 Using a separate image for a motionless background - rather than drawing the background into each frame together with the moving characters - became a standard technique in cel animation, dominant for many decades from soon after it was patented in 1914 until it was surpassed by digital techniques.After the introduction of the cinématographe, it took over 10 years before animated films returned to the theatres (with "Humorous Phases of Funny Faces" (1906) by J. Stuart Blackton).The animated segment in Winsor McCay's "Little Nemo" (1911) was probably the first animation to use more hand-drawn images than the 700 images of Reynaud's "Un Bon Bock".