Display apparatus having horizontal/vertical conversion display

Details Display apparatus having horizontal/vertical conversion display Display apparatus having horizontal/vertical conversion display

1988-01-20

1990-08-28

Brier, Jeffery A.

Communications: electrical

Land vehicle alarms or indicators

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

340723, 340721, G09G 540

Patent

active

049529200

ABSTRACT:
In a document file apparatus, image data to be displayed on a CRT display unit of a vertical scanning type having a rectangular display area whose long sides are aligned with a horizontal direction is temporarily stored in a page memory. An enlarge/reduction circuit changes a character font generated by a character generator into a pattern of a predetermined size. The address of the converted character font is translated by a rotation buffer, and the character data is substantially rotated 90.degree., clockwise on the display screen. The 90.degree.-rotated data is temporarily stored in a display memory so as to correspond to the image data supplied from the display memory. An image corresponding to the stored image data is displayed on a CRT display unit. The image displayed on the CRT display screen is erected with respect to the normal viewing position of the operator.

REFERENCES:
patent: 4267555 (1981-05-01), Boyd et al.
patent: 4520399 (1985-05-01), Iida
patent: 4542377 (1985-09-01), Hagen et al.
patent: 4554638 (1985-11-01), Iida
patent: 4593407 (1986-06-01), Konishi et al.
patent: 4741635 (1988-05-01), Shibato et al.

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