the apparatuses and methods are now described in greater detail , with reference to the accompanying drawings . referring to fig1 , each jump site 10 consists of a takeoff 12 , lip 24 , mid - section or table 14 , knoll 15 and landing area 16 . as well , preceding the jump site 10 is an in - run 18 , and following the jump site 10 is an out - run 20 . a first detector 22 is preferably located at about the lip 24 of the takeoff 12 . a second detector 26 is preferably located beyond the landing area 16 and about at the beginning of the out - run 20 . referring to fig2 , the first and second detectors 22 , 26 are capable of detecting the passage of a skier through the jump site 10 . according to a preferred embodiment of the present invention , the first and second detectors 22 , 26 each create respective infrared barriers 28 , 30 . ( other technology for detecting the passage of a skier is known by one skilled in the art .) each detector 22 , 26 provides an emitter 32 and a receiver 34 . when a skier who is using the jump site 10 breaks the infrared barrier 28 produced from the first detector 22 , a first signal ( not shown ) is produced . upon landing on the landing area 16 and skiing downhill into the out - run 20 , the skier will break the infrared barrier 30 produced by the second detector 26 , which will in turn produce a second signal ( not shown ). these first and second signals can each be in the form of a pulse . although the first detector 22 could be located at a variety of different locations on the takeoff 12 , it is preferred that it is situated at the lip 24 , as skiers inspecting the jump site 10 who are not actually catching air may climb up on the takeoff 12 and inadvertently affect the proper functioning of the first detector 22 if it is not positioned at the lip 24 . similarly , the second detector 26 , which could be located at a variety of different locations on the landing area 16 , is best situated at the beginning of the out - run 20 , as it is most likely to properly perform its function once skiers have travelled all the way to the out - run 20 , and not simply across just a portion of the landing area 16 . the first and second signals are transmitted to a processor 36 for processing . when the processor 36 receives any signal , it processes that signal and produces a message signal ( not shown ). this message signal is then sent to a communicator 38 for communicating the message signal to a next skier 40 . the communicator 38 may consist of any appropriate form of visual communication . a simple form of communication such as a traditional traffic light having red and green signal lamps is preferred . whatever the exact form of the communicator 38 , it ought to be able to provide a signal that will be visible outdoors where , on numerous occasions , heavy snow and blinding sunlight make visibility difficult . although not shown in fig2 , the processor 36 and the communicator 38 may physically be together as one object such that the first and second signals are sent directly to one physical location for eventual communication to a next skier 40 . under the present embodiment , the processor 36 produces a particular message signal once it receives a first signal from the first detector 22 . preferably , this particular signal produces a red light with regards to the communicator 38 . this red light signals to the next skier 40 that the jump site 10 is in use and that it is not safe to proceed . once the second detector 26 produces a second signal , the processor 36 produces a different message signal , which , preferably , results in a green light being produced by the communicator 38 . the green light signals to the next skier 40 that the jump site 10 is no longer in use and that it is safe to proceed . the advantage of having either a “ red ” or a “ green ” message signal being communicated is that at any given time a next skier 40 will be aware of whether or not it is safe to proceed . this continuous communication to a next skier 40 is achieved by having the message signal , regardless of whether it is in a “ red ” or “ green ” state , also be a continuous signal . in other words , the communicator 38 produces a solid and continuous display of the message signal . the transmitting of the first and second signals from the first detector 22 and second detector 26 , respectively , to the processor 36 , can be achieved via hard wire 42 , 44 , or via wireless communication using well - known technology ( not shown ). likewise , the transmitting of the message signal from the processor 36 to the communicator 38 may be achieved via a hard wire 46 or via wireless communication ( not shown ). according to another embodiment of the present invention ( fig3 ), there is provided only one detector in the form of an exit detector 50 . the exit detector 50 provides an emitter 32 and a receiver 34 , which in turn provide an infrared barrier 56 . upon landing on the landing area 16 and skiing downhill into the out - run 20 , a skier will break the infrared barrier 56 produced by the exit detector 50 , thereby producing an exit signal ( not shown ). the exit signal is transmitted , either via hard wire 54 or wireless communication ( not shown ) as described above , to a signaller 52 for processing and signalling to a next skier 40 . preferably , the signaller under this embodiment will have one form of visual communication , namely , a green signal lamp , and will only be displayed for a short period of time ( i . e ., approximately five seconds ), as it would be inappropriate for a green signal to continue to be illuminated while a next skier 40 is entering or is inside a jump site 10 . this alternative embodiment , which uses only an exit detector 50 , achieves the desired result of providing improved safety on ski jump sites 10 , as it communicates to a next skier 40 the status of whether a preceding skier has exited the landing area 16 . although a next skier 40 is not provided with an “ in - use ” signal regarding the jump site 10 , a safety - critical signal as to whether the skier has departed the jump site 10 is nevertheless provided in the exit signal . in practice , this embodiment is best implemented where there is continuously a next skier 40 who is monitoring the signaller 52 . other aspects of the present invention that are desirable include appropriate traffic management of the jump site 10 . this includes items such as fences ( not shown ) for ensuring non - jumping traffic stay clear of the landing area 16 and the corresponding second detector 26 or exit detector 50 , as the case may be , so as to not complicate the transmitting of signals . also important is the ability for an authorized employee or volunteer , such as a ski patrol , to deactivate the apparatuses in the event that , for example , the ski jump site 10 becomes crowded due to the evacuation of an injured skier or a ski jump competition is being hosted on the ski jump site . such a deactivation could be accomplished via the actuating of a switch ( not shown ) on the processor 36 , the signaller 52 , the communicator 38 and / or a detector 22 , 26 , 50 , as the case may be , and could result in the continuous display of either a red or green signal , or no signal , as the case may be . with regards to powering the detectors 22 , 26 , 50 , the processor 36 , the communicator 38 and the signaller 52 , as the case may be , a person skilled in the art would appreciate that there exist a variety of means for accomplishing this . one possible means would be through the use of batteries in each of the components . another possible means would be through solar power . yet another means would be via cable connection to the ski resort &# 39 ; s own regular power supply . these possibilities are not exhaustive . with regards to the construction and physical characteristics of the detectors 22 , 26 , 50 , the processor 36 , the communicator 38 and the signaller 52 , as the case may be , each will have to be durable enough to withstand not only cold temperatures but also harsh wind , snow , rain and other forms of precipitation . furthermore , they must be attached to appropriate posts ( not shown ) wherein the posts are securely planted in the snow so as to hold the respective component in place . given the existing technology in nordic ski jumping sites and alpine race timing systems , one skilled in the art would have little difficulty in locating appropriate supplies . while particular embodiments of the present invention have been shown and described , changes and modifications may be made to such embodiments without departing from the true scope of the invention .
an apparatus and method for the improving of ski jump safety comprises a first detector for detecting a skier entering a jump site , wherein the first detector produces a first signal , a second detector for detecting the skier exiting the jump site , wherein the second detector produces a second signal , a processor for processing the first signal and the second signal , wherein the processor produces a message signal , and a communicator for communicating the message signal to a next skier . also , an apparatus and method for the improving of ski jump safety comprises an exit detector for detecting a skier exiting a jump site , wherein said exit detector produces an exit signal , and a signaller for signalling said exit signal to a next skier .