摘要:
A microinjector head with a driving circuit and the manufacturing method of the microinjector head are shown. The microinjector head uses a bubble as a virtual valve to eject fluid. The microinjector head has a manifold, chambers, a pair of first and second bubble generators, orifices, and a driving circuit. The driving circuit is used to control the pair of first and second bubble generating devices and eject fluid inside the corresponding chamber from the corresponding orifice. In addition, because the driving circuit and the bubble generators are integrated on a single substrate, the number of manufacturing processes is reduced and the circuit devices and connecting circuits of the. microinjector array are fewer.
摘要:
A safety socket for avoiding danger of shock due to insertion of alien article into the insertion hole. The socket is disposed with three spaced partitioning boards defining three apartments. The partitioning boards are arranged according to the direction of the arrangement of the insertion holes of the socket. Three wedge-shaped insulative slide boards are disposed on the partitioning boards, which are left and right slidable within the apartments. Three short leaf springs and three sets of leaf spring seats are respectively disposed in the apartments. A leaf spring extends from each leaf spring seat to contact with a corresponding short leaf spring. The slide board is restricted to resiliently reciprocally slide within a slot formed on the leaf spring seat. By means of the leaf spring, when the plug is not inserted into the socket, the short leaf spring or the leaf spring always pushes the slide board in a direction reverse to the corresponding leaf spring, whereby the leaf spring is normally in an open state. Reversely, when the plug is inserted into the socket, each two corresponding leaf springs contact with each other into a powered on state. When an alien article is inserted into one insertion hole, the alien article will push the slide board on one side to move, whereby the insertion hole on the other side is powered on, while the insertion hole on the insertion side is not powered on so as to avoid danger of shock.
摘要:
An automatic power control system, an automatic power control method, a down sampling circuit and a down sampling method. The automatic power control system is incorporated in an optical disc drive comprising a laser diode for receiving a control signal to generate a laser beam; and a photodetector for detecting the laser beam to generate an analog input signal. The automatic power control system comprises an analog-to-digital converter, a down sampling circuit, a comparator, and a digital-to-analog converter. The analog-to-digital converter converts the analog input signal to digital data. The down sampling circuit, coupled to the analog-to-digital converter, comprises a down sampler, a counter, and a controller. The down sampler receives a predetermined amount of digital data to generate representation data. The counter, coupled to the down sampler, calculates the amount of digital data, and resets the down sampler when the amount equals or exceeds the predetermined count. The controller, coupled to the counter, disables the counter when the digital data is invalid. The comparator, coupled to the down sampling circuit, compares the representation data with predetermined target data to generate error data. The digital-to-analog converter, coupled to the comparator, converts the error data to analog to generate the control signal.
摘要:
A method for deriving precise control over laser power of an optical pickup unit (OPU) includes: providing an analog-to-digital converter (ADC) within an automatic power calibration (APC) circuit to derive a path gain and/or a path offset from the APC circuit; and selectively performing compensation according to the gain and/or the path offset, in order to maintain precision of a relationship between the laser power and a target command utilized for controlling the laser power. An associated APC circuit comprising an ADC and at least one compensation module is further provided. The ADC is utilized for deriving a path gain and/or a path offset from the APC circuit. The compensation module is utilized for selectively performing compensation according to the path gain and/or the path offset, in order to control the laser power by a target command.
摘要:
The invention provides a sliding mechanism and an electronic device using the same. The sliding mechanism includes a bottom plate, a connection rod, a cover plate, an elastic member, and a connection member. Guiding sections are formed at two sides of the bottom plate, and the bottom plate has a first fastening hole and an arc-shaped groove. The connection rod has a first end and a second end. Sliding portions are formed at two sides of the cover plate to cooperate with the guiding sections to enable the cover plate to slide relative to the bottom plate, and the cover plate has a second fastening hole and a connection hole. The elastic member includes a third end and a fourth end. Furthermore, the connection member slidably fastens the fourth end of the elastic member and the second end of the connection rod to the arc-shaped groove through the connection hole.
摘要:
A fixing device is provided. The fixing device is fixed to a surface, comprising a sucker, a rack, a gear, a transforming unit and a limiting unit. The rack is connected to the sucker. The gear is engaged to the rack. The transforming unit is connected to the gear. The transforming unit rotates the gear to move the rack between a first position and a second position. The rack pushes the sucker to apply a suction force to the surface when the rack is in the first position, and the suction force of the sucker is released when the rack is in the second position. The limiting unit is connected to the rack to restrict the rack.
摘要:
An automatic power control system, an automatic power control method, a down sampling circuit and a down sampling method. The automatic power control system is incorporated in an optical disc drive comprising a laser diode for receiving a control signal to generate a laser beam; and a photodetector for detecting the laser beam to generate an analog input signal. The automatic power control system comprises an analog-to-digital converter, a down sampling circuit, a comparator, and a digital-to-analog converter. The analog-to-digital converter converts the analog input signal to digital data. The down sampling circuit, coupled to the analog-to-digital converter, comprises a down sampler, a counter, and a controller. The down sampler receives a predetermined amount of digital data to generate representation data. The counter, coupled to the down sampler, calculates the amount of digital data, and resets the down sampler when the amount equals or exceeds the predetermined count. The controller, coupled to the counter, disables the counter when the digital data is invalid. The comparator, coupled to the down sampling circuit, compares the representation data with predetermined target data to generate error data. The digital-to-analog converter, coupled to the comparator, converts the error data to analog to generate the control signal.
摘要:
The invention provides an apparatus for controlling servo signal gains of an optical disc drive. The apparatus adjusts the gains of a plurality of servo signals controlling a servo system of the optical disc drive when the optical disk drive encounters an operating state transition. In a first mode, at least one AGC loop of the apparatus compensates the gains of the servo signals with a selectable bandwidth during a specific period after the operating state transition to accelerate the convergence of the servo signals. In a second mode, at least one AGC loop of the apparatus reloads the previously saved convergence values or pre-determined values as the initial values according to the current operating state immediately after the operating state transition to accelerate the convergence of the servo signals.
摘要:
A device for processing a radio frequency (RF) signal of an optical disk drive includes a high-pass (HP) filter, an RF variable gain amplifier (VGA), an RF analog-digital converter (ADC), and a digital module. The HP filter filters the RF signal and is capable of selectively utilizing one of a first cut-off frequency and a second cut-off frequency. The RF VGA amplifies the filtered RF signal. The RF ADC converts the amplified RF signal into a digital code. The digital module is capable of executing a first function and a second function with the digital code. The HP filter utilizes the first cut-off frequency when the digital module desires to execute the first function, and the HP filter utilizes the second cut-off frequency when the digital module desires to execute the second function.
摘要:
A signal processing apparatus includes sample and hold units for holding a plurality of analog photo diode signals. A signal holding controller generates control signals to the sample and hold units for holding the analog photo diode signals. Analog adjusting modules adjust the held analog photo diode signals. A multiplexer selectively couples one input end of the multiplexer to the output end of the multiplexer for outputting the adjusted analog photo diode signals. An analog to digital converter converts the adjusted analog photo diode signals into digital photo diode signals.