Communications: electrical – Land vehicle alarms or indicators – Of relative distance from an obstacle
Patent
1991-10-24
1993-05-25
Crosland, Donnie L.
Communications: electrical
Land vehicle alarms or indicators
Of relative distance from an obstacle
340436, 340901, 340903, 340939, 340555, 340942, 358105, 358125, 180169, 180167, 342 55, 342 66, 342 69, B60Q 100, G08G 116
Patent
active
052144089
ABSTRACT:
A distance detecting apparatus enables the driver of a vehicle to readily and concurrently recognize the location and direction of each of a plurality of objects present in the driver's field of view, in daylight or darkness, and at the same time determine whether each of the objects is an obstacle to the vehicle travel. The objects sensed by a pair of first and second image sensors 3, 4 are displayed on a screen 11 in a plurality of windows 15-19. Deviations between the images of the objects within the respective windows are electrically detected so that the distance to an object within each window is individually calculated based on the deviations. Obstacles to the travel of the vehicle can be discriminated on the basis of the positions of the windows on the screen and the distances to the objects in the respective windows as detected. Infrared light can be projected onto objects present within the fields of view of the image sensors when natural visible light is insufficient for the image sensors which, in this case, are sensitive to infrared light.
REFERENCES:
patent: 4539590 (1985-09-01), Gage
patent: 4709264 (1987-11-01), Tamura et al.
patent: 4779095 (1988-10-01), Guerreri
patent: 4908704 (1990-03-01), Fujioka et al.
patent: 5026153 (1991-06-01), Suzuki et al.
Crosland Donnie L.
Mitsubishi Denki & Kabushiki Kaisha
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