05587723 is referenced by 38 patents and cites 15 patents.

A display range control apparatus includes an external storage unit in which position data representative of two points in a horizontal direction on a screen of a raster scan monitor are stored in advance together with still picture pattern data and character data. A counter is incremented for each dot or pixel on the screen. In a range where each of the position data is coincident with a count value of the counter, a masking signal is obtained. The masking signal is used for gating picture data using a gate circuit. The picture data outputted from the gate circuit is converted into a video signal which is then applied to the monitor.

Title
Display range control apparatus and external storage unit for use therewith
Application Number
792196
Publication Number
5587723
Application Date
April 13, 1994
Publication Date
December 24, 1996
Inventor
Takashi Otsuki
Tokyo
JP
Satoshi Nishiumi
Kyoto
JP
Toyofumi Takahashi
Tokyo
JP
Masahiro Otake
Kyoto
JP
Agent
Nixon & Vanderhye P C
Assignee
Ricoh
JP
Nintendo
JP
IPC
G09G 1/16
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