摘要:
A sensing circuit includes a plurality of sensors, a controller, a multiway switch, a linear optocoupler, and a logical control unit. The plurality of sensors are capable of measuring physical quantity, and each of the plurality of sensors is capable of generating a sensing signal in accordance with the physical quantity. The controller is capable of receiving and analyzing the sensing signals, and transforming the sensing signals into sensing events. The multiway switch is capable of selectively connecting one of the plurality of sensors to the controller. The linear optocoupler is connected between the plurality of sensors and the controller. The logical control unit is capable of controlling the multiway switch to selectively connect one of the plurality of sensors to the optocoupler, and generating a control signal to the controller, wherein the control signal indicating the one of the plurality of sensors connected to the controller.
摘要:
An overvoltage and overcurrent protection circuit includes a connection jack, an overvoltage protection switch connected to the connection jack, an overcurrent protection switch, a voltage reference module, an overvoltage and overcurrent detection module, a comparing module, and a current control module. The overcurrent protection switch is connected to the overvoltage protection switch in serials, and further connected to a load. The voltage reference module is to output a reference voltage. The overvoltage and overcurrent detection module is to detect the voltage of the load and the current of the path. The comparing module is to compare the voltage of the load with the reference voltage, when greater, turns off the overvoltage protection switch, when not greater, turns on the overvoltage protection switch. The current control module is to turn off the overcurrent protection switch if greater than the preset value, and turn on the overcurrent protection switch if not greater.
摘要:
An output controller and an method for outputting a signal flow to one or more earphone jacks according to a connection status of each earphone jack. The output controller includes an interface unit having more than one earphone jacks and an output control unit. The output control unit includes a signal input terminal for receiving a signal flow, a detector, and a determining module. The detector detects whether each earphone jack is connected with an earphone and outputs one or more detected signals representing the connection status of the earphone jacks. The determining module outputs the signal flow directly to the connected earphone jack if only one earphone jack is connected to the earphone or distributes the signal flow being amplified correspondingly into each connected earphone jack if more than one earphone jack is connected to the earphones.
摘要:
A communication device includes a communication unit, a speech recognition module, and a processor. The communication unit builds a communication between the communication unit and an external communication device. The processor records speech between the communication device and the external communication device. The speech recognition module compares each word of the recorded speech with voice samples to determine whether numbers have been spoken. The processor further determines if successive numbers are recorded in a predetermined period, and stores the successive numeric in a storage unit.
摘要:
A digital communication system comprising a host and a client, the host calls the client via two transmission lines. The host includes a processor, a first control unit, a second control unit, a high frequency transformer and an interface unit. The digital communication system utilizes the first control unit and the high frequency transformer to modulate outgoing signals. The digital communication system utilizes the second unit and the high frequency transformer to demodulate incoming signals.
摘要:
A communication terminal device includes a magnetic sensor, a processor, and a power control module. The magnetic sensor detects a current magnetic field generated by induction of internal current in internal circuits of the communication terminal device, and provides a value of strength of the current magnetic field to the processor. The processor compares the value of the strength of the current magnetic field with preset values, and obtains a comparison result. In a situation that the processor determines that the current magnetic field is anomalous according to the comparison result, the processor controls the power control module to withhold power to the communication terminal device.
摘要:
A method for detecting time division duplex (TDD) noise of a communication device, the communication device includes a radio frequency (RF) unit, a voice generation unit, a voice signal acquisition unit, an audio processing unit, and a processor. The RF unit emits a plurality of radio signals. The voice generation unit generates voice signals and outputs the voice signals. The voice signal acquisition unit acquires the voice signals. The audio processing unit converts the acquired voice signals into digital audio signals, and analyzes the digital audio signals to detect whether the digital audio signals contain time division duplex (TDD) noise. The processor generates a result indicating the digital audio signals contain or do not contain the TDD noise according to the analysis of the digital audio signals, and displays the result on a display of the communication device.
摘要:
An incoming call warning device includes a storage unit, a communication unit, a detector, and an incoming call warning module. The storage unit stores a plurality of reference parameters. The communication unit determines whether a call is made to the incoming call warning device. The detector detects a plurality of detected parameters when a call is made to the incoming call warning device. The incoming call warning module receives and compares the reference parameters and the detected parameters, determines whether a user of the incoming call warning device is driving according to a comparison result, and warns the user not to answer an incoming call while driving.
摘要:
A message forwarding method includes: receiving a SIP registration request message carrying a contact address; obtaining the contact address carried in the SIP registration request message; and determining that the contact address is one of SIP proxy server addresses in a network stored in advance; and executing an abnormal process on the SIP registration request message. The present invention also discloses a network device. The message forwarding method and network device in the present invention can prevent a SIP loop attack.
摘要:
A detecting method is provided, which includes extracting an Internet Protocol Identifier value from an obtained data packet. The detecting method may further include searching in a record table containing a correspondence relationship between an Internet Protocol Identifier value and a terminal serial number to determine whether the record table contains an adjacent Internet Protocol Identifier value smaller than the extracted Internet Protocol Identifier value and modifying the adjacent Internet Protocol Identifier value that is smaller than the extracted Internet Protocol Identifier value to be the extracted Internet Protocol Identifier value if the record table contains the adjacent Internet Protocol Identifier value smaller than the extracted Internet Protocol Identifier value. Otherwise, the detecting method may also include, adding a new record of the extracted Internet Protocol Identifier value and the corresponding terminal serial number into the record table. When a notification is received, the detecting method may calculate the number of terminal serial numbers in the record table and output the number of terminal serial numbers as the number of hosts. The provided detecting method may further provide a corresponding statistic and analyzing server and a detecting system.