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公开(公告)号：JPH10247463A
公开(公告)日：1998-09-14
申请号：JP3258698
申请日：1998-02-16
Applicant: IBM
Inventor： BEETESON JOHN , KNOX ANDREW RAMSAY , PIETRZAK CHRISTOPHER CARLO
Abstract: PROBLEM TO BE SOLVED: To provide a display electron supply source having self-stability. SOLUTION: The position of a virtual remote cathode is related to a spatial charge cloud conserved by the shape of a fixed insulating plate 902. This plate 902 can be shaped to accurate size, and thereby the distance from a cathode 510 to a control grid 502 can be accurately controlled to exert no influence of the mechanical, electrical and physical change of a structure. The fixed insulating plate 902 is arranged on the face opposite from the cathode 510 of the control grid 502.
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公开(公告)号：JPH10105148A
公开(公告)日：1998-04-24
申请号：JP21484697
申请日：1997-08-08
Applicant: IBM
Inventor： KERIGAN SHAUN , KNOX RICHARD IAN , PIETRZAK CHRISTOPHER CARLO
Abstract: PROBLEM TO BE SOLVED: To drive a digital display so that a noise (erroneous color display) being sensible for a user is reduced by providing a lookup table outputting a color signal having resolution matching with resolution of a digital display. SOLUTION: A lookup table 22 receives a color signal of writing operation to a color palette chip 2 as an input, and outputs a color signal of resolution matching with resolution of a digital display 21. Therefore, when a user wishes to add a color to a color palette chip 2, color selection (appear in lines 28-30) of a user is interrupted by the lookup table 22 and the color is converted to a different color, outputted to the color palette chip 2 through lines 25-27, and written there. The color palette chip 2 sends analog signals R, G, B to the digital display 21 through lines 5-7.
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公开(公告)号：DE69805678T2
公开(公告)日：2003-01-23
申请号：DE69805678
申请日：1998-01-29
Applicant: IBM
Inventor： BEETESON JOHN , KNOX ANDREW RAMSAY , PIETRZAK CHRISTOPHER CARLO
Abstract: A virtual remote cathode has the position of a space charge cloud associated with it fixed by the geometry of a fixed insulating plate (902). The plate (902) can be made to accurate dimensions and hence the virtual remote cathode to control grid (502) distance can be accurately controlled and will not change as a result of any mechanical, electrical or physical changes in the construction. The fixed insulating plate (902) is located on a surface of the control grid (502) facing the cathode (510).
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公开(公告)号：GB2309872A
公开(公告)日：1997-08-06
申请号：GB9602293
申请日：1996-02-05
Applicant: IBM
Inventor： KNOX ANDREW RAMSAY , PIETRZAK CHRISTOPHER CARLO
Abstract: A display system comprises a digital video source coupled to a digital display device via an digital interface having a timing channel for carrying a pixel clock signal from the video source to the display device and a digital video channel for carrying a digital video bit stream from the video source to the display device. The video source comprises a pixel clock generator for generating the pixel clock signal, palette logic for outputting a pixel word on each pulse of the pixel clock signal, shift clock logic for multiplying the pixel clock signal by the number of bits in the pixel word to produce a shift clock signal, and serialiser logic for serially outputting the pixel word in the serial bit stream at the shift clock signal rate. The display device comprises a display screen for producing a pixel of an image in response to the pixel word; shift clock generator logic for multiplying the pixel clock signal by the number of bits in the pixel word, and deserialiser logic for receiving the input video bit stream at the shift clock signal rate to re-generate the pixel word from the video bit stream.
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公开(公告)号：DE69820599T2
公开(公告)日：2004-10-07
申请号：DE69820599
申请日：1998-06-11
Applicant: IBM
Inventor： BEETESON JOHN STUART , KNOX ANDREW RAMSAY , PIETRZAK CHRISTOPHER CARLO
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Patent Agency Ranking
公开(公告)号：DE69820599D1
公开(公告)日：2004-01-29
申请号：DE69820599
申请日：1998-06-11
Applicant: IBM
Inventor： BEETESON JOHN STUART , KNOX ANDREW RAMSAY , PIETRZAK CHRISTOPHER CARLO
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公开(公告)号：GB2317987A
公开(公告)日：1998-04-08
申请号：GB9620843
申请日：1996-10-04
Applicant: IBM
Inventor： BEETESON JOHN STUART , KNOX ANDREW RAMSAY , PIETRZAK CHRISTOPHER CARLO
IPC: H01J17/49 , H01J29/02 , H01J29/04 , H01J29/48 , H01J29/68 , H01J29/86 , H01J29/87 , H01J31/12 , H01J3/02 , H01J29/10
Abstract: A display device comprises a screen 90. A back plate 10 is sealed to the screen to form an evacuated chamber. An area cathode 20 is disposed between the back plate and the screen. A permanent magnet 60 is disposed between the cathode and the screen. A two dimensional array of rows and columns of channels 70 extends between opposite poles of the magnet for receiving electrons from the cathode. An anode phosphor layer 80 is disposed between screen and the magnet for receiving electrons from the channels. Grid electrodes 41,42 between the area cathode and the magnet control flow of electrons from the cathode into the channels. Anodes 50 between the magnet and the anode phosphor layer control flow of electrons from the channels towards the screen. In one such arrangement, the screen comprises a layer of a plastic material 11, e.g. acrylic, and possibly a thin layer of glass 12. In another such arrangement a plurality of spacers 14,15 are disposed between the screen and the magnet. Each spacer has a tapering elongate body and may be of circular or star-shaped cross-section. In another such arrangement, a plurality of spacers are disposed between the magnet and cathode, located in recesses formed between the grid electrodes. In yet another such arrangement, the cathode comprises a back-plate 10 and a silica glass substrate 22 peripherally sealed to the back-plate to produce a chamber. A gas is contained in the chamber. A layer of photo-sensitive material 21 is disposed on the surface of the substrate external to the chamber. A cathode phosphor layer 23 is disposed between the back plate and the substrate. A pair of electrodes 25 energises the gas to generate a plasma 24 for exciting the phosphor to generate light energy to produce electron emissions from the photo-cathode.
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公开(公告)号：GB2317310A
公开(公告)日：1998-03-18
申请号：GB9619265
申请日：1996-09-14
Applicant: IBM
Inventor： KNOX RICHARD IAN , KERIGAN SHAUN , PIETRZAK CHRISTOPHER CARLO
Abstract: An analog interface apparatus for driving a digital display unit, said apparatus comprising: a colour palette means for storing colour signals for driving said digital display unit; and a look up table means for storing colour signals for driving said digital display unit and for supplying said colour signals to said colour palette means, said look up table including means for interrupting write operations to said colour palette means by receiving as inputs colour signals of said write operations and providing as outputs colour signals having a resolution matching that of said digital display unit.
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公开(公告)号：DE69722476T2
公开(公告)日：2004-04-15
申请号：DE69722476
申请日：1997-01-17
Applicant: IBM
Inventor： PIETRZAK CHRISTOPHER CARLO , KNOX ANDREW
Abstract: A display system comprises a digital video source coupled to a digital display device via an digital interface having a timing channel for carrying a pixel clock signal from the video source to the display device and a digital video channel for carrying a digital video bit stream from the video source to the display device. The video source comprises a pixel clock generator for generating the pixel clock signal, palette logic for outputting a pixel word on each pulse of the pixel clock signal, shift clock logic for multiplying the pixel clock signal by the number of bits in the pixel word to produce a shift clock signal, and serialiser logic for serially outputting the pixel word in the serial bit stream at the shift clock signal rate. The display device comprises a display screen for producing a pixel of an image in response to the pixel word; shift clock generator logic for multiplying the pixel clock signal by the number of bits in the pixel word, and deserialiser logic for receiving the input video bit stream at the shift clock signal rate to re-generate the pixel word from the video bit stream.
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公开(公告)号：DE69722476D1
公开(公告)日：2003-07-10
申请号：DE69722476
申请日：1997-01-17
Applicant: IBM
Inventor： PIETRZAK CHRISTOPHER CARLO , KNOX ANDREW
Abstract: A display system comprises a digital video source coupled to a digital display device via an digital interface having a timing channel for carrying a pixel clock signal from the video source to the display device and a digital video channel for carrying a digital video bit stream from the video source to the display device. The video source comprises a pixel clock generator for generating the pixel clock signal, palette logic for outputting a pixel word on each pulse of the pixel clock signal, shift clock logic for multiplying the pixel clock signal by the number of bits in the pixel word to produce a shift clock signal, and serialiser logic for serially outputting the pixel word in the serial bit stream at the shift clock signal rate. The display device comprises a display screen for producing a pixel of an image in response to the pixel word; shift clock generator logic for multiplying the pixel clock signal by the number of bits in the pixel word, and deserialiser logic for receiving the input video bit stream at the shift clock signal rate to re-generate the pixel word from the video bit stream.
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