EP0907946B1 - Anzeigesystem und verfahren zur versorgung eines anzeigesystems mit einem bildsignal - Google Patents
Anzeigesystem und verfahren zur versorgung eines anzeigesystems mit einem bildsignal Download PDFInfo
- Publication number
- EP0907946B1 EP0907946B1 EP97926993A EP97926993A EP0907946B1 EP 0907946 B1 EP0907946 B1 EP 0907946B1 EP 97926993 A EP97926993 A EP 97926993A EP 97926993 A EP97926993 A EP 97926993A EP 0907946 B1 EP0907946 B1 EP 0907946B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- picture
- display
- rgb1
- signal
- clock pulse
- 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.)
- Expired - Lifetime
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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 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. NTSC or PAL standard to display images, for example liquid crystal displays (LCD) can be used.
- a Video signal or a television signal such as e.g. NTSC or PAL standard to display images, for example liquid crystal displays (LCD) can be used.
- LCD liquid crystal displays
- the object of the invention is to improve the image quality improve and in particular shadow effects and image blur to reduce.
- the object of the invention is achieved by the features of the claim 1 and solved by the features of claim 6.
- a particularly good image quality is achieved when the supplied Image signal depending on the system frequency of the display system is synchronized.
- FIG. 1 shows a display system in the form of logical blocks, either from individual building blocks or as an integrated one Circuit and / or implemented in the form of software can be.
- Figure 1 shows a display 1, for example as a liquid crystal display, as a vacuum fluorescence display (VFD) or as a matrix of a multitude of light emitting diodes (LED) is formed.
- the display 1 is with a display control 2 provided with which the individual picture elements of Display 1 can be controlled, the display 1 in lines and Columns is divided according to a television picture.
- a liquid crystal display are for example in the form a plurality of thin-film transistors arranged in a matrix, which are made of amorphous silicon and have a column and line control line can be controlled individually.
- On Color image is generated by using the thin film transistors a red, a blue and a green pixel is controlled in the appropriate intensity, so that the Colors of the red, blue and green pixels together result in the color of an image pixel.
- the display control 2 is connected via a control line 23 connected to an image controller 3.
- a clock line 10 is led to a computing unit 4.
- the image controller 3 is still a third and one fourth synchronous line 14, 15 with a video signal source 7 connected, from which a second image line 17 to the image controller 3 is performed.
- the image controller 3 is on via a first image line 16 an image generator 5 connected to the from the computing unit 4 a first control line 18 is guided.
- the image generator 5 with an image memory 8 via a first data line 6 in connection.
- the computing unit 4 is connected to an adjusting device 9, which has control registers, for example.
- the Image controller 3 is connected via a second control line 32 the display control 2 connected.
- the image controller 3 has a timer 26, the one Clock frequency for a sample / hold member 27 specifies the the image signals of the first and second image lines 16, 17 be scanned.
- the RGB1 signal of the first image line 16 is from the sample / hold member 27 to a selection circuit 28 out.
- the RGB2 signal of the second image line 17 is via a second scanning line 30 also to the selection circuit 28 out.
- the selection line 13 of the computing unit 4 is connected to the selection circuit 28.
- the exit of the Selection circuit 28 is led to the control line 23.
- the control unit 4 also has a second control unit 29 in connection, which via data lines with the Image memory 8 and is connected to a data memory 28.
- the image controller 3 processes image signals, for example as red, blue and green signals of a television standard (PAL, NTSC) are fed.
- the supplied image signals are synchronized with respect to the image controller 3.
- a first is via the first synchronous line 11 Synchronization signal VSY1 between the computing unit 4 and the image controller 3 exchanged, the synchronization the page change.
- the second synchronization line 12 shows a second synchronization signal HSY1 between the computing unit 4 and the image controller 3 exchanged for Synchronization of the line change within an image serves. This ensures that the image controller 3 and the computing unit 4 synchronously from one image line jump to the next image line.
- a third synchronization signal VSY2 and a fourth via the fourth synchronization line 15 Synchronous signal HSY2 is exchanged.
- the third synchronization signal VSY2 ensures that the image controller 3 and the video signal source 7 synchronously an image page change carry out.
- the fourth synchronization signal HSY2 provides for the image controller 3 and the video signal source 7 perform a line change synchronously within a picture.
- both the first computing unit 4 and also the video signal source 7 with the image controller 3 accordingly a television standard, such as PAL or NTSC, synchronized, either the image controller 3 or the Computing unit 4 or the video source 7 the synchronization clock, that is, the first, the second, the third and the fourth synchronization signal VSY1, HSY1, VSY2, HSY2.
- the control unit 4 controls the control line 18 Image generator 5 such that the image generator 5 is dependent from the first synchronization signal VSY1, the second Synchronization signal HSY1 and depending on the system clock of the image controller 3 an image signal via the first Image line 16 the sample / hold member 27 of the image controller 3 feeds.
- the first image line 16 points for the first image signal RGB1 a line for the color red, a line for the color blue and a line for the color green, where the color signals red, blue and green via the image controller 3 and the control unit 2 in a corresponding color corresponding image pixels of the display 1 are implemented.
- the image generator 5 reads accordingly the timing information specified by the control unit 4 for the color signals red, blue, green from the image memory 8 and outputs the color signals according to that from the control unit 4 predetermined timing to the sample / hold member 27th further.
- the control unit 4 controls the second control unit 29 which in accordance with the timing specified by the control unit 4 Image data from data memory 28 into image memory 8 transmits.
- the video signal source 7 performs according to the synchronization by the third and fourth synchronization signal VSY2, HSY2 the sample / hold member 27 a second image signal RGB2 too, which is a color signal red, a color signal blue and a Color signal includes green.
- the second image line 17 points accordingly the first picture line 16 three lines for the Color red, blue and green.
- the image controller 3 outputs the second control line 32 to the display controller 2 the change from an image pixel to 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 forward.
- the display control 2 addresses accordingly the control by the image controller 3 the corresponding Image pixel with that supplied by the image controller 3 Image signal (RGB1 or RGB2).
- the mode of operation of FIG device and method according to the invention explained in more detail, it being assumed that the first synchronization signal VSY1 and the third synchronization signal VSY2 are the same and as a vertical synchronization signal VSY are designated and that the second synchronization signal HSY1 and the fourth synchronization signal HSY2 are the same and as a horizontal synchronization signal HSY are designated.
- the vertical and the horizontal Synchronization signal are in this embodiment predefined by the image generator 3.
- Figure 2a shows the vertical synchronization signal VSY, the when changing from a high state to a low state specifies a picture page change.
- Figure 2b shows a horizontal Synchronization signal HSY, which when changing from a high state to a low state a line break pretends.
- the image controller 3 On the horizontal and vertical synchronization signal are the image controller 3, the image generator 5 and the video signal source 7 synchronized so that the display control at time T1 2 with the presentation of a new image the display 1 begins, the image generator 5 the first image signal RGB1 of a new picture and the video signal source 7 that second image signal RGB2 of a new image to the image controller 3 feeds.
- the line counter ZZ changes at time T1, at which a new picture is started from the count x, the Represents the number of lines of the last image, to the value 1 and indicates the first line of the new image.
- the line counter ZZ jumps to the value 2.
- Figure 2d shows a pixel counter depending on the time axis PZ, which indicates which pixel depending on the time is shown on display 1.
- the pixel counter PZ jumps from a value y, the number, at time T1 the pixel corresponds to the last line, to a value of 0 because a new line at time T1 and thus a new pixel is controlled.
- the line counter ZZ and the pixel counter PZ are integrated in the control unit 4.
- the drive signal is synchronous with the pixel counter PZ in FIG. 2e RGBA shown with the corresponding Image pixel is controlled by the image controller 3.
- the control signal RGBA is constant, so that there is a step function for the control signal RGBA results.
- the system clock CL of the image controller 3 is shown in FIG. 2f. which has a constant frequency and a square wave signal represents.
- the length of time between a rising and a falling edge of the system clock CL preferably gives the time duration of an image pixel by the pixel counter PZ is shown.
- a rising or a falling The edge of the system clock CL indicates the start of a new one Pixels, which is symbolized by arrows that led from the edges of the system clock CL to the pixel counter PZ are.
- time T2 there is an arrow from the system clock CL led to the pixel counter PZ, which changes the image pixel 0 for image pixel 1.
- the System clock CL is specified by the timer 26 in the image controller 3.
- the system clock CL thus determines the time behavior of the image pixels within a picture line by the display control 2 firmly.
- the system clock CL also specifies the sampling clock with which the first and second image signals RGB1, RGB2 from the sample / hold member 27 can be scanned. In this embodiment the sampling takes place with an increasing or a falling edge of the system clock CL. This is in the Figures 2f and 2g shown in the form of arrows pointing to the first image signal RGB1 are aligned.
- the control unit 4 controls depending on the system clock CL the output of the image generator 5 such that a new, first Image signal RGB1 with a predeterminable first phase relationship ⁇ 1 (time shift) compared to the system clock CL the sample / hold member 27 is given.
- Figures 2g, 2h and 2i show an example of a first Image signal RGB1
- Figure 2h shows the color signal blue B
- in Figure 2i the color signal Green G is shown.
- the color signals R, G, B are synchronized to each other for a predetermined period of time TF kept constant and then from the image generator 5 to one adjusted new color value from the image memory 8 for the corresponding image pixel is read out, and so too again kept constant for a predetermined period of time TF becomes.
- This results in the color signals R, B, G each have a step characteristic.
- the color signals are preferred synchronized with each other, but also a temporal Postponing the change in the individual color signals Red, blue, green to each other is possible, but then also the sampling adapted accordingly for the color signals have to be.
- the phase relationship chosen in this embodiment (Time difference) between the system clock CL and the first Image signal RGB1 consists of a predeterminable first phase shift ⁇ 1 between the edge change of the system clock and the change of the first output from the image generator 5 Image signal RGB1, the image generator 5 making a change the first image signal for an image pixel to the first image signal for the following image pixel with a specifiable phase shift (Time shift) to the edges of the system clock, preferably with a predeterminable first phase shift ⁇ 1 (time shift) at the sampling times of the Sample / hold member 27 performs.
- the starting time TA at which the first image signal RGB1 is changed is a first definable phase shift ⁇ 1 (duration) compared to the edge change of the system clock CL shifted. This applies to both the rising as well the falling edge of the system clock CL. Because in this embodiment the system clock specifies the sampling clock applies this phase shift (time shift) also compared the sampling clock with which the sample and hold 27 the first Scans image signal.
- Figures 2k, 2l 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 in accordance with the color signals of the first image signal temporally synchronized to each other and are for one predetermined time period is kept at a constant value, so that there is a step function for each of the color signals results.
- the sampling times at which the sample / hold member 27 samples the second image signal are above the color signal Red R, Figure 2k, also shown in the form of arrows.
- the selection signal A is shown in Figure 2j and has to at the changeover time TU the value 1 and after the changeover time TU has the value 0, so that before the switchover time TU the first image signal RGB1 on display 1 and after the changeover time TU the second image signal RGB2 on the display 1 is shown.
- the changeover time TU is from Control unit 4 selected such that the switchover time TU a predeterminable second phase shift ⁇ 2 (second time period) versus an ascending or a descending Edge of the system clock CL, especially with respect to the sampling clock is moved.
- FIG. 2e shows the control signal RGBA with which the control unit 2 controls the display 1.
- the numbers 1 or 2 is symbolically the first or that in FIG. 2e second image signal RGB1, RGB2 shown.
- the numbers 1 or 2 indicate which image signal the switching unit 28 to the Control unit 2 passes on.
- Up to the switchover time TU becomes the first image signal RGB1 and after the switching time Open the second image signal RGB2 from the control unit 2 the display 1 reproduced.
- 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, is in one Range between 4 and 40 MHz.
- the control unit 4 samples the clock CL with a frequency f that is greater than the frequency of the clock CL and preferably not equal to a multiple of the frequency of the clock CL.
- the frequency of the clock CL is 3.2 MHz and the sampling frequency f is 40 MHz.
- the first phase shift ⁇ 1 is preferably within an image line kept constant by the control unit 4.
- a very good picture quality is achieved when the first Phase shift ⁇ 1 (first time shift) within one Image is kept constant. It is beneficial Training if when sampling a first image signal always that for the corresponding image pixel from the image memory 8 provided first image signal is sampled in good time, so that always the right image pixel with the right image signal is controlled. In this way, edge shifts and avoided shadow effects.
- the control unit 4 is connected to the setting device 9, which, for example, has control registers with which either the first or the second phase shift ⁇ 1, ⁇ 2 (first or second time shift) from a user is adjustable taking into account the image quality.
- the setting device 9 which, for example, has control registers with which either the first or the second phase shift ⁇ 1, ⁇ 2 (first or second time shift) from a user is adjustable taking into account the image quality.
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- 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)
- Transforming Electric Information Into Light Information (AREA)
Description
Claims (10)
- Anzeigesystem, das aufweist:eine Anzeige (1),eine Anzeigesteuerung (2),einen Bildcontroller (3), der nach einem Systemtakt (CL) arbeitet, wobei der Systemtakt (CL) das Zeitverhalten der Bildpixel innerhalb einer Zeile definiert,eine Bildsignalquelle (4, 5), die mit dem Bildcontroller (3) verbunden ist und an die der Systemtakt (CL) geführt ist und die dem Bildcontroller (3) ein Bildsignal (RGB1) in Abhängigkeit vom Systemtakt (CL) zuführt, so daß der Bildcontroller (3) das Bildsignal über die Anzeigesteuerung (2) in Abhängigkeit vom Systemtakt (CL) auf der Anzeige (1) darstellt.
- Anzeigesystem nach Anspruch 1, dadurch gekennzeichnet, daß der Bildcontroller (3) das zugeführte Bildsignal (RGB1) mit einem Abtasttakt (27) abtastet, der vom Systemtakt abhängt, daß der Bildcontroller (3) entsprechend dem abgetasteten Bildsignal (RGB1) einen entsprechenden Bildpunkt auf der Anzeige (1) darstellt, und
daß die Bildsignalquelle (4, 5) das Bildsignal (RGB1) dem Bildcontroller (3) in bezug auf den Abtasttakt (27) mit einer vorgebbaren Phasenverschiebung (δϕ1) zuführt. - Anzeigesystem nach Anspruch 2, dadurch gekennzeichnet, daß die Phasenverschiebung (δϕ1) für mindestens eine Bildzeile der Anzeige (1) konstant ist.
- Anzeigesystem nach Anspruch 1, dadurch gekennzeichnet, daß der Bildcontroller (3) mit einer zweiten Bildsignalquelle (7) verbunden ist, die dem Bildcontroller (3) ein zweites Bildsignal (RGB2) zuführt, daß eine Steuereinheit (4) vorgesehen ist, an die der Systemtakt geführt ist, daß die Steuereinheit (4) dem Bildcontroller (3) ein Umschaltsignal (A) zuführt, das eine vorgebbare Phasenverschiebung (δϕ2) gegenüber dem Systemtakt aufweist, und das festlegt, welches Bildsignal (RGB1,RGB2) der Bildcontroller (3) auf der Anzeige (1) darstellt.
- Anzeigesystem nach Anspruch 4, dadurch gekennzeichnet, daß der Bildcontroller (3) das zugeführte Bildsignal (RGB1) mit einem Abtasttakt (27) abtastet, der vom Systemtakt abhängt, daß der Bildcontroller (3) entsprechend dem abgetasteten Bildsignal (RGB1) einen entsprechenden Bildpunkt auf der Anzeige (1) darstellt, daß die Bildsignalquelle (4, 5) das Bildsignal (RGB1) dem Bildcontroller (3) in bezug auf den Abtasttakt (27) mit einer vorgebbaren Phasenverschiebung (δϕ1) zuführt, und daß die Recheneinheit (4) den Systemtakt mit einer Abtastfrequenz abtastet, deren reziproker Wert ungleich einem Vielfachen der Zeitperiode des Systemtaktes ist, und daß die Recheneinheit (4) die Phasenverschiebung (δϕ1) als Vielfache des reziproken Wertes der Abtastfrequenz vorgibt.
- Verfahren zur Versorgung eines Anzeigesystem mit einem Bildsignal (RBG1), das vom Anzeigesystem in Abhängigkeit von einem Systemtakt (CL) auf einer Anzeige (1) dargestellt wird, wobei der Systemtakt (CL) das Zeitverhalten der Bildpixel innerhalb einer Zeile definiert, und wobei das Bildsignal (RBG1) dem Anzeigesystem von der Bildsignalquelle in Abhängigkeit vom Systemtakt (CL) zugeführt wird.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß das Bildsignal (RGB1) für mindestens ein Bildpixel vorgegeben wird, daß anschließend das Bildsignal (RGB1) für mindestens ein zweites Bildpixel vorgegeben wird, und daß der Wechsel des Bildsignals von einem Bildpixel zum nächsten Bildpixel in einer vorgebbaren Phasenbeziehung (δϕ1) zum Systemtakt vorgegeben wird.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß dem Anzeigesystem ein zweites Bildsignal (RGB2) und ein Auswahlsignal (A) zugeführt werden, daß in Abhängigkeit von dem Auswahlsignal (A) das erste oder das zweite Bildsignal (RGB1,RGB2) vom Anzeigesystem auf der Anzeige dargestellt wird, daß das Auswahlsignal (A) in einer vorgebbaren zweiten Phasenbeziehung (δϕ2) gegenüber dem Systemtakt geändert wird.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß das Bildsignal (RGB1) abgetastet wird, daß anschließend der abgetastete Wert dargestellt wird, und daß der Zeitpunkt der Abtastung (27) in Abhängigkeit vom Systemtakt vorgegeben wird.
- Verfahren nach Anspruch 9, dadurch gekennzeichnet, daß das Bildsignal (RGB1) für mindestens ein erstes Bildpixel als ein Wert vorgegeben wird, daß das Bildsignal (RGB1) anschließend für mindestens ein zweites Bildpixel als ein Wert vorgegeben wird, und daß das Bildsignal (RGB1) von dem Wert für das erste Bildpixel zu dem Wert für das zweite Bildpixel in einer vorgebbaren Phasenbeziehung (δϕ1) zum Zeitpunkt der Abtastung (27) geändert wird.
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 EP0907946A1 (de) | 1999-04-14 |
EP0907946B1 true 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 EP EP97926993A patent/EP0907946B1/de not_active Expired - Lifetime
- 1997-06-09 JP JP50371798A patent/JP3902665B2/ja not_active Expired - Fee Related
- 1997-06-09 WO PCT/DE1997/001163 patent/WO1998000830A1/de active IP Right Grant
- 1997-06-09 DE DE59703359T patent/DE59703359D1/de not_active Expired - Fee Related
-
1998
- 1998-12-28 US US09/221,788 patent/US6380989B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE19625898A1 (de) | 1998-01-08 |
WO1998000830A1 (de) | 1998-01-08 |
JP2000500885A (ja) | 2000-01-25 |
DE59703359D1 (de) | 2001-05-17 |
EP0907946A1 (de) | 1999-04-14 |
US6380989B1 (en) | 2002-04-30 |
JP3902665B2 (ja) | 2007-04-11 |
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