US 2,004,152,957 · Filed 2003-10-09
The Wearable That Counts Calories Your Body Burns, Not Just Eats
Imagine a device you wear that watches your body's movements and vital signs, then does math in the background to figure out how many calories you're burning — even though no sensor directly measures that. It's like having a personal fitness calculator on your wrist that knows both what you ate and how hard you worked.
The plain-English version
What it protects
The claim covers a wearable sensor system that collects raw physiological data (like movement and heart rate) and then uses a built-in processor to calculate derived metrics — like calories burned — that can't be measured directly by the sensors themselves. It also protects the ability to classify meals eaten using identifiers tied to their caloric content, creating a two-way tracking system for both energy in and energy out.
Why it matters
This patent captures the core idea of modern fitness trackers: turning raw sensor noise into actionable health insights. By protecting the method of deriving caloric expenditure from indirect measurements, it locks down a fundamental approach that became central to wearable fitness technology. The dual tracking of intake and expenditure was innovative enough to warrant patent protection during the early 2000s fitness-tech boom.
Real-world use
Every time you glance at your fitness watch and see how many calories you burned today, that calculation is powered by logic similar to what this patent describes — your device watched your movement all day and reverse-engineered your energy expenditure.
Original USPTO abstract
A monitoring apparatus that includes a sensor device and an I/O device in communication with the sensor device that generates derived data using the data from the sensor device. The derived data cannot be directly detected by the associated sensors. Alternatively, an apparatus that includes a wearable sensor device and an I/O device in communication with the sensor device that includes means for displaying information and a dial for entering information. Alternatively, an apparatus for tracking caloric consumption and caloric expenditure data that includes a sensor device and an I/O device in communication with the sensor device. The sensor device includes a processor programmed to generate data relating to caloric expenditure from sensor data. Alternatively, an apparatus for tracking caloric information for an individual that utilizes a plurality of classification identifiers for classifying meals consumed by the individual, each of the classification identifiers having a corresponding caloric amount.
Patent details
- Publication number
- US 2,004,152,957
- Filing date
- 2003-10-09
- Grant date
- Application — not yet granted
- Assignee
- John Stivoric / Christopher Pacione / Eric Teller / David Andre / Christopher Kasabach / Scott Boehmke / Suresh Vishnubhatla / Scott Safier / Jonathan Farringdon / Raymond Pelletier
- Inventor(s)
- STIVORIC JOHN, PACIONE CHRISTOPHER, TELLER ERIC, ANDRE DAVID, KASABACH CHRISTOPHER, BOEHMKE SCOTT, VISHNUBHATLA SURESH, SAFIER SCOTT, FARRINGDON JONATHAN, PELLETIER RAYMOND
- CPC class
- A61B5/00
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