Car navigation device using forward real video and control method thereof

• US 20050182564A1
• Filed: 05/07/2004
• Published: 08/18/2005
• Est. Priority Date: 02/13/2004
• Status: Active Grant

• Current Assignee: Digital Video Systems Incorporated, Illumination Developments Limited
• Original Assignee: Digital Video Systems Incorporated
• Inventors: Kim, Seung-II
• Granted Patent: US 7,353,110 B2
• Time in Patent Office: Days
• US Class Current: 701/211
• CPC Class Codes: G01C 21/3644 Landmark guidance, e.g. using POIs or conspicuous other objects
• CPC Class Codes: G01C 21/3647 Guidance involving output of stored or live camera images or video streams
• CPC Class Codes: G01C 21/3679 Retrieval, searching and output of POI information, e.g. hotels, restaurants, shops, filling stations, parking facilities G01C21/3611 takes precedence

Abstract

A car navigation device using a forward real video and a control method thereof are disclosed. The car navigation device using a forward real video along the travel direction of a vehicle, comprises a camera that photographs the forward real video and outputs the photographed video on a screen, a GPS receiver that receives current position information of the vehicle from a satellite, and a navigation main module that receives the current position information of the vehicle from the GPS receiver, obtains more accurate current position information through calibration using a speed sensor and a gyro, extracts TBT information based on the obtained accurate current position information and user'"'"'s set destination point information by a general method, and overlays the TBT information on the screen containing the forward real video along the direction of a destination point.

Claims

1. A car navigation device using a forward real video along the travel direction of a vehicle, comprising:

a camera that photographs the forward real video and outputs the photographed video on a screen;

a GPS receiver that receives current position information of the vehicle from a satellite; and

a navigation main module that receives the current position information of the vehicle from the GPS receiver, obtains more accurate current position information through calibration using a speed sensor and a gyro, extracts TBT information based on the obtained accurate current position information and user'"'"'s set destination point information by a general method, and overlays the TBT information on the screen containing the forward real video along the direction of a destination point.

2. The car navigation device of claim 1, wherein the navigation main module receives the current position information of the vehicle from the GPS receiver, obtains more accurate current position information through calibration using a speed sensor and a gyro, extracts TBT information based on the obtained accurate current position information and user'"'"'s set destination point information by a general method, divides the TBT information with respect to the forward real video by traffic lane, and overlays the divided TBT information at locations divided by traffic lane on the screen containing the forward real video along the direction of a destination point.

3. The car navigation device of claim 2, wherein the navigation main module comprises:

a navigation processor that receives the current position information of the vehicle from the GPS receiver, obtains more accurate current position information through calibration using a speed sensor and a gyro, extracts TBT information based on the obtained accurate current position information and user'"'"'s set destination point information; and

a video overlay portion that overlays the TBT information at position on the screen containing the forward real video along the direction of the destination point.

4. The car navigation device of claim 3, wherein the navigation main module further comprises a POI information generator that extracts position information of a destination building from the screen and outputs the same as POI information, and wherein the video overlay portion overlays the POI information output from the POI information generator on a location on the forward real video corresponding to the position of the destination building, to then be displayed.

5. The car navigation device of claim 4, further comprising:

a video compressor that compresses the photographed video supplied from the camera during travel; and

a video storage unit that stores compressed video data.

6. The car navigation device of claim 1, further comprising:

a map storage unit that stores graphic map information;

a map overlay portion that overlays the current position information of the vehicle supplied from the GPS receiver on the graphic map information; and

a screen switch that switches screens upon user'"'"'s optional setting as to whether only the video overlaid by the video overlay portion is to be displayed, or the video overlaid by the map overlay portion is to be displayed together with the video overlaid by the video overlay portion.

7. The car navigation device of claim 1, wherein the camera and the GPS receiver are integrally formed.

8. A control method of a car navigation device using a forward real video, comprising the steps of:

(a) photographing a forward real video along the travel direction of a vehicle and outputting the photographed video;

(b) receiving current position information of the vehicle from a satellite; and

(c) receiving the current position information of the vehicle from the GPS receiver, obtaining more accurate current position information through calibration using a speed sensor and a gyro, extracting TBT information based on the obtained accurate current position information and user'"'"'s set destination point information by a general method, and overlaying the TBT information on the screen containing the forward real video along the direction of a destination point; and

(d) dividing the TBT information with respect to the forward real video by traffic lane, and overlaying the divided TBT information at locations divided by traffic lane on the screen containing the forward real video along the direction of a destination point.

9. The control method of claim 8, further comprising (e) extracting position information about a destination building from the screen, which is optionally set by a user, outputting the same as POI information, and overlaying the POI information output from the POI information generator on a location on the forward real video corresponding to the position of the destination building.