公开(公告)号：CA1066440A

公开(公告)日：1979-11-13

申请号：CA253068

申请日：1976-05-21

Applicant: IBM

Inventor： BOWMAN ROBERT A ,  MACHOL GUENTHER K ,  TERLET RENE H

IPC: H04J6/02

Abstract: TIME DIVISION MULTIPLEXED LOOP COMMUNICATION SYSTEM WITH DYNAMIC ALLOCATION OF CHANNELS In a time division multiplexed loop communication system, a plurality of terminals share one or more channels of a multichannel frame, with a second plurality of terminals assigned to different channels. The communications controller may dedicate one or more of the channels to one of the terminals automatically and dynamically. Alternatively, one of a plurality of terminals assigned to a particular channel group can interrupt the controller and become automatically selected for communication.

公开(公告)号：DE2625467A1

公开(公告)日：1977-01-13

申请号：DE2625467

申请日：1976-06-05

Applicant: IBM

Inventor： BOWMAN ROBERT A ,  BURD MARK M

IPC: G06F3/02 ,  G06F3/023 ,  G06F3/048 ,  G06F3/147 ,  G09G3/04 ,  G09G5/00 ,  G09G5/22 ,  H03M11/20 ,  G06K15/20 ,  G06F3/14

Abstract: Data entered at a matrix keyboard or from a remote computer is loaded into a display buffer area of a random access storage device. Data is displayed by sequentially refreshing a plurality of display elements from a one character display buffer, loaded from the storage device under control of a display address counter. Data storage and data retrieval for display is multiplexed, with data retrieval being synchronous with respect to a system clock, and data loading being asynchronous from the keyboard. A control counter, synchronously driven by the system clock, is decoded to scan the keyboard for data entry and to gate the one character display buffer to the next sequential display element to be refreshed. Initial correspondence between the display gating and the display address counter is established, which correspondence is asynchronously stepped by entry of another character from the keyboard, so that the most recently entered character appears at the rightmost position of the display.

公开(公告)号：FR2314541A1

公开(公告)日：1977-01-07

申请号：FR7613465

申请日：1976-04-29

Applicant: IBM

Inventor： BOWMAN ROBERT A ,  BURD MARK M

IPC: G06F3/023 ,  G06F3/048 ,  G06F3/147 ,  G06F3/02 ,  G09G3/04 ,  G09G5/00 ,  G09G5/22 ,  H03M11/20 ,  G06K15/18 ,  G06F3/14

Abstract: Data entered at a matrix keyboard or from a remote computer is loaded into a display buffer area of a random access storage device. Data is displayed by sequentially refreshing a plurality of display elements from a one character display buffer, loaded from the storage device under control of a display address counter. Data storage and data retrieval for display is multiplexed, with data retrieval being synchronous with respect to a system clock, and data loading being asynchronous from the keyboard. A control counter, synchronously driven by the system clock, is decoded to scan the keyboard for data entry and to gate the one character display buffer to the next sequential display element to be refreshed. Initial correspondence between the display gating and the display address counter is established, which correspondence is asynchronously stepped by entry of another character from the keyboard, so that the most recently entered character appears at the rightmost position of the display.

公开(公告)号：FR2311462A1

公开(公告)日：1976-12-10

申请号：FR7610166

申请日：1976-04-01

Applicant: IBM

Inventor： BOWMAN ROBERT A ,  MACHOL GUENTHER K ,  TERLET RENE H

IPC: H04L5/22 ,  G06F13/00 ,  H04L12/423 ,  H04M9/02

Abstract: In a time division multiplexed loop communication system, a plurality of terminals share one or more channels of a multichannel frame, with a second plurality of terminals assigned to different channels. The communications controller may dedicate one or more of the channels to one of the terminals automatically and dynamically. Alternatively, one of a plurality of terminals assigned to a particular channel group can interrupt the controller and become automatically selected for communication.

公开(公告)号：DE2607819A1

公开(公告)日：1976-11-25

申请号：DE2607819

申请日：1976-02-26

Applicant: IBM

Inventor： BOWMAN ROBERT A ,  MACHOL GUENTHER KEITH ,  TERLET RENE HENRI

IPC: H04L5/22 ,  G06F13/00 ,  H04L12/423 ,  H04L11/16 ,  H04J3/16 ,  G06F3/04

Abstract: In a time division multiplexed loop communication system, a plurality of terminals share one or more channels of a multichannel frame, with a second plurality of terminals assigned to different channels. The communications controller may dedicate one or more of the channels to one of the terminals automatically and dynamically. Alternatively, one of a plurality of terminals assigned to a particular channel group can interrupt the controller and become automatically selected for communication.