OTA bitmap

OTA Bitmap was a specification designed by Nokia for black and white images for mobile phones.

The specification contains a byte of data to be used for indicating a multicolour image.

The first 8 pixels, reading right from the top left hand corner are one white (0) followed by seven blacks (1111111), giving the first byte, in Binary, as 01111111.

Converting from the binary 01111111 to hex, results in the first byte that represents the pixels (7F).

Note to review: there is no write support for OTA format in XnView