摘要:
A control system with a serial interface is provided. The control system includes a programmable database, a first driver, at least one second driver, and a controller. A data is written into the programmable database through a programming method. The first driver is coupled to the programmable database via the serial interface. The at least one second driver is coupled with the first driver. The controller is coupled with the serial interface and accordingly coupled to the programmable database and the first driver via the serial interface. The controller captures the data from the programmable database through the serial interface and adjusts parameters of the first driver and the at least one second driver according to the data.
摘要:
A control system with a serial interface is provided. The control system includes a programmable database, a first driver, at least one second driver, and a controller. A data is written into the programmable database through a programming method. The first driver is coupled to the programmable database via the serial interface. The at least one second driver is coupled with the first driver. The controller is coupled with the serial interface and accordingly coupled to the programmable database and the first driver via the serial interface. The controller captures the data from the programmable database through the serial interface and adjusts parameters of the first driver and the at least one second driver according to the data.
摘要:
Phase change material microcapsules are obtained using a PMMA prepolymer and an organic-solvent free synthesis process. A polymer monomer and an initiator are subject to pre-polymerization in a water bath to form Polymethyl methacrylate (PMMA) prepolymer which is then prepared to be a stabilizer aqueous solution. A phase change material is added to the stabilizer aqueous solution and liquefied in advance, and stirred to form an emulsion by a homogenizing mixer. A starting agent, a cross-linking agent and a Polymethyl methacrylate methyl ester prepolymer are added to the emulsion containing the phase-change material. The emulsion is further stirred by the homogenizing mixer for micro-emulsification which then aggregates in water bath. In this way, the process may use organic-solvent free process to pre-polymerize the polymer monomer into a Polymethyl methacrylate prepolymer and carries out encapsulation and polymerization at an oil-water interface to achieve the preparation of phase change material microcapsules.
摘要:
Some aspects of the present disclosure provide for a method of accurately simulating variations in an operating parameter, due to processing variations caused by a multi-patterning exposure, by reducing the impact of layout sections having a large width and spacing. The method assigns a skew sensitive index to one or more sections of a multi-patterning layer formed with a first mask. Runlengths of the one or more sections are respectively multiplied by an assigned skew sensitive index to determine a skew variation for each of the one or more sections. The overall skew variation sum is then determined by summing the skew variation for each of the one or more sections. By separately determining the effects of processing variations (e.g., mask misalignment) for different sections of a multi-patterning layer, an accurate measurement of operating parameter variations is achieved.
摘要:
Phase change material microcapsules are obtained using a PMMA prepolymer and an organic-solvent free synthesis process. A polymer monomer and an initiator are subject to pre-polymerization in a water bath to form Polymethyl methacrylate (PMMA) prepolymer which is then prepared to be a stabilizer aqueous solution. A phase change material is added to the stabilizer aqueous solution and liquefied in advance, and stirred to form an emulsion by a homogenizing mixer. A starting agent, a cross-linking agent and a Polymethyl methacrylate methyl ester prepolymer are added to the emulsion containing the phase-change material. The emulsion is further stirred by the homogenizing mixer for micro-emulsification which then aggregates in water bath. In this way, the process may use organic-solvent free process to pre-polymerize the polymer monomer into a Polymethyl methacrylate prepolymer and carries out encapsulation and polymerization at an oil-water interface to achieve the preparation of phase change material microcapsules.
摘要:
Structures and methods for providing a temperature independent constant current reference are provided. A constant Gm circuit is disclosed with embodiments including a voltage controlled resistor providing a current into a current mirror, the current mirror sinking a reference current at its output. By providing a feedback loop that controls the voltage controlled resistor, a temperature compensated circuit may be obtained. The temperature dependence of the voltage controlled resistor is positive and the feedback circuitry maintains this resistor at a value that compensates for the negative temperature dependence of the current mirror circuit. The reference current is thus obtained at a predetermined level independent of temperature. A method for providing a reference current is disclosed wherein a voltage dependent resistor is provided supply current to a current mirror, the voltage dependent resistor receiving a feedback voltage from the current mirror and the feedback controlling the resistor so that a temperature independent reference current is obtained.
摘要:
Structures and methods for providing a temperature independent constant current reference are provided. A constant Gm circuit is disclosed with embodiments including a voltage controlled resistor providing a current into a current mirror, the current mirror sinking a reference current at its output. By providing a feedback loop that controls the voltage controlled resistor, a temperature compensated circuit may be obtained. The temperature dependence of the voltage controlled resistor is positive and the feedback circuitry maintains this resistor at a value that compensates for the negative temperature dependence of the current mirror circuit. The reference current is thus obtained at a predetermined level independent of temperature. A method for providing a reference current is disclosed wherein a voltage dependent resistor is provided supply current to a current mirror, the voltage dependent resistor receiving a feedback voltage from the current mirror and the feedback controlling the resistor so that a temperature independent reference current is obtained.
摘要:
A Phase Lock Loop (PLL) with gain control is provided. The PLL has a dual-path configuration, where a first and a second VCO control voltage are generated in response to a phase or frequency difference between a PLL input signal and an output signal. The PLL comprises a dynamic voltage gain control (DVGC) unit and a voltage-to-current (V2I) unit, where the DVGC creates a baseline reference current in response to the first VCO control voltage and the V2I provides a substantially linear current in response to the second VCO control voltage. The currents from the DVGC and V2I are combined and fed into a current-controlled oscillator, which generates a PLL output frequency signal. Frequency gain of the VCO is substantially reduced, thus providing a PLL with improved tuning precision.
摘要:
A packaging structure and a method of fabricating the same are provided. The packaging structure includes a substrate, first packaging element disposed on the substrate, a second packaging element disposed on the substrate and spaced apart from the first packaging element, a first antenna disposed on the first packaging element, and a metal layer formed on the second packaging element. The installation of the metal layer and the antenna enhances the electromagnetic shielding effect.
摘要:
A package structure with ESD (electrostatic discharge) and EMI (electromagnetic interference) preventing functions includes: a carrier having first and second ground structures electrically insulated from one another; a semiconductor component disposed on one surface of the carrier and electrically connected to the first ground structure; and a lid member disposed to cover the carrier and the semiconductor component and electrically connected to the second ground structure. The semiconductor component and the lid member are electrically connected with the first ground structure and the second ground structure, respectively, such that electrostatic charges and electromagnetic waves can be conducted away individually without damaging the semiconductor component, thereby improving yield and reducing the risk of short circuits.