Patent ID: 7010371
Filing Date: 2006-03-07
Classification: G10H,G11B

Abstract:
1. A digital audio signal player having a simulated analogue record, comprising a microprocessor; a high frequency amplifier, the high frequency amplifier being electrically connected to the microprocessor to send out laser light when activated by the microprocessor; a CD digital processor electrically connected to both the microprocessor and the high frequency amplifier; the CD digital processor informing the microprocessor of status of focusing of the laser light so that the microprocessor will stop working when the laser light fails to focus, and will activate a CD driving motor to rotate a CD turntable at twice a normal speed when the laser light succeeds in focusing; a digital audio signal processor electrically connected to both the microprocessor and the CD digital processor; a laser pick-up electrically connected to the high frequency amplifier; the laser pick-up sending data of the CD to the CD digital processor; the digital audio signal processor including a dynamic RAM to store the data of the CD with which; a digital/analog converter electrically connected to the digital audio signal processor for converting the digital data from the digital audio signal processor into analogue ones, which are then sent through a low pass filter and played as music; a low pass filter electrically connected to the digital/analog converter; and, a turnable control element made of conductive materials, and electrically connected to both the digital audio signal processor and the microprocessor; the turnable control element having a light sensitive device, which will senses rotating speed and direction thereof; and being characterized by a high frequency alternator constantly sending out a high frequency signal; the high frequency alternator having an output terminal electrically connected to P pole of a diode connected in series with a buffer electrically connected to the microprocessor; the turnable control element having an output terminal also connected to the P pole of the diode; the microprocessor making the digital audio signal processor send out the digital data stored in the RAM in a normal way so that the music is played in a normal way when it receives the high frequency signal in a non-reduced form; the turnable control element sending an interfering signal to the diode so as to reduce the high frequency signal through the diode when touched by a hand of a person, thus making the microprocessor receive a high frequency signal in a reduced form from the high frequency alternator; the microprocessor making the digital audio signal processor send out the digital data in a manner according to the movement of the turnable control element as sensed by the light sensitive device when receiving the reduced high frequency signal; whereby music can be played with changing direction and speed by means of rotating the turnable control element with a hand; music being played in an original way as soon as the hand is removed from the turnable control element for disappearance of the interfering signal, allowing the high frequency signal to be sent to the microprocessor in a non-reduced form.