The player does not control the camera in any way - he/she cannot for example rotate it or move it to a different position.
This type of camera system was very common in early 3D games such as Crash Bandicoot or Tomb Raider since it is very simple to implement. In particular, if the current view is not suitable (either because it is occluded by an object, or because it is not showing what the player is interested in), it cannot be changed since the player does not control the camera.
TVI is a transitional technology to help people with already existing cable get higher resolutions.
To implement camera systems, video game developers use techniques such as constraint solvers, artificial intelligence scripts, or autonomous agents.
The first one was a standard tracking camera system except that it was partly driven by artificial intelligence.
Indeed, the system was "aware" of the structure of the level and therefore could anticipate certain shots.
An early example of this kind of camera system can be seen in Alone in the Dark.
While the characters are in 3D, the background on which they evolve has been pre-rendered.
In 3D video games, a virtual camera system aims at controlling a camera or a set of cameras to display a view of a 3D virtual world.