal. In the terminal equipment, the functions of CS and PS services are mutually independent by reforming an MM and a GMM in a non-access layer and removing the correlation between the MM and the GMM on the premise of keeping the implementation mode of an access layer (comprising a physical layer). Therefore, the terminal equipment can perform the operations of residing, receiving broadcast information, initiating services and the like in two different service cells at the same time so as to comprehensively provide good quality of service, and is simple to implement.

The invention discloses a permanent magnet synchronous motor demagnetization fault detection method and device, and an automobile. The method comprises the steps of acquiring the state of a motor; when the motor state is a steady state, obtaining a first torque estimation value output under the steady state condition of the motor, and calculating steady state deviation delta E according to the first torque estimation value; when the motor state is a transient state, obtaining a second torque estimation value output under the motor transient state condition, and calculating a transient characteristic evaluation parameter Es according to the second torque estimation value; and judging whether the motor has a demagnetization fault according to the steady-state deviation delta E and the transient characteristic evaluation parameter Es. The permanent magnet synchronous motor demagnetization fault detection method realizes fault detection when a motor permanent magnet demagnetization fault,especially when the motor permanent magnet demagnetization fault does not reach a severe demagnetization state, is clear in thought, clear in detection mechanism, small in required calculation amountand easy for engineering realization, does not involve change of system hardware, does not increase system cost. Therefore, the method has good popularization value.

The invention discovers and defines a possibly existent problem of an interruptability remapping mechanism under a virtual symmetric multi-processing environment: the interruptability holder preemption (IHP, interruptability holder preemption) problem. The problem causes the failures of the interruptability remapping mechanism, and reduces the I / O performance of a virtual machine. For solving theIHP problem, the invention provides a proactive VCPU integrated scheduling method based on the interruptability holder information. Through the method provided by the invention, a VCPU integrated scheduling method is constructed by globally mastering and analyzing an operation state of the interruptability holder and giving consideration to the global scheduling fairness of the system based on theextensively used KVM (Kernel-Based Virtual Machine) at present and a semi-virtual network model; the IHP problem is effectively eliminated, and the I / O performance of the virtual machine is obviouslyimproved.

Provided is a three-level inside and outside tube voltage sharing control method for a three-level inverter. The method aims at a diode clamp type three-level inverter circuit. The method is characterized in that in the process of generating driving signals of a first switch tube, a second switch tube, a third switch tube and a fourth switch tube, when switching of the switch tubes from 0,0,1,1 to 1,1,0,0 and switching from 1,1,0,0 to 0,0,1,1 are recognized, a section of transition signals is inserted into the driving signals of the first switch tube, the second switch tube, the third switch tube and the fourth switch tube forcedly and respectively. The corresponding states of the transition signals are that the first switch tube is disconnected, the second switch tube is connected, the third switch tube is connected and the fourth switch tube is disconnected, namely 0,1,1,0. By means of the method, the problem that inside and outside tubes of a zero crossing point of the diode clamp type three-level inverter circuit do not share voltage is well solved.

The invention discloses an excavator oil consumption display control system, a control method thereof, and an excavator comprising the excavator oil consumption display control system and the control method, and belongs to the field of excavator oil consumption control. The excavator oil consumption display control system comprises a flow sensing device, an analog-digital converting device, a control device and a display device, wherein the flow sensing device is installed at an oil spraying nozzle of a motor and is connected with the analog-digital converting device; the analog-digital converting device is connected with the control device through a CAN (controller area network) bus; and the control device is connected with the display device through a CAN bus. The control method of the excavator oil consumption display control system comprises the steps of displaying instantaneous oil consumption, displaying accumulative oil consumption and displaying loading accumulative oil consumption. The technical scheme has the advantages as follows: only the flow sensing device is additionally arranged in the conventional excavator oil consumption display control system, and a fuel oil pipeline is not improved; signals are transmitted through the CAN buses, so that the anti-jamming capability of the excavator oil consumption display control system is strong; and through calculation of a control device of the excavator, the instantaneous oil consumption, the accumulative oil consumption and the loading accumulative oil consumption can be calculated.

The invention provides a permanent magnet synchronous motor output torque estimation method and system, and relates to the technical field of automobiles. The method comprises the steps of obtaining motor parameters when a permanent magnet synchronous motor is in a predefined low-rotating-speed working condition; inputting the motor parameters and the current torque command into a pre-trained radial basis function (RBF) neural network to obtain an output torque; and performing Kalman filtering on the output torque to obtain a corrected output torque. According to the invention, the nonlinear relationship between motor parameters and output torque is solved by introducing an RBF neural network while a method for obtaining training data is provided, so that the calculation precision of the neural network is ensured, and Kalman filtering is introduced to process the output torque so as to further improve the precision; and the scheme does not involve the change of system hardware, so thatthe system cost is not increased.

The invention discloses an asphalt mixing station fuel oil consumption rate display system and a control method thereof, the asphalt mixing station fuel oil consumption rate display system includes a cold aggregate electronic belt scale, a weighing transducer, a flow sensor, a flow transducer and a control device; the cold aggregate electronic belt scale is installed at the feed end of an asphalt mixing station drying drum, and is connected with the weighing transducer; the weighing transducer and the control device are connected, the flow sensor is installed at the oil nozzle of an asphalt mixing station burner, and is connected with the flow transducer; the flow transducer is connected with the control device; and the control device is used to judge and process the received cold aggregate instantaneous flow and fuel oil flow data to obtain instantaneous fuel oil consumption rate, average fuel oil consumption rate and cumulative fuel oil consumption rate, and shows the operation results. The asphalt mixing station fuel oil consumption rate display system can in real time display fuel oil consumption rate, and facilitates to know fuel oil consumption condition.

The invention discloses a multi-optical-port communication method, device and equipment, and a storage medium. The method comprises the steps of pre-configuring Vlan IDs of a plurality of optical ports; and when a data packet transmitted from a certain optical port is obtained, transmitting the data packet to a corresponding application layer according to the Vlan ID corresponding to the optical port. Through the identifier Vlan ID corresponding to the optical port, the data packet can be different from data packets transmitted from other optical ports, and because the frequency bands of signals transmitted from different optical ports are different, the application layers of the data packets transmitted from different optical ports needing information interaction are different. The data packet can be transmitted to an application layer corresponding to the optical port for information interaction through the unique Vlan ID. According to the method provided by the invention, multi-optical-port communication is realized through the mapping relationship between the pre-configured Vlan ID and the optical ports, any opposite end or next-level unit / equipment does not need to be configured or modified, and the MAC address of any unit / equipment is not changed in the whole transmission process of the data packet, so that the problem of MAC address conflict is avoided.

The invention provides a power-on control method and device for a low-voltage storage battery of an electric automobile and the electric automobile, and relates to the field of power-on processing ofthe low-voltage storage battery of the electric automobile. The power-on control method for the low-voltage storage battery of the electric automobile comprises the steps: obtaining a performance reduction judgment result of a previous power-on period of a current power-on period of the low-voltage storage battery and the awakening frequency Ni of a controller in the power-on process of the low-voltage storage battery; determining a low-voltage power-on mode of the current power-on period of the low-voltage storage battery according to the performance reduction judgment result and the wake-upfrequency Ni; and obtaining a performance reduction judgment result of the low-voltage storage battery in the current power-on period when the low-voltage storage battery is powered on according to the low-voltage power-on mode and the awakening frequency of the controller. According to the embodiment of the invention, the stability and stationarity of the output voltage in the power-on process ofthe low-voltage storage battery are ensured by detecting the performance degradation of the storage battery and awakening the controller by stages, and the driving feeling is ensured.

The invention discloses a method for recovering the ACL link between a Bluetooth telephone gateway and an extension. By adopting the method / system, the large-extent decrease of the standby duration of the extension due to the processing of recovering the ACL link can be effectively avoided. The system of the invention comprises a gateway and the extension; wherein, the gateway is used for searching for the off-line extension when the extension is disconnected and sending a login request to the off-line extension when the off-line extension is found, so as to complete the registration of the extension; the extension is used for completing the registration process cooperating with the gateway when being found by the gateway after the extension is off line. In the method of the invention, four timers are adopted to manage the method flow; wherein, a cycle timer is used for the cycle management of the whole flow, a searching timer is used for controlling the searching time, a connecting timer is used for controlling the single connection between the gateway and the extension and a dormancy timer is used for the processing in case of failure in connection. The invention requires no change of the hardware, which has the advantage of universality and the meaning of popularization.

The embodiment of the invention discloses a color printing business processing method comprising the steps that color printing business is triggered at the terminal of a calling user or the terminal of a called user, and the terminal of the calling user initiates calling and then acquires the Invite request initiated by a calling side serving-call session control function (S-CSCF) or media gateway control function (MGCF) to the called side S-CSCF; and the home region of the terminal of the calling user is determined based on the initiated Invite request. The embodiment of the invention also discloses a color printing business processing device.

The invention relates to a device of an OLED display field, and in particular relates to a high-contrast OLED (Organic Light Emitting Diode) display device based on a volume holographic principle. Aiming at the problems that the device contrast is reduced in ambient light and the imaging quality is influenced because of the reflection caused by the structure of the OLED device, the invention provides an idea that a light guide layer formed by using the volume holographic principle is combined with the OLED device, and the incident ambient light within a certain angle range is guided to an invisible range, so that the contrast of the device is prevented from being influenced by the ambient light which enters the OLED and generates reflection.

The invention provides a system and method for backing up and displaying backing-up auxiliary information of an automobile and the automobile. The system comprises an entertainment system module, a reversing auxiliary control module, an instrument module, a radar probe and a camera. The reversing auxiliary control module transmits a video signal to the entertainment system module through an LVDS signal; the reversing auxiliary control module transmits a radar detection signal to the entertainment system module and the instrument module through a CAN signal; the entertainment system module is used for processing the reversing auxiliary signal and displaying the reversing auxiliary signal on the display screen according to HMI definition; the entertainment system module sends first state information to the instrument module through a CAN signal; the instrument module receives the first state information, does not process the first state information and does not display the first state information; according to the system provided by the invention, the driving safety is improved by adding backup display of the reversing auxiliary information; implementation of the scheme does not relate to change of hardware and can be achieved only through software optimization, the cost is low, and the period is short; and a reverse backup display function may be designed and defined.

The invention discloses an excavator oil consumption display control system, a control method thereof, and an excavator comprising the excavator oil consumption display control system and the control method, and belongs to the field of excavator oil consumption control. The excavator oil consumption display control system comprises a flow sensing device, an analog-digital converting device, a control device and a display device, wherein the flow sensing device is installed at an oil spraying nozzle of a motor and is connected with the analog-digital converting device; the analog-digital converting device is connected with the control device through a CAN (controller area network) bus; and the control device is connected with the display device through a CAN bus. The control method of the excavator oil consumption display control system comprises the steps of displaying instantaneous oil consumption, displaying accumulative oil consumption and displaying loading accumulative oil consumption. The technical scheme has the advantages as follows: only the flow sensing device is additionally arranged in the conventional excavator oil consumption display control system, and a fuel oil pipeline is not improved; signals are transmitted through the CAN buses, so that the anti-jamming capability of the excavator oil consumption display control system is strong; and through calculation of a control device of the excavator, the instantaneous oil consumption, the accumulative oil consumption and the loading accumulative oil consumption can be calculated.

The invention relates to a common-port transmission method for SV direct mining and GOOSE messages, and belongs to the technical field of relay protection for intelligent substations in electric power systems. According to the transmission characteristics of SV direct sampling and GOOSE messages, the present invention, on the basis of ensuring the accuracy of SV sending time, time-division multiplexes the transmission channel, and transmits and receives GOOSE messages between two frames of SV messages, and according to The specific project configuration file dynamically calculates the number of GOOSE frames inserted between two frames of SV messages, maximizes the use of the transmission bandwidth of the channel, shortens the transmission delay of GOOSE signals, and utilizes the message receiving mechanism of the Ethernet controller to communicate with the FPGA through the FPGA. The resampling time stamp confusion problem caused by the SV and GOOSE packets that the Ethernet controller cannot recognize. Moreover, the GOOSE transmission delay of the present invention is small, does not involve hardware modification, simple software processing, high reliability, easy implementation, and can be widely popularized.

The invention provides a low-voltage battery power-on control method and device of an electric vehicle and the electric vehicle, and relates to the field of power-on processing of the low-voltage battery of the electric vehicle. The low-voltage battery power-on control method of the electric vehicle includes: obtaining the performance degradation judgment result of the previous power-on cycle of the current power-on cycle of the low-voltage battery and the wake-up times N of the controller in the power-on process of the low-voltage battery i ; According to the performance degradation judgment result and the wake-up times N i , determining the low-voltage power-on mode of the current power-on cycle of the low-voltage battery; acquiring the performance degradation judgment result of the low-voltage battery when the low-voltage battery is powered on according to the low-voltage power-on mode in the current power-on cycle and the wake-up times of the controller . In the embodiment of the present invention, the stability and smoothness of the output voltage during the power-on process of the low-voltage battery are ensured through the detection of the performance degradation of the battery and the wake-up of the controller in stages, thereby ensuring a better driving experience.

The invention discloses a high-voltage interlocking fault detection method and device and an automobile. The method comprises the steps of acquiring a first voltage signal through a first port of a high-voltage interlocking fault detection circuit, and acquiring a second voltage signal through a second port; filtering the first voltage signal to obtain a first filtering signal, and filtering the second voltage signal to obtain a second filtering signal; calculating a first fluctuation parameter according to the first filtering signal, and calculating a second fluctuation parameter according tothe second filtering signal; determining a first fault judgment threshold value according to the first fluctuation parameter, and determining a second fault judgment threshold value according to thesecond fluctuation parameter; performing high-voltage interlocking fault detection and judgment on the first port according to the first fault judgment threshold, and performing high-voltage interlocking fault detection and judgment on the second port according to the second fault judgment threshold; and if the first port has the high-voltage interlocking fault and / or the second port has the high-voltage interlocking fault, judging that the vehicle has a high-voltage interlocking fault. According to the invention, the problem of fault false alarm caused by electromagnetic interference is solved.

The invention provides a permanent magnet synchronous motor fault detection method, system and automobile, and relates to the field of automobile fault detection. The permanent magnet synchronous motor fault detection method includes: when the rotational speed of the permanent magnet synchronous motor to be detected is zero and the vehicle is in an active discharge process, periodically estimating the first output torque of the permanent magnet synchronous motor according to a preset control cycle ; Carry out band-pass filtering on the first output torque to obtain the second output torque; calculate the torque fluctuation coefficient in the detection period according to the second output torque; judge whether the permanent magnet synchronous motor to be detected is A rotor position zero offset fault exists. The above solution detects the fault of the zero point deviation of the rotor position of the permanent magnet synchronous motor when the vehicle is actively discharging and the motor speed is zero. The detection process will not interfere with the normal driving of the vehicle; Changes to vehicle propulsion system hardware.