1896 results about "Analogue switch" patented technology

This invention discloses one touch control plane display device, which connect display screen electrode and touch control signal circuit through analogue switch, wherein, the analogue switch set makes the display screen electrode and display drive circuit switching between display drive circuit and touch control signal circuit to connect them to multiplex display screen electrode by time division method and to integrate touch control screen and display screen from time dimension with touch control function.

A semiconductor leakage current detector of the present invention includes a first analog switch which causes a current to be measured to flow or to be cut off, a second analog switch which causes a reference current to flow or to be cut off, an integral capacitance element which is connected by the first analog switch and the second analog switch and is charged with the current to be measured or the reference current, a discharge unit which discharges the integral capacitor, and a comparison unit which compares the reference voltage with each of an integral voltage generated in the integral capacitor by a reference current after the discharge of the integral capacitor and an integral voltage generated in the integral capacitance element by the current to be measured after the discharge of the integral capacitor

A solid-state crossbar switch for transmitting data traffic includes a first number of input ports. Each input port is operable to receive DSL data from a data switch. The crossbar switch also includes a second number of output ports. Each output port is capable of being coupled to a customer premise equipment (CPE) device. The crossbar switch includes a third number of 1×N solid-state analog switches. Each 1×N solid-state analog switch is operable to couple one of the input ports with N output ports. Each input port may be coupled to one of the analog switches. The second number of output ports may be greater than N. The crossbar switch may include a sweeper port coupled to each output port. The sweeper port is operable to monitor each output port to detect an active connection of a CPE device to one of the output ports.

The invention discloses method and device of sharing a minitype USB interface for a UART and a USB, relating to the field of mobile equipment. The method and device of sharing the minitype USB interface for the UART and the USB are characterized in that a USB data transmission interface, a charging interface and a UART interface downloaded and updated by mobile phone software are skillfully multiplexed to a five-pin Micro-USB interface through two single-pole double-throw analogue switches and certain auxiliary circuits, and a USB data transmission function, a charging function and a mobile phone downloading and updating function can be achieved on the same one Micro-USB interface, i.e. a charger, a USB data transmission line and the UART interface are combined in one; three complicated functions are achieved by the Micro-USB interface with very small dimensions, thereby saving valuable space for a mobile phone and being convenient for designing a smaller-size hand-held terminal, and moreover, the device has simple structure and low implementation cost.

A circuitry and a driving method thereof in which a reverse voltage is applied to a light emitting element to control the degradation thereof and improve reliability for a display device comprising a pixel circuit. A first power source line is connected to a signal line through a switching transistor and erasing transistor, and a current controlling transistor and driving transistor are connected in series between the first power source line and a light emitting element. An analog switch including first and second transistors whose gate electrodes are connected to the first and second power source lines respectively is provided. Further, a bias transistor whose gate electrode is connected to a third power source line, one of source and drain electrodes thereof is connected to the first power source line, and the other is connected to an output terminal of the analog switch and a scan line is provided.

A tire pressure monitoring system is provided that includes a switched capacitor circuit having a clock with two non-overlapping clock phases that control a state of analog switches of the switched capacitor circuit. The system uses tire pressure sensor MEMS capacitors that are measured differentially. A capacitance-to-voltage converter is connected to the MEMS sense capacitor, and a sigma-delta converter having a comparator with a first digital output state and a second digital output state is used. The first output state is a sum of reference voltages and the second output state is a difference of the reference voltages. An average value of the capacitance-to-voltage converter output is driven to a zero value and a digital output is provided of the average output states that is equal to a difference between the MEMS capacitors divided by their sum multiplied by a ratio of the reference voltages.

A semiconductor leakage current detector of the present invention includes a first analog switch which causes a current to be measured to flow or to be cut off, a second analog switch which causes a reference current to flow or to be cut off, an integral capacitance element which is connected by the first analog switch and the second analog switch and is charged with the current to be measured or the reference current, a discharge unit which discharges the integral capacitor, and a comparison unit which compares the reference voltage with each of an integral voltage generated in the integral capacitor by a reference current after the discharge of the integral capacitor and an integral voltage generated in the integral capacitance element by the current to be measured after the discharge of the integral capacitor.

The invention discloses an array temperature touch sensing device, which is characterized by adopting microsize negative temperature coefficient (NTC) temperature sensitive devices (such as temperature-measuring type high-precision NTC resistors) to serve as temperature sensitive units. A temperature sensor array distributed cross structure is adopted; the array distribution can be rectangular, round, elliptical, triangular and the like in shape; one end of each temperature measuring resistor in an array is connected with an alignment on which the temperature measuring resistor is located; the other end of each temperature measuring resistor is connected with a line on which the temperature measuring resistor is located; the number of connecting lines required by detecting N*M temperaturesensors is N+M, thereby, the number of the connecting lines for detecting the temperature sensor array can be greatly reduced. A multi-way electronic analogue switch and a feedback driving isolating circuit are adopted to virtually isolate out all the temperature sensitive resistor devices from the array, and the point temperature is accurately measured through the temperature sensitive resistors, and all temperature points on the array are rapidly measured through carrying out high-speed sweep measurement on all the devices in the array one by one. The array temperature touch sensing device is capable of simultaneously and dynamically measuring temperature signals within a certain spatial range and has the characteristics of high temperature measurement precision, high speed, high spatial resolution and good anti-noise jamming performance.

An embodiment of the invention discloses a circuit capable of reusing universal serial bus (USB) / universal asynchronous receiver / transmitter (UART) interfaces an electronic device using the same. The circuit comprises an external interface, a processing chip, a first simulation switch, a second simulation switch and a voltage division circuit. The state of a first port of the external interface is utilized to judge whether a USB standard interface connected with a USB data line or a USB standard interface connected with a UART data line is plugged in. If the USB standard interface connected with the USB data line is judged to be plugged in, the first simulation switch and the second simulation switch are utilized to switch a path, a USB_DM pin for processing a chip is connected with a D+ line of the USB data line, a USB_DP pin is connected with a D- line of the USB data line, and transmission of USB data is achieved. If the USB standard interface connected with the UART data line is judged to be plugged in, the first simulation switch and the second simulation switch are utilized to switch the path, a URXT / general purpose input / output (GPIO) reuse pin for processing a chip is connected with an RXT line of the UART data line, a UTXD / GPIO reuse pin is connected with a TXD line of the UART data line, and transmission of UART data is achieved. The circuit can reuse the USB interfaces and the UART interfaces, meets the requirement of the electronic device for thinness, reduces interface quantity, and is attractive in appearance.

The wire rope detection method based on 3D leakage magnetic field comprises: acquiring the defect sample magnetic leakage signal by Hall sensor array; eliminating trough by an adaptive space trapping filter; taking normalization and K-L transformation to extract feature and train NN, and detecting the real defect by the network. The corresponding detection device comprises: a sensor probe included a permanent magnet excitation part and an analog switch and a photoelectric encoder, a data acquirement processor, and a computer. This invention can provide full defect signal and improve detection precision.

A power voltage of a power source circuit is produced by amplifying a threshold voltage difference of an operational amplifier by an amplification factor corresponding to a dividing ratio of a resistance dividing circuit. The power source circuit is integrated on a CMOS substrate together with a computer block. A plurality of analog switches are associated with the resistance dividing circuit to stabilize the power voltage of the power source circuit. One of these switches is selectively closed to change the dividing ratio of the resistance dividing circuit in accordance with actuation data stored in a control register.

The invention relates to an online fault diagnostic apparatus for a circuit board. The online fault diagnostic apparatus comprises an upper computer and a lower computer, wherein the upper computer is used for performing online signal processing and fault diagnosis, the lower computer is used for providing needed signals for a tested circuit board and uploading test information, and the upper computer and the lower computer are connected and communicated by using a serial bus. The lower computer comprises a CPU (Central Processing Unit) board, a switching power board, a relay switch matrix board, an analog switch matrix board, a digital signal board, A / D (Analog to Digital) and D / A (Digital to Analog) boards, an interface device and a detector, wherein all functional circuit boards are mutually connected in the manner of a system bus, the interface device, the relay switch matrix board and the A / D and D / A boards are electrically connected, and the detector and the CPU board are electrically connected. The invention has strong universality, flexible assembly, simple operation and high fault diagnosis ratio and is suitable for the online fault diagnosis and location of the circuit boards in various industries.

A solution is provided wherein the interfaces between multiple chassis (e.g., edge switches) in a network of layer 2 devices and a spanning tree device are treated as a single emulated switch. This emulated switch effectively enables two different views to the two different sides. Thus, frames from the network of layer 2 switches destined to any port of the emulated switch may take any of the links (through any of the physical switches), thereby enabling effective load-balancing for frames traveling from the layer 2 network side into the spanning tree device. Meanwhile the spanning tree device does not recognize an illegal loop in its connection to two different edge switches as it views the two links as a single logical EtherChannel.

The invention discloses a host-free parking radar system of a series structure. The system is provided with a plurality of sensors, at least one alarm, an internal network and an external network; each sensor comprises a microprocessor, a communication module, an ultrasonic sensor, a driving transmitting module and an ultrasonic receiving module; the communication module comprises a first interface module, a second interface module and an analog switch, wherein the first interface module and the second interface module are led outwards respectively to form a first terminal and a second terminal, and the analog switch is connected between the first terminal and the second terminal and enables information of the first terminal and the second terminal to be interconnected; and the first terminal of each sensor is connected with the second terminal of the adjacent sensor through the internal network to form the series structure, and the first terminal or the second terminal of the sensor positioned at the end is connected with the alarm through the external network. The host-free parking radar system has the effects of simplifying wiring harness connection, reducing vehicle body weight, reducing cost and improving the production efficiency and the installation efficiency.

Each of a plurality of source lines is connected to a video signal line via an analog switch and a read-out switch, which are turned ON / OFF by a source line driving circuit. When the analog switch of the source line is turned ON and the read-out switch thereof is turned OFF, the selected source line is connected to the video signal line, thereby writing a video signal to a storage capacitor of a picture element via a picture element transistor. When the analog switch of the source line is turned OFF and the read-out switch thereof is turned ON, a signal stored in a storage capacitor is read out from the source line to the read-out line via the picture element transistor. The read-out line is a single line shared by the plurality of source lines.

When the computer is powered on, a POST program is executed, and in the setting for enabling a security function, an RFID chip 33 makes Removal Detect Enable a high level and outputs it to the control side of an analog switch 67 and one input of a NAND element 63. The removal of an RF antenna 37 causes a first short-circuit element 36 to be disconnected for shutting off a terminal 71 and a terminal 73, and an INTR signal for prohibiting the keyboard input is outputted by the high-level signal of the element 63 to prohibit access to the computer. If the RF antenna is removed while the power is off, the analog switch 67 is disconnected and the power supplied from a lithium battery to a CMOS memory 50 is shut off, whereby access to the computer can be prohibited.

The invention relates to a water environment monitoring node based on ZigBee wireless technique. The prior technology has long monitoring period and large work intensity, and cannot reflect dynamic variation of water environment. The invention includes an electric power management module, a water quality parameter acquisition module, an MPU module and a ZigBee radio frequency module. The equipment adopts an MSP430F149 MPU, for analyzing and processing water environmental parameter, and controls the operating status of the ZigBee radio frequency module and the water quality parameter acquisition module. The MSP430F149 processor is interconnected to the water quality parameter acquisition module through a 12 bit A / D converter self integrated with the MSP430F149 processor, and is interconnected to the ZigBee radio frequency module through an SPI serial interface, meanwhile also controls a power supply management module to supply power through an analogue switch, so as to achieve the goal of energy-saving. The invention has low cost, and low power consumption; can be arranged in water environment for a long term, execute multiple parameter real time monitoring to the water environment, and complete the high-efficiency transmission of data, thereby having wide applications prospect in the water environment monitoring.

An organic electroluminescent display and driving method thereof. The organic electroluminescent display includes a demultiplexer for outputting signals provided by a data driver to a plurality of data lines according to on / off operation of analog switches. The driving method divides a frame into two parts, and drives them. Data signals are applied to pixels which are not adjacent among the pixels of each row during the former ½ frame, and the data signals are applied to the pixels to which no data signal has been applied in the former ½ frame during the latter ½ frame.

A tire pressure monitoring system is provided that includes a switched capacitor circuit having a clock with two non-overlapping clock phases that control a state of analog switches of the switched capacitor circuit. The system uses tire pressure sensor MEMS capacitors that are measured differentially. A capacitance-to-voltage converter is connected to the MEMS sense capacitor, and a sigma-delta converter having a comparator with a first digital output state and a second digital output state is used. The first output state is a sum of reference voltages and the second output state is a difference of the reference voltages. An average value of the capacitance-to-voltage converter output is driven to a zero value and a digital output is provided of the average output states that is equal to a difference between the MEMS capacitors divided by their sum multiplied by a ratio of the reference voltages.

The invention discloses a microelectrode array-based multichannel neural information detection system and relates to neurobiological detection technology. The microelectrode array-based multichannel neural information detection system comprises an analogue switch array, an electrophysiological signal detection circuit, an electrochemical signal detection circuit, an electrical stimulation signal generation circuit, multiple analogue to digital (A-to-D) converter circuits, a temperature detection circuit, a high-speed universal serial bus (USB) transmission circuit, a wireless Bluetooth communication module, data processing software to be run on a computer and the like. The multichannel neural information detection system disclosed by the invention can be used for acquiring electrophysiological and electrochemical neural information of in vivo animals or in vitro tissue; and by combining with different kinds of microelectrode arrays, the multichannel neural information detection systemcan detect the electrophysiological and electrochemical signals of a plurality of neurons in a two-dimensional or three-dimensional scale, acquire more complete and accurate experimental data, and realize bidirectional and double-mode application and implementation of neurons.

A liquid crystal display device includes a display circuit having data lines and scanning lines arranged in two-dimensional matrix, and switching elements connected between the data lines and the scanning lines. A first inspection circuit is also provided, including an inspection voltage input and / or output terminal for inputting and / or outputting an inspection voltage to / from one ends of the data lines via a first analog switch. A second inspection circuit includes an inspection voltage input and / or output terminal for inputting and / or outputting an inspection voltage to / from the other ends of the data lines. The display circuit, the first inspection circuit, and the second inspection circuit are provided on one substrate, and the first inspection circuit is constructed to be separated from the rest of the display circuit.

The invention relates to a periodic location region updating method of a dual card dual standby mobile phone with a single GSM communication module. An antenna in the mobile phone is connected with a radio frequency circuit which is connected with a baseband processor which is also connected with a memorizer, other control circuits and an analog switch; two SIM cards are serially communicated on the analog switch. The method comprises (1) whether the two SIM cards belong to the same operator is judged; (2) if so, an SIM card is selected to obtain a cell parameter T3212 from a BCCH and the other SIM card obtains a cell parameter T3212 from the first SIM card; (3) if not, whether the periodic location updating parameters are identical is judged, if so, the step (2) is turned to, and if not, the periodic updating of the SIM card is carried out independently; (4) a timer is started by the SIM1 and the SIM2; (5) the location updating is independently started by the two SIM cards when the timer runs to overflow. When the periodic location region updating is achieved for the dual card dual standby mobile pone by the single GSM communication module, the application is convenient and the application range is wide.

The invention discloses a flexible electronic skin with a tactile and proximity dual-mode sensing function. The flexible electronic skin is of a multi-layer structure, which comprises an upper polar plate layer, an intermediate medium layer and a lower polar plate layer in sequence, and the three layers of structures form a sensing unit; the upper polar plate layer, the intermediate medium layer and the lower polar plate layer form a tactile sensing unit to sense the size of a force, and the upper polar plate layer forms a proximity sensing unit to sense the distance; the sensing units are arranged in an array, metal films of the horizontal or vertical sensing units on the same layer are connected into a whole, perform communication by using the same channel and are connected with corresponding analog switches via leads to transmit signals; and the analog switch connects the upper and lower polar plate layers to a capacitance collection chip, and the on-off of the analog switch is controlled by a microprocessor to collect the signals and to switch a tactile sensing mode and a proximity sensing mode. The flexible electronic skin disclosed by the invention has the tactile and proximity dual-mode sensing function, is low in rigidity, is easy to be bend, and can realize the coverage of different areas by splicing.

The invention relates to a method for expanding the earphone interface of a mobile phone into a serial communication interface. The method involves an earphone connector, an earphone interface and a control circuit which is arranged on a main board of the mobile phone and is connected with the earphone interface. The method comprises the following steps: S1, making the uploading port and downloading port of the serial communication interface be able to function as the pins of the left channel and right channel of the earphone connector; S2, arranging an analogue switch on the main board of the mobile phone for switching the serial communication interface and the interface of the left and right channels; and S3, arranging an analog-to-digital conversion pin in a microphone audio circuit of the main board of the mobile phone for detecting the voltage when the earphones are plugged in. The method for expanding the earphone interface of the mobile phone into the serial communication interface of the embodiment of the invention increases the functions of the earphones of the mobile phone, and enables convenient serial communication. Meanwhile, the scheme is also applicable to other mobile phone platforms, and has high generality.

Drive circuitry for capacitive displacement transducers includes an oscillator, a precision low noise voltage reference with added noise reduction circuitry, a synchronous demodulator consisting of a single pole double throw analog switch, one or more transducer electrode drive signals generated by one or more additional analog switches, and feedback circuitry to modify the amplitude of the electrode drive signal based on the circuit output signal, to improve the accuracy of the output signal.

The invention discloses a mobile communication terminal, comprising a five-pin USB connector, an application processing module, a CDMA wireless module, a bluetooth module, an audio coding and decoding module, a WIFI module and a first analog switch; wherein, the application processing module comprises a UART channel and a USB channel; the first analog switch is connected with the USB connector and the application processing module and is used for switching the UART channel and the USB channel; the application processing module is used for receiving and outputting debugging information from the CDMA wireless module via the UART channel under the condition that the first analog switch is switched to the UART channel, and for providing programs to the CDMA wireless module via the USB channel under the condition that the first analog switch is switched to the USB channel; the CDMA wireless module is used for sending the debugging information to the application processing module via the UART channel and for downloading the programs from the application processing module via the USB channel. The mobile communication terminal solves the problem of complex debugging information output and download program interface setting.

The invention discloses a crash auto-restart method and a mobile phone. The method comprises the following steps that: a base band and radio-frequency amplification module outputs a watchdog clearing signal to hardware watchdog; the hardware watchdog outputs a reset signal to an enabling end of a power analog switch when the hardware watchdog does not receive a watchdog clearing signal within a certain period of time; and the enabling end of the power analog switch receives the reset signal which is output by the hardware watchdog to restart the mobile phone automatically. The crash auto-restart method and the mobile phone can improve customer satisfaction, improve market competiveness of the product and save implicit cost.

A test strip and analytical apparatus have pin connections permitting the definition of geographic regions or of particular customers. A test strip made for use in a particular region or for a particular customer will have pin connections matching features of the apparatus made for use in that region or by that customer. Insertion of the strip into the apparatus does not merely turn on the apparatus, but provides the regional or customer coding. Analog switches within the apparatus allow coding of a larger number of distinct regions or customers than would otherwise be possible, all without degrading the quality of the measurements made of the fluid being tested. Conductive paths in the strips permit testing the strips during manufacture so as to detect quality lapses regarding the printing or deposition of the paths.

The invention discloses a GGGC mobile telephone and accomplishment method thereof. The mobile telephone uses a set of GSM communication circuit, an antenna, a single memory, two sets of SIM card interface circuit and an analog switch, and a set of other control circuit. The GSM communication circuit comprising RF circuit and base-band processor; the RF circuit comprises a RF transceiving chip, a RF power amplifier and an antenna switch; wherein, the antenna switch is integrated in a front end module; the base-band processor comprises a GSM signal processor and general embedded CPU; other control circuit comprises a power source power module, a keyboard, an audio circuit and a LCD interface circuit. The GSM mobile terminal of the invention is capable of supporting two SIM cards and standby of the two SIM cards at the same time with only one GSM communication module. The GGGC mobile telephone is smaller volume, which reduces cost of mobile telephone.

The invention provides a lower power consumption wireless sensor network node device capable of monitoring vibration continuously, wherein a power supply module, a communication module and a sensor module are connected with a microprocessor. The power supply module is structurally characterized in that the output ends of a solar battery and a lithium battery are connected with three input ends ofa first analogue switch respectively. The output end of the first analogue switch is connected with the power supply interface of the microprocessor. The signal output end of a self-sourced vibrationsensor is respectively connected with the signal input end and the interruption port of the microprocessor through a first operational amplifier and a comparator. The signal output end of an external-sourced acceleration sensor is connected with the other signal input end of the microprocessor through a second operational amplifier and the power supply end of the external-sourced acceleration sensor is controlled by the second analogue switch of the microprocessor and connected with the current power supply output end selected by the node. The device has the advantages of obvious energy-saving effect and can ensure the long-term continuous work of the network node of the wireless sensor.