EP0976122A1 - Dispositif d'adressage d'un ecran matriciel - Google Patents
Dispositif d'adressage d'un ecran matricielInfo
- Publication number
- EP0976122A1 EP0976122A1 EP96942417A EP96942417A EP0976122A1 EP 0976122 A1 EP0976122 A1 EP 0976122A1 EP 96942417 A EP96942417 A EP 96942417A EP 96942417 A EP96942417 A EP 96942417A EP 0976122 A1 EP0976122 A1 EP 0976122A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sub
- video
- pixels
- stack
- stage
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 239000011159 matrix material Substances 0.000 title claims abstract description 14
- 230000015654 memory Effects 0.000 claims description 12
- 230000000737 periodic effect Effects 0.000 claims description 9
- 239000000470 constituent Substances 0.000 claims 1
- 239000003086 colorant Substances 0.000 description 43
- 230000000630 rising effect Effects 0.000 description 4
- 101100421503 Arabidopsis thaliana SIGA gene Proteins 0.000 description 3
- 101100042610 Arabidopsis thaliana SIGB gene Proteins 0.000 description 3
- 101100042613 Arabidopsis thaliana SIGC gene Proteins 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 241000283986 Lepus Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000010409 thin film Substances 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
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
-
- 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
- G09G3/2003—Display of colours
-
- 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
- G09G2300/04—Structural and physical details of display devices
- G09G2300/0439—Pixel structures
- G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0202—Addressing of scan or signal lines
- G09G2310/0205—Simultaneous scanning of several lines in flat 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
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
- G09G2310/0297—Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns
-
- 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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
- G09G3/3607—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 by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
- G09G5/39—Control of the bit-mapped memory
- G09G5/393—Arrangements for updating the contents of the bit-mapped memory
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
- G09G5/39—Control of the bit-mapped memory
- G09G5/399—Control of the bit-mapped memory using two or more bit-mapped memories, the operations of which are switched in time, e.g. ping-pong buffers
Definitions
- the present invention relates to a device for addressing a matrix screen such as a screen of the LCD or plasma type.
- the display surfaces of such screens generally comprise a plurality of sub-pixels P (i, j) representing one of the primary colors R, G or B and addressed through a crossed network of N horizontal lines and M vertical columns , each sub-pixel receiving through a switch which connects it to the adjacent column, during the addressing phase (line time), a sampled video signal.
- the spatial resolution of such screens depends on the number and on the mode of addressable sub-pixel combinations used to produce displayable pixels whose successive sequences constitute the video lines and columns of the image to be displayed.
- FIG. 1 illustrates a known mode of combination of sub-pixels, called mode L, used for addressing an orthogonal screen and consisting in producing a displayable pixel by combination of three sub-pixels R, G and B located on the same line.
- the horizontal resolution, noted Hr is equal to M / 3, and is reduced compared to the vertical resolution, noted Hv, whose value is equal to N.
- this combination mode requires a high number of sub-pixels, which significantly increases the cost of the screen.
- FIGS. 2 and 3 respectively illustrate a first variant and a second variant of a second known mode of combining sub-pixels, called Delta mode, used to address a screen of the DELTA type.
- Delta mode a second known mode of combining sub-pixels
- a displayable pixel is obtained by combination of three sub-pixels R, G and B located on the same horizontal line.
- R, G and B located on the same horizontal line.
- two successive lines are offset horizontally with respect to each other by a half sub-pixel
- the second variant represented in FIG. 3
- two successive lines are shifted horizontally relative to each other by a sub-pixel and a half.
- a column of displayable pixels has a width equal to three and a half times the width of a sub-pixel while in the second case, a column of displayable pixels has a width equal to four times and a half that of a sub-pixel.
- the horizontal resolution is reduced in a proportion of three and a half times compared to the vertical resolution
- the horizontal resolution is reduced in a proportion of four and a half times compared to the vertical resolution .
- the object of the invention is to provide a device for addressing a matrix screen making it possible to improve the horizontal resolution without degrading the vertical resolution too much.
- the device comprises a storage stage 70 and 1,98 receiving, via a demultiplexing stage 220, a plurality of sequences of digital data representing the previously scanned luminance video signals and delivering said luminance video signals to a multiplexing stage 230 for selecting a sequence of digital data corresponding to a given combination of sub-pixels among the plurality of sequences of digital data previously stored in said storage stage 70 and 198.
- the device according to the invention makes it possible to select a combination of sub-pixels making it possible to obtain a better compromise between the vertical resolution and the horizontal resolution whatever the type of screen used.
- FIG. 1 partially illustrates a first mode of combining the sub-pixels R, G and B of a matrix screen of the orthogonal type, used in the prior art
- FIG. 2 and 3 illustrate an application of the mode of combining sub-pixels of Figure 1 to a screen of the type
- FIG. 4 partially illustrates a first mode of combining the sub-pixels R, G and B of a matrix screen produced by an addressing device according to the invention applied to a screen of the orthogonal type;
- FIG. 5 partially illustrates a first variant of the mode of combining the sub-pixels R, G and B illustrated in Figure 4;
- FIG. 6 illustrates a second variant of the mode of combining the sub-pixels R, G and B illustrated in Figure 4;
- FIG. 7a and 7b partially illustrate a third and a fourth variant of the method of combining sub-pixels R, G and B illustrated in FIG. 4 applied to a matrix screen of the Delta type;
- FIG. 8 partially illustrates a second mode of combining the sub-pixels R, G and B produced by an addressing device according to the invention applied to a matrix screen of the orthogonal type;
- FIG. 9 partially illustrates a fifth variant of the mode of combining the sub-pixels R, G and B illustrated in Figure 4 applied to a matrix screen of the Delta type;
- FIG. 1 0 partially shows a first embodiment of an addressing device according to the invention
- FIG. 1 1 partially shows a second embodiment of an addressing device according to the invention
- Figures 1 2 to 1 4 show explanatory diagrams of the operation of the addressing device of Figure 1 0;
- Figures 1 5 and 1 6 show explanatory diagrams of the operation of the addressing device of Figure 1 1.
- FIG. 10 schematically illustrates a device for addressing a matrix screen, the surface of which comprises a plurality of sub-pixels R, G and B each receiving a luminance video signal. These pixels are distributed over the screen surface in a network of N physical lines and M physical columns at the intersections of which switches such as TFTs (Thin Film Transistors in English) are arranged in the case of LCD screens. These switches are used to connect, during the addressing phase, the pixels addressed to the physical columns.
- switches such as TFTs (Thin Film Transistors in English) are arranged in the case of LCD screens.
- the addressing device comprises a storage stage 70 and 1,98 receiving, via a demultiplexing stage 220, a plurality of sequences of digital data representing the luminance video signals previously digitized and delivering said luminance video signals a multiplexing stage 230 intended to select a sequence of digital data corresponding to a given combination of sub-pixels among the plurality of sequences of digital data previously stored in said storage stage 70 and 198.
- the storage stage 70 comprises a first memory 80 dedicated to the storage of digital data resulting from the sampling of the signals sent to the sub-pixels R, a second memory 82 dedicated to the storage of digital data resulting from the sampling of the signals sent to the sub-pixels V and a third memory 84 dedicated to the storage of digital data resulting from the sampling of the signals sent to the sub-pixels B.
- the storage stage 70 is connected, on the one hand, to a write control means 72 for the digital data in the memories 80, 82 and 84 and, on the other hand, to a read control means 74 of said data from memories 80, 82 and 84, said write control 72 and read 74 means are connected to a first synchronization means 76 of the write phases and the p reading hases.
- each of the memories 80, 82 and 84 comprises two distinct zones, that is to say a first zone 10 2 in which are written the digital data relating to the sub-pixels R, G and B of a given video line during a phase of writing given, and a second zone 1 04 from which are read, during said writing phase, the digital data relating to the sub-pixels R, G and B of a video line written during the previous writing phase.
- the storage stage 1 98 has two parallel branches, either a first branch in which is arranged a block 200 comprising at least three FIFO stacks, or a first stack of 202, a second stack 204 and a third stack 206 intended respectively to contain the video data relating to the sub-pixels R, G and B located on one of the physical lines constituting an even video line, and a second branch in which is arranged a block 21 0 also comprising at least three FIFO stacks, ie a fourth stack 21 2, a fifth stack 21 4 and a sixth stack 21 6 intended respectively to contain the video data relating to the sub-pixels R, G and B located on one of the physical lines constituting an odd video line.
- the 220 directs, on the one hand, the data relating to the sub-pixels R, G and B belonging to the odd video columns towards the block 200 so as to write said data, during a phase of writing a video line of duration D , respectively in the first part 202, the second stack 204 and the third stack 206, and on the other hand, the data relating to the sub-pixels R, G and B belonging to the even video columns towards the block 21 0, so as to writing said data, during the writing phase, respectively in the fourth stack 21 2, the fifth stack 21 4 and the sixth stack 21 6.
- a second synchronization means 240 is connected, on the one hand, to the demultiplexing stage 220 and delivers to this stage 220 a first periodic signal OW of frequency F controlling the writing of the relative video data to the sub-pixels R, G and B located on a odd video column respectively in the first stack 202, in the second stack 204 and in the third stack 206, and a second periodic signal EW of frequency F controlling the writing of the video data relating to the sub-pixels R, G and B located on an even video column respectively in the fourth stack 21 2, in the fifth stack 21 4 and in the sixth stack 21 6.
- This second synchronization means 240 is connected on the other hand, to the multiplexing stage 230, and delivers to this stage 230 a third periodic signal RD of frequency 2 * F controlling the reading of the video data relating to the sub-pixels of an even (respectively odd) video line selected by the multiplexing stage 230.
- the multiplexing stage 230 selects at a frequency 1 / D, from a date coinciding with half the duration D, a data sequence representing the sub-pixels belonging to a video line to be displayed previously stored in the '' one of the batteries 202, 204, 206, 21 2, 21 4 or 21 6.
- Figure 1 2 illustrates an example of addressing a Delta type screen, shown partially, using a device according to the invention.
- Each pixel is formed by the combination of three sub-pixels Rk, Vk and Bk.
- the signals SIG 1, SIG2, SIG3 represent the samples of the luminance signals sent respectively to the sub-pixels Rk, Vk and Rk, located on the same video column.
- the sub-pixels of the physical line Li respectively receive three sequences SIG 1, SIG2, SIG3 respectively comprising the samples R 1, R3, R5, ..., V 1, V3, V5, ..., and B2, B4 , B6, ...
- the sub-pixels of the physical line L ⁇ + 1 respectively receive three sequences SIG 1, SIG2, SIG3 respectively comprising the samples R2, R4, R6 V2, V4, V6 and B3, B5, B7 .
- Figure 1 4 shows the phase in which is effected on the one hand, writing of data on sub-pixels R, G and B of a video line LV, and on the other hand, reading data relating to the subpixels R, G and B of the previous video line LV-1, then the next phase, during which is effected, on the one hand, writing data on the subpixels R, G and B of a LV + 1 video line, and on the other hand, the reading of the data relating to the sub-pixels R, G and B of the LV video line written during the previous phase.
- the writing of said video line LV and the reading of said video LV- line 1 occur simultaneously and are synchronized by the first synchronization means 76 which sends to the control means of writing means 72 and of the read command 74 a W / R signal, represented in FIG. 1 4, allowing, on the one hand, to progressively write the video data relating to the sub-pixels R, G or B, and on the other hand , to read said data correlatively to the respective spatial positions of each of the sub-pixels R, G and B on the screen.
- the writing phase of line LV is illustrated by lines RSTW, WAB, WDA, and W / R while the reading phase of line LV-1 is illustrated by lines RSTR, RVAB, RVRDA, BDA, BRDA .
- the line RSTW represents an initialization signal of the writing phase
- the line WAB represents the successive addresses in the memories 80, 82, 84 in which the digital data representing the samples Rk, Vk and Bk will be stored successively.
- the line WDA represents said digital data transported respectively by data buses 86, 88, 90.
- the line W / R represents the synchronization signal of the successive writing and reading phases sent by the first synchronization means 76.
- the line RSTR represents a signal initialization of the reading phase.
- the line RVAB represents the successive addresses in the memories 80, 82 and 84 in which the digital data representing the samples Rk, Vk are already stored.
- the line RVRDA represents the data Rk, Vk read respectively on data buses 94 and 96.
- the line BAB represents the successive addresses in the memories 80, 82 and 84 in which the digital data representing the samples Bk are already stored, the line BRDA the Bk data read on bus 92.
- the data Rk, Vk and Bk represented on the line WDA are written progressively, while the data RVRDA and BRDA, previously written, are read correlatively to their respective positions on the surface of the screen.
- Figure 1 5 partially illustrates a stack 202 and a stack 210 and Figure 1 6 illustrates the phase during which, on the one hand, the writing of the data relating to the sub-pixels R, G and B of a LV video line, and on the other hand, the phase during which the data relating to the sub-pixels R, G and B of said LV video line previously written in the stacks 202 and 21 0 is read, then the phase, during which, on the one hand, the writing of the data relating to the sub-pixels R, G and B of the video line LV + 1, and on the other hand, the phase during which the reading of the data relating to the R, G and B sub-ptxels of said LV + 1 video line, previously written in stacks 202 and 21 0.
- the synchronization of said writing and reading phases is carried out by a second means synchronization 240 supplying, on the one hand, to the demultiplexing stage 220 a first periodic signal OW d e frequency F controlling the writing of the video data relating to the sub-pixels R, G and B located on an odd video column respectively in the stacks 202, 204 and 206, and a second periodic signal EW of frequency F controlling the writing of the video data relating to the sub-pixels R, G and B located on an even video column respectively in the stacks 21 2, 21 4 and 21 6, and, on the other hand, in the multiplexing stage 230 a third periodic signal RD of frequency 2 * F controlling the reading of the video data relating to the sub-pixels of an even (odd respectively) video column selected by the multiplexing stage 230.
- the line IE represents a signal for initializing the writing phase
- the line OW represents the signal for controlling the writing of the video data relating to the sub-pixels R, G and B located on a odd video segment
- the line EW represents the control signal for the writing of the video data relating to the sub-pixels R, G and B located on an even video column
- the line WDA represents the digital data to be written in the stacks 202 and 21
- the line IL represents an initialization signal of the reading phase
- the line RDA represents the data read
- the line OEE represents a signal for selection of the data relating to the sub-pixels R, G and B located on a column odd video
- the line EOE represents a signal for selecting the data relating to the sub-pixels R, G and B located on an even video column.
- the writing in the stack 202 of the video data relating to the sub-pixels R, G and B located on an odd video column is synchronized on each rising edge of the signal OW.
- the writing, in the stack 21 0, of video data relating to the sub-pixels R, G and B located on an even video column is synchronized on each rising edge of the signal EW.
- the signal RD allowing the reading of the digital data has a frequency double that of the signals OW and EW.
- the reading phases start when the batteries 202 and 21 2 are half full.
- the odd data are read on each rising edge of the signal RD from an instant coinciding with the writing, of the same data 321, located in this example at half of stack 202, and when the OEE signal has a logic high level.
- the even data are read at each rising edge of the signal RD at a time coinciding with the writing, in the stack 21 2, of the same 321 when the signal EOE has a logic high level.
- FIGS. 4 to 9 illustrate a combination of sub-pixels in which two physical lines Li and Li + 1 are used to constitute a video line of the image to be displayed, and said image is decomposed into an odd frame 9, 1 1, 1 3, 1 5, 1 7, 1 9 and 20 including odd video lines 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47 and 49, and a even frame 40, 42, 44, 46, 48, 50 and 52 comprising even video lines 54, 56, 58, 60, 62, 64, 65, 66, 67 and 68 said odd and even frames being offset, I a by relative to the other of a physical line, so as to allow an interlacing of the odd video lines with the even video lines.
- the physical lines Li used to form the even video lines 54, 56, 58, 64, 65 and 67 are also used to form the physical lines Li + 1 of the odd video lines respectively 21, 25, 29, 35, 39 and 43. This makes it possible to interleave said even video lines and said odd video lines.
- the multiplexing stage 220 selects the sequences of digital signals relating to two contiguous sub-pixels located on the line physical Li (respectively L ⁇ + 1) and has a sub-pixel located on the physical line L ⁇ + 1 (respectively Li), then the sequences of digital signals relating to a sub-pixel located on the line Li (respectively Li + 1) and to two sub-pixels located on the line L ⁇ + 1 (respectively Li) for addressing the pixel of a video line of the image to be displayed
- the multiplexing stage 220 selects the sequences of digital signals relating to a first sub-pixel located on the physical line Li and the sequences of digital signals relating to a second sub-pixel adjacent to the first sub-pixel, and located on the physical line Li + 1 to address a pixel of the video line 43 and 45 (respectively 67).
- This mode of combination is particularly suitable for uses which do not require good colo ⁇ met ⁇ e but rather require good finesse of detail, to the extent or on the one hand, it makes it possible to triple the horizontal resolution compared to the modes of combination of the prior art described above, and on the other hand, it causes aliasing known under the English term colored ahasing producing an iridescence of the details of the displayed image
- the video signals sent to the combined sub-pixels are sampled, either simultaneously or in spatial mode, that is to say at different times corresponding to the respective positions of said sub-pixels on the screen surface.
- the video signals sent to the sub-pixels p ( ⁇ , j) and p ( ⁇ + 1, j) respectively representing the primary colors V and R to constitute the first displayable pixel of the even video line 67 then the video signals sent to the sub-pixels p ( ⁇ , j + 1) and p ( ⁇ + 1, j + 1) respectively representing the primary colors B and V to constitute the second displayable pixel of said even video line 67.
- a fifth addressing example applied to a screen of the orthogonal type, illustrated by FIG. 6, for j varying periodically from 1 to M in steps of 3, and for six physical lines Li and Li + 1, L ⁇ + 2, Li + 3, L ⁇ -t-4 Li + 5 data located on the odd frame 13, we sample: - the video signals sent to the sub-pixels p (i, j), p (i + 1, j) and p ( i + 1, j + 1) representing respectively the primary colors R, G and B to constitute the first displayable pixel of the odd video line 29, then the video signals sent to the sub-pixels p (i, j + 1), p (i, j + 2) and p (i + 1, j + 2) respectively representing the primary colors V, B and R to constitute the second pixel of said odd video line 29, then the video signals sent to the sub-pixels p (i, j), p ( ⁇ + 1, j) and p (i + 1, j + 1) respectively representing the primary colors B, R and V to constitute the first
- a seventh example of addressing applied to a screen of the Delta type represented in FIG. 7b, for j varying periodically from 1 to M in steps of 3, for two physical lines Li and Li + 1 located on the odd video frame 17 , we sample: - the video signals sent to the sub-pixels p ( ⁇ , j), p (i, j + 1) and p (i + 1, j) respectively representing the primary colors R, G and B to constitute the first displayable pixel the odd video line 39, then the video signals sent to the sub-pixels p (i, j + 2), p (i + 1, j + 1) and p (i + 1, j + 2) representing respectively the primary colors B, R and V to constitute the second displayable pixel the odd video line 39, then the video signals sent to the sub-pixels p (i, j + 1), p (i + 1, j) and p (i + 1, j + 1) representing respectively the primary colors V, B and R to constitute the first displayable pixel the odd video line 41, then
- the resolution is improved, whatever the type of screen address.
- the resolution is equal to M * 2/3 and therefore double the resolution obtained by the addressing modes of these screens by devices of the prior art and the vertical resolution is equal to N / 2 for strictly vertical lines and to N for diagonal lines.
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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)
- Liquid Crystal Display Device Control (AREA)
- Control Of Gas Discharge Display Tubes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9515405A FR2742910B1 (fr) | 1995-12-22 | 1995-12-22 | Procede et dispositif d'adressage d'un ecran matriciel |
FR9515405 | 1995-12-22 | ||
PCT/FR1996/002013 WO1997023861A1 (fr) | 1995-12-22 | 1996-12-18 | Dispositif d'adressage d'un ecran matriciel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0976122A1 true EP0976122A1 (fr) | 2000-02-02 |
EP0976122B1 EP0976122B1 (fr) | 2009-03-04 |
Family
ID=9485892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96942417A Expired - Lifetime EP0976122B1 (fr) | 1995-12-22 | 1996-12-18 | Dispositif d'adressage d'un ecran matriciel |
Country Status (7)
Country | Link |
---|---|
US (1) | US6252613B1 (fr) |
EP (1) | EP0976122B1 (fr) |
JP (1) | JP4105228B2 (fr) |
KR (1) | KR100425248B1 (fr) |
DE (1) | DE69637857D1 (fr) |
FR (1) | FR2742910B1 (fr) |
WO (1) | WO1997023861A1 (fr) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
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US7286136B2 (en) | 1997-09-13 | 2007-10-23 | Vp Assets Limited | Display and weighted dot rendering method |
DE19746329A1 (de) | 1997-09-13 | 1999-03-18 | Gia Chuong Dipl Ing Phan | Display und Verfahren zur Ansteuerung des Displays |
DE19746576A1 (de) * | 1997-10-22 | 1999-04-29 | Zeiss Carl Fa | Verfahren für die Bilderzeugung auf einem Farbbildschirm und ein dazu geeigneter Farbbildschirm |
JP4158874B2 (ja) * | 2000-04-07 | 2008-10-01 | 株式会社日立プラズマパテントライセンシング | 画像表示方法および表示装置 |
US7027013B2 (en) | 2000-12-22 | 2006-04-11 | Ifire Technology, Inc. | Shared pixel electroluminescent display driver system |
US6720972B2 (en) | 2001-02-28 | 2004-04-13 | Honeywell International Inc. | Method and apparatus for remapping subpixels for a color display |
JP2003043990A (ja) * | 2001-07-31 | 2003-02-14 | Fujitsu Ltd | カラー画像表示方法 |
KR100489445B1 (ko) | 2001-11-29 | 2005-05-17 | 엘지전자 주식회사 | 플라즈마 표시 패널의 구동방법 |
JP2005351920A (ja) * | 2004-06-08 | 2005-12-22 | Semiconductor Energy Lab Co Ltd | 表示装置の制御回路及びそれを内蔵した表示装置・電子機器並びにその駆動方法 |
US7705821B2 (en) * | 2005-01-31 | 2010-04-27 | Semiconductor Energy Laboratory Co., Ltd. | Driving method using divided frame period |
US9928786B2 (en) * | 2006-10-13 | 2018-03-27 | Sharp Kabushiki Kaisha | Display device and signal converting device |
JP5441312B2 (ja) * | 2007-02-09 | 2014-03-12 | 株式会社ジャパンディスプレイ | 表示装置 |
TWI395195B (zh) * | 2008-07-30 | 2013-05-01 | Orise Technology Co Ltd | 共用同一遞色演算表的方法及使用其之顯示面板驅動方法 |
WO2012067038A1 (fr) * | 2010-11-15 | 2012-05-24 | シャープ株式会社 | Dispositif d'affichage à couleurs multi-primaires |
CN104992654B (zh) * | 2011-07-29 | 2019-02-22 | 深圳云英谷科技有限公司 | 显示器的子像素排列及其呈现方法 |
US20180168855A1 (en) * | 2016-12-15 | 2018-06-21 | Penguin Fingers, Llc | Joint compress cold pack |
JP7015324B2 (ja) * | 2017-08-31 | 2022-02-02 | クンシャン ゴー-ビシオノクス オプト-エレクトロニクス カンパニー リミテッド | ピクセル構造、oledディスプレイデバイス、および駆動方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE3634092A1 (de) * | 1986-10-07 | 1988-04-14 | Thomson Brandt Gmbh | Schaltungsanordnung zur verzoegerung eines digitalen signals |
ATE49075T1 (de) * | 1987-01-08 | 1990-01-15 | Hosiden Electronics Co | Flaches anzeigegeraet. |
US4792856A (en) * | 1987-04-14 | 1988-12-20 | Rca Licensing Corporation | Sampled data memory system as for a television picture magnification system |
JP2702941B2 (ja) * | 1987-10-28 | 1998-01-26 | 株式会社日立製作所 | 液晶表示装置 |
JPH0248863A (ja) * | 1988-08-10 | 1990-02-19 | Nec Corp | ディジタルビデオ信号処理回路 |
DE68923683T2 (de) * | 1988-11-05 | 1996-02-15 | Sharp Kk | Steuereinrichtung und -verfahren für eine Flüssigkristallanzeigetafel. |
US5841480A (en) * | 1989-09-07 | 1998-11-24 | Advanced Television Technology Center | Film to video format converter using least significant look-up table |
EP0428324A2 (fr) * | 1989-11-13 | 1991-05-22 | DELCO ELECTRONICS CORPORATION (a Delaware corp.) | Panneau d'affichage adressé en matrice et circuit de commande compatible avec un TRC |
JPH06332843A (ja) * | 1992-06-24 | 1994-12-02 | Seiko Epson Corp | 動画映像データ転送装置およびコンピュータシステム |
FR2703814B1 (fr) * | 1993-04-08 | 1995-07-07 | Sagem | Afficheur matriciel en couleurs. |
JP3219640B2 (ja) * | 1994-06-06 | 2001-10-15 | キヤノン株式会社 | ディスプレイ装置 |
-
1995
- 1995-12-22 FR FR9515405A patent/FR2742910B1/fr not_active Expired - Fee Related
-
1996
- 1996-12-18 EP EP96942417A patent/EP0976122B1/fr not_active Expired - Lifetime
- 1996-12-18 JP JP52335497A patent/JP4105228B2/ja not_active Expired - Fee Related
- 1996-12-18 WO PCT/FR1996/002013 patent/WO1997023861A1/fr active IP Right Grant
- 1996-12-18 DE DE69637857T patent/DE69637857D1/de not_active Expired - Lifetime
- 1996-12-18 US US09/077,379 patent/US6252613B1/en not_active Expired - Lifetime
- 1996-12-18 KR KR10-1998-0704070A patent/KR100425248B1/ko not_active IP Right Cessation
Non-Patent Citations (1)
Title |
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See references of WO9723861A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2742910A1 (fr) | 1997-06-27 |
US6252613B1 (en) | 2001-06-26 |
KR100425248B1 (ko) | 2004-07-27 |
FR2742910B1 (fr) | 1998-04-17 |
JP4105228B2 (ja) | 2008-06-25 |
WO1997023861A1 (fr) | 1997-07-03 |
JP2000502813A (ja) | 2000-03-07 |
KR19990071791A (ko) | 1999-09-27 |
DE69637857D1 (de) | 2009-04-16 |
EP0976122B1 (fr) | 2009-03-04 |
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