Patent ID: 7147535

Claim:
A motorized mobile toy comprising: four wheels; a remote controller which has a light source which emits, in a ground direction, a light beam which is modulated at a frequency above a domestic light frequency modulation, the remote controller configured to generate a spot on a ground surface through a lens of collimation that focuses light from a light source generated by a transmitting diode; at least two optoelectronic sensors which are disposed on two opposite front sides of the toy, wherein reception fields of the sensors are oriented towards the ground surface and the sensor are each configured to deliver a control signal substantially proportional to an intensity of a flow of the modulated light which is received in the respective reception field; and at least one electric motor configured to receive the control signals and drive one wheel of the toy at a substantially proportional speed to the intensity of the flow of the modulated light received in the respective reception field, wherein a difference of the control signals delivered by two of the at least two optoelectronic sensors controls a steering of the toy on a side of the optoelectronic sensor which delivers a greater control signal and a sum of the control signals delivered by two of the at least two optoelectronic sensors controls a driving forward of the toy so that the toy follows and reaches the spot on the ground surface.