Browse Prior Art Database

Keyboard Functional Extension With Local Function Key

IP.com Disclosure Number: IPCOM000119653D
Original Publication Date: 1991-Feb-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 2 page(s) / 71K

Publishing Venue

IBM

Related People

Komatsu, K: AUTHOR [+4]

Abstract

Disclosed is a design concept of a full function keyboard with reduced keys.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 61% of the total text.

Keyboard Functional Extension With Local Function Key

      Disclosed is a design concept of a full function keyboard
with reduced keys.

      Traditionally, a multiple function assignment on one key is
obtained by 'SHIFT' keys.  In this method, a shift status is handled
by control programs in a PC or a terminal, which receives a scan code
from 'SHIFT' keys.  In this environment, a new layout keyboard
requires a tailormade control program for it.  Therefore, it is a big
obstacle to design a small-sized keyboard with good usability in the
environment of a standardized control program in a PC or a terminal
to which the keyboard is attached.  The design concept actualizes
keyboard layouts being free from the restriction by standardized
control programs in a PC or a terminal and the restriction of the
total number of keys. In order to reduce the keys, some functions are
defined as extended functions, which locate under horizontal lines on
some keys in the figure.  Operators can call these extended functions
by pressing the extension keys, which have nomenclatures of

                            (Image Omitted)

 and each corresponding key.

      The keyboard is set into 'Extended Mode' while an operator is
pressing one of the extension keys.  The extension keys do not
generate scancode by themselves.  They generate appropriate scancodes
in combination with each corresponding key.  When an operator presses
a key, which has an exten...