Abstract:
A network sharing system (1) includes an outdoor wireless transceiver device (10), an indoor network sharing device (20), and a high-speed Ethernet transmission cable (30). The outdoor wireless transceiver device (10) includes a high-frequency network transceiver module (11) and a first Ethernet port (12) and the high-frequency network transceiver module (11) is connected to the first Ethernet port (12) and is configured to receive a high-frequency network signal (H). The indoor network sharing device (20) includes a processing module (21) and a second Ethernet port (22). The high-speed Ethernet transmission cable (30) has a transmission rate above 1 giga bits per second (Gbps), two ends of the high-speed Ethernet transmission cable (30) are respectively connected to a first RJ45 connector (32) and a second RJ45 connector (33), the high-speed Ethernet transmission cable (30) is provided with a flat cable segment (311), the first RJ45 connector (32) is connected to the first Ethernet port (12), and the second RJ45 connector (33) is connected to the second Ethernet port (22).
Abstract:
An overvoltage protection circuit protects a portable electronic device against overvoltage. The overvoltage protection circuit includes an input unit for receiving an input voltage supplied by a voltage source; a voltage-divider module for dividing the input voltage and outputting a divided voltage; a voltage-regulator module for comparing a comparison voltage with the divided voltage and generating a first control signal; a first switch unit being controllably switched by the first control signal to a short-circuit state or an open-circuit state and generating a second control signal; and a second switch unit being controllably switched by the second control signal to a circuit state reverse to that of the first switch unit, and stopping supplying the input voltage to the portable electronic device when the input voltage is no less than a rated voltage of the portable electronic device. Therefore, a temperature-independent overvoltage protection can be achieved.
Abstract:
A power management system applicable to regulating a power supplied to an electronic device having a plurality of electronic elements includes a detection module that detects execution modes of the electronic elements and generate detection data, an analysis module that analyzes the detection data to generate process commands corresponding to the execution modes of the electronic elements, and a process module that gradually regulates the power via a power control mode of the electronic device according to the process commands, the power control mode including a light power supply, a sleep power supply and a turn-off power supply A power management method is also provided for regulating a power supplied to an electronic device having a plurality of electronic elements gradually.
Abstract:
A method for programming output value of a key is applicable to an electronic device having at least a key. Therein, a first output value can be generated when the press key is triggered. The method includes the steps of: setting a second output value for the key; creating and storing a first corresponding table between the first output value and the second output value such that the second output value is obtained from the first corresponding table based on the first output value generated by triggering the key; and converting the second output value into a corresponding key value according to a second corresponding table between output values and key values preloaded in the electronic device.
Abstract:
A method for calibrating frequency, applicable to calibrating a frequency signal generated by a frequency generating unit of an apparatus at a preset frequency, includes obtaining the cycle number of the clock rate of a frequency signal based on a reference signal and a clock mask synchronous with the frequency signal; obtaining a frequency of the frequency signal based on the cycle number; correcting the frequency according to a plurality of phase shift signals generated based on the reference signal; and minimizing an error of the frequency of the frequency signal by increasing the quantity of the phase shift signals, so as to calibrate the frequency signal generated by the frequency generating unit.
Abstract:
A frequency counter obtains a cycle number (Ni) of a clock of a target signal by a reference signal (FB) and a clock mask (mk_FI) synchronous with the target signal, calculates a frequency (FI) of the target signal based on the cycle number, corrects the frequency according to a plurality of phase shift signals (FB-pi) generated based on the reference signal, and minimizes an error of the calculated frequency by increasing the quantity of the phase shift signals, so as to enhance the accuracy of the calculated frequency of the target signal, speed up measurement, and reduce required circuit areas.
Abstract:
A system and a method for connecting macro cellular base stations into mini type base stations are applicable to a mobile communication apparatus having a covering range provided by macro cell base stations upon entering into a range provided by mini type base stations for automatic switching. The method includes establishing a database stored with information related to a geographic distribution for mini type base stations and a listing of authorized admission for allowing mobile communication apparatus to enter; acquiring the geographic area of the mobile communication equipment in order to search the database for at least one mini type base station based on International Mobile Subscriber Identity of the mobile communication apparatus for allowing the mobile communication apparatus to enter into the searched mini type base station from the macro cell base stations for communication.
Abstract:
PROBLEM TO BE SOLVED: To provide an overvoltage protection circuit.SOLUTION: In an overvoltage protection circuit, there is provided overvoltage protection which is designed to ensure that an input voltage supplied between a voltage source and a portable electronic device will not exceed the permissible rated withstand voltage of the portable electronic device. The overvoltage protection circuit receives an input voltage generated from the voltage source through an input unit, and the input voltage generates a divided voltage through a voltage dividing module, so that a voltage stabilization module generates a first control signal which allows a first switching unit to enter a short-circuit state or an open-circuit state, or indirectly controls a second switching unit so as to place it into a short-circuit or an open-circuit state which is opposite to that of the first switching element. When the input voltage exceeds the rated voltage, the input voltage supplied to the portable electronic device is stopped through the second switching unit, whereby overvoltage protection is realized without being affected by temperature.
Abstract:
PROBLEM TO BE SOLVED: To provide a fixing frame and an assembly type fixing device which are used when printing solder paste on a printed circuit board, while simplifying the process, reducing the manufacturing cost and saving the space for storage.SOLUTION: The fixing frame used when printing solder paste on a printed circuit board includes a plurality of fixing parts 11, and at least one power unit 13. The fixing parts 11 are joined by a freely movable system to form a hollow plane region 12. The power unit 13 is disposed on the fixing part 11 and generates a plurality of tensile forces in flush with the hollow plane region 12 by a mechanical transmission system. The freely movable system is a movable snap or a movable clamp. The fixing part 11 has a base 111, and a plurality of snapping posts 112 provided on the surface of the base 111, and generates a tensile force for displacing the snapping posts 112 outward by driving the base 111 by means of the power unit 13 when performing movable snapping.
Abstract:
PROBLEM TO BE SOLVED: To provide a time measuring method and a system therefor in which a computing speed and measurement accuracy are improved in a time measuring process, and a circuit occupation area and power consumption are reduced.SOLUTION: In the time measuring method and the system therefor, a start signal and an end signal generated in measurement start and measurement end respectively are used for setting a clock mask and the number of cycles of a reference signal under the clock mask is obtained to translate and obtain an initial time value while the initial time value is corrected by using a plurality of phase shift signals generated on the basis of the reference signal and errors are more reduced with an increase of the number of phase shift signals, so that a correct time measurement value is obtained. The time measuring method and the system therefor also have advantages of a high measurement speed and a small circuit area occupied by the measuring system.