KR20010029074A - Apparatus for capturing Image data in Plasma Display Panel - Google Patents

Abstract

PURPOSE: An image information capturing apparatus is provided to provide a user with more convenient and useful function by capturing and storing image information and converting the captured image into a picture file so as to be displayed. CONSTITUTION: A frame memory(120) temporarily stored image data, and a capture memory(140) stores image data output from the frame memory according to a frame. The first switch part(150) is installed on a current path between the frame memory and the capture memory and transfers the image data from the frame memory to the capture memory in response to a control signal. A demultiplexing part(130) outputs the image data from the frame memory through one of plural output terminals. The second switch part(155) transfers the image data from the frame memory or the capture memory to the demultiplexing part. A capture controller(160) controls such that the image data is stored in the capture memory through the first switch part according to an externally applied capture operation command. The capture controller(160) controls such that the image data stored in the capture memory is transferred to the demultiplexing part through the second switch part.

Description

Apparatus for capturing Image data in Plasma Display Panel

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display driving circuit which is one of flat panel displays. In particular, the present invention relates to capturing information displayed on a screen of a plasma display panel, converting the information into a picture file, and displaying the information on a screen. The present invention relates to an apparatus for capturing image information of a plasma display panel.

For example, a variety of methods are known for the construction of a plasma display panel (hereinafter, abbreviated as 'PDP'). However, in order to achieve a thin shape, a discharge glass is formed by enclosing the surrounding glass of the opposing front and rear glass substrates with a seal glass. It is generally employed to construct an airtight container to accommodate, and the front and rear glass substrates are usually made of low-cost soda-lime glass.

In a color PDP having a small number of display cells, a spacer is used to prevent error discharge or color penetration between adjacent cells, or to withstand pressure differences between panels and to define a distance between electrodes for discharge. A partition wall is formed between the front and rear glass substrates, and the display cell is formed in a space surrounded by the partition wall and the front and rear glass substrates. Phosphor is coated on the inner surface of the display cell, and the phosphor generates visible light of each color by ultraviolet rays generated by the discharge.

In a color PDP having a plurality of fine display cells capable of displaying an image, a rectangular cell array in which cells and electrodes are easily formed is usually employed.

Discharge electrodes are arranged in a row and a column of the panel, and a cell is formed in a space where each row electrode and the column electrode intersect.

In the PDP, the cell is discharged by adjusting a voltage applied between the row electrode and the column electrode of the cell constituting the pixel, and the amount of light (brightness) is adjusted by changing the number of discharges of the cell, and the column electrode, By generating an address pulse according to the image data input to the X-side address electrode and controlling the on / off of each cell, cell scanning for image display is performed.

FIG. 1 is a diagram illustrating a data control block of a PDP controller according to the prior art, and includes a data processor 10, a multiplexer 20 (MUX), a frame memory 30, a demultiplexer 40 (DEMUX), and a memory controller 50. Equipped.

Reference numeral 10 denotes a data processor for converting an input image analog signal into time sequence data and then digitally converting the code. 20 denotes a serial data output from the data processor 10 according to a predetermined selection control signal. The multiplexer 20 sequentially outputs the data, and a reference numeral 30 denotes a frame memory such as a DRAM that stores image data output from the multiplexer 20 for each frame, and a reference numeral 40 denotes an external selection of the image data output from the frame memory 30. A demultiplexer for selecting and outputting one line among a plurality of output terminals according to a control signal (select), and a reference numeral 50 denotes the multiplexer according to a horizontal (Hsync), vertical (Vsync) synchronization signal and a clock (CLK) signal input from an external source. 20 and the frame memory 30 and the demultiplexer 40 to control the operation of the image data to the X-side address electrode of the PDP panel (not shown). A memory controller for controlling such force.

The data control block configured as described above outputs a selection control signal (select) in accordance with the synchronization signals (Hsync, Vsync) and the clock signal (CLK) input to the memory controller 50, and multiplexes the digitally converted image data. ) Alternately stores the frames in the first bank 31 and the second bank 35 of the frame memory 30 by frame, and the image data stored in the frame memory 30 according to a control signal of the memory controller 50 is stored. The demultiplexer 40 outputs image data for each line to the X-side address electrode of the panel (not shown) to display an image.

The PDP configured as described above continuously displays the image on the panel according to the RGB image data, captures and stores the image displayed on the screen, and displays the captured image on the screen when the user desires. It was not added.

As described above, since the conventional PDP does not have a capture function, even when the viewer keeps watching the broadcast and the image is easily displayed, the PDP cannot store the image and thus cannot satisfy the various needs of the user.

However, although the technology to implement the capture function has already been announced and applied to a personal computer (hereinafter, referred to as a 'PC'), a board having a capture function is installed on the PC and various videos and images such as TV broadcasts or DVDs can be displayed on the PC. While capturing the desired part of the storage while watching, there has been a problem of preparing a capture program in advance or providing an additional circuit board such as a TV reception card.

Therefore, the present invention captures and temporarily stores the image information displayed on the PDP screen, and converts the captured image into a picture file according to the user's command to display on the screen, presenting a more convenient and useful function to the user The purpose is to do that.

In addition, another object of the present invention is to temporarily store a desired screen by a simple operation of a user in a moving image capturing method, and to display the stored captured image arbitrarily as well as to implement a capture function at a lower cost. It is to provide an image information capture device of a plasma display panel that can increase the market competitiveness due to differentiation.

1 is a view showing a data control block of a PDP controller according to the prior art,

2 is a diagram illustrating a data control block of a PDP controller according to an embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

110: data processor 115: multiplexer

120: frame memory 125: demultiplexer

130: memory controller 140: capture memory

150: first switch means 155: second switch means

160: capture controller 180: interface (Interface)

In the image information capturing apparatus of the present invention for achieving the above object, in the data control apparatus of the plasma display panel for generating a data pulse in accordance with the input image data to apply to the address electrode and to display the image:

A frame memory for temporarily storing image data;

A capture memory for storing image data output from the frame memory for each frame;

First switch means installed in a current path between the frame memory and the capture memory and transferring image data output from the frame memory to the capture memory according to a control signal;

Demultiplexing means for outputting image data output from the frame memory through a selected line among a plurality of output terminals;

Second switch means for selectively transferring image data output from the frame memory or the capture memory to the demultiplexing means; And

Switch control so that the image data is stored in the capture memory through the first switch means according to a capture operation command input from the outside, and the image data stored in the capture memory is output to the demultiplexing means through the second switch means. And a capture controller for controlling and displaying a captured image on the screen.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

2 is a diagram illustrating a data control block of a PDP controller according to an embodiment of the present invention, wherein the data processor 110, the multiplexing unit 115, the frame memory 120, the demultiplexing unit 130, and the memory controller ( 135, a capture memory 140, a first switch means 150, a second switch means 155, a capture controller 160, a remote controller 190, and the like.

Reference numeral 110 denotes a data processor for converting an input analog broadcast video signal into time sequence data and then digitally converting the code. 115 denotes a plurality of input signals output from the data processor 110 according to a predetermined selection control signal (select). Is a multiplexing means such as a multiplexer that sequentially selects and outputs serial data, and reference numeral 120 denotes alternately storing image data output from the multiplexing means 115 in the first bank 121 and the second bank 125 for each frame. A frame memory such as a DRAM, a reference numeral 130 denotes demultiplexing means such as a demultiplexer for selecting and outputting one line of a plurality of output terminals according to an external selection control signal (select) for outputting image data output from the frame memory 120, Reference numeral 135 denotes the multiplexing means 115 and the frame according to the horizontal and vertical synchronization signals Hsync and Vsync and the clock signal CLK. Memory is a memory controller for the video data is controlled so as to be output to the X-side address electrodes of the PDP panel, not shown, to control the operation of the unit 120 and the demultiplexing means 130.

Reference numeral 140 denotes a capture memory for storing image data output from the frame memory 120 for each frame according to a predetermined switching control signal, and reference numeral 150 denotes a current between the frame memory 120 and the capture memory 140. It is installed in the passage is operated according to a predetermined switching control signal is a first switch means for transferring the image data output from the frame memory 120 to the capture memory 140, the reference numeral 155 is for the frame memory 120 and capture It is installed in the current path between the memory 140 and the demultiplexing means 130 and operated according to a predetermined switching control signal to selectively demultiplex the image data output from the frame memory 120 or the capture memory 140. The second switch means for transmitting to the 130, symbol 160 is the number of first and second switches in accordance with the input command after determining the capture operation command input from the outside Control the 150 and 155 to store the image data in the capture memory 140 or output the image data stored in the capture memory 140 to the X-side address electrode so that the captured image is displayed on the screen. The capture controller to control.

On the other hand, the capture-related operation command input to the capture controller 160 can be operated using an external data input means or a remote controller 190, the remote controller 190 to store the image data currently displayed on the PDP screen Outputs the capture display key 193 for displaying the capture key 191 and the image data stored in the capture memory 140 on the screen and the image data stored in the capture memory 195 to an external device such as a PC or a printer. Key switches such as a capture output key 195 to be provided in a matrix form.

Of course, the capture block 140 to 160 receives the infrared signal according to the capture command data transmitted from the remote controller 190, converts it into an electrical signal corresponding thereto, and outputs it to the capture controller 160. ) And an interface circuit 180 for connecting to an external device such as a PC or a printer is provided to operate according to the control signal of the capture controller 160.

The data and capture control block configured as described above multiplexes the digitally converted image data by outputting a selection control signal (select) according to the synchronization signals (Hsync, Vsync) and the clock signal (CLK) input to the memory controller 135. By means 115, the first bank 121 and the second bank 125 of the frame memory 120 are alternately stored for each frame, and according to the selection control signal (select) of the memory controller 135, the frame memory ( The image data stored in 120 is output, and the image data is displayed by outputting line-by-line image data to the X-side address electrode of the panel through the demultiplexing means 130.

When the viewer is watching a broadcast and an image is to be stored, the capture key 191 of the input unit 190 such as a remote controller is selected to generate an infrared signal corresponding thereto, and the light receiver 170 transmits the infrared signal. Generates an electrical signal corresponding to the output to the capture controller 160, the capture controller 160 outputs a control signal corresponding to the image data output from the frame memory 120 through the first switch means 150 Is stored in the capture memory 140 for a set time.

Subsequently, to display the image data stored in the capture memory 140, the capture display key 193 of the input unit 190 is selected to generate an infrared signal, and the light receiving unit 170 generates electricity corresponding to the transmitted infrared signal. A signal is generated and output to the capture controller 160, and the capture controller 160 controls the second switch means 155 from the A terminal to the B terminal so that the image data stored in the capture memory 140 is the second switch means. The control unit 155 and the demultiplexing unit 130 control the display to be continuously displayed on the screen for a set time.

In order to output the image data stored in the capture memory 140 to an external device, the capture output key 195 of the input unit 190 is selected to generate an infrared signal, and the light receiving unit 170 is applied to the transmitted infrared signal. Generates a corresponding electric signal and outputs it to the capture controller 160, and the capture controller 160 controls the interface 180 to output image data to a PC or printer, which is an external device, to manage and store the capture data on the PC, or The printer can output still images frame by frame.

The operation state of the capture control block as described above is as follows.

Capture command When saving capture When displaying capture At capture output First switch means ON OFF OFF Second switch means A terminal B terminal A terminal interface OFF OFF ON

According to various capture operation commands through the input means 190 such as a remote controller, the capture controller 160 operates the first and second switch means 150 and 155 and the interface circuit 180 as shown in Table 1 to capture various capture operations. Will be performed.

The capture memory 140 may use a DRAM such as the frame memory 120, but more preferably, a memory such as a window RAM is used to store a plurality of frame images.

Therefore, in the present invention, by capturing and temporarily storing the image information displayed on the PDP screen, and converting the captured image into a picture file according to the user's command to display on the screen, more convenient and useful to the user In addition to presenting the function, the capture function can be performed at a lower cost and simpler operation to satisfy various needs of producers and consumers, as well as to increase market competitiveness due to differentiation of PDP products.

Claims (3)

A data control apparatus of a plasma display panel for generating a data pulse according to input image data and applying the same to an address electrode and displaying an image: A frame memory for temporarily storing image data; A capture memory for storing image data output from the frame memory for each frame; First switch means installed in a current path between the frame memory and the capture memory and transferring image data output from the frame memory to the capture memory according to a control signal; Demultiplexing means for outputting image data output from the frame memory through a selected line among a plurality of output terminals; Second switch means for selectively transferring image data output from the frame memory or the capture memory to the demultiplexing means; And Switch control so that the image data is stored in the capture memory through the first switch means according to a capture operation command input from the outside, and the image data stored in the capture memory is output to the demultiplexing means through the second switch means. And a capture controller configured to control and display the captured image on the screen. The method of claim 1, And an interface circuit for outputting image data stored in the capture memory to an external device. The method of claim 1, The capture memory, Image information capture device of the plasma display panel, characterized in that the window RAM.