摘要:
Disclosed herein is a gate driving circuit including a first clock generator to sequentially output n output clock pulses, a second clock generator to sequentially output n output control clock pulses, and a shift register to receive the n output clock pulses and the n output control clock pulses and to sequentially output a plurality of scan pulses, wherein high sections of k-th to (k+s)-th output clock pulses output during adjacent periods overlap with one another, a k-th output control clock pulse rises before the k-th output clock pulse, the k-th output control clock pulse falls before a (k−a)-th output clock pulse, a high section of the output control clock pulses does not overlap with that of the k-th output clock pulse, and a (k+b)-th output clock pulse falls during the high section of the output control clock pulses not overlapping with that of the k-th output clock pulse.
摘要:
A shift register is provided in which leakage of charges from a voltage at a set node is prevented to stabilize an output from a stage. The shift register includes stages for sequentially outputting scan pulses. An nth one of the stages includes a node controller for controlling voltages at nodes, and an output unit for outputting any one of a corresponding one of the scan pulses and a first discharging voltage according to the voltages at the nodes. The nodes include set and reset nodes. The node controller of the nth stage includes a first switching device controlled by a voltage supplied to the reset node for supplying a second discharging voltage to the set node, and an inverter circuit controlled by a voltage supplied to the set node for supplying any one of a charging voltage and a third discharging voltage to the reset node.
摘要:
An optical pickup device including a dual wavelength light source module for emitting a selected one of two light beams having different wavelengths, a dual grating for splitting, into three beams, the selected light beam emitted from the dual wavelength light source, and a hologram for focusing the three beams of the selected light beam onto a photodetector having typical 8-section patterns such that the three beams of the selected light beam are focused onto the same spots as those of the other light beam, respectively.
摘要:
A light scanning unit including a light source unit emitting a collimated light beam, and a beam deflector deflecting and scanning the collimated light beam and having a mirror surface that oscillates, a light scanning method and an image forming apparatus employing the light scanning unit are disclosed. The light source unit may be made to oscillate synchronously with the oscillation of the beam deflector so that the incident angle of the collimated light beam on the beam deflector changes in synchronization with the oscillation of the beam deflector, thereby allowing an increase of the maximum deflection angle of the light beam deflected and scanned by the beam deflector.
摘要:
An optical pickup device including a dual wavelength light source module for emitting a selected one of two light beams having different wavelengths, a dual grating for splitting, into three beams, the selected light beam emitted from the dual wavelength light source, and a hologram for focusing the three beams of the selected light beam onto a photodetector having typical 8-section patterns such that the three beams of the selected light beam are focused onto the same spots as those of the other light beam, respectively.
摘要:
An apparatus for auto-focusing detection, a camera applying the same, and a method for calculating a distance to a subject are disclosed. The camera calculates a focusing control state based on synthetic image data output as an image passing through a pupil split unit provided with a filter arranged at one or more of the at least two holes as taken by an image pickup unit.
摘要:
A camera and a method for performing auto-focusing applying thereto are provided. The camera adjusts a focus using two auto-focusing methods if specific photographing conditions are satisfied.