WO2004077395A1 - Multi screen plasma display panel device - Google Patents

Multi screen plasma display panel device Download PDF

Info

Publication number
WO2004077395A1
WO2004077395A1 PCT/KR2004/000379 KR2004000379W WO2004077395A1 WO 2004077395 A1 WO2004077395 A1 WO 2004077395A1 KR 2004000379 W KR2004000379 W KR 2004000379W WO 2004077395 A1 WO2004077395 A1 WO 2004077395A1
Authority
WO
WIPO (PCT)
Prior art keywords
plasma display
display panel
screen
driving
compensating
Prior art date
Application number
PCT/KR2004/000379
Other languages
French (fr)
Inventor
Gwon Jin Moon
Original Assignee
Orion Electric Co. Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Orion Electric Co. Ltd. filed Critical Orion Electric Co. Ltd.
Publication of WO2004077395A1 publication Critical patent/WO2004077395A1/en

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G09G3/296—Driving circuits for producing the waveforms applied to the driving electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/02—Composition of display devices
    • G09G2300/026—Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters

Definitions

  • the present invention generally relates to a multi screen plasma display panel driving device, and more specifically, to a device for driving a multi screen plasma display panel with a simpler circuit by sharing circuits for driving a plurality of plasma display panels (hereinafter, referred to as "PDP").
  • PDP plasma display panel
  • a large screen video display device with a multi screen system is configured to connect a plurality of PDPs.
  • Each of the plurality of PDPs is driven by each driving circuit, and video signals are inputted in each driving circuit corresponding to each region, and represented in the PDP screen.
  • Each driving circuit includes a digital board, a power device, and an analog/digital converter (hereinafter, referred to as "ADC") for converting the inputted video signals into digital signals.
  • ADC analog/digital converter
  • the multi screen system has a function of regulating image quality deviation of each PDP in each driving circuit for driving PDPs included in the corresponding regions of the inputted video signals.
  • Fig. 1 is a block diagram illustrating a multi screen plasma display panel device according to an embodiment of the present invention.
  • Fig. 2 is a detailed diagram illustrating a driving circuit of Fig. 1.
  • a multi screen plasma display panel device which has a simplified structure of whole circuits by sharing a part of circuits for driving each PDP because image quality deviation of each plasma display panel which forms a multi screen plasma display panel is stored and compensated.
  • a multi screen plasma display panel device comprising: at least two or more plasma display panels interconnected and arranged in a matrix structure; an video processing means for transmitting inputted video signals to a corresponding region represented by each plasma display panel included in the whole screen; and at least two or more driving circuits for driving the corresponding plasma display panel.
  • the driving circuit is configured to set screen compensating information for compensating image quality deviation of each plasma display panel.
  • a multi screen plasma display panel comprising: at least two or more plasma display panels interconnected and arranged in a matrix structure; an video processing means for transmitting inputted video signals to a corresponding region represented by each plasma display panel included in the whole screen; and at least two or more driving circuit for driving the corresponding plasma display panel.
  • the video processing means is configured to set screen compensating information for compensating image quality deviation of each plasma display panel.
  • Fig. 1 is a block diagram illustrating a multi screen plasma display panel device according to an embodiment of the present invention.
  • a multi screen is formed by connecting four PDPs vertically and horizontally.
  • each PDP 11 ⁇ 14 is referred to as a first quadrant, a second quadrant, a third quadrant and a fourth quadrant.
  • each PDP 11-14 is configured as 480x853 pixels, and an inputted video signal is driven as 256 gradation and 60Hz.
  • the PDP 11 of the first quadrant displays a screen region formed by scan lines 1-480 and data lines 1-853
  • the PDP 12 of the second quadrant displays a screen region formed by scan lines 1-480 and scan lines 854-1706
  • the PDP 13 of the third quadrant displays a screen region formed by scan lines 481-960 and data lines 1-853
  • the multi screen plasma display panel device comprises an video processing unit 10 for converting inputted video signals S into digital signals (RGB) D, four PDPs 11-14 for forming a multi screen, and four driving circuits 21-24 for driving the PDPs.
  • RGB digital signals
  • the video processing unit 10 comprises an ADC 20 for converting inputted video signals S into digital signals D, a buffer 30 for temporarily storing the converted digital signals D, and an extension processing unit 40 for dividing the digital signals D stored in the buffer 30 into digital signals D' representing each driving circuit and outputting the divided digital signals D' to the corresponding circuits 21-24.
  • Fig. 2 is a detailed diagram illustrating a driving circuit of Fig. 1.
  • Each driving circuit 21-24 includes a digital board 31, a data driving unit 32 and a scan driving unit 33.
  • the digital board 31 receives the digital signals D' outputted from the video processing unit 10, controls the data driving unit 32 and the scan driving unit 33 to display a corresponding region, and compensates image quality deviation in each PDP.
  • the data driving unit 32 drives horizontal electrode lines (data (address) electrode) of the corresponding PDPs 11- 14, and the scan driving unit 33 drives vertical electrode lines (scan (Y and X) electrode) of the corresponding PDPs 11-14.
  • FIG. 2 shows the example where the digital board 31 is included each driving circuit 21-24, the present invention is not limited to the particular forms disclosed.
  • each driving circuit 21-24 digital boards included in each driving circuit 21-24 are unified into one, and the unified digital board is included in the video processing unit.
  • the digital board 31 compensates image quality deviation is described.
  • the same conversion is not performed on the whole screen in each video signal converting step, and the screen is divided into a plurality of regions. Then, the image quality of a plurality of regions become uniform by differentiating video signal conversion in each region.
  • the whole screen is divided into a plurality of regions (first quadrant, second quadrant, third quadrant, fourth quadrant), and the screen is regulated in each region.
  • a frame stored in a memory device of a video processing unit or a driving circuit is divided in each region, and a changeable constant is designated in each region, thereby regulating the screen in each region.
  • input gradations are XR, XG and XB. If values of r(i), g(i), b(i) are determined to the four PDPs 11-14, output pulses YR(i), YG(i) and YB(i) are determined to the four PDPs 11-14.
  • the brightness may be different in the same white gradation. Accordingly, when the input gradation X is "0", the black level constant B(i) is set so that the output gradation Y(i) may be "0". Also, when the input gradation X is "255", the picture control constant C(i) is set so that four output gradations Y(i) may be identical. As a result, the white brightness can be regulated.
  • Y(i) is the output gradation
  • C(i) is the picture control constant
  • B(i) is the black level constant
  • a, b, c, d are invariable numbers.
  • the values of r(i), g(i), b(i), C(i) and B(i) can be designated to values represented by gradations 0-255 in each region, and the screen including the four regions may be uniformly regulated by fomring a new frame obtained by converting gradation values depending on the designated invariable numbers.
  • the digital board 31 of each driving circuit 21-24 does not perform the above calculation algorithm, there is provided an example where the screen including four regions may be uniformly regulated by storing each conversion value in the LUT (look-up table).
  • gamma values and APL (Average Picture Level) values which affect the screen uniformity may be set through the above-described calculation algorithm, or they are stored in the LUT, thereby regulating the screen to have uniformity.
  • the uniform screen can be represented by regulating screen deviation in each region included in a plurality of PDPs.
  • circuit which are repeatedly used in driving circuits corresponding to each PDP may be unified.
  • the circuits which can reduce the repeated usage may be an video processing unit, a digital board, a driving circuit and a power supply unit.

Abstract

A multi screen plasma display panel is provided. The multi screen plasma display panel comprises: at least two or more plasma display panels interconnected and arranged in a matrix structure; an video processing means for transmitting inputted video signals to a corresponding region represented by each plasma display panel included in the whole screen; and at least two or more driving circuits for driving the corresponding plasma display panel. Here, the driving circuit is configured to set screen compensating information for compensating image quality deviation of each plasma display panel.

Description

MULTI SCREEN PLASMA DISPLAY PANEL DEVICE
[Technical Field]
The present invention generally relates to a multi screen plasma display panel driving device, and more specifically, to a device for driving a multi screen plasma display panel with a simpler circuit by sharing circuits for driving a plurality of plasma display panels (hereinafter, referred to as "PDP").
[Background Art] Generally, a large screen video display device with a multi screen system is configured to connect a plurality of PDPs. Each of the plurality of PDPs is driven by each driving circuit, and video signals are inputted in each driving circuit corresponding to each region, and represented in the PDP screen.
Each driving circuit includes a digital board, a power device, and an analog/digital converter (hereinafter, referred to as "ADC") for converting the inputted video signals into digital signals.
Meanwhile, in each PDP, image quality deviation of brightness, color coordinates and gradation characteristics is generated by manufacturing processes or structural differences. In order to solve the image quality deviation, the multi screen system has a function of regulating image quality deviation of each PDP in each driving circuit for driving PDPs included in the corresponding regions of the inputted video signals.
However, as the number of PDPs for forming one multi screen increases, the number of driving circuits for dependently driving each PDP also increases.
[Brief Description of the Drawings]
Fig. 1 is a block diagram illustrating a multi screen plasma display panel device according to an embodiment of the present invention.
Fig. 2 is a detailed diagram illustrating a driving circuit of Fig. 1.
[Detailed Description of the Invention]
It is an object of the present invention to provide a multi screen plasma display panel device which has a simplified structure of whole circuits by sharing a part of circuits for driving each PDP because image quality deviation of each plasma display panel which forms a multi screen plasma display panel is stored and compensated. In an embodiment, there is provided a multi screen plasma display panel device comprising: at least two or more plasma display panels interconnected and arranged in a matrix structure; an video processing means for transmitting inputted video signals to a corresponding region represented by each plasma display panel included in the whole screen; and at least two or more driving circuits for driving the corresponding plasma display panel. Here, the driving circuit is configured to set screen compensating information for compensating image quality deviation of each plasma display panel.
In another embodiment, there is provided a multi screen plasma display panel comprising: at least two or more plasma display panels interconnected and arranged in a matrix structure; an video processing means for transmitting inputted video signals to a corresponding region represented by each plasma display panel included in the whole screen; and at least two or more driving circuit for driving the corresponding plasma display panel. Here, the video processing means is configured to set screen compensating information for compensating image quality deviation of each plasma display panel.
[Preferred Embodiments]
The present invention will be described in detail with reference to the accompanying drawings. Fig. 1 is a block diagram illustrating a multi screen plasma display panel device according to an embodiment of the present invention.
Referring to Fig. 1, a multi screen is formed by connecting four PDPs vertically and horizontally. For the convenience of explanation, each PDP 11~14 is referred to as a first quadrant, a second quadrant, a third quadrant and a fourth quadrant. In this embodiment, each PDP 11-14 is configured as 480x853 pixels, and an inputted video signal is driven as 256 gradation and 60Hz.
The PDP 11 of the first quadrant displays a screen region formed by scan lines 1-480 and data lines 1-853, the PDP 12 of the second quadrant displays a screen region formed by scan lines 1-480 and scan lines 854-1706, the PDP 13 of the third quadrant displays a screen region formed by scan lines 481-960 and data lines 1-853, and the PDP
14 of the fourth quadrant displays a screen region formed by scan lines 481-960 and data lines 854-1706.
In the embodiment, the multi screen plasma display panel device comprises an video processing unit 10 for converting inputted video signals S into digital signals (RGB) D, four PDPs 11-14 for forming a multi screen, and four driving circuits 21-24 for driving the PDPs.
The video processing unit 10 comprises an ADC 20 for converting inputted video signals S into digital signals D, a buffer 30 for temporarily storing the converted digital signals D, and an extension processing unit 40 for dividing the digital signals D stored in the buffer 30 into digital signals D' representing each driving circuit and outputting the divided digital signals D' to the corresponding circuits 21-24.
Fig. 2 is a detailed diagram illustrating a driving circuit of Fig. 1.
Each driving circuit 21-24 includes a digital board 31, a data driving unit 32 and a scan driving unit 33. The digital board 31 receives the digital signals D' outputted from the video processing unit 10, controls the data driving unit 32 and the scan driving unit 33 to display a corresponding region, and compensates image quality deviation in each PDP.
The data driving unit 32 drives horizontal electrode lines (data (address) electrode) of the corresponding PDPs 11- 14, and the scan driving unit 33 drives vertical electrode lines (scan (Y and X) electrode) of the corresponding PDPs 11-14.
Although Fig. 2 shows the example where the digital board 31 is included each driving circuit 21-24, the present invention is not limited to the particular forms disclosed.
In another embodiment, digital boards included in each driving circuit 21-24 are unified into one, and the unified digital board is included in the video processing unit. Hereinafter, a specific process wherein the digital board 31 compensates image quality deviation is described.
In the multi screen plasma display panel, the same conversion is not performed on the whole screen in each video signal converting step, and the screen is divided into a plurality of regions. Then, the image quality of a plurality of regions become uniform by differentiating video signal conversion in each region.
The whole screen is divided into a plurality of regions (first quadrant, second quadrant, third quadrant, fourth quadrant), and the screen is regulated in each region.
That is, a frame stored in a memory device of a video processing unit or a driving circuit is divided in each region, and a changeable constant is designated in each region, thereby regulating the screen in each region.
For example, since the brightness and color coordinates of RGB of the four PDPs 11-14 are different, white color coordinates are adjusted by regulating output pulses of RGB.
Suppose that input gradations are XR, XG and XB. If values of r(i), g(i), b(i) are determined to the four PDPs 11-14, output pulses YR(i), YG(i) and YB(i) are determined to the four PDPs 11-14.
The above relations are represented by [Equation 1].
[Equation 1]
YR(i) = r(i)xR YG(i) = g(i)x G
YB(ι) = b(i)xB
Although color coordinates are regulated by the above-described way, the brightness may be different in the same white gradation. Accordingly, when the input gradation X is "0", the black level constant B(i) is set so that the output gradation Y(i) may be "0". Also, when the input gradation X is "255", the picture control constant C(i) is set so that four output gradations Y(i) may be identical. As a result, the white brightness can be regulated.
The above relations are represented by [Equation 2]
[Equation 2] 7(0 = (a x C(i) + b)x X + cx (B(i) + d)
Here, Y(i) is the output gradation, C(i) is the picture control constant, B(i) is the black level constant, and a, b, c, d are invariable numbers.
Therefore, the values of r(i), g(i), b(i), C(i) and B(i) can be designated to values represented by gradations 0-255 in each region, and the screen including the four regions may be uniformly regulated by fomring a new frame obtained by converting gradation values depending on the designated invariable numbers.
Here, an example configured to perform the above-described calculation algorithm in the digital board 31 of each driving circuit 21-24 is described.
However, when the digital board 31 of each driving circuit 21-24 does not perform the above calculation algorithm, there is provided an example where the screen including four regions may be uniformly regulated by storing each conversion value in the LUT (look-up table).
That is, after PDPs and driving circuits are fabricated, gradation values of each PDP are detected through examination of a measurer before shipping, and the results are stored in the LUT and inputted in the memory.
Although the white coordinates and brightness regulation are described herein, gamma values and APL (Average Picture Level) values which affect the screen uniformity may be set through the above-described calculation algorithm, or they are stored in the LUT, thereby regulating the screen to have uniformity. [Industrial Applicability]
As discussed earlier, in a multi screen plasma display panel device according to an embodiment of the present invention, the uniform screen can be represented by regulating screen deviation in each region included in a plurality of PDPs. As a result, circuit which are repeatedly used in driving circuits corresponding to each PDP may be unified.
The circuits which can reduce the repeated usage may be an video processing unit, a digital board, a driving circuit and a power supply unit.
While the invention is susceptible to various modifications and alternative forms, specific embodiments have been shown by way of example in the drawings and described in detail herein. However, it should be understood that the invention is not limited to the particular forms disclosed. Rather, the invention covers all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined in the appended claims.

Claims

[What is Claimed is]
1. A multi screen plasma display panel device comprising: at least two or more plasma display panels interconnected and arranged in a matrix structure; an video processing means for transmitting inputted video signals to a corresponding region represented by each plasma display panel included in the whole screen; and at least two or more driving circuits for driving the corresponding plasma display panel, wherein the driving circuit is configured to set screen compensating information for compensating image quality deviation of each plasma display panel.
2. The device according to claim 1, wherein the video processing means comprises: an ADC (analog digital converter) for converting the video signals into digital signals for driving the driving circuits; a memory means for storing the digital signals; and an extension processing means for dividing the whole digital signals into digital signals corresponding to each driving circuit.
3. The device according to claim 1, wherein the driving circuit comprises: a data driving means for driving a vertical electrode line of the plasma display panel; a scan driving means for driving a horizontal electrode line of the plasma display panel; and a digital board for controlling the data driving means and the scan driving means in response to the video signals and compensating the image quality deviation.
4. The device according to claim 3, wherein the digital board is configured to set screen compensating information for compensating image quality deviation of a corresponding region represented by each plasma display panel included in the whole screen.
5. The device according to claim 4, wherein the digital board includes a memory means for storing the screen compensating information set to compensate image quality deviation of the corresponding region included in the whole screen represented by each plasma display panel.
6. The device according to claim 5, wherein the memory means stores a look-up table.
7. The device according to one of claims 1 to 6, wherein the screen compensating information is at least one or more constants for changing at least one or more parameters for affecting one of white color coordinates, white color brightness and brightness in each gradation level by each corresponding plasma display panel.
8. The device according to claim one of claims 1 to 6, wherein the screen compensating information is at least one or more constants for changing one of gamma value and APL (Average Picture Level).
9. A multi screen plasma display panel comprising: at least two or more plasma display panels interconnected and arranged in a matrix structure; an video processing means for transmitting inputted video signals to a corresponding region represented by each plasma display panel included in the whole screen; and at least two or more driving circuit for driving the corresponding plasma display panel, wherein the video processing means is configured to set screen compensating information for compensating image quality deviation of each plasma display panel.
10. The panel according to claim 9, wherein the video processing means comprises: an ADC (analog digital converter) for converting the video signal into a digital signal for driving the driving circuit; a memory means for storing the digital signal; an extension processing means for dividing the whole digital signals into digital signals corresponding to each driving circuit; and a digital board for receiving the video signal to compensate the image quality deviation.
11. The panel according to claim 9, wherein the driving circuit comprises: a data driving means for driving a vertical electrode line of the plasma display; and a scan driving means for driving a horizontal electrode line of the plasma display panel.
12. The panel according to claim 10, wherein the digital board is configured to set screen compensating information for compensating image quality deviation of the corresponding region of the whole screen represented by each plasma display panel.
13. The panel according to claim 12, wherein the digital board includes a memory means for storing the screen compensating information set to compensate image quality deviation of the corresponding region of the whole screen represented by each plasma display panel.
14. The panel according to claim 13, wherein the memory means stores a look-up table.
15. The panel according to one of claims 9 to 14, wherein the screen compensating information is at least one or more constants for changing at least one or more parameters for affecting one of white color coordinates, white color brightness and brightness in each gradation level by each corresponding plasma display panel.
16. The panel according to one of claims 9 to 14, wherein the screen compensating information is at least one or more constants for changing one of gamma value and APL (Average Picture Level).
PCT/KR2004/000379 2003-02-28 2004-02-24 Multi screen plasma display panel device WO2004077395A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2003-0012605 2003-02-28
KR1020030012605A KR20040077157A (en) 2003-02-28 2003-02-28 Multi screen plasma display panel device

Publications (1)

Publication Number Publication Date
WO2004077395A1 true WO2004077395A1 (en) 2004-09-10

Family

ID=32923760

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2004/000379 WO2004077395A1 (en) 2003-02-28 2004-02-24 Multi screen plasma display panel device

Country Status (2)

Country Link
KR (1) KR20040077157A (en)
WO (1) WO2004077395A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1863002A1 (en) * 2005-03-23 2007-12-05 Mitsubishi Electric Corporation Display device
US20170238041A1 (en) * 2016-02-17 2017-08-17 Christopher Alsante Consumer electronic entertainment and display system
CN107977182A (en) * 2017-12-07 2018-05-01 深圳吉迪思电子科技有限公司 A kind of display screen drive system and method
US10838613B2 (en) 2016-02-17 2020-11-17 Trufan Llc Consumer electronic entertainment and display system
CN114141184A (en) * 2020-09-04 2022-03-04 瑞鼎科技股份有限公司 Multi-screen display device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100721940B1 (en) * 2005-04-29 2007-05-25 삼성에스디아이 주식회사 Gamma Correction Apparatus of Organic Electroluminescent Display and Gamma Correction Method of the same
KR102430577B1 (en) * 2015-10-30 2022-08-08 엘지디스플레이 주식회사 Multivision System And the Method of Driving Thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08202313A (en) * 1995-01-20 1996-08-09 Fujitsu General Ltd Multi-video system
JPH10124003A (en) * 1996-10-18 1998-05-15 Fujitsu General Ltd Multi-screen plasma display device
JPH10124004A (en) * 1996-10-18 1998-05-15 Fujitsu General Ltd Multi-screen plasma display device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08202313A (en) * 1995-01-20 1996-08-09 Fujitsu General Ltd Multi-video system
JPH10124003A (en) * 1996-10-18 1998-05-15 Fujitsu General Ltd Multi-screen plasma display device
JPH10124004A (en) * 1996-10-18 1998-05-15 Fujitsu General Ltd Multi-screen plasma display device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1863002A1 (en) * 2005-03-23 2007-12-05 Mitsubishi Electric Corporation Display device
EP1863002A4 (en) * 2005-03-23 2009-01-21 Mitsubishi Electric Corp Display device
US20170238041A1 (en) * 2016-02-17 2017-08-17 Christopher Alsante Consumer electronic entertainment and display system
US10838613B2 (en) 2016-02-17 2020-11-17 Trufan Llc Consumer electronic entertainment and display system
CN107977182A (en) * 2017-12-07 2018-05-01 深圳吉迪思电子科技有限公司 A kind of display screen drive system and method
CN114141184A (en) * 2020-09-04 2022-03-04 瑞鼎科技股份有限公司 Multi-screen display device

Also Published As

Publication number Publication date
KR20040077157A (en) 2004-09-04

Similar Documents

Publication Publication Date Title
KR20060028075A (en) The color transforming device using the brightness information of the image and display device comprising it
KR100691553B1 (en) Video signal processing circuit and television receiver
US6340961B1 (en) Method and apparatus for displaying moving images while correcting false moving image contours
KR20000016955A (en) Method and apparatus for processing video pictures, in particular for large area flicker effect reduction
WO2008036551A2 (en) Display uniformity correction
WO2008036689A2 (en) Frame rate control method and system
CN101562002A (en) Controller, hold-type display device, elctronic apparatus and signal adjusting method
US6924778B2 (en) Method and device for implementing subframe display to reduce the pseudo contour in plasma display panels
KR20070015516A (en) White balance adjustment device and video display device
KR20160054141A (en) Display Device and Driving Method Thereof
WO2008036610A2 (en) Gamma uniformity correction method and system
CN100397451C (en) Method and apparatus for calculating an average picture level and plasma display using the same
WO2004077395A1 (en) Multi screen plasma display panel device
US20030156225A1 (en) Gradation correction apparatus
JPH1013849A (en) Gamma correction system for pdp
JP2005128534A (en) Gray scale expression method in plasma display panel and driving apparatus for plasma display panel
KR100432666B1 (en) A driving apparatus and method of plasma display panel
KR20080002579A (en) Liquid crystal display device gamma-error
JP3344173B2 (en) Multi-panel display
JPH1013848A (en) White balance adjustment system for plasma display panel
JPH10124004A (en) Multi-screen plasma display device
US20070159431A1 (en) Liquid crystal display device and liquid crystal driver
JP2001249655A (en) Display device
KR101133552B1 (en) The color transforming device using the brightness information of the image and display device comprising it
US6906759B2 (en) Device and method for subfield coding of picture data using first subfields having different on-periods and second subfields having identical on-periods

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase