摘要:
Provided is a protection cover, applicable to an electronic device. The protection cover includes a cover body and at least one sensing module. The cover body has a view window, wherein the cover body is suitable for covering a display surface of the electronic device and exposing a part of the display surface via the view window. The at least one sensing module is provided on the cover body and aligns with the view window, wherein the at least one sensing module is suitable for sensing at least one object in the view window to generate a touch signal, and transmitting the touch signal to the electronic device.
摘要:
A portable electronic device includes a first body and a second body. The first body includes a casing, a supporter, a first magnetic component and a torsion component. The casing includes an accommodating trench and a first trench communicated with the accommodating trench. A first lateral of the supporter is pivoted to the casing via the torsion component, and a second lateral of the supporter includes a notch. The magnetic component is slidably disposed in the first trench. The second body is pivoted to the first body and includes a second magnetic component. When the supporter is located in the accommodating trench and the first magnetic component extends into the notch, the supporter is positioned inside the accommodating trench by the first magnetic component, and the torsion component stores elastic potential energy. When the second body is rotated close to the first body, the first magnetic component exits the notch due to a magnetic repulsive force of the second magnetic component, and the torsion component releases the elastic potential energy so that the second lateral of the supporter is rotated out to support the second body.
摘要:
A 3-dimension facet light-emitting source device including a transparent container, an anode plate, a cathode plate, a plurality of transparent plates and a low-pressure gas layer is provided. The transparent container has a sealed space. The transparent plates are disposed between the anode plate and the cathode plate, and have a fluorescent layer thereon respectively. The lower pressure gas layer is filled in the sealed space to induce electrons emitting from the cathode plate, and the electrons fly in a direction parallel to the transparent plates and hit each fluorescent layer to emit light, so as to form a set of 3-dimension facet patterns.
摘要:
Provided is a protection cover, applicable to an electronic device. The protection cover includes a cover body and at least one sensing module. The cover body has a view window, wherein the cover body is suitable for covering a display surface of the electronic device and exposing a part of the display surface via the view window. The at least one sensing module is provided on the cover body and aligns with the view window, wherein the at least one sensing module is suitable for sensing at least one object in the view window to generate a touch signal, and transmitting the touch signal to the electronic device.
摘要:
A phase locked loop, voltage controlled oscillator, and phase-frequency detector are provided. The phase locked loop comprises a phase-frequency detector (PFD), a loop filter (LF), a voltage controlled oscillator (VCO), and a 3-stage frequency divider. The PFD receives a reference signal and a feedback signal to determine phase and frequency errors. The LF), coupled to the phase-frequency detector, filters the phase and frequency errors to generate a control voltage. The VCO, coupled to the loop filter, generates a VCO output signal according to the control voltage. The 3-stage frequency divider, coupled to the voltage controlled oscillator, divides the frequency of the VCO output signal 3 times to generate the feedback signal.
摘要:
A plane light source is provided. The plane light source includes an anode layer, a cathode layer, a discharging gas, and at least one fluorescent layer. The discharging gas is between the anode layer and the cathode layer. The fluorescent layer is disposed on the anode layer and located between the anode layer and the cathode layer. In the plane light source, electrons is activated by discharge of the discharging gas and emitted from the cathode layer. The fluorescent layer is adapted for emitting a light when being bombarded by the electrons.
摘要:
A portable electronic device and a control method thereof are provided. The method is adapted to a portable electronic device including a rotatable element, a fixed element, a screen, a processor, a switch module with at least two protruding elements, and fixed points. The rotatable element is nearby the fixed element. The protruding elements and the fixed points are facing to each other and configured at one and the other of the rotatable element and the fixed element. The processor is coupled to the switch module and the screen. The method includes to display a default user interface corresponding to a default mode on the screen, to determine a corresponding mode according to all press states of each protruding element in the switch module by the processor when the rotatable element is rotated due to an external force applied thereto, and to display a corresponding user interface on the screen.