Also known ad PTVOS, it is Scientific Atlanta's real-time operating system

Real-time operating system

A real-time operating system is an operating system intended to serve real-time application requests.A key characteristic of a RTOS is the level of its consistency concerning the amount of time it takes to accept and complete an application's task; the variability is jitter...

 for set top boxes

Set-top box

A set-top box or set-top unit is an information appliance device that generally contains a tuner and connects to a television set and an external source of signal, turning the signal into content which is then displayed on the television screen or other display device.-History:Before the...

 and other similar devices. First commercial deployment was on the Explorer 2000, SA's first digital cable box. The OS comes with a complete C library, an HTML engine for HTML rendering, and a full TCP/IP stack. Application development can be done using C or C++, or using PersonalJava. Compiler/linker etc. are available via Cygnus Solutions

Cygnus Solutions

Cygnus Solutions, originally Cygnus Support, was founded in 1989 by John Gilmore, Michael Tiemann and David Henkel-Wallace to provide commercial support for free software...

.

External links

The PowerTV Operating System