Abstract: A Totem Pole PFC circuit includes at least one fast-switching leg, a slow-switching leg, and a control unit. Each fast-switching leg includes a fast-switching upper switch and a fast-switching lower switch. The slow-switching leg is coupled in parallel to the at least one fast-switching leg, and the slow-switching leg includes a slow-switching upper switch and a slow-switching lower switch. The control unit receives an AC voltage with a phase angle, and the control unit includes a current detection loop, a voltage detection loop, and a control loop. The control loop generates a second control signal assembly to respectively control the slow-switching upper switch and the slow-switching lower switch. The control loop controls the second control signal assembly to follow the phase angle, and dynamically adjusts a duty cycle of the second control signal assembly to turn on or turn off the slow-switching upper switch and the slow-switching lower switch.

Abstract: In order to maintain the white balance ratio of the mixed white light, a pixel unit is provided, which is composed of four sub-pixels of red, green, blue, and another green colors, and these sub-pixels are composed of a red LED element, a first green LED element, a blue LED element and a second green LED element. A control element is used to control the four sub-pixels of red, first green, blue and second green correspondingly by outputting control signals through the control channels. Base on the adjustment of the current, the brightness ratio of the above three colors is still maintained at the ratio of 3:6:1 of the white balance, and the ratio of the white balance of the white light after being mixed is also maintained.

Abstract: A ceramic control valve may include a shell, a valve stem, a driving valve piece, a fixed valve piece, and a buffer member. The shell has an axial hole at the center portion thereof, and the axial hole comprises a first hole portion and a second hole portion. The lower end of the axial hole has an engaging periphery protruding from the inner periphery of the axial hole, and the first hole portion has at least a water outlet laterally penetrating through the shell. The valve stem comprises a driving end, an adjustment section, and a control shaft sequentially connected together, and a rotating base is securely engaged on the driving end, and the driving end is connected to the driving valve piece through the rotating base. The adjustment section has a plurality of peripheral grooves thereon, and each peripheral grooves comprises a torque adjustment ring disposed thereon.

Abstract: A gas-liquid mixer may include a connector, a main body, a mixing base, and a locating ring. The connector has a water inlet and a water outlet, and a first flow channel and a second flow channel are formed separately in the connector. The main body comprises a first tube body and a second tube body at one end, and a housing axially is formed at the other end thereof. At least a locating tube is formed inside the housing, and the inner tube portion of the locating tube penetrates through the bottom of the housing. The mixing base has an air duct formed at the center thereof, and a closed end is formed at one end of the air duct, and at least one horizontal through space formed corresponding to the locating tube in both quantity and position is positioned at the outer side of air duct.

Abstract: A driving device includes a pulse intensity modulation module, a pulse width modulation module, a pulse density modulation module, and a driving module. The pulse intensity modulation module receives an image processing signal related to a pixel and generates a pulse intensity according to the image processing signal. The pulse width modulation module receives the image processing signal and generates a pulse width according to the image processing signal. The pulse density modulation module receives the image processing signal and generates a pulse density according to the image processing signal. The driving module receives the pulse intensity, the pulse width, and the pulse density and generates a driving signal to the pixel according to the pulse intensity, the pulse width, and the pulse density.

Abstract: A power supply and a power saving method thereof are provided. The power saving method includes: utilizing a monitoring circuit within the power supply to generate a monitoring signal according to operating loading of the power supply; and utilizing a control signal generating circuit within the power supply to generate a control signal according to the monitoring signal, to drive at least two switch transistors within a circuitry within the power supply, wherein the switch transistors are connected in parallel.

Abstract: An ozone water control valve may include a first water outlet head, a first connector, and a rotary knob. The first water outlet head has a water chamber axially penetrating through the first water outlet head, and a lateral hole is formed at the lateral side of the first water outlet head to communicate with the water chamber. The first connector comprises an annular base, a rotary control section, and a connecting section, and the connecting section is connected to an ozone device. The ozone device is connected to the first water outlet head through the first connector and the lateral hole, and with the rotary knob, the water control valve can be switched between the ozone water and tap water quickly and accurately, so as to greatly improve the convenience of use.

Abstract: A medical image assistance system and a medical image assistance method are provided. During a medical process, an image capturing apparatus located at a local location captures a first image and transmits the first image to a control device located at the local location, and the control device transmits the first image captured by the image capturing apparatus to an electronic apparatus located at a remote location. The electronic apparatus performs a marking operation on the first image to generate a second image, and transmits the second image to the control device. The control device transmits the second image to a head-mounted display apparatus located at the local location so that the head-mounted display apparatus simultaneously displays the second image and a real-time local image. The first image and the second image are at least partially the same in content.

Abstract: A water control valve may include a three-way pipe, an inner tube, an outer threaded tube, and a control valve. The three-way pipe integrally formed in T-shape has a water inlet end and a first connecting end which are longitudinally communicated, and a water outlet end communicated with the water inlet end and first connecting end is extended toward the lateral direction, to form the T-shape pipe. A small section's diameter is smaller than the water inlet end, and the bottom portion of the small section comprises an abutting portion, and a first water inlet hole axially penetrates through the abutting portion. One end of the inner tube is top-down inserted through the first connecting end into the small section of the three-way pipe, and a water stop periphery having a diameter larger than the inner tube is formed at the other end of the inner tube.

Abstract: A Totem Pole PFC circuit includes at least one fast-switching leg, a slow-switching leg, and a control unit. Each fast-switching leg includes a fast-switching upper switch and a fast-switching lower switch. The slow-switching leg is coupled in parallel to the at least one fast-switching leg, and the slow-switching leg includes a slow-switching upper switch and a slow-switching lower switch. The control unit receives an AC voltage with a phase angle, and the control unit includes a current detection loop, a voltage detection loop, and a control loop. The control loop generates a second control signal assembly to respectively control the slow-switching upper switch and the slow-switching lower switch. The control loop controls the second control signal assembly to follow the phase angle, and dynamically adjusts a duty cycle of the second control signal assembly to turn on or turn off the slow-switching upper switch and the slow-switching lower switch.

Abstract: An instant intelligent communication system for strangers is disclosed. The system includes a registration module, a business management module and a communication module. The registration module generates a personal unique identification code. The business management module issues or acquires business information. The communication module initiates a communication establishment request according to the personal unique identification code or the business information. The communication establishment module receives the communication establishment request and establish communication. The communications can be initiated and established through the business information issued on the Internet platform server, so that the business docketing is formed, and the business communication capability is greatly facilitated.

Abstract: A vacuum breaker valve may include a valve body, a non-return member, a waterstop, and an abutting member. The valve body has a water inlet end and a water outlet end, and the valve body is connected to a pipe so as the water flows from the water inlet end to the water outlet end. The valve body has a shoulder portion and a stepped portion on the inner wall thereof, and the top surface of the shoulder portion comprises at least a first through hole downwardly penetrating the outer wall of the valve body. The shoulder portion is located below the stepped portion, and the stepped portion is formed in two steps shape, which has a vertical first abutting edge, a horizontal second abutting edge, and a vertical third abutting edge in sequence.

Abstract: Medical imaging equipment and a medical imaging method are provided. The medical imaging equipment includes medical equipment, a controller, and a head-mounted display. The medical equipment is configured to investigate a body portion and output a first image signal corresponding to the body portion. The first image signal has a first resolution. The controller is coupled to the medical equipment to receive the first image signal and convert the first resolution of the first image signal to a second image signal having a second resolution. The head-mounted display is coupled to the controller to display a display image of the second image signal. The head-mounted display has a direction line. When the head-mounted display faces the body portion, the display image and the body portion are located along to the direction line.

Abstract: A projection system and a projection method are provided. The projection system includes a projection device, a streaming device, and a control device. The projection device includes a first image input port and a second image input port. The streaming device is electrically connected to the first image input port of the projection device and is coupled to the projection device in a detachable manner. The control device is communicatively connected to the streaming device. The control device transmits a first command signal to the streaming device, so that the projection device projects image data from the streaming device. The projection method may be executed by the projection system. The projection system and the projection method of the disclosure provide a user with more convenient operation environment and operation interface.

Abstract: A power supply and a power saving method thereof are provided. The power saving method includes: utilizing a monitoring circuit within the power supply to generate a monitoring signal according to operating loading of the power supply; and utilizing a control signal generating circuit within the power supply to generate a control signal according to the monitoring signal, to drive at least two switch transistors within a circuitry within the power supply, wherein the switch transistors are connected in parallel.

Abstract: A medical image assistance system and a medical image assistance method are provided. During a medical process, an image capturing apparatus located at a local location captures a first image and transmits the first image to a control device located at the local location, and the control device transmits the first image captured by the image capturing apparatus to an electronic apparatus located at a remote location. The electronic apparatus performs a marking operation on the first image to generate a second image, and transmits the second image to the control device. The control device transmits the second image to a head-mounted display apparatus located at the local location so that the head-mounted display apparatus simultaneously displays the second image and a real-time local image. The first image and the second image are at least partially the same in content.

Abstract: Medical imaging equipment and a medical imaging method are provided. The medical imaging equipment includes medical equipment, a controller, and a head-mounted display. The medical equipment is configured to investigate a body portion and output a first image signal corresponding to the body portion. The first image signal has a first resolution. The controller is coupled to the medical equipment to receive the first image signal and convert the first resolution of the first image signal to a second image signal having a second resolution. The head-mounted display is coupled to the controller to display a display image of the second image signal. The head-mounted display has a direction line. When the head-mounted display faces the body portion, the display image and the body portion are located along to the direction line.

Abstract: A projection system and a projection method are provided. The projection system includes a projection device, a streaming device, and a control device. The projection device includes a first image input port and a second image input port. The streaming device is electrically connected to the first image input port of the projection device and is coupled to the projection device in a detachable manner. The control device is communicatively connected to the streaming device. The control device transmits a first command signal to the streaming device, so that the projection device projects image data from the streaming device. The projection method may be executed by the projection system. The projection system and the projection method of the disclosure provide a user with more convenient operation environment and operation interface.

Abstract: An image processing and signal transmitting device comprises an Ethernet connection port, a magnetic circuit, a power transmission circuit, and a computing circuit. The Ethernet connection port electrically connects to a set of signal equipment and receives a power signal and a first control signal provided by the set of signal equipment. The magnetic circuit outputs the power signal via a first port and outputs the first control signal via a second port. The power transmission circuit converts a supplying power of the power signal into a DC device power and outputs a first power and outputs a second power to the camera according to the DC device power. The computing circuit receives the first power and an image signal generated by the camera, generates a second control signal according to the image signal, and send one of the first and second control signals to the camera.

Abstract: A power supplying and image processing system adapted to a camera comprises a boost converter, an Ethernet power circuit, a signal conversion circuit, and a host. The boost converter receives an input power to boost and output thereof. The Ethernet power circuit receives the boosted power to output a DC device power to the camera, and forwards an image signal captured by the camera. The signal conversion circuit has a first interface and a second interface with different types, receives the image signal through the electrical connection between the first interface and the Ethernet power circuit, and converts a format of the image signal. The host obtains the format-converted image signal to perform an AI operation to generate a control signal to control operations of the camera or to show an image corresponding to the format-converted image signal the on a display device.