While primarily linked to Panasonic, similar "viewer frame" concepts exist in other hardware contexts:
Elias watched. The ballroom was empty, filled with rows of covered chairs. But in the background, faint and distorted by the audio compression, he could hear music. It was a slow, orchestral waltz. viewerframe+mode
This is a deep technical and cultural analysis of the viewerframe+mode search query. While primarily linked to Panasonic, similar "viewer frame"