Display control device and display control method

1 . A display control device comprising:

a positional information acquisition unit that acquires positional information representing a current position of a vehicle;

a speed information acquisition unit that acquires speed information representing a speed of the vehicle;

a calculator that, based on the positional information that is acquired by the positional information acquisition unit and the speed information that is acquired by the speed information acquisition unit, calculates a time required to travel from the current position of the vehicle to a guide point where the next leading guide is made on a route to a destination that the vehicle travels;

a determination unit that determines whether the required time that is calculated by the calculator is equal to or more than a threshold time;

a display controller that changes a display mode of a display screen based on a result of the determining by the determination unit; and

a line-of-sight operation receiver that receives an operation performed using a line of sight of a person on board on the display screen,

wherein the display mode includes a first mode in which music information on music that is being reproduced in the vehicle is displayed and a second mode that is different from the first mode and in which information other than the music information is displayed,

the line-of-sight operation receiver receives a saving operation of saving information on the music that is being reproduced using a line of sight in the first mode and causes a storage unit to store the saving information on the music that is being reproduced, and

the display controller makes a switch from the second mode to the first mode after the guide point is passed, and

the line-of-sight operation receiver saves the music being reproduced with a high priority when the line-of-sight operation receiver receives the saving operation within a threshold operation time after the switch from the second mode to the first mode is made.

2 . The display control device according to claim 1 , wherein the display controller makes a switch from the first mode to the second mode when the determination unit determines that the required time is less the threshold time, and

the line-of-sight operation receiver is unable to receive the saving operation when the determination unit determines that the required time is less than the threshold time.

3 . The display control device according to claim 1 , wherein the information on the music being reproduced contains at least any one of information on a date at a time when the saving operation is received and information on a position of the vehicle at the time when the saving operation is received.

4 . A display control device comprising:

a positional information acquisition unit that acquires positional information representing a current position of a vehicle;

a route guide unit that acquires information on a guide point where the next leading guide is made from the current position of the vehicle on a route to a destination that the vehicle travels;

a determination unit that determines whether the current position of the vehicle is within an area of a given distance from the guide point;

a display controller that changes a display mode of a display screen based on a result of the determining by the determination unit; and

a line-of-sight receiver that receives an operation performed using a line of sight of a person on the display screen,

wherein the display mode includes a first mode in which music information on music that is being reproduced in the vehicle is displayed and a second mode that is different from the first mode and in which information other than the music information is displayed,

the line-of-sight operation receiver receives a saving operation of saving information on the music being reproduced using a line of sight in the first mode and causes a storage unit to store the saving information on the music that is being reproduced, and

the display controller makes a switch from the second mode to the first mode after the guide point is passed, and

the line-of-sight operation receiver saves the music being reproduced with a high priority when the line-of-sight operation receiver receives the saving operation within a threshold operation time after the switch from the second mode to the first mode is made.

5 . The display control device according to claim 4 , wherein the display controller makes a switch from the first mode to the second mode when the determination unit determines that the current position of the vehicle is within the area of the given distance from the guide point,

the line-of-sight operation receiver is unable to receive the saving operation when the determination unit determines that the current position of the vehicle is within the area of the given distance from the guide point.

6 . The display control device according to claim 4 , wherein the information on the music being reproduced contains at least any one of information on a date at a time when the saving operation is received and information on a position of the vehicle at the time when the saving operation is received.

7 . A display control method executed by a computer that operates as a display control device, the method comprising:

acquiring positional information representing a current position of a vehicle;

acquiring speed information representing a speed of the vehicle;

based on the positional information that is acquired by the acquiring the positional information and the speed information that is acquired by the acquiring the speed information, calculating a time required to travel from the current position of the vehicle to a guide point where the next leading guide is made on a route to a destination that the vehicle travels;

determining whether the required time that is calculated by the calculating is equal to or more than a threshold time;

changing a display mode of a display screen based on a result of the determining; and

receiving an operation performed using a line of sight of a person on board on the display screen,

wherein the display mode includes a first mode in which music information on music that is being reproduced in the vehicle is displayed and a second mode that is different from the first mode and in which information other than the music information is displayed,

the receiving includes receiving a saving operation of saving information on the music that is being reproduced using a line of sight in the first mode and causing a storage unit to store the saving information on the music that is being reproduced, and

the changing makes a switch from the second mode to the first mode after the guide point is passed, and

the receiving saves the music being reproduced with a high priority when the line-of-sight operation receiver receives the saving operation within a threshold operation time after the switch from the second mode to the first mode is made.