Abstract: A holder for supporting a portable electronic device and includes a pedestal and a supporting board. The supporting board includes a resisting portion and at least one resonator portion. The resisting portion is mounted on and has a predetermined angle with a top surface of the pedestal. The resonator portion is connected to an edge of the resisting portion and extends from the edge towards a side contrary to the resisting portion a predetermined distance and then extends towards the resisting portion. The resisting portion and the top surface of the pedestal cooperatively support the portable electronic device. The resonator portion is configured to resonate and guide sounds generated by the portable electronic device.

Abstract: In a method for correcting errors occurring in attention (AT) commands of a mobile device, the mobile device includes a first user identity module (UIM) chipset, a second UIM chipset, a buffer and a timer. The method sets a response time for a communication between the first UIM chipset and the second chipset according to an AT command, backups the AT command into the buffer, and counts a communication time using the timer. When the communication time exceeds the response time, the method restarts the first UIM chipset using a watchdog timer and restarts the second UIM chipset by resetting voltage levels of I/O pins of the second UIM chipset. The method further clears the communication data stored in the buffer, reads the AT command from the buffer and resends the AT command to control the first UIM chipset to communicate with the UIM second chipset normally.

Abstract: In a method for processing unsolicited result codes (URCs) of a communication device, keywords of a URC are extracted when the URC is sent from a modem of the communication device to an operating system of the communication device. A digital code of the keywords is obtained by encoding the extracted keywords. A function of the communication device is executed to process the received URC according to the digital code of the keywords.

Abstract: An electronic device includes a housing, a mounting sheet, a circuit board mounted to the housing and the mounting sheet, and a loudspeaker module mounted on the mounting sheet. The housing defines a first receiving chamber and a second receiving chamber communicating with the first receiving chamber at one end of the housing, and a first sound hole corresponding to and communicating the first receiving chamber. The loudspeaker module includes a first loudspeaker which is received in the first receiving chamber. The first receiving chamber communicates the second receiving chamber to form a resonant cavity for the first loudspeaker. The sounds emitted by the first loudspeaker transmit to the outside of the housing by the first sound hole.

Abstract: A portable electronic includes a main body defining a plurality of mounting holes at corners; a plurality of mounting modules; a plurality of resilient members compressed and mounted in mounting holes of the main body by the corresponding mounting modules; and a control module. The control module includes a MCU; an acceleration transducer connected to the MCU to sample a real-time acceleration value, and a memory connected to the MCU to store a critical acceleration value. The control module controls the mounting modules to release the compressed resilient members so as to eject out the resilient members from the main body, when the real-time acceleration value is larger than the critical acceleration value.

Abstract: A multiband antenna in a wireless communication device includes a main antenna, a first parasitic portion, a second parasitic portion, a first switch, and a second switch, the first switch is used to control functioning of the first parasitic portion. The second switch is used to control functioning of the second parasitic portion. Therefore, the main antenna can resonate alone or in combination with the functioning first parasitic portion and/or the functioning second parasitic portion, the multiband antenna has different operating frequency bands and different operating SAR.

Abstract: An electronic device includes a first housing, a second housing engaged with the first housing, a circuit board enclosed between the first and second housings, two speakers, and an antenna. The speakers and the antenna are attached to two sides of the circuit board. The first housing defines two receiving recesses in a surface facing the circuit board and two first through holes each adjacent to one corresponding receiving recess. Each receiving recess defines a second through hole in a bottom. The speakers are received in the receiving recesses. The receiving recesses communicate with the vents to form front resonating chambers for the speakers. The circuit board defines two third through holes aligned with the first through holes and communicating with the recessed sections. The first, second, and third through holes, the recessed sections, and the vents communicate with each other to form back resonating chambers for the speakers.

Abstract: A voltage conversion circuit for a charging device includes a voltage-stabilizing circuit and a switching circuit. The voltage-stabilizing circuit includes a voltage stabilizer circuit and a feedback resistor, the voltage stabilizer circuit comprises an input pin, an output pin, and a feedback pin. The switching circuit includes a switch and at least two divider resistors, the switch comprises at least two data input terminals, a data output terminal, and two control terminals. The input pin is connected to a power source, and the feedback resistor is connected between the feedback pin and ground. The data input terminals are respectively connected to the output pin through one of the divider resistors, the data output terminal is connected between the feedback pin and the feedback resistor, the two control terminals are capable of receiving control signals to control the data output terminal to selectively connect to one of the data input terminals.

Abstract: A mobile device and a method include setting a vibration intensity grade and activating a vibration sensor to detect vibration intensity of the mobile device. The mobile device and the method further include obtaining the output induced voltage amplitude, confirming a vibration intensity grade, and controlling a music adjuster to adjust a playing speed and a playing volume of a music player to the confirmed vibration intensity grade.

Abstract: A portable electronic device includes a housing and a chip card holder. The chip card holder includes a base fixed to the housing, a drawer slidably fixed to the base. The drawer includes at least two stacked receiving grooves, each receiving groove receives one of the chip cards.

Abstract: A portable electronic device includes an earphone jack for receiving an earphone plug, a switch unit and a signal processing unit. The switch unit is connected to the earphone jack and is switchable between a first state and a second state. The signal processing unit is connected to the earphone jack and the switch unit. The signal processing unit is used to identify a type of the earphone plug received in the earphone plug and control the switch unit to switch to either the first state or the second state according to the type of the earphone plug.

Abstract: A portable electronic device includes an earphone jack circuit for receiving an earphone plug, a control circuit and a switch circuit. The control circuit sends audio to or receives audio from the earphone plug by the earphone jack. The switch circuit is set between the earphone jack and the control circuit including a first mode and a second mode. The control circuit identifies a type of the earphone plug, and switches the switch circuit to a corresponding mode according to the type of the earphone plug.

Abstract: A chip card holder for holding at least one chip card, includes a base, a drawer and a arm. The drawer is slidably attached to the base. The drawer defines a receiving space and a receiving groove communicating with the receiving space. The arm is rotatably attached in the receiving groove. When only one chip card is received in the receiving space, the arm rotates relative to the drawer until the arm is pressed on the chip card so the chip card is held in the receiving space by the arm; when two chip cards are stacked in the receiving space, the arm is attached in the receiving groove to prevent said two chip cards from sliding out of the receiving space through the receiving groove.

Abstract: A computing device and an automobile controlling method stores identification information in an electronic tag of authorized communication devices and a memory of the computing device. The identification information of an electronic tag of a communication device is obtained and a door of an automobile is unlocked if the obtained identification information matches identification information stored in the memory.