EP0907946A1 - Anzeigesystem und verfahren zur versorgung eines anzeigesystems mit einem bildsignal - Google Patents
Anzeigesystem und verfahren zur versorgung eines anzeigesystems mit einem bildsignalInfo
- Publication number
- EP0907946A1 EP0907946A1 EP97926993A EP97926993A EP0907946A1 EP 0907946 A1 EP0907946 A1 EP 0907946A1 EP 97926993 A EP97926993 A EP 97926993A EP 97926993 A EP97926993 A EP 97926993A EP 0907946 A1 EP0907946 A1 EP 0907946A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- image
- image signal
- display
- signal
- system clock
- 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
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000005070 sampling Methods 0.000 claims description 24
- 101100175003 Oryza sativa subsp. japonica RGB1 gene Proteins 0.000 claims description 19
- 230000010363 phase shift Effects 0.000 claims description 17
- 230000001360 synchronised effect Effects 0.000 description 8
- 230000000630 rising effect Effects 0.000 description 7
- VVNRQZDDMYBBJY-UHFFFAOYSA-M sodium 1-[(1-sulfonaphthalen-2-yl)diazenyl]naphthalen-2-olate Chemical compound [Na+].C1=CC=CC2=C(S([O-])(=O)=O)C(N=NC3=C4C=CC=CC4=CC=C3O)=CC=C21 VVNRQZDDMYBBJY-UHFFFAOYSA-M 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 239000003086 colorant Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 108010076504 Protein Sorting Signals Proteins 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- 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
- G09G5/395—Arrangements specially adapted for transferring the contents of the bit-mapped memory 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
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/12—Synchronisation between the display unit and other units, e.g. other display units, video-disc players
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/12—Overlay of images, i.e. displayed pixel being the result of switching between the corresponding input pixels
Definitions
- the invention relates to a display system according to the preamble of claim 1 and a method according to the preamble of claim 6.
- Display systems are used to display using a video signal or a television signal such as e.g. Display NTSC or PAL-Nor images, for example using liquid crystal displays (LCD).
- a video signal or a television signal such as e.g. Display NTSC or PAL-Nor images, for example using liquid crystal displays (LCD).
- LCD liquid crystal displays
- a clock-controllable control unit of a display system which is designed as an integrated circuit, is already known, in which several, identically constructed, integrated circuits are provided for each part of the display, a character generator being arranged which, after entering a code from a Storage unit reads out output signals that are shown on the display.
- the object of the invention is to improve the image quality and in particular to reduce shadow effects and image blur.
- the object of the invention is achieved by the features of claim 1 and by the features of claim 6.
- a particularly good image quality is achieved if the supplied image signal is synchronized depending on the system frequency of the display system.
- Figure 1 shows schematically the structure of a display system and Figure 2 is a diagram with signal sequences.
- FIG. 1 shows a display system in the form of logical blocks, which can be implemented either from individual components or as an integrated circuit and / or in the form of software.
- FIG. 1 shows a display 1 which is designed, for example, as a liquid crystal display, as a vacuum fluorescence display (VFD) or as a matrix composed of a multiplicity of light-emitting diodes (LEDs).
- the display 1 is provided with a display control 2 with which the individual picture elements of the display 1 can be controlled, the display 1 being divided into rows and columns in accordance with a television picture.
- a display control 2 with which the individual picture elements of the display 1 can be controlled, the display 1 being divided into rows and columns in accordance with a television picture.
- a liquid crystal display for example, a plurality of thin film transistors are arranged in the form of a matrix, which are made of amorphous silicon and can be individually controlled via a column and row drive line.
- a color image is produced by driving a red, a blue and a green pixel with the appropriate intensity with the aid of the thin film transistors, so that the colors of the red, blue and green pixels together result in the color of an image pixel.
- the display controller 2 is connected to an image controller 3 via a control line 23.
- a clock line 10 is led to a computing unit 4.
- a first and a second synchronous line 11, 12 are arranged between the image controller 3 and the computing unit 4, and a selection line 13 is also led from the computing unit 4 to the image controller 3.
- the image controller 3 is also connected via a third and a fourth synchronous line 14, 15 to a video signal source 7, from which a second image line 17 is led to the image controller 3.
- the image controller 3 is connected via a first image line 16 to an image generator 5, to which a first control line 18 is led from the computing unit 4.
- the image generator 5 is connected to an image memory 8 via a first data line 6.
- the computing unit 4 is connected to a setting device 9, which has control registers, for example.
- the image controller 3 is connected to the display control 2 via a second control line 32.
- the image controller 3 has a timer 26 which specifies a clock frequency for a sample / hold element 27 with which the image signals of the first and the second image lines 16, 17 are sampled.
- the RGBI signal of the first image line 16 is fed from the sampling / holding element 27 to a selection circuit 28.
- the RGB2 signal of the second image line 17 is also fed to the selection circuit 28 via a second scanning line 30.
- the selection line 13 of the computing unit 4 is connected to the selection circuit 28.
- the output of the selection circuit 28 is led to the control line 23.
- the control unit 4 is also connected to a second control unit 29 which is connected to the image memory 8 and to a data memory 28 via data lines.
- the image controller 3 processes image signals which are supplied, for example, as red, blue and green signals to a television standard (PAL, NTSC).
- the supplied image signals are synchronized with respect to the image controller 3.
- a first synchronization signal VSY1 is exchanged between the arithmetic unit 4 and the image controller 3 via the first synchronizing line 11 and carries out a synchronization of the image page change. This ensures that the image controller 3 and the computing unit 4 simultaneously represent or provide a new image page.
- a second synchronization signal HSY1 is exchanged between the arithmetic unit 4 and the image controller 3 via the second synchronization line 12 and is used to synchronize the line change within an image. In this way it is ensured that the image controller 3 and the computing unit 4 jump synchronously from one image line to the next image line.
- the same synchronization is carried out between the image controller 3 and the video signal source 7 by exchanging a third synchronization signal VSY2 via the third synchronization line 14 and a fourth synchronization signal HSY2 via the fourth synchronization line 15.
- the third synchronization signal VSY2 ensures that the image controller 3 and the video signal source 7 synchronously carry out an image page change.
- the fourth synchronization signal HSY2 ensures that the image controller 3 and the video signal source 7 synchronously perform a line change within an image.
- both the first arithmetic unit 4 and the video signal source 7 are synchronized with the image controller 3 in accordance with a television standard, such as PAL or NTSC, with either the image controller 3 or the arithmetic unit 4 or the video source 7 being the synchronization clock, that is to say that Specify first, second, third and fourth synchronization signals VSY1, HSY1, VSY2, HSY2.
- the control unit 4 controls the image generator 5 via the control line 18 such that the image generator 5, depending on the first synchronization signal VSY1, the second synchronization signal HSY1 and depending on the system clock of the image controller 3, sends an image signal via the first image line 16 to the sample / hold element 27 of the image controller 3 supplies.
- the first image line 16 has a line for the color red, a line for the color blue and a line for the color green for the first image signal RGB1, the color signals red, blue and green via the image controller 3 and the control unit 2 into one corresponding color of a corresponding image pixel of the display 1 are implemented.
- the image generator 5 reads information for the color signals red, blue, green from the image memory 8 in accordance with the timing specified by the control unit 4 and forwards the color signals to the sample / hold element 27 in accordance with the timing specified by the control unit 4.
- the control unit 4 controls the second control unit 29, which according to the time specified by the control unit 4 clock image data from the data memory 28 in the image memory 8 transfers.
- the video signal source 7 supplies the sample / hold element 27 with a second image signal RGB2, which comprises a color signal red, a color signal blue and a color signal green.
- the second image line 17 has three lines for the color red, blue and green.
- the first image signal RGB1 and the second image signal RGB2 * are sampled by the sample / hold element 27 and passed via a first image signal line 31 and a second image signal line 30 to a selection circuit 28 which, depending on the selection signal A supplied via the selection line 13, either forwards the first image signal RGB1 or the second image signal RGB2 to the display controller 2.
- the image controller 3 specifies the change from one image pixel to the next image pixel, the change from one image line to the next image line and the change from one image page to the next image page via the second control line 32 to the display controller 2.
- the display control 2 addresses the corresponding image pixel with the image signal (RGB1 or RGB2) supplied by the image controller 3.
- the first synchronization signal VSY1 and the third synchronization signal VSY2 are the same and are designated as vertical synchronization signal VSY and that the second synchronization signal HSY1 and the fourth synchronization signal HSY2 are the same and as horizontal synchronization onssignal HSY are designated.
- the vertical and the horizontal synchronization signal are specified by the image generator 3.
- FIG. 2a shows the vertical synchronization signal VSY, which specifies a change of image page when changing from a high state to a low state.
- FIG. 2b shows a horizontal synchronization signal HSY, which specifies a line change when changing from a high state to a low state.
- the image controller 3, the image generator 5 and the video signal source 7 are synchronized with the horizontal and vertical synchronization signal, so that at the time T1 the display control 2 begins with the display of a new image on the display 1, the image generator 5 the first image signal RGB1 new image and the video signal source 7 supplies the second image signal RGB2 of a new image to the image controller 3.
- the horizontal synchronization signal HSY indicates the start of a new line by changing from a high state to a low state.
- the image generator 5 and the video signal source 7 therefore supply the image signal RGB1, RGB2 of the first pixel of a new image line to the image controller 3 at the time T1.
- the line counter ZZ changes at the point in time T1 at which a new image is started from the count x which is the
- FIG. 2d shows, depending on the time axis, a pixel counter PZ, which indicates which pixel is shown on the display 1 depending on the time.
- the pixel counter PZ jumps from a value y, which corresponds to the number of pixels of the last line, to a value 0 at the time T1, since a new line and thus a new pixel are driven at the time T1.
- the line counter ZZ and the pixel counter PZ are integrated in the control unit 4.
- the control signal RGBA with which the corresponding image pixel is controlled by the image controller 3, is shown in FIG. 2e in synchronism with the pixel counter PZ.
- the control signal RGBA is constant, so that a step function results for the control signal RGBA.
- FIG. 2f shows the system clock CL of the image controller 3, which has a constant frequency and represents a square-wave signal.
- the time period between a rising and a falling edge of the system clock CL preferably specifies the time period of an image pixel, which is represented by the pixel counter PZ.
- a rising or a falling edge of the system clock CL specifies the start of a new pixel, which is symbolically represented by arrows which are led from the edges of the system clock CL to the pixel counter PZ.
- an arrow is led from the system clock CL to the pixel counter PZ, which specifies the change from image pixel 0 to image pixel 1.
- system clock CL is specified by the timer 26 in the image controller 3.
- the system clock CL thus defines the time behavior of the image pixels within an image line by the display controller 2.
- the system clock CL also specifies the sampling clock with which the first and the second image signals RGB1, RGB2 are sampled by the sample / hold element 27. In this exemplary embodiment, the sampling takes place in each case on a rising or a falling edge of the system clock CL. This is shown in FIGS. 2f and 2g in the form of arrows which are aligned with the first image signal RGB1.
- the control unit 4 controls the output of the image generator 5 as a function of the system clock CL in such a way that a new, first image signal RGB1 with a predeterminable first phase relationship ⁇ l (time shift) with respect to the system clock CL is given to the sample / hold element 27.
- FIGS. 2g, 2h and 2i show an example of a first image signal RGBl, the color signal red R being shown in FIG. 2g, the color signal blue B in FIG. 2h and the color signal green G in FIG. 2i.
- the color signals R, G, B are kept in sync with each other for a predetermined period of time TF and then adapted by the image generator 5 to a new color value which is read out from the image memory 8 for the corresponding image pixel and which is also again for a predetermined one Time TF is kept constant. This results in a step characteristic for the color signals R, B, G.
- the color signals are preferably synchronized with one another, although a temporal shift of the change in the individual color signals red, blue, green to one another is also possible, although the scanning must then also be adapted accordingly for the color signals.
- the times at which the color signals red, blue and green of the first image signal RGB1 are sampled are in these Sem exemplary embodiment determined by rising or falling edges of the system clock CL and represented in the form of arrows that lead to the color signal red of the first image signal of Figure 2g.
- the phase relationship (time shift) selected in this exemplary embodiment between the system clock CL and the first image signal RGBl consists in a predeterminable first phase shift ⁇ l between the edge change of the system clock and the change of the first image signal RGBl output by the image generator 5, the image generator 5 changing the carries out the first image signal for one image pixel to the first image signal for the following image pixel with a predeterminable phase shift (time shift) to the edges of the system clock, preferably with a predeterminable first phase shift ⁇ l (time shift) at the sampling times of the sampling / holding element 27.
- the initial point in time TA, at which the first image signal RGBl is changed, is a first predeterminable phase shift ⁇ l (time period) shifted with respect to the edge change of the system clock CL. This applies to both the rising and the falling edge of the system clock CL. Since the system clock specifies the sampling clock in this exemplary embodiment, this phase shift (time shift) also applies to one another the sampling clock with which the sample and hold 27 samples the first image signal.
- the sampling takes place in each case on a rising or a falling edge of the system clock CL, as shown by the arrows in FIGS. 2f, 2g, which are led from the system clock CL to the first image signal RGB1 .
- the sample / hold element 27 samples the color signal values red, blue and green of the first image signal RGB1.
- the scanned value is shown on the display 1 for the period from the time T1 to the time T2 by the image controller 3 and the display controller 2.
- the displayed image value of the display 1 is shown in FIG. 2e divided into image pixels.
- FIGS. 2k, 21 and 2m show the color signal red R, the color signal blue B, and the color signal green G of the second image signal.
- the color signals R, G, B of the second image signal are synchronized with one another in time in accordance with the color signals of the first image signal and are held at a constant value for a predetermined period of time, so that a step function results for the color signals.
- the sampling times at which the sample / hold element 27 samples the second image signal are also shown in the form of arrows above the color signal red R, FIG. 2k.
- the selection signal A is shown in FIG. 2j and has the value 1 up to the changeover time TU and the value 0 after the changeover time TU, so that the first image signal RGB1 on the display 1 before the changeover time TU and the second image signal after the changeover time TU RGB2 is shown on display 1.
- the switching time TU is selected by the control unit 4 such that the switching time TU is a predeterminable second phase shift ⁇ 2 (second time period) compared to an ascending or a descending Edge of the system clock CL, in particular is shifted with respect to the sampling clock.
- FIG. 2e shows the control signal RGBA with which the control unit 2 controls the display 1.
- the numbers 1 or 2 symbolically represent the first or the second image signal RGB1, RGB2 in FIG. 2e.
- the numbers 1 or 2 indicate which image signal the switching unit 28 forwards to the control unit 2.
- the first image signal RGB1 and after the changeover time TU the second image signal RGB2 is reproduced by the control unit 2 on the display 1.
- the first image signal RGB1 is thus represented in the image pixels of the pixel counter PZ, which are provided with the numbers 1 to 7, and the second image signal RGB2 is shown in the image pixels, which are identified with the numbers 8 and 9 of the pixel counter PZ.
- the vertical synchronization signal VSY has a frequency of 50 to 60 Hz
- the horizontal synchronization signal HSY has a frequency range of 14 to 18 kHz
- the sampling frequency f of the control unit 4 with which the control unit 4 samples the system clock CL of the image controller 3, lies in a range between 4 and 40 MHz.
- the control unit 4 samples the clock cycle CL at a frequency f which is greater than the frequency of the clock cycle CL and preferably not equal to a multiple of the frequency of the clock cycle CL.
- the frequency of the clock cycle CL is 3.2 MHz
- the sampling frequency f is 40 MHz.
- predeterminable first phase shift ⁇ l between the time clock CL and the switching times of the first image signal RGBl can thus be a multiple of the reciprocal value of the
- Sampling frequency f can be set: where the Sampling frequency f of the control unit 4 is preferably not the same is a multiple of the frequency of the clock CL. If the sampling frequency f is not equal to a multiple of the frequency of the clock CL, the sampling frequency can be selected to be almost the same, but greater than the frequency of the clock CL, and nevertheless the first phase shift ⁇ l (time shift) is well coordinated via the control unit 4.
- the first phase shift ⁇ l is preferably kept constant by the control unit 4 within one image line. A very good picture quality is achieved when the first
- Phase shift ⁇ l (first time shift) is kept constant within an image. It is an advantageous further development if, when sampling a first image signal, the first image signal provided for the corresponding image pixel by the image memory 8 is always sampled in good time so that the correct image pixel is always controlled with the correct image signal. In this way, edge shifts and shadow effects are avoided.
- the control unit 4 is connected to the setting device 9, which has, for example, control registers, with which the first or the second phase shift ⁇ l, ⁇ 2 (first or second time shift) can be set by a user, taking into account the image quality.
- the setting device 9 has, for example, control registers, with which the first or the second phase shift ⁇ l, ⁇ 2 (first or second time shift) can be set by a user, taking into account the image quality.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Multimedia (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
- Synchronizing For Television (AREA)
- Transforming Electric Information Into Light Information (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19625898 | 1996-06-27 | ||
DE19625898A DE19625898A1 (de) | 1996-06-27 | 1996-06-27 | Anzeigesystem und Verfahren zur Versorgung eines Anzeigesystems mit einem Bildsignal |
PCT/DE1997/001163 WO1998000830A1 (de) | 1996-06-27 | 1997-06-09 | Anzeigesystem und verfahren zur versorgung eines anzeigesystems mit einem bildsignal |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0907946A1 true EP0907946A1 (de) | 1999-04-14 |
EP0907946B1 EP0907946B1 (de) | 2001-04-11 |
Family
ID=7798263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97926993A Expired - Lifetime EP0907946B1 (de) | 1996-06-27 | 1997-06-09 | Anzeigesystem und verfahren zur versorgung eines anzeigesystems mit einem bildsignal |
Country Status (5)
Country | Link |
---|---|
US (1) | US6380989B1 (de) |
EP (1) | EP0907946B1 (de) |
JP (1) | JP3902665B2 (de) |
DE (2) | DE19625898A1 (de) |
WO (1) | WO1998000830A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19807257C2 (de) * | 1998-02-20 | 2000-05-11 | Siemens Ag | Anzeigevorrichtung und Verfahren zur Darstellung von analogen Bildsignalen |
TWI292893B (en) * | 2005-10-05 | 2008-01-21 | Myson Century Inc | Method for prevention of distorted sub-picture display on flat panel display |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0489757B1 (de) * | 1989-08-31 | 1994-10-19 | Siemens Aktiengesellschaft | Als IC ausgeführte taktsteuerbare Ansteuereinheit einer Anzeigematrix |
JP3218567B2 (ja) * | 1990-09-28 | 2001-10-15 | クロームアロイ・ガス・タービン・コーポレイション | 高強力ニッケル基超合金類の溶接 |
JP2673386B2 (ja) * | 1990-09-29 | 1997-11-05 | シャープ株式会社 | 映像表示装置 |
US5309168A (en) * | 1990-10-31 | 1994-05-03 | Yamaha Corporation | Panel display control device |
US5635984A (en) * | 1991-12-11 | 1997-06-03 | Samsung Electronics Co., Ltd. | Multi-picture control circuit and method for electronic still camera |
US5473382A (en) * | 1992-11-04 | 1995-12-05 | Hitachi, Ltd. | Video signal converting apparatus for converting an interlace video signal into a non-interlace video signal for reduction |
GB2282307A (en) * | 1993-09-24 | 1995-03-29 | Ibm | Disabling display unit when image is unchanged |
JPH07107408A (ja) * | 1993-10-05 | 1995-04-21 | Mitsubishi Electric Corp | 画面表示装置内蔵のシングルチップマイクロコンピュータ |
EP0669761A3 (de) * | 1994-02-23 | 1999-03-03 | Hitachi, Ltd. | Empfangseinrichtung für ein Fernsehsignal, welche eine Einrichtung zum Auffinden und zur Wiedergabe von Informationen enthält |
US5978041A (en) * | 1994-10-24 | 1999-11-02 | Hitachi, Ltd. | Image display system |
JPH08214223A (ja) * | 1995-02-03 | 1996-08-20 | Sony Corp | テレビジョン装置 |
JPH08256297A (ja) * | 1995-03-17 | 1996-10-01 | Toshiba Corp | 2画面テレビ受像機 |
US5969767A (en) * | 1995-09-08 | 1999-10-19 | Matsushita Electric Industrial Co., Ltd. | Multipicture video signal display apparatus with modified picture indication |
JPH09116821A (ja) * | 1995-10-18 | 1997-05-02 | Toshiba Corp | テレビジョン受像機 |
US5990975A (en) * | 1996-11-22 | 1999-11-23 | Acer Peripherals, Inc. | Dual screen displaying device |
US5946051A (en) * | 1997-06-02 | 1999-08-31 | Telecruz Technology, Inc. | Method and apparatus for enabling a user to access data network applications from a television system |
US6052119A (en) * | 1997-10-16 | 2000-04-18 | Acer Peripherals. Inc. | Image displaying device with time control function |
-
1996
- 1996-06-27 DE DE19625898A patent/DE19625898A1/de not_active Withdrawn
-
1997
- 1997-06-09 DE DE59703359T patent/DE59703359D1/de not_active Expired - Fee Related
- 1997-06-09 JP JP50371798A patent/JP3902665B2/ja not_active Expired - Fee Related
- 1997-06-09 EP EP97926993A patent/EP0907946B1/de not_active Expired - Lifetime
- 1997-06-09 WO PCT/DE1997/001163 patent/WO1998000830A1/de active IP Right Grant
-
1998
- 1998-12-28 US US09/221,788 patent/US6380989B1/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9800830A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP0907946B1 (de) | 2001-04-11 |
DE19625898A1 (de) | 1998-01-08 |
WO1998000830A1 (de) | 1998-01-08 |
JP3902665B2 (ja) | 2007-04-11 |
JP2000500885A (ja) | 2000-01-25 |
US6380989B1 (en) | 2002-04-30 |
DE59703359D1 (de) | 2001-05-17 |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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