In this paper we study a model of the twodimensional quantum harmonic oscillator in a threedimensional anti-de Sitter background. We use a generalized Schrödinger picture in which the analogs of the Schrödinger operators of the particle are independent of both the time and the space coordinates in different representations. The spacetime independent operators of the particle induce the Lie algebra of Killing vector fields of the Ad S 3 spacetime. In this picture, we have a metamorphosis of the Heisenberg uncertainty relations.