P800/P802
White Paper, January 2003
Image formats
The table below explains the various image formats supported by the P800, together with indicative file sizes for a QVGA (320 x 240 pixel) image.
Format | Example | Description |
| File Size |
|
| BMP | 226kB | Microsoft Windows Bitmap. A graphics format defined by |
|
| Microsoft supporting 1, 4, 8 or 24 bit colour depth. No |
|
| compression, so files can be very large. Used for icons and very |
|
| small images. |
|
|
|
| GIF | 42kB | Graphics Interchange Format. Highly compressed by limiting the |
|
| colour palette to 16 or 256 colours. GIF is therefore good for icons |
|
| and diagrams. When a Jotter sketch is send as an |
|
| attachment, the GIF format is used. |
|
|
|
GIF | 210kB | A GIF file containing a number of images in a timed and repeating |
| (animated) | (5 | sequence. Some P800 applications display only the first image in |
| frames) | the sequence. |
|
|
|
| JPEG | 13kB | An image compression format managed by the Joint |
| (.JPG) |
| Photographic Experts Group. The format supports various |
|
| degrees of compression, enabling different |
|
| balances to be provided in one standard. JPG files support |
|
| millions of colours and are therefore good for ‘real life’ |
|
| photographs. |
|
|
|
| MBM |
| Multi Bitmap. This is a Symbian OS format for colour and |
|
| greyscale bitmap images. |
|
|
|
| PNG | 166kB | Portable Network Graphics. PNG compresses images with |
|
| millions of colours no loss of detail, but has comparatively large |
|
| file size. It is not commonly used. |
|
|
|
| WBMP |
| Wireless BitMap. Part of the WAP specifications, an image format |
|
| optimised for small mobile devices. The P800 supports Black and |
|
| White, |
|
| 3GPP TS 23.040 |
Colour Screen
Images having more than 4096 colours will be adjusted to display optimally within the capabilities of the P800 screen.
Images larger than the display area will generally be scaled to fit the application window.
The Image Viewer uses 192 x 144 pixels in full screen mode.
Screen Specification
Type: | TFT |
Size, flip closed: | 208 x 144 pixels, 40 x 28 mm |
Size, flip open: | 208 x 320 pixels, 40 x 61 mm |
Pixel Size: | 0.192 mm |
Pixel Density: | 132 DPI (Dots Per Inch) |
Colour depth: | |
Surface: | |
Illumination: |
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