Light source apparatus, image pickup apparatus, and endoscope system
AssigneeOlympus Medical Systems Corp.
InventorRyohei Kagawa
Life of this patent
Estimating the term…
Abstract
A light source apparatus includes at least one processor comprising hardware. The at least one processor is configured to determine, in a first unit, a first frequency of a pulsed light with a first resolution and a second frequency of pulsed light with a second resolution based on a vibration frequency of an object, the first resolution being more precise than the second resolution, determine a difference between the first frequency and the second frequency in the first unit, and when the accumulated differences reach a first predetermined value, add a second predetermined value to the first frequency in a second unit subsequent to the first unit, and subtract a third predetermined value from the accumulated differences in the second unit.
Claims15
A light source apparatus comprising:
- at least one processor comprising hardware, the at least one processor being configured to:
- determine, in a first unit, a first frequency of a pulsed light with a first resolution and a second frequency of pulsed light with a second resolution based on a vibration frequency of an object, the first resolution being more precise than the second resolution;
- determine a difference between the first frequency and the second frequency in the first unit;
- determine accumulated differences including the difference in the first unit;
- and
- when the accumulated differences reach a first predetermined value, add a second predetermined value to the second frequency in a second unit subsequent to the first unit, and subtract a third predetermined value from the accumulated differences in the second unit.
A light source apparatus comprising:
- at least one processor comprising hardware, the at least one processor being configured to:
- control a light source that generates pulsed light with which an object is illuminated, and cause the light source to generate the pulsed light with a first temporal resolution,
- calculate, based on a vibration frequency of the object, a light emission cycle of the pulsed light with a second temporal resolution which is more precise than the first temporal resolution;
- round the light emission cycle calculated with the second temporal resolution to a precision of the first temporal resolution, to set the light emission cycle obtained by the rounding as the light emission cycle of the pulsed light that is generated by the light source;
- accumulate an error between the light emission cycle calculated with the second temporal resolution and the light emission cycle with the first temporal resolution calculated by the rounding;
- increase the light emission cycle with the first temporal resolution in a unit of the first temporal resolution and decrease the accumulated error in the unit of the first temporal resolution, when the accumulated error reaches a predetermined positive value;
- and
- decrease the light emission cycle with the first temporal resolution in the unit of the first temporal resolution and increase the accumulated error in the unit of the first temporal resolution, when the accumulated error reaches a predetermined negative value.
Dependencies are inferred from the claim text.