Electronic apparatus and navigation method

An electronic apparatus characterized by comprising:

• a display unit;
• map display means for displaying a map on the display unit;
• scale setting means for setting a scale of the map displayed on the display unit;
• position information acquisition means for sequentially acquiring position information representing a position of a subject, at a predetermined frequency;
• display point selecting means for selecting a display point suitable for display in accordance with the set scale, from a time series of the sequentially acquired positions;
• and
• path display means for plotting the selected display point on the displayed map and displaying a movement path of the subject,
• wherein the scale setting means determines a movement speed of the subject from the sequentially acquired position information and sets the scale in accordance with the movement speed.

An electronic apparatus characterized by comprising:

• a display unit;
• map display means for displaying a map on the display unit;
• scale setting means for setting a scale of the map displayed on the display unit;
• position information acquisition means for sequentially acquiring position information representing a position of a subject, at a predetermined frequency;
• display point selecting means for selecting a display point suitable for display in accordance with the set scale, from a time series of the sequentially acquired positions;
• and
• path display means for plotting the selected display point on the displayed map and displaying a movement path of the subject,
• wherein the map display means adjusts a display scrolling speed for the map on the display unit in accordance with a movement speed of the subject determined from the sequentially acquired position information, and thereby prevents a progression of the movement path appearing on the map from going out of a screen of the display unit.

An electronic apparatus characterized by comprising:

• a display unit;
• map display means for displaying a map on the display unit;
• scale setting means for setting a scale of the map displayed on the display unit;
• position information acquisition means for sequentially acquiring position information representing a position of a subject, at a predetermined frequency;
• display point selecting means for selecting a display point suitable for display in accordance with the set scale, from a time series of the sequentially acquired positions;
• path display means for plotting the selected display point on the displayed map and displaying a movement path of the subject;
• image data acquisition means for acquiring image data;
• and
• image display means for displaying the acquired image data on the display unit,
• wherein the image data acquired by the image data acquisition means includes data regarding a moving image shot during movement, data representing a shooting position of the moving image, and data representing a shooting time of the moving image,
• wherein the image display means supplies, to the display unit, the data regarding the moving image of a corresponding shooting position in accordance with a progression of the display point, and thereby displays, with the map as a background, the moving image thereon, and
• wherein the path display means synchronizes, in accordance with the data regarding the shooting time, the progression of the movement path with a progression of the moving image display.

A navigation method characterized by comprising:

• a map display step of displaying a map on a display panel;
• a scale setting step of setting a scale of the map displayed on the display panel;
• a position information acquisition step of sequentially acquiring position information representing a position of a subject, at a predetermined frequency;
• a display point selecting step of selecting a display point suitable for display in accordance with the set scale, from a time series of the sequentially acquired positions;
• and
• a path display step of plotting the selected display point on the displayed map and displaying a movement path of the subject,
• wherein the display point selecting step includes
• a first display point selecting step of selecting a first display point from the time series of the sequentially acquired positions,
• a minimum distance setting step of setting a minimum distance limit in accordance with the set scale,
• a distance calculating step of calculating a distance from a position corresponding to the first display point as an origin to successively acquired positions subsequent thereto, and
• a second display point selecting step of selecting a position, as a second display point, corresponding to a case where the successively calculated distance exceeds the set minimum distance limit, and
• wherein the display point selecting step updates the first display point in accordance with the position corresponding to the selected second display point, and further determines a new second display point by using the updated first display point as an origin.

A navigation method characterized by comprising:

• a map display step of displaying a map on a display panel;
• a scale setting step of setting a scale of the map displayed on the display panel;
• a position information acquisition step of sequentially acquiring position information representing a position of a subject, at a predetermined frequency;
• a display point selecting step of selecting a display point suitable for display in accordance with the set scale, from a time series of the sequentially acquired positions;
• and
• a path display step of plotting the selected display point on the displayed map and displaying a movement path of the subject,
• wherein the scale setting step determines a movement speed of the subject from the sequentially acquired position information and sets the scale in accordance with the movement speed.

A navigation method characterized by comprising:

• a map display step of displaying a map on a display panel;
• a scale setting step of setting a scale of the map displayed on the display panel;
• a position information acquisition step of sequentially acquiring position information representing a position of a subject, at a predetermined frequency;
• a display point selecting step of selecting a display point suitable for display in accordance with the set scale, from a time series of the sequentially acquired positions;
• and
• a path display step of plotting the selected display point on the displayed map and displaying a movement path of the subject,
• wherein the map display step adjusts a display scrolling speed for the map on the display panel in accordance with a movement speed of the subject determined from the sequentially acquired position information, and thereby prevents a progression of the movement path appearing on the map from going out of a screen of the display panel.

A navigation method characterized by comprising:

• a map display step of displaying a map on a display panel;
• a scale setting step of setting a scale of the map displayed on the display panel;
• a position information acquisition step of sequentially acquiring position information representing a position of a subject, at a predetermined frequency;
• a display point selecting step of selecting a display point suitable for display in accordance with the set scale, from a time series of the sequentially acquired positions;
• a path display step of plotting the selected display point on the displayed map and displaying a movement path of the subject;
• an image data acquisition step of acquiring image data including data regarding a moving image shot during movement, data representing a shooting position of the moving image, and data representing a shooting time of the moving image;
• and
• an image display step of displaying the moving image included in the acquired image data on the display panel,
• wherein the image display step supplies, to the display panel, the data regarding the moving image of a corresponding shooting position in accordance with a progression of the display point, and thereby displays, with the map as a background, the moving image thereon, and
• wherein the path display step synchronizes, in accordance with the data regarding the shooting time included in the image data, the progression of the movement path with a progression of the moving image display.