摘要:
An electronic device and a temperature modulation method are disclosed herein. The electronic device includes a system body, a heat pipe module, a fan module, an orientation sensor, a temperature sensor and a control module. The system body includes an electronic component. The heat pipe module is connected to the electronic component. The fan module is installed in the system body. The orientation sensor can detect an orientation of the system body and output an orientation-sensing signal based on the orientation. The temperature sensor can detect a temperature of the heat pipe module and output a temperature-sensing signal based on the temperature. The control module can control rotation of the fan module according to at least one of the orientation-sensing signal and the temperature-sensing signal.
摘要:
A fan rotation speed control system for controlling rotation speed of a fan is provided. The system has: a fan rotation speed controller, coupled to the fan, for receiving a signal value to produce a driving voltage to the fan and detecting an actual rotation speed of the fan; and a master controller, coupled to the fan rotation speed controller, for providing the signal value and recalculating the signal value by comparing the actual rotation speed with a target rotation speed.
摘要:
A faucet includes a faucet body, a handle, a temperature detector, a control unit, and an electromagnetic valve. When in use, by co-operation and control of the temperature detector and the electromagnetic valve, water whose temperature has reached the preset value will flow out of the water outlet of the faucet body for use with a user, while water whose temperature does not reach the preset value will not flow out of the water outlet of the faucet body and can flow into the water drain port of the faucet body so that the unused water can be recycled and reused completely without incurring any consumption so as to achieve a water-saving purpose.
摘要:
According to one aspect, an optical read/write device for reading and/or writing an optical disk includes a rack disposed between the worm gear and the optical pickup head for transferring motion from the worm gear to the optical pickup head. The rack includes a fastening portion for fixing the rack to the optical pickup head, an engaging portion, a spring placed between the fastening portion and the engaging portion for pressing the engaging portion to engage with the worm gear, and a connecting portion. The connecting portion is configured for connecting the fastening portion and the engaging portion and preventing the engaging portion from disengaging from the worm gear.
摘要:
The present invention provides a power-saving laser pointer mouse including a battery, a micro-controller and a laser diode. The power-saving laser pointer mouse can be operated in multi-stage power-saving modes according to the voltage value of the battery. The lighting time interval of the laser diode is adjusted by the micro-controller according to the voltage value of the battery. When the voltage value of the battery is reduced, the lighting time interval of the laser diode is shortened so as to achieve the power-saving purpose.
摘要:
A guide mechanism is configured for guiding an optical pick-up head to move on a chassis. The guide mechanism includes a carriage, a first guide rail, a second guide rail, and a buffering device. The carriage includes a main body for receiving the optical pick-up head, and a first engaging portion and a second engaging portion formed on two opposite sides of the main body. The first guide rail is slidably received in a slot of the first engaging portion. The second guide rail is slidably engaging with the second engaging portion. The buffering device is clipped between the first guide rail and the first engaging portion. An optical disk drive using the guide mechanism is also provided.
摘要:
According to one aspect, an optical read/write device for reading and/or writing an optical disc includes a base, optical pickup head, and a driving mechanism for slidably driving the optical pickup head. The driving mechanism includes a worm gear, a motor for rotating the worm gear, and a rack disposed between the worm gear and the optical pickup head for transferring motion from the worm gear to the optical pickup head. The rack includes a fastening portion for fixing the rack to the optical pickup head, a mesh portion for engaging with the worm gear, a restricting portion connected to the mesh portion for being blocked by the gear seat when the mesh portion is pressed by the worm gear to prevent the mesh portion from disengaging from the worm gear, and a connecting portion for connecting the fastening portion with the restricting portion.
摘要:
A computer graphics display system contains a graphics processing unit. A graphics processing unit extracts the display information needed for executing graphics display from system memory via the north bridge according to the graphics display command from the CPU and then processes the display information. The display information is stored directly in the system memory so that the graphics processing unit can directly access the system memory without the use of a graphics buffer. This lowers the system cost.
摘要:
A method for minimizing idle time of a controller in a graphics system, which includes a graphics memory and a graphics accelerating device that interconnects the controller and the graphics memory, is disclosed. The graphics accelerating device includes a command register for storing command signals from the controller therein, and a graphics engine for receiving and executing the command signals stored in the command register one at a time. The method includes the steps of: detecting whether number of the command signals in the command register which are yet to be executed by the graphics engine has reached a predetermined threshold number; transferring the command signals, which are yet to be executed by the graphics engine, from the command register to a reserved space of the graphics memory when the predetermined threshold number is reached so as to permit the controller to store continuously the command signals in the command register in order to minimize idle time of the controller; and determining whether the reserved space of the graphics memory contains the command signals transferred from the command register, and providing the command signals in the reserved space of the graphics memory, instead of the command signals stored in the command register, one at a time to the graphics engine for execution by the graphics engine.
摘要:
A protective device including a substrate, a conductive section and a bridge element is provided. The conductive section is supported by the substrate, wherein the conductive section comprises a metal element electrically connected between first and second electrodes. The metal element serves as a sacrificial structure having a melting point lower than that of the first and second electrodes. The bridge element spans across the metal element in a direction across direction of current flow in the metal element, wherein the bridge element facilitates breaking of the metal element upon melting.