Abstract: A switchable shower head includes a waterway device providing at least two water flow outlet functions; and a waterway switching device including a water diversion plate rotatable to switch between outlet functions; a fixing seat disposed above the water diversion plate; a ratchet wheel coaxially connected to and synchronously rotatable with the water diversion plate via the fixing seat and including a ratchet; a transmission element that abuts against the ratchet to cause the ratchet wheel to rotate; a transmission rack that has the transmission element slidably assembled thereto to slide in a sliding direction, that is movable with respect to the ratchet wheel in a moving direction, and that is resettable by two or more elastic elements; and a driving device that comprises a press button in communication with the fixing seat and a driver mechanism provided between the press button and the transmission rack.

Abstract: A switchable shower head includes a waterway device and a waterway switch device that has at least two outlet functions. The waterway switch device has a water diversion plate that can rotate to switch the outlet function. The waterway switch device includes a ratchet wheel, which is coaxially connected to the water diversion plate; a transmission rack, which is disposed to the waterway device and is capable of moving away or closing to the ratchet wheel, the transmission rack is reset by two or more than two elastic elements; a transmission element, which is slidably assembled to the transmission rack and is capable of abutting against the ratchet of the ratchet wheel to move the ratchet wheel to rotate, an angle is formed between the sliding direction of the transmission element and the sliding direction of the transmission rack; and a driving mechanism.

Abstract: The present invention provides a display control method and system, and a display device. The method includes acquiring a status value of a display buffer; comparing the status value of the display buffer with a preset warning value of the display buffer; and adjusting a value of a depth of outstanding bus commands according to a comparison result. In the embodiments of the present invention, a status value of the display buffer is compared with a preset warning value of the display buffer, where the status value of the display buffer reflects a change to a current load; it may be determined whether a status value of the display buffer corresponding to the current load is normal according to a comparison result; and a value of a depth of outstanding bus commands is adjusted accordingly, effectively resolve a data real-timeness issue, and ensure that an entire system efficiently runs.

Abstract: A device and method for measuring active and reactive powers of an alternating current includes receiving a first signal representing a current and a second signal representing a voltage, in which the current includes a phase offset with respect to the voltage, calculating an active power and reactive power based on the first and second signals, and calibrating the calculated active and reactive powers with respect to the phase offset using first and second constants, in which the first and second constants respectively correspond to a sine value and a cosine value of the phase offset.

Abstract: The present invention provides a display control method and system, and a display device. The method includes acquiring a status value of a display buffer; comparing the status value of the display buffer with a preset warning value of the display buffer; and adjusting a value of a depth of outstanding bus commands according to a comparison result. In the embodiments of the present invention, a status value of the display buffer is compared with a preset warning value of the display buffer, where the status value of the display buffer reflects a change to a current load; it may be determined whether a status value of the display buffer corresponding to the current load is normal according to a comparison result; and a value of a depth of outstanding bus commands is adjusted accordingly, effectively resolve a data real-timeness issue, and ensure that an entire system efficiently runs.

Abstract: A device and method for measuring active and reactive powers of an alternating current includes receiving a first signal representing a current and a second signal representing a voltage, in which the current includes a phase offset with respect to the voltage, calculating an active power and reactive power based on the first and second signals, and calibrating the calculated active and reactive powers with respect to the phase offset using first and second constants, in which the first and second constants respectively correspond to a sine value and a cosine value of the phase offset.

Abstract: A system and method for improving write integrity of a magnetic storage system. A settling algorithm counter is reset if a position error signal of the write head indicates the head is vibrating with mechanical oscillations outside a predetermined threshold.

Abstract: A system and method for improving write integrity of a magnetic storage system. A settling algorithm counter is reset if a position error signal of the write head indicates the head is vibrating with mechanical oscillations outside a predetermined threshold.

Abstract: An actuator control system for a two-stage actuator system of a disc drive has a first, or primary, stage actuator consisting of a voice coil motor that positions the head relative to a disc and a microactuator that alters the actuator system without operation of the voice coil motor. A control loop includes a controller responsive to seek commands to operate the voice coil motor, thereby moving the head relative to the disc. An active damping circuit is coupled to the head to operate the microactuator to damp resonance modes of the actuator system.

Abstract: A system for positioning a read/write head having a voice coil suitable for coarse control and a piezoelectric transducer (PZT) suitable for fine control. A voice coil control signal and a PZT control signal are generated from a position-indicative signal, both receiving power via a shared supply having a nominal rectified voltage V1. In a preferred method, control signals are both applied to the voice coil and PZT when amplified so that each has a saturation voltage smaller than |V1|.

Abstract: An actuator control system for a two-stage actuator system of a disc drive has a first, or primary, stage actuator consisting of a voice coil motor that positions the head relative to a disc and a microactuator that alters the actuator system without operation of the voice coil motor. A control loop includes a controller responsive to seek commands to operate the voice coil motor, thereby moving the head relative to the disc. An active damping circuit is coupled to the head to operate the microactuator to damp resonance modes of the actuator system.

Abstract: A system for positioning a read/write head having a voice coil suitable for coarse control and a piezoelectric transducer (PZT) suitable for fine control. A voice coil control signal and a PZT control signal are generated from a position-indicative signal, both receiving power via a shared supply having a nominal rectified voltage V1. In a preferred method, control signals are both applied to the voice coil and PZT when amplified so that each has a saturation voltage smaller than |V1|.