Computer display with two-part cursor for indicating loci of ope

Details Computer display with two-part cursor for indicating loci of ope Computer display with two-part cursor for indicating loci of ope

1986-12-02

1989-02-21

Zache, Raulfe B.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

364521, 364900, G09G 302, G06F 314

Patent

active

048069167

ABSTRACT:
A system for creating and modifying strings of symbols in a computer storage apparatus includes a two-part cursor for guiding the operator. One cursor part indicates the exact location where entered symbols will be inserted. A second cursor part highlights a selected substring which is the object of certain commands, such as the delete command. Internally, the system provides memory management techniques for inserting and deleting symbols in response to operator commands. The display, including the two-part cursor, is derived from the memory contents with the aid of pointers, tables, and state variables.

REFERENCES:
patent: 4259725 (1981-03-01), Andrews et al.
patent: 4354185 (1982-10-01), Worborschil
patent: 4739318 (1988-04-01), Cohen
patent: 4742473 (1988-05-01), Shugar et al.

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