fig1 is a block diagram of a conventional pinball machine . such game may be conventionally realized by electromechanical technology , as follows : the overall game has the form of a shallow rectangular box 20 with a glass lid . the box is inclined over a small angle that for example can be in the range of 2 - 5 degrees . one end of the box has a semi - circular shape 28 . under insertion of a coin , the game injects a bail through injector 22 , which &# 34 ; falls &# 34 ; against the plunger 70 . through pulling the plunger button 26 against the force of coiled spring 24 , the bail may roll further back . release of the button will send the ball up and then along semi - circle 28 . it may or may not reach final stop 30 . without user interaction , the ball will eventually roll to terminal hole 36 and then vanish from sight . alternatively , the user by means of moving the flippers 38 , 40 , through respectively associated buttons 42 , 44 , may try to give the approaching ball a renewed impetus away from the terminal hole 36 to prolong the game . furthermore , the ball may hit dead bumpers 46 , 48 and change its course of motion . also , the ball may hit living bumpers 50 , 52 , 54 , 56 , which may impart a repulsive impetus to the ball to thereby raise its speed . finally , further terminal holes 54 , 56 may have the same function as terminal hole 36 . the art of playing this type of game is directed to keep the ball in the game as long as possible . various events may give rise to increase the player &# 39 ; s score , such as hitting living or dead bumpers , or reaching a particular terminal hole . also , certain events may influence the outcome of subsequent events , such as raising the score relating to a particular bumper . the popularity of successive generations of such games have been based on new gadgets , particular programming , audio - visual extras , and styling . in addition to operating the flipper buttons , users have tried to influence the bail motion by moving the housing of the game . for example , a ball may waver on bumper 46 between going left and going right . going left means hitting living bumper 54 and getting the associated score , and probably also a new move upwards . going right means a long move towards terminal hole 36 , and possibly the end of the game , if moving the flippers fails to throw the ball upwards . the user person may thus try to influence the ball &# 39 ; s path . it has been found that the housing of an electromechanical game should be able to move a little bit . a tilt detector has conventionally been added to detect extraneous motions effected by the user , that could influence the outcome of the game in an unwanted manner , or even damage the whole set - up . the game as described , of which only a very elementary outline has been sketched up to now , may be translated to a purely digital electronic realization , wherein a pc type display is used with its associated keyboard and sound channel . in this respect , fig2 is a diagram of a comprehensive version according to the invention . the principal element is computer 106 , which displays a simulated game field 80 , in which plunger , bumpers , flippers and terminal holes have been indicated in a schematic manner . also the ball is displayed ( not shown ) along with its moving on the field and its interference with the various other elements . the equations of the ball motion , including its gravity component through the simulated inclination of the field , are stored in the computer and the position of the ball is computed and displayed many times per second . also the display of the various display elements is controlled along lines 84 , 86 , 88 , 90 , 92 , 96 . in fact , the display may be a conventional lcd field , of which the orientation may in principle have an arbitrary value . alternative realizations are by picture tube or projection t . v . in consequence the positions of the displayed elements , and hence the various control lines that may be either hard wires of soft connections , will relate to particular addresses in the display memory . the game score is displayed in a display 82 that is connected to the computer . the latter display may be part of the main display field . the game has a user interface with three buttons for left and right flippers and plunger , respectively , that are connected to the computer by means of connections 98 , 94 , and 102 , respectively , for feeding the computer with control signals . the electromechanical versions of the game have already featured additional buttons , such as for controlling a second pair of flippers , as well as a button for controlling the start of a new game . furthermore , the user interface has a motion detector / transducer that is connected to the computer via line 100 . moving the interface housing may give a signal to the computer . by itself , motion detectors have been in common use for signalization and feedback purposes . now , if the imparted motion is below a particular level , it is translated into a term in the equation of motion of the ball , and a dynamic shifting of the displayed image in the intended direction . for example , when wavering on a dead bumper , instantaneous movement of the housing may be translated into a motion component of the ball of equal magnitude , but of opposite sign . moreover , the transducer gets a control signal from the computer in such a way as to simulate a mechanical shudder of the housing and / or the display . the frequency and intensity should be chosen for appropriate effect on a person : 0 . 3 hz to 10 hz is expected to be an effective frequency range . the amplitude may be from a fraction of a millimeter to several millimeters peak - to - peak . if the user - imparted motion is however above a particular level , the transducer may give a more severe signal , and also the display may give a tilt signalization . this instantaneously terminates the game . the low - frequency transducer may for example be one ore more low - frequency loudspeakers , such as a so - called woofer , or in general , any applicable electromechanical actuator . the signalization to the user person is then through the person &# 39 ; s hands which presumably to a great deal rest on the user interface box 78 . line 104 connects a sound output mechanism to the computer . this may also give a low frequency warning to the user person under control of the motion detector . if required , various switches and contacts in the device may be exchanged for force - proportional components . in a more elementary realization , the low - frequency physical interactions are generated even without an input from the motion detector , but directly as a reaction of certain interactions in the game . in the above , the packaging may have various forms . in the first , the personal computer is used as far as possible , so that the display is the standard computer display , the buttons are standard keyboard buttons , and the sound output is by a soundblaster card . the plunger force is adjusted by the duration of actuation of the plunger button . the movement imparted by the user then is the moving of the keyboard itself , or more general , of the input device , in case of force activation . in the second realization , the mechanical user interface is a special element , but both the computer and the display are standard pc - like facilities . fig3 is such a user interface device for use in the invention . box 110 may be 30 centimeters wide , 10 centimeters deep , and 10 centimeters high . it has left hand flipper button 120 , right hand flipper button 116 , plunger button 114 , and tether cable 112 . motion detector - transducer 118 sits invisibly within the housing . it may be sensitive for particular directions of motion , such as left - right and forward - backward , separately . by itself , motion detectors are conventional elements . inside the computer , the motion detection signal is analyzed and compared with various threshold levels . the levels may be different in the various directions . the motion vector is then used for controlling the ball motion . if the motion imparted to the keyboard or , more generally , to the user interface representative elements , surpasses a particular threshold , various danger signals may be produced , such as may be consummate to the nature of the game , such as thunder , or even lower frequency sounds that remain unheard . preferredly , the vibrations are transversal , as experienced by a user . if the imparted motion is still more intensive , the tilt threshold may be passed , which instantly stops the game , under presentation of further clue signals to the user . summarizing , the invention provides for low - frequency feedback signals to the user . the actual cause of the feedback signal may be the movement of the runner , such as its impact on a bumper element . another cause of the motion may be feedback from the motion that the user person undertakes to impart to the housing and in consequence , to the runner element . fig4 gives an artist &# 39 ; s impression of a first embodiment of the invention . the embodiment is a rather simple pinball machine , provided with a big display for the game itself , a control box at the front end , provided with plunger control and flipper control buttons , a coin slot , and a general supporting structure . the inclination angle of the display may be limited to a few degrees , but another range of values would be feasible as well . artificial gravity could in principle be combined with a horizontal playing field . the score display may be effected on the main display field . the computer may , or may not be integrated in the supporting structure . fig5 gives an artist &# 39 ; s impression of a second embodiment of the invention . here , the pinball machine is more elaborated , in that a separate display arrangement is placed above the standard playing field . the internal facilities of the two versions may be largely identical . fig6 gives an artist &# 39 ; s impression of a third embodiment of the invention . here , the hardware is pc - based . as shown , the system has a pc display , a pc processor , and a control unit according to the general embodiment of fig3 . fig7 gives an artist &# 39 ; s impression of a viewer helmet that is generally shown from the rear side of the user &# 39 ; s head . the prime element of the helmet in the context of the present invention is a structure containing transmission elements for each of the user person &# 39 ; s eyes . the elements are transmissive or not , in accordance with the reception of a control signal . various technological solutions are feasible , inter alia by lcd . the non - transmittive state effects a dispersion of the incident light . furthermore , the helmet may or may not contain loudspeakers or &# 34 ; head phones &# 34 ;. fig8 shows a control arrangement for the viewer helmet . the helmet structure is symbolized by block 130 , which for each eye of the user has a transmission element 132 , 134 , according to an appropriate geometrical configuration . the transmission control signal is applied by control element 136 in such a way that the transmission of the elements is controlled periodically with mutually opposite phases . the game display field is symbolized by structure 144 having an actual dispiay field 146 . the display is effected from a memory that stores alternate frames 140 , 142 , under control from synchronization element 138 , that interacts with control element . in this manner , the organization may be such that for example the user &# 39 ; s left eye sees only the ` odd ` frames , whereas the right eye sees only the ` even ` frames . in this manner , a shuddering display movement , as well as a stereoscopic effect can be invoked , both of which induce a three - dimensional aspect of the display . by itself , the use of stereoscopic effects in the representation of movies has been well - documented , allowing its extended use as suggested supra . all these effects can be simulated in synchronization with the physical movement imparted to the control box . line 150 connects to the processor for updating the dispiay . various further extensions can be envisioned to the invention . according to a first one , part or whole of the display is replaced by video - images . these may be replayed from a recording medium , reconstructed by computer animation , or even be a live reproduction by a camera , such as one being directed on the user person &# 39 ; s head . according to an other extension , a smart card is used for taking over actual scores , for returning old scores , and for storing levels of skill attained , preferred settings , and others . the settings may refer to various aspects , such as sound level , exposure level of a camera being integrated in the system , and others . according to a third extension , the game may be based on networking with other games and / or players . this may lead to various levels of interaction , such as : competitive playing at remote sites , where even one player may try to influence another &# 39 ; s game , through the motion detector ; a jackpot hit at one game may give other players &# 34 ; the jitters &# 34 ;. various other features lay open to the skilled art practitioner to extend the game according to the invention .
for use in multimedia or other environments , a virtual pinball / video arcade game displays one or more computer - generated runner elements , runner inject elements , and runner interactivity elements . it has a programmed computer for simulating movement of the runner elements . this is interfered with by mechanical interactions between said inject and interactivity elements , the simulated movement of the one or more runner elements , and user actions on a user interface . in particular , the computer is furthermore connected to the housing as part of the user interface . a feedback actuator is controlled by the computer for imparting low - frequency primary physical interactions to the housing as a reaction on selected ones of the simulated mechanical interactions .