Patent ID: 8233364
Filing Date: 2012-07-31
Classification: G11B

Abstract:
1. An optical disc identifying device, comprising: an optical pickup head having a plurality of laser diodes and a lens, wherein during a start-up procedure, a non-blue laser diode of the plurality of laser diodes of the optical pickup head is turned on to irradiate an optical disc, thereby generating an electronic signal; a digital signal processor for outputting a driving signal, thereby controlling a motor driver to move the lens in a focusing direction; and a radio frequency amplifier for receiving the electronic signal during the movement of the lens, thereby generating a first signal, wherein the digital signal processor includes a detecting unit for comparing the first signal with a slicing signal to generate a pulse signal, and determining whether the optical disc is a blue-ray disc or a non-blue-ray disc according to a pulse number of the pulse signal; wherein if the pulse number is equal to 1, the optical disc is determined as the blue-ray disc, and if the pulse number is not equal to 1, the optical disc is determined as the non-blue-ray disc.