Abstract:
A messaging board and a traffic light apparatus comprising a primary traffic panel including a first matrix of multicolored LEDs for directing motor traffic by displaying a plurality of images; a message panel including a second matrix of multicolored LEDs for displaying information unrelated to the directing of traffic; and a personal device interface providing two-way communication of information between the traffic light apparatus and at least one local user with a personal portable electronic device is disclosed. The messaging board is capable of being used as a communications station, as well as an information terminal and/or point-of-sales station.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS  
       [0001]     This application is a continuation-in-part of U.S. patent application Ser. No. 11/212,312, titled LED TRAFFIC LIGHT, filed Aug. 26, 2005, which is a continuation-in-part of U.S. patent application Ser. No. 10/506,058, filed Aug. 27, 2004, which is a §371 national stage application of PCT International No. PCT/US2004/006271, filed Feb. 27, 2004, the contents of each are incorporated herein by reference into the present application.  
         [0002]     Throughout this application, various references may be cited. Disclosure of these references in their entirety is hereby incorporated by reference into this application to more fully describe the state of the art to which the present invention pertains. 
     
    
     FIELD OF THE INVENTION  
       [0003]     The present invention relates to the field of traffic lights and messaging boards and, more particularly, to an LED messaging board.  
       BACKGROUND OF THE INVENTION  
       [0004]     Traffic lights are ubiquitous from city streets to country roads. Traffic lights traditionally in the United States consist of three lights: green signifying traffic may pass, yellow signifying that traffic will soon come to a stop, and red signifying traffic must stop. These lights are generally vertically aligned, one on top of the other. In this way, traffic lights control traffic at an intersection. In other locations different conventions may be adopted, such as flashing yellow meaning traffic may pass.  
         [0005]     Some conventional traffic lights are illuminated using incandescent light bulbs. Incandescent bulbs tend to use relatively large amounts of electricity and require periodic replacement as the bulbs burn out. These factors make the operation of incandescent traffic lights relatively expensive.  
         [0006]     More recently, traffic lights are being illuminated using light emitting diodes (LEDs). LEDs provide a source of light that has relatively low energy consumption, and the do not burn out as easily as light bulbs.  
         [0007]     While conventional LED traffic lights are less expensive to operate, however, they maintain the conventional approach of three lights, vertically aligned, one on top of the other. While this approach has been used for a very long time, the use of a yellow light to signify that traffic will soon come to a stop has inherent problems. Specifically, motorists approaching a yellow traffic light do not know how much longer the traffic light will continue to stay yellow. These motorists may then unnecessarily speed up creating a safety risk for other motorists and pedestrians or come to a stop unnecessarily abruptly, thereby, creating a safety risk for other motorists.  
         [0008]     Additionally, there is a need for quick dissemination of important information to motorists and pedestrians alike. This information may concern traffic conditions ahead or it may concern instructions disseminated in the event of an emergency. Because of the ubiquity of traffic lights, they are well suited for the conveyance of important information. Conventional traffic lights, however, fail to live up to fulfilling this objective.  
         [0009]     Furthermore, the ubiquity of traffic lights make them well suited for the conveyance of advertisements that can be tailored to the particular community in which the traffic light is located. The use of advertisements on traffic lights can deliver an aesthetically pleasing futuristic look and be an important source of additional revenue for town and city governments that are increasingly under financial pressure. Conventional traffic lights fail to live up to fulfilling these objectives as well.  
         [0010]     Conventional bulletin boards may statically advertise products or services. Traditionally, contact information, including street addresses where such products or services could be obtained or telephone numbers where transactions could be conducted, were displayed. At present, advertisements have moved to an electronic venue, where large, television-like appliances provide information to large groups of persons, including web sites and text message numbers and codes. These device are in wide public view, however, the public has not been provided the means to interact with such display devices. Thus, there is a need for an interactive messaging board.  
       SUMMARY OF THE INVENTION  
       [0011]     A messaging board and a traffic light apparatus comprising a primary traffic panel including a first matrix of multicolored LEDs for directing motor traffic by displaying a plurality of images; a message panel including a second matrix of multicolored LEDs for displaying information unrelated to the directing of traffic; and a personal device interface providing two-way communication of information between the traffic light apparatus and at least one local user with a personal portable electronic device is disclosed. The messaging board is capable of being used as a communications station, as well as an information terminal and/or point-of-sales station.  
         [0012]     In one aspect, the present invention is directed to an interactive bulletin board system, comprising: a signal processor coupled to a computer communications network; a messaging board coupled to said signal processor, said messaging board providing visual indicia responsive to said signal processor; and a personal portable electronic device wirelessly coupled to said computer communications network; wherein said signal processor updates said visual indicia displayed on said messaging board in response to a message sent from said personal portable electronic device to said signal processor.  
         [0013]     In another aspect of the present invention, said messaging board comprises a matrix of multicolored LEDs.  
         [0014]     In another aspect of the present invention, the system further comprises a traffic panel including a first matrix of multicolored LEDS for directing motor traffic by displaying a plurality of images.  
         [0015]     In another aspect of the present invention, said visual indicia represents information requested through the personal portable electronic device.  
         [0016]     In another aspect of the present invention, said information is obtained from the Internet.  
         [0017]     In another aspect of the present invention, said signal processor authenticates said personal portable electronic device before updating said visual indicia.  
         [0018]     In another aspect of the present invention, said personal portable electronic device comprises a device selected from the group comprising a cellular phone, a wireless laptop, a handheld email browser, an MP3 player and a digital camera.  
         [0019]     In another aspect of the present invention, the system further comprises a camera coupled to said signal processor, wherein said visual indicia comprises images provided by said camera.  
         [0020]     In another aspect of the present invention, said signal processor responds to messages sent from more than one personal portable electronic device.  
         [0021]     In another aspect of the present invention, said signal processor responds sequentially to messages received from more than one personal portable electronic device.  
         [0022]     In another aspect of the present invention, said signal processor responds to messages received from only a single personal portable electronic device until an ending condition is met.  
         [0023]     In another aspect, the present invention is directed to a method of displaying visual indicia on a public display, the method comprising: a processor receiving a message via a computer communications network from a personal portable electronic device wirelessly coupled to said computer communications network; and the processor updating visual indicia displayed on said display in response to said message.  
         [0024]     In another aspect of the present invention, the method further comprises authenticating said personal portable electronic device.  
         [0025]     In another aspect of the present invention, the method further comprises the processor queuing messages received from said computer communications network.  
         [0026]     In another aspect of the present invention, the method further comprises sending information to said personal portable electronic device in response to said message.  
         [0027]     In another aspect of the present invention, said information is one or more selected from the group comprising a digital image, a series of digitized images and digitized audio.  
         [0028]     In another aspect of the present invention, said message is one or more selected from the group comprising a text message and an email.  
         [0029]     In another aspect of the present invention, the method further comprises sending information to a web server.  
         [0030]     In another aspect of the present invention, said information is one or more selected from the group comprising a digital image, a series of digitized images and digitized audio.  
         [0031]     In another aspect of the present invention, the method further comprises the processor updating visual indicia in response to one or more messages received only from a single personal portable electronic device.  
         [0032]     In another aspect of the present invention, the method further comprises the processor updating said visual indicia in response to a queued message sent from a second personal portable electronic device after an ending condition is met. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0033]      FIG. 1  shows an LED traffic light according to an embodiment of the present invention;  
         [0034]      FIG. 2  is a block diagram of an LED control apparatus according to an embodiment of the present invention;  
         [0035]      FIGS. 3A, 3B  and  3 C show primary LED traffic panel schemes according to an embodiment of the present invention;  
         [0036]      FIG. 4  shows another embodiment of LED traffic light according to the present invention;  
         [0037]      FIG. 5  is a schematic diagram that illustrates an embodiment of the invention for additional uses of a messaging board; and  
         [0038]      FIG. 6  is a flow chart that illustrates an method for interacting with a messaging board. 
     
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS  
       [0039]     The LED traffic light according to the present invention is an LED illuminated traffic light that is capable communicating to motorists approximately how much time remains before the traffic light changes from a signal directing motorists to proceed to a signal directing motorists to stop. Additionally, the LED traffic light according to the present disclosure is capable of disseminating important information such as traffic conditions and emergency instructions. Furthermore, the LED traffic light according to the present invention is also capable of displaying animated or still advertisements.  
         [0040]     The LED traffic light according to the present disclosure can be vertically or horizontally aligned.  
         [0041]      FIG. 1  illustrates a vertically aligned LED traffic light, in which the body  10  of the LED traffic light is a column or pillar, preferably a rectangular prism, and more preferably a rectangular prism with a square base and top and rectangular lateral sides. Preferably, the lateral sides are approximately 15 feet tall and the sides of the square top and bottom are approximately 15 inches wide. A base  16  can be attached to the bottom of the column  10  to increase the stability of the column. The base may be attached to the ground or floor, for example, by bolts, not shown. The base may also be attached to a foundation, for example, a cement foundation set below ground level.  
         [0042]     The column  10  preferably has four lateral sides, but other configurations are possible such as a cylindrical prism having one continuous side or a triangular prism having three. The column must have one or more active surfaces. Active surfaces are lateral sides that contain LED panels. The column  10  has four active surfaces allowing the LED traffic light to control traffic in four directions at a four-way intersection.  
         [0043]     According to one preferred embodiment of the present invention, mounted to each active surface of the column  10  is one primary LED traffic panel  14 , one street sign receiving aperture  13 , one pedestrian LED traffic panel  12  and one message LED panel  11 . The invention is not limited to having one of each element, and various combinations are possible depending on the needs of the environment where the column  10  is installed.  
         [0044]     The primary LED traffic panel  14  is preferably a low-resolution multicolored LED panel. This panel may also be formed from multiple smaller low-resolution multi-colored LED panels assembled together. For example, the primary LED traffic panel  14  can be constructed from combining 18 (9 rows of 2) light emitting diode dot matrix modules known as the 833 Intelligent Module (IM) manufactured by Desay Optotech Ltd. of Huizhou, China. The primary LED traffic panel  14  is responsible for controlling motor traffic and functions as a replacement for the conventional traffic light. The primary LED traffic panel  14  directs traffic by displaying an image on the panel&#39;s surface. The specific images that are displayed depend on the primary traffic panel display scheme used. Examples of primary traffic panel display schemes are described in detail below.  
         [0045]     The street sign receiving aperture  13  allows for the attachment of a street sign  15 . When a street sign  15  is attached, the LED traffic light also functions as a street sign. The street sign  15  may be a conventional pre-printed sign board or the street sign  15  may be an LED panel capable of displaying any programmed street name or other information like cross streets or building numbers. Even in embodiments of the present invention where the column  10  has four active surfaces, two street signs orthogonally oriented may be sufficient to convey street names.  
         [0046]     The pedestrian LED traffic panel  12  is preferably a low-resolution LED panel, formed as a multicolored LED panel. This panel may also be formed from multiple smaller low-resolution multicolored LED panels combined in a single unit. For example, the pedestrian LED traffic panel  14  can be constructed by combining 6 (3 rows of 2) light emitting diode dot matrix modules known as the 08331M manufactured by Desay Optotech Ltd. of Huizhou, China. The pedestrian LED traffic panel  12  is responsible for directing pedestrian traffic and functions as a replacement for the conventional “walk/don&#39;t walk” pedestrian traffic signal. The pedestrian LED traffic panel  12  directs pedestrian traffic by displaying an image on the panel&#39;s surface. The specific images that are displayed depend on the pedestrian traffic panel display scheme used. Examples of pedestrian traffic panel display schemes are described in detail below.  
         [0047]     The message LED panel  11  is preferably a high-resolution LED panel, such as a multicolored LED panel. This panel may also be formed from multiple smaller high-resolution multicolored LED panels combined as a single unit. For example, the message LED traffic panel  11  can be constructed from combining 12 (6 rows of 2) light emitting diode dot matrix modules known as the 0630IM manufactured by Desay Optotech Ltd. Of Huizhou, China. The message LED panel  11  is capable of displaying important information such as traffic conditions and emergency instructions. Additionally, the message LED panel  11  is capable of displaying full color high-resolution advertisements that may be animated or still.  
         [0048]     Furthermore, the message LED panel  11 , the pedestrian traffic panel  12 , and the primary traffic panel  14  can all have the same resolution, as provided by the LED modules. Also, the locations on the body  10  of the message LED panel  11 , the pedestrian traffic panel  12 , and the primary traffic panel  14  are interchangeable. This can be done physically or by software. Alternatively, all three panels can be used as message boards.  
         [0049]     As shown in  FIG. 2 , the primary LED traffic panel  14 , the pedestrian LED traffic panel  12  and the message LED panel  11  are all controlled by an LED panel controller  24 . Additionally, when the street sign  15  contains an LED panel or other lighted element, the street sign  15  is also controlled by the panel controller  24 . The panel controller  24  controls each LED on the LED panels according to instructions provided by a signal processor  25 . The signal processor  25  may be a computer with a microprocessor, memory, storage device, such as a hard disk, and an interface for sending instructions to the panel controller  24 . The signal processor  25  may also include other hardware necessary for controlling the LED panels  11 ,  12 ,  14 ,  15  and the controller  24 . The signal processor may be located within of the column  10  or at a remote location.  
         [0050]     The signal processor  25  runs a program for controlling the primary LED traffic panel  14  according to the primary LED traffic panel scheme, controlling the pedestrian LED traffic panel  12  according to the pedestrian LED traffic panel scheme and controlling the message LED panel  11  according to a message program as described below.  
         [0051]     The signal processor  25  controls the primary LED traffic panel  14  according to the primary LED traffic panel scheme (primary scheme). This primary scheme defines what images the primary LED traffic panel  14  displays to direct traffic and the logic used to determine when to display the various defined images.  
         [0052]      FIGS. 3A-3C  illustrate several examples of primary schemes that can be used according to the current specification. The most basic primary scheme is illustrated in  FIG. 3A , this is the conventional primary scheme for a traffic control light. According to this scheme, three circles are depicted representing the circles of a conventional traffic light. As with a conventional traffic light, when traffic is to be directed to proceed, the top circle  31  glows green. When traffic is to be informed of an impending red light, the center circle  32  glows yellow. When traffic is to be directed to stop, the bottom circle  33  glows red. Additionally, other traffic signals can be created, such as blinking yellow and blinking red signals, as desired. The conventional scheme includes the images to be displayed and the logic for directing traffic according to this scheme.  
         [0053]      FIG. 3B  illustrates an example of a modified conventional primary scheme. This scheme may be any scheme that preserves basic characteristics of the conventional scheme. For example, the conventional scheme may be modified to consist of three rectangles, as shown in  FIG. 3B . These rectangles would act in the same way the three circles of the conventional primary scheme as illustrated in  FIG. 3A  and described above. For example, when traffic is to be directed to proceed, the top rectangle  34  glows green. When traffic is to be informed of an impending red light, the center rectangle  35  glows yellow. When traffic is to be directed to stop, the bottom rectangle  36  glows red.  
         [0054]     Other modifications could include causing the entire primary LED panel to turn one solid color such as all red, all yellow, or all green to control traffic. Other modifications could incorporate the use of a count-down timer indicating how much longer the signal will remain the same until it is time to switch. For example, when the light is yellow, a timer in the form of black digital display  37  located in the center of the yellow light  35  can count down the time remaining until the light turns red. Another example would be the use of a stripe (not shown) either vertically or horizontally aligned that shrinks as the time until the next light change approaches. After the stripe has fully disappeared, the light changes. These count-down timers would give motorists greater opportunity to ascertain whether they should come to an immediate stop or continue through the intersection, thereby aiding the flow of traffic and increasing the safety of the intersection.  
         [0055]      FIG. 3C  illustrates an example of a gradient primary scheme. The gradient primary scheme calls for the illumination of only a horizontal strip  38 . The strip begins at the top of the LED panel where the gradient is colored green. The strip then moves downward illuminating a color that is increasingly yellow and decreasingly green until the strip is half-way down the LED panel and fully yellow. At this point the strip continues to move downward illuminating a color that is increasingly red and decreasingly yellow. When the strip has reached the bottom of the LED panel, it is fully red. Then a clear signal is sent indicating that traffic is directed to stop. For example, the strip may disappear and the entire rectangle will turn red. The use of this timed gradient allows motorists greater opportunity to ascertain whether they should come to an immediate stop or continue through the intersection, thereby aiding the flow of traffic and increasing the safety of the intersection.  
         [0056]     The pedestrian LED traffic panel  12  is controlled according to the pedestrian LED traffic panel scheme (pedestrian scheme). This pedestrian scheme defines what images the pedestrian LED traffic panel  12  displays to direct traffic and the logic used to determine when to display the various defined images. The conventional pedestrian scheme illustrates a white stick figure of a person walking indicating that pedestrian traffic may cross the street. A red stick figure of a person standing still indicates that pedestrian traffic may not cross the street. The animated pedestrian scheme uses figures similar to the conventional pedestrian scheme, however, the stick figures are animated to greater clarify the intent of the signal. For example, when pedestrian traffic is directed to proceed with crossing the street, a white stick figure person may have legs that move to indicate walking. Animation need not be limited to the walking signal, for example, when pedestrian traffic is directed to refrain from crossing the street, a red stick figure person might be shown to repeatedly tap one foot to illustrate waiting. Additionally, the timer features discussed above may be incorporated into the pedestrian scheme. For example, a count-down timer might accompany the walking stick figure.  
         [0057]     A message program is used to control the message LED panel  11  according to the present invention. The message program runs on the signal processor  25 , and the signal processor  25  is connected to a computer communications network such as the Internet or a wide area network, as shown in  FIG. 2 . The signal processor  25  may be connected to the computer communications network via a standard telephone line, a DSL line, a fiber-optic line, a coaxial cable or any other form of wired connection. Alternatively, the processor  25  may be connected to the computer communications network via a wireless connection, such as a wireless connection over a digital cellular telephone network or a wireless local area network connection, such as a wireless connection conforming to IEEE 802.1b or 802.11 (e.g. 802.11a, 802.11b, 802.11g, and 802.11n). The connection into the computer communications network described above (hereinafter “computer communications network connection”) may be over the Internet using a secure method of communication such as encryption and/or a secure virtual private network (VPN). Using the computer communications network connection, the municipality or contracted administrator may modify the message program to update messages or to install animated advertisements. The message program determines what messages are displayed on the message LED panel  11 . The message LED panel  11  is also capable of disseminating important information such as traffic conditions and emergency instructions. For example, text can be displayed indicating that poor traffic conditions are ahead and advising motorists of alternative routes or information to motorists to be on the lookout for a particular vehicle suspected of transporting a fugitive. Text can be displayed all at once or text may scroll across the panel. The message program is capable of receiving any manner of message from the computer communications network.  
         [0058]     In order to increase municipal revenue, municipalities may choose to run advertisements on the message LED panel  11 . Because the message LED panel  11  is high resolution, television-style advertisements can be displayed. These advertisements can be tailored for the particular community in which the traffic light is installed, thereby increasing the value of the advertisement. The advertisements can be regularly updated over the computer communications network connection.  
         [0059]      FIG. 5  illustrates an embodiment of the invention for additional uses of the message board  11  in the LED traffic light. As shown in  FIG. 5  and previously mentioned above in connection with  FIG. 2 , signal processor  25  is coupled to a computer communications network such as the Internet  51 . Signal processor  25  may also be coupled to a cellular network  52  and function as a cellular phone transmitter or relay station for a cellular telephone  53  via cellular phone antenna  54 . Signal processor  25  may also be adapted to serve as a wireless internet transmitter station or hot spot via access point  55 . A portable laptop, personal digital assistant (PDA), or other personal portable electronic devices  56  can connect to the Internet  51  through access point  55 . Access point  55  may support 802.11 wireless public networking, Bluetooth, or any other wireless or infrared technologies known in the art. Signal processor  25  can be adapted to include audio and or video surveillance equipment  57  to assist in law enforcement, emergency response or advertising. Thus, the LED traffic light can also be adapted to include a stationary or mobile webcam, live cam, or other digital audio and/or video equipment (represented by camera microphone  57 ) which records and/or broadcasts real-time audio and/or video of its surrounding location to other LED traffic lights nearby or in other cities, or on a website  58  via Internet  51 .  
         [0060]     Additionally, an emergency motif can be used to warn motorists and pedestrians to move to the curb or stay on the sidewalk in the event of an oncoming emergency vehicle.  
         [0061]     The LED traffic light according to the present invention has the added advantage of being easily configurable to display a holiday or festive motif. To implement such a motif, the utilized schemes can be modified to display timely festive accents on one or more LED panels. The use of specialized motifs is not limited to holidays and festivals, motifs can be used to modify the appearance of LED traffic lights in accordance with the cultural or historic significance of the neighborhood or area in which the LED traffic light is located.  
         [0062]     The LED traffic light according to the present invention is not limited to a vertical column configuration. For example, the LED traffic light may be horizontally oriented.  FIG. 4  illustrates an embodiment of the present invention where the LED traffic light is horizontally oriented. According to one example of a horizontal orientation, the traffic light  40  is held over the intersection by cables or attached to one or more support columns. The primary LED traffic panel  42  directs traffic while the message LED panel  41  displays a message or advertisement. A pedestrian LED traffic panel (not shown) and/or a street sign (not shown) may also be included in horizontal embodiments. In another example, the LED traffic light may be oriented in a L-shaped, a hook-shaped, a chair-shaped, a bench-shaped, a steeple-shaped, or a zig-zag-shaped configuration by arranging the message LED panel  11 , the pedestrian LED traffic panel  12 , and the primary traffic panel  14  either 45° or 90° relative to each other.  
         [0063]     In another embodiment of the present invention, the LED traffic light allows a user in visual and communications proximity of message LED panel (or LED message board)  11  to interact with the device to obtain information, products and/or other services. Multiple users may interact with the device simultaneously or sequentially, for example, on a first-come, first-served basis. As an example, when the device is being used by a particular user, messages sent by other users may be queued by signal processor  25 . The device may respond only to messages sent by a current user, until an ending condition, such as a message transmitted by a user or the mere passage of time, allows the device to respond to the next message received by another user that is stored in the queue. As noted above and illustrated in  FIG. 5 , signal processor  25  is connected to Internet  51 . Either access point  55 , cellular antenna  54  or an interface to a cellular telephone network  52  or communications through Internet  51  can provide a proximal user to communicate with signal processor  25  and affect the output of LED message board  11 . Proximal users of personal portable electronic devices, such as cellular phone  53 , PDA/wireless laptop  56 , handheld email browsers, MP3 players, digital cameras or other electronic devices with wireless communications capabilities (not shown) may interface with signal processor  25 , either directly or via Internet  51  or cellular network  52 , using emails, SMS text messages, or other types or formats of messages as well known in the art. To communicate with the LED traffic light, the proximal user may need to register on a website and/or download a program into the personal portable electronic device, or authenticate via web server  58  as is well known in the art. In a preferred embodiment, signal processor  25  or web server  58  provides two-way communications with the personal portable device. In this way, LED message board  11  can be used as, for example, an information terminal. As an information terminal, using his/her personal portable electronic device (e.g., PDA  56 ), a proximal user may request information, such as directions to a particular event or address, advertisements, promotions, play games, or request other visual output from LED message board  11 . Alternatively, signal processor  25  may receive requests from a proximal user and send back requested information directly to his/her PDA  56  or other personal portable electronic device while providing instructions to obtain information on LED message board  11 . Such information may be stored in signal processor  25  or may be obtained from web server  58  or Internet  51 .  
         [0064]     As noted above, the LED traffic light may also provide a cellular phone transmitter or relay station or a wireless internet transmitter, thus allowing a user with a wireless laptop computer or a web-enabled cellular phone to directly access the Internet, if desired.  
         [0065]     In addition, the LED traffic light may be used as a self-service electronic point-of-sales station. For example, the local user may use a Bluetooth®-enabled personal portable electronic device, such as a cellular phone, to access the LED traffic light to purchase tickets for a theater show advertised on the LED message board  11 .  
         [0066]     As discussed above and illustrated in  FIG. 5 , a municipality or administrator may modify the message program or install animated advertisements using a computer  59  connected to the Internet  51 , for example. In addition, individuals or businesses that advertise using the LED traffic light may also modify or update their advertisements via Internet  51  or by interacting directly with LED traffic light using a personal portable electronic device (e.g., PDA  56 ; cell phone  53 ), or through some alternative computer communications network or cellular telephone network  52 . This feature may be particularly useful for local advertisers who will be able to modify or update their advertisements based on local pedestrian traffic, for example, or based on pedestrian&#39;s digital interaction with the LED traffic light, as instructed by its LED message board  11 . Furthermore, LED traffic lights may be designated as digital bulletin boards, enabling users to post information or “digital flyers” regarding upcoming local community events.  
         [0067]      FIG. 6  is a flow chart that illustrates a method for interacting with a messaging board. As shown in  FIG. 6 , at step  610 , the system receives a wireless message from a PDA. Alternatively, the system may receive the message from the Internet. As explained above, the message may be an email, text message, or some other form of digital communication as is well known in the art.  
         [0068]     In a preferred embodiment, illustrated in step  620 , the system authenticates the identity of the PDA user using the identification information contained in the message. In an alternate embodiment, the system will query the user for further information in order to verify that the user has the proper credentials to interact with the system. This step is optional, as the system is designed for unfettered public use. However, different users may be permitted to perform different functions, depending upon their authenticated identity, thus authentication may ensure that unauthorized tampering occurs. If authentication is required, unauthenticated user messages are discarded.  
         [0069]     In step  630 , the system examines the message sent to it to determine if the PDA sending the message is at the front of the line for interaction with the message board. If not, in step  635  the user&#39;s message is stored in a queue for later processing. However, if the user is the current user interacting with the system, processing proceeds to step  640  where the system updates the visual indicia on LED message board  11  in response to the message. Exemplary updates were illustrated in the preceding paragraphs.  
         [0070]     Optionally, in step  650 , the system generates a message responsive to the user&#39;s message. The responsive message might contain data from a peripheral device attached to the system, for example, digital audio or video, and send that information back to a web server for viewing through the Internet. The system may alternatively send the information directly to the user&#39;s PDA. In this fashion, point-of-sale transactions could be conducted.  
         [0071]     In step  660 , the system checks to see if an ending condition has been reached. This check is necessary to ensure that a particular user does not monopolize the resources provided by the messaging board system. Such condition comprises the passage of time or a particular limit on the, number of user messages processed, for example. If the end condition has been reached, in step  670  the identity of the current user is updated to the next user waiting in line.  
         [0072]     In step  680 , the next message in the queue is retrieved. Processing loops back to step  630 , where that message is checked to see if it came from the current user.  
         [0073]     Although the present invention has been described in relation to particular embodiments thereof, many other variations and modifications and other uses will become apparent to those skilled in the art. It is preferred, therefore, that the present invention be limited not by the specific disclosure herein, but only by the appended claims.