102results about How to "High transmission frequency" patented technology

An HGA includes a magnetic head slider with at least one thin-film magnetic head element, a metal suspension for supporting the magnetic head slider, signal trace conductors formed via an insulation material layer on the metal suspension, for transmitting signals of the at least one thin-film magnetic head element, and external signal connection pads formed via an insulation material layer on the metal suspension and electrically connected to the signal trace conductors. At least part of the metal suspension under the external signal connection pads is removed.

A door lock system for controlling access to an automobile includes at least one transmitter in the door of the automobile for transmitting a request signal, a portable device for transmitting a response signal having an ID code in response to the request signal, a receiver for receiving the response signal, and a controller for controlling a lock in the door based on an identity of the ID code. The transmitter and the receiver intermittently operate to respond to a user of the portable device.

An ink-jet printhead fabrication process and product that uses selectivity rate controlled etch techniques to produce trenches on the frontside of a silicon substrate to define ink feed channels and resistor support regions. Location and size of features is made independent of etch rate by providing a selective etch for the silicon trench etch steps that is greater than 10,000:1 for the silicon:oxide that defines ink feed channels and resistor support areas.

The invention discloses an inner groove porous strengthened boiling micro-channel structure, which includes a metal sintered felt formed by sintering metal powder and provided with uniformly-distributed particles, wherein a plurality of inner grooves are uniformly distributed in the metal sintered felt. The porous surface of the inner groove porous strengthened boiling micro-channel structure has excellent capillary characteristics, can keep the wall surface to be sufficiently damp, avoids the local scabbing and polymer deposit caused by hot spot and local drying, improves the heat transfer coefficient and critical heat flux density by adopting the porous structure for strengthened boiling heat transfer, and has excellent strengthened heat transfer effect.

An inkjet printing fluid composition including water and a water dispersible polyurethane additive of the general formula of (I)wherein Z is the central portion of a monomer unit that is the polymerization product of a diisocyanate; X1—Y1—X1 represents one or more soft segments wherein Y1 represents the central portion of a unit that is the polymerization product of a diamine or diol prepolymer having a molecular weight of greater than 300 Daltons; W is the central portion of one or more units containing an acid group; X2—Y2—X2 represents one or more hard segments wherein Y2 represents the central portion of a unit that is the polymerization product of a C2-C8 diol or diamine having a molecular weight of less than 250 Daltons; and X1, V and X2 can be the same or different and are an —O— or —N— atom; and further wherein the polyurethane additive has a weight average molecular weight of at least 6,000 Daltons and a sufficient number of acid groups to provide an acid number greater than 35, and the one or more X2—Y2—X2 hard segments are present at from 1 wt % to less than 13 wt % of the polyurethane additive. Also disclosed is a method for printing an inkjet image including I) providing an inkjet printing fluid according to the invention; and II) jetting the inkjet printing fluid in the form of ink drops onto a recording element to form a printed image.

An inkjet printing fluid composition including water and a water dispersible polyurethane additive of the general formula of (I)wherein Z is the central portion of a monomer unit that is the polymerization product of a diisocyanate; X1—Y1—X1 represents one or more soft segments wherein Y1 represents the central portion of a unit that is the polymerization product of a diamine or diol prepolymer having a molecular weight of greater than 300 Daltons; W is the central portion of one or more units containing an acid group; X2—Y2—X2 represents one or more hard segments wherein Y2 represents the central portion of a unit that is the polymerization product of a C2-C8 diol or diamine having a molecular weight of less than 250 Daltons; and X1, V and X2 can be the same or different and are an —O— or —N— atom; and further wherein the polyurethane additive has a weight average molecular weight of at least 6,000 Daltons and a sufficient number of acid groups to provide an acid number greater than 35, and the one or more X2—Y2—X2 hard segments are present at from 1 wt % to less than 13 wt % of the polyurethane additive. Also disclosed is a method for printing an inkjet image including I) providing an inkjet printing fluid according to the invention; and II) jetting the inkjet printing fluid in the form of ink drops onto a recording element to form a printed image.

A certain ECU transmits a reference message for requiring the other ECUs to transmit data. After transmission of the reference message, each of all the ECUs transmits priority information of its transmit message onto a communication bus, and then detects whether some priority information transmitted from the other ECUs has a higher priority than its own transmitted priority information. If there is detected no priority information of a higher priority than its own transmitted priority information, it transmits a message associated therewith, and then is prohibited to transmit data of the same priority until receiving a next reference message.

A method for printing an image with a printing system including the steps of multitoning image data to produce a multitoned image having a multitone resolution; providing a look-up table, wherein each look-up table entry specifies a number of dots of a first size and a number of dots of a second size; using the look-up table to expand the multitoned image data from the multitone resolution to a print-ready image having a printing resolution; and printing the print-ready image using a first array of dot forming elements for forming dots of a first size and a second array of dot forming elements for forming dots having a second size that is greater than the first size.

There is disclosed an apparatus newly including a handoff request additional transmission control function. According to the handoff request additional transmission control function, when a procedure shifts to a retransmission procedure of a handoff request message A, a usable sequence number (SEQ2) other than a sequence number (SEQ1) for use in transmission of the art message A is selected, Subsequently, the sequence number (SEQ2) is used to transmit the message A having the same content as that of the aforementioned message in a retransmission interval period of the message A in which the sequence number (SEQ1) is used.

The invention discloses an electronic white board with multiple common-frequency pens. A main control card of the electronic white board identifies a plurality of electronic pens and an eraser by judging the serial numbers of the common-frequency electronic pens and the eraser at different times, each electronic pen and the eraser have respective fixed serial number and work at the same frequency, and when the pens are in use, the colors of the pens can be determined without additionally selecting shortcut keys. Time sharing operation is performed on the electronic pens and the eraser, and each piece of equipment only works within respective time and does not emit a signal at other time. The emitting frequency of the electronic pens is the same as that of the eraser, the working frequencies of the electronic pens and the eraser are generated through a single chip microcomputer clock, the main control card judges the work of the electronic pens and the eraser at different times, and the working periods of the electronic pens and the eraser are synchronized through a reference signal transmitted by the main control card, so that the coordination of the work of the electronic pens and the work of the eraser is guaranteed. By the adoption of the electronic white board with multiple common-frequency pens, the requirement that a user can use over two electronic pens at the same time to write in different colors at the same time can be met.

The embodiment of the invention discloses an automatic control method for an airplane mode. The automatic control method is used for controlling whether mobile equipment enters the airplane mode and comprises the steps of obtaining the environment parameter information of the mobile equipment periodically, wherein the environment parameter information comprises the current signal strength of the mobile equipment and / or the altitude of the position where the mobile equipment is located; comparing the environment parameter information with a preset condition; switching the mode of the mobile equipment into the airplane mode when the comparison result meets the preset condition and lasts for a preset time period; otherwise, keeping the non-airplane mode of the mobile equipment. According to the automatic control method, the electric quantity of a mobile terminal can be configured in an optimizing mode, and injury to the health of users is lowered.

The invention provides a variable-frequency sampling system and a method thereof. The method includes: when there is no alarm event, capturing and uploading sensor data with low detection frequency in order to save storage resources and upload bandwidth resources; and after an alarm event occurs, capturing and uploading a sensor emitting an alarm and data of a related sensor thereof with high detection frequency in order to save related catastrophe data of a region with alarm to the maximum.

The present invention relates to a semiconductor device which provides a shortest possible connection between two semiconductor components 10a and 10b arranged in a manner lying opposite on a substrate 2. The two semiconductor components 10a and 10b are in each case arranged with their chip contact-connection regions 11a and 11b facing the substrate 2. A vertical through-plating device 20 connects the two chip contact-connection regions 11a and 11b.

The invention discloses an ultrahigh-frequency RFID tag digital baseband low-power-consumption system based on an EPC / C-1 / G-2 standard. According to the system, a power consumption management module is added and used for performing dynamic power consumption management, a gated clock is adopted to perform power consumption control on other modules, and corresponding module clocks are started up andshut down according to demands to lower power consumption. The system is divided into all the independent modules according to a UHF RFID protocol of the EPC / C-1 / G-2 standard and functions, a power consumption control unit is designed, the corresponding module clocks are started up and shut down according to the demands, and power consumption reduction is realized by use of an asynchronous counter, the gated clock, a Gray code, a parallel CRC calculation method and other methods.

The invention discloses a laser driving circuit and method and a laser radar system. The driving circuit comprises at least two charging energy storage circuits, at least two first switching elementsand a control circuit, wherein the output ends of the charging energy storage circuits are electrically connected with the first ends of the first switching elements in a one-to-one correspondence manner, the second ends of the first switching elements are electrically connected with a laser; the input ends of the charging energy storage circuits and the control ends of the first switching elements are electrically connected with the control circuit; the control circuit charges each charging energy storage circuit for a first preset time, and sequentially controls each first switching elementto be conducted for a second preset time; there is an interval of a third preset time between the charging start time of the subsequent charging energy storage circuit the conduction time of the corresponding first switching element; or the charging start time of each charging energy storage circuit is the same. The technical scheme of the invention improves the transmitting frequency of the laser under the premise of ensuring the pulse power, and solves the contradiction between the transmitting frequency and transmitting power of the laser.

A parking assist system for a motor vehicle is provided. The system comprises a device for assisting the driver of a vehicle 200 in the process of parking, with sensors 205a, 205b for detecting obstacles 208a, 208b in an environment of the vehicle 200, at least in an environment in front and in back of the vehicle 200; and a display for indicating the distance between the vehicle 200 and an obstacle 208a, 208b identified in the environment. The system is characterized in that the display encompasses a first means 201, with which the distance between the vehicle 200 and an obstacle 208a identified in front of the vehicle 208a can be displayed on a windshield 202 of the vehicle 200, and a second means 203, with which the distance between the vehicle 200 and an obstacle 208b identified in back of the vehicle 200 can be displayed on a rear window 204 of the vehicle 200.

The invention relates to a cable with multiple pairs of parallel symmetrical axes. The cable with the multiple pairs of parallel symmetrical axes comprises 4-32 pairs of parallel symmetrical axis core line and outer sleeve layers wrapping the parallel symmetrical axis core line, and each outer sleeve layer comprises a protective sleeve layer, a woven layer, an aluminum foil shielding layer and a polyester wrapping tape layer from outside to inside. Each parallel symmetrical axis core line pair comprises two center lines which are arranged in parallel and an electric drainage wire, the aluminum foil shielding layer wraps each parallel symmetrical in a winding mode, and each center wire comprises a foam insulating layer and a silver-plated copper center conductor which is arranged in the center of the foal insulating layer and squeezes and wraps the foam insulating layer. The cable with the multiple pairs of parallel symmetrical axes has the advantages that improvement of the transmission rate of signals is achieved, the number of transmission passageways is increased from the current 1 or 2 to 4-32, the overall performance of anti-electromagnetic interference can be greatly improved, cross talk indicators inside the line pairs or among the wire pairs can be effectively reduced due to independent shielding of the line pair and two-layer composite shielding outside an overall cable core, and the stable high-frequency transmission performance of products can be ensured.

The invention provides a reliable data transmission system based on multi-channel fusion, the system comprises a source end and a destination end, and the source end comprises a channel link monitoring device, a channel multiplexing device, a channel fusion subpackaging device and a channel fusion confirmation device; the destination end comprises a channel fusion response device; Wherein the channel link monitoring device detects whether the communication state of a first channel is abnormal or not; If the first channel is abnormal, the channel multiplexing device selects a second channel tocontinue to transmit data, and the channel fusion subpackaging device performs subpackaging operation on the data to perform data transmission; After the source end sends data through the second channel, the channel fusion response device of the destination end receives and feeds back the data; And the channel fusion confirmation device confirms a data transmission result according to the feedback. According to the invention, a multi-channel transmission mechanism is optimized in real time, the real-time performance of data transmission in a multi-channel network is improved, and the reliability of data transmission is improved.

A wireless power transmitter includes a multi-mode drive circuit having a controllable resonant frequency. The multi-mode drive circuit is controlled to have a first resonant frequency to drive wireless power transmission at a first transmit frequency. The multi-mode drive circuit is also controlled to have a second resonant frequency higher than the first resonant frequency to drive wireless power transmission at a second transmit frequency higher than the first transmit frequency.

The invention discloses a 2.4 GHz handheld nonlinear node detector, comprising a host, a rotating shaft and a handle. The host comprises a transmitter, a 4.8 GHz receiver, a 7.2 GHz receiver, a controller, a display screen, a lowpass filter, a 4.8 GHz bandpass filter, a 7.2 GHz bandpass filter, a 2.4 GHz antenna, a 4.8 GHz antenna and a 7.2 GHz antenna. The detector has the advantages that the detector is small and compact in size and light and convenient in usage and has a detection result judgment function. The transmitting frequency of the detector can be improved to 2.4 GHz. The detection performance is greatly improved. The detector has pulse transmitting and automatic power adjusting functions. The power consumption can be reduced, and the detection effectiveness also can be improved. According to the detector, idle channels can be automatically searched, surrounding electromagnetic interference can be kept away, and the accuracy of detecting an electronic target is improved.

The invention discloses a small coaxial aircraft ejection device, which relates to the technical field of unmanned aerial vehicle flight. The device comprises an ejection shell and a bottom plate protection plate arranged at the bottom of the ejection shell. A spring energy storage assembly and an automatic unhooking mechanism are installed in the ejection shell. A positioning connection cone is arranged at the ejection connection part; the positioning connection cone is used for fixing the coaxial aircraft in an energy storage state, the spring energy storage assembly is used for compressingand storing energy of the positioning connection cone, the automatic unhooking mechanism can achieve automatic unhooking of the positioning connection cone, then the positioning connection cone is ejected out under the energy storage effect of the spring energy storage assembly, and ejection of the coaxial unmanned aerial vehicle is achieved. By arranging the energy storage ejection mechanism, kinetic energy is initially provided for the coaxial aircraft, the take-off speed of the coaxial unmanned aerial vehicle is increased, rapid reaction take-off and landing are achieved, and the device issuitable for rapid reaction flight in some special scenes and high in reliability.

The invention relates to a novel planar Gunn diode and a preparation method thereof. The novel planar Gunn diode comprises an insulating substrate and a channel layer which are arranged from bottom to top in sequence, as well as a first electrode part and a second electrode part which are arranged on the channel layer, wherein at least one of the first electrode part, the second electrode part and the channel formed by the first electrode part and the second electrode part is integrated; the electrode edge of the first electrode part and the electrode edge of the second electrode part are not parallel; at least two intervals exist between the electrode edge of the first electrode part and the electrode edge of the second electrode part, so that signals of multiple frequencies can be generated at the same time, on one hand, the novel planar Gunn diode can be applied to the fields of multifrequency radar, color terahertz imaging and the like requiring signal sources of multiple frequencies simultaneously, and on the other hand, by using the own frequency mixing effect of the novel planar Gunn diode, a high-frequency signal, of which the frequency is the sum of such signal frequencies can be generated, so that the transmitting frequency of a device is increased greatly.

A local oscillator signal generation circuit (150) for generating quadrature-related local oscillator signals comprises a source signal generator (153) arranged to generate a differential-mode source signal, a buffer stage (158) coupled to an output (156) of the source signal generator (153) and arranged to buffer the differential-mode source signal, and a quadrature generation stage (170) coupled to an output (168) of the buffer stage (158) and arranged to generate an in-phase local oscillator signal and a quadrature local oscillator signal from the buffered differential-mode source signal. The buffer stage (158) comprises a primary differential amplifier (159) having an input (162) coupled to an input (157) of the buffer stage (158), and a secondary differential amplifier (160) having an input (164) coupled to an output (163) of the primary differential amplifier (159) and an output (165) coupled to the output (168) of the buffer stage (158).

Disclosed is a bus arbitration method, comprising: in accordance with arbitration criteria, engaging in the arbitration of a presently received, and sent by an external device, bus access request and / or previously-stored bus access request, and storing the arbitration results; executing the stored arbitration results, and sending a corresponding arbitration response signal to the external device from which the bus access request and / or previously-stored bus access request are presently sent. Additionally disclosed is a bus arbitration device and a storage medium. Said method and device increase the transmission efficiency and circuit frequency of a bus, can satisfy high-speed interconnectivity requirements, and can be used in chips having relatively high bus throughput rates.

The invention discloses a prepaid wireless smart gas meter. The gas meter comprises a metering sensor unit, a valve control unit, an IC card read-write unit, a storage unit, a display unit and an RF module which are connected with an embedded processor, wherein the RF module mainly comprises an RF transceiver, a power amplifying circuit, an antenna matching circuit and an RF transceiving antenna; the power amplifying circuit comprises a signal receiving preamplification circuit, a signal transmitting preamplification circuit, a four-channel double-stage double-throw RF terminal analog switch and a four-channel double-stage double-throw antenna terminal analog switch; and the signal receiving preamplification circuit and the signal transmitting preamplification circuit are respectively connected between the RF terminal analog switch and the antenna terminal analog switch in parallel. The prepaid wireless smart gas meter can complete internetworking and overcome the defect that the gas operation and management mechanism is hard to realize management and regulation and control of all the gas users.

A server and a method of transmitting data thereof, and a mobile device and a sensing method thereof are disclosed. The sensing method includes receiving sensing data obtained according a user behavior pattern from at least one device, analyzing state information of the sensing data, and changing a user processing data according to an analysis result of state information of the sensing data.

The invention discloses an aerospace-used star quad communication cable and a manufacturing method thereof. The aerospace-used star quad communication cable comprises a cable core; and the cable core is sequentially coated with a wrapping layer, a shielding layer and a sheath. The aerospace-used star quad communication cable is characterized in that four core wires are paired and are subjected to star quad with a filling strip as a center to form the cable core; a multi-core inner conductor is wrapped with an insulated layer to manufacture each core wire; the insulated layer has a two-layer structure, the inner insulated layer is a microporous polytetrafluoroethylene thin film, and the outer insulated layer is a polytetrafluoroethylene green tape; the shielding layer has a silver-plated copper wire double-layer braided structure; and both the sheath and the filling strip are made of an ethylene-tetrafluoroethylene copolymer. The aerospace-used star quad communication cable provided by the invention can perform gigabit transmission, and has the advantages of high radiation resistance, high electromagnetic shielding performance, light weight, good flexibility, high temperature resistance, low delay, low attenuation, impact resistance and the like.

A transmission image data signal including: a coded data block obtained by performing an error correction coding on a sequence of pixel data pieces in input image data; and a representative pixel data pieces group containing three pixel data pieces corresponding to red, green, and blue, respectively, in the sequence of the pixel data pieces is transmitted to a driver in a display panel. The driver converts the sequence of the pixel data pieces obtained by performing an error correction on the transmission image data signal to pixel driving voltages and applies these voltages to the display panel. If pixels for one horizontal scanning line have an identical color, the driver performs no error correction. Instead, the driver converts the representative pixel data pieces group to pixel driving voltages and applies these voltages to the display panel.

The invention provides a probe card. The probe card comprises a space converter and a probe head. A plurality of metal pads and a plurality of metal-pad-free areas are formed on a first surface of thespace converter. The probe head is arranged on the first surface of the space converter. The probe head comprises an upper guide plate, a lower guide plate, a plurality of signal probes, a pluralityof grounding probes, a plurality of simulation probes, a plurality of metal layers and a plurality of metal opening areas. Each signal probe and each grounding probe penetrate through and protrude outof the upper guide plate and the lower guide plate so as to be electrically connected with the metal pads of the space converter respectively, each simulation probe penetrates through and does not need to protrude out of the lower guide plate, each simulation probe is electrically connected with each grounding probe, and the simulation probe is arranged in the metal-pad-free area of the space converter so as to improve test quality of the probe card.

The invention relates to an antenna apparatus of an identification system, especially relating to an RFID antenna system. The RFID antenna system comprises a built-in antenna which is provided at a mobile phone SIM card. The built-in antenna connects with an RFID reader-writer chip which is integrated on an SIM card body. An inner surface of a mobile phone shell is provided with an external antenna which is electrically connected with the built-in antenna. According to the invention, through setting the external antenna at the mobile phone shell, influence of a mobile phone cell on a signal is avoided, and quality of a transmitting signal and a receiving signal are enhanced; a dimension and a shape of a present mobile phone shell are fully utilized by the external antenna, and through ingenious structural design, enough magnetic field is generated to establish data communication with an electronic tag; through combination of the external antenna and the built-in antenna, high emission frequency is generated by the antennas, a high frequency signal has strong penetrability, and a read-write distance and communication quality between the reader-writer chip and the electronic tag are reinforced.