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公开(公告)号：GB2196212B
公开(公告)日：1990-08-29
申请号：GB8720940
申请日：1987-09-05
Applicant: IBM
Abstract: An all points addressable raster scan graphics display system is operable in two modes. In the first mode, data is extracted from a refresh store, serialised, modified, and applied to a display device at a first frequency. In the second mode, data is extracted from the refresh store, serialised and partially modified at said first frequency, but it is then further modified and passed to the display device at an even sub harmonic, for example half, of the first frequency. The further modification includes concatenation of successive groups of display data bits. Accordingly, with the raster scan device operating at a constant scan velocity, the first mode provides a high picture element definition but relatively low colour definition display, and the second mode provides a display with an even submultiple, for example half, the picture element definition but considerably greater colour definition.
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公开(公告)号：MX160734A
公开(公告)日：1990-04-19
申请号：MX880387
申请日：1987-10-13
Applicant: IBM
Inventor： MOREL JEANNE ELLEN , RACKLEY DARWIN PRESTON
Abstract: An all points addressable raster scan graphics display system is operable in two modes. In the first mode, data is extracted from a refresh store, serialised, modified, and applied to a display device at a first frequency. In the second mode, data is extracted from the refresh store, serialised and partially modified at said first frequency, but it is then further modified and passed to the display device at an even sub harmonic, for example half, of the first frequency. The further modification includes concatenation of successive groups of display data bits. Accordingly, with the raster scan device operating at a constant scan velocity, the first mode provides a high picture element definition but relatively low colour definition display, and the second mode provides a display with an even submultiple, for example half, the picture element definition but considerably greater colour definition.
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公开(公告)号：BE1001063A3
公开(公告)日：1989-06-27
申请号：BE8701162
申请日：1987-10-09
Applicant: IBM
Abstract: Système d'affichage graphique à balayage de trame dont tous les points peuvent etre adressés selon deux modes de fonctionnement; dans le premier mode, des données sont extraites d'une mémoire de révision (MO à M3), sérialisées, modifiées et appliquées à un dispositif d'affichage à une première fréquence; dans le second mode, les données sont extraites de la mémoire de révision, sérialisées et partiellement modifiées à ladite première fréquence et sont alors encore modifiées et transférées au dispositif d'affichage à une sous harmonique paire, par exemple la moitié, de la première fréquence.
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公开(公告)号：GB2162026B
公开(公告)日：1987-10-28
申请号：GB8513016
申请日：1985-05-23
Applicant: IBM
Inventor： RACKLEY DARWIN PRESTON , SAENZ JESUS ANDRES , YOSIM PAUL STEWART
IPC: G09G5/18 , G06F3/153 , G09G1/16 , G09G1/28 , G09G5/00 , G09G5/02 , G09G5/04 , G09G5/36 , H04N3/27
Abstract: A digital display system includes a monitor arranged to receive digital display data and synchronising signals to develop displays on a cathode ray tube. The monitor is switched between different line structure and/or colour definition modes in response to the polarity of one of the vertical or horizontal synchronising signals trains. A circuit receives this train to provide control signals to the horizontal time base and/or a colour signal code converter. The time base control signal, in accordance with its binary value, controls the frequency of the time base. The colour converter, in response to the control signals, either passes colour signals received in parallel over six input lines without change to the cathode ray tube drive circuits or converts colour signals on four of the input lines to output signals on the six lines to the drive circuits.
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公开(公告)号：BR8503045A
公开(公告)日：1986-03-11
申请号：BR8503045
申请日：1985-06-25
Applicant: IBM
Inventor： RACKLEY DARWIN PRESTON , SAENZ JESUS ANDRES , YOSIM PAUL STEWART
Abstract: A digital display system includes a monitor arranged to receive digital display data and synchronising signals to develop displays on a cathode ray tube. The monitor is switched between different line structure and/or colour definition modes in response to the polarity of one of the vertical or horizontal synchronising signals trains. A circuit receives this train to provide control signals to the horizontal time base and/or a colour signal code converter. The time base control signal, in accordance with its binary value, controls the frequency of the time base. The colour converter, in response to the control signals, either passes colour signals received in parallel over six input lines without change to the cathode ray tube drive circuits or converts colour signals on four of the input lines to output signals on the six lines to the drive circuits.
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Patent Agency Ranking
公开(公告)号：ZA8103722B
公开(公告)日：1982-06-30
申请号：ZA8103722
申请日：1981-06-03
Applicant: IBM
CPC classification number: H04N1/3875
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公开(公告)号：IN177672B
公开(公告)日：1997-02-15
申请号：IN110DE1988
申请日：1988-02-09
Applicant: IBM
Inventor： MOREL JEANNE ELLEN , RACKLEY DARWIN PRESTON , TRYNOSKY STEPHEN WAYNE , WALL WILLIAM ALLIAN
IPC: G09F9/33
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公开(公告)号：DE3779554T2
公开(公告)日：1993-01-28
申请号：DE3779554
申请日：1987-09-08
Applicant: IBM
Abstract: An all points addressable raster scan graphics display system is operable in two modes. In the first mode, data is extracted from a refresh store, serialised, modified, and applied to a display device at a first frequency. In the second mode, data is extracted from the refresh store, serialised and partially modified at said first frequency, but it is then further modified and passed to the display device at an even sub harmonic, for example half, of the first frequency. The further modification includes concatenation of successive groups of display data bits. Accordingly, with the raster scan device operating at a constant scan velocity, the first mode provides a high picture element definition but relatively low colour definition display, and the second mode provides a display with an even submultiple, for example half, the picture element definition but considerably greater colour definition.
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公开(公告)号：AT76993T
公开(公告)日：1992-06-15
申请号：AT87113100
申请日：1987-09-08
Applicant: IBM
Abstract: An all points addressable raster scan graphics display system is operable in two modes. In the first mode, data is extracted from a refresh store, serialised, modified, and applied to a display device at a first frequency. In the second mode, data is extracted from the refresh store, serialised and partially modified at said first frequency, but it is then further modified and passed to the display device at an even sub harmonic, for example half, of the first frequency. The further modification includes concatenation of successive groups of display data bits. Accordingly, with the raster scan device operating at a constant scan velocity, the first mode provides a high picture element definition but relatively low colour definition display, and the second mode provides a display with an even submultiple, for example half, the picture element definition but considerably greater colour definition.
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公开(公告)号：HK9591A
公开(公告)日：1991-02-08
申请号：HK9591
申请日：1991-01-31
Applicant: IBM
Inventor： KUMMER DAVID ALLEN , RACKLEY DARWIN PRESTON , SAENZ JESUS ANDRES
Abstract: @ A raster scan display system includes a plurality of storage maps (MAPO to MAP4). These maps are addressable in either of two modes. In the first mode each map contains bit mapped data and the maps are addressed together to provide colour signals from which colour video signals are derived. In the second mode, one map contains character representing data and a further map, character display dot patterns. In this mode the first map is addressed to provide partial addresses for the further map. These partial addresses are combined with row scan data signals to access the further map from which the character display dot data is used to generate the video signals.
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