Display apparatus

1. A display apparatus for a living body insertable apparatus, the living body insertable apparatus including an inserting unit configured to be inserted into a living body, and a power unit configured to generate a propulsive force for the inserting unit in the living body, the display apparatus comprising:

a controller configured to:

acquire a value relating to a driving force of the power unit;

determine a display area of a gauge based on the value, the display area varying according to the driving force; and

output a signal to display the gauge on a display device,

wherein the power unit generates a forward propulsive force to propel the inserting unit in a forward direction toward a distal side of the inserting unit, and a backward propulsive force to propel the inserting unit in a backward direction opposite to the forward direction toward a proximal side of the inserting unit, and

in the gauge, a direction in which the display area varies when the power unit generates the forward propulsive force is opposite to a direction in which the display area varies when the power unit generates the backward propulsive force,

wherein the controller is further configured to, as initial correction processing:

acquire individual information of the power unit stored in the power unit, the individual information relating to individual variation of a relation between the value relating to the driving force and the display area;

correct a calculation expression representing a relation between the value relating to the driving force and the display area; and

determine the display area based on the calculation expression.

2. The display apparatus according to claim 1 , wherein the controller is configured to display the gauge only when the power unit operates.

3. The display apparatus according to claim 1 , wherein the controller is configured to display the gauge with an index serving as a mark for the display area.

4. The display apparatus according to claim 1 , wherein

the inserting unit further includes an imaging unit configured to image an inside of the living body and acquire an image, and

the controller is configured to display the gauge with the image.

5. A display apparatus for a living body insertable apparatus, the living body insertable apparatus including an inserting unit configured to be inserted into a living body, and a power unit configured to generate a propulsive force for the inserting unit in the living body, the display apparatus comprising:

a controller configured to:

acquire a value relating to a direction of a driving force of the power unit;

determine a display configuration of a gauge configured to have the display configuration varying according to the direction of the driving force, based on the value; and

output a signal to display the gauge on a display device,

wherein the power unit generates a forward propulsive force to propel the inserting unit in a forward direction toward a distal side of the inserting unit, and a backward propulsive force to propel the inserting unit in a backward direction opposite to the forward direction toward a proximal side of the inserting unit,

in the gauge, a the display configuration varies according to whether the driving force is a forward driving force relating to the forward propulsive force or a backward driving force relating to the backward propulsive force; and

the controller is further configured to, as initial correction processing:

acquire individual information of the power unit stored in the power unit, the individual information relating to individual variation of a relation between the value relating to the driving force and the display configuration;

correct a calculation expression representing a relation between the value relating to the driving force and the display configuration; and

determine the display configuration based on the calculation expression.