39results about How to "Extended transmission length" patented technology

In one form of the present invention, there is provided a fiber optic communication system comprising: an optical signal source adapted to receive a base binary signal and produce a first signal, said first signal being frequency modulated; and an optical spectrum reshaper adapted to reshape the first signal into a second signal, said second signal being amplitude modulated and frequency modulated; characterized in that: the frequency characteristics of said first signal, and the optical characteristics of said optical spectrum reshaper, being such that the frequency characteristics of said second signal are configured so as to increase the tolerance of the second signal to dispersion in a transmission fiber. In another form of the present invention, there is provided an optical transmitter comprising: a frequency modulated source for generating a first frequency modulated signal, and an amplitude modulator for receiving the first frequency modulated signal and for generating a second amplitude and frequency modulated signal. In another form of the present invention, there is provided a method for transmitting an optical signal through a transmission fiber comprising: receiving a base binary signal; operating an optical signal source using the base binary signal to produce a first signal, said first signal being frequency modulated; passing the frequency modulated signal through an optical spectrum reshaper so as to reshape the first signal into a second signal, said second signal being amplitude modulated and frequency modulated; the frequency characteristics of said first signal, and the optical characteristics of said optical spectrum reshaper, being such that the frequency characteristics of said second signal are configured so as to increase the tolerance of the second signal to dispersion in a transmission fiber; and passing the second signal through a transmission fiber. In another form of the present invention, there is provided a method for transmitting a base signal, comprising: using the base signal to produce a frequency modulated signal; and providing an amplitude modulator for receiving the frequency modulated signal and for generating an amplitude and frequency modulated signal.

A high-frequency micro-strip line for transmitting a high-frequency wave for a wireless LAN system has a layered structure where, on a ground layer made of a conductive material, a dielectric layer made of a dielectric material and a signal line made of a conductive material are successively laid. The high-frequency micro-strip line further includes a patch antenna comprising a dielectric plate made of a dielectric material and a patch made of a conductive material, which are successively laid into a layered structure, the patch antenna being electrically connected to the signal line. A wireless-communication RF signal transmission device capable of being applied to such a line is also provided.

The invention is directed to a projection unit for a head-up display comprising an image generator and a first mirror and second mirror for optical imaging which are arranged in a housing one after the other in the light propagation direction in such a way that the beam path is folded twice. It is wherein one of the mirrors has a light-scattering surface shape, the other mirror h / as a light-collecting surface shape, and the two mirrors combined have a common focal point on the image generator.

A signal processing algorithm has been developed in which a filter function is extracted from degraded data through mathematical operations. The filter function can then be used to restore much of the degraded content of the data through use of any deconvolution algorithm. This process can be performed without prior knowledge of the detection system, a technique known as blind deconvolution. The extraction process, designated Self-deconvolving Data Reconstruction Algorithm (SeDDaRA), has been used successfully to restore digitized photographs, digitized acoustic waveforms, and other forms of data. The process is non-iterative, computationally efficient, and requires little user input. Implementation is straight-forward, allowing inclusion into all types of signal processing software and hardware.The novelty of the invention is the application of a power law and smoothing function to the degraded data in frequency space. Two methods for determining the value of the power law are discussed. The first method is by educated guess where the value is deemed a constant of frequency that ranges between zero and one. This approach requires no knowledge of the original data or the degradation and is quite effective. The second method compares the frequency spectrum of the degraded data to the spectrum of a signal with the desired frequency response. This approach produces a superior result, but requires additional processing.

An optical transmitter comprising:an optical source modulated with an input digital data signal so as to generate a first, frequency-modulated digital signal; andan amplitude modulator, modulated with the logical inverse of the input digital data signal, for receiving the first, frequency-modulated signal and generating a second, amplitude-modulated and frequency-modulated digital signal;wherein the optical source and the amplitude modulator are each configured so as to produce positive transient chirp.A method for transmitting a signal, the method comprising:generating a first, frequency-modulated digital signal by modulating an optical source with an input digital data signal; andproviding a second, amplitude-modulated and frequency-modulated digital signal by passing the first, frequency-modulated digital signal through an amplitude modulator while modulating the amplitude modulator with the logical inverse of the input digital data signal;wherein the optical source and the amplitude modulator are each configured so as to produce positive transient chirp.

The invention provides a non-insulation track circuit comprising a main track circuit and a small track circuit, wherein the main track circuit comprises a first transmitter, a first receiver, a first capacitance compensator, a second capacitance compensator and a first tuning zone; the small track circuit comprises a second transmitter, a second receiver and a second tuning zone; the first tuning zone and the second tuning zone both comprise first tuning units, second tuning units and hollow coils; the first capacitance compensator, the first tuning units, the hollow coils, the second tuning units and the second capacitance compensator are connected to the main track circuit in parallel; the first receiver in the second tuning zone is connected with the first tuning units, and the second transmitter is connected with the second tuning units; the first transmitter in the first tuning zone is connected with the first tuning units; the first tuning units and the second tuning units are all used for transmitting signals of the neighboring zones of a short circuit in the zones and presenting compatibility for the signals of the zones and form parallel resonance with loops of the tuning zones.

An optical transmitter comprising:an optical source modulated with an input digital data signal so as to generate a first, frequency-modulated digital signal; andan amplitude modulator, modulated with the logical inverse of the input digital data signal, for receiving the first, frequency-modulated signal and generating a second, amplitude-modulated and frequency-modulated digital signal;wherein the optical source and the amplitude modulator are each configured so as to produce positive transient chirp.A method for transmitting a signal, the method comprising:generating a first, frequency-modulated digital signal by modulating an optical source with an input digital data signal; andproviding a second, amplitude-modulated and frequency-modulated digital signal by passing the first, frequency-modulated digital signal through an amplitude modulator while modulating the amplitude modulator with the logical inverse of the input digital data signal;wherein the optical source and the amplitude modulator are each configured so as to produce positive transient chirp.

A liquid discharging apparatus includes a print head that discharges a liquid, a carriage that is mounted on the print head, a control signal generation circuit, a drive signal generation circuit, a first cable through which a drive signal generation control signal is transmitted to the drive signal generation circuit, a second cable through which a drive signal is transmitted to the print head, a control circuit substrate on which the control signal generation circuit is provided, and a drive circuit substrate on which the drive signal generation circuit is provided. The shortest distance between the control circuit substrate and the carriage is longer than the shortest distance between the drive circuit substrate and the carriage. The drive circuit substrate is provided at a position where a region in which the carriage moves and at least a part of the drive circuit substrate overlap each other.

The invention discloses an efficient and stable pure inorganic cubic phase perovskite solar cell and a preparation method thereof. Specific to the problem that a pure cubic phase crystal form CsPbI<3>thin film cannot be obtained in the prior art, a universal method for preparing a CsPbX<3> perovskite thin film by adding polyvinylpyrrolidone (PVP) to a perovskite precursor liquid is proposed; by virtue of the method, it is ensured that the CsPbX<3> perovskite thin film can maintain cubic phase crystal form stability in a normal temperature; and by applying the method to a perovskite photovoltaic cell, the stability and photoelectric conversion efficiency of the perovskite cell can be obviously improved.

The invention provides a communication method and device for internet of things and relates to the technical field of communication of internet of things. The method comprises the step of generating amessage by an acquisition terminal according to acquired data information, wherein data structure of the message contains a message length field, a message number field, a maximum message number field and a variable structure qualifier field; field length of the message length field is at least two bytes; the message number field is used for defining the position of the current message in a message sequence, and the maximum message number field is used for defining the maximum number of the message sequence; the variable structure qualifier field at least contains a version number, and the version number is used for identifying the current message version and judging whether the current message version is valid or not; and the acquisition terminal sends the message to a control terminal.The communication method and device which are provided by the embodiment of the invention can better meet and adapt to network data transmission length requirement, and working efficiency and accuracyof transmission are improved.

The invention discloses a networking method for a wireless home control network. The method is characterized by comprising the following steps: A. a plurality of relays are pre-arranged in the range of a home network system; B. a communication protocol between a home appliance and the relay is preestablished; C. a home gateway sends ID numbers of all home appliances of the home network system to the total relays; D. each relay is sequentially inquired in an ID broadcasting mode; and the home appliances in the relay controllable range are determined; E. the relay sends a result of the determined home appliances belonging to the relay controllable range to the home gateway; and F. the home gateway controls the home appliances in the relay controllable range through the relay. The invention provides the networking method for the wireless home control network and a system thereof which are used for effectively ensuring the transmission reliability of a control signal of the home control network.

A memory system system includes a single in-line memory module (SIMM) which contains a memory device and a signal transmission line connected between the memory device and a connection terminal, and a dual in-line memory module (DIMM) which contains two memory devices and a signal transmission line connected between the two memory devices and a connection terminal. A length of the signal transmission line of the SIMM is longer than a length of the signal transmission line of the DIMM. The load of the memory device of the SIMM is less than the load of memory devices of the DIMM, and the longer length of the signal transmission line of the SIMM increases a signal delay time of the SIMM to compensate for the different loads of the SIMM and DIMM memory devices. The longer length of the signal transmission line of the SIMM may further compensate for a signal transmission line connected between the first and second sockets which receive the SIMM and DIMM, respectively.

A method of controlling a transmission includes sensing an operation signal generated from an accelerator pedal sensor, performing a predetermined transmission in a predetermined transmission section from a current gear to a target gear, determining a change in the speed of the operation signal, controlling a constant value at which a release hydraulic pressure signal is maintained constant during the transmission in response to the change, controlling an increase slope of an engagement hydraulic pressure signal before the transmission is completed in response to the change, and controlling a decrease slope of the release hydraulic pressure signal before the transmission is completed in response to the change. A transmission system for performing a method of controlling a transmission is also provided.

The invention discloses a kitchen waste pipe chain transmission line and a kitchen waste treatment system using the kitchen waste pipe chain transmission line. The kitchen waste pipe chain transmission line comprises a conveying pipeline, a kitchen waste conveying pipe chain and at least one kitchen waste conveying pipe chain driving mechanism, the conveying pipeline is provided with at least onefeed inlet and at least one discharge outlet, the kitchen waste conveying pipe chain is arranged in the conveying pipeline and moves in the conveying pipeline, and the kitchen waste conveying pipe chain conveys the kitchen waste entering the conveying pipeline from the feed inlet to the discharge outlet, and the kitchen waste conveying pipe chain driving mechanism is arranged in the conveying pipeline and drives the kitchen waste conveying pipe chain to move in the conveying pipeline. The kitchen waste pipe chain transmission line has the beneficial effects that full-closed transmission is realized, the transmission length is long, horizontal or vertical transmission can be realized, the transmission capacity can be adjusted according to the pipe diameter, the speed and the chain disc distance, no blockage exists, and the energy consumption is low.

The invention relates to the technical field of oil well logging, and particularly relates to a two-way full-duplex high-speed downhole optical transmission system. A digital control logging system of the system is connected with a downhole optical transmission short section through an optical fibre logging cable; the optical fibre logging cable adopts 1-5 optical fibers; the downhole optical transmission short section, a logging headstall, a downhole data collection processing short section and a downhole logging instrument combination are orderly connected; the speed of the downhole optical transmission short section can be up to 1.25Gbps when a single cable is adopted to transmit, and 128-path analogue / digital models are supported at most; an optical fiber connector is made on a multi-core optical fiber and is connected with a laser emission terminal of a downhole electric / optical conversion circuit assembly; the multi-core optical fiber and the downhole electric / optical conversion circuit assembly form two-way communication, and the tail part of the downhole optical transmission short section is connected with an optical fiber protection steel tube airtight detection valve. According the invention, high downhole transmission speed and large transmission length are achieved, and the defects of low downhole transmission speed and small transmission length in the existing downhole transmission system are overcome.

The invention provides an Internet of Things communication method and apparatus and a method for realizing Internet of Things communication, and relates to technical field of Internet of Things communication. The method comprises the following steps: a collection end generates a message according to collected data information, wherein the message includes a message length field and the field length of the text length field is at least two bytes; and the collection end sends the message to a control end. According to the embodiments of the invention, the Internet of Things communication methodand apparatus and the method for realizing Internet of Things communication better meet and adapt to the requirements for network data transmission length and improve the transmission work efficiency.

The invention belongs to the field of toilet bowls, and relates to nanofilm-microorganism environment-friendly toilet bowl. The toilet bowl comprises a bowl body, a defecation body, a solid-liquid separator, an excrement treatment module, a urine treatment module, a water pump and a power supply module. The nanofilm technology tending to be mature is utilized for circulating treatment of urine, separation treatment is performed on urine and excrement in the use process, deodorization of excrement is enhanced, the maximum effectiveness of fertilizer is guaranteed by adding microorganisms, and power supply of the whole device is realized through a built-in power supply module without an external power source; the technical scheme of circulating water is adopted, flushing of the toilet bowl is realized through treatment of urine and storage of treated clean water, and no external water source is needed; a drying tube and an Archimedes screw are adopted for drying excrement, vacuum packingand sealing are performed on particle matter, and no external sewer is needed; the whole toilet bowl is of an integrated structure, and the placement position of the toilet bowl is not limited by thegeographical environment.

A method and apparatus for compensation of a chromatic dispersion through an optical compensation and an electronical compensation in optical communication. An optical communication method receives an optical signal, estimates a first transmission length based on a null component included in a frequency spectrum of the optical signal, optically compensates for a chromatic dispersion of the optical signal based on the first transmission length, estimates a second transmission length based on a null component included in a frequency spectrum of the compensated optical signal, and electronically compensates for a residual chromatic dispersion of the compensated optical signal based on the second transmission length.

The invention belongs to the field of toilets, and relates to nanomembrane environment-friendly toilet bowl. The nanomembrane environment-friendly toilet bowl includes a barrel, a toilet body, a solid-liquid separator, a fecal disposal module, a urine processing module, a water pump and a power supply module. The urine was recycled by using the mature nano-membrane technology, and separating the urine and the feces in the use process, strengthening the deodorization and sterilization of the urine, ensuring that the toilet bowl can be normally used under the environment of no external power supply and no water, and realizing the power supply of the whole device through the built-in power supply module without external power supply; Adopting the technical scheme of circulating water, the toilet can be flushed by treating the urine several times and storing the treated clean water without external water source; The drying pipe and Archimedes screw are used to dry the excrement, and the particulate matter is vacuum packed and sealed without external sewer. The whole invention is an integral structure, and the placement of the toilet bowl is not limited by the geographical environment.

A liquid discharging apparatus includes a print head that discharges a liquid, a carriage that is mounted on the print head, a control signal generation circuit, a drive signal generation circuit, a first cable through which a drive signal generation control signal is transmitted to the drive signal generation circuit, a second cable through which a drive signal is transmitted to the print head, a control circuit substrate on which the control signal generation circuit is provided, and a drive circuit substrate on which the drive signal generation circuit is provided. The shortest distance between the control circuit substrate and the carriage is longer than the shortest distance between the drive circuit substrate and the carriage. The drive circuit substrate is provided at a position where a region in which the carriage moves and at least a part of the drive circuit substrate overlap each other.

The present invention relates to the technical field of optical communication and provides a fiber stretching device and a fiber delayed scanning system. The fiber stretching device includes a telescopic rod, a motor that can drive the telescopic rod to stretch and retract, and a telescopic portion for winding a fiber. One end of the telescopic rod is connected with the motor, and the other end ofthe telescopic rod is connected with the telescopic portion and can expand or shrink the telescopic portion. The fiber is wound around the outer surface of the telescopic portion. The telescopic rodis driven by the motor to move, and then the telescopic portion is driven to move so as to stretch the fiber. Thus, the stretched length of the fiber can be increased and the transmission length of laser light in the fiber is further increased, thereby expanding an optical path scanning range.

The invention discloses a high-performance Germany-standard vehicle reversing video cable. The cable comprises a cable core, wherein the cable core is formed by twisting a data transmission cable and two power lines that are arranged in parallel up and down; a conductive PVC middle covering layer, a first shielding layer woven by an aluminium foil or copper, a tin-plated layer and an outer covering layer are arranged on the exterior of the cable core in sequence, wherein the data transmission cable comprises a cable core formed by two data lines and a ground wire, wherein the two data lines are arranged in parallel up and down and are twisted in pairs; and a second shielding layer woven by the aluminium foil or copper is directly arranged on the exterior of the cable core. According to the high-performance Germany-standard vehicle reversing video cable, the transmission length of the stranded wire is prolonged; a 100% shielding effect on the shielding layer is achieved, and the cable transmission precision and quality are improved; and meanwhile, the tin component is soft metal, so that the cable is suitable for use and deep processing.

The invention discloses a bridge type spliced conveying belt which comprises conveying belt bodies and fixing frames. Connector frameworks are fixedly installed at the tops of the fixing frames, and the interiors of the connector frameworks are rotatably connected with driving rollers through rotating shafts. Driving motors are fixedly installed at the rear ends of the tops of the fixing frames, and output shafts of the driving motors are in driving connection with the driving rollers. The right sides of the connector frameworks are fixedly connected with hinging devices, the right sides of the hinging devices are fixedly connected with connecting frameworks, and the front ends and the rear ends of the connecting frameworks are rotatably connected with driven rollers through rotating shafts. The driven rollers and the driving rollers are sleeved with the conveying belt bodies. According to the scheme, the connector frameworks are connected with the connecting frameworks through the hinging devices, and during use, connecting keels can be added according to the actual use condition, so that the conveying distance is adjusted; and the conveying angle can be adjusted through the hinging devices, so that bending in the conveying direction can be achieved.

The invention discloses a product boxing and stacking machine. The product boxing and stacking machine comprises a fixing base, a first installation frame and a second installation frame which are detachably connected to the fixing base, and a conveying assembly which is arranged on the first installation frame and the second installation frame, the conveying assembly comprises an assembling plate, a driving shaft, a first auxiliary shaft and a second auxiliary shaft as well as a conveying belt, wherein the driving shaft, the first auxiliary shaft and the second auxiliary shaft are rotationally connected to the assembling plate, the conveying belt sleeves the driving shaft, the first auxiliary shaft and the second auxiliary shaft, the driving shaft can be further connected to the assembling plate in an up-down sliding mode, the first auxiliary shaft can be connected to the assembling plate in a left-right sliding mode, the driving shaft is located between the first auxiliary shaft andthe second auxiliary shaft; the first auxiliary shaft, the second auxiliary shaft and the driving shaft forms an inverted triangular structure, a driving motor is further arranged on the assembling plate, and the driving motor is in linkage with the driving shaft. According to the product boxing and stacking machine, the conveying distance can be adjusted so that more applicable range can be increased, and the machine can be adapted to more installation places.

A quartz oscillating plate comprises a substrate having a notch. Two sides of the notch respectively have a first side-electrode and a second side-electrode. The first side-electrode receives an external signal. The external signal is transmitted along the perimeter of the substrate. The notch of the substrate can increase the length of the transmission path of oscillation energy. The present invention can improve the Q value of the quartz oscillator using the quartz oscillating plate and optimize the performance of the products using the quartz oscillator.

The invention provides a multilayer film triple frequency output mirror structure based on an F-P cavity, and the structure is characterized by sequentially comprising a substrate, a first reflectingfilm system, a spacing layer and a second reflecting film system from bottom to top. The basic expression is G / R1LR2 / A, wherein G represents a substrate material, R1 represents a first reflective filmsystem, R2 represents a second reflective film system, L represents a spacer layer, and A represents an incident medium. An F-P cavity structure is formed by two groups of reflecting film systems andthe spacer layer, so that a multi-beam interference effect is generated in the cavity, the interaction between fundamental frequency light and a nonlinear thin-film material is enhanced by regulatingthe intensity of the interference effect in the cavity and the types and the thicknesses of materials in the spacer layer, and triple-frequency efficient conversion output is realized. The method hasthe advantages that the physical scale is small, the nonlinear response output can be finely regulated and controlled, the frequency tripling conversion efficiency of the film-state material is improved, and the like.

The invention discloses an information transmission method for increasing the transmission length in a cable. The method comprises the following steps: transmitting signals of the transmission information are spread and modulated to high-frequency electromagnetic wave carriers for transmission in the cable; the transmission signals after transmission are demodulated and despreaded to generate a received signal of the transmission information. Based on the information transmission method, the invention also provides an information transmission system for increasing the transmission length in acable. The information transmission method and the system of the invention can carry a large amount of information. The anti-interference ability and anti-noise ability of the information transmissioncan be greatly improved, so that the transmission length of the information in the cable can be prolonged.