Plasma display panel drive method and apparatus
AssigneeLG Electronics Inc.
InventorsGeun-Soo Lim, Woo Hyun Paik, Jeong Pil Choi, Eun Ho Yoo, Myung Ho Park
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Abstract
A PDP drive method capable of restraining the generation of contour noise and making to be high a brightness level. In the PDP drive method, discharging cells on the plasma display panel start simultaneously on a radio frequency discharge by row lines. Next, the radio frequency discharge, which is caused in each discharging cell on the row line, is erased by applying an erasing pulse corresponding to a brightness level of video to the discharging cells on a row line.
Claims24
A method for driving a plasma display panel using a radio-frequency discharge, comprising:
- allowing discharging cells on the plasma display panel to start simultaneously on a radio frequency discharge by a row line;
- sustaining the radio frequency discharge in the discharging cells for a single sustaining period corresponding to a brightness level of an image signal;
- and
- addressing each of the discharging cells on the row line once per image frame by applying an erasing pulse to each of the discharging cells on the row line, wherein each of the erasing pulses controls a corresponding single sustaining period in accordance with the brightness level of the image data so that the radio frequency discharge in each of the discharging cells is erased after the sustaining period corresponding to the brightness level of the image data.
A method for driving a plasma display panel using a radio frequency discharge, comprising:
- addressing each of the discharging cells on a row line on the plasma display panel once per image frame by applying a triggering pulse to the address electrode of each of the discharging cells on the row line, wherein a RF signal is applied to RF electrode lines of each of the discharge cells, wherein the triggering pulse triggers a radio frequency discharge in each of the discharging cells on the row line, and wherein a timing of each triggering pulse defines a sustaining period corresponding to a brightness level of an image data;
- and
- sustaining the radio frequency discharge triggered in each of the discharging cells on the row line.
An apparatus for driving a plasma display panel using a radio frequency discharge, comprising:
- converting means for converting an input video signal into a video data;
- storage means for storing temporally the video data for a row line;
- control means for rearranging the video data for a row line stored in the storage means in order of brightness level and for generating driving signals having a time lag according to the brightness level;
- and
- data driving means for applying data triggering signals corresponding to the driving signals to data electrodes on the plasma display panel.
A method for driving a plasma display panel, including a plurality of cells, each cell including a scanning electrode, a data electrode intersecting with the scanning electrode and a sustaining electrode in parallel with the scanning electrode, comprising:
- causing simultaneously a preliminary discharge in entire cells;
- allowing the entire cells to start simultaneously on a sustaining discharge;
- and
- performing a single addressing for each cell per image frame, wherein the single addressing is performed by applying an erasing pulse, which erases the sustaining discharge started on the entire scanning lines, to the entire scanning lines with a time difference corresponding to a brightness of desired image data so that the sustaining discharge is erased simultaneously at the scanning lines having a same brightness level.
A method for driving a plasma display panel including a plurality of cells, each cell including a scanning electrode, a data electrode intersecting with the scanning electrode and a sustaining electrode in parallel with the scanning electrode, comprising:
- causing simultaneously a preliminary discharge in entire scanning lines;
- allowing the entire cells to start simultaneously on a sustaining discharge;
- and
- performing a single addressing for each cell per one frame interval, wherein the single addressing is performed by applying a writing pulse, which allows a sustaining discharge to be started, to the entire scanning lines with a time difference corresponding to a brightness of data so that the sustaining discharge is started simultaneously at the scanning lines having a same brightness level.
A drive apparatus for a display, comprising:
- converting means for converting an analog video input signal to a digital video signal;
- control means coupled to receive the digital video signal and configured to control the storage and rearrangement of the digital video data;
- first multiplexing means coupled to receive the digital video data from the converting means, a first control signal from the control means, and pixel location information from a location counting means, wherein the first multiplexing means is configured to sort the digital video data by gray scale, and wherein a vertical synchronous signal, horizontal synchronous signal and a data clock signal are inputs to the location counting means;
- storage means coupled to receive a second control signal from the control means and sorted digital video data from the first multiplexing means, wherein the storage means is configured in first through two-hundred-fifty-sixth memory locations to store sorted digital video data;
- column and row rearranging means, each coupled to receive sorted digital video data from the storage means and a second and third control signal, respectively, from the controller means, wherein the column and row rearranging means are configured to rearrange data for a column and a row of a display, respectively;
- second and third multiplexing means, each coupled to receive data from the column and row rearranging means, respectively, wherein the second and third multiplexing means are configured to output data to column and row driver means, respectively;
- and
- display means, coupled to receive data from the column and row driver means, and configured to display digital video data, wherein the control means controls the column and row rearranging means and the storage means so that the data to the column and row driver means include driving signals that address each cell on a scanning line of the display once during a horizontal synchronous period to generate a single sustaining discharge interval corresponding to one of a plurality of gradiation levels forming the gray scale.
A method for driving a plasma display panel, comprising steps of:
- causing a preliminary discharge in entire picture element cells;
- and
- writing selectively lag the picture element cells on any one of row lines in a time according to a gray scale to start a sustaining discharge, wherein the sustaining discharge is generated without using subfields of a frame.
Dependencies are inferred from the claim text.