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CLAIMS OF PRIORITY 
       [0001]    This patent application claims priority from the Provisional Patent Application No. 2689/CHE/2012 and No 2690/CHE/2012 filed on 4 Jul. 2012. It also claims priority from Provisional patent applications No 3042/CHE/2012, No 3044/CHE/2012 and No 3045/CHE/2012 filed on 25 Jul. 2012. 
       FIELD OF TECHNOLOGY 
       [0002]    This disclosure relates generally to technical fields of Occupational Health protection from sun light, and comfort, involving mechanism and computer, and in one embodiment to a device to shade a person in large open space, from a height by means of shading units moving at large height in synchrony with the movement of the person. 
       SUMMARY 
       [0003]    A device, system, and method to provide shade from bright sunshine from large height, by means of shading units which moves in synchrony with a person, a animal to be shaded and synchronized with the angle of solar radiation so that the place where the person is present is always shaded and additionally cool air applied to small local area by directed pulsed air jets, is disclosed. In one aspect, the device addresses the problem of occupational hazard from bright sunshine for people working in large open spaces, involved in sports, in recreation at beach etc, leading to long periods of exposure to sun and especially professional players with long practice sessions. The devise is a recreation enabler in sports for corporate executives for whom hot sunshine and high temperature is a disincentive and discouraging and this device allows full utilization of stadiums when not having tournaments. 
         [0004]    In another aspect, the prior art has shading structures covering entire stadium which is expensive to build and the natural effect of open sun light is obstructed and diminished. The present invention maintains the beautiful natural effect of sunlight. Prior art has devises wherein hydrogen balloons tied by string to the person to be shaded from small height, but this obstructs the activity and the view of spectators. People have thought of large artificial cloud and shading structures held by helicopters to shade from great height but this is going to be expensive and consumes high power and also high noise level, aerodynamic stability and safety problems especially when large crowds are present below. Air conditioning of entire stadium is very expensive and a power guzzler. The present invention is low on infrastructure cost and low on power consumption compared to prior art while still giving the comfortable condition for work and play in the most economical and compact manner. 
         [0005]    Prior art quoted by preliminary search authority under PCT being general state of art, are US 2011315811 A1 where a lighter than air vehicle is used for shading and has the problem of wind management as wind effects increase with size and air vehicle has low maneuverability and serious safety problem for persons below on ground in case of the unit or a component falling off from large height and does not involve dynamic matching of person to be shaded with the position of the air vehicle. The Japanese patent quoted being JP 2008212421 A uses flying shading unit to shade a person does not use cameras to capture the fast changing position of the person and does not synchronize shading unit with anticipated movement with manual support where necessary, as required in a sport event and also does not correct the problem due to wind specially when shading unit is at large height and has no feedback of shading unit position error. The other quoted patent U.S. Pat. No. 2,693,230 being general state of art. The present invention over comes the problems in the prior art. 
         [0006]    The matching of the pattern of shade in small-required area to the pattern of location of person dynamically within required time as in sport event using image of person being shaded and image of shading unit for feedback and correction with wind management and particularly since the shading unit is small and is located at large height, the pattern matching is the inventive major step in working of the device. The use of aerodynamic control for the shading unit and split arrangement of film in shading unit is the most essential ingredient for the proper working of the device since it is at large height and subject to wind. Drive for the shading unit is one by means of cable and one by on board electric motor and one by compressed air jet. The suspension of shading unit is by cable, which is ideal for most continuous use conditions. For rapid and urgent deployment, the shading unit with propeller drive to lift and move, having a single cable wire to supply electrical power to the propeller drive motor, is used in spite of difficulty in stabilization under windy condition. The presence of flexible and light structure of shading unit is essential for safety, using water filled rubber bags for counter weight in cantilever suspension, along with safety cable to hold the unit. 
         [0007]    The plurality of camera capture position coordinates of the person to be shaded selected with distinguishing color of dress and tag when attached, based on the coordinates of person to be shaded, the right shading unit is selected as per deployment plan and shading unit is moved to the required position calculated, thereafter the persons location is tracked and predicted by software by extrapolation and velocity calculation and where needed predicted by the help of operator who sees image on monitor screen and moves cursor pointer from his experience and direction of movement of the person, taking into account sharp changes in direction as it occurs. 
         [0008]    The scope of the invention extends to workers in construction site and agricultural farms and sea rigs, where wearing full clothing to cover in hot humid weather will be uncomfortable due to sweat accumulation and resulting uneasiness, so when shaded by the device dynamically the uncomfortable itching sensation is not there leading to improved productivity of work. Tourists in beach specially in tropical areas can enjoy the beach side at any time of the day of their choice due to the shading device. The device allows horse racing to be conducted even in hot countries. No where in the world is present a shading system as of the sort of above device in any sports stadium where the shade pattern follows the location of the player. It is surprising, by looking at old to present books on sports and open space activities, the way people have been tolerating blazing sun through out history with some relief from hat and umbrella where fast activity is not involved. It is unfair that sports heros are being subjected to hot sun while the spectators of sports sit under shaded comfort. People with sun allergy will benefit from the device. Women who generally avoid sunshine to protect their fair white complexion can participate in sports. 
         [0009]    The device, systems, and methods disclosed herein may be implemented in any means for achieving various aspects, and may be executed in a form of a machine-readable medium embodying a set of instructions that, when executed by a machine, cause the machine to perform any of the operations disclosed herein. Other features will be apparent from the accompanying drawings and from the detailed description that follows. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0010]    Example embodiments are illustrated by way of example and not limitation, in the figures of the accompanying drawings, in which like references indicate similar elements and in which: 
           [0011]      FIG. 1  is a aerial view of stadium with dynamic shading devise showing stadium with shading units at large height, according to one embodiment. 
           [0012]      FIG. 2  is a view of person in shaded zone, with shade from shading unit, according to one embodiment. 
           [0013]      FIG. 3  is a cross section view of shading unit, cable drive, positioning and aerodynamic wind control cable, according to one embodiment. 
           [0014]      FIG. 4  is shading unit having slot with flap for wind management, according to one embodiment. 
           [0015]      FIG. 5  is a shading unit with cantilever arm suspended from supporting cable, according to one embodiment. 
           [0016]      FIG. 6  is a Cantilever arm with shading unit near border and camera unit on gimbal mounting, according to one embodiment. 
           [0017]      FIG. 7  is a shading unit with propeller drive and buoyancy balloon, according to one embodiment. 
           [0018]      FIG. 8  is a shading unit with on board motor drive and remote radio receiver according to one embodiment. 
           [0019]      FIG. 9  is a shading unit with pneumatic drive, according to one embodiment. 
           [0020]      FIG. 10  is a cross section view of double layer based shading unit, according to one embodiment. 
           [0021]      FIG. 11  is a side view of double layer based shading unit, according to one embodiment. 
           [0022]      FIG. 12  is a system view of a multiple cable spool drive, according to one embodiment. 
           [0023]      FIG. 13  is a system view of entire device for race course for horses, according to one embodiment. 
           [0024]      FIG. 14  is a system view of dynamic shading with cantilever unit at curves, according to one embodiment. 
           [0025]      FIG. 15  is a system view of entire device on the beach with floating towers based cable hold, according to one embodiment. 
           [0026]      FIG. 16  is a system view of entire device for shading construction workers, according to one embodiment. 
           [0027]      FIG. 17  is a system view of dynamic shading of workers at road under construction, according to one embodiment. 
           [0028]      FIG. 18  is a view of pulsed cold air pipe line with rotating popup nozzle, according to one embodiment. 
           [0029]      FIG. 19  is a view of cold air nozzle with rotation drive motor and retraction solenoid, according to one embodiment. 
       
    
    
       [0030]    Other features of the present embodiments will be apparent from the accompanying drawings and from the detailed description that follows. 
       DETAILED DESCRIPTION 
       [0031]    A device, system, and method to provide shade from bright sunshine from large height, in one embodiment about 100 feet from ground, by means of shading units which move in synchrony with the movement of person, animal to be shaded and the angle of solar radiation so that the place where the person is present is always shaded, is disclosed. Although the present embodiments have been described with reference to specific example embodiments, it will be evident that various modifications and changes may be made to these embodiments without departing from the broader spirit and scope of the various embodiments. 
         [0032]      FIG. 1  is a aerial view of stadium with dynamic shading devise showing stadium with shading units at large height, according to one embodiment. Particularly,  FIG. 1  illustrates a stadium  101 , spectator gallery  102 , cable tower  103  which is taller than floodlights generally used in stadium, shading unit  104  present at a high level, cantilever arm with shading unit near border  105 , player who is shaded  106 , the bright sun  107 , and cable of shading unit  108 , according to one embodiment. 
         [0033]    In example embodiment, the shading units do not obstruct the view of spectators 
         [0034]      FIG. 2  is a view of a person in shaded zone, according to one embodiment. Particularly,  FIG. 2  illustrates the shading unit at large height which moves to a position calculated based on the suns angular position in such a way that the shade forms a zone around the person  201  who has no need to wear a cap, the shaded zone  202 , a shading unit  203 , cable of shading unit  204 , the sun  206 , according to one embodiment. 
         [0035]      FIG. 3  is a cross section view of shading unit, cable drive and aerodynamic wind control cable, according to one embodiment. Particularly  FIG. 3  illustrates the cable tower  301 , shading unit  302 , electric motor with cable spool  303 , electric motor for wind control cable  304 , wind control cable  305 . 
         [0036]    The cable spools and drive motor in case of stadium is on the roof of spectator gallery. 
         [0037]      FIG. 4  is a shading unit having slot with flap for wind management, according to one embodiment. Particularly,  FIG. 4  illustrates a shading unit  400 , support cable of the shading unit  401 , cable for wind control  402 , slot  403  to equalize pressure on both sides over which sits flap, drive cable for the shading unit  405 , according to one embodiment. 
         [0038]      FIG. 5  is a shading unit with cantilever arm suspended from supporting cable, according to one embodiment. Particularly,  FIG. 5  illustrates the shading unit which moves on the cantilever arm  501 , cantilever arm  502 , counter weight  503  made of water filled rubber bag, supporting cable  504 , cable for movement and rotation of arm  505 , control and stabilizer cable for shading unit  506 , according to one embodiment. 
         [0039]      FIG. 6  is a cantilever arm with shading unit near border and camera unit on gimbal mounting, according to one embodiment, Particularly,  FIG. 6  illustrates the tower  601 , cantilever arm  602 , shading unit  603 , camera unit on gimbal  604  for getting persons location coordinates, and shading unit position for feedback, pole for fixing camera unit  605 , drive cable for shading unit  606 , electric drive motor  607 , person shaded  608  according to one embodiment. 
         [0040]    The rotation of cantilever arm and movement of shading unit is by means of electric motor controlled by computer. 
         [0041]      FIG. 7  is shading unit with propeller drive and buoyancy balloon, according to one embodiment. Particularly,  FIG. 7  illustrates the shading unit  701 , electric motor for driving propeller  702 , propeller  703 , buoyancy balloon with hydrogen gas  704 , slot with flap for wind pressure reduction  705 , frame  706 , power and control signal cable  707 , micro controller for propeller and motor control  708 , according to one embodiment. 
         [0042]      FIG. 8  is shading unit with on board motor drive and remote radio receiver according to one embodiment. Particularly,  FIG. 8  illustrates the shading unit  800 , frame  801 , electric motor  802  to move shading unit by winding in cable  803  on spool  804 , flap for wind management and control of shading unit  805 , flap moving electric motor with cable  806 , radio control receiver with microprocessor  807 , according to one embodiment. 
         [0043]      FIG. 9  is a shading unit with pneumatic drive using compressed air, according to one embodiment. Particularly,  FIG. 9  illustrates the shading unit  901 , flexible hose pipe for compressed air  902 , control valve  903 , nozzles  904  and  905 , according to one embodiment. 
         [0044]      FIG. 10  is a cross section view of double layer based shading unit, according to one embodiment. Particularly,  FIG. 10  illustrates the frame  1001 , upper layer film  1002 , lower layer film  1003 , suspender through which the support cable passes  1004 , according to one embodiment. 
         [0045]    This arrangement is mainly to manage wind. 
         [0046]      FIG. 11  is a a side view of double layer based shading unit, according to one embodiment. Particularly,  FIG. 11  illustrates frame  1101 , upper layer film  1102 , lower layer film  1103 , drive cable  1104 , wind control cable  1105 , according to one embodiment. 
         [0047]      FIG. 12  is a system view of a multiple cable spool drive, according to one embodiment. Particularly,  FIG. 12  illustrates the drive motor  1201  for forward drive, shaft  1202 , belt drive  1203 , clutch unit  1204  for forward drive, brake and hold unit  1205 , drive cable  1206  on spool  1207 , brake control cable  1208  and clutch control cable  1209  both operated by solenoids controlled by computer, clutch for reverse drive  1210 , drive motor  1211  for reverse drive, according to one embodiment. 
         [0048]    The actuate and de actuate timing of the clutch and brake is calculated by the computer based on the position needed for shading unit. The cable spool at one end winds up while the cable spool at other end unwinds. 
         [0049]      FIG. 13  is a system view of entire devise for race course, according to one embodiment. Particularly,  FIG. 13  illustrates the race course with horse track  1301 , horse with rider  1302 , tower at border  1303 , main support cable  1304 , shading unit  1305 , support cable for shading unit  1306 , drive cable of shading unit  1307 , cool air dispenser  1308 , wind control cable of shading unit  1309 , the bright sun  1310 , according to one embodiment. 
         [0050]      FIG. 14  is a system view of dynamic shading with cantilever unit at curves, according to one embodiment. Particularly,  FIG. 14  illustrates the horse track at curve  1401 , horse with rider  1402 , tower for cantilever  1403 , cantilever  1404 , shading unit  1405 , electric motor with cable drive for shading unit  1406 , the bright sun  1407 , according to one embodiment. 
         [0051]      FIG. 15  is a system view of entire devise on the beach with floating towers based cable hold, according to one embodiment. Particularly,  FIG. 15  illustrates the beach  1501 , the sea  1502 , tower near sea front  1503 , main support cable  1504 , support cable for the shading unit  1505 , shading unit  1506 , drive cable for shading unit  1507 , wind control cable of shading unit  1508 , person on beach  1509 , person in the sea  1510 , the bright sun  1511 , camera on gimbal  1512 , floating platform with tower  1513  anchored by cables to sea floor, tower arm holding the cable end support with sliding clutch  1514  to which the main support cable is connected, according to one embodiment. 
         [0052]    The person on Beach to be shaded is identified by unique color tag. 
         [0053]      FIG. 16  is a system view of entire devise for shading construction workers, according to one embodiment. Particularly,  FIG. 16  illustrates the building under construction  1601 , tower to hold cables  1602 , main support cable  1603 , support cable for suspension of shading unit  1604 , shading unit  1605 , drive cable of shading unit  1606 , wind control cable of shading unit  1607 , cantilever unit at border  1608 , worker on the ground  1609 , worker on roof  1610 , the manager on ground  1611 , cool air pulsed jet dispenser  1612 , air cooler and pump unit  1613 , the bright sun  1614 , according to one embodiment. 
         [0054]    The device is most useful to workers on oil rigs and large ship platform where weather condition is very harsh. 
         [0055]      FIG. 17  is a system view of dynamic shading of workers at road under construction, according to one embodiment. Particularly,  FIG. 17  illustrates the road being constructed  1701 , road paving by one of asphalting machine  1702 , tower with wheel base to allow shifting of the devise  1703 , main support cable  1704 , support cable for shading unit  1705 , shading unit  1706 , cable drive for shading unit  1707 , the worker  1708 , the bright sun  1709 , according to one embodiment. 
         [0056]    The towers are mounted on wheels for mobility 
         [0057]      FIG. 18  is a view of pulsed cold air pipe line with rotating popup nozzle, according to one embodiment. Particularly,  FIG. 18  illustrates the cold air supply pipe  1801 , nozzle  1802 , person provided with cool air  1803 , ground  1804 , air cooler and pump along with storage tank  1805 , according to one embodiment. 
         [0058]      FIG. 19  is a view of cold air nozzle with rotation drive motor and retraction solenoid, according to one embodiment. Particularly,  FIG. 19  illustrates the nozzle  1901 , swivel joint  1902 , rotation drive electric motor  1903 , cold air supply pipe line buried in ground  1904 , retracting solenoid  1905 , power supply cable and control signal cable  1906 , ground  1907 , according to one embodiment. 
         [0059]    The area where the person is present only is locally cooled by pulsed air jets. 
         [0060]    Although the present embodiments have been described with reference to specific example embodiments, it will be evident that various modifications and changes may be made to these embodiments without departing from the broader spirit and scope of the various embodiments. 
         [0061]    In addition, it will be appreciated that the various operations, processes, and methods disclosed herein may be embodied in a machine-readable medium and/or a machine accessible medium compatible with a data processing system (e.g., a computer system), and may be performed in any order (e.g., including using means for achieving the various operations). Accordingly, the specification and drawings are to be regarded in an illustrative rather than a restrictive sense.

Summary:
A device, system and method of shading person large open area from large height without obstruction to view, work and play by matching shade pattern formed by shading unit for the given sun position and the location of the person on land and building, by means of shading units moved by control from computer and by manual control and providing local cooling by directed, pulsed cold air jet. Shading unit supported by cables and at periphery shading unit on cantilever based support is used and for small areas. The above devise and system is to protect people from occupational and environmental harmful effect of bright sunshine causing skin cancers and allergy and which so far has been tolerated quietly by people involved in sports, construction, agriculture, sea rigs, and recreation in beach.