The file with extension .rb holds the Rocket eBook content. The Rocket eBook is actually a device made by Nuvo Media; they released this device in 1998. Although Rocket eBook is capable of displaying images, but only in black and white display. It has the screen of 106 dpi or 480 x 320 pixels on a 4.5 x 3 inch touch screen. The Rocket eBook connects to a computer via a serial port connection to download eBooks in RB file format. The RB files are capable to use DRM but this technology is not being used in modern e-books. The RB file conventionally contains an HTML file with the images and a pseudo-OPF file with all of the metadata (.info).
How to create RB content
Following programs can generate RB content:
windows - Can also view RB files
RocketLibrarian by NuvoMedia (supplied with Rocket eBook)
check the direct link to RocketLibrarian (v.1.3.222).
eBook Librarian by Gemstar (supplied with REB 1100)
check the ‘REB1100 Install CD’ link which contains eBook Librarian (v.2.0.241).
windows/Unix - hosted on SourceForge (also rbinfo, rbdump). RBMake can also disassemble RB files.
How to Read RB
Following Programs can read and convert unencrypted RB books:
windows/Unix - (from rbmake hosted on SourceForge)