56results about How to "Reduce cost and power consumption" patented technology

The invention belongs to the field of communication technology and provides a method and system of three-dimensional video call. The method comprises: a step of call connection establishment, wherein three-dimensional video call connection is established between a calling terminal and a called terminal; a step of image information conversion, wherein the calling terminal uploads the acquired first two-dimensional image information to at least one image processing server, and the called terminal uploads the acquired second two-dimensional image information to at least one image processing server; and a step of image information display, wherein the image processing server converts the first two-dimensional image information and the second two-dimensional image information into the first three-dimensional image information and the second three-dimensional image information respectively, sends the first three-dimensional image information to the called terminal to display, and sends the second three-dimensional image information to the calling terminal to display. Through the invention, the quality and speed of the three-dimensional video call of the terminal are improved, and the energy consumption of the terminal is reduced.

The invention provides a shifting register unit and a driving method thereof, a scanning drive circuit and a display device. The shifting register unit comprises an input end, an output end, a reset end, a first noise-amplifying end, an output drop-down module, an input module, an output module, a reset module and a first noise-amplifying module, wherein the input module, the output module, the reset module and the first noise-amplifying module are connected to a first node; the input module is used for raising the voltage of the first node under the control of a signal received by the input end; the reset module is used for lowering the voltage of the first node under the control of a signal received by the reset end; and the first noise-amplifying module is used for releasing the noise voltage of the first node to the first noise-amplifying end under the control of a third clock signal, and used for disconnecting the electric connection between the first noise-amplifying end and the first node when the voltage of the first node is raised. According to the invention, the stable output of removed noise jamming of GOA units can be realized by relatively less circuit components.

A DPSK optical modulation signal receiving device comprises a fiber decoder to demodulate DPSK optical modulation signals and output demodulated complementary optical signals, a photoelectric detector to converter the complementary optical signal demodulated by the fiber decoder into electric signals, a limiting amplifier to receive the electric signal output by the photoelectric detector and amplify the electric signal, a peak value detector to detect peak value of the amplified electric signal, a time delay control module connected between the fiber decoder and the peak value detector to control time delay of the fiber decoder while the peak value detector fails to find out peak value of the electric signal amplified by the limiting amplifier and a power combiner to combine power of the amplified electric signal output by the limiting amplifier. The present invention can reduce cost and power consumption of optical transmission system terminals, lessen terminal size and realize self-adapting demodulation to DPSK optical modulation signals under conditions of failing to acquire a balanced differential receiving set.

The invention discloses a method and a device for decoding a BTM (Balise Transmission Module) message, and a train control system based on a balise. The method comprises the steps of: respectively buffering two paths of preprocessed message data sent by the balise; then, sequentially selecting data with fixed length from the two paths of message data, and checking and calculating; respectively aligning message headers of the two paths of message data; respectively carrying out effective character check, replacement, descrambling and first character restoring to obtain two paths of user data; and finally, judging whether the two paths of user data are same or not, if yes, decoding successfully. In the embedment, the data with fixed length is checked by adopting 11-bit concurrent operation bit width when decoding; and for long code messages, one message is checked by only using 103 clock periods, i.e. the error detection is carried out on one long code message under 100MHz clock by only needing 1.03mu s which is far less than the time (654.48kbs, about 1.77mu s) of sending one message bit.

In an optical scanning device, a resin lens having a power that is an inverse (negative) power of a scanning lens is implemented in an optical system placed before a deflector so that a change in beam pitch caused by environmental temperature change can be prevented even when a resin lens is used as the scanning lens. To realize optical scanning using this device, a bundle of rays emitted from a plurality of light sources is coupled into a desired state by a coupling lens, after which the bundle of rays is incident on a resin lens. The surface of incidence of this resin lens has a spherical surface configuration with a negative power, and the exit surface of this resin lens has a cylindrical surface configuration with a negative power only in the sub scanning direction. Then, the bundle of rays passes through a resin lens that has a negative power only in the sub scanning direction and then enters a glass toroidal lens. A light deflector deflects the bundle of rays from the toroidal lens and the deflected bundle of rays is incident on a third optical system that compensates for a field curvature in each of the main scanning direction and the sub scanning direction, and focuses the bundle of rays onto a surface to be scanned while securing a desired beam pitch in the sub scanning direction.

The invention discloses a real time panoramic live broadcast system and method. The system comprises a panoramic camera lens module, an FPGA (Field Programmable Gate Array) chip, a microphone, a videoprocessing chip and a communication module, wherein the panoramic camera lens module is used for acquiring video data; the FPGA chip is connected with the panoramic camera lens module to receive thevideo data acquired by the panoramic camera lens module, and perform image splicing processing on the video data; the microphone is used for acquiring the audio data; the video processing chip is connected with the FPGA chip and the microphone respectively, and used for receiving audio data and the video data being subjected to the image splicing processing and performing compression coding on theaudio data and the video data respectively to encapsulate the audio data and the video data into a multimedia stream file including standard formats of video and audio; and the communication module is connected with the video processing chip, and used for pushing the multimedia streaming file to realize live broadcast. Through adoption of the real time panoramic live broadcast system and method,parameters of live broadcast image resolution, code rate and the like can be set adaptively according to a protocol of a live broadcast platform; secondary transcoding does not need to be performed through a panoramic live broadcast platform server; and time delay in a live broadcast process is reduced greatly.

The invention provides a down-going synchronous monitoring device and method for mobile terminal and its application. Firstly, according to the received data, it estimates the barycenter of channel impact response sequence, compares barycenter estimation value with the barycenter value in synchronous state, judging if the barycenter deflection is greater than some threshold value to determine if the current synchronous deflection belongs to the range able to be adjusted by the down-going synchronous adjustment tracking algorithm. Its effects: it can effectively monitor the status of down- going synchronization of the receiver in the data receiving course and gives an alarm to synchronous adjustment failure possibly occurring, thus effectively avoiding the reduction of system communication quality, even communication interruption.

It is an intelligent traffic microwave infrared mixed short-distance data transmission system, which is composed of matching electron apparatus, such as microwave infrared mixed load apparatus, traffic single lamp self-adapting management apparatus, traffic information sending apparatus with microwave road apparatus, traffic peccancy process apparatus, move electron policeman, public vehicle real time information collection and display apparatus, traffic flow inspection and control apparatus, parking and charging management apparatus without person, non-stop charging road apparatus and traffic jam charging apparatus. This system ensures the accurate data transmission.

The invention provides an airborne multispectral video image collection and processing method which is characterized in that spectrum marking and spectrum identification are respectively introduced in airborne video image collection and processing phases, self-adaptive perception with regard to different spectrums is achieved, and automation of the whole work process is realized. In the airborne video image collection phase, a rotary band-pass filtering sheet is added in front of a photoelectric imaging system to generate specific character codes from spectrum information according to a definition rule set in advance, and the collected image information and the character codes referring to the spectrum information are packaged and then are output in a certain video format; and in the airborne video image processing phase, the received video signals are unpackaged, the video signals are decomposed into the corresponding image information and the character codes referring to the spectrum information, and the character codes are identified according to the definition rule set in advance, the real meaning of the referred spectrum information is recovered, and an image processing module selects a corresponding algorithm for image processing.

The invention discloses an MOS pipe overcurrent protection circuit. The characteristic that a connection voltage VDS of an MOS pipe generates voltage drop when overcurrent occurs on the MOS pipe is utilized to judge whether the overcurrent occurs on the MOS pipe or not. According to the specific judgment process, after the MOS pipe is connected, if the connection voltage VDS is stable, it is judged that the MOS pipe is in normal run; if the connection voltage VDS of the MOS pipe is raised, it is judged that an overcurrent fault occurs on the MOS pipe. Compared with a traditional MOS pipe overcurrent protection circuit, the characteristic that the connection voltage VDS of the MOS pipe generates the voltage drop is utilized in the MOS pipe overcurrent protection circuit, the use of a current sampler and the like with high cost and high power is avoided, and the power consumption and cost of the protection circuit are drastically lowered.

The invention provides an undervoltage-overvoltage protection device which comprises an overvoltage detection circuit, an undervoltage detection circuit, a conversion circuit and a switch element, wherein a trigger signal is generated after an input of the overvoltage detection circuit, higher than a first predetermined threshold is delayed, and a single-phase line sampling voltage is coupled to the input; the undervoltage detection circuit is used for generating an undervoltage indication signal when detecting that the line sampling voltage is lower than a second predetermined threshold; the conversion circuit is used for converting the undervoltage indication signal into a pseudo overvoltage output higher than the first predetermined threshold, and the pseudo overvoltage output is coupled to the input of the overvoltage detection circuit in a manner of being subjected to or operation together with the line sampling voltage; the switch element is conducted in response to the trigger signal, so that a tripping action is performed by a trip coil connected with the switch element.

The embodiment of the invention provides a three-dimensional head-related impulse response data compressing method based on canonical multi-decomposition. The method comprises the steps that a processor performs canonical decomposition on a three-dimensional head-related impulse response data set to obtain three two-dimensional matrixes; the processor initializes the three two-dimensional matrixes; the processor iterates and updates the three initialized two-dimensional matrixes to obtain coefficient matrixes corresponding to the three two-dimensional matrixes; the processor calculates the reconstruction approximation degree of the three iterated two-dimensional matrixes; the processor judges whether an absolute value of difference between the two reconstruction approximation degrees, obtained by two adjacent iterations, of the three two-dimensional matrixes is smaller than 10<-4>; if so, the processor stops iteration and stores the three two-dimensional matrixes in a local cache, and otherwise, the processor returns to the third step until the iteration is completed. According to the method provided by the embodiment of the invention, the problem that an HRFT (Head Related Transfer Function) database is high in storage consumption is solved, and the power consumption and the cost of a chip used in practical application are reduced.

The invention discloses a virtual reality panoramic video acquisition device, which comprises a camera A, a camera B, a camera C and a camera D, wherein the camera A, the camera B, the camera C and the camera D are connected with a 360 DEG panoramic host. A design of camera analog signal CVBS input-digital processing conversion-digital display screen connection is directly adopted, the image quality is greatly improved, the cost and the power consumption are reduced, the efficiency is improved, the product is simpler, and the quality and the stability are improved correspondingly. The four cameras are arranged on a base, a 360 DEG rotating disc is arranged on the base, a spherical cover is arranged outside the rotating disc, four 180 DEG rotating rods are arranged circumferentially on the spherical cover, and the cameras are arranged at the end parts of the four rotating rods. The virtual reality panoramic video acquisition device has the advantages that the structure is simple; the photographing angle is wide; an alarm is given in the case of an emergency; and remote monitoring can be carried out.

The invention relates to a node deployment and positioning method for patrol inspection of an unmanned aerial vehicle (UAV) in an ecological environment, which comprises the following steps: airdropping a plurality of node sensors to a corresponding preset airdrop area respectively by the unmanned aerial vehicle through navigation system navigation; and positioning each node sensor which is airdropped through using the unmanned aerial vehicle as an anchor node. The method has high positioning accuracy, and the formed wireless sensor network does not require to re-set the anchor node and carryout positioning, thus saving cost and power consumption.

The invention belongs to the technical field of vent valve banks of air compressors and particularly relates to a self-unloading one-way valve type cylinder head and valve plate assembly used on a cylinder port of the air compressor. The self-unloading one-way valve type cylinder head and valve plate assembly comprises a valve plate, wherein an air inlet and a vent hole are formed in the middle part of the valve plate, an inlet valve sheet assembly which is used for controlling unidirectional communication of the air inlet is arranged on the lower side of the valve plate; the vent hole is in threaded connection with a one-way valve; an unloading hole is formed in the valve plate; and an unloading valve is fixed on the unloading hole and is in threaded connection with the unloading hole. According to the invention, the one-way valve is in threaded connection with the vent hole on the valve plate, an integral and straight-through design of the vent valve bank and the one-way valve is adopted, and meanwhile, the one-way valve is directly and tightly screwed on the vent hole of the valve plate, so that simple, safe and reliable cooperation is achieved; and when an aerodynamic thrust on the lower side of the valve plate is less than a spring force of the one-way valve, the one-way valve is closed, and both the power consumption and the cost of the air compressor applying the self-unloading one-way valve type cylinder head and valve plate assembly can be reduced.

A full-T cross apparatus and method are provided. The full-T cross apparatus includes an input module, which includes multiple input channels; and multiple output modules, each of which includes an output channel, an output control module, and multiple data storage modules. Each of the multiple data storage modules is corresponding to each of the multiple input channels of the input module. The multiple output modules are configured to receive service data from the multiple input channels according to the output channels corresponding to the service data, and send the service data according to output time slots corresponding to the service data. In this way, the chip size is reduced to some extent, and further, the costs and power consumption of the chip are reduced.

The invention discloses a multi-signal input and output processor. By adopting the multi-signal input and output processor, a plurality of signals are processed in a centralized way by making signal optimization, processing, caching circuits and so on in one microprocessor chip through the multiplexing mechanism, thus improving the multiplex property of signals and reducing the cost and the power consumption. In addition, a user just needs one terminal unit to send and receive a plurality of signals. Accordingly, the multi-signal input and output processor is used simply and conveniently, which is very easy to be used and experienced comfortably by users. In addition, the input and output processor just needs one protocol to communicate a plurality of signals with one unit. Accordingly, software is implemented simply.

The invention discloses a mobile robot positioning method. The method comprises the following steps: deploying Bluetooth beacons, collecting radio signal strength feature data and forming a feature data matrix, calculating distances between a to-be-positioned point and four beacons, calculating (xw, Yw), calculating the similarity between the signal strength feature data and the feature data in the set, calculating (xs, ys), and merging to obtain a final estimated location. The mobile robot positioning method disclosed by the invention has the following beneficial effects: neither additionalexpensive equipment nor clock synchronization is required, so the power consumption and the cost are lower, and the robustness is relatively strong.

The invention discloses an equipment side and host side communication method. The equipment side and host side communication method comprises the following steps that (1) a host side transmits a communication link establishing request to an equipment side, and the equipment side accepts the communication link establishing request to establish a communication link which is a bluetooth audio channel communication link; (2) the equipment side detects whether a sensor produces new data, and if so, packs sensor data in a format of audio channel data and transmits the sensor data to the host side through the communication link; (3) the host side receives and unpacks the sensor data sent by the equipment side, processes and analyzes the unpacked sensor data, and then outputs processing results. The equipment side and host side communication method can reduce the cost and power consumption of the equipment side to enhance the market competitiveness and the user experience of wearable equipment, and through sensor data transmission via bluetooth audio channels, can meet the requirements on speed and timeliness.

The invention discloses a design method of a full-fixed-point neural network. The method comprises the following steps of designing a neural network framework, and selecting a saturation activation function as a neural network activation function; selecting an initial overall fixed point bit width of the data according to an application scenario of the neural network; determining an initial decimal part bit width and an initial integer part bit width according to the precision requirement and the data characteristics of the neural network; carrying out binary conversion on the decimal part andthe integer part; taking the converted fixed point format data as input, carrying out neural network training, and recording a training result; Recording a training test result; and repeating the step 2 to the step 6 until the overall fixed-point bit width, decimal bit width and integer bit width meeting the requirements are found to serve as the final fixed-point architecture of the neural network. According to the present invention, the design of the neural network is calculated by adopting the fixed point number, the occupied resources are few, and the power consumption and the cost are low.

The embodiment of the invention relates to a data transmitting method and device for a base station, a data transmitting method and device for narrowband user equipment and a data receiving method and device for the narrowband user equipment. The data transmitting method for the base station comprises the steps of carrying out time domain-frequency domain transformation processing on data signals which are about to be sent to the narrowband user equipment; and carrying out orthogonal frequency division multiplexing processing on the data signals processed through time domain-frequency domain transformation processing and the data signals which are about to be sent to broadband user equipment, thereby sending the data signals. According to the scheme provided by the embodiment of the invention, only pure time domain narrowband processing is carried out at a narrowband user equipment side, so the narrowband user equipment is simplified, and the cost and power consumption are reduced. Moreover, narrowband and broadband waveform aggregation is realized, the spectrum efficiency of a whole system is improved. Due to high demands of machine type communication equipment for the cost and power consumption, the method and the device are relatively applicable to machine-to-machine communication.

The invention relates to an adaptive-radar ratio method based cantilever micro-nano microwave detection and demodulation system-on-chip which mainly comprises a six-port cantilever coupler, a microwave frequency detection module, a microwave phase detection module and a microwave power detection and demodulation module. The adaptive radar consists of an antenna, a receiving and transmitting conversion circuit, an MEMS (micro-electromechanical systems) microwave detection and demodulation integral system-on-chip, a signal storage unit, a signal analyzer, a microwave signal reconstruction unit,a microwave signal modulator and a microwave signal power amplifier. As an indirect-heating microwave power sensor utilizes a polysilicon nanowire cluster to form a thermocouple arm, the thermal conductivity is lower than that of the conventional materials, high thermoelectric conversion efficiency is achieved, the flexibility of the microwave detection system can be improved greatly, simultaneously synchronous detection of power, frequency and phase of microwave signals and demodulation of modulated signals can be completed, and thus, the adaptive-radar ratio method based cantilever micro-nano microwave detection and demodulation system on chip is implemented.

The invention discloses a physical keyboard input system and a keyboard input method thereof. The physical keyboard input system comprises a mobile terminal and a physical keyboard, and the physical keyboard is arranged on a touch screen of the mobile terminal in a covering mode to be used for converting first touch information that a user applies on keys into second touch information that the user applies on the touch screen; and the mobile terminal comprises a detection device, the touch screen, a touch screen control chip and a processor, wherein the detection device, the touch screen and the touch screen control chip are all connected with the processor. According to the physical keyboard input system and the keyboard input method thereof, by directly arranging the physical keyboard onthe touch screen of the mobile terminal in the covering mode, the purpose of conducting text message input by physical keys is achieved; and in addition, the physical keyboard does not need to be driven by being connected with a power supply, therefore, the cover and play effect is achieved, and the cost and power consumption of the mobile terminal are reduced.

The invention belongs to the technical field of image sensing and integrated circuits, and particularly relates to a sensing, storing and calculating integrated circuit structure for realizing positive and negative weight calculation in pixels. According to the circuit, a positive and negative weight selection unit module is used for shunting induced current generated by a CMOS active pixel unit module during illumination, then a summing and differencing operation circuit module is used for operating and converting the current, and finally a voltage sampling circuit module is used for periodically sampling voltage signals. Compared with a traditional in-memory calculation circuit, the sensing, storing and calculating integrated circuit structure for realizing the positive and negative weight operation based on the pixels utilizes a CMOS active pixel structure to realize sensing, uses a positive and negative weight selection tube and a 6T SRAM as storage and an operational amplifier as a calculation unit, and integrates sensing and in-memory calculation, the sensing data calculation speed of the circuit can be greatly improved, the integration level is high, the structure is simple, and the power consumption is low.