Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1981-06-22
1983-01-04
Trafton, David L.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340701, 340724, 340799, G09G 116
Patent
active
043674666
ABSTRACT:
A screen of a scanning type display is divided both in the horizontal and vertical directions or abscissa and ordinate directions into a relatively large number of dots, so that the screen comprises an arrangement of dots (of the total number of the relatively large number by the relatively large number) arranged in the horizontal and vertical directions. The arrangement of dots of the screen is divided into columns each having a relatively small number of dots in the horizontal or abscissa direction. Each column is identified by a corresponding ordinal number so that the same may be the abscissa information. On the other hand, each row of each column is identified by a corresponding ordinal number so that the same may be the ordinate information. Two line buffer memories are provided for storing display control information of lines which are different by a predetermined number of lines in the vertical direction. These line buffer memories are alternately controlled such that while one is in a write mode the other is in a read mode, whereby the same are alternately changed to the write mode and the read mode for each line of the horizontal scanning lines. Character information is read from a character pattern storing memory responsive to the display control information read from the other line buffer memory. A display position of the character is freely changed in the vertical direction and/or the horizontal direction on a dot-by-dot basis by controlling the read timing of the character information. A deformed character can also be displayed from the same character information by changing for each line the reading of the character information.
REFERENCES:
patent: 4070710 (1978-01-01), Sukonick et al.
Hatakeyama Masato
Takeda Genyo
Fasse W. G.
Kane, Jr. D. H.
Nintendo Co. Ltd.
Trafton David L.
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