Yazaki Corporation

Kazutomo Fujinami

Naoto Ishikawa

Keiki Okamoto

Kazuyuki Sasaki

Hiroshi Miyamoto

Kunihiko Yamada

You Yanagida

Takeyuki Amari

Ryohei Nishizaki

Toshiaki Ozaki

Kouichi Yamamoto

A detection device includes a switch unit, the switch unit performs switching to a gain reduction state in which a gain of a loop antenna is reduced or a gain non-reduction state in which the gain of the loop antenna is not reduced in correspondence with a state of a detection target. When a wavelength of an electric wave is set as &#x3bb;, the switch unit includes switch terminals for reducing the gain of the loop antenna within a range K1 on the loop antenna from a first circuit terminal to a position that is spaced away from the first circuit terminal by &#x3bb;/8. In addition, the switch unit includes switch terminals for reducing the gain of the loop antenna within a range on the loop antenna from a second circuit terminal to a position that is spaced away from the second circuit terminal by &#x3bb;/8.

Detection device and detection system

A vehicle-applied rear-and-side monitory system including an image taking means for taking an image of a rear-and-side view of the subject vehicle traveling in a lane; a characteristic point extracting device for extracting at least one point as a characteristic point from an image of a following vehicle contained in a first image, taken at a first time-point, of the rear-and-side view, the following vehicle traveling at the rear of the subject vehicle in the lane of the subject vehicle or in a neighboring lane; a corresponding point detecting device for detecting a corresponding point, corresponding to the characteristic point, in a second image taken at a second time-point following the first time-point; an optical flow forming device for forming an optical flow of the characteristic point of the following vehicle from a vector connecting the characteristic point and the corresponding point; and a dead angle area located vehicles-distance calculating device for calculating at least any one of a vehicles-distance between the subject vehicle and the following vehicle and a relative position therebetween after a time-point of disappearance of the optical flow outside an image plane of the image taking device on the basis of the optical flow formed just before the disappearance. Thus, a vehicle-applied rear-and-side monitoring system capable of monitoring an approaching degree of a following vehicle approaching from the rear of the subject vehicle in the lane of the subject vehicle in the neighboring lane can be realized.

Vehicle-applied rear-and-side monitoring system

In an environment monitoring system for a vehicle, when a detecting means decides that an approaching vehicle cannot be detected by an image processing means, a waning means gives warning of this fact. Thus, the environment monitoring system permits one's own vehicle to run with safety even when the approaching vehicle cannot be detected.

Environment monitoring system for a vehicle with an image pickup device

In a rear monitoring system for a vehicle, the information on the road on which one's own vehicle has run is acquired. On the basis of the information thus acquired, the white lines on a rear road image which distinguish one's own lane from both adjacent lanes are estimated. Using the white lines thus estimated, it is decided whether another detected vehicle is located on one's own lane or adjacent lanes.

Rear monitoring system

A vehicle-applied rear-and-side monitoring system wherein a monitoring area is set inside or outside an area enclosed with lines connecting two lane marking positions, where two lane markings on both sides of a preceding vehicle running lane in the road image cross a periphery of the road image, to an infinity point in the road image, which infinity point corresponding to a detected rudder angle. Further, a vehicle-applied rear-and-side monitoring and alarming system which a alarms a drives when the following vehicle was detected as a result of monitoring a rear-and-side road view by was of the vehicle-applied rear-and-side monitoring system.

Vehicle-applied rear-and-side monitoring system and vehicle-applied rear-and-side monitoring and alarming system

In a rear monitoring apparatus for a vehicle, a prism (,) enlarges the lower portion of the range which can be picked up by a camera (,), and a usage means uses the lower portion. In this configuration, the image in the vicinity of one's own vehicle can be picked up without impeding the detection of the optical flows generated from another vehicle approaching from a far distance, and can be used for the purpose different from the detection of the optical flows.

Rear monitoring system for vehicle

A rear-view monitor for use in vehicles is provided, in which contained are vehicle-mounted image pickup means for picking up images of road in the rear of one's own vehicle at every fixed time; and detection means for detecting an overtaking vehicle by processing road images obtained by the image pickup means. The monitor keeps monitoring of relative movement between one's own vehicle and the overtaking vehicle detected by the detection means. The monitor is characterized in that the image pickup means contain a wide-angle high resolution camera, and the detection means include: first image processing means for processing the whole road images obtained by the image pickup means by sampling image data; second image processing means for processing a part of road images obtained by the image pickup means without sampling image data; and selection means for selecting either the first image processing means or the second image processing means in response to a situation of traffic. Thus, a rear-view monitor for use in vehicles according to the present invention enables monitoring over a wide range, i.e. the far and near distances, under preferable conditions.

Rear-view monitor for use in vehicles

A motor vehicle peripheral monitoring apparatus uses a monitor region extension member as optical image forming means. The monitor region extension member comprises an upper image passage part and an upper image compression part. The upper image passage part includes a prism structural element of substantially a semi-conical shape whose prism apical angles become the maximum angle at the center of the member and are decreased toward the extremity from the center of the member. The upper image compression part includes a cylindrical structural element having a curved surface whose angles are set to be smaller continuously from the prism apical angles of the upper image passage part.

Monitor region extension member and motor vehicle peripheral monitoring

A monitoring apparatus for monitoring the periphery of a motor vehicle in which patterns painted on the surface of a road are eliminated to shorten a time required for calculation to determine a position of a subject by processing image data generated by two cameras, whereby image data of the object having a height is derived by subtracting image data generated one camera from image data generating by the other camera after transferring either of image data to the other image coordinate by assuming that the transferring image data have a height of zero (0) for canceling road surface images and sounding an alarm whenever it is determined that the position of the object causes an obstacle of the moving vehicle.

Growing community of inventors

Shizuoka, Japan

Kazutomo Fujinami