Epson Research and Development
Page 31
Vancouver Design Center
Programming Notes and Examples S1D13706
Issue Date: 01/02/23 X31B-G-003-03
7 SwivelView
Most computer displays operate in landscape mode. In landscape mode the display is wider
than it is high. For example, a standard display size of 320x240 is 320 pixels wide and 240
pixels wide.
SwivelView rotates the display image counter-clockwise in ninety degree increments,
possibly resulting in a display that is higher than it is wide. Rotating the image on a
320x240 display by 90 or 270 degrees yields a display that is now 240 pixels wide and 320
pixels high.
SwivelView also works with panels that are designed with a “portrait” orientation. In this
case, when SwivelView 0° is selected, the panel will be in a “portrait” orientation. A
selection of SwivelView 90° or SwivelView 270° rotates to a landscape orientation.
The S1D13706 provides hardware support for SwivelView in all color depths (1, 2, 4, 8 and
16 bpp).
For further details on the SwivelView feature, see the S1D13706 Hardware Functional
Specification, document number X31B-A-001-xx.
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