Abstract: A system and method for converting a document is described. The system accesses a document comprising one or more section breaks. The system detects sections of the text document demarked by the one or more section breaks and generates a section title metadata and a section summary metadata for each section of the plurality of sections. The system inserts the section title metadata and the section summary metadata at the corresponding section breaks in the text document. The system modifies the text document into slides. Each slide being formed for each section based on the corresponding section title metadata and the section summary metadata. The system generates a presentation document based on the slides.

Abstract: A charging circuitry includes a power electronic converter, a current sensor, a voltage boost/buck controller and a charging mode controller. The power electronic converter is configured to charge or discharge a supercapacitor according to a control command. The current sensor is coupled to the supercapacitor for detecting a first sensed voltage and a second sensed voltage. The voltage boost/buck controller is configured to generate the control command and a current command according to the first and second sensed voltages and an overall feedback. The charging mode controller is configured to generate a current feedback and a voltage feedback to the voltage boost/buck controller according to a driving voltage, the current command and a third sensed voltage of the supercapacitor. The third sensed voltage, the current feedback and the voltage feedback are superposed as the overall feedback and then inputted to the same input terminal of the voltage boost/buck converter.

Abstract: A battery pack, comprising a first cell and a second cell connected in series, the first cell having a current cut-off device and having a first failure voltage, the current cut-off device being configured to be able to break a circuit in response to a voltage value of the first cell reaching or exceeding the first failure voltage, and the second cell having no current cut-off device. The battery pack may use a soft pack battery as the second cell, having advantages such as high energy density, low impedance, high discharge power, a low rate of temperature rise during high-rate discharge, and flexibility in dimensions.

Abstract: An electronic transformer includes a first forward rectifier, a second forward rectifier, a third forward rectifier and a backward rectifier. The first forward rectifier is coupled between a first-phase power and a first output terminal. The second forward rectifier is coupled between a second-phase power and the first output terminal. The third forward rectifier is coupled between a third-phase power and the first output terminal. The backward rectifier is coupled between a neutral line and a second output terminal. The first forward rectifier, the second forward rectifier, and the third forward rectifier are configured to half-wave rectify the first-phase power, the second-phase power, and the third-phase power to generate rectified first-phase to third-phase power sources, and superimpose the rectified first-phase to third-phase power sources on the first output end to serve as an output voltage of the electronic transformer.

Abstract: The control device includes a touch sensor circuit, a control circuit, a driving circuit and a switching circuit. The touch sensor circuit is configured to generate a touch signal and a function signal in response to a touch state of a touch component. The control circuit is activated by a first voltage. The control circuit selectivity generates a self-holding signal according to the function signal when it is activated. The driving circuit is configured to generate a drive signal according to the touch signal or the self-holding signal. The switch circuit is turned on by the drive signal so as to provide the first voltage to the control circuit by the turned-on switching circuit. When the control circuit generated the self-holding signal, the control circuit is configured to continuously transmit the self-holding signal to the driving circuit according to the function signal during a first enabling period.

Abstract: The control device includes a touch sensor circuit, a control circuit, a driving circuit and a switching circuit. The touch sensor circuit is configured to generate a touch signal and a function signal in response to a touch state of a touch component. The control circuit is activated by a first voltage. The control circuit selectivity generates a self-holding signal according to the function signal when it is activated. The driving circuit is configured to generate a drive signal according to the touch signal or the self-holding signal. The switch circuit is turned on by the drive signal so as to provide the first voltage to the control circuit by the turned-on switching circuit. When the control circuit generated the self-holding signal, the control circuit is configured to continuously transmit the self-holding signal to the driving circuit according to the function signal during a first enabling period.

Abstract: A magnetic field shielding system includes a first stage superconducting coil and a second stage superconducting coil. The first stage superconducting coil and the second stage superconducting coil are coaxial, coplanar and electrically connected in series to form a closed loop; the first stage superconducting coil has a first radius R1, the second stage superconducting coil has a second radius R2, and R1>R2; a radius ratio ? between the first radius R1 and the second radius R2 is: ?=R1/R2; the first stage superconducting coil has N1 turns; the second stage superconducting coil has N2 turns; a turns ratio ? between N1 and N2 is: ?=N1/N2; and the radius ratio ? satisfies: ??2; the turns ratio ? satisfies: 0.01???20.

Abstract: A magnetic field shielding system includes a first stage superconducting coil and a second stage superconducting coil. The first stage superconducting coil and the second stage superconducting coil are coaxial, coplanar and electrically connected in series to form a closed loop; the first stage superconducting coil has a first radius R1, the second stage superconducting coil has a second radius R2, and R1>R2; a radius ratio ? between the first radius R1 and the second radius R2 is: ?=R1/R2; the first stage superconducting coil has N1 turns; the second stage superconducting coil has N2 turns; a turns ratio ? between N1 and N2 is: ?=N1/N2; and the radius ratio ? satisfies: ??2; the turns ratio ? satisfies: 0.01???20.

Abstract: A notebook computer is provided. The notebook computer includes a screen panel, a main body, two connecting members, and two shafts. The connecting members connect the screen panel to the main body. The screen panel rotates relative to the main body. The main body defines two slide channels and a receiving space. A depth of the receiving space is greater than a depth of the slide channel, a pair of guiding grooves is defined in two opposite inner sidewalls of each slide channel, and a hole is defined in each inner sidewall of each slide channel at an end of corresponding guiding groove adjacent to a bottom of the receiving space and communicating with the corresponding guiding groove. The screen panel is slidable relative to the main body on and along the slide channels.

Abstract: A notebook computer is provided. The notebook computer includes a screen panel, a main body, two connecting members, and two shafts. The connecting members connect the screen panel to the main body. The screen panel rotates relative to the main body. The main body defines two slide channels and a receiving space. A depth of the receiving space is greater than a depth of the slide channel, a pair of guiding grooves is defined in two opposite inner sidewalls of each slide channel, and a hole is defined in each inner sidewall of each slide channel at an end of corresponding guiding groove adjacent to a bottom of the receiving space and communicating with the corresponding guiding groove. The screen panel is slidable relative to the main body on and along the slide channels.

Abstract: An electronic device includes a housing, a card holder, a latching mechanism, and an elastic member. The housing defines a receiving channel and includes a sidewall. The sidewall defines a slot communicating with the receiving channel and a button hole. The card holder is slidably received in the receiving channel and defines a latching hole. The latching mechanism includes a pushing rod movably received in the button hole, a latching rod slidably received in the housing, and a connecting rod with opposite ends respectively articulated to the pushing rod and the latching rod. The elastic member is received in the housing and is configured to apply a pushing force to the card holder.

Abstract: A mouse includes a first cover, a second cover, and a circuit board. The first cover is engaged with the second cover to define an opening and a receiving space between them. A hand passes through the opening to be located in the receiving space to manipulate the mouse. The receiving space defines four finger-shaped receiving portions for the hand. The second cover has a wheel in the first receiving portion, has a first key in the second receiving portion, and has a second key in the third receiving portion. When the hand manipulates the wheel, the first key, and/or the second key, the wheel, the first key, and/or the second key establish an electronic connection with the circuit board to allow the wheel, the first key, and/or the second key to perform operations.