Image detection system for a car with adjustment for wiper image

• US 5,177,606 A
• Filed: 09/27/1991
• Issued: 01/05/1993
• Est. Priority Date: 09/28/1990
• Status: Expired due to Fees

• Current Assignee: Isuzu Motors Limited
• Original Assignee: Isuzu Motors Limited
• Inventors: Koshizawa, Toshifumi
• Primary Examiner(s): Kostak, Victor R.
• Application Number:
  US07/766,068
• Time in Patent Office: 466 Days
• Field of Search: 358/103, 358/108, 358/229, 358/93
• US Class Current: 348/118
• CPC Class Codes: B60S 1/08 electrically driven conjoint control of windscreen wiper motor and liquid supply of windscreen washer B60S1/482; conjoint control of windscreen wiper motor and means for cleaning parts o parts other than windscreens or front windows B60S1/56, B60S1/58, B60S1/606
• CPC Class Codes: H04N 7/18 Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast

Abstract

An image detection system for a car arranged such that only when the drive angle of a wiper of the car resides within a predetermined image pickup angle range or a predetermined image pickup angle range corrected according to the pan angle of a TV camera unit, a change-over switch is controlled to change over to the side of an image storage from which static image data are provided as outputs. Alternatively, it can be arranged such that a masking range the wiper crosses in all of the scanning lines, of an image in front of the wiper, perpendicular to the moving direction of the wiper is determined from a drive angle of the wiper and only the image of the scanning lines for the wiper is masked and substituted by blank data or static update data.

Claims

1. An image detection system for a car comprising:

means for driving a wiper;

means for detecting a drive angle of said driving means;

means for detecting an image in front of said wiper from the inside of the car and providing it as data output;

means for storing-updating the image data output from said image detecting means;

means for changing the output of said image detecting means over to the output of said storing-updating means;

means for controlling said change-over means to the side of said image storing-updating means only when said drive angle resides in a predetermined image pickup angle range of said image detecting means and for providing, as an output, static image data from said storing-updating means.

2. An image detection system for a car as claimed in claim 1, wherein said storing-updating means includes an image memory continuously updated by the data output of said imaged detecting means and an output image memory connected to one side of said change-over means and storing and providing as outputs the update image data of said image memory when said change-over means is changed over to the side of said image storage.

3. An image detection system for a car as claimed in claim 1, wherein said controlling means controls said change-over means to the side of sad image detecting means when said drive angle resides outside the predetermined image pickup angle range and for providing, as an output, dynamic image data from said image detecting means.

4. An image detection system for a car comprising

means for driving a wiper;

means for detecting a drive angle of said driving means;

means for detecting an image in front of said wiper from the inside of the car and providing it as data output;

means for panning said image detecting means up, down, right and left within a predetermined range and for providing, as an output, the pan angle;

means for storing-updating the image data output from said image detecting means;

means for changing the output of said image detection means over to the output of said storing-updating means; and

means for controlling said change-over means tot he side of said image storing-updating means only when said drive angle resides in a predetermined image pickup angle range of said image detecting means which is corrected in response to said drive angle and for providing as an output status image data from said storing-updating means.

5. An image detection system for a car as claimed in claim 4, wherein said storing-updating means includes an image memory continuously updated by the data output of said image detecting means and an output image memory connected to one side of said change-over means and storing and providing as outputs the update image data of said image memory when said change-over means is changed over to the side of said image storage.

6. An image detection system for a car as claimed in claim 4, wherein said controlling means controls said change-over means to the side of said image detecting means when said drive angle resides outside the predetermined image pickup angle range and for providing, as an output, dynamic image data from said image detection means.

7. An image detection system for a car comprising:

means for driving a wiper;

means for detecting a drive angle of said driving means;

means for detecting an image in front of said wiper, which is formed of scanning lines perpendicular to the moving direction of said wiper, from the inside of the car; and

,

image processing means for calculating, from said drive angle, a masking range said wiper crosses in all of the scanning lines of the image detected by said image detecting means and for masking only the image of the scanning lines in the masking range and providing, as outputs, blank data.

8. An image detection system for a car as claimed in claim 7, wherein said image processing means includes a buffer memory continuously updated by the output of said image detecting means for providing as outputs the updated data, and a frame memory continuously storing the update image data of said buffer memory and transferring the data therein corresponding to the masking range into said buffer memory only when said wiper crosses the masking range.

9. An image detection system for a car comprising:

means for driving a wiper;

means for detecting a drive angle of said driving means;

means for detecting an image in front of said wiper, which is formed of scanning lines perpendicular to the moving direction of said wiper, from the inside of the car; and

,

image processing means for calculating, from said drive angle, a masking range said wiper crosses in all of the scanning lines of the image detected by said image detecting means and for masking only the image of the scanning lines in the masking range and providing, as outputs, static image data just before masking.

10. An image detection system for a car as claimed in claim 9, wherein said image processing means includes a buffer memory continuously updated by the output of said image detecting means for providing as outputs the updated data, and a frame memory continuously storing the update image data of said buffer memory and transferring the data therein corresponding to the masking range into said buffer memory only when said wiper crosses the masking range.