公开(公告)号：GB2278936A

公开(公告)日：1994-12-14

申请号：GB9312053

申请日：1993-06-11

Applicant: IBM

Inventor： SIMMONS JOHN ,  TODD STEPHEN JAMES PAUL

IPC: G06F15/18 ,  G06F17/50 ,  G06N3/00 ,  G05B13/04

公开(公告)号：AU2336377A

公开(公告)日：1978-09-21

申请号：AU2336377

申请日：1977-03-17

Applicant: IBM

Inventor： KINGDOM-HOCKINGS MICHAEL LEHEG ,  MIDDLETON BRIAN HARLAND ,  PINNELL MARTIN COXWELL ,  ROBINSON THOMAS EDWARD ,  SIMMONS JOHN ,  BENSON PAUL HOWARD ,  SHEELER RICHARD EDWARD

IPC: G06F12/00 ,  G06F12/10 ,  G06F17/30 ,  G06Q10/00 ,  G07B1/02 ,  G06F3/04 ,  G06F15/24 ,  G06F15/26

Abstract: Described is an interactive enquiry system in which a complete data base is contained at a host computer. Local terminal sub-systems are remotely connected to the host with each local sub-system containing a local data base. Each local data base is dynamically maintained so that the most frequently used pages are retained in local storage. If storage space needs to be created, the least frequently used pages are discarded from the local data base.

公开(公告)号：DE3377683D1

公开(公告)日：1988-09-15

申请号：DE3377683

申请日：1983-12-19

Applicant: IBM

Inventor： IMPEY ALAN A ,  POWELL COLIN V ,  SIMMONS JOHN ,  EASTON COLIN J

IPC: G09G5/377 ,  G06F3/048 ,  G06F3/14 ,  G09G5/14 ,  G09G1/16 ,  G09G1/00

Abstract: The system comprises a pixel buffer in which the data to be displayed on the screen is stored and a mask buffer having a bit value corresp. to each pixel. The mask buffer is set in response to the demands of a particular application for screen display. A logic circuit uses data in the mask buffer to determine whether a pixel will be written during vector or character drawing. The buffer has multiple display planes, each containing the same number of pixels as the screen can display. The operation of the mask and the selection of the display plane is under control of a microprocessor with its associated Random Access and Read Only memories. The logic circuit may be simulated in software if hardware operation is not possible.

公开(公告)号：CA1229439A

公开(公告)日：1987-11-17

申请号：CA469784

申请日：1984-12-11

Applicant: IBM

Inventor： IMPEY ALAN A ,  POWELL COLIN V ,  SIMMONS JOHN ,  EASTON COLIN J

IPC: G09G5/377 ,  G06F3/048 ,  G06F3/14 ,  G09G5/14 ,  G09G3/00

Abstract: A display system which is used as the input-output terminal of a data processing system which may be used for concurrent processing of application. Each application may have a viewport on the display screen and viewports may overlap. In order to write to low priority viewports without disturbing data displayed in those of a higher priority a mask buffer is used to prevent overwriting of high priority viewports. More particularly, this application describes a multi-viewport system in which the writing of application data into overlapping viewports is controlled by a screen manager. The screen manager maintains a series of priority flags for each pixel (bit in the screen buffer) relating to the layers of the viewports, and a viewport order list. Only the current, or higher priority viewport is written into by an application. There is no provision for having more than one application writing into a lower priority viewport overlapped by the current viewport other than serially, i.e. writing to one viewport is completed before processing the next one. The main advantage of the present invention is that lower priority viewports may be written into requiring only a single pass over the data held in a data buffer, and it is able to handle the most complex of overlaid viewports.

公开(公告)号：DE2749710A1

公开(公告)日：1978-05-24

申请号：DE2749710

申请日：1977-11-07

Applicant: IBM

Inventor： ROBERTS DAVID JOHN ,  SIMMONS JOHN

IPC: G06F11/00 ,  G06F21/00 ,  G06F21/22 ,  G06Q20/38 ,  G07F7/10

Abstract: A data processing system is described which issues value documents e.g. tickets or information under the control of output instructions and is designed to prevent a person attempting fraud using an unauthorized program obtaining the value documents or information. The system includes a data processor controlling output units which can issue value documents or information and data storage. The data storage is divided into a secure store containing the output instructions arranged to make tampering difficult and a free storage into which an operator may load a program. Security logic is provided to check that an output instruction has originated in the secure store and to prevent operation of an output unit which receives output instructions from free storage. This makes it difficult for a person attempting fraud to produce value documents or information by loading a program into free storage. The secure storage is preferably a read only store programmed during manufacture. When secure and free storage share a common memory bus, the security logic monitors addresses used to fetch instructions.

公开(公告)号：CH613541A5

公开(公告)日：1979-09-28

申请号：CH224277

申请日：1977-02-23

Applicant: IBM

Inventor： KINGDOM-HOCKINGS MICHAEL LE HE ,  MIDDLETON BRIAN HARLAND ,  PINNELL MARTIN COXWELL ,  ROBINSON THOMAS EDWARD ,  SIMMONS JOHN ,  BENSON PAUL HOWARD ,  SHEELER RICHARD EDWARD

IPC: G06F12/00 ,  G06F12/10 ,  G06F17/30 ,  G06Q10/00 ,  G07B1/02 ,  G06F13/00 ,  G06F15/26

Abstract: Described is an interactive enquiry system in which a complete data base is contained at a host computer. Local terminal sub-systems are remotely connected to the host with each local sub-system containing a local data base. Each local data base is dynamically maintained so that the most frequently used pages are retained in local storage. If storage space needs to be created, the least frequently used pages are discarded from the local data base.

公开(公告)号：FR2357960A2

公开(公告)日：1978-02-03

申请号：FR7703510

申请日：1977-02-01

Applicant: IBM

Inventor： KINGDOM-HOCKINGS MICHAEL L ,  MIDDLETON BRIAN H ,  PINNELL MARTIN C ,  ROBINSON THOMAS E ,  SIMMONS JOHN ,  BENSON PAUL H ,  SHEELER RICHARD E ,  SNAGGE THOMAS H

IPC: G06F12/10 ,  G06F17/30 ,  G06Q10/00 ,  G07B1/02 ,  G06F15/20 ,  G07B1/00

Abstract: The central computer (1) operates in conjunction with a transportation system data bank contained on a magnetic disc store (2). Additional processing units (6) allow interaction with other associated transportation systems. Local sub stations (4) connect over a data bus with the central computer. Each sub-station has a communications interface (10) with an internal programmed memory (9), arithmetic unit (8), input/output interface and an interface (12) to a store (17) containing data specific to the sub-station. A console (13) has a keyboard (15), printer (16) and visual display unit (14).

公开(公告)号：FR2371731A1

公开(公告)日：1978-06-16

申请号：FR7729871

申请日：1977-09-28

Applicant: IBM

Inventor： ROBERTS DAVID J ,  SIMMONS JOHN

IPC: G06F21/00 ,  G06F11/00 ,  G06F21/22 ,  G06Q20/38 ,  G07F7/10

Abstract: A data processing system is described which issues value documents e.g. tickets or information under the control of output instructions and is designed to prevent a person attempting fraud using an unauthorized program obtaining the value documents or information. The system includes a data processor controlling output units which can issue value documents or information and data storage. The data storage is divided into a secure store containing the output instructions arranged to make tampering difficult and a free storage into which an operator may load a program. Security logic is provided to check that an output instruction has originated in the secure store and to prevent operation of an output unit which receives output instructions from free storage. This makes it difficult for a person attempting fraud to produce value documents or information by loading a program into free storage. The secure storage is preferably a read only store programmed during manufacture. When secure and free storage share a common memory bus, the security logic monitors addresses used to fetch instructions.