US 5,184,295 · Granted 1993-02-02
The 1993 Patent That Invented Virtual Coaching
Imagine a ghost version of the world's best athlete overlaid on top of you while you're trying to learn their sport. This patent describes a system that films you attempting a skill, then superimposes a computer-generated model of an elite performer — with your exact body dimensions — so you can see in real-time what you're doing wrong and what perfect looks like.
The plain-English version
What it protects
What's protected here is a method and system for capturing a student's movement via video, generating a computer model of an elite performer scaled to match the student's body dimensions, and then overlaying that model on the student's live video feed so both images appear together. The claim covers the coordination between the recorded student movement and the generated model display, as well as the processing steps needed to composite them into a single visual output.
Why it matters
This patent pioneered the concept of augmented-reality coaching before augmented reality was even a mainstream term. By combining biomechanics capture with real-time visual feedback, it opened a path for athletic training to move beyond static instruction or one-on-one coaching. The core idea—learning by seeing yourself against a perfect model—became foundational to later sports tech and fitness applications, though the patent itself predates most modern implementations by decades.
Real-world use
A tennis player uses this system to film themselves serving, then watches their motion overlaid with a virtual Serena Williams serving in the same space, revealing exactly where their form diverges from elite technique.
Original USPTO abstract
A system and method for teaching a student physical skills includes a processing module for producing and display a model of the student. The processing module includes a computing module for generating the model. The model has the exact physical dimensions of the student and superiorly performs the skill. A video imaging module captures the movement of the student attempting to perform the skill and generates a video signal for effecting input the processing module. The processing module coordinates the movement of the model with movements of the student and generates a pixel image representation of the model overlayed on the student. The model is generated from a plurality of elite performers capable of superior performance. The model is enhance with superior characteristics of performing the skill, but constrained to human capabilities.
Patent details
- Publication number
- US 5,184,295
- Filing date
- 1989-10-16
- Grant date
- 1993-02-02
- Assignee
- Mann Ralph V
- Inventor(s)
- MANN; RALPH V.
- CPC class
- A63B24/0003
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