Abstract: A hot-swappable electronic device and a method for preventing crash of the same are provided. The method includes: detecting, by a controller, whether or not the hot-swappable electronic device is in a power-on state; detecting, by the controller, whether or not a power connection port is connected to an alternating current power source when the hot-swappable electronic device is in the power-on state; detecting, by a first sensor and a second sensor, whether or not a first battery leaves a first battery installation groove and a second battery leaves a second battery installation groove when the power connection port is not connected to the alternating current power source; and lowering, by the controller, a system power consumption of the hot-swappable electronic device when the first battery leaves the first battery installation groove or the second battery leaves the second battery installation groove.

Abstract: A hot-swappable electronic device and a method for preventing crash of the same are provided. The method includes: detecting, by a controller, whether or not the hot-swappable electronic device is in a power-on state; detecting, by the controller, whether or not a power connection port is connected to an alternating current power source when the hot-swappable electronic device is in the power-on state; detecting, by a first sensor and a second sensor, whether or not a first battery leaves a first battery installation groove and a second battery leaves a second battery installation groove when the power connection port is not connected to the alternating current power source; and lowering, by the controller, a system power consumption of the hot-swappable electronic device when the first battery leaves the first battery installation groove or the second battery leaves the second battery installation groove.

Abstract: A handheld electronic device is provided. The handheld electronic device includes a housing, a first speaker, a second speaker, a third speaker, and a fourth speaker. The housing includes a back plate, a first sidewall, and a second sidewall. The first sidewall and the second sidewall are disposed at opposite sides of the back plate. The first sidewall is parallel to the second sidewall, and a length of the first sidewall is greater than a distance between the first sidewall and the second sidewall. The first speaker and the second speaker are disposed in the housing and arranged along the first sidewall. The third speaker and the fourth speaker are disposed in the housing and arranged along the second sidewall.

Abstract: A sound quality evaluation method and a sound quality evaluation system using same are provided. The sound quality evaluation system records playback of a test audio file on a plurality of playback devices to generate a plurality of pieces of audio data, and divides the audio data into a plurality of frequency bands. The sound quality evaluation system calculates the frequency bands to obtain a plurality of evaluation scores of the playback devices. The sound quality evaluation system captures sound quality ranking information corresponding to the playback devices from a reference source, and adjusts the evaluation scores according to the sound quality ranking information, to further obtain a reference model. The sound quality evaluation system adjusts correspondingly evaluation scores of a plurality of to-be-tested playback devices according to the reference model, to obtain sound quality ranking information of the to-be-tested playback devices.

Abstract: Provided is a protection method for use in fan malfunctions, applicable to an electronic device, and effective in preventing the electronic device from being overheated. The electronic device includes a fan, temperature sensor, and processor. The method includes steps of: limiting the processor's performance, upon determination that not only is the fan's rotation speed greater than or equal to a predetermined upper rotation speed limit, but the electronic device's temperature sensed by the temperature sensor is also greater than or equal to a predetermined upper temperature limit; determining whether the fan's rotation speed is less than or equal to a first restored rotation speed when the fan's rotation speed is determined to be less than the predetermined upper rotation speed limit; and stopping the limiting of the processor's performance when the fan's rotation speed is determined to be less than or equal to the first restored rotation speed.

Abstract: A sound quality evaluation method and a sound quality evaluation system using same are provided. The sound quality evaluation system records playback of a test audio file on a plurality of playback devices to generate a plurality of pieces of audio data, and divides the audio data into a plurality of frequency bands. The sound quality evaluation system calculates the frequency bands to obtain a plurality of evaluation scores of the playback devices. The sound quality evaluation system captures sound quality ranking information corresponding to the playback devices from a reference source, and adjusts the evaluation scores according to the sound quality ranking information, to further obtain a reference model. The sound quality evaluation system adjusts correspondingly evaluation scores of a plurality of to-be-tested playback devices according to the reference model, to obtain sound quality ranking information of the to-be-tested playback devices.

Abstract: A size determination method for a document processing device is provided. The document processing device includes an automatic document feeding module. The automatic document feeding module includes a support tray, an entrance and a detecting module. The detecting module includes a front-row detector and plural rear-row detectors. The size determination method includes following steps. Firstly, a document with plural originals is placed on the support tray and inserted into the entrance. Then, a selected original of the document is transported. When the selected original is detected by the front-row detector, the plural rear-row detectors are powered on. The selected original is continuously transported, and the plural rear-row detectors are operated in a detection mode. Then, a size of the selected original is determined according to detection results of the plural rear-row detectors and a transfer time of the selected original.

Abstract: A sheet size detecting mechanism includes a sheet guiding module, a sensing module and a control unit. The sensing module includes a contact element and a circuit board. The circuit board includes a first conducting part, a second conducting part and plural fixed resistors. The first conducting part includes plural conductive segments. The plural conductive segments are connected with the corresponding fixed resistors, respectively. While the sheet guiding module is moved relative to the sheet input tray, the contact element is moved with the sheet guiding module. When the electric connection between a first conductive segment and the second conducting part is established through the contact element, the corresponding fixed resistor provides a resistance value, and the circuit board issues a sensing signal according to the resistance value. The control unit acquires the size of the paper sheet according to the sensing signal.

Abstract: Provided is a protection method for use in fan malfunctions, applicable to an electronic device, and effective in preventing the electronic device from being overheated. The electronic device includes a fan, temperature sensor, and processor. The method includes steps of: limiting the processor's performance, upon determination that not only is the fan's rotation speed greater than or equal to a predetermined upper rotation speed limit, but the electronic device's temperature sensed by the temperature sensor is also greater than or equal to a predetermined upper temperature limit; determining whether the fan's rotation speed is less than or equal to a first restored rotation speed when the fan's rotation speed is determined to be less than the predetermined upper rotation speed limit; and stopping the limiting of the processor's performance when the fan's rotation speed is determined to be less than or equal to the first restored rotation speed.

Abstract: A sheet size detecting mechanism includes a sheet guiding module, a sensing module and a control unit. The sensing module includes a contact element and a circuit board. The circuit board includes a first conducting part, a second conducting part and plural fixed resistors. The first conducting part includes plural conductive segments. The plural conductive segments are connected with the corresponding fixed resistors, respectively. While the sheet guiding module is moved relative to the sheet input tray, the contact element is moved with the sheet guiding module. When the electric connection between a first conductive segment and the second conducting part is established through the contact element, the corresponding fixed resistor provides a resistance value, and the circuit board issues a sensing signal according to the resistance value. The control unit acquires the size of the paper sheet according to the sensing signal.

Abstract: A method for preventing battery from expanding is applied to awake an embedded controller to measure variations of a temperature and a storage capacity of a battery module of an electric device at a preset frequency to timely control the battery module to discharge when the electric device is in an off-state, so as to prevent the battery module from expanding and deforming.

Abstract: A handle structure including a base portion, a stop portion and a grip portion is provided. The grip portion is connected between the base portion and the stop portion. The handle structure has a cavity therein, the cavity has a bottom surface, and the bottom surface of the cavity is inclined to an axial direction of the grip portion.

Abstract: A handle structure including a base portion, a stop portion and a grip potion is provided. The grip portion is connected between the base portion and the stop portion. The handle structure has a cavity therein, the cavity has a bottom surface, and the bottom surface of the cavity is inclined to an axial direction of the grip potion.

Abstract: An electronic apparatus and a booting method thereof are provided. Control a sensing unit to sense a barcode before an operation system is executed by the electronic apparatus. Determine whether the barcode meets a preset barcode. Continue a booting operation of the electronic apparatus if the barcode meets the preset barcode.

Abstract: A fingerprint sensor having electrostatic discharge (ESD) protection includes a first ESD protection electrode and a second ESD protection electrode. The first ESD protection electrode is connected to an ESD protection circuit for providing an ESD path, where the first ESD protection electrode and a fingerprint sensor electrode array are formed in a same layer of the fingerprint sensor. The second ESD electrode is connected to the first ESD electrode via multiple conductive via.

Abstract: An electronic device includes a main body, a first back cover and a second back cover. The main body includes a first surface and a second surface opposite to the first surface. A display is mounted onto the first surface. The first back cover is disposed on the second surface and rotatable about a first axis. The first back cover can be lifted along a first direction by rotating about the first axis. The second back cover is disposed on the second surface and rotatable about a second axis. The second back cover can be lifted along a second direction by rotating about the second axis.

Abstract: A fingerprint sensor having electrostatic discharge (ESD) protection includes a first ESD protection electrode and a second ESD protection electrode. The first ESD protection electrode is connected to an ESD protection circuit for providing an ESD path, where the first ESD protection electrode and a fingerprint sensor electrode array are formed in a same layer of the fingerprint sensor. The second ESD electrode is connected to the first ESD electrode via multiple conductive via.

Abstract: A fingerprint sensor having ESD protection has a body and an ESD protection circuit. The body has a fingerprint sensing electrode array and an ESD protection electrode providing an ESD protection to the fingerprint sensing electrode array. The ESD protection circuit is connected respectively to the ESD protection electrode, a high electric potential terminal and a low electric potential terminal. The ESD protection circuit provides a first static electricity discharge path to the high electric potential terminal, and a second static electricity discharge path to the low electric potential terminal. The fingerprint sensor provides two static electricity discharge paths, so that the fingerprint sensor has a better ESD protection.

Abstract: The invention provides a method and a device for heating an electronic component and an electronic apparatus using the method/device. A heater is disposed at the electronic component. The heating method includes following steps: driving the heater according to a duty ratio by using electrical energy of a power module. If the output voltage of the power module is greater than a first threshold, set the duty ratio as a first ratio. If the output voltage of the power module is less than a second threshold, set the duty ratio as a second ratio. If the output voltage of the power module is between the first threshold and the second threshold, adjust the duty ratio so that the difference between the output voltage of the power module and the second threshold is positively proportional to the duty ratio.