WO2005074254A1 - フレーム巡回型ノイズ低減方法およびフレーム巡回型ノイズ低減装置 - Google Patents
フレーム巡回型ノイズ低減方法およびフレーム巡回型ノイズ低減装置 Download PDFInfo
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- WO2005074254A1 WO2005074254A1 PCT/JP2005/001624 JP2005001624W WO2005074254A1 WO 2005074254 A1 WO2005074254 A1 WO 2005074254A1 JP 2005001624 W JP2005001624 W JP 2005001624W WO 2005074254 A1 WO2005074254 A1 WO 2005074254A1
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 125000004122 cyclic group Chemical group 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 230000001174 ascending effect Effects 0.000 claims description 9
- 230000007423 decrease Effects 0.000 claims description 6
- 230000002542 deteriorative effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 23
- 230000000694 effects Effects 0.000 description 12
- 230000006866 deterioration Effects 0.000 description 5
- 238000012935 Averaging Methods 0.000 description 4
- 240000007643 Phytolacca americana Species 0.000 description 3
- 238000009499 grossing Methods 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 210000001525 retina Anatomy 0.000 description 3
- 206010047571 Visual impairment Diseases 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
Classifications
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- 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
- G09G3/2007—Display of intermediate tones
- G09G3/2018—Display of intermediate tones by time modulation using two or more time intervals
- G09G3/2022—Display of intermediate tones by time modulation using two or more time intervals using sub-frames
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/20—Image enhancement or restoration using local operators
- G06T5/30—Erosion or dilatation, e.g. thinning
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T5/00—Image enhancement or restoration
- G06T5/10—Image enhancement or restoration using non-spatial domain filtering
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
- H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
-
- 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
-
- 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
- G09G2320/0261—Improving the quality of display appearance in the context of movement of objects on the screen or movement of the observer relative to 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
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0266—Reduction of sub-frame artefacts
-
- 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
- G09G2320/10—Special adaptations of display systems for operation with variable images
- G09G2320/106—Determination of movement vectors or equivalent parameters within the image
-
- 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
- G09G3/2803—Display of gradations
Definitions
- the present invention provides a frame recursive noise reduction method and a frame recursive noise that are used for an image display device that divides one field period into a plurality of subfields and displays gradation by a combination of light emission for each subfield. It relates to a reduction device. Background art
- the subfield method is a method in which one field period is divided into a plurality of subfields having a predetermined luminance weight, and image display is performed by controlling light emission and non-light emission for each subfield. For example, to display 256 gradations, one field period is divided into eight subfields, and the luminance weight of each subfield is set to “1,” “2,” “4,” and “8. ”,“ 16 ”,“ 32 ”,“ 64 ”, and“ 128 ”.
- each bit may be assigned to eight sub-fields in order from the least significant bit to control emission and non-emission. Since the luminescence of these eight subfields is visually integrated, it is possible to display halftones (for example, published by the Industrial Research Institute, Hiraki Uchiike and Shigeo Mikoshiba: “All about Plasma Display” 1 Pp. 65-177).
- the arrangement of the subfields is not particularly limited. For example, as shown in FIG. 1A, the subfields are arranged in ascending order from the one with the smallest luminance weight (hereinafter referred to as “ascending coding”) or the figure. As shown in Fig. 1B, there are those in which the luminance weights are arranged in descending order from the one with the largest luminance weight (hereinafter referred to as "descending coding").
- noise reduction methods and noise reduction devices that reduce noise included in image signals and improve the S / N ratio have been proposed, and are also used in image display devices using plasma display panels (for example, Japanese Unexamined Patent Publication No. Gazette).
- a frame recursive noise reduction method is well known as an effective one (for example, see Nikkan Kogyo Shimbun Publisher: Takahiko Fuukiki, “Multidimensional Signal Processing of TV Images”, p. 190).
- an image signal has strong autocorrelation between frames, but the noise component included in the image signal has no autocorrelation.
- the frame cyclic noise reduction device uses this characteristic to reduce noise, and reduces the noise component by averaging the image for each frame.
- FIG. 2 is a circuit block diagram showing an example of a frame cyclic noise reduction device in a conventional example.
- the moving image area is detected based on the difference signal between the frames, and the amount of recursion k (0 ⁇ k ⁇ l) is set small for the moving image area to suppress the afterimage.
- the noise reduction effect is obtained by setting the quantity k large.
- noise reduction device since there is a trade-off relationship between the noise reduction effect and the degree of blur in the moving image region, it has been difficult to suppress the blur in the moving image region while obtaining a good noise reduction effect. Therefore, there is a problem that the noise reduction effect is sacrificed to suppress the blur in the moving image area, or the blur in the moving image area is sacrificed to obtain a large noise reduction effect.
- subfield blur the phenomenon that the edge of an image becomes unclear. It is known that image quality degradation occurs (for example, refer to Japanese Patent Application Laid-Open No. 2002-229504).
- image quality degradation occurs (for example, refer to Japanese Patent Application Laid-Open No. 2002-229504).
- subfield blur generation mechanism will be described.
- Figure 3 shows the emission status of the subfield over time when the gradation level “63” is displayed at pixels A to E using the ascending coding shown in 14 shows a visual intensity distribution.
- pixels A to E have brightness weights of “1 J,” “2”, “4”, “8”, “16”,
- subfield blur has been described using a display region with a sharp edge as an example.However, in an actual display image such as an image taken by a TV camera, the edge portion of a moving image region is often blurred . In such a case, in the subfield display using the ascending order coding, as shown in FIG. 5, the subfield at the edge of the edge of the moving image area where the gradation level decreases along the moving direction, as shown in FIG. The degree of blur is worse than the edge blur of the original display image. Conversely, in the subfield display using descending coding, as shown in Fig. 6, the subfield blur at the edge of the moving image area on the side where the gradation level increases along the moving direction is emphasized.
- This subfield blur becomes more conspicuous as the blur of the edge portion in the input image becomes larger, and becomes more conspicuous as the moving speed of the moving image area becomes faster.
- Such subfield blur cannot be eliminated by changing the arrangement of the subfields.
- noise removal is performed using the above-described frame recursive noise reduction device.
- the subfield blur is emphasized due to the blur at the edge portion of the moving image region and is noticeably recognized.
- the present invention has been made to solve such a problem, and realizes a frame recursive noise reduction method and a frame recursive noise reduction device capable of preventing deterioration of subfield blur and reducing noise.
- the purpose is to: Disclosure of the invention
- the present invention provides a frame cyclic noise reduction method used in an image display device that divides one field period into a plurality of subfields and displays gradation by a combination of light emission for each subfield.
- the present invention is characterized in that an area in which the edge portion of an image is unclear and in which subfield blur is deteriorated is detected, and the amount of circulation is made different between the area in which subfield blur is deteriorated and the other area.
- FIG. 1 is a diagram showing an example of the arrangement of subfields in the subfield method.
- FIG. 2 is a circuit block diagram of a frame recursive noise reduction device in a conventional example.
- FIG. 3 is a diagram showing the light emission state of the subfield and the distribution of the visible intensity on the retina when displaying a still image.
- FIG. 4 is a diagram showing the light emission state of the subfield and the distribution of the visual intensity on the retina when displaying a moving image.
- FIG. 5 is a diagram showing the degree of blurring at the edge of the moving Hi area in ascending coding.
- FIG. 6 is a diagram showing the degree of blur at the edge of the moving image area in descending coding.
- FIG. 7 is a circuit block diagram of the frame recursive noise reduction device according to the embodiment of the present invention.
- FIG. 8 is a circuit block diagram of a motion amount detection unit of the frame recursive noise reduction device.
- Figure 9 shows the circuit block diagram of the luminance change area detection unit of the frame recursive noise reduction device.
- FIG. 10 is a diagram showing input / output characteristics of a coring unit of the frame recursive noise reduction device.
- FIG. 11 is a diagram illustrating an example of an input image.
- FIG. 12 is a diagram showing signals of each unit of the frame recursive noise reduction device according to the embodiment of the present invention.
- FIG. 13 is a diagram showing signals of various parts of the frame recursive noise reduction device.
- FIG. 14 is a circuit block diagram of a cyclic amount determining unit of the frame cyclic noise reduction apparatus.
- FIG. 15 is a diagram showing a relationship between a moving amount and a cyclic amount of the frame cyclic noise reduction apparatus.
- FIG. 16 is a diagram showing signals of respective parts of the frame recursive noise reduction device. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 7 is a circuit block diagram of the frame recursive noise reduction device according to the embodiment of the present invention, which includes a frame memory 10, a difference value calculation unit 20, a motion amount detection unit 30, and a luminance change area detection unit 4. 0, a cyclic amount determination unit 50, a multiplier 60, a multiplier 70, and an adder 80.
- the difference value calculation unit 20 obtains a difference between the image signal of the previous frame and the image signal of the current frame, and outputs the difference signal to the motion amount detection unit 30 and the luminance change area detection unit 40 as a difference signal.
- the motion amount detection unit 30 detects the motion amount of the moving image area in the image based on the difference signal, and outputs the detected motion amount to the cyclic amount determination unit 50 as a motion amount signal.
- the luminance change area detection unit 40 Based on the differential signal and its sign, the luminance change area detection unit 40 generates an image area in which the sign of the differential signal is positive, that is, an area in which the signal level decreases with the movement of the image (hereinafter, referred to as “the luminance change area”).
- an image area where the sign of the difference signal is negative that is, an area where the signal level increases (hereinafter, abbreviated as “increased luminance change area”).
- one of the reduced luminance change area and the increased luminance change area is set as a luminance change area, and a luminance change signal indicating the luminance change area is output to the cyclic amount determination unit 50.
- the recursive amount determination unit 50 determines the recursive amount k according to the motion amount signal and the luminance change signal, and outputs the determined amount to the multipliers 60 and 70.
- the amount of repetition k (0 ⁇ k ⁇ l) represents the degree of time averaging of the image signal for each frame period.
- k 0, the time is not averaged, and the time increases as the amount of repetition k increases.
- the average degree increases. Therefore, the noise reduction effect increases as the amount of repetition k increases, but subfield poke tends to occur.
- the multiplier 60 multiplies the input image signal, that is, the image signal of the current frame by a multiplier (11 k). Further, the multiplier 70 multiplies the output from the frame memory 10, that is, the image signal of the previous frame, by a cyclic amount k.
- the adder 80 adds the outputs from the multiplier 60 and the multiplier 70 and outputs the result as an output image signal. The output from the adder 80 is stored in the frame memory 10 and used for processing in the next frame.
- FIG. 8 is a diagram illustrating an example of a circuit block of the motion amount detection unit 30.
- the absolute value part 31 calculates the absolute value of the difference signal output from the difference value calculation part 20 and outputs it as an absolute value signal.
- the low-pass filter unit 32 performs a smoothing process on the absolute value signal. This is provided to suppress the noise in the differential signal, and is provided to prevent the amount of motion from becoming too large due to the effect of the noise.
- a smoothing process for example, a median filter can be used.
- FIG. 9 is a diagram illustrating an example of a circuit block of the luminance change area detection unit 40.
- the brightness change area detection unit 40 detects an area where subfield blur may be deteriorated based on the difference signal.
- the coring unit 41 is provided for enhancing noise included in the differential signal, and has, for example, input / output characteristics as shown in FIG.
- the value of the threshold TH is adjusted according to the amplitude of the noise to be cut.
- the signal whose low amplitude component has been cut by the coring unit 41 is smoothed by the low-pass filter unit 42.
- the low-pass filter section 42 is provided to detect the luminance change region more widely.
- the sign discriminating section 43 discriminates the sign of the signal that has been subjected to the smoothing process, and outputs the sign signal to the luminance change area judging section 44.
- the luminance change area determination section 4 4 is an area where subfield blur may be bad based on the code signal. Is determined according to the sequence of the subfields, and is output to the cyclic amount determination unit 50 as a luminance change signal.
- FIG. 11 is a diagram showing an example of an input image
- FIG. 12 is a diagram showing signals of each part of the frame recursive noise reduction apparatus according to the embodiment when the image shown in FIG. 11 is input. The image signal of the current frame and the image signal of the previous frame are shown. The figure shows one line each of the previous frame image signal and the difference signal obtained by subtracting the previous frame image signal from the current frame image signal.
- Figure 12 shows an image area where the sign of the difference signal is positive, that is, a reduced-luminance change area where the signal level decreases as the image moves, and an image area where the sign of the difference signal becomes negative, that is, the signal
- the brightened area where the level increases is shown by oblique lines.
- the luminance change area determination unit 44 determines that the code signal is a positive area, that is, the reduced luminance change area is an area where the subfield blur is deteriorated, and outputs a luminance change signal. Conversely, when the subfields are arranged in descending order, the area where the code signal is negative, that is, the area where the luminance increases, is determined as the area where the subfield blur deteriorates.
- the autocorrelation of the still image between frames is strong as described above, so the region where the difference signal is not 0 is a region where the image is moving, that is, subfield blur may occur. It is possible to detect an area that is likely to cause subfield blurring from the positive and negative signs of the difference signal. Also, as shown in FIG. 11B, even in an image in which a dark object moves in a light background, the subfield blur deteriorates from the difference signal and its sign as shown in FIG. Potential regions can be detected.
- the arrangement of the subfields is not limited to ascending order coding or descending order coding, and the luminance at which the subfield blur is emphasized in the subfield arrangement and in both the dimming change area and the increasing luminance changing area. It can also be a change area.
- the traveling amount determination unit 50 in the embodiment of the present invention also determines the traveling amount k based on the motion amount signal so that the traveling amount decreases as the motion amount increases.
- the amount of repetition with respect to the motion amount in the luminance change region and the region other than the luminance change region depends on the luminance change signal indicating the region where the subfield blur is deteriorated.
- the value of k is different.
- FIG. 14 is a diagram showing an example of a circuit configuration of the traveling amount determination unit 50.
- the recursive amount determining unit 50 includes a conversion table LUT A 51 for converting a motion amount for use in an area other than the luminance change area into a recursive amount k, and a conversion table LUTB for use in the luminance change area.
- the selector 53 switches the output of the conversion table LUT A 51 and the output of the LUTB 52 based on the luminance change signal. More specifically, two conversion tables LUTA 51 and LUTB 52 having characteristics as shown in FIG. 15 are provided. If it is not the luminance change area, the amount of repetition from the conversion table LUTA 51 is selected and used as the repetition amount signal k.
- FIG. 16 shows the current frame image signal, the previous frame image signal, and the image shown in FIG. 11A, that is, the image signal in which a bright object moves to the left in the background and the edge portion is blurred.
- One line of each differential signal is shown.
- the broken line indicated by (LUTA) in FIG. 16 is an image signal when the frame recursive noise reduction processing is performed using the conversion table LUT A
- the broken line indicated by (LUTB) in FIG. The image signal when the frame recursive noise reduction processing is performed using the conversion table LUTB is shown.
- the area where the subfield poke may be deteriorated that is, the luminance change area is the left edge portion where the sign of the difference signal is positive. Therefore, in order to prevent the subfield blur from worsening, it is necessary to keep the left edge portion steep. Good.
- the amount of rotation determination unit 50 Is configured to select the conversion table LUT B in the brightness change area and select the conversion table LUT A in other areas.
- the amount of repetition of the conversion table LUT A is used. By doing so, a great noise reduction effect can be obtained.
- the amount of recursion is set separately for the area where subfield blur may be worse and the area where subfield blur is not worse.
- a small value it is possible to prevent the deterioration of subfield blur, and in other regions, a large amount of recursion can obtain a sufficient noise reduction effect.
- two conversion tables having characteristics as shown in FIG. 15 have been described as an example.
- the value of the amount of recursion is not limited to this. The same effect can be obtained if the amount of circulation in the region can be set to be equal to or smaller than the region other than the luminance change region.
- the noise reduction apparatus detects an area where subfield blur may be emphasized as a luminance change area, and adjusts the motion amount so as to reduce the subfield blur in that area. Control the value of the amount of circulation k for. Therefore, while maintaining a large noise reduction effect in the region other than the luminance change region, subfield poke can be reduced in the luminance change region, and deterioration of subfield blur can be prevented.
- the cyclic noise reduction method and the cyclic noise reduction apparatus of the present invention can prevent deterioration of subfield blur and reduce noise, so that one field period is divided into a plurality of subfields and each subfield is divided into subfields. It is useful as a noise reduction device of an image display device that displays gradation by a combination of light emission.
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Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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EP05704384A EP1605689A4 (en) | 2004-01-30 | 2005-01-28 | NOISE REDUCTION PROCEDURE AND NOISE REDUCTION DEVICE OF FRAME CIRCULATION TYPE |
US10/550,894 US7567299B2 (en) | 2004-01-30 | 2005-01-28 | Method and device of frame-cyclic noise reduction |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004-022906 | 2004-01-30 | ||
JP2004022906A JP3801179B2 (ja) | 2004-01-30 | 2004-01-30 | フレーム巡回型ノイズ低減方法 |
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WO2005074254A1 true WO2005074254A1 (ja) | 2005-08-11 |
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PCT/JP2005/001624 WO2005074254A1 (ja) | 2004-01-30 | 2005-01-28 | フレーム巡回型ノイズ低減方法およびフレーム巡回型ノイズ低減装置 |
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US (1) | US7567299B2 (ja) |
EP (1) | EP1605689A4 (ja) |
JP (1) | JP3801179B2 (ja) |
KR (1) | KR100666391B1 (ja) |
CN (1) | CN100418353C (ja) |
WO (1) | WO2005074254A1 (ja) |
Cited By (1)
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JP5341509B2 (ja) * | 2006-05-23 | 2013-11-13 | パナソニック株式会社 | 画像表示装置、画像表示方法、プラズマディスプレイパネル装置、プログラム、集積回路、及び、記録媒体 |
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KR20070046418A (ko) * | 2005-10-31 | 2007-05-03 | 엘지전자 주식회사 | 플라즈마 디스플레이 장치 |
KR20070047551A (ko) * | 2005-11-02 | 2007-05-07 | 엘지전자 주식회사 | 플라즈마 디스플레이 장치 |
WO2008018006A2 (en) * | 2006-08-09 | 2008-02-14 | Koninklijke Philips Electronics N.V. | Image rate increasing |
US8260077B2 (en) * | 2006-11-29 | 2012-09-04 | Mstar Semiconductor, Inc. | Method and apparatus for eliminating image blur |
JP2008160419A (ja) * | 2006-12-22 | 2008-07-10 | Sanyo Electric Co Ltd | 動き検出装置 |
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- 2005-01-28 EP EP05704384A patent/EP1605689A4/en not_active Withdrawn
- 2005-01-28 CN CNB2005800001465A patent/CN100418353C/zh not_active Expired - Fee Related
- 2005-01-28 WO PCT/JP2005/001624 patent/WO2005074254A1/ja active IP Right Grant
- 2005-01-28 US US10/550,894 patent/US7567299B2/en not_active Expired - Fee Related
- 2005-01-28 KR KR1020057019900A patent/KR100666391B1/ko not_active IP Right Cessation
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5341509B2 (ja) * | 2006-05-23 | 2013-11-13 | パナソニック株式会社 | 画像表示装置、画像表示方法、プラズマディスプレイパネル装置、プログラム、集積回路、及び、記録媒体 |
Also Published As
Publication number | Publication date |
---|---|
KR100666391B1 (ko) | 2007-01-09 |
US20060192896A1 (en) | 2006-08-31 |
US7567299B2 (en) | 2009-07-28 |
EP1605689A1 (en) | 2005-12-14 |
EP1605689A4 (en) | 2008-12-10 |
JP3801179B2 (ja) | 2006-07-26 |
KR20050119211A (ko) | 2005-12-20 |
CN1765121A (zh) | 2006-04-26 |
CN100418353C (zh) | 2008-09-10 |
JP2005217847A (ja) | 2005-08-11 |
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