JP2002156940A - Device and method for driving plasma display panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a driving device and a driving method for a PDP which can make a display of apparently higher definition even when the same PDP is used. SOLUTION: This is a display panel driving device which displays source image data having scanning lines almost twice as many as scanning lines of a delta array PDP by decreasing the number of the scanning lines almost to a half by a scanning line converting means 9; when pixel data of respective color pixels on scanning lines composed of cells in (h)th and (h+1)th rows of the PDP are computed, pixel data of the cells in the (h)th row are generated from pixel data of pixels of an (n)th scanning line and pixel data of pixels of an (n+1)th scanning line and pixel data of cells of the (h+1)th row are generated from pixel data of pixels of the (n+1)th and (n+2)th scanning lines of the source image data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving apparatus and a driving method for a plasma display panel (hereinafter, also simply referred to as a PDP), and more particularly to a driving apparatus and a driving method for improving an apparent display resolution in a PDP. It is.

[0002]

2. Description of the Related Art FIG. 6 shows a general PD having a delta arrangement.
FIG. 3 is a diagram showing a structure of P. As shown in FIG. 6, three types of electrodes are wired on a panel 400 of a PDP, and an X electrode (also referred to as a sustain electrode, which is a sustain pulse application electrode for light emission display) 401 and a Y electrode (scanning) in the horizontal direction. Also called an electrode,
A scanning electrode 402 (which is an electrode for applying a scanning pulse) is wired in parallel, and an A electrode (also referred to as an electrode for applying an address pulse) 403 is wired in the vertical direction. Then, a discharge cell 404 is formed of cells through which the three electrodes pass. A plurality of X electrodes (X1, X2, X3, X
4,..., Xn) are all connected in common. During the address period in each subfield period, an address pulse corresponding to the image signal is applied to the A electrode and a predetermined scanning pulse is applied to the Y electrode at Y1, Y2. , Y3, Y4, ---, Y
n and the X electrode 401 and the Y electrode 4 during the display period.
02, a sustain pulse for light emission display is applied.

The display resolution of a color PDP is, for example, 1024 color pixels in the horizontal direction and 76 scanning lines in the vertical direction due to various manufacturing problems and driving device problems.
Limited to eight. A related issue is PD
P has problems such as a decrease in luminance due to miniaturization of red (R), green (G), and blue (B) cells, development of a miniaturization process, and yield problems. In a PDP, to increase the display luminance, it is necessary to increase the area of each of the R, G, and B cells that constitute one color pixel, which limits the number of color pixels formed in one PDP. Receive. Several techniques have been proposed so far to increase the luminous efficiency by enlarging the area of the display area of the PDP, but a so-called delta in which R, G, and B cells are arranged in a triangular shape as shown in FIG. The array PDP is one of them.

FIG. 6 is a view showing the arrangement of scan electrodes Y and sustain electrodes X in a delta array PDP, but guard bands for separating cells are not shown. As shown in FIG. 6, in the delta array PDP, R, G, and B cells constituting one color pixel are arranged at vertices of a triangle.
For example, one color pixel P in cells R1, B1, and G1
1 is formed, one color pixel P2 is formed by the cells of R2, B2, and G2, and one color pixel P3 is formed by the cells of R3, B3, and G3. R1, B2, G2, R3
Are in the same row, and cells B1, G1, R2, B3, and G3 are in the same row, and each color pixel (P1, P2, P3
, Etc.) are arranged in a delta shape over two rows. On each cell, the scanning electrode Y and the address electrode A cross, and the sustain electrode X and the address electrode A cross. For example, on the cell B1, the scanning electrode Yk intersects with the address electrode a1, and the sustain electrode Xk intersects with the address electrode a1.

The above P1, P2, P3, --- are on one horizontal scanning line (hereinafter, also simply referred to as a scanning line), and when a color pixel on this horizontal scanning line emits light, the k-th pixel from the top. Scan electrodes Yk and a1, a2, a3, a4, a
A cell to emit light is determined by an address electrode A composed of 5, a6, and the like. For example, when a color pixel on a scanning line related to the scanning electrode Yk is caused to emit light, a sustain pulse is simultaneously applied to the adjacent upper and lower sustain electrodes Xk-1 and Xk. By doing so, light can be emitted. During the display period in each subfield period, the sustain electrode and the scan electrode
The sustain pulse is applied alternately with the opposite polarity.

FIG. 7 is a diagram showing a conventional driving method for displaying a gradation in a delta array PDP. Here, all the X electrodes shown in FIG. 6 are connected in common and driven. FIG.
As shown in (a), for example, when the number of gradations is 2 to the fifth power, that is, when halftones are displayed with 32 gradations, one field display period for each color pixel (hereinafter also simply referred to as a field period). 1F (for example, (1/60) second (= approximately 16.
7 msec)) for five sub-field periods SF1,.
.., Divided into SF5, and each subfield period SF
1,..., SF5 has at least an address period AP and a display period SP, and the display period SP includes 1: 2: 4:
An 8:16 ratio is weighted. This is performed by applying a weighted number of sustain pulses to the X electrode and the Y electrode of the PDP during the display period of each subfield period, for example, by applying a number of the ratio of the binary code. During the address period in each subfield period, a predetermined address pulse is applied to the A electrode shown in FIG.
That is, a scanning pulse is sequentially applied to the Y electrodes Y1, Y2, Y3,..., Yn, and during the display period in each subfield period, a sustain pulse is applied to the X electrode and the Y electrode to emit light. The pixels emit light simultaneously on the entire screen.

[0007] SF1 having the shortest light emission time corresponds to L of the image signal.
SF5 corresponding to SB and having the longest emission time corresponds to the MSB of the image signal, and other subfield periods also correspond to each bit of the image signal. The address period AP is the same in every subfield period. The display order of the subfield period corresponding to each bit is, for example, SF1, SF2, SF3, SF4, SF within the unit display period.
The order is fixed at 5. FIG. 7B shows a state of a scan pulse 500 applied to the scan electrodes (Y electrodes) of the PDP in each address period, and sequentially scans from the electrode Y1 of the first scan line to the electrode Yn of the nth scan line. One address period is completed by applying the pulse 500. Ap indicates an address pulse 501 applied to the address electrode of the PDP, and the presence or absence of the address pulse is determined according to the gradation and color tone of the image signal.

As described above, in the address period, a predetermined scanning pulse 500 is applied in chronological order from the top of the Y electrode, and the Y electrode is scanned once from the top to the bottom. The address period ends. In synchronization with the scanning pulse 500, an address pulse 501 of color pixel information is applied to the A electrode for each color. When the scan pulse and the address pulse overlap with each other in time, a discharge is generated, writing is performed by forming wall charges, and light is emitted by applying a sustain pulse during a display period.

In the conventional example shown in FIG. 7, when one field display period is a field period of an interlaced television signal, a change in an image signal occurs between the field display period and a subsequent field display period. Thus, the address pulse Ap applied to the A electrode changes, but the scanning electrode applied to the scan electrode and the sustain electrode applied to the scan electrode and the sustain pulse applied to the scan electrode do not change the applied electrode or the timing. One field display period may be one frame period of a non-interlace television signal, ie, a progressive television signal. In the following description, one field display period is one frame period of a non-interlace television signal, ie, a progressive television signal. It will be described as if.

[0010]

In recent years, with the progress of high-density recording technology, the cost reduction of large-capacity recording media, and the progress of digitization, image data for high definition has been easily obtained. . However, as described above, since the number of color pixels that can be formed on one PDP is limited in the PDP, it is impossible to perform a display with higher resolution than the resolution according to the number of color pixels on the PDP. .

For example, when there is original image data having twice the scanning lines of the PDP which is a display panel,
By performing scanning line conversion to reduce the number of scanning lines by half,
Drive with the converted image data. FIG. 3 shows a delta array PD
FIG. 7 is a diagram showing original image data having scanning lines twice as large as P, and also showing cells of a virtual PDP displaying the same at the same time. Each hexagon in FIG. 3 indicates one cell and the corresponding pixel data, and the symbols in the hexagon indicate the cell number and the value of the pixel data of the corresponding cell. In the figure, R indicates red, G indicates green, and B indicates blue.
Indicates a red cell and pixel data of the fourth color pixel from the left of the second scanning line. And R24, G24, B24
Constitute the fourth color pixel from the left of the second scanning line.

In FIG. 3, the first scanning line is constituted by cells in the first and second rows. That is, the first scanning line is composed of color pixels composed of G11, R11, and B11 and color pixels composed of G12, R12, and B12, and similarly, the second scanning line is composed of three rows. G21, R21, B21
, Or a color pixel composed of G22, R22, and B22. FIG. 3 shows pixels corresponding to six scanning lines, and these original image data are converted into image data having half the number of scanning lines shown in FIG. 4 by scanning line conversion means. FIG. 4 is a diagram showing each cell in a general delta array PDP, and has half the number of scanning lines of the PDP and the original image data shown in FIG. 4 indicate the number of each cell of the PDP and the value of pixel data corresponding to the cell.

In FIG. 4, the first scanning line is constituted by cells in the first and second rows, and g11, r11, b11
And the second scanning line is similarly configured by cells in the third and fourth rows, and a color pixel configured by r12, g12, and b13.
a color pixel composed of g21, r21, b21, and r
22, g22 and b22. FIG. 5 is a diagram showing a method of calculating pixel data of each cell in the conventional device, and shows a calculation method when pixel data of each cell shown in FIG. 4 is calculated from original pixel data shown in FIG. That is, in FIG. 5, the pixel data of the cell of each scanning line is calculated by adding the image data of two adjacent scanning lines of the original image data. For example, the pixel data of the first scanning line is the same as the first scanning line and the second scanning line in the original image data.
The image data of the scanning line is added, and the pixel data of the second scanning line is generated by adding the image data of the third and fourth scanning lines in the original image data.

Accordingly, g11 of the first scanning line shown in FIG. 4 is G11 + G21, r11 is R11 + R21, and b11 is B11 + B21. Similarly, FIG.
G25 of the second scanning line shown in FIG.
25 is R35 + R45, b25 is B35 + B45
It is. As described above, in the conventional PDP driving device,
When driving a PDP using image data having twice the number of scanning lines (s) of the PDP, first, the number of scanning lines is reduced to half, and the converted image data is converted into image data. Then, an address pulse to be applied to the address electrode is generated based on the PDP to drive the PDP. As a result, the resolution in the vertical direction is limited by the number S of scanning lines of the PDP.

The present invention has been made in view of the above-mentioned problems, and even if the same PDP is driven, it appears that
It is an object of the present invention to provide a driving device and a driving method of a PDP capable of displaying with higher definition.

[0016]

SUMMARY OF THE INVENTION A plasma display panel driving apparatus and a driving method according to the present invention have been made to solve the above-mentioned problems, and a first invention is directed to a plurality of scanning electrodes and a plurality of sustaining electrodes. And a plurality of address electrodes intersecting the scan electrode and the sustain electrode, and cells of three primary colors constituting each color pixel are arranged in a delta shape over two rows, and the scan electrode is provided on each of the cells. And the address electrode intersects and the sustain electrode and the address electrode intersect the plasma display panel,
A display panel driving apparatus for displaying converted image data obtained by converting the number of scanning lines of the original image data having approximately twice the number of scanning lines of the display panel into approximately half by scanning line conversion means. When calculating the pixel data of each color pixel on the scanning line composed of the cell of the h-th row and the cell of the (h + 1) -th row in the display panel, The pixel data is generated from the pixel data of the pixel of the n-th scanning line and the pixel data of the pixel of the (n + 1) -th scanning line in the original image data, and the pixel data of the cell in the (h + 1) -th row is the pixel of the (n + 1) -th scanning line in the original image data. And a pixel data of a pixel on the (n + 2) th scanning line.

The plasma display panel of the present invention (P
According to the driving device of DP), when driving the PDP having the color pixels in the delta arrangement, the pixel data of the cells in the h-th row and the (h + 1) -th row constituting one scanning line are separated into separate scanning lines in the original image data. And the h-th row and the h-th row based on the generated image data.
Since the cells in the +1 row are driven, one scanning line is driven as if it were two scanning lines, and the vertical resolution is apparently improved as compared with the conventional driving device.

According to a second aspect of the present invention, in the plasma display panel driving device according to the first aspect, the scanning line conversion means includes: a pixel data of a pixel on an nth scanning line in original image data; The data is generated by adding the data and the pixel data of the pixel of the (n + 1) th scanning line. The pixel data of the cell of the (h + 1) th row is the pixel data of the pixel of the (n + 1) th scanning line and the pixel of the (n + 2) th scanning line in the original image data. This is a plasma display panel driving device that generates by adding pixel data.

According to the present invention, when calculating the pixel data of each color pixel on the scanning line composed of the cell of the h-th row and the cell of the (h + 1) -th row in the display panel, the adjacent pixel in the original image data is calculated. Since the calculation can be easily performed by simply adding the two pixel data located on the two scanning lines, the load on the hardware for calculating the pixel data can be reduced.

According to a third aspect, in the plasma display panel driving apparatus according to the first or second aspect, when the number of scanning lines of the input image data is larger than the number of scanning lines of the plasma display panel, The input image data is calculated by dividing the number of scanning lines of the plasma display panel by 2
A plasma display panel driving device is configured to obtain the original image data by converting the image data into image data having double scanning lines.

According to the present invention, even when the number of scanning lines of the input image data is not twice or almost twice the number of scanning lines of the plasma display panel, the vertical resolution can be improved as compared with the conventional driving device. It can be improved in appearance.

According to a fourth aspect of the present invention, there are provided a plurality of scan electrodes, a plurality of sustain electrodes, a plurality of address electrodes intersecting the scan electrodes and the sustain electrodes, and a cell of three primary colors constituting each color pixel. Arranged in a delta shape over two rows,
On each of the cells, the number of scanning lines of the original image data is converted to about 1/2 by a plasma display panel in which the scanning electrodes and the address electrodes intersect and the sustaining electrodes and the address electrodes intersect. A display panel driving method for displaying the converted image data obtained by the above-described method, wherein the scanning line conversion includes the h-th display in the display panel.
When calculating the pixel data of each color pixel on the scanning line composed of the cell of the row and the cell of the (h + 1) th row, the pixel data of the cell of the hth row is the pixel of the pixel of the nth scanning line in the original image data. The pixel data of the cell on the (h + 1) th row is generated from the data and the pixel data of the pixel on the (n + 1) th scanning line.
This is a plasma display panel driving method that is generated from pixel data of pixels of +2 scanning lines.

According to a fifth aspect, in the driving method of the plasma display panel according to the fourth aspect, in the scan line conversion, the pixel data of the cell in the h-th row is the pixel of the pixel in the n-th scan line in the original image data. The data is generated by adding the data and the pixel data of the pixel of the (n + 1) th scanning line. The pixel data of the cell of the (h + 1) th row is the pixel data of the pixel of the (n + 1) th scanning line and the pixel of the (n + 2) th scanning line in the original image data. This is a method of driving a plasma display panel in which pixel data is added and generated.

According to a sixth aspect, in the plasma display panel driving method according to the fourth or fifth aspect, when the number of scanning lines of the input image data is larger than the number of scanning lines of the plasma display panel, A plasma display panel driving method in which the input image data is converted into image data having twice the number of scanning lines of the plasma display panel to obtain the original image data.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention has been made in view of the above-mentioned problems, and has a delta array PD in which cells of three primary colors constituting each color pixel are arranged in a delta shape over two rows.
In P, the original image data having the number of scanning lines approximately twice as large as the number of scanning lines (S) of the PDP is converted into image data having approximately 1/2 the number of scanning lines by the scanning line conversion means. What is claimed is: 1. A display panel driving device for driving a PDP by image data, wherein said scanning line conversion means comprises: a pixel of each color pixel on a scanning line composed of a cell on an h-th row and a cell on an h + 1-th row in said display panel. In calculating the data, the pixel data of the cell in the h-th row is generated from the pixel data of the pixel in the n-th scanning line and the pixel data of the pixel in the (n + 1) -th scanning line in the original image data. The pixel data is generated from the pixel data of the pixel on the (n + 1) th scanning line and the pixel data of the pixel on the (n + 2) th scanning line in the original image data. In this driving method, two scan lines constituting one scan line are used.
Since the cells in one row are driven by separate image data, the vertical resolution limited by the number of scanning lines of the PDP can be apparently increased.

An embodiment of a plasma display panel driving device according to the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram showing an example of a PDP driving device according to the present invention. The plasma display panel itself used in the present invention is the same as that shown in FIG. 6, and a guard band for separating each cell is not shown. Further, the driving method of the scanning electrodes and the sustain electrodes for performing the gray scale display is almost the same as that described with reference to FIG. However, in the following description, one field display period in the present invention is described as one frame period of a non-interlaced television signal, that is, a progressive television signal.

In practicing the present invention, one more subfield is set in the method of driving the scan electrodes and sustain electrodes for gradation display as compared with the conventional device. For example, when displaying image data having a 5-bit gradation shown in FIG. 5, it is better to provide six subfields rather than five subfields. This is because, as described later, a carry occurs because the sum of the values (pixel data) of the two cells is used when calculating the value (pixel data) of the cell forming the color pixel.

In FIG. 1, in a PDP 21 formed by arranging display cells in a matrix, R, G, and B cells constituting each color pixel are arranged in a delta.
The PDP driving device 10 provides a scanning line conversion unit 9 for converting the number of scanning lines of input image data, a control unit 11 for controlling display of the PDP 21, and a scan pulse or a sustain pulse to the scan electrodes Y1 to Yn. A scan electrode driver 13 for driving; a sustain electrode driver 15 for applying sustain pulses to the sustain electrodes X1 to Xn to drive them;
a) an address electrode driver 17 for driving by applying an address pulse corresponding to image data to the PDP driving device 1
And a microprocessor (hereinafter, also referred to as an MPU) 19 for controlling the entirety.

The input image data and synchronous data input to the PDP driving device 10 are given to the scanning line conversion means 9.
The scanning line conversion means 9 converts the number of scanning lines of the input image data into half, and supplies the obtained converted image data and synchronization data to the frame memory 31. The synchronization data of the input image data is supplied to the scanning line conversion means 9 and the frame memory 31. When the input image data is an interlaced signal, an I / P converter is provided before the scanning line converter 9 to convert the interlaced signal into a progressive signal to obtain original image data. give.

The address pulse applied to the address electrode is
It is generated by the signal processing circuit 32 based on the converted image data output from the scanning line conversion means 9, temporarily stored in the frame memory 31, read out at a predetermined timing, and supplied to the address electrode driver 17. Control means 11
A scanning line number detecting means 23 for detecting the number of scanning lines of the input image data; a signal processing circuit 32 for performing signal processing on the image data given from the scanning line converting means 9; And a frame memory 31 for storing data to be provided to the address electrode driver 17, and a driver control circuit 33 for generating scan pulses and sustain pulses.

The number-of-scanning-lines detecting means 23 detects the number of scanning lines sn of the input image data, gives the result to the scanning-line converting means 9, and controls the controlling means 1 via the MPU 19.
Give to 1. The scanning line conversion means 9 determines the number of scanning lines sn of the input image data and the plasma display panel (PDP) 21.
The image data having the number of scanning lines S is output to the frame memory 31 based on the number of scanning lines S. In the following description, the image data having the number of scanning lines approximately twice as large as the number of scanning lines of the PDP 21 will be referred to as original image data for ease of explanation. Here, it is assumed that the input image data is image data having approximately twice the number of scanning lines of the PDP 21. Therefore, here, the input image data and the original image data will be described as being the same.

The signal processing circuit 32 performs signal processing according to the number S of scanning lines of the PDP and the number of display color pixels of the PDP 21. The driver control circuit 33 generates a scan pulse and a sustain pulse in a mode corresponding to the number S of scan lines. In driving the PDP 21, during the address period of each subfield in one frame display period, the scan electrode driver
A scan pulse is applied to the Y electrode of DP 21, and during the light emission period, a sustain pulse is applied from the sustain electrode driver 15 to the X electrode, and a sustain pulse is also applied from the scan electrode driver 13 to the Y electrode.

A control signal is supplied from the driver control circuit 33 to the scan electrode driver 13 and the sustain electrode driver 15. This control signal is based on the input synchronization data (vertical synchronization signal, horizontal synchronization signal, clock signal, data synchronization signal, etc.).
2 and is supplied to each driver via a driver control circuit 33. The data displayed in each display cell is taken out of the frame memory 31 by the signal processing circuit 32 in synchronization with the clock signal and the data synchronization signal, and sent to the address electrode driver 17 to be displayed on the display cell.

FIG. 2 is a diagram showing a method of calculating pixel data of each cell according to the present invention, and illustrates the same cell as the conventional cell shown in FIG. In FIG. 2, pixel data of a cell of each scanning line is, in principle, two adjacent pixels of the original image data.
It is calculated by adding the image data of two scanning lines. That is, of the cells in the first and second rows that constitute the first scanning line,
The pixel data of the first scan line of the original image data is doubled and used as the pixel data of the cell of the row, but the pixel data of the cell of the second row is the same as the pixel data of the first scan line of the original image data. A value obtained by adding the pixel data and the pixel data of the cell of the second scanning line is set. Further, among the cells of the third and fourth rows constituting the second scanning line, the pixel data of the cell of the third row is the pixel data of the cell of the second scanning line and the cell of the third scanning line in the original image data. And the pixel data of the cell in the fourth row is a value obtained by adding the pixel data of the cell of the third scanning line and the pixel data of the cell of the fourth scanning line in the original image data.

More specifically, the value of the cell g11 shown in FIG. 4 is G11 × 2, and the value of r11 is R11 + R
21, the value of g21 is G21 + G31, and r2
The value of 1 is R31 + R41. As described above, in the present invention, the cells of each color of R, G, and B constituting one color pixel are not generated based on the pixel data of the cells of the same scanning line in the original image data. That is, the pixel data of the pixel on the first row of the second scanning line is generated from the pixel data of the pixel on the second scanning line and the pixel data of the pixel on the third scanning line in the original image data, and The pixel data of the two rows of pixels is generated from the pixel data of the pixels of the third scanning line and the pixel data of the pixels of the fourth scanning line in the original image data. For example, the pixel data of g21 shown in FIG.
21 + G31, which is generated from the cell values of the second scanning line and the third scanning line in the original image data, and r21 shown in FIG.
Is R31 + R41, which is generated from the cell values of the third and fourth scanning lines in the original image data. The value of b21 shown in FIG. 4 is B31 + B41, and the third scanning line and the fourth It is generated from the values of the cells of the scan line.

As described above, the method of calculating pixel data of each cell in the present invention is generally expressed as follows. One scan line in the display panel 21 is defined by a cell in an h-th row of the display panel
The scanning line conversion means 9
Generates the value of the cell in the h-th row from the pixel data of the pixel on the n-th scanning line and the pixel data of the pixel on the n + 1-th scanning line in the original image data, and calculates the value of the cell in the h + 1-th row in the original image data. The pixel data of the pixel on the (n + 1) th scanning line and the (n +) th pixel
It is generated from pixel data of pixels of two scanning lines. In this case, of course, the h-th
One scanning line is formed by the cells in the row and the cells in the (h + 1) th row.

In the above description, the number sn of the scanning lines of the image data input to the scanning line converting means 9 is PDP2
It is assumed that the number of scanning lines s is approximately twice the number of scanning lines s of the PDP2.
As long as the number of scanning lines is larger than the number of scanning lines s, the present invention can be applied to input image data in which the number of scanning lines sn is other than twice the number of scanning lines s. In this case, the input image data is generated by known scanning line conversion means to generate image data whose number of scanning lines is twice s, and the image data whose number of scanning lines has been converted is compared with the original image data described above. Considering this, the present invention can be applied by calculating the value of each cell by the method described above. The number of scanning lines of the input image data may be made twice as large as the number of scanning lines s of the PDP by the scanning line conversion means 9.

As described in detail above, the PDP of the present invention
According to the driving device or the PDP driving method, when driving the PDP having the color pixels in the delta arrangement, the pixel data of the cells on the h-th row and the (h + 1) -th row constituting one scanning line is
The two scan lines of the original image data on which the pixel value of the h-th row is based and the two scan lines of the original image data on which the pixel value of the (h + 1) -th row are calculated are not exactly the same. . That is, the pixel data of the cells in the h-th row and the (h + 1) -th row that constitute one scanning line is generated by changing the combination of the scanning lines in the original image data on which the h-th row and the (h + 1) -th row are formed. , One scanning line is driven as if it were two scanning lines, and the vertical resolution is apparently improved as compared with the conventional driving method.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of a PDP driving device according to the present invention.

FIG. 2 is a diagram illustrating a method of calculating pixel data of each cell according to the present invention.

FIG. 3 is a diagram showing original image data having twice as many scanning lines as a delta array PDP.

FIG. 4 is a diagram showing each cell in a general delta array PDP.

FIG. 5 is a diagram showing a method of calculating pixel data of each cell in a conventional device.

FIG. 6 is a diagram illustrating a structure of a general PDP having a delta arrangement.

FIG. 7 is a diagram showing a conventional driving method for performing gradation display in a delta array PDP.

[Explanation of symbols]

 Reference Signs List 9 scanning line conversion means 11 control means 13 scanning electrode driver 15 sustain electrode driver 17 address electrode driver 19 microprocessor (MPU) 21 plasma display panel (PDP) 23 scanning line number detecting means 31 frame memory 32 signal processing circuit 33 driver control circuit

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5C058 AA11 AB02 BA07 BA25 BB01 BB17 BB19 5C080 AA05 BB05 CC03 DD07 HH04 JJ02 JJ04 JJ06

Claims (6)

[Claims] A plurality of scan electrodes; a plurality of sustain electrodes; and a plurality of address electrodes intersecting the scan electrodes and the sustain electrodes, and cells of three primary colors constituting each color pixel extend over two rows. The scan electrodes and the address electrodes intersect and the sustain electrodes and the address electrodes intersect each other on the cells, and the number of scan lines of the display panel is reduced. A display panel driving apparatus for displaying converted image data obtained by converting original image data having approximately twice the number of scanning lines into approximately 1/2 scanning lines by a scanning line conversion unit, wherein the scanning line conversion unit includes: When calculating the pixel data of each color pixel on the scanning line composed of the cell in the h-th row and the cell in the h + 1-th row in the display panel,
The pixel data of the cell in the row is generated from the pixel data of the pixel on the n-th scanning line and the pixel data of the pixel on the n + 1-th scanning line in the original image data, and the pixel data of the cell on the h + 1-th row is n + 1 in the original image data. A plasma display panel driving apparatus characterized by generating from pixel data of a pixel of a scanning line and pixel data of a pixel of an (n + 2) th scanning line. 2. The plasma display panel driving device according to claim 1, wherein said scanning line converting means includes said h-th line.
The pixel data of the cell in the row is generated by adding the pixel data of the pixel in the n-th scanning line and the pixel data of the pixel in the n + 1-th scanning line in the original image data. A plasma display panel driving apparatus characterized by generating pixel data of a pixel on an (n + 1) th scanning line and pixel data on a pixel on an (n + 2) th scanning line in data. 3. The plasma display panel driving device according to claim 1, wherein the number of scanning lines of the input image data is larger than the number of scanning lines of the plasma display panel. An apparatus for driving a plasma display panel, wherein the original image data is obtained by converting the image data into image data having twice the number of scanning lines of the plasma display panel. 4. A cell having a plurality of scan electrodes, a plurality of sustain electrodes, and a plurality of address electrodes intersecting the scan electrodes and the sustain electrodes, and cells of three primary colors constituting each color pixel span two rows. The scan lines of the original image data are arranged on the plasma display panel where the scan electrodes and the address electrodes intersect and the sustain electrodes and the address electrodes intersect on each cell. About 1 /
2. A display panel driving method for displaying converted image data obtained by conversion to 2 in the scan line conversion, wherein the scan line conversion is performed on a scan line formed of an h-th row cell and an (h + 1) -th row cell in the display panel. When calculating the pixel data of each color pixel of, the pixel data of the cell of the h-th row is generated from the pixel data of the pixel of the n-th scanning line and the pixel data of the pixel of the (n + 1) -th scanning line in the original image data, A method for driving a plasma display panel, characterized in that pixel data of a cell in the (h + 1) th row is generated from pixel data of a pixel in an (n + 1) th scanning line and pixel data of a pixel in an (n + 2) th scanning line in original image data. 5. The method of driving a plasma display panel according to claim 4, wherein, in said scanning line conversion, pixel data of a cell in said h-th row and pixel data of a pixel in an n-th scanning line in the original image data are compared with n + 1-th scanning. The pixel data of the cell in the (h + 1) -th row is added to the pixel data of the pixel in the (n + 1) th scanning line and the pixel data of the pixel in the (n + 2) th scanning line in the original image data. A plasma display panel driving method characterized in that the driving method is generated. 6. The plasma display panel driving method according to claim 4, wherein, when the number of scanning lines of the input image data is larger than the number of scanning lines of the plasma display panel, the input image data is converted to the input image data. A method for driving a plasma display panel, wherein the original image data is obtained by converting the image data into image data having twice the number of scanning lines of the plasma display panel.