A LED backlight driving circuit is disclosed. The method includes storing a key allocated to at least one of terminals 12,13 or to at least one of the subscribers using one of the terminals 12,13, at the terminal 12,13 and at a node 5,8 within a network 1,6 through which session is conducted, or a node coupled to that network. The touch panel generates a current touch signal including a current touch position of a touch. The phase sweeping circuitry can receive the recovered clock signal, and output the scope clock signal by adding a phase offset to the recovered clock signal. The first and second switches are operated to commutate the inductor between the amplifiers so as to provide an amplified signal while limiting the ripple voltage on the inductor and thus limiting the maximum voltage imposed across the amplifiers and switches. 01 to 10 weight parts to 100 weight parts of rubber components containing natural rubber andor diene synthetic rubber:.