Apparatus for writing a data to an optical storage media and servo control unit and laser diode driver unit thereof

A servo control unit for outputting an encoded signal to a laser diode driver unit, the servo control unit comprising:

• a control unit for controlling a burning procedure for writing the optical storage media;
• and
• a modulation unit, which is controlled by the control unit, for receiving write data and modulating the write data into a data signal, combining the data signal with a sequence signal, which corresponds a clock signal of the data signal, to form an encoded signal, and then outputting the encoded signal;
• wherein the encoded signal is composed of the data signal and the sequence signal at different time intervals, the encoded signal is the sequence signal when the burning procedure does not start or pauses, and the encoded signal is the data signal when the burning procedure starts.

A laser diode driver unit for receiving an encoded signal outputted by a servo control unit and making a laser diode emit light to write data to an optical storage media, the laser diode driver unit comprising:

• a PLL (Phase-Locked Loop) unit for acquiring at least one of a clock signal and a data signal according to the encoded signal;
• a write strategy generation unit for outputting a control signal to control a writing operation of the laser diode according to the clock signal and the data signal;
• and
• a lock/unlock detection unit for detecting a state of the PLL unit, and outputting a lock indicator or an unlock indicator to the servo control unit accordingly to make the servo control unit start or pause a burning procedure.

An apparatus for writing data to an optical storage media and making a laser diode emit light, the apparatus comprising:

• a servo control unit, which comprises:
• a control unit for controlling a burning procedure for writing the optical storage media;
• a modulation unit, which is controlled by the control unit, for receiving write data and modulating the write data into a first data signal, combining the first data signal with a sequence signal, which corresponds to a first clock signal of the first data signal, to form an encoded signal, and then outputting the encoded signal;
• and
• a lock/unlock detection unit for receiving a divided clock signal and the first clock signal, and outputting a lock indicator or an unlock indicator to the control unit accordingly, wherein the control unit starts or pauses the burning procedure according to the lock indicator or the unlock indicator;
• and
• a laser diode driver unit for receiving the encoded signal, the laser diode driver unit comprising:
• a PLL (Phase-Locked Loop) unit for outputting at least one of a second clock signal and a second data signal according to the encoded signal;
• a write strategy generation unit for outputting a control signal to control a writing operation of the laser diode according to the second clock signal and the second data signal;
• and
• a divided clock generation unit for outputting the divided clock signal according to the second clock signal,
• wherein the encoded signal is composed of the first data signal and the sequence signal at different time intervals, the encoded signal is the sequence signal when the burning procedure does not start or pauses, and the encoded signal is the first data signal when the burning procedure starts.

A servo control unit for outputting an encoded signal to a laser diode driver unit, the servo control unit comprising:

• a control unit for controlling a burning procedure for writing a optical storage media;
• a modulation unit, which is controlled by the control unit, for receiving write data and modulating the write data into a data signal, combining the data signal with a sequence signal, which corresponds to a first clock signal of the data signal, to form an encoded signal, and then outputting the encoded signal;
• and
• a lock/unlock detection unit for receiving a first clock signal and a divided clock signal outputted by the laser diode driver unit, and outputting a lock indicator or an unlock indicator to the control unit according, the control unit starting or pausing the burning procedure according to the lock indicator or the unlock indicator,
• wherein the encoded signal is composed of the data signal and the sequence signal at different time intervals, the encoded signal is the sequence signal when the burning procedure does not start or pauses, and the encoded signal is the data signal when the burning procedure starts.

A laser diode driver unit for receiving an encoded signal outputted by a servo control unit and making a laser diode emit light to write data to an optical storage media according to a burning procedure, the laser diode driver unit comprises:

• a PLL (Phase-Locked Loop) unit for acquiring at least one of a clock signal and a data signal according to the encoded signal;
• a write strategy generation unit for outputting a control signal to control a writing operation of the laser diode according to the clock signal and the data signal;
• and
• a divided clock generation unit for outputting a divided clock signal according to the clock signal.

A method of writing data to an optical storage media and making a laser diode emit light, the method comprising the steps of:

• modulating write data into a first data signal;
• combining the first data signal with a sequence signal, which corresponds to a first clock signal of the first data signal, to form an encoded signal;
• generating at least one of a second clock signal and a second data signal according to the encoded signal;
• generating a control signal to control a writing operation of the laser diode according to the second clock signal and the second data signal;
• detecting states of the encoded signal and the second clock signal, and outputting a lock indicator or an unlock indicator accordingly;
• and
• starting or pausing a burning procedure for writing the optical storage media according to the lock indicator or the unlock indicator,
• wherein the encoded signal is composed of the first data signal and the sequence signal at different time intervals, the encoded signal is the sequence signal when the burning procedure does not start or pauses, and the encoded signal is the first data signal when the burning procedure starts.

A method of writing data to an optical storage media and making a laser diode emit light, the method comprising the steps of:

• modulating write data into a first data signal;
• combining the first data signal with a sequence signal, which corresponds to a first clock signal of the first data signal, to form an encoded signal, and then outputting the encoded signal;
• outputting at least one of a second clock signal and a second data signal according to the encoded signal;
• outputting a control signal to control a writing operation of the laser diode according to the second clock signal and the second data signal;
• outputting a divided clock signal according to the second clock signal;
• outputting a lock indicator or an unlock indicator according to the divided clock signal and the first clock signal;
• and
• starting or pausing a burning procedure for writing the optical storage media according to the lock indicator or the unlock indicator,
• wherein the encoded signal is composed of the first data signal and the sequence signal at different time intervals, the encoded signal is the sequence signal when the burning procedure does not start or pauses, and the encoded signal is the first data signal when the burning procedure starts.