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Row/Column Cursor Position Indicator by Request

IP.com Disclosure Number: IPCOM000041893D
Original Publication Date: 1984-Mar-01
Included in the Prior Art Database: 2005-Feb-03
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Troan, LE: AUTHOR

Abstract

Numeric representation, in terms of row and column, of the position at which a character can be entered on a display can provide helpful information to the operator, especially when performing text entry tasks. However, in systems where the processing power to develop this information and enter it on the display screen resides in a remote controller and not in the display itself, the provision of such a feature on a continuous basis would increase significantly the traffic on the link, such as a coax, between the controller and the display. It would also impose an extra burden on the controller. A solution is to provide this information only upon operator request.

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Row/Column Cursor Position Indicator by Request

Numeric representation, in terms of row and column, of the position at which a character can be entered on a display can provide helpful information to the operator, especially when performing text entry tasks. However, in systems where the processing power to develop this information and enter it on the display screen resides in a remote controller and not in the display itself, the provision of such a feature on a continuous basis would increase significantly the traffic on the link, such as a coax, between the controller and the display. It would also impose an extra burden on the controller. A solution is to provide this information only upon operator request. Actuation of a key by the operator at the keyboard of the display transmits the request to the controller which then derives the information from a cursor register in the controller. The controller then issues a WRITE command to the display together with the numeric data whereby the row, column information appears on the display screen in a place reserved for that purpose, such as in the display's indicator row. Thus the indicator is available when needed, but does not utilize control unit processor power unnecessarily. This numeric cursor position indicator is erased by the next keystroke or other screen update. The actual cursor position may or may not have changed and will continue to be shown in the data field of the display screen as a conventional cu...