EP1403843A1 - Verfahren zur Darstellung von Bildern auf einem Anzeigegerät, und dazugehöriges Anzeigegerät - Google Patents
Verfahren zur Darstellung von Bildern auf einem Anzeigegerät, und dazugehöriges Anzeigegerät Download PDFInfo
- Publication number
- EP1403843A1 EP1403843A1 EP20030021482 EP03021482A EP1403843A1 EP 1403843 A1 EP1403843 A1 EP 1403843A1 EP 20030021482 EP20030021482 EP 20030021482 EP 03021482 A EP03021482 A EP 03021482A EP 1403843 A1 EP1403843 A1 EP 1403843A1
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- European Patent Office
- Prior art keywords
- sub
- field
- fields
- divided
- divided sub
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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
- G09G3/2033—Display of intermediate tones by time modulation using two or more time intervals using sub-frames with splitting one or more sub-frames corresponding to the most significant bits into two or more sub-frames
-
- 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
- G09G3/2029—Display of intermediate tones by time modulation using two or more time intervals using sub-frames the sub-frames having non-binary weights
-
- 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
- G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes
-
- 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
- G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
- G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
-
- 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
Definitions
- the invention relates to an apparatus for displaying images at a certain gray scale through the use of sub-fields, such as a plasma display unit, and a method of displaying images in such an apparatus, and more particularly to such an apparatus which is capable of reducing big-area flickers generated when a television signal having a relatively low vertical-synchronization frequency or a similar signal is displayed, and a method of displaying images in such an apparatus.
- intermediate gray scales are displayed generally in accordance with a sub-field process.
- a sub-field process is a process applicable to an image-displaying apparatus having a high response speed, such as a plasma display unit.
- an image signal is quantized, and resultant one-field data is displayed in time-division for each of gray scale bits.
- a field is divided into a group of small fields each called a sub-field.
- a weight determined in accordance with the number of light-emissions which number is associated with each of gray scale bits is assigned to each of sub-fields. Images are successively reproduced with the sub-fields, and images over one field are accumulated by virtue of integration effect of visual sense. Thus, there are obtained natural images with intermediate gray scales.
- input analog image signals are quantized or A/D converted into 8-bit luminance signals associated with gray scale luminance data indicating luminances one of which is twice greater than another.
- data of the quantized image signals is stored in a frame buffer memory.
- B1 a bit having a highest luminance
- B2 a bit having a second-highest luminance
- a ratio of luminances of the bits is 128: 64: 32: 16: 8: 4: 2: 1.
- a method of displaying images in accordance with a sub-field process hereinbelow is explained a method of displaying images, in which a display unit is driven separately in a scanning period and a sustaining period, with reference to FIG. 1.
- the method is applied to an AC color plasma display unit.
- one field is divided into first to eighth sub-fields SF1 to SF8.
- Each of the sub-fields SF1 to SF8 is comprised of a scanning period A and a sustaining discharge period B.
- Weights 128, 64, 32, 16, 8, 4, 2 and 1 are assigned to the sub-fields SF1 to SF8, respectively.
- a scanning period in the first sub-field SF1 data is written into each of pixels, based on display data of the bit B1 having the highest luminance. After data has been written into all of pixels, a sustaining discharge pulse is applied entirely to a display panel to thereby carry out light-emission only in pixels into which data has been written.
- pulses are applied to a display panel 256 times in the first sub-field SF1, for instance, in order to ensure sufficient luminance.
- pulses are applied to a display panel 128, 64, 32, 16, 8, 4 and 2 times in the second to eighth sub-fields SF1 to SF8, respectively.
- An order of sub-fields in the case that a field is designed such that a relative ratio of a luminance is reduced with the lapse of time, as illustrated in FIG. 1, is called a descending sub-field order
- an order of sub-fields in the case that a field is designed such that a relative ratio of a luminance is increased with the lapse of time is called an ascending sub-field, order.
- sub-fields may be arranged in various ways for displaying gray scales. However, even if sub-fields are arranged simply differently from the above-mentioned two orders, the following problems would be caused.
- a renewal speed of a display screen is generally set identical with a vertical-synchronization signal in a CRT-type display and a plasma display panel.
- optical stimulation a viewer receives at his/her eyes from a display screen is recognized as blinking of luminances which are in proportion to vertical-synchronization signals. If a repetition interval of the luminance blinking is long, a viewer could clearly recognize the blinking as flicker, whereas if a repetition interval of the luminance blinking is short, a viewer would recognize the blinking as continuous light-emission.
- a boundary interval between the former and latter intervals is called a critical fusion interval.
- a vertical synchronization frequency adapted in European TV standards is generally 50 Hz, and a repetition period of a vertical synchronization signal and a repetition period of an image signal are designed equal to 20 ms, which is almost equal to the above-mentioned critical fusion period.
- Whether a viewer recognizes blinking of luminances as flickers or as continuous light-emission is dependent on a luminance level of a displayed image signal. Even if the same image is displayed, a viewer is more likely to recognize blinking of luminances as flickers, if a displayed image signal had a higher luminance level.
- flickers flickers observed in an entire display screen, caused by a low vertical-synchronization frequency, are in particular called big area flickers. Big-area flickers reduce display quality in particular when signals having a high luminance level are displayed.
- technique called “100 Hz TV” is recently frequently used in a CRT-type television set.
- “100 Hz TV” a vertical frequency is doubled on a side of a receiver, and further, image data for one image plane is stored in a memory, and the data stored in a memory is read out twice at a doubled speed.
- the technique "100 Hz TV” reduces big-area flickers to a level a viewer can scarcely detect flickers.
- a method called "pseudo-100 Hz" is used in a plasma display panel.
- some of upper grade sub-fields are divided into a plurality of sub-fields, and the thus divided sub-fields are arranged in such a manner that a frequency of 50 Hz of an image signal is increased up to 100 Hz, thereby reducing big-area flickers.
- Japanese Patent Application Publication No. 2001-42818 has suggested an example of an arrangement of divided sub-fields.
- the Publication merely discloses an arrangement of divided sub-fields, but does not mention an order in which divided sub-fields are displayed or turned on.
- Japanese Patent Application Publication No. 11-15435 has suggested an order in which sub-fields each having a weight are displayed.
- a field is divided into five sub-fields SF1 to SF5.
- Weights 1, 2, 3, 4 and 6 are assigned to the sub-fields SF1 to SF5, respectively. That is, the sub-fields SF1 to SF5 are arranged in an order of a magnitude of weights.
- FIG. 3 is a table showing which sub-field or sub-fields is(are) turned on among the five sub-fields SF1 to SF5.
- the first sub-field SF1 having a weight of 1 and the second sub-field SF2 having a weight of 2 are turned on for a gray scale of 3.
- the second sub-field SF2 having a weight of 2 having a weight of 2
- the third sub-field SF3 having a weight of 3 having a weight of 3
- the fourth sub-field SF4 having a weight of 4 are turned on.
- a method of displaying sub-fields includes the steps of assigning smaller numbers to sub-fields having a smaller weight, as illustrated in FIG. 2, and selecting a combination of sub-fields to be displayed at each of gray scales such that a sub-field or sub-fields having a smaller number or weight is(are) preferentially turned on, as illustrated in FIG. 3.
- the method has a principal object of suppressing moving picture pseudo-frame, and suppressing flickers is a second object.
- the sub-fields in the method disclosed in Japanese Patent Application Publication No. 11-15435 are not divided sub-fields. Hence, it is assumed that the method of displaying divided sub-fields is applied to the method of displaying sub-fields, suggested in the above-mentioned Japanese Patent Application Publication No. 2001-42818.
- the fourth and fifth sub-fields SF4 and SF5 are divided sub-fields having weights 4 and 6, respectively.
- the divided sub-field or sub-fields is(are) not turned on at certain gray scales, though the divided sub-field or sub-fields can be turned on.
- the fourth sub-field SF4 can be turned on at a gray scale of 4.
- the first and third sub-fields SF1 and SF3 having weights 1 and 3, respectively, are actually turned on.
- an object of the present invention to provide a method of displaying images which is capable of efficiently reducing big-area flickers when an image signal having a problem of big-area flickers is caused to have a pseudo-100 Hz by dividing a sub-field having a great weight into a plurality of sub-fields.
- a method of displaying images including the steps of dividing at least one sub-field among a plurality of sub-fields constituting a field of an image signal, into a plurality of sub-fields each having a predetermined luminance weight, and pseudo-doubling a field frequency of the image signal, characterized by preferentially selecting a divided sub-field to a non-divided sub-field for a gray scale at which images can be displayed with the divided sub-field.
- the divided sub-field is selected preferentially to a non-divided sub-field for the gray scale when the field frequency is smaller than 60 Hz.
- An order of displaying the sub-fields when the field frequency is equal to or greater than 60 Hz may be different from an order of displaying the sub-fields when the field frequency is smaller than 60 Hz.
- the non-divided sub-field is selected preferentially to the divided sub-field when the field frequency is equal to or greater than 60 Hz, and the divided sub-field is selected preferentially to the non-divided sub-field for the gray scale when the field frequency is smaller than 60 Hz.
- the divided sub-fields are arranged in an order of a magnitude of the luminance weight.
- the non-divided sub-fields are arranged in an order of a magnitude of the luminance weight.
- the method may be applied to a method of displaying images in a plasma display unit.
- an apparatus for displaying images which divides at least one sub-field among a plurality of sub-fields constituting a field of an image signal, into a plurality of sub-fields each having a predetermined luminance weight, and pseudo-doubles a field frequency of the image signal, characterized in that a divided sub-field is preferentially selected to a non-divided sub-field for a gray scale at which images can be displayed with the divided sub-field.
- the divided sub-field is selected preferentially to a non-divided sub-field for the gray scale when the field frequency is smaller than 60 Hz.
- An order of displaying the sub-fields when the field frequency is equal to or greater than 60 Hz may be different from an order of displaying the sub-fields when the field frequency is smaller than 60 Hz.
- the non-divided sub-field is selected preferentially to the divided sub-field when the field frequency is equal to or greater than 60 Hz, and the divided sub-field is selected preferentially to the non-divided sub-field for the gray scale when the field frequency is smaller than 60 Hz.
- the divided sub-fields are arranged in an order of a magnitude of the luminance weight.
- the non-divided sub-fields are arranged in an order of a magnitude of the luminance weight.
- the apparatus is comprised of a plasma display unit.
- FIG. 4 is a block diagram of an apparatus 10 for displaying images, in accordance with a preferred embodiment of the present invention.
- the apparatus 10 is comprised of an analog-digital (A/D) converter 21, a reverse-gamma ( y ) compensator 22, a first data-arranger 23, a central processing unit (CPU) 24, a frame buffer memory 25, a second data-arranger 26, a first data-driver 27, a second data-driver 28, a synchronization separator 29, a system clock generator 30, a sub-field generator 31, a timing generator 32, a scanning driver 33, and a plasma display panel (PDP) 34.
- A/D analog-digital
- y reverse-gamma
- CPU central processing unit
- the A/D converter 21 receives RGB image signals, and quantizes them.
- the images signals quantized by the A/D converter 21 are compensated for by the reverse-gamma compensator 22 with respect to brightness data.
- Data signals output from the reverse-gamma compensator 22 are arranged in the first data-arranger 23 such that the data signals are suitable for being stored in the frame buffer memory 25.
- the RGB image signals are mixed with one another to obtain addresses different for each of gray scale bits.
- the central processing unit 24 carries out read/write control between the frame buffer memory 25 and a previous or next stage.
- Data indicative of each of gray scale bits of images read out for each of sub-fields is transmitted to the second data-arranger 26 through the central processing unit 24. Then, the data is rearranged into a final arrangement, and then, transmitted to the first and second data-drivers 27 and 28.
- the synchronization separator 29 separates synchronization signals out of the RGB image signals.
- the system clock generator 30 outputs a system clock.
- Vertical-synchronization signals among the synchronization signals separated out of the RGB image signals in the synchronization separator 29 are transmitted to the sub-field generator 31, and are used as reference signals for a sub-field sequence.
- the sub-field generator 31 determines an order of arranging sub-fields, based on both the system clock transmitted from the system clock generator 30 and the vertical-synchronization signals.
- the timing generator 32 receives output signals transmitted from the sub-field generator 31, and transmits a timing signal to the central processing unit 24 and the scanning driver 33.
- the scanning driver 33 drives scanning electrodes formed on the plasma display panel 34, in accordance with the timing signals received from the timing generator 32.
- Scanning pulses are applied to scanning electrodes one by one, and a data pulse is applied to a selected data electrode in synchronization with application of the scanning pulse. After the linear scanning has been effected all over a panel, sustaining discharge is effected entirely over the panel, resulting in emission of color light.
- FIG. 5 shows an arrangement of sub-fields generated in the apparatus 10.
- the sub-field generator 31 generates first to fifth sub-fields SF1 to SF5 all of which constitutes one field. Weights 4, 6, 1, 2 and 3 (figures in parentheses) are assigned to the sub-fields SF1 to SF5, respectively.
- each of the first and second sub-fields SF1 and SF2 is divided into two sub-fields.
- the sub-fields SF1 and SF2 to be divided into a plurality of sub-fields are arranged in advance of sub-fields SF3 to SF5 not to be divided into a plurality of sub-fields. Furthermore, a sub-field having a smaller weight is arranged in advance of a sub-field having a higher weight among both sub-fields to be divided into a plurality of sub-fields and both sub-fields not to be divided.
- the first SF1 having a weight of 4 is first arranged, and the second sub-field SF2 having a weight of 6 is second arranged among sub-fields to be divided into a plurality of sub-fields.
- the third sub-field SF3 having a weight of 1 is first arranged, the fourth sub-field SF 4 having a weight of 2 is second arranged, and the fifth sub-field SF5 having a weight of 3 is third arranged.
- FIG. 6 illustrates an example of the sub-field arrangement including the first and second sub-fields SF1 and SF2 divided into two sub-fields.
- the first sub-field SF1 is divided into two sub-fields SF1-1 and SF1-2
- the second sub-field SF2 is divided into two sub-fields SF2-1 and SF2-2.
- a weight of 2 which means a half of the weight 4 of the first sub-field SF1
- a weight of 3 which means a half of the weight 6 of the second sub-field SF2
- the third sub-field SF3, the fourth sub-field SF4, the divided sub-field SF1-1 and the divided sub-field SF2-1 are arranged in this order in the first 10 msec
- the fifth sub-field SF5, the divided sub-field SF1-2 and the divided sub-field SF2-2 are arranged in this order in the second 10 msec.
- the divided sub-fields are arranged behind the non-divided sub-fields.
- FIG. 7 is a table showing which sub-field or sub-fields is(are) to be turned on among the first to fifth sub-fields SF1 to SF5 in association with each of gray scales in the apparatus 10 in accordance with the embodiment.
- the divided sub-field SF1-1, SF1-2, SF2-1 or SF2-2 is displayed preferentially to the non-divided sub-field SF3, SF4 and SF5 for a gray scale in which the divided sub-field SF1-1, SF1-2, SF2-1 or SF2-2 can be displayed.
- the gray scale number is equal to 4, though the third sub-field SF3 having a weight of 1 and the fifth sub-field SF5 having a weight of 3 may be displayed, the first sub-field SF1 having a weight of 4, that is, the divided sub-field SF1-1 having a weight of 2 and the divided sub-field SF1-2 having a weight of 2 are displayed in the embodiment in place of the third and fifth sub-fields SF3 and SF5.
- the gray scale number is equal to 6, though the third sub-field SF3 having a weight of 1, the fourth sub-field SF4 having a weight of 2 and the fifth sub-field SF5 having a weight of 3 may be displayed, the first sub-field SF1 having a weight of 4, that is, the divided sub-field SF1-1 having a weight of 2 and the divided sub-field SF1-2 having a weight of 2, and the fourth sub-field SF4 having a weight of 2 are displayed in the embodiment in place of the third, fourth and fifth sub-fields SF3, SF4 and SF5.
- the above-mentioned order of displaying the sub-fields is determined by the central processing unit 24.
- a smaller number is assigned to divided sub-fields, and a combination of sub-fields is selected for each of gray scales so as to allow a sub-field having a smaller number to be displayed preferentially to other sub-fields having a higher number. Accordingly, as explained in the above-mentioned examples where the gray scale numbers are 4 and 6, the divided sub-fields are absolutely turned on for a gray scale in which the divided sub-field or sub-fields can be turned on.
- the divided sub-field or sub-fields is(are) displayed preferentially to the non-divided sub-fields, ensuring that the number of gray scales at which pseudo-100 Hz display is accomplished can be increased in comparison with the conventional apparatus. This means that a ratio of gray scales at which flickers are generated to the total number of gray scales can be reduced, and hence, flickers can be reduced.
- FIG. 8 is a table showing both sub-fields to be displayed in the apparatus 10 for each of gray scales 1 to 16 and sub-fields to be displayed in the conventional apparatus illustrated in FIG. 3.
- a circle ( ⁇ ) indicates a sub-field to be displayed in the conventional apparatus illustrated in FIG. 3, and a triangle ( ⁇ ) indicates a sub-field to be displayed in the apparatus 10.
- gray scales there are six gray scales at which the divided sub-field or sub-fields is(are) displayed in the apparatus 10, but is(are) not displayed in the conventional apparatus illustrated in FIG. 3. Such gray scales are indicated with a double circle (o) at the rightmost column.
- the gray scales 1 to 16 the divided sub-field or sub-fields is(are) displayed in the apparatus 10, but is(are) not displayed in the conventional apparatus illustrated in FIG. 3, at gray scales 4, 5, 6, 10, 11 and 12.
- the divided sub-field or sub-fields is(are) displayed preferentially to the non-divided sub-fields, and hence, the number of the divided sub-fields to be displayed can be increased.
- the number of gray scales at which pseudo-100 Hz display is accomplished can be increased, and thus, a ratio of gray scales at which flickers are generated to the total number of gray scales can be reduced. Accordingly, flickers can be reduced.
- the above-mentioned method to be carried out in the apparatus 10 may be carried out only when a field frequency is smaller than 60 Hz, in which case, as a method of displaying a sub-field to be carried out when a field frequency is equal to or greater than 60 Hz, any method may be selected. For instance, sub-fields may be turned on in a descending order of a weight. As an alternative, when some of sub-fields having a high weight is divided, non-divided sub-field or sub-fields may be displayed preferentially to divided sub-field or sub-fields.
- An order of displaying sub-fields when a field frequency is equal to or greater than 60 Hz may be different from an order of displaying sub-fields when a field frequency is smaller than 60 Hz, in which case, there may be selected an order of displaying sub-fields where divided sub-field or sub-fields are displayed preferentially to non-divided sub-field or sub-fields like the above-mentioned embodiment, as an order of displaying sub-fields when a field frequency is smaller than 60 Hz.
- the apparatus 10 in accordance with the above-mentioned embodiment may be applied to all apparatuses which display images through a sub-field process.
- the apparatus 10 in accordance with the above-mentioned embodiment may be applied to a plasma display panel (PDP), a digital micro-mirror device (DMD) or an organic electroluminescence device.
- PDP plasma display panel
- DMD digital micro-mirror device
- organic electroluminescence device organic electroluminescence
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of Gas Discharge Display Tubes (AREA)
- Transforming Electric Information Into Light Information (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2002285711 | 2002-09-30 | ||
JP2002285711A JP3656995B2 (ja) | 2002-09-30 | 2002-09-30 | 画像表示方法及び画像表示装置 |
Publications (1)
Publication Number | Publication Date |
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EP1403843A1 true EP1403843A1 (de) | 2004-03-31 |
Family
ID=31973403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP20030021482 Ceased EP1403843A1 (de) | 2002-09-30 | 2003-09-23 | Verfahren zur Darstellung von Bildern auf einem Anzeigegerät, und dazugehöriges Anzeigegerät |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1403843A1 (de) |
JP (1) | JP3656995B2 (de) |
CN (1) | CN1497518A (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1647966A1 (de) * | 2004-10-18 | 2006-04-19 | Tohoku Pioneer Corporation | Treiberschaltung fur eine Licht emittierende Anzeigetafel und eine elektronische Maschine, auf der die Treiberschaltung montiert ist |
EP1801775A1 (de) * | 2005-12-20 | 2007-06-27 | Deutsche Thomson-Brandt Gmbh | Verfahren zur Bildanzeige auf einer organischen lichtemittierenden Anzeige und entsprechende Vorrichtung |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI469118B (zh) * | 2012-07-16 | 2015-01-11 | Raydium Semiconductor Corp | 顯示裝置及其源極驅動器 |
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JPH07271325A (ja) * | 1994-02-08 | 1995-10-20 | Fujitsu Ltd | フレーム内時分割型表示装置及びフレーム内時分割型表示装置に於ける中間調表示方法 |
EP0838799A1 (de) * | 1996-10-23 | 1998-04-29 | Nec Corporation | Anzeigesystem mit Graustufen |
US5986640A (en) * | 1992-10-15 | 1999-11-16 | Digital Projection Limited | Display device using time division modulation to display grey scale |
JP2001042818A (ja) * | 1999-07-28 | 2001-02-16 | Nec Corp | プラズマディスプレイの表示方法 |
EP1176578A2 (de) * | 2000-07-27 | 2002-01-30 | Sony Corporation | Verfahren und Einrichtung zur Steuerung einer Anzeige |
EP1990795A1 (de) * | 2006-02-28 | 2008-11-12 | Matsushita Electric Industrial Co., Ltd. | Ansteuerverfahren für eine plasmaanzeigetafel und plasmaanzeigevorrichtung |
-
2002
- 2002-09-30 JP JP2002285711A patent/JP3656995B2/ja not_active Expired - Fee Related
-
2003
- 2003-09-23 EP EP20030021482 patent/EP1403843A1/de not_active Ceased
- 2003-09-30 CN CNA031349528A patent/CN1497518A/zh active Pending
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US5986640A (en) * | 1992-10-15 | 1999-11-16 | Digital Projection Limited | Display device using time division modulation to display grey scale |
JPH07271325A (ja) * | 1994-02-08 | 1995-10-20 | Fujitsu Ltd | フレーム内時分割型表示装置及びフレーム内時分割型表示装置に於ける中間調表示方法 |
EP0838799A1 (de) * | 1996-10-23 | 1998-04-29 | Nec Corporation | Anzeigesystem mit Graustufen |
JP2001042818A (ja) * | 1999-07-28 | 2001-02-16 | Nec Corp | プラズマディスプレイの表示方法 |
EP1176578A2 (de) * | 2000-07-27 | 2002-01-30 | Sony Corporation | Verfahren und Einrichtung zur Steuerung einer Anzeige |
EP1990795A1 (de) * | 2006-02-28 | 2008-11-12 | Matsushita Electric Industrial Co., Ltd. | Ansteuerverfahren für eine plasmaanzeigetafel und plasmaanzeigevorrichtung |
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Title |
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PATENT ABSTRACTS OF JAPAN vol. 1996, no. 02 29 February 1996 (1996-02-29) * |
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 19 5 June 2001 (2001-06-05) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1647966A1 (de) * | 2004-10-18 | 2006-04-19 | Tohoku Pioneer Corporation | Treiberschaltung fur eine Licht emittierende Anzeigetafel und eine elektronische Maschine, auf der die Treiberschaltung montiert ist |
EP1801775A1 (de) * | 2005-12-20 | 2007-06-27 | Deutsche Thomson-Brandt Gmbh | Verfahren zur Bildanzeige auf einer organischen lichtemittierenden Anzeige und entsprechende Vorrichtung |
CN101341525B (zh) * | 2005-12-20 | 2010-12-08 | 汤姆森特许公司 | 在有机发光显示器上显示图像的方法及各自装置 |
EP1964092B1 (de) * | 2005-12-20 | 2019-08-07 | Thomson Licensing | Verfahren zur bildanzeige auf einer organischen lichtemittierenden anzeige und entsprechende vorrichtung |
Also Published As
Publication number | Publication date |
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JP2004125853A (ja) | 2004-04-22 |
JP3656995B2 (ja) | 2005-06-08 |
CN1497518A (zh) | 2004-05-19 |
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