Electrical transmission or interconnection systems – Vehicle mounted systems – Automobile
Reexamination Certificate
2001-08-29
2003-03-18
Fleming, Fritz (Department: 2836)
Electrical transmission or interconnection systems
Vehicle mounted systems
Automobile
C701S045000
Reexamination Certificate
active
06534884
ABSTRACT:
BACKGROUND OF THE INVENTION
As a vehicle is being driven, there is certain information that the driver may require or desire to see while driving. The advancement of technology and consumer demands have resulted in more information being readily displayed on the instrument panel of the vehicle, which has further resulted in the instrument panel area of the vehicle interior cabin becoming cluttered with a variety of information displays. Therefore, the driver of the vehicle may confuse one display with another or may fail to notice a particular display because of this clutter and the limited time the driver has to glance at the displays. The time in which it takes for the driver to look downward to read one or more alphanumerical displays is critical since this corresponds to time that the driver is not looking forward toward where the vehicle is being driven. Concerns such as these are particularly critical for alpha numerical displays, such as digital speedometer displays, compass displays, and the like, where numbers and/or text are displayed to the driver, and which require a longer period of time for the driver to recognize and comprehend the display than glancing at a simple symbol or the like.
An interior rearview mirror is another appropriate location for placing information displays, since looking at the interior rearview mirror is an important part of driving a vehicle. Samples of rearview mirrors incorporating information displays are disclosed in commonly assigned U.S. Pat. No. 5,416,313, issued to Larson et al., which describes a compass display incorporated into a mirror reflector, and which is hereby incorporated herein by reference. However, incorporation of a display within the mirror reflector of the rearview mirror requires that the mirror reflective area be reduced to provide room for the display, thereby decreasing the field of vision of the driver rearwardly of the vehicle. Consequently, other displays have been placed on the mirror case chin or eyebrow, so as to avoid reducing the size of the mirror reflective surface. An example is shown in commonly assigned U.S. Pat. Des. 391,214, issued to Hook et al., which shows a display positioned adjacent the lower edge of the interior mirror case, and which is hereby incorporated by reference herein. However, the use of such displays may substantially increase the size of the mirror case itself, thereby potentially restricting the driver's forward field of view.
Another concern with displays being positioned on the instrument panel or on or around the rearview mirror is that it is difficult for a driver's eyes to adjust quickly to focus on the displays, as they are in close proximity to the driver relative to the forward viewing through the windshield. When these displays are positioned in close proximity to the driver, the driver's eyes have to adjust from a long focal length, when looking forward in the direction of travel or rearward via the rear view mirror, to a short focal length as the driver looks at the instrument panel or the rear view mirror or mirror housing. This not only requires additional time for the eyes to adjust, but also may become annoying to the driver as this process may be repeated multiple times during even a short trip.
In an effort to remove certain displays from the instrument panel and further make them easier for the driver of the vehicle to see and recognize them, heads up displays and other forward projecting displays have been implemented to project a virtual image display that the driver may easily glance at to read the information being communicated thereby. However, while providing the driver with the information in an optically beneficial manner, these displays may interfere with the forward field of view of the driver as the vehicle is driven down the road and are also much more costly to manufacture and implement than conventional displays positioned within the vehicle cabin area.
Therefore, there is a need in the art to provide a display in a manner that maximizes both forward and rearward fields of view, and that is economical and commercially attractive to implement. The display must be positioned in an area where a driver may quickly and easily glance at the display to read the information being communicated thereby.
SUMMARY OF THE INVENTION
The present invention is intended to provide a display system for a vehicle that maximizes both the forward and rearward fields of view, while being viewable in an area forward of the driver so as to be easily viewed by the driver while driving the vehicle.
According to a first aspect to the invention, a display system for a vehicle comprises a display, which is located on the vehicle rearward of the driver and is a reverse image display of the signal or information to be received by the driver. A rearview mirror is included such that the display is viewable as a mirror image in reverse order by the vehicle driver in the rearview mirror.
According to another aspect of the invention, the display may be positioned around the perimeter of a rear window of the vehicle, so as not to interfere with the rearward field of view of the driver, while still being easily viewed and readable via the rearview mirror.
According to still yet another aspect of the invention, a control may be included which actuates the display in response to an electronic input. The control may also vary the intensity, color and/or frequency of the display, and/or an auxiliary light or display, depending on the input received by the control.
These and other objects, advantages, purposes and features of this invention will become apparent upon review of the following specification in conjunction with the drawings.
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Commonly assigned U.S. patent application, Ser. No. 09/660,712, filed Sep. 13, 2000 for Information Display for Vehicles.
SAE Technical Paper Series 96C011—A comparison of Two Product Development Approaches: Seamless Electro-Mechanical Design and Mnemonic Design with Representative Products (Mirror/Display and Rearward Display Accessible by Rearview Mirror), by Betty Lou McClanahan et al. (Convergence 96 International Congress on Transportation Electronics, Dearborn, Michigan, Oct. 21-23, 1996).
SAE Technical Paper Series 98C063—Information Bias in the Passenger Vehicle: Correcting to Aid the Vehicle Control Task, by Betty Lou McClanahan, MIT; (Convergence 98 International Congress on Transportation Electronics, Dearborn, Michigan, Oct. 19-21, 1998).
Rear Speed Display: A Mnemonic Device to Improve Driver Situational Awareness, by Betty Lou McClanahan, MIT Racing Team; Stephen J. Buckley, Chrysler Corporation; and Jason Holehouse and R.B. Stiewing, Skip Barber Racing School; Proceedings, ISATA 97, Jun. 1997; 7SAF039.
Lynam Niall R.
Marcus Konrad H.
Donnelly Corporation
Fleming Fritz
Rodriguez Calixto
Van Dyke Gardner, Linn & Burkhart, LLP
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