US4948371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for training and evaluation of security personnel in use of firearms
Assignee: United States Department of Energy
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Filing: 1989-04-25
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Granted: 1990-08-14
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Expires: 2009-04-25
Abstract
Abstract An interactive video display system comprising a laser disc player with a remote large-screen projector to view life-size video scenarios and a control computer. A video disc has at least one basic scenario and one or more branches of the basic scenario with one or more subbranches from any one or more of the branches and further subbranches, if desired, to any level of programming desired. The control computer is programmed for interactive control of the branching, and control of other effects that enhance the scenario, in response to detection of when the trainee has (1) drawn an infrared laser handgun from his holster, (2) fired his laser handgun, (3) taken cover, (4) advanced or retreated from the adversary on the screen, and (5) when the adversary has fired his gun at the trainee.
Inventors
- 👤 Howard F. Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:23
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/003; F; F41; F41G; F41G3/00; F41G3/26; F41G3/2616; F41G3/2622; F41G3/2627
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
198 words
An interactive video projection system for realistic training and evaluation of security personnel armed with a portable infrared laser handgun to be used under prescribed security procedures in life-threatening and security scenarios comprising a laser disc player for reading out recorded video programs of training scenarios and alternate scenarios to which the process of reading out for display may conditionally branch and subbranch to any level of programming desired based upon action of the trainee, including the handling of said laser handgun, a large-screen projector for life-size display of video scenarios being read out of said laser disc player, a control computer programmed for interactive control of branching and subbranching in the readout of said recorded video programs and other effect that enhance the scenario based upon said action of the trainee in handling said laser handgun, including means for detecting when said handgun has been drawn from a holster, means for detecting when said handgun has been fired at an adversary in said scenario, means for detecting whether the trainee has advanced or retreated from said screen, and means for detecting whether the trainee has taken cover whenever an adversary in said scenario fires at the trainee.
Claim 2
Dependent Claim
198 words
An interactive video projection system for realistic training and evaluation of security personnel armed with a portable infrared laser handgun to be used under prescribed security procedures in life-threatening and security scenarios comprising a laser disc player for reading out recorded video programs of training scenarios and alternate scenarios to which the process of reading out for display may conditionally branch and subbranch to any level of programming desired based upon action of the trainee, including the handling of said laser handgun, a large-screen projector for life-size display of video scenarios being read out of said laser disc player, a control computer programmed for interactive control of branching and subbranching in the readout of said recorded video programs and other effect that enhance the scenario based upon said action of the trainee in handling said laser handgun, including means for detecting when said handgun has been drawn from a holster, means for detecting when said handgun has been fired at an adversary in said scenario, means for detecting whether the trainee has advanced or retreated from said screen, and means for detecting whether the trainee has taken cover whenever an adversary in said scenario fires at the trainee.
Claim 3
Dependent Claim
53 words
An interactive video projection system as defined in claim 1 wherein said means for detecting when said handgun has been fired at an adversary in said scenario is comprised of an infrared television camera focused on said screen for detecting an infrared dot on said screen produced by firing said infrared laser handgun.
Claim 4
Dependent Claim
191 words
An interactive video projection system as defined in claim 2 including means for computing the X and Y coordinates of said dot detected on said screen based upon vertical and horizontal sync pulses of said infrared video camera and a source of clock pulses by counting horizontal sync pulses which define camera scan rasters to computer the Y coordinate of said dot on said screen as viewed by said infrared camera during each interval between vertical sync pulses which define a frame, and counting clock pulses to compute the X coordinate of said dot on said screen as viewed by said infrared camera during each interval between horizontal sync pulses, means for discriminating a laser dot signal in a video signal from said infrared detector and in response thereto for initiating a latch signal to cause the contents of said X and Y counting means to be latched in latching registers and a laser gun shot interrupt signal to said control computer to cause said computer to read out the contents of said latching registers, and means responsive to said computer reading out said latching registers for clearing said interrupt signal.
Claim 5
Dependent Claim
46 words
An interactive video projection system as defined in claim 3 including means for storing a shot sound, and means responsive to said laser gun shot interrupt signal for reading out said shot sound for enhancement of said scenario based upon the trainee firing said laser handgun.
Claim 6
Dependent Claim
97 words
An interactive video projection system as defined in claim 4 wherein an adversary in said large screen display shoots back at said trainee, including means for generating a shoot back signal, means for energizing an infrared emitter to produce an infrared flash from a position over said screen in a direction away from said screen, infrared detectors mounted on a vest worn by said trainee to detect said infrared flash, and means for transmitting vest data to said control computer that said trainee has been hit upon an infrared detector on said vest detecting an infrared flash.
Claim 7
Dependent Claim
64 words
An interactive video projection system as defined in claim 5 wherein said means for transmitting vest data includes means for initiating a vest interrupt signal upon said vest detecting an infrared flash to said control computer, means for latching said vest data, and means for reading the contents of said vest data latch into said control computer in response to instructions from said computer.
Claim 8
Dependent Claim
76 words
An interactive video projection system as defined in claim 6 wherein said means for detecting whether the trainee has taken cover includes at least one treadle behind an object positioned to provide cover to produce treadle data when said trainee has taken cover by stepping on said treadle, and wherein said one treadle data is included in said vest data to produce a vest interrupt signal when it changes state between stepping on and stepping off.
Claim 9
Dependent Claim
78 words
An interactive video projection system as defined in claim 7 wherein said means for detecting whether the trainee has advanced or retreated from said screen includes a second treadle beside said object to produce treadle data when said trainee advances toward or retreats from said screen by stepping on or stepping off of said second treadle, and wherein said second treadle data is included in said vest data when it changes state between stepping on and stepping off.
Claim 10
Dependent Claim
42 words
An interactive video projection system as defined in claim 8 wherein said means for detecting when said handgun has been drawn from holster by said trainee is comprised of a microswitch and wherein said microswitch data is included in said vest data.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-13 | 1994-02-12 | 1994-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-13 | 1998-02-12 | 1998-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-13 | 2002-02-12 | 2002-08-14 | $7700.00 | Window Closed / Lapsed |