Abstract:
A portable wireless video system comprises a pan and tilt mechanism supporting a video camera, and remote wireless mechanism in electronic communication with the pan and tilt mechanism and video camera. The remote wireless mechanism includes a video transmitter for transmitting video signals generated by the video camera and communicated to the remote wireless mechanism. A portable wireless terminal has a receiver and a display for displaying sequenced images from the video signal. The portable wireless terminal also includes a keypad for generating pan and tilt commands which are transmitted to the remote wireless mechanism, which in turn controls the pan and tilt mechanism in response thereto. The camera may be mounted to the top of a tall mast and the video signals may be conveyed to the portable wireless terminal via a cellular phone network.

Description:
CROSS-REFERENCE TO RELATED APPLICATION  
       [0001]    This application claims the benefit of U.S. Provisional Patent Application Serial No. 60/437,753, filed Jan. 3, 2003. 
     
    
     
       BACKGROUND OF THE INVENTION  
         [0002]    1. Field of the Invention  
           [0003]    The present invention relates to a method and apparatus for wireless video monitoring of an area or activity.  
           [0004]    2. Description of the Related Art  
           [0005]    Young children require considerable amounts of care and supervision. Parents of young children often have full time jobs as well as other demands on their time. To help parents of young children a child care industry has built up. Nanny and au-pairs are often employed by parents to look after young children. Unfortunately, not all nannies or au-pairs are created equal and some are less good at their job than others, and some commit criminal acts against the children they are hired to care for. Sometimes a parent might think a nanny is being cruel to their child, but absent obvious signs of abuse a parent can be left in a difficult situation as to the best cause of action.  
           [0006]    Some parents arrange their lives so that at least one parent is always at home or on hand to supervise and look after their children. However, there have been cases where young children have been snatched at night while sleeping in their bedroom. Thus, there is a need for a way of checking on the well-being of a child even when both parents are present in the home.  
           [0007]    A parent may spend inordinate amounts of time traveling as part of their job but would like to feel that they are still connected to their child. Pictures placed in wallets or purses help, but pictures represent but a fleeting moment in a child&#39;s life. Thus, there is a need for a device or system that enables a parent to remotely view their child while traveling, e.g. on a long train journey. Such a device should preferably prevent unauthorized persons such as pedophiles, opportunistic and accidental voyeurs also viewing the child or a legitimate but otherwise private family occasion or activity.  
           [0008]    When a homeowner or lessee travels away from their home, they can feel some level of anxiety about the well-being of their property or e.g. a pet animal. A means of remote viewing, and preferably a secure means for remote viewing, of their home from any location is desirable to help alleviate such anxiety.  
           [0009]    In addition, there is a growing need for real time monitoring of people and activities in all sorts of settings. For example, there is a considerable interest in coaching football and baseball teams. Coaching teams of young athletes to work as a team is difficult. A coach will inevitably look in a particular direction during play. For example, the less expert coach might selectively watch the players by following the ball instead of looking at the team as a whole. Individual team member responses remain critical throughout the game regardless of the position of the ball or play. Even if a coach tries to view the whole team, this might prove difficult, particularly if the coach is located on a side-line at ground level. Thus, there is a need for improving the ability of a coach to monitor the performance of all individuals in a team.  
           [0010]    Placing permanent video coverage along a street or over a public area can cause a lot of unease, particularly for residents who live along the street. Civil rights and conspiracy theorists often complain that placing video cameras in public streets is undesirable on privacy or “big brother is watching you” grounds. Regardless of countless arguments that a reasonable person does not have a reasonable expectation of privacy while e.g. walking along a public street, the fact remains that many members of the public can feel unease and discomfort at the thought that cameras may be placed permanently along public streets and parks. However, there are times when video monitoring of a public area is required during, e.g., an otherwise peaceful and legal demonstration known to be vulnerable to infiltration by anarchist groups of individuals bent on causing mayhem and destruction to property. Thus, there is a need for a means of video monitoring that is simple and easy to erect and take down thus solving the problem of over intrusive video monitoring of public streets.  
           [0011]    In addition, there is a need for real time monitoring of individuals inside buildings such as a baby or young child in a family dwelling. A parent may have a video camera that lacks the ability to pan and tilt. Thus, there is a need for a platform adapted to pan and tilt the camera, and provide a wireless communication capability to enable a parent to remotely monitor their baby over a short or long distance.  
           [0012]    Several efforts have been made to address these and other problems. U.S. Patent Publication No. 2002/0012050 (“the &#39;050 publication”), published Jan. 31, 2002, shows an image pickup system comprising a commander, a video camera and a display device in the form of a view finder with a small display such as a liquid-crystal display. The display device is incorporated into a head set. The head set also comprises a microphone. A user may look at images displayed in the view finder and have the microphone pick up his own voice for transmission and integration with video recorded by the camera. The device described in the &#39;050 publication is not suitable for long distance remote viewing. The device described in the &#39;050 publication is also not suitable for providing an elevated video view of e.g. a student marching band practicing on a school field.  
           [0013]    U.S. Pat. No. 6,161,933, issued Dec. 19, 2000 to Tschida et al., describes a device for controlling, regulating and monitoring a cine camera. The &#39;933 patent does not teach or suggest an elevated means for monitoring an activity or area, nor does the &#39;933 patent teach or suggest adapting a camera to verify and accept a cell call for secure transmission of a continuous real time video of an area or activity over a long distance as envisaged in the present invention.  
           [0014]    U.S. Pat. No. 5,079,634, issued Jan. 7, 1992 to M. Hosono, describes an apparatus for wireless-controlling a camera integral with a VTR (video tape recorder) and an apparatus for two-direction simultaneous control of an electrically-driven device for use with this camera wireless control apparatus including a display. The &#39;634 patent to Hosono is distinguishable from the present invention in several important respects. For example, the &#39;634 patent does not show a video camera in combination with a tall supporting mast. In addition, the &#39;634 patent does not show a video camera adapted to receive a cell phone request for continuous video for cellular transmission to a remote location that could be thousands of miles away from the video camera.  
           [0015]    U.S. Pat. No. 5,414,444, issued May 9, 1995 to D. M. Britz, shows a personal communicator having an “orientable video imaging element”. The &#39;444 patent to Britz does not show a video camera under the independent control of a separate controller wherein the separate controller, which may be a cell phone adapted to act as the controller, can cause the video camera to pan and tilt. Neither does the &#39;444 patent show a secure means for receiving a cell phone call adapted to automatically trigger the transmission of video to another cell phone with, e.g., G4 technology to display the transmitted video.  
           [0016]    Other patents showing devices for hand related devices but which do not solve the above mentioned problems include U.S. Pub. No. US 2002/0097332 A1, published Jul. 25, 2002 (a system for omnidirectional image viewing at a remote location without the transmission of control signals); U.S. Pub. No. US 2002/0015095 A1, published Feb. 7, 2002; U.S. Pat. No. 4,097,893, issued Jun. 27, 1978 to M. Camras (portable video recording system employing a camera and a recording station connected by wireless links); U.S. Pat. No. 4,928,179, issued May 22, 1990 to Takahashi et al. (video camera capable of effecting remote control operation); U.S. Pat. No. 4,974,088, issued Nov. 27, 1990 to T. Sasaki (remote control apparatus for a rotating television camera base); and U.S. Pat. No. 5,065,249, issued Nov. 12, 1991 to Horn et al. (a portable video camera/monitor support).  
           [0017]    Further patents showing devices for hand related devices but which do not solve the above mentioned problems include U.S. Pat. No. 5,382,943 issued Jan. 17, 1995 to M. Tanaka (a remote monitoring unit); U.S. Pat. No. 5,528,264 issued Jun. 18, 1996 to Kautzer et al. (a wireless remote control for electronic equipment); U.S. Pat. No. 5,594,498 issued Jan. 14, 1997 to W. C. Fraley (a personal audio/video surveillance system); U.S. Pat. No. 5,752,112 issued May 12, 1998 to Paddock et al. (a mounting system for body mounted camera equipment); U.S. Pat. No. 6,027,257 issued Feb. 22, 2000 to Richards et al. (a pan and tilt unit); U.S. Pat. No. 6,056,450 issued May 2, 2000 to D. R. Walling (a camera support device with a telescoping pole and monitor); and U.S. Pat. No. 6,164,843 issued Dec. 26, 2000 to G. Battocchio (a tripod particularly for photographic uses).  
           [0018]    Still other patents showing devices for hand related devices but which do not solve the above mentioned problems include U.S. Pat. No. 6,244,759, issued Jun. 12, 2001 to R. Russo (an adjustable camera support); U.S. Pat. No. 6,293,676, issued Sep. 25, 2001 to J. Holway (a camera support including extendable post); U.S. Pat. No. 6,439,515, issued Aug. 27, 2002 to A. D. Powers (a video camera support device); U.S. Pat. No. 6,445,410, issued Sep. 3, 2002 to K. Kawano (an image input apparatus); Japanese Patent Nos. JP3-265376, and JP4-284435; and European Patent Publication Nos. 578,183, and 656,719.  
           [0019]    None of the above inventions and patents, taken either singly or in combination, is seen to describe the instant invention as claimed.  
         SUMMARY OF THE INVENTION  
         [0020]    A portable wireless video system includes a pan and tilt mechanism supporting a video camera, and remote wireless mechanism in electronic communication with the pan and tilt mechanism and video camera. The remote wireless mechanism includes a video transmitter for transmitting a video signal generated by the video camera and communicated to the remote wireless mechanism. A portable wireless terminal has a receiver and a display for displaying sequenced images from the video signal. The portable wireless terminal also includes a keypad for generating pan and tilt commands which are transmitted to the remote wireless mechanism, which in turn controls the pan and tilt mechanism in response thereto. The camera may be mounted to the top of a tall mast and the video signals may be conveyed to the portable wireless terminal via a cellular phone network.  
           [0021]    Accordingly, it is a principal object of the invention to provide a portable wireless video monitoring system and method for coaching students.  
           [0022]    It is another object of the invention to provide a portable wireless video monitoring system which may be used to monitor a child&#39;s bedroom or play area for security purposes.  
           [0023]    It is a further object of the invention is to provide a portable wireless video monitoring system as a video link between a traveling away from home parent and their child.  
           [0024]    It is an object of the invention to provide improved elements and arrangements thereof in an apparatus for the purposes described which is inexpensive, dependable and fully effective in accomplishing its intended purposes.  
           [0025]    These and other objects of the present invention will become readily apparent upon further review of the following specification and drawings. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0026]    [0026]FIG. 1 is an environmental, perspective view of a portable wireless video monitoring system configured for elevated video monitoring of a group activity according to the present invention.  
         [0027]    [0027]FIG. 2 is a schematic diagram of a portable wireless video monitoring station according to the present invention.  
         [0028]    [0028]FIG. 3 is a schematic diagram of an alternative portable wireless video monitoring station according to the present invention.  
         [0029]    [0029]FIG. 4 is an elevation view of the portable wireless monitoring station of FIG. 3.  
         [0030]    [0030]FIG. 5 is a perspective view of a height adjustable mast according to the present invention with at least one video monitoring station of FIG. 2.  
         [0031]    [0031]FIG. 6 is a perspective view of another height adjustable mast according to the present invention.  
         [0032]    [0032]FIG. 7 is an end view of one section of a telescoping mast in a portable wireless video monitoring system according to the present invention.  
         [0033]    [0033]FIG. 8A is a top view of a mobile terminal according to the present invention.  
         [0034]    [0034]FIG. 8B is a side view of the mobile terminal of FIG. 8A.  
         [0035]    [0035]FIG. 9 is a schematic view of the internal components of the mobile terminal of FIG. 8A.  
         [0036]    [0036]FIG. 10 is a flow chart showing the steps of a voice recognition algorithm according to the invention.  
         [0037]    [0037]FIG. 11 shows a diagrammatic overview of a cellular enabled video monitoring system according to the present invention.  
         [0038]    [0038]FIG. 11A is a schematic diagram of a cellular enabled video monitoring system.  
         [0039]    [0039]FIG. 12 is a front view of a mobile terminal in the form of a cell phone adapted to display video according to the present invention.  
         [0040]    [0040]FIG. 13 is a flow chart of a firewall for controlling access to a video monitoring station according to the present invention.  
         [0041]    Similar reference characters denote corresponding features consistently throughout the attached drawings.  
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0042]    The present invention relates to a portable wireless video monitoring system and method for wireless video monitoring of an area or activity, such as a child&#39;s bedroom or play area in a home environment. The invention is particularly directed to coaching a group of students engaged in a physical activity such as band playing. The invention is more particularly directed to the use of different wireless communication technologies, such as conventional cellular technology and more advanced 3G enabled technology, in conjunction with video monitors.  
         [0043]    Elevated Video System as a Coaching Aid  
         [0044]    In this aspect of the invention, an elevated video system (“EVS E50”) configured for use as a coaching aid for team sports, marching bands and the like is described.  
         [0045]    The EVS E50, designated generally as  50  in the drawings, is shown in FIGS.  1  through to FIG. 10. Broadly, the EVS E50 comprises a far side or remote terminal  60   f , and a near side or operator terminal  70   n . Generally, the far side  60   f  comprises a portable mast  80   f  fitted with at least one wireless video monitoring station  85   f , and the near side  70   n  comprises a handheld portable terminal  75   n  adapted to wirelessly communicate with the wireless video monitoring station  85   f  and display video received therefrom on a screen  76   n  (see e.g. FIG. 9).  
         [0046]    For ease of description, a reference number terminating with the letter “f” designates that the device is located on the far side  60  (i.e.,  60   f ), and conversely a reference number terminating with the letter “n” indicates that the device so referenced is located on the near side  70  (i.e.  70   n ) of the EVS E50.  
         [0047]    The far side wireless video monitoring station  85   f  preferably comprises a video camera  90   f , a pan and tilt mechanism  95   f , a control circuit  100   f,  a wireless transmitter  101   f,  and a wireless receiver  102   f  (see FIG. 2). The pan and tilt mechanism  95   f  is attached to the video camera  90   f . The control circuit  100   f  is operably connected to the video camera  90   f , the wireless transmitter  101   f  and receiver  102   f.  It should be understood that the wireless transmitter  101   f  and receiver  102   f  may be integrated and treated as a transceiver  103   f.    
         [0048]    The wireless video monitoring station  85   f  may further comprise an optional storage device  104   f  for storing video and/or audio. The storage device  104   f  may take various forms such as electronic or magnetic media, e.g. an electronic memory chip or a conventional hard-drive, respectively. The storage device  104   f  may be a VCR (video cassette recorder). In the cellular enabled embodiment of the wireless monitoring station  85   f  described below, the optional storage device  104   f  can play an important role in providing a smart download of video frames in instances where the local cellular network environment offers marginal or limited bandwidth for transmitting video frames to a cellular enabled handheld portable terminal  75 .  
         [0049]    Each far side wireless video monitoring station  85   f  is preferably powered by at least one rechargeable battery, such as at least one twelve volt rechargeable battery  125  (see e.g. FIG. 5) or any suitable equivalent thereof. Also, each far side wireless video monitoring station  85   f  may further comprise an optional microphone  110   f  to provide a far side analog microphone signal for transmission to the near side handheld portable terminal  75   n.  The microphone  110   f  may be located a considerable distance away from the camera  90   f  thus helping to solve the problem that often occurs when a group activity such as a football or soccer game is too far away from the video camera  90   f  for a microphone to pick up sounds if the microphone is placed at the same location as the camera  90   f . The analog microphone signal generated by the microphone  110   f  may be incorporated into the signal broadcast by the transmitter  101   f  to the handheld portable terminal  75   n.    
         [0050]    It should also be understood that the video camera  90   f  may be a standard video camera  90   f ′ separately coupled to a radio frequency (“RF”) transmitter  103   f ′ (see FIG. 3); in this embodiment of the invention the video camera  90   f ′ is not operably coupled to the control circuit  100   f.  Standard video cameras include a standardized adapter for attaching to standard tripod mounts, e.g., using shoe-plate or screw connections. Thus, the handheld portable terminal  75   n  cannot be used by a coach  150  to wirelessly adjust, for example, the focus of the camera  90   f ′, but can be used to adjust its viewing area by sending wireless command instructions to the pan and tilt mechanism  95   f  to pan and/or tilt the camera  90   f ′. Thus, a user may attach his/her own video camera  90   f ′ (preferably a camera with auto-focus) to the pan and tilt mechanism  95   f  and attach a video line between their camera  90   f ′ and the RF transmitter  101   f ′. In this embodiment, in order to output video originating from the video camera  90   f ′, the portable handheld terminal  75   n  would require a receiver  102   n  (see e.g. FIG. 9) tuned into the transmit frequency of the transmitter  101   f ′, and a transmitter  101   n  to transmit command instructions to the receiver  102   f  and then onto the pan and tilt mechanism  95   f  via the control circuit  100   f.    
         [0051]    The near side  70   n  comprises a handheld portable terminal  75   n  (see e.g. FIGS. 1, 8A,  8 B and  9 ) adapted to receive and display wireless video originating from the far side wireless video camera  90   f , and is further adapted to transmit command instructions to the far side wireless video monitoring station  85   f  to control the video camera  90   f  and the pan and tilt mechanism  95   f . The EVS E50 preferably operates at 2.4 GHZ over a distance of up to about three hundred feet. The preference for the 2.4 GHZ frequency owes much to the current rules and regulations governing electromagnetic emissions. It should be understood that other frequencies may be used subject to a change to the rules and regulations governing electromagnetic emissions.  
         [0052]    The wireless video camera  90   f  may take the form of an X10 wireless video camera, particularly a weather proofed X10 wireless video camera shown atop a mast  80   f , as shown in, e.g., FIGS. 1 and 4- 6 . It should be understood that the pan and tilt mechanism  95   f  may take various forms, such as a remote controlled pan and tilt table used in the wireless VN-C30U video system supplied by JVC, and the well known NINJA Pan &#39;n Tilt X10 wireless video camera mount supplied by X10. A functional pan and tilt mechanism is described in U.S. Pat. No. 4,945,367, issued Jul. 31, 1990 to D. M. Blackshear, which is incorporated herein by reference in its entirety.  
         [0053]    [0053]FIG. 1 shows an environmental, perspective view of one embodiment of the EVS E50. The far side comprises at least one wireless video monitoring station  85   f  mounted on a portable mast  80   f  in the form of a collapsible tripod  130   f , which may be extended from about four feet up to about thirty feet. The near side  70   n  comprises a portable handheld terminal  75   n  adapted to wirelessly communicate with the wireless video monitoring station  85   f.    
         [0054]    Still referring to FIG. 1, at least one of the wireless video monitoring stations  85   f  provides an elevated view of a plurality of a group being coached, such as members of a high school marching band  140  practicing contemporary band playing. A coach  150  receives an elevated view of the band on a handheld terminal  75   n.  The coach  150  can send wireless command instructions via the handheld terminal  75   n  to a selected wireless video monitoring station  85   f  to cause a pan and tilt mechanism  95   f  to keep a video camera  90   f  pointed at the band  140  to provide a desired elevated view of the band  140 .  
         [0055]    The coach  150  sees an elevated view of the band  140  displayed on the near side mobile terminal  75   n , thus supplementing a ground level view of the band  140 . Specifically, the video of the band displayed on the mobile terminal  75   n  enables the coach  150  to quickly spot mistakes made, e.g., back row members of the band  140  marching out of step or an out of position member of the band  140 .  
         [0056]    More specifically, a coach  150  typically has problems coaching the whole group. For example, the coach  150  can see the outer or facing rows of a band  140  but might have great difficulty in getting an overall view of the band  140  while coaching at ground level. Still more specifically, line of sight limits the coach to monitoring the outer members of a multi-row group of band members, but with the video from the EVS E50 the coach  150  can simultaneously see outer members, middle position members and back row members of the marching band  140 . Thus, as should now be apparent, the EVS E50 lends itself to an improved method of coaching.  
         [0057]    The improved method of coaching comprises the step of providing a coach  150  with an elevated view of a plurality of members being coached, such as a high school marching band  140 , wherein the coach is able to combine the elevated view of the band members with conventional line of sight ground level observations, thereby solving the problem that often besets coaches, the need for simultaneous monitoring of substantially all members of a band  140 .  
         [0058]    Referring to FIG. 4, a wireless video monitoring station  85   f  is shown attached to a support platform  105  affixed to a telescopic support column  170 , which forms part of the mast  80   f  (see FIG. 5). The wireless video monitoring station  85   f , along with its receive/transmit antenna  190 , is housed in a protective shroud  180 . The protective shroud  180  protects the wireless video monitoring station  85   f  from inclement weather. The protective shroud  180  can take any suitable form, including that of a transparent bubble, though it is preferred that the protective shroud  180  is made of a transparent polymer. It should be understood that the wireless video monitoring station  85   f  may be fitted in any suitable configuration to the mast  80   f , e.g. upside down relative to platform  105  as shown in FIG. 4, or atop of the platform  105 . It is preferred that at least one station  85   f  is attached to each mast  80   f , i.e. more than one mast  80   f  may be used to provide the desired video coverage.  
         [0059]    It is preferred that each wireless video monitoring station  85   f  is of optimum construction. Thus, with respect to the mast  80   f , where overloading of the support column  170  must be avoided, the video camera  90   f  is preferably small and lightweight. Suitable examples of lightweight video monitoring stations  85   f  include the X10 systems, and more particularly the wireless VN-C30U video system supplied by JVC, and the NINJA Pan &#39;n Tilt X10 wireless video camera and pan/tilt system supplied by the X10 company.  
         [0060]    Referring to FIGS. 1, 5,  6 , and  7 , the telescopic support column  170  comprises a series of hollow tubes  200  with progressively increasing diameters, so that the column  170  can be collapsed for portability and easy storage. The hollow tubes  200  are preferably made of tubes of high strength but lightweight metal, such as aluminum with a circular cross sectional area. Tubular aluminum is preferred on grounds of low cost while offering an excellent combination of strength and lightness. While circular cross section tubes are preferred, any suitable configuration may be used, e.g., the support column  170  may comprise of hollow square or rectangular steel tube sections. Alternatively, the tubes  200  may be made of a plastic or fiber glass to ensure lightness and resistance to weathering.  
         [0061]    As shown in FIG. 7, each hollow tube  200  is preferably between about four feet and six feet in length with an external surface  210  defining an outer diameter  220 , and an internal surface  230  defining an inner diameter  240  and further defining a hollow cylinder  250 . Referring to FIGS. 1 and 6, a base hollow tube  200   a  has a predetermined inner diameter  240 , a bottom end  260   a  and a top end (the numeric-alpha “a” signifying the base tube, thus e.g. “tube  200   c ” would signify a tube two sections removed from the base tube  200   a  and would fit into the tube  200   b  which would fit into base tube  200   a ).  
         [0062]    The inner diameter  240  of the base tube  200   a  is chosen such that a second hollow tube  200   b  has a smaller outer diameter  220  than the inner diameter  240  of the base tube  200   a . Thus, the second hollow tube  200   b  fits snugly inside the base tube  200   a  and can easily be extended therefrom with about a foot of length of the second tube  200   b  remaining in the top end of the base tube  200   a.    
         [0063]    This pattern of selected diameters is repeated for the remaining hollow tubes  200 . For example, the inner diameter  240  of the second hollow tube  200   b  is chosen such that the outer diameter  220  of a third hollow tube  200   c  is slightly less than the inner diameter  240  of the second tube  200   b . Thus, tube  200   e  fits flush inside tube  200   d , and tube  200   d  fits flush inside tube  200   c  and so on. Thus, the tubes  200  may ultimately be collectively stacked in the base tube  200   a  in telescoping fashion.  
         [0064]    In one embodiment of the invention, each tube  200  has an upper end adapted to accommodate a securing bolt  290  (see FIG. 6) which fits transversely through a pair of through-holes in the form of aligned apertures  300  and  310 , respectively. The securing bolt  290  is held in place by a bolt securing pin  320 . For additionally safety, the bolt  290  may have a bolt securing pin  320  at both ends of the bolt  290 . Alternatively, one end of the bolt  290  is wider than at least one of the aperture holes  300  and  310 , and therefore only requires one securing pin  320 . Thus, each tube  200  can be extended from the previous tube  200  and is held safely in place without risk of the support column  170  collapsing.  
         [0065]    The support column  170  is attached to a base  330  comprising a set of legs  335  in the form of right angle tubes  340 , each of which comprise a first half  350  that straddles the ground  355  to define the base  330 , and a second half  360  that fits inside the bottom end  260   a  of the base tube  200   a.  The optimum number of right angle tubes  340  is at least three, with an angle of separation of not more than about 120° (i.e. 360/n, where n is the number of right angle tubes  340  forming the base  330 ). Thus, for four right angle tubes  340 , the angle of separation is about 90° (i.e. about 360/4 degrees)  
         [0066]    The number of right angle tubes  340  is governed, in part, by the inner diameter  240   a  of the base tube  200   a , since the hollow core or cylinder  250  must accommodate the second halves  360  of the right angle tubes  340 . Obviously, the inner diameter  240  of base tube  200   a  should be sufficient to accommodate at least three second halves  360 . It is well within the ordinary skill of the art to select the appropriate diameters of the component parts of the column  170  and base  330 .  
         [0067]    Optional cross plates  370  may be placed between or across pairs of right angle tubes  340 , as shown in FIGS. 5 and 6. Heavy items, such as sand bags  372 , may be placed on the cross plates  370  or directly on the ground portion  350  of the right angle legs  340  to provide extra stability to the mast  80 . Batteries, such as twelve volt batteries  125 , may be placed on the cross plates  370  to power the wireless video monitoring stations  85   f  via appropriate wiring. The batteries  125  also provide ballast thereby stabilizing the column  170  and thence mast  80   f . The position of the battery  125  is not critical and may be housed inside shroud  180  and form part of the wireless video monitoring station  85   f.    
         [0068]    The cross plates  370  may have underside grooves (not shown) to serve the additional function of keeping the ground component  350  of the right angle tubes  340  at an appropriate degree of separation  365 . Alternatively, flat plates  380  may be attached to the right angle tubes  340 , as shown in FIGS. 5 and 6, and a stake or spike  385  driven through an aperture in each flat plate  380  and thence into the ground to add extra stability to the mast  80   f  and further maintain a reasonable degree of separation  365  between the ground portions  350  of the right angle tubes  340 . Each spike  385  may comprise a flange end to stop the spike working loose from the legs  335  and detracting from the stability of the column  170 . The spike  385  is preferably a separate fixture that is attached to the end of each right angle tube  340  and then driven into the ground  355 . It should be understood that any suitable equivalent mast-securing device may be used to secure the mast  80   f  to the ground  355 .  
         [0069]    It should be understood that the support column  170  and base  330  may vary without detracting from the spirit of the invention. Thus, the bottom end  260   a  of base tube  200   a  may be inserted into a bearing ring  374  attached to legs terminating in flattened foot pads as described in U.S. Pat. No. 4,074,881 (“the &#39; 3 881 patent”) issued Feb. 21, 1978 to G. L. Bickford, which describes a tripod assembly for receiving and holding a support column  170  (referred to in the &#39;881 patent as a “standard 22”). The &#39;881 patent is incorporated by reference herein in its entirety.  
         [0070]    Referring to FIGS. 8A, 8B, and  9 , the near side mobile terminal  75 N comprises keys  411   a ,  411   b ,  411   c , and  411   d  configured to send command instructions to the far side video monitoring station  85   f , and more specifically the wirelessly controlled pan and tilt mechanism  95 F and the video camera  90 F.  
         [0071]    [0071]FIGS. 8A and 8B show an exterior and interior view of the near side handheld portable terminal  75   n , and FIG. 9 shows a diagrammatic interior view of the same. The handheld portable terminal  75   n  is adapted to receive audio and video signals from the wireless video monitoring station  85   f,  and to transmit command instructions to the remote monitoring station  85   f.  Antennae  393  and  394  are coupled to the transmitter  101   n  and the receiver  102   n,  respectively. An incoming signal containing video and audio information is received and processed by a near side radio frequency (RF) receiver  102   n , wherein video is displayed on a screen  76   n  and audio is directed to a speaker  400   n.    
         [0072]    It should be understood that the receiver  102   n  and transmitter  101   n  may be integrated to provide a transceiver  103   n  with the transmit and receive frequencies set converse to the transceiver  103   f  (see FIG. 2) such that the transceiver  103   n  processes an incoming RF signal received from the far side wireless video monitoring station  85   f  to extract a video signal and an audio signal for output via the screen  76   n  and speaker  400   n , respectively; and to transmit command instructions inputted via, e.g., keys  411   a ,  411   b ,  411   c , and  411   d  (possibly augmented by output from the voice recognition (“VR”) device  420   n , see FIG. 9) to the far side wireless monitoring station  85   f  to control the pan and tilt mechanism  95   f , video camera  90   f , and/or microphone  110   f.  For example, the keys  411   a  and  411   b  may be pressed to command the pan/tilt mechanism  95   f  to pan right and left, respectively (see FIG. 5); and keys  411   c  and  411   d  may be pressed to command the pan/tilt mechanism to tilt up and down, respectively. An optional selector  413  may be used to selected between different video monitoring stations  85   f  on the mast  80 .  
         [0073]    Depending on the content of incoming signal received by the handheld portable terminal  75   n , the incoming signal may, for example, be demodulated and de-multiplexed to output separate video and audio signals which are separately directed along lines  405  and  407  (FIG. 9) for output via screen  76   n  and electrical loudspeaker  400   n , respectively. It should be understood that the loudspeaker  400   n  may take several forms, such as an earpiece speaker.  
         [0074]    The handheld portable terminal  75   n  may comprise an optional voice recognition device  420   n  operably coupled to a microphone  110   n.  The microphone  110   n  picks up analog sound waves which may include speech containing command words purposefully uttered by a user, such as a coach  150 . The analog microphone signal is sent along line  425  to a voice recognition device  420   n  to detect command words in the analog microphone signal. Detected command words are directed along line  430  to augment the output of the keypad  409  and are transmitted as an RF signal to the far side wireless video monitoring station  85   f  via the transmitter  101   n.    
         [0075]    The voice recognition device  420   n  may be of conventional design with, e.g., a processor and memory configured to detect command words in the microphone analog signal. For example, a user may utter a variety of predetermined command words; e.g., a word such as “in” may be used to signify a command instruction to cause the far side wireless video camera  90   f  to zoom in. The logic steps for performing the voice recognition algorithm  435  are shown in FIG. 10.  
         [0076]    [0076]FIG. 10 shows a flow chart  435  that depicts the logic steps involved in speech recognition as performed by the voice recognition unit  420   n;  the terms “speech recognition” and “voice recognition” are hereinafter regarded as equivalent terms. An analog microphone signal  440  (see FIG. 10) traveling along line  425  (FIG. 9) is converted into a digital signal by an analog-to-digital (AD) converter at  445  to produce a digitized microphone signal (“DMS”) at  450 , and the features of the DMS are extracted at  455  to generate extracted features at  460 . The extracted DMS features are compared at  465  with features of known command words  467 . When the extracted DMS features match the features of one of the stored command words  467 , a command word is identified in the DMS and mapped at  470  to a command instruction (stored at  475 ) which is directed along line  430  (see FIG. 9) to augment the keypad output from  409 N (FIG. 9) at  480 .  
         [0077]    The command words may be categorized according to target apparatus. For example, the command words “in”, “out”, “on”, and “off” are suitable for instructing the cellular video camera  90   f  to zoom in, zoom out, switch on, and switch off, respectively. The command words “left”, “right”, “up”, and “down” are suitable command words for controlling the pan/tilt table  95   f  at the far side  60 . Other suitable command words are “start” and “stop” for controlling, e.g., the microphone  110   f  at the far side  60 . However, it should be understood that the command words might vary or include additional command words without detracting from the spirit of the invention. In addition, the invention is not limited to one method of voice recognition; any suitable method of voice recognition can be used to process the analog microphone signal  440 .  
         [0078]    Cellular Enabled Video Monitoring System  
         [0079]    In this aspect of the present invention a cellular based video monitoring system C50 (“CVMS C50”) is provided. The CVMS C50 provides video and optional audio over a long distance to a cell enabled near side portable handheld terminal  75   c.  The advantages and unique features of the CVMS C50 will become immediately apparent upon reading the below description of the invention.  
         [0080]    [0080]FIG. 11 shows a perspective environmental view of one embodiment of the CVMS C50. Broadly, a far side  60  cellular video monitoring station  85   c  transmits a video signal  480   a  to a near side  70  handheld portable terminal  75   c  via at least one cellular network, such as cell network  500 . The cellular video monitoring station  85   c  incorporates an integrated cell phone with a cell phone number. Thus, the cellular video monitoring station  85   c  can be called from any location using, e.g., a cell phone with video display capability. It should be appreciated that the invention also encompasses future land phones with video display capability, i.e., phones that connect to a land line and which are adapted to display video.  
         [0081]    Still referring to FIG. 11, the far side  60  is a home setting with a child  505  sitting in a playpen. Specifically, the wireless video monitoring station  85   c  comprises a transceiver  103   f  (see FIG. 2) for communicating with the cell network  500 ; and the handheld terminal  75   c  is essentially a hand held cell phone with a screen  76   n  (see FIG. 12) capable of displaying video originating from the station  85   c.  (The letter “c” indicates that the devices are able to communicate to a cell network.)  
         [0082]    The CVMS C50 is configured to transmit multimedia (e.g. video and optionally audio) using any known protocol or procedure of wireless communication including 3G (third generation) cellular technology or the like. 3G is an International Telecommunication Union specification for the third generation (1G was analog cellular, 2G was digital PCS) of mobile communications technology. When available, 3G wireless provides increased bandwidth of up to 384 Kbps when a device is stationary or moving at pedestrian speed, 128 Kbps in a car, and 2 Mbps in fixed applications. 3G works over wireless air interfaces known in the art such as WCDMA, CDMA2000 1× infrastructure solution, GSM (GPRS), and TDMA. The new EDGE (Enhanced Data for GSM Environment) air interface has been developed specifically to meet the bandwidth needs of 3G cell phones.  
         [0083]    For example, a transceiver in the handheld portable terminal  75   c  (i.e. the functional equivalent of the transmitter  101 N and receiver  102 N combined, see FIG. 9) may be configured to operate as a high-capacity-spread-spectrum RF transmitter and receiver over a communications channel as described in U.S. Pat. No. 5,166,951 (“the &#39;951 patent”), issued Nov. 24, 1992 to D. L. Schilling. The &#39;951 patent is incorporated herein by reference in its entirety. Additionally, the transceiver may utilize the CDMA method as described in U.S. Pat. No. 6,449,266 B1 (“the &#39;266 patent”), issued Sep. 10, 2002 to Hottinen et al. The &#39;266 patent is incorporated herein by reference in its entirety.  
         [0084]    Still referring to FIG. 11, the video station  85   c  communicates with a base station  510  in a first cell network  500 , and the handheld portable terminal  75   c  with a base station in a second cell network  500 . The base station  510  is one of a first plurality of base stations that define the first cell network  500 ; and second base station is one of a second plurality of base stations that define the second cell network  500 . More specifically, each base station in the first cellular network  500  defines one of a plurality of cells  530  which further define the first cellular network  500 ; and each base station in the second cellular network  500  defines one of a plurality of cells  535  which further define the second cellular network  500 . The size of each cell  530  and  535  depends in large part on the power rating of the corresponding base stations.  
         [0085]    The base stations of each cell network  500  and  525  operate under the control of a mobile service-switching center  540   a  and  540   b  (“MSC  540   a ” and “MSC  540   b ”, respectively) by means of intercellular land lines  545   a  between the cells  530  and  535 , respectively. As is well known in the art of cellular conventional cellular networks, each MSC determines which of the base stations in the cellular network  500  should process a call to the cell enabled video monitoring station  85   c  based on considerations such as signal strength between each available channel and the cell enabled video monitoring station  85   c.  Likewise the MSC  540   b  determines which of the base stations in cellular network  500  should process a call to the cell enabled handheld portable terminal  75   c  based on considerations such as signal strength between each available channel and the cellular handheld portable terminal  75   c.    
         [0086]    It should be understood that the exact configuration of a cellular networks  500  can vary, and FIG. 11 should not be viewed as constraining or limiting the present invention in any way. In addition, the cellular networks  500  may interconnect via satellite  565  and dish  567   a / 567   b,  or a cable connection (not shown). Thus, the cellular based video monitoring system C50 may be used over a considerable distance, including across state lines, continents, and international borders.  
         [0087]    Still referring to FIG. 11, a parent  550  is shown viewing the near side cell enabled handheld portable terminal  75   c  while traveling on a train  555 . The handheld terminal  75   c  is displaying video of the parent&#39;s child  505 . As should now be apparent, the parent  550  can obtain near instant feedback of their child&#39;s well being by simply dialing the cell number of the cellular video monitoring station  85   c.  However, it should be understood that the CVMS C50 could be set up to provide video of the inside of an owner&#39;s house; thus the house owner may use the cell enabled handheld terminal  75   c  to obtain confirmation that, for example, an intruder is not at the owner&#39;s house.  
         [0088]    Still referring to FIG. 11, the video monitoring station  85   c  is mounted on the pan and tilt mechanism  95   f  (see e.g. FIG. 2), which in FIG. 11 is shown located on sturdy piece of furniture  560 . The video camera  90   f  is shown looking down on the young child  505  playing in a home setting.  
         [0089]    Another embodiment of the cellular video monitoring station  85   c  is shown in FIG. 11A. In this embodiment the station  85   c  includes an optional far side loudspeaker  83   f.  The optional far side speaker  83   f  would allow the near side parent  550  to communicate e.g. verbal instructions or words of encouragement to their far side child  505  via the loudspeaker  83   f.  For the parent  550  to be heard by the child  505 , the parent  550  speaks into the near side microphone  110   n  of their near side portable handheld terminal  75   c  for their words, or other parent sounds, to be outputted by speaker  83   f.  It should be understood that components shown in FIG. 11A such as the receiver  102   f  and transmitter  101   f  are adapted, in a manner well known in the art, to communicate with a cellular network. A parent  550  and child  505  may engaged in a two-way conversation by virtue of microphones  110   f  and  110   n , and speakers  83   f  and  400   n.    
         [0090]    Video collected by the station  85   c  usually consists of a series of video frames. Where bandwidth is a problem, the video frames may be temporarily saved on a storage device  104   f  (see FIG. 2) operably coupled to the video monitoring station  85  (here  85   c ). JPEG compression may be used to save the video frames to the storage device  104   f.  JPEG compression may be used to transmit video frames regardless of bandwidth considerations. The storage device  104   f  may take various forms, such as electronic or magnetic media, e.g., an electronic memory chip and a conventional hard-drive, respectively.  
         [0091]    In one embodiment, the station  85   c  continuously saves predetermined time intervals of video as separate files (“video files”) on the storage device  104   f;  as storage space on the storage device  104   f  is used up, the oldest files are overwritten to provide an up-to-date library of video files available to an authorized user, such as a parent  550 . Thus, the parent  550  may use the handheld portable terminal  75   c  to dial up the video monitoring station  85   c  and via a suitable menu displayed on the screen  76 N select a saved video file on the storage device  104   f.  In response to such a selection, the station  85   c  performs a smart download to the mobile station  75   c , wherein the smart download is performed without further input from the parent. To this end, additional memory or storage  104   n  is provided on the handheld portable terminal  75   c  to store the smart download for later display on the mobile terminal&#39;s screen  76   n . Thus, the parent can later see a video file of their child without the frustration of dealing with bandwidth issues prevalent with current technology cellular networks (i.e. non-3G based cellular networks). It should be understood that the term “handheld portable terminal  75   c ” applies to any portable or mobile video device capable of communicating with, and receiving video from, a public cellular network. Examples of such terminals include a 3G and a 2.5G cell phone. Other examples include a 3G-enabled palm held computer such as a 3G personal digital assistant (“PDA”), and a laptop computer with 3G, or the like, technology.  
         [0092]    It should be further understood that the term “3G technology” or more simply “3G” is used herein to describe any technology available now or in the future which enables a portable terminal  75   c  to receive video input from any one of a plurality of geographically spaced base stations with sufficient broad band capability to handle video streaming. However, 3G availability remains patchy thus rendering a need for the smart download technology of the present invention.  
         [0093]    It should be understood that the term “cell enabled terminal”, as used in the context of the invention, applies to any device capable of communicating with a cellular system. Examples of such mobile terminals include a cellular telephone. Other examples include any device that has been modified or designed to communicate with a cellular network including, but not limited to: a palm held computer such as a cellular enabled personal digital assistant (“PDA”), and a laptop computer with cellular connect capability.  
         [0094]    In another embodiment of the invention, an authorization protocol  600 , as shown in FIG. 13, is used to ensure that only an authorized person, such as a parent, is able to view video from the video monitoring station  85   c.  For ease of description, the video monitoring station  85   c  has the components as shown in FIG. 2. The control circuit  100   f  is adapted to run a firewall algorithm  600 . An incoming cell call is received by the transceiver  103   f  at  610  and the call is checked at  620  and  630  for the required authorization code. The step of checking for an authorization code may involve comparing an offered authorization code against a data base of authorization codes held in hardware memory accessible to the firewall algorithm  600 . If an authorization code is identified the cell call is allowed to continue and video is transmitted in response to the cell call at  650  otherwise the call is disconnected at  640 .  
         [0095]    The authorization code may take several forms. For example, the authorization code may comprise of four digits tapped on the key board of the handheld terminal  75   c , wherein the extra four digits are appended to cell phone number of the cell enabled video monitoring station  85   c.    
         [0096]    In a further embodiment of the invention a method is provided for video monitoring an area or activity that diminishes invasion of privacy and “big brother is watching you” concerns, comprising the steps of: providing an array of fixtures at pre-determined locations in an area, wherein each fixture is adapted to hold a substantially vertical mast; fitting vertical masts with opposite ends to the fixtures, wherein one mast is fitted to each the fixture, and wherein one opposite end of each mast is securely attached to each fixture and the other opposite end of the mast comprises a video monitoring system, thereby providing an array of video monitoring masts capable of video monitoring an area or an activity in the area; and removing the array of video monitoring masts from the fixtures thereby concluding the video monitoring of the area, wherein the step of removing the array of video monitoring masts serves to diminish invasion of privacy and “big brother is watching you” concerns.  
         [0097]    The step of providing an array of fixtures may further comprise providing a plurality of pre-drilled holes at pre-determined locations in the area, wherein each of the pre-drilled holes is adapted to accommodate one of the vertical masts.  
         [0098]    The method of video monitoring an area or activity may further comprise the step of publishing information for public consumption, wherein the published information includes a promise that the video monitoring system is of a temporary nature and will be dismantled, wherein the steps of publishing the information and removing the array of video monitoring masts serves to diminish the “big brother is watching you” concerns.  
         [0099]    It is to be understood that the present invention is not limited to the sole embodiments described above, but encompasses any and all embodiments within the scope of the following claims.