摘要:
An analog signal processing apparatus for a digital camera includes a correlated double sampling (CDS) circuit adjusting a direct current (DC) level signal from a charge coupled device (CCD) by using a black level as a reference and converting the DC level signal into a typical video signal, an automatic gain control (AGC) circuit automatically adjusting the gain of an output signal of the CDS circuit, an analog-to-digital (A/D) converter converting the analog signal from the AGC circuit into a digital image signal, a black level clamp circuit clamping the black level of the digital image signal from the A/D converter for a predetermined time interval and feeding back the clamped black level to the CDS circuit, and a clock generator generating first and second clock signals and a black level clamping signal so as to control the timing of the black level clamp circuit. The apparatus carries out a black level clamping with regard to the digital image signal that has passed through the A/D converter, thereby solving an offset problem which may occur in the conventional black level clamp circuit and A/D converter and accordingly implementing an accurate black level clamping. Further, a simplified digital comparison circuit is employed instead of a complicated analog comparator, thereby decreasing a chip area and power consumption.
摘要:
An integrator input circuit is disclosed. The circuit includes a voltage-current converting unit for converting a voltage into a current based on an amplifying and voltage dropping operation and outputting the thusly converted current, a current dividing unit for receiving an output current from the voltage-current converting unit and dividing the thusly received output current in a single form or multiple forms at a predetermined ratio, and an integrator for receiving the current in a single form or multiple forms and having a single input/output or a differential input/output for implementing an integrating operation, thereby implementing an integrator having a predetermined frequency bandwidth without adjusting a resistance or a capacitance by forming a current flowing path, by which the current from an output terminal of a voltage-current conversion unit converting an input voltage of an integrator into a current is divided at a predetermined ratio, and by inputting a part of the current into the integrator.
摘要:
A power supplying module includes a printed circuit board (PCB), a transformer, a circuit pattern, and an output terminal. The PCB includes a first socket connector protruded from a side toward a second direction. The side extends along a first direction different from the second direction. At least one corner portion of the first socket connector includes a chamfered edge connecting first and second edges respectively extending in the first and second directions. The transformer is formed on the PCB. The circuit pattern is formed on the PCB and connected to the transformer. The output terminal is formed at the first socket connector and connected to the circuit pattern.
摘要:
In a backlight assembly and a display apparatus having the backlight assembly, a plurality of lamps are housed in a housing having grounded sidewalls, where each of the lamps has at least one bend and series circuits are formed by respective sets of two or more of the bent lamps; where each series connected set of lamps is driven by an AC driving voltage of sufficient magnitude to light the series connected set of lamps, the AC driving voltage being produced by an AC step-up transformer circuit and where each series connected set has its series circuit formed by a lamp-to-lamp connection made through a grounded sidewall of the container. High and low voltage portions of each series connected set of lamps are positioned to reduce electrostatic discharge as between high voltage portions of the series and a nearby grounded sidewall of the container.
摘要:
A method for driving a light source and maintaining its target white color coordinates despite of varied and decreased light source luminance includes detecting an amount of colored light generated from a plurality of colored light sources, comparing detected colored light to reference data and verifying that colored light source has the correct preset duty cycle colored light. If the colored light source is driven by the preset duty cycle, the method includes modifying the reference data based on the detected light from the colored light source and adjusting the amount of colored light by controlling a driving signal to the colored light sources based on the modified reference data.
摘要:
In a flat-type fluorescent lamp and a liquid crystal display apparatus, the flat-type fluorescent lamp includes a lamp body having an inner space divided into a plurality of discharge channels, a venting member coupled to the lamp body, and a first external electrode formed on the lamp body. The first external electrode has an opening through which the venting member is exposed. Thus, an electric field between a bottom chassis and the external electrode is made uniform, thereby improving brightness uniformity of the flat-type fluorescent lamp.
摘要:
A surface light source device having improved electrical and mechanical characteristics is provided. The surface light source device includes a light source body including a discharge space to generate a light source, at least one external electrode, which is disposed on an outer surface of one end of the light source body, is extended in a first direction, and applies a discharge voltage to the discharge space, and at least one power transfer unit, combined with the at least one external electrode, to apply the discharge voltage to the at least one external electrode. The at least one power transfer unit is a clip-shaped and clips on the at least one electrode disposed on the outer surface of the light source body.
摘要:
A method and apparatus for polishing a substrate with a polishing pad and slurry entails washing polishing-pollutants produced by the polishing operation off of the pad in such a way that the pollutants are not splashed onto components of the polishing apparatus. A washing solution for removing the pollutants is directed onto the polishing pad as at least one free-flowing vertical stream. because the washing solution flows freely and vertically as it impinges the polishing pad, the washing solution does not rebound from the pad and flows from the surface of the polishing pad without causing the pollutants on the pad to be splashed up from the surface of the pad.
摘要:
A method and apparatus for polishing a substrate with a polishing pad and slurry entails washing polishing-pollutants produced by the polishing operation off of the pad in such a way that the pollutants are not splashed onto components of the polishing apparatus. A washing solution for removing the pollutants is directed onto the polishing pad as at least one free-flowing vertical stream. Because the washing solution flows freely and vertically as it impinges the polishing pad, the washing solution does not rebound from the pad and flows from the surface of the polishing pad without causing the pollutants on the pad to be splashed up from the surface of the pad.