HFM enable control system

A modulation control system for use with a high frequency modulator, comprising:

• first and second switches for receiving enable signals associated current enable channels, wherein the first and second switches respectively transmit first and second switched signals;
• a latch coupled to the switches for receiving the first and second switched signals, wherein the latch transmits a latched signal in response to receiving the first and second switched signals;
• a third switch coupled to the latch for receiving the latched signal, and a terminal for receiving at least one of the enable signals, wherein the third switch transmits a selected signal;
• and
• a logic device coupled to receive the selected signal, wherein the logic device transmits a synchronized signal for either enabling or disabling the high frequency modulator in response to receiving the selected signal.

An optical disk drive system, comprising:

• a controller monitoring an output power lever of laser, diode and transmitting adjustment signals for varying the output power level;
• a driver operatively coupled to the controller for receiving the adjustment signals, the laser driver having a current gain control system for independently altering gains associated with first and second input channels, comprising:
• a latch for selectively receiving enable signals, wherein the latch transmits a latched signal in response to receiving at least two of the enable signals;
• a selection device coupled to the latch for receiving the latched signal, a voltage source, and a terminal for receiving at least one of the enable signals, wherein the selection device transmits a selected signal;
• and
• a logic device coupled to the selection device and a terminal for receiving a modulated enable signal,
• wherein the logic device transmits a synchronized signal for either enabling or disabling the high frequency modulator in response to receiving the selected signal associated with at least one of the enable signals.