134results about How to "Less devices" patented technology

The present invention relates to a wireless home automation system having a controller for controlling a broad variety of functions via two ways communication with a plurality of devices. More specifically, the invention relates to an improved and flexible way of routing signals from a controller to a device which includes the building of various tables such as routing tables. The improved and flexible way of routing allows the user to reach any device within the network with a high reliability. According to the invention, a processing unit of a controller is adapted to instruct a first device to discover other devices within its range by transmitting a signal comprising a device table holding device identifiers of devices controlled by the controller. The devices in the system are adapted to, upon instruction, perform a discovery of other devices within its range by transmitting discovery signals addressed to each device in the device table received from the controller. The devices save the identifiers of the device which acknowledges the reception of the discovery signals in a list indicating which devices of the device table it can reach and which it can not reach. The controller can at any time collect the saved list from a device to build a routing table.

A keypad for telephones and the like, preferably mobile telephones. There is provided at least one actuating mechanism (1) for stepwise input of call symbols. There is provided an additional mechanism for confirming the respective stepwise selected symbols or this consists of the actual actuating mechanism, pressure on or bending of the actuating mechanism causing the selection of symbols to be carried out. The actuating mechanism may consist of the telephone housing in that the housing is divided into an upper part (5) and a lower part (4) which are rotatable relative to one another, by a wheel (1) that is rotatable relative to the housing, and that is provided with call symbols or interacts with a scale provided with call symbols, a sliding key which can be moved in a groove provided in the telephone housing or on a slide bar affixed to the housing, or one or more keys for moving a marker in a menu on a display device (3).

An adaptive equalizer apparatus with digital eye-opening monitor unit and the method thereof are provided. The apparatus comprises an equalizer unit, a sampling unit, and an eye-opening monitor unit. The equalizer unit equalizes a first signal to a second signal. The sampling unit over-samples the second signal and determines the logic status of the second signal according to the sampling data. The eye-opening monitor unit processes the sampling data and outputs a detecting signal according to the processing result. The detecting signal represents the adequacy of the parameters of the equalizer unit, and the equalizer unit determines whether to change its parameters according to the detecting signal.

The invention discloses a non-speed sensor slip speed-adjusting digital and intelligent speed-adjusting method and a system which comprises a motor, soft start equipment, a slip speed-adjusting, a slip power feedback and a programmable controller and is characterized in that: the slip speed-adjusting comprises a rotor rectifier, a chopper and a digital signal processor DSP1, exerts the dual-ring control of non-speed sensor speed measurement and the motor speed current, and transfers the slip energy to the electric energy; the slip power feedback comprises an inverter, a filter and a digital signal processor DSP2, exerts the dual-ring control of feedback circuit voltage current, and feedbacks the energy to a power net; the programmable controller exerts the whole system program control, and comprehensive fault and process. The invention is suitable for the common wire winding asynchronous motor and the inner-feeding wire winding asynchronous motor, and is characterized in using the low voltage device to control the medium voltage motor. Meanwhile, the invention has the advantages of simple circuit, good performance, perfect function, kind interface and simple and convenient operation.

The present invention discloses a multi-mode device and the realizing method. The multi-mode device comprises a multi-mode mobile phone card and the card groove, a card groove analog switch, an AT communication module, a signal decision module, a main control module and a main control radio frequency module, and a subordinate module and a subordinate radio frequency module; the AT communication module is arranged between the main control module and the card groove analog switch; the card groove analog switch is used to set the working mode of the card groove; the main control module is respectively connected with each function module, the card groove analog switch, and the signal decision module; the subordinate module is connected with the main control module through an asynchronous serial data bus line, which is used to work under a selectable working mode, to share each function module; the signal decision module is used to receive and judge the intensity of the received signal regularly polled by the main control module and the subordinate module, and feeds back to the main control module, to select the working mode of the multi-mode device. The main control module and the subordinate module adopt an integral setting in a stacking method. The multi-mode mobile phone card adopting a card with a number eliminates the inconvenience the multi-mold multi-card with multi-number for the user.

A novel power unit of a cascade unit comprises a DC voltage driver unit, a voltage lifting chopping part and an inverting part. The DC voltage drive of the power unit adopts a three-phase bridge type uncontrolled rectifier system, and two controllable IGBTs and two fast diodes are added at the DC side, thus forming a DC voltage lifting chopping circuit which can control the voltage at the DC link and broaden the scope of AC output voltage amplitude; an inverter adopts IGBT single-phase full bridge controllable output, and a fault bypass circuit is added at the output terminal of the inverter; and a rectifier transformer is of common wiring multi-winding type, and all secondary windings have the same wiring mode. A voltage lifting half-bridge and a neutral point in a filter capacitor set are connected with the neutral point in a harmonic current circuit to provide a channel for injecting zero sequence current so as to achieve the sinusoid of high power factor rectification and the input current.

A domino read bit line structure (20) integral to an SRAM array (1, 2) with thirty-two word lines or less to access SRAM cells divided into two groups (3, 4, 90, 100) is described. The bit line structure (20) includes a dynamic bit decode multiplexer (11, 40) and two NAND circuits (5, 80) used to combine the two groups (3, 4, 90, 100), wherein in order to reduce power consumption the two NANDS (80) drive the dynamic bit decode multiplexer (40) directly, such that true and complement dynamic outputs (rt, rc) drive a set-reset latch (50) to convert the dynamic outputs (rt, rc) to a single static signal (doc), wherein the output of the set-reset latch (50) is already static so that the set-reset latch (50) acts as an effective array output latch (7).

The invention provides a device for controlling a TV press key and a TV which is applicable to the TV field. The device for controlling the press key comprises a press key switch which is pressed or rotated to realize the keying operation; an encoder which is connected with the press key switch and outputs a first signal and a second signal according to rotation direction and rotation amplitude of the press key switch; a control switch which is connected with the press key switch and is communicated with a circuit between an external power and the press key switch to output a confirmed signal when the press key switch is pressed. In the embodiment of the invention, the adoption of the passive mechanical rotary encoder realizes the press key control of the TV and realizes all the functions of press key control of the traditional TV through pressing and rotating the press key switch, and combining corresponding design of a screen menu. The device provided by the embodiment of the invention requires less devices with a simple layout of circuit and press key, fewer openings on the panel shell the TV, and thus rendering a more attractive outlook.

The invention discloses a boost and buck integrated bridge-free power factor correction (PFC) circuit, which comprises an alternating current input source Vin, a power metal-oxide-semiconductor field effect transistor (MOSFET) tube S1, a power MOSFET tube S2, a diode D1, a diode D2, a diode D3, a diode D4, a diode D5, a diode D6, a diode D7, an energy storage capacitor C1, an energy storage capacitor C2, an inductor L1, an inductor L2 and a load equivalent resistor R1 and is characterized in that: a bridge-free boost circuit and a buck circuit are combined through the power MOSFET tube S1, the energy storage capacitor C1 and the diode D7; the power MOSFET tube S1 serves as one of switches of the bridge-free boost circuit and also serves as a switching tube of the BUCK circuit; and the energy storage capacitor C1 serves as an output capacitor of the boost circuit to store energy transmitted by the boost circuit and serves as an input capacitor of the buck capacitor to supply energy to a load of the buck circuit. Compared with the prior art, the boost and buck integrated bridge-free PFC circuit has the main advantages that: 1, an input rectifier bridge is saved and conduction consumption is reduced; and 2, the PFC circuit and a backward direct current-direct current (DC-DC) circuit are used in combination, and just one controller can conduct power factor correction and output voltage adjustment functions at the same time, so that fewer devices are used, efficiency is improved, and cost is reduced.

The invention discloses an MMC sub module circuit with a DC-side fault blocking ability, which relates to the field of power system protection control and has the advantages that short circuit current can be completely locked, the structure is simple, the needed elements are few, and integration is high. The MMC sub module circuit with a DC-side fault blocking ability comprises two half bridge sub modules, a first power switch tube with an antiparallel diode and a diode, wherein one half bridge sub module is connected with the emitter of the first power switch tube with the antiparallel diode, and the other one is connected with the collector of the first power switch tube with the antiparallel diode; the negative electrode of the diode is connected with the collector of a second power switch tube with an antiparallel diode in the half bridge sub module connected with the emitter of the first power switch tube with the antiparallel diode, and the positive electrode is connected with the emitter of a third power switch tube with an antiparallel diode in the other half bridge sub module. the product has a small size, and stability is high; the topological structure is simple, the cost is low, and realization is easy; configuration is flexible power consumption is reduced; and the DC side can be broken in the case of short cirucit, and the response is quick.

The invention provides an electric generator. The electric generator comprises a shell and further comprises a pipeline penetrating through the shell. The pipeline is internally provided with an impeller, and a rotating shaft is arranged in the axial direction of the impeller. The rotating shaft penetrates through the pipeline in the axial direction and is rotatably fixed to the inner wall of theshell. Permanent magnetic rotors are fixedly mounted at the positions, symmetrical with respect to the pipeline, on the axle of the rotating shaft. A stator iron core matched with the contour of the shell is attached to the inner wall of the shell. A coil is embedded in the stator iron core in a wound mode. The invention further provides a fuel cell hydrogen energy recovery system comprising the electric generator, and a car. When the electric generator is mounted in a hydrogen pipeline, pressure relief can be conducted on high-pressure hydrogen through rotation of the impeller, so that a pressure-reducing part is omitted; the economic cost and the maintenance cost are saved; and on the other hand, pressure energy of the high-pressure hydrogen can be recycled and converted into electric energy to be utilized, the efficiency of the fuel cell system is improved, and the energy source loss is reduced.

The invention discloses a control circuit for near field communication (NFC) and a smart card. The control circuit comprises at least one antenna, a voltage processing module, a control module, a gating switch module and a preset number of radio frequency communication modules; the antennae acquire wireless electric energy from external NFC equipment and output alternating currents to the voltageprocessing module, and the voltage processing module processes the alternating currents into direct-current power supply voltages to the control module for power supply; the control module outputs a switch control signal to the gating switch module, and the gating switch module switches on or switches off connection between the corresponding radio frequency communication modules and the corresponding antennae according to the switch control signal; and when the radio frequency communication modules and the antennae are connected, the radio frequency communication modules achieve radio frequency communication with the NFC equipment through the antennae. Accordingly, the internal power acquiring problem of the smart card is solved, a battery does not need to be additionally configured, the hardware circuit is simplified, and the smart card has multiple radio frequency communication functions, can be switched among multiple radio frequency communication modes and can be applied to multiple occasions.

The invention discloses a serial port programming and watchdog compatible circuit of an electric driving controller of an electric vehicle. The serial port programming and watchdog compatible circuit is characterized by comprising an external serial port programming enable signal end, a signal conversion circuit and a watchdog shielding circuit, wherein when a serial port is required to be used for programming, the external serial port programming enable signal end is directly connected to a serial port programming 12V ground enable signal; the signal conversion circuit converts the serial port programming 12V ground enable signal into a 3.3V ground enable signal and an enable signal which can be received by a serial port programming enable pin in a digital signal processor (DSP) master control chip to identify a programming instruction; the 3.3V ground enable signal serves as a watchdog shielding signal, and a programming function is normally realized by shielding a watchdog function; and when an external serial port programming enable signal disappears, a design function of a watchdog is recovered. By adoption of the serial port programming and watchdog compatible circuit of the electric driving controller of the electric vehicle, a hardware DSP serial port programming circuit is compatible with a watchdog compatible circuit in a hardware circuit of a pure electric vehicle motor controller.

The invention provides an aerodynamic device configured for being mounted to an aerodynamic structure of an aircraft, the aerodynamic device having a spanwise length, a chordwise width, a leading edge section along a leading edge of the device, for being mounted to the aerodynamic structure of the aircraft, and a trailing edge section along a trailing edge of the device, for providing a required aerodynamic profile, wherein a first chordwise extending segment of the trailing edge section is moveable in a spanwise direction with respect to the leading edge section or with respect to a second chordwise extending segment of the trailing edge section.

The invention is suitable for the field of protection circuits and provides an overcurrent protection circuit of an amplifier output stage. In an embodiment of the overcurrent protection circuit, the overcurent protection circuit of the amplifier output stage adopts a switch element, and sampling voltage at two ends of a sampling resistor increases with increase of output current. When the sampling voltage is higher than the starting voltage of the switch element, the switch element is connected, the grid voltage of a metal oxide semiconductor (MOS) tube is pulled to be high, and output current at the output end of the overcurrent protection circuit of the amplifier output stage. The overcurrent protection circuit of the amplifier output stage has the advantages of being less in device and not consuming static power consumption.

The invention discloses an information synchronization method. The information synchronization method is applied to a quantum key distribution system and comprises three steps: first step, delay calculation: calculating the delay of transmitting signal light from a transmitting end to a receiving end; second step, frame synchronization: performing frame synchronization, that is, determining a frame, through a classical channel; and third step, intra-frame position synchronization: performing intra-frame position synchronization on quantum signal light in a quantum channel, that is, determiningwhich number of the pulse in the frame is, according to the transmission delay calculated in the first step. The invention further discloses an information synchronization apparatus. Compared with the prior art, the information synchronization method and apparatus disclosed by the invention have the following advantages: 1. no additional synchronization light needs to be transmitted, and only oneoptical signal of one wavelength is transmitted in an optical fiber at both ends of a connection system, that is, only one channel is occupied. 2. The receiving end of the system does not need to usea wavelength division multiplexing device and directly uses a single photon detector for detection, thereby saving devices. 3. The synchronization scheme of the two ends of the system is completed bythree steps, so that the implementation efficiency is high.

The invention relates to a terminal and an acoustic wave signal transmission method and belongs to the technical field of the terminal. The terminal comprises a control unit, a signal conversion unit and a piezoelectric ceramic unit. The control unit is connected with the signal conversion unit. The signal conversion unit is connected with the piezoelectric ceramic unit. The piezoelectric ceramic unit is fixed on a machine body of the terminal. The control unit is used for outputting a digital signal corresponding to an acoustic wave signal. The signal conversion unit is used for converting the digital signal into an analog signal. The piezoelectric ceramic unit is used for carrying out vibration according to the analog signal and driving the machine body of the terminal to vibrate, thereby sending the acoustic wave signal. The acoustic wave signal comprises at least one of a voice acoustic wave signal and an ultrasonic wave signal. According to the terminal and the method, the problem that a device cost is high and a circuit occupied space is large due to the fact that two sets of hardware circuits are employed when a mobile phone telephone receiver function and a distance detection function are realized is solved, devices are reduced, and the circuit occupied space is reduced.

Archery bow string dampers and peep sights comprised of a rigid ellipsoidal inner core and an elastomeric outer surface are disclosed.

The drive circuit for an OLED is designed for use with an external reference voltage source. The OLED is connected to the reference voltage source through a PMOS drive transistor. The circuit includes a data signal transmission gate responsive to a control signal for transmitting the data signal to the OLED. It also includes a storage capacitor and a second transistor. The capacitor is connected between the gate and the source of the drive transistor. The second transistor has an output circuit connected between the reference voltage source and the capacitor. The gate of the second transistor is operably connected to receive the control signal.

The invention discloses a differential to single-ended convertor. The differential to single-ended convertor comprises an amplifying circuit, a phase inverting circuit, and a superposed circuit, wherein the amplifying circuit is used for receiving a first input signal and a second input signal, outputting a first amplified signal after amplifying the first input signal, and outputting a second amplified signal after amplifying the second input signal, wherein the phase of the first input signal is opposite to the second input signal; the inverting circuit is used for receiving the second amplified signal and outputting the second phase-inverted amplified signal after inverting the phase of the second amplified signal; and the superposed circuit is used for receiving the first amplified signal and the second phase-inverted amplified signal and outputting a superposed signal after superposing the first amplified signal and the second phase-inverted amplified signal. The differential to single-ended convertor can be applied to a radio-frequency circuit.

The invention relates to a PTC electric heating power compensation method and system and an air conditioner. The PTC electric heating power compensation method comprises the steps: detecting power actually consumed by PTC electric heating under corresponding environment temperature according to a preset period; calculating difference value between the actually consumed power and power consumed according to a PTC electric heating theory under the corresponding environment temperature; and increasing air quantity passing through a PTC according to the difference value so as to compensate the power actually consumed by the PTC electric heating. The larger power attenuation difference between the power actually consumed by the PTC electric heating of the air conditioner and power consumed by unaged electric heating is, the faster rotating speed of an air conditioner fan is, and the larger the power compensation of the PTC electric heating of the air conditioner is until the maximum value is achieved. According to the PTC electric heating power compensation method and system and the air conditioner, few devices are used, a circuit is simple, the power compensation for the PTC electric heating of the air conditioner can be realized quicklyat low cost, the heating effect is strengthened, and meanwhile, the reliability, the safety and the user experience of the air conditioner are improved.