Abstract: A mobile phone anti-theft system includes a mobile phone, a SIM card and a real-name card-issuing system. The real-name card-issuing system includes a central processing unit, a first user information storage area, transmission equipment, and a card reader. The SIM card communicates with the central processing unit through the card reader and the transmission equipment. The real-name card-issuing system sends user information stored in the first user information storage area to the SIM card. If the SIM card needs to change the user information, it should verify first cryptographic keys with the real-name card-issuing system. The mobile phone includes a micro control unit, a second user information storage area and a transmission unit. The SIM card communicates with the micro control unit through the transmission unit. After each startup of the mobile phone, the mobile phone verifies second cryptographic keys with the SIM card.

Abstract: The present disclosure provides an electronic device having rotary input members. The device includes a substantially cylindrical main body, at least one hollow rotary input member rotatably connected to the main body, at least one pair of pads including two pads spaced from each other, arranged on the main body and beneath the at least one rotary input member, at least one selection contact arranged on an internal surface of the at least one rotary input member, and a processing unit. When a closed loop includes a pair of pads, a selection contact and the processing unit is formed, the processing unit determines input characters according to a relationship table.

Abstract: A support apparatus includes a supporting member, with two movable members movably attached to opposite sides of the supporting member, and two releasing members movably attached to each movable member respectively. The movable members can be moved out or in relative to the supporting member.

Abstract: An exemplary liquid crystal display device includes a backlight module, a metallic bracket and a liquid crystal panel. The backlight module includes a back bezel, a planar lighting source mounted on the back bezel and a frame. The frame includes a metallic beam and three plastic beams. The metallic beam and the plastic beams enclose the back bezel. The metallic beam is located at a top of the liquid crystal display device. The metallic bracket supports the backlight module and thermally connects with the metallic beam of the frame of the backlight module. The liquid crystal panel is located at a surface of emission of the planar lighting source.

Abstract: An electronic device with a water level monitoring system monitors a buoy to determine if a water level is acceptable. The device separates level markers of the containment facility and the buoy floating therein. The device traces a trace of the movement of the buoy and compares the trace and security lines to determine if the water level is acceptable or not. If the water level is unacceptable, the device sends an alarm to an alarm mainframe to display a warning on a monitor array.

Abstract: A backlight driving system driving a plurality of lamp groups comprises a phase controller, a pulse width module (PWM) controller, a plurality of power stages, a plurality of transformers and a plurality of switch circuits. The phase controller generates a plurality of phase signals. The PWM controller generates PWM signals. The power stages receive and convert direct current (DC) signals from an external power source to alternative current (AC) signals under the control of the PWM signals. The transformers receive and boost up the AC signals from the power stages to drive the lamp groups. The switch circuits alternatively transmit the DC power signals from the external power source and the PWM signals from the PWM controller to the power stages so as to control outputs of the power stages.

Abstract: A method for preventing fake charging of an electronic apparatus is provided. The method includes: providing a power management table for setting function units for each power range; activating a fake charging preventing function according to a predetermined condition or an activating operation of users; detecting power of the electronic apparatus every a first predetermined time interval; determining a current power range the detected power falls into; determining whether the current power range is changed; beginning to time when the current power range is changed; activating function units which are disabled and whose power range is the current power range when the timing reaches a second predetermined time interval and the detected power is still in the current power range.

Abstract: A loudspeaker includes a frame, a magnetic circuit, a voice coil bobbin, and a voice coil. The frame is mounted on a side of the magnetic circuit. The magnetic circuit defines a magnetic gap. The voice coil bobbin is disposed in the magnetic gap. The voice coil is wound around the voice coil bobbin. The voice coil bobbin includes a carbon nanotube layer structure. The carbon nanotube layer structure includes a plurality of carbon nanotubes.

Abstract: A method for positioning edges of a photograph, includes flowing steps. A photograph taken by a camera module of an electronic device is obtained. RGB values of the pixels of the photograph are processed to get corresponding RGB modification values of the pixels of the photograph. Positions of vertexes of the photograph are computed according to the RGB modification values. The vertexes are connected to form edges of the photograph.

Abstract: A battery cover assembly for a portable electronic device includes a base body, a battery cover, and an operating member. The base body forms two hooks. The operating member is rotatably attached to the battery cover. The operating member includes two arms latching with the hooks. When the operating member is rotated, the arms are moved to separate from the hooks to allow the battery cover to releasably latch to the base body.

Abstract: A latching mechanism for a portable electronic device includes a housing, a cover, a button, a latching member and at least one elastic member. The housing defines a latching hole. The cover defines a guide slot along a first direction. The button is assembled in the cover and movable along the guide slot. The latching member is secured with the button in a first direction and movable along a second direction, perpendicular with the first direction. The at least one elastic member is assembled between the button and the latching member. The latching member latches into the latching hole to secure the cover with the housing in the first direction. The button is pushed and slides along the guide slot. The latching member slides out the latching hole to unlatch the cover in the first direction.

Abstract: An exemplary light emitting diode (LED) package includes a substrate, an LED chip mounted on the substrate, and a wire. The LED chip includes a semiconductor structure and an electrode disposed on the semiconductor structure. The wire electrically connects the electrode of the LED chip to an electrical portion of the substrate. The wire has a first joint and a second joint connected to the substrate. The wire forms a first curved portion between the electrode and the first joint and a second curved portion between the first joint and the second joint.

Abstract: A fan speed control circuit includes a voltage input terminal, a thyristor, a thermistor, and first and second switches. The terminal is grounded through a first resistor and the thermistor, connected to an anode of the thyristor, and connected to a second terminal of the second switch through a second resistor. A node between the resistor and the thermistor is connected to a control terminal of the first switch. A second terminal of the first switch is grounded. A first terminal of the first switch is connected to a control terminal of the thyristor through a third resistor. A fourth resistor is connected between the anode and control terminal of the thyristor. A control terminal of the second switch is connected to the control terminal of the thyristor. A first terminal of the second switch is connected to a cathode of the thyristor and a voltage pin of a fan.

Abstract: A testing system for a PSU includes a test chamber and a control device. The test chamber includes a first partition with the PSU accommodated therein and a second partition with an electric load accommodated therein. The PSU is electrically connected to the electric load. The control device includes a microcontroller unit (MCU). The MCU is connected to a setting circuit and a temperature sensing circuit. The setting circuit is configured to set one of predetermined parameters. The temperature sensing circuit is capable of sensing temperature in the test chamber. The MCU is capable of automatically controlling a predetermined temperature in the test chamber and presetting a test time for testing the PSU.

Abstract: A printed circuit board layout method includes the following steps. A printed circuit board with a signal layer and a pair of differential transmission lines positioned on the signal layer is provided. A first distance is determined; when the distance between the pair of differential transmission lines is greater than the first distance, an eye width and an eye height of an eye diagram nearly remains the same. When a distance between the pair of differential transmission lines is less than the first distance, an eye width and an eye height of an eye diagram decreases. A second distance that is less than the first distance is set between the pair of differential transmission lines which makes the eye width and the eye height greater than a predetermined value, and which is determined by a Far End Crosstalk (FEXT) on the eye diagram when the pair differential transmission lines transmit signals.

Abstract: An exemplary LED lamp includes a central member, lamp bodies, a solar panel transforming solar power to electric energy, and a supporting member supporting the solar panel over the central member. Each lamp body includes a housing and an LED module received in the housing. The housings of the lamp bodies have bottoms thereof mounted around the central member and have tops thereof extending upwardly and outwardly from the central member. Each of the housings defines an opening facing away from the central member. Light generated by the LED modules projects out of the lamp bodies through the openings. The solar panel provides the electric energy to the LED modules.

Abstract: A grounding mechanism is used for a slidable electronic device including a first housing and a second housing. The grounding mechanism includes a grounding tab and a protrusion. The grounding tab is for attachment to the first housing, and defines a depression coated with a conductive layer. The protrusion is formed in the second housing. When the protrusion is received in the recess, the protrusion abuts against the conductive layer for electronically connecting the first housing to the second housing.

Abstract: A broadband antenna printed on a substrate. The substrate includes a first surface, a second surface perpendicular to the first surface, and a third surface parallel to the first surface. The broadband antenna includes a grounding portion, a feeding portion, and a radiating portion. The grounding portion is located on the first surface. The feeding portion feeds electromagnetic signals and includes a first feeding section printed on the third surface and a second feeding section printed on the second surface. The radiating portion includes a first radiating section, a second radiating section, and a third radiating section. The first radiating section is printed on the first surface. The second radiating section comprises a first radiating segment and a second radiating segment. The third radiating section is printed on the second surface and formed a ladder portion.