Alpine INE-W957HD Owner's Manual (english) - Page 79

When there is a steep downward slope behind the, actual path of the car on the road surface.

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* Smear phenomenon: A phenomenon which occurs when a high-intensity spot (such as a reflection of the sunlight on a car body) is shot by the camera. The picture below is an example of 'vertical smear' common to CCD cameras. When there is a steep downward slope behind the car (example) A high-intensity spot Error between the screen and the actual road surface In the following conditions, errors are produced between the screen guidance and the actual road surface. (The illustrations represent a case when the camera is installed in the standard position.) When there is a steep upward slope behind the car (example) Error Error In the case of a downward slope behind the car, the distance guides are displayed farther from the rear bumper than the actual distance. If there is an obstacle on the downward slope, it seems closer than its actual position. Also, an error may occur between the guidance and the actual path of the car on the road surface. Distance guidance marks Actual distances Error Error The distance guidance mark represents the distance to a flat road surface. Therefore in the case of an upward slope behind the car, the distance guides are displayed closer to the rear bumper than the actual distance. For example, if there is an obstacle on the upward slope, it may appear farther away than its actual position. Also, an error may occur between the guidance and the actual path of the car on the road surface. 79-EN

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79
-EN
*
Smear phenomenon:
A phenomenon which occurs when a high-intensity spot (such
as a reflection of the sunlight on a car body) is shot by the
camera. The picture below is an example of ’vertical smear’
common to CCD cameras.
Error between the screen and the actual road surface
In the following conditions, errors are produced between the screen
guidance and the actual road surface. (The illustrations represent a case
when the camera is installed in the standard position.)
When there is a steep upward slope behind the car
(example)
<Screen>
<Situation of the car>
The distance guidance mark represents the distance to a
flat road surface. Therefore in the case of an upward
slope behind the car, the distance guides are displayed
closer to the rear bumper than the actual distance. For
example, if there is an obstacle on the upward slope, it
may appear farther away than its actual position.
Also, an error may occur between the guidance and the
actual path of the car on the road surface.
When there is a steep downward slope behind the
car (example)
<Screen>
<Situation of the car>
In the case of a downward slope behind the car, the
distance guides are displayed farther from the rear
bumper than the actual distance.
If there is an obstacle on the downward slope, it seems
closer than its actual position.
Also, an error may occur between the guidance and the
actual path of the car on the road surface.
A high-intensity spot
Distance guidance marks
Actual distances
Error Error
Error
Error