摘要:
A method and apparatus for removing false contours in a pulse number modulation (PNM) digital display device having a plasma display panel (PDP). The method involves a) comparing the input data with the comparison data and calculating a plurality of possible output data in consideration of an index error between the input data and error-diffused input data so that the false contours can be removed, the error-diffused input data being obtained by diffusing a quantization error that has occurred in pixels adjacent to the input data in the current frame; b) detecting an index error between the input data and the error-diffused input data; and c) selecting one from among the plurality of possible output data obtained in step a) in consideration of the index error detected in step b).
摘要:
An apparatus and method for driving a display panel, and more particularly, an apparatus and method for easily generating a programmable signal to drive a digital display panel without re-designing a drive signal generating apparatus according to the specifications of the digital display panel including its size, the number of scan lines, and types of input signals. The apparatus includes a memory, a decoder, and an output waveform generating circuit. The memory stores information to generate a plurality of drive pulse signals necessary for driving the display panel. The decoder reads information stored in an address assigned according to a predetermined control sequence from the memory and then edits the read information so as to be suitable for specifications of the display panel. The output waveform generating circuit generates drive pulse signals corresponding to the information read by the decoder.
摘要:
Provided are a stacked-type semiconductor package using a stud bump, a semiconductor package module, and a method of fabricating the stacked-type semiconductor package. The stacked-type semiconductor package may include a first semiconductor package and a second semiconductor package stacked on the first semiconductor package. The first semiconductor package may include a first circuit board and at least one conductive member extending upward from the first circuit board. The second semiconductor package may include a second circuit board, and a stud bump being inserted from the second circuit board into the at least one conductive member of the first semiconductor package in order to electrically connect the first semiconductor package and the second semiconductor package.
摘要:
Provided is a component mounter. The component mounter comprises: a bed; a component supply unit; a conveyor transferring at least one PCB to a specified mounting position; a plurality of head units having at least one nozzle for picking up the electronic component from the component supply unit and for mounting it to the PCB; first and second Y axis transfer mechanisms; an X axis transfer mechanism having a first end of mounted to the first Y axis transfer mechanism and the second end mounted to the second Y axis transfer mechanism; a first driving unit controlling the movement of the first end of the X axis transfer mechanism along Y axis; and a second driving unit controlling the movement of the second end of the X axis transfer mechanism along the Y axis, independently of the first driving unit.
摘要:
Provided are a tape feeder for use in chip mounters that can reduce a chip feeding duration and prevent chips from being turned over or assuming wrong postures to feed the chips stably, and a chip mounting method. The tape feeder includes a second link having one end linked to a link shaft through which a first link and a pivot lever are combined and the other end in which a slot curved at a predetermined inclination is formed. The velocity at which a carrier tape is fed changes according to the inclination of the curve of the slot with respect to the moving direction of the first link, the curve contacting the contact unit upon the movement of the first link in a direction helping to rotate a ratchet gear.
摘要:
Provided are a tape feeder for use in chip mounters that can reduce a chip feeding duration and prevent chips from being turned over or assuming wrong postures to feed the chips stably, and a chip mounting method. The tape feeder includes a second link having one end linked to a link shaft through which a first link and a pivot lever are combined and the other end in which a slot curved at a predetermined inclination is formed. The velocity at which a carrier tape is fed changes according to the inclination of the curve of the slot with respect to the moving direction of the first link, the curve contacting the contact unit upon the movement of the first link in a direction helping to rotate a ratchet gear.
摘要:
A document feeder of an image forming apparatus includes a guide that arranges a width of a recording medium. A recording medium pickup module picks up the recording medium. A recording medium pickup module shifting unit shifts the recording medium pickup module in association with the movement of the guide. The recording medium pickup module includes a guide rack connected to the guide at one end. A pinion unit supports reciprocating motion of the guide rack. A pickup rack engaged with the pinion unit linearly reciprocates in parallel with the guide rack, and is connected to the recording medium pickup module.
摘要:
A paper-guiding device, an image forming apparatus having the same, and a method thereof. The paper-guiding device includes at least one paper guide movably disposed at a paper tray to line up and hold printing papers, a guide conveying unit to convey the at least one paper guide, and a position adjusting unit to control operations of the guide conveying unit, to detect a position of the at least one paper guide and to control a stop position of the at least one paper guide based on the detected position of the at least one paper guide.
摘要:
Provided are a tape feeder for use in chip mounters that can reduce a chip feeding duration and prevent chips from being turned over or assuming wrong postures to feed the chips stably, and a chip mounting method. The tape feeder includes a second link having one end linked to a link shaft through which a first link and a pivot lever are combined and the other end in which a slot curved at a predetermined inclination is formed. The velocity at which a carrier tape is fed changes according to the inclination of the curve of the slot with respect to the moving direction of the first link, the curve contacting the contact unit upon the movement of the first link in a direction helping to rotate a ratchet gear.
摘要:
Provided are a tape feeder for use in chip mounters that can reduce a chip feeding duration and prevent chips from being turned over or assuming wrong postures to feed the chips stably, and a chip mounting method. The tape feeder includes a second link having one end linked to a link shaft through which a first link and a pivot lever are combined and the other end in which a slot curved at a predetermined inclination is formed. The velocity at which a carrier tape is fed changes according to the inclination of the curve of the slot with respect to the moving direction of the first link, the curve contacting the contact unit upon the movement of the first link in a direction helping to rotate a ratchet gear.