Patent ID: 7483346

Claim:
A device for reading from and/or writing on a rotating disk comprising a mobile opto-electromechanical device placed above the disk and connected to a motherboard via a set of electric wires, the opto-electromechanical device comprising actuators, a laser diode, photodetectors, and an electronic circuit controlling the diode and the actuators, each photodetector providing an analog-to-digital converter of the electronic circuit with an analog electric signal proportional to the received light signal, wherein the electronic circuit comprises a digital processing unit receiving signals digitized by the analog-to-digital converter and providing data of alignment of the opto-electromechanical device with respect to the disk, and a reference clock signal having its period substantially corresponding to a multiple or to a sub-multiple of the time period corresponding to the overflight by the opto-electromechanical device of a bit of the disk, the electronic circuit further comprising a synchronization unit receiving said reference clock signal and receiving, in a write phase, a signal of digital data to be written coming from the motherboard, and providing, in a write phase, a synchronized digital data signal intended for the laser diode.