Abstract:
An intra-vehicle communication system includes a surface configured to be mounted to a vehicle interior proximate a first occupant wherein the surface is further configured to display an image of a second occupant of the vehicle. The system further includes an intercom including a microphone supported in close proximity with the surface and a speaker operably coupled to the microphone. In one embodiment, the intercom is further configured to at least partially mute existing audio output from a stereo system.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     The present application is a divisional application claiming priority under 35 U.S.C. § 120 from co-pending U.S. patent application Ser. No. 09/132,333 filed on Aug. 12, 1998 by Steven P. Dykstra and entitled CONVERSATION MIRROR/INTERCOM, the full disclosure of which is incorporated by reference. 
    
    
     BACKGROUND OF THE INVENTION 
     The present invention relates to a vehicle interior accessory comprising an interior mirror and particularly to an intercom system associated with such a mirror. 
     With the ever increasing popularity of mini vans and sport utility vehicles, which frequently have multiple rows of seats, the ability to effectively communicate between the front and rear seat passengers and, in the case of families, the vehicle operator and children in the rear seat area has become problematical. U.S. Pat. No. 4,934,802 discloses a small, centrally located, convexly curved conversation mirror which allows the vehicle operator to establish eye contact with rear seat areas without the need to move or use the rearview mirror employed for monitoring traffic conditions. When the radio is playing and the like, for example, however, although visual contact may be established, it still is difficult to communicate verbally, particularly with children who may not be attentive. Accordingly, there exists a need for a system by which visual and verbal communication between front seat occupants and mid or rear seat occupants can be effectively established. 
     SUMMARY OF THE INVENTION 
     According to one aspect of the present invention, a conversation mirror/intercom for a vehicle includes a vehicle accessory configured to mount to the roof area of a vehicle near a forward vehicle occupant, a conversation mirror coupled to the accessory and an intercom. The conversation mirror is configured to provide visual contact between the forward vehicle occupant and a rearward vehicle occupant. The intercom includes a microphone supported in close proximity with the conversation mirror and a speaker operably coupled to the microphone. The intercom provides verbal communication between the forward vehicle occupant and the rearward vehicle occupant. 
     According to another aspect of the present invention, an intra-vehicle communication system includes a surface configured to be mounted to a vehicle interior proximate a first occupant wherein the surface is further configured to display an image of a second occupant of the vehicle. The system further includes an intercom including a microphone supported in close proximity with the surface and a speaker operably coupled to the microphone. 
     According to another aspect of the present invention, a method for a first vehicle occupant to communicate with a second vehicle occupant is disclosed. The method involves viewing the second vehicle occupant while not facing the second vehicle occupant, speaking into a microphone of an intercom having a speaker proximate the second vehicle occupant during the viewing and muting existing audio output from a stereo system while speaking into the microphone. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a fragmentary front elevational view of a vehicle including a conversation mirror/intercom embodying the present invention and shown in a use position; 
     FIG. 2 is a partly broken-away left-side elevational view of the conversation mirror shown in FIG. 1, showing its stored position in phantom form; and 
     FIG. 3 is an electrical circuit diagram in schematic form of the intercom circuit for the mirror system of the present invention, showing pictorially the location of the transducers in a typical vehicle. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring initially to FIG. 1, there is shown a vehicle  10 , such as a mini van, sports utility vehicle or other passenger carrying vehicle which has a front seat area including an operator seat and a rear seating area spaced therefrom for carrying passengers. Typically, a van may include three rows of seats. The system of the present invention is particularly advantageous for communicating with second and third row seated passengers. In FIGS. 1 and 2, the vehicle  10  includes an overhead console  12  typically mounted to the sheet metal roof  13  (shown schematically in FIG. 2) of the vehicle behind windshield  11  and including a variety of accessories such as sunglass storage compartments, garage door opening transmitters, and overhead electronics such as an electronic compass or the like. Pivotally mounted to the console  12  is a conversation mirror/intercom system  20  of the present invention, which includes a mirror frame  22  pivotally mounted to the console by means of a pivot axle  24  extending between the console  12  and mirror frame  22  and provided with a torque fitting for holding the mirror frame and a convex conversation mirror  26  therein in a stored position, shown in phantom in FIG. 2, or in a selected lowered use position, such as illustrated in FIGS. 1 and 2. Although in the preferred embodiment the mirror frame  22  is pivotally mounted to the console  12 , other movable mounting structure, such as a slide-out mount, could also be employed. Mirror  26  is conventionally mounted within the frame and can have a shape as described in the above-identified U.S. Pat. No. 4,934,802, the disclosure of which is incorporated herein by reference. Mirror  26  is preferably convex to provide a relatively unobtrusive and yet effective mirror for allowing the driver to visually establish eye contact with mid and/or rear seat passengers. 
     Mirror frame  22  can be made of a suitable polymeric material used in the automotive environment and has sufficient space therein to receive and house at least part of the electronic circuit  30  shown in FIG. 3, including a microphone  32  mounted in the mirror frame in a location where verbal communications from the vehicle operator can clearly be picked up by the microphone  32 . Thus, in a preferred embodiment of the invention, the microphone is located in the lower left corner of the mirror frame  22  so that, when the vehicle operator speaks, the voice is picked up by the microphone for subsequent signal processing. The mirror frame may pivot between a stored position, shown in phantom in FIG. 2, within the vehicle console  12  to the lowered use position, as shown in solid lines in FIG.  2  and in FIG. 1, for use. The pivot axle and torque fitting can be of the type used, for example, in vanity mirror covers or pivoted mirrors such as those disclosed in U.S. Pat. Nos. 5,004,289; 5,039,153; or 4,824,159. An electrical switch  34  is positioned between the mirror frame  22  and console  12  to be actuated by movement of the mirror frame  22  to a use position for applying electrical operating power to the electrical circuit  30 , shown in detail in FIG. 3, for activating the intercom circuit for establishing voice communications. The intercom circuit is now described in greater detail in connection with FIG.  3 . 
     In FIG. 3, the vehicle  10  includes an intercom circuit  30  in an overhead console located near the windshield  11 , as seen in FIG.  2 . The remaining transducers ( 37 ,  42 ), as described below are located in the mid and/or rear seat areas  15  of the vehicle, as shown pictorially in FIG.  3 . Intercom circuit  30  includes the microphone  32  which is coupled to an audio amplifier  33  having an input coupled to microphone  32  and an output coupled to a speaker  37  positioned remotely by means of conductors  35  such that the speaker  37  can be positioned remotely and adjacent the rear seat passenger area of a vehicle, such as a van, sport utility vehicle or the like. Thus, speaker  37  may be located in the headliner of the vehicle utilizing a mounting system such as disclosed in U.S. Pat. No. 5,754,664. Amplifier  33  is powered by the vehicle power supply system identified as +V in FIG.  3  through switch  34  such that, when the mirror frame  22  is moved from a stored position to a use position, switch  34  is closed, providing operator power for the amplifier  33 . The switch closure  34  may also provide a logic “1” output signal at an output terminal A in FIG. 3, which can be employed by a logic circuit for muting an existing radio or stereo system output, such that verbal communication can be more effectively established. Switch closure  34  also may provide operating power through a conductor  39  to an amplifier  40  associated with the rear seat passenger area and having a microphone  42  located in the rear seat area  15  for picking up voice communications from rear seat passengers which, in turn, is amplified by amplifier  40  and applied by conductors  43  to a speaker  45  which is mounted within the mirror  22 , as shown in FIG.  1 . 
     In some embodiments, circuit  30  may include two-way amplifiers and signal handling circuits which allow the microphone  32  and speaker  37  to operate as both a microphone and speaker such that only a single sound transducer need be used in the mirror frame  22  and in the rear seat area. Such conventional circuits and transducers are well known to those skilled in the art. 
     For use of the system, the operator pivots the mirror frame  22  downwardly from the stored position shown in FIG. 2 by gripping the lower edge  23  of the mirror frame and pivoting the frame about pivot axle  24  adjusting the mirror  26  to a position suitable for viewing the rear seat passengers. In this position, switch  34  is closed, providing power for amplifiers  33  and  40  such that two-way electrically amplified verbal communications between the vehicle operator and rear seat passengers can be established. Simultaneously, the signal from output terminal A can be employed to mute existing audio output from a stereo system, such that verbal communications are not hampered by extraneous audible information. When the communications have been completed, the mirror frame  22  is pivoted in a direction opposite arrow A in FIG. 2 back to the storage position, opening switch  34  and deactuating the amplifiers and returning the stereo system to a normal operating mode such that the front and rear seat passengers can again (perhaps desirably) remain incommunicado. 
     It will become apparent to those skilled in the art that various modifications to the preferred embodiment of the invention as described herein can be made without departing from the spirit or scope of the invention as defined by the appended claims.