摘要:
Disclosed herein is a flyback converter with a synchronous rectifier which is applied to a power supply of a portable computer such as a notebook PC. The flyback converter is operated in a critical conduction mode to turn on/off a main switch at a zero crossing point of an output voltage. The flyback converter is also adapted to supply a driving voltage to a synchronous switch using the output voltage. Therefore, there is no need for a secondary auxiliary coil of a transformer and for a Schottky diode to be connected in parallel with the synchronous switch, resulting in simplification in circuit design.
摘要:
Disclosed herein is a variable-frequency flyback. The flyback converter comprises a flyback transformer having secondary windings for drive and detection for providing first and second induced voltages induced from an input voltage in first and second turn ratios with a primary winding, respectively, a voltage detector for detecting the second induced voltage, a switching controller for determining, on the basis of a level of the voltage detected by the voltage detector, whether a current load state is the mini load state and outputting a first switching signal according to a result of the determination, a first switch for switching the supply of the second induced voltage in response to the second induced voltage and the first switching signal, and a synchronous rectifier for performing a switching operation depending on a state of the first switch, the synchronous rectifier having its source and drain connected to any one of a voltage output line or ground line connected to the drive secondary winding and its gate connected to the first switch.
摘要:
A liquid crystal display device having robust post spacers has a transparent insulation substrate on which a black matrix is formed. Red, green and blue color filters in each of the sub pixels defined by the black matrix are then formed. An overcoating layer is formed on the color filters and the black matrix. A post spacer is formed surrounding the four sides of each of the sub-pixels wherein red, green and blue color filters formed and having a groove on the middle portion of each of the sides surrounded. A liquid crystal layer is formed by polymer dispersed liquid crystal. A liquid crystal layer consisting of a polymer dispersed liquid crystal is formed on the overcoating layer including the post spacer.
摘要:
A heat exchanger for common use for both a boiler and a hot water supply is provided, which includes a plurality of inner plate members (110) having inner plate member grooves formed on either side of the upper end thereof, and a burner provided on the bottom surface thereof, to thereby perform a combustion chamber function; combustion heat fin tubes (120) formed of a number of heat exchange tubes on the outer circumferential surface of which transfer heat fins are formed; an insulation member (130) which is installed in an identical area along the inner walls of the inner plate members; and an independent heat exchanger body which is connected with the combustion heat fin tubes. Thus, a heat exchanger for a condensing or noncondensing gas boiler can be manufactured at low cost, through the common heat exchanger Further, two kinds of heat exchangers can be manufactured through a single common heat exchanger to thereby make an additional process unnecessary.
摘要:
Provided are a microprocessor suitable for constructing a multi-processor system and a method for controlling the reset and processor ID of the microprocessor. The microprocessor includes decoder receiving a reset ID having a predetermined binary value and a reset signal and decoding the reset ID, an ID generator receiving the decoding result of the decoder and generating at least one microprocessor ID and a reset ID of a microprocessor serially connected to the microprocessor, and a reset vector unit selecting a reset vector according to the decoding result of the decoder. The multi-processor system is constructed such that independent microprocessors of the system respectively generate their own reset vectors and processor IDs when a reset signal is input to the multi-processor system to initialize it. Thus, all the microprocessors of the system can be simultaneously started up when the reset signal is disabled. Accordingly, a resetting process in the multi-processor system is simplified, a period of time required for starting up the microprocessor is reduced, and the multi-processor system is easily designed.
摘要:
A ventilation apparatus includes a stator, a vibrator arranged close to the stator, a permanent magnet to generate a magnet flux to form a path of the magnet flux along the stator and the vibrator, a coil wound around the stator or vibrator, and a ventilator coupled to the vibrator and operated by a linear reciprocating motion of the vibrator generated when an electric current is applied to the coil to change the magnet flux of the permanent magnet. Thus, the ventilation apparatus having a simplified ventilation structure increases a ventilation efficiency.
摘要:
Provided is an on-chip serialized peripheral bus system and method of operating the same, wherein when a plurality of low-speed peripherals are connected to a system that employs a high-speed parallel bus, the existing parallel bus system for connecting the low-speed peripheral becomes serialized, thereby reducing a bus width of the parallel bus as well as improving a connection response time of the low-speed peripheral, and reducing a simultaneous transition frequency of the peripheral connection bus system to improve the performance of the overall system.
摘要:
The present invention relates to a fungicidal composition for agricultural use, comprising Chloranthus henryi extract or a novel sesquiterpene compound separated from Chloranthus henryi extract as an active ingredient, and in particular it relates to a fungicidal composition supported by the findings that Chloranthus henryi extracts or a novel sesquiterpene compound has potent antifungal activities against phytopathogenic fungi.
摘要:
The present disclosure provides method, system, and computer readable medium for shared execution of software. The present disclosure relates to method, system, and computer readable recording medium for shared execution of software involving identifying the main modules of a specific software by analyzing its control flow, data flow, and modular structure through a static binary analysis and a runtime profiling, i.e. dynamic analysis, separating the modules from the main software body to store them in a secure environment of a smart card, and storing the main body in a user terminal with the identified modules removed and replaced by an interface code, whereby a co-processing the software at the user's end by the smart card in engagement with the user terminal exclusively enables an execution of the software.
摘要:
The present invention relates to a marker for predicting a gastric cancer prognosis, a composition and a kit for predicting gastric cancer prognosis comprising an agent for measuring the expression level thereof, and a method for predicting gastric cancer prognosis using the marker. According to the present invention, gastric cancer prognosis may be predicted promptly and accurately, and an appropriate treatment plan can be determined based on the predicted prognosis, which has an advantage of contributing to significant reduction of death caused by gastric cancer. Particularly, according to the present invention, the survival rate can be remarkably increased by using the treatment method for a stage III gastric cancer patient to a patient who has been predicted to have a negative prognosis among stage Ib/II gastric cancer patients.