IN-VEHICLE DEVICE FOR RECORDING MOVING IMAGE DATA

• US 20110057783A1
• Filed: 11/16/2010
• Published: 03/10/2011
• Est. Priority Date: 06/20/2008
• Status: Active Grant

• Current Assignee: Socionext Inc.
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Tanji, Miho, YAGI, Yoriko, Nakahashi, Junichi
• Granted Patent: US 8,830,046 B2
• Time in Patent Office: Days
• US Class Current: 340/436
• CPC Class Codes: B60R 1/27 providing all-round vision, e.g. using omnidirectional cameras
• CPC Class Codes: B60R 2300/105 using multiple cameras
• CPC Class Codes: B60R 2300/303 using joined images, e.g. multiple camera images
• CPC Class Codes: G07C 5/085 using electronic data carriers
• CPC Class Codes: G07C 5/0866 the electronic data carrier being a digital video recorder in combination with video camera
• CPC Class Codes: G07C 5/0891 Video recorder in combination with video camera
• CPC Class Codes: G08G 1/16 Anti-collision systems road vehicle drive control systems for predicting or avoiding probable or impending collision otherwise than by control of a particular sub-unit B60W30/08
• CPC Class Codes: G08G 1/166 for active traffic, e.g. moving vehicles, pedestrians, bikes
• CPC Class Codes: H04N 23/63 by using electronic viewfinders
• CPC Class Codes: H04N 23/661 Transmitting camera control signals through networks, e.g. control via the Internet
• CPC Class Codes: H04N 5/772 the recording apparatus and the television camera being placed in the same enclosure
• CPC Class Codes: H04N 9/7921 for more than one processing mode
• CPC Class Codes: H04N 9/8047 using transform coding

Abstract

A normal image quality coding unit generates normal-quality compressed moving image data by compressing moving image data generated by capturing an image around a vehicle with a normal image quality. A high image quality coding unit generates high-quality compressed moving image data by compressing the moving image data with an image quality higher than the normal image quality. The normal-quality compressed moving image data is recorded in a normal image quality data storage unit. A trigger detection unit detects an abnormal condition which possibly happens to the vehicle currently travelling. A high image quality data storage unit records therein the high-quality compressed moving image data based on a timing by which the abnormal condition is detected by the trigger detection unit.

Claims

1. An in-vehicle moving image data recording apparatus mounted in a vehicle, comprising:

a normal image quality coding unit for compressing moving image data generated from images of surroundings of the vehicle captured by a camera unit mounted in the vehicle with a normal image quality to generate a normal-quality compressed moving image data;

a high image quality coding unit for compressing the moving image data with an image quality higher than the normal image quality to generate a high-quality compressed moving image data;

a normal image quality data storage unit for recording therein the normal-quality compressed moving image data;

a trigger detecting unit for detecting an abnormal condition which possibly happens to the vehicle currently travelling; and

a high image quality data storage unit for recording therein the high-quality compressed moving image data based on a timing by which the abnormal condition is detected by the trigger detecting unit.

2. The in-vehicle moving image data recording apparatus as claimed in claim 1, further including the camera unit.

3. The in-vehicle moving image data recording apparatus as claimed in claim 1, wherein the high image quality data storage unit records all of the high-quality compressed moving image data from a time point earlier by a given period of time than the detection timing onwards.

4. The in-vehicle moving image data recording apparatus as claimed in claim 3, wherein

the high image quality coding unit can constantly generate the high-quality compressed moving image data and supply the generated high-quality compressed moving image data to the high image quality data storage unit,

the high image quality data storage unit overwrites the high-quality compressed moving image data initially stored in a storage capacity of the storage unit with the high-quality compressed moving image data most recently inputted to the storage unit beyond the storage capacity, and

the high image quality data storage unit does not delete the high-quality compressed moving image data by overwriting but stores the high-quality compressed moving image data from the time point earlier by the given period of time than the detection timing onwards.

5. The in-vehicle moving image data recording apparatus as claimed in claim 2, wherein the camera unit includes a plurality of camera units which respectively capture images in different directions from the vehicle,

the high image quality coding unit compresses a plurality of the moving image data generated by the plurality of camera units with the high image quality to generate a plurality of the high-quality compressed moving image data, and

the high image quality data storage unit records therein the plurality of the high-quality compressed moving image data based on the detection timing.

6. The in-vehicle moving image data recording apparatus as claimed in claim 5, wherein

the trigger detecting unit can recognize a direction of occurrence of the abnormal condition, and

when the trigger detecting unit detects the abnormal condition, the high image quality data storage unit selectively records therein the moving image data obtained by any of the camera units which can photograph the images of the surroundings in the direction of occurrence of the abnormal condition.

7. The in-vehicle moving image data recording apparatus as claimed in claim 1, further comprising:

a number plate detecting unit for detecting a number plate image region including a number plate of another vehicle running near the vehicle in the moving image data; and

an acceleration sensor unit for sensing an acceleration of the vehicle, wherein

the number plate detecting unit performs motion prediction of the number plate based on the acceleration sensed by the acceleration sensor unit to detect the number plate image region based on the motion prediction, and

the high image quality coding compresses the number plate image region with an image quality higher than the normal image quality to generate a high-quality compressed number plate image region as the high-quality compressed moving image data.

8. The in-vehicle moving image data recording apparatus as claimed in claim 1, further comprising a danger forewarning unit which issues a warning to a driver of the vehicle depending on the abnormal condition detected by the trigger detecting unit.

9. The in-vehicle moving image data recording apparatus as claimed in claim 1, further comprising a captured image display unit which displays the moving image data on a display screen.

10. The in-vehicle moving image data recording apparatus as claimed in claim 1, wherein the trigger detecting unit detects at least one of;

another vehicle in too proximity, walking person in too proximity, sudden braking, and physical impact on the vehicle as the abnormal condition.

11. The in-vehicle moving image data recording apparatus as claimed in claim 1, wherein the trigger detecting further includes:

a detection sensor provided on one side end of a road where the vehicle is travelling to detect the abnormal condition which possibly happens to the vehicle travelling on the road and transmit a wireless signal; and

a reception apparatus provided in the vehicle to receive the wireless signal.

12. The in-vehicle moving image data recording apparatus as claimed in claim 1, wherein at least one of image codec, angle of view, frame rate, and bit rate is set to have an image quality higher than the normal-quality compressed moving image data in the high-quality compressed moving image data.

13. An in-vehicle moving image data recording apparatus mounted in a vehicle, comprising:

a normal image quality coding unit for compressing moving image data generated from images of surroundings of the vehicle captured by a camera unit mounted in the vehicle with a normal image quality to generate a normal-quality compressed moving image data;

a high image quality coding unit for compressing the moving image data with an image quality higher than the normal image quality to generate a high-quality compressed moving image data;

a normal image quality data storage unit for recording therein the normal-quality compressed moving image data;

a trigger detecting unit for detecting an abnormal condition which possibly happens to the vehicle currently travelling;

a high image quality data storage unit for recording therein the high-quality compressed moving image data based on a timing by which the abnormal condition is detected by the trigger detecting unit;

a number plate detecting unit for detecting a number plate image region including a number plate of another vehicle running near the vehicle in the moving image data; and

an acceleration sensor unit for sensing an acceleration of the vehicle, wherein

the number plate detecting unit performs motion prediction of the number plate based on the acceleration sensed by the acceleration sensor unit to detect the number plate image region based on the motion prediction, and

the high image quality coding compresses the number plate image region with an image quality higher than the normal image quality to generate a high-quality compressed number plate image region as the high-quality compressed moving image data.

14. An in-vehicle moving image data recording apparatus mounted in a vehicle, comprising:

a normal image quality coding unit for compressing moving image data generated from images of surroundings of the vehicle captured by a camera unit mounted in the vehicle with a normal image quality to generate a normal-quality compressed moving image data;

a high image quality coding unit for compressing the moving image data with an image quality higher than the normal image quality to generate a high-quality compressed moving image data;

a normal image quality data storage unit for recording therein the normal-quality compressed moving image data;

a trigger detecting unit for detecting an abnormal condition which possibly happens to the vehicle currently travelling;

a high image quality data storage unit for recording therein the high-quality compressed moving image data based on a timing by which the abnormal condition is detected by the trigger detecting unit; and

a danger forewarning unit which issues a warning to a driver of the vehicle depending on the abnormal condition detected by the trigger detecting unit.

15. An in-vehicle moving image data recording apparatus mounted in a vehicle, comprising:

a normal image quality coding unit for compressing moving image data generated from images of surroundings of the vehicle captured by a camera unit mounted in the vehicle with a normal image quality to generate a normal-quality compressed moving image data;

a high image quality coding unit for compressing the moving image data with an image quality higher than the normal image quality to generate a high-quality compressed moving image data;

a normal image quality data storage unit for recording therein the normal-quality compressed moving image data;

a trigger detecting unit for detecting an abnormal condition which possibly happens to the vehicle currently travelling;

a high image quality data storage unit for recording therein the high-quality compressed moving image data based on a timing by which the abnormal condition is detected by the trigger detecting unit; and

a captured image display unit which displays the moving image data on a display screen.