Abstract: A 3D printer includes a machine body, a printing platform, a scanning and driving module, and a scanning and supporting module. The machine body has a bottom plate. The printing platform and the scanning and driving module are disposed on the bottom plate. The printing platform includes a slide track and a movable printing substrate. The scanning and driving module and the slide track are staggeredly disposed such that the scanning and driving module and the slide track do not interfere with the movement of the printing substrate. The scanning and supporting module is detachably combined with the scanning and driving module and is driven by the scanning and driving module.

Abstract: A detachable scanning and supporting module of a 3D printer includes a machine body, a printing platform, a scanning and driving module, and a scanning and supporting module. The machine body has a bottom plate. The printing platform and the scanning and driving module are disposed on the bottom plate. The printing platform includes a slide track and a movable printing substrate. The scanning and driving module and the slide track are staggeredly disposed such that the scanning and driving module and the slide track do not interfere with the movement of the printing substrate. The scanning and supporting module is detachably combined with the scanning and driving module and is driven by the scanning and driving module.

Abstract: In an aligning mechanism of a 3D printer scanning device, a scan driving module includes a base and a motor, and the motor has a driving gear. The scan loading module includes a loading table, a turntable, and an engaging gear connected to the turntable, and the loading table has a notch, and the engaging gear is exposed from the notch. The driving gear of the scan driving module and the engaging gear of the scan loading module have a rounded corner or a positioning portion, so that the driving gear is engaged precisely with the engaging gear.

Abstract: A hard-sided suitcase may include a first shell portion and a complimentary second shell portion connected to the first shell portion and movable between closed position in which the first and second shell portions enclose an interior of the suitcase and an open position permitting access to the interior. The first shell portion may have a first base wall and a first side wall meeting the first base wall at a first juncture. A first design panel may be coupled to the first shell portion. The first design panel covering at least a portion of the first base wall and the first side wall and extending across the first juncture.

Abstract: A liquid density sensor has a sensing module, a sensing rod and a floating device. The sensing module has a control circuit having computing functions. The sensing rod has a sensing line electrically connected to the control circuit. The floating device has a first magnetic unit and a floating ball mounted therein. The sensing rod is mounted through the floating device and the floating ball. The floating ball has a second magnetic unit. A specific gravity of the floating ball is lower than that of the floating device. The control circuit calculates a liquid density of liquid based on a distance between the first magnetic unit and the second magnetic unit according to a linear formula.

Abstract: In a method for unlocking a screen of a mobile device, at least one user-specific number is set and stored into a storage unit of the mobile device. The user-specific number is read from the storage unit and displayed on the screen for selection by a user, when the screen is locked because of input of a wrong password. An unlocking request is transmitted to a terminal providing the selected user-specific number. The mobile device communicates with the terminal, and receives a confirmation message from the terminal, and the screen is unlocked according to the confirmation message.

Abstract: A multifunctional electrical power output protection device includes a protection device having a circuit board. The circuit board is mounted in a receiving space of the protection device and includes an input port, an output port, a switching element, a detection element, and a manually-operating overriding device. The manually-operating overriding device is electrically connected to an end of the detection element. The switching element has an end electrically connected to the input port and an opposite end electrically connected to the output port. The detection element has an end electrically connected to the input port and an opposite end electrically connected to the output port. The switching element and the detection element that are connectable to an external power supply respectively provide an effect of preventing backward charging induced by a reverse electrical current and effects of over-loading interruption and current-limiting protection.

Abstract: Certain aspects of the present disclosure provide fully differential phase detectors for use in delay-locked loops, for example. One example phase detecting circuit generally includes a first input for a reference signal; a second input for an input signal to be compared with the reference signal; a set-reset (S-R) latch having a set input, a reset input, a first output, and a second output, and a delay (D) flip-flop having a logic input, a clock input, a reset input, and a logic output. The first input is connected with S-R reset input, the second input is connected with S-R set input, the first S-R output is connected with the D clock input, and the second S-R output is connected with the D reset input. The logic output of the D flip-flop indicates whether the input signal is leading or lagging the reference signal.

Abstract: A thermal mass flow meter includes a housing, a control module, a plurality of probes, a flow calculation circuit, and a heating module. The control module is installed in a containing space. The probes are connected to one terminal of the housing. The flow calculation circuit is connected to the control module, and has a plurality of circuit boards installed in the probes and a plurality of temperature sensing units connected to the circuit boards. The heating module is connected on one of the circuit boards, and connected to the control module. The control module controls the heating module to heat a working fluid in a pipeline; the flow calculation circuit senses the temperature inside the pipeline to acquire temperature change values, and transmits the temperature change values to the control module; and the control module measures the fluid velocity of the working fluid.

Abstract: A lamp includes a first housing, a second housing, a bulb base and a positioning part. The first housing has a first sidewall and a second sidewall. The first sidewall is perpendicularly connected to the second sidewall and has a first surface and a first assembling tank penetrating through the first surface. The second sidewall has a first cave. The second housing is detachably assembled to the first housing and has a second cave. These two caves form a first opening. The bulb base is embedded into the first opening. The bulb base has a base opening and multiple slots. The slots are disposed on an inner sidewall of the base opening along a circular direction. The positioning part is disposed in the first assembling tank and suitable to move along a normal direction of the first surface. The positioning part has a first push button and a latch hook.

Abstract: A liquid density sensor has a sensing module, a sensing rod and a floating device. The sensing module has a control circuit having computing functions. The sensing rod has a sensing line electrically connected to the control circuit. The floating device has a first magnetic unit and a floating ball mounted therein. The sensing rod is mounted through the floating device and the floating ball. The floating ball has a second magnetic unit. A specific gravity of the floating ball is lower than that of the floating device. The control circuit calculates a liquid density of liquid based on a distance between the first magnetic unit and the second magnetic unit according to a linear formula.

Abstract: Certain aspects of the present disclosure provide fully differential phase detectors for use in delay-locked loops, for example. One example phase detecting circuit generally includes a first input for a reference signal; a second input for an input signal to be compared with the reference signal; a set-reset (S-R) latch having a set input, a reset input, a first output, and a second output, and a delay (D) flip-flop having a logic input, a clock input, a reset input, and a logic output. The first input is connected with S-R reset input, the second input is connected with S-R set input, the first S-R output is connected with the D clock input, and the second S-R output is connected with the D reset input. The logic output of the D flip-flop indicates whether the input signal is leading or lagging the reference signal.

Abstract: A hard-sided suitcase may include a first shell portion and a complimentary second shell portion connected to the first shell portion and movable between closed position in which the first and second shell portions enclose an interior of the suitcase and an open position permitting access to the interior. The first shell portion may have a first base wall and a first side wall meeting the first base wall at a first juncture. A first design panel may be coupled to the first shell portion. The first design panel covering at least a portion of the first base wall and the first side wall and extending across the first juncture.

Abstract: A broadband circularly polarized annular ring slot antenna is disclosed, which includes a substrate, an annular ring slot antenna portion located on the upper surface of the substrate, and a microstrip feeding portion located on the lower surface of the substrate. The annular ring slot antenna portion includes a grounding unit, an annular ring slot unit, a central metal unit, a first perturbation metal unit and a second perturbation metal unit. The first perturbation metal unit and the second perturbation metal unit are extended from the grounding unit, towards the central metal unit, respectively. The microstrip feeding portion includes a vertical feeding unit, a bent feeding unit and a rectangular microstrip unit.

Abstract: The present invention provides a method and system for connecting wireless devices by receiving from a user's wireless device an environmental sound of the environment where the user is located. The method also includes obtaining a list of other wireless devices that are in the same environment as the user, according to the environmental sound and sending the list of wireless devices to the user for the user to select from the list of wireless devices one or more wireless devices for connecting.

Abstract: A phase locked loop (PLL) lock detector may be configured to observe the phase error signal from a phase comparator of a PLL circuit. The PLL lock detector may accumulate a sum of phase errors and compare the sum of phase errors to determine whether the PLL circuit is locked in phase with the reference signal. Various modifications to the phase error signal and sum of phase errors may be used to improve the efficiency of the PLL lock detector. Configurable settings for the accumulator and a comparator may be used to adjust the operation of the PLL lock detector.

Abstract: A method for forming of a thin film on a substrate is disclosed. The method includes cleaning a process chamber by flowing a first gas having fluorine. The method also includes coating the process chamber with a first encapsulating layer including amorphous silicon (A-Si) by flowing a second gas for a first duration, where the first encapsulating layer protects against fluorine contamination. The method further includes loading a substrate into the process chamber, depositing a thin film on the substrate by flowing a third gas into the process chamber and unloading the substrate from the process chamber. The thin film can include silicon nitride (SiN), the first gas can include nitrogen triflouride (NF3) gas and second gas can include silane (SiH4) gas. The thin film can be formed using plasma-enhanced chemical vapor deposition. The substrate can be a solar cell or a liquid crystal display (LCD).