Discharge lamp drive device, light source device, projector, and discharge lamp drive method

A discharge lamp drive device comprising:

• a discharge lamp driver adapted to supply a drive current to a discharge lamp having a first electrode and a second electrode;
• a control section adapted to control the discharge lamp driver;
• and
• a storage section adapted to store a plurality of drive patterns of the drive current,
• wherein each of the drive patterns has a plurality of drive parameters,
• wherein the plurality of drive patterns includes a first drive pattern and a second drive pattern different from each other in a value of at least one of the plurality of drive parameters, and
• wherein the control section is configured to execute the first drive pattern and the second drive pattern in accordance with at least one of accumulated lighting time of the discharge lamp and an individual of the discharge lamp in a case in which an inter-electrode voltage of the discharge lamp is at a predetermined voltage value.