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公开(公告)号：HK61692A
公开(公告)日：1992-08-28
申请号：HK61692
申请日：1992-08-20
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：AU7976387A
公开(公告)日：1988-04-21
申请号：AU7976387
申请日：1987-10-14
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：AU623457B2
公开(公告)日：1992-05-14
申请号：AU4609089
申请日：1989-12-08
Applicant: IBM
Inventor： BUSH GREGORY FREDERICK , KEENER DON STEVEN , MOREL JEANNE ELLEN , VOORHEES RICHARD W
Abstract: In order to more effectively use read only memory space of a personal computer system, ROM code is selectively located or mapped to either an address boundary which is an even or odd integer multiple of one half the capacity of the read only memory device in which the ROM code is stored. The ROM code is stored in the read only memory device in two fields. In a first field, the ROM code is broken up into two segments, and the first segment precedes the second segment. In the second field, the same two segments are stored, but the second segment is stored preceding the first segment. A register, for storing page select bits, provides an input to an address decoder and an input to an adder, which adds unity to the contents of the register and provides its output to the address decoder as well. Accordingly, the address decoder will respond to either the page which is identified by the page select bits or the page following the identified page. The LSB of the page select bits is used in addressing the read only memory device to select between the first field (selected when the LSB is zero) or the second field (selected when the LSB is unity).
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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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Patent Agency Ranking
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：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：DE3940302A1
公开(公告)日：1990-06-13
申请号：DE3940302
申请日：1989-12-06
Applicant: IBM
Inventor： BUSH GREGORY FREDERICK , KEENER DON STEVEN , MOREL JEANNE ELLEN , VOORHEES RICHARD
IPC: G06F12/06
Abstract: In order to more effectively use read only memory space of a personal computer system, ROM code is selectively located or mapped to either an address boundary which is an even or odd integer multiple of one half the capacity of the read only memory device in which the ROM code is stored. The ROM code is stored in the read only memory device in two fields. In a first field, the ROM code is broken up into two segments, and the first segment precedes the second segment. In the second field, the same two segments are stored, but the second segment is stored preceding the first segment. A register, for storing page select bits, provides an input to an address decoder and an input to an adder, which adds unity to the contents of the register and provides its output to the address decoder as well. Accordingly, the address decoder will respond to either the page which is identified by the page select bits or the page following the identified page. The LSB of the page select bits is used in addressing the read only memory device to select between the first field (selected when the LSB is zero) or the second field (selected when the LSB is unity).
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