Intersection cross-cut: armband ∩ sensor-accelerometer

Axes: form_factor × sensors

4 corpus entries disclose both tags.

Earliest disclosure: 2012-04-20

These entries are the direct inputs to OBVIOUSNESS_TEMPLATE.md. Any patent claim combining these two elements is anticipated or rendered obvious by the chain below.

Patel et al. (2012) — ‘A review of wearable sensors and systems with application in rehabilitation’ (2012-04-20)

  • id: patel-bonato-2012-wearable-sensors-rehab-review
  • corpus: academic
  • form factor: other
  • creator: Shyamal Patel / Hyung Park / Paolo Bonato et al.
  • disclosure: Patel S, Park H, Bonato P, Chan L, Rodgers M. ‘A review of wearable sensors and systems with application in rehabilitation.’ Journal of NeuroEngineering and Rehabilitation 2012;9:21.
  • ip status: public-domain
  • sensors: sensor-accelerometer, sensor-gyroscope, sensor-emg, sensor-ecg, sensor-ppg, sensor-pressure-skin
  • algorithms: algo-gait-analysis, algo-activity-classification, algo-fall-detection, algo-tremor-detection, algo-bradykinesia-detection, algo-posture-detection
  • prior art notes: Reviews, as of 2012, wearable inertial/EMG/pressure sensor systems for movement and physiological monitoring in rehabilitation and chronic-disease management — gait analysis, activity and posture classification, fall detection, tremor and bradykinesia quantification (Parkinson’s), with the sensor placements (foot/insole, shank, thigh, trunk, wrist, forearm) and algorithms. Prior art for wearable movement-disorder and gait-monitoring claims reciting any of the placements/analytics surveyed; collected and published by 2012. General anchor for the gait / tremor / activity cross-cuts.

Thalmic Labs Myo armband (2014) — consumer surface-EMG gesture-control armband (2013-02-25)

  • id: myo-armband-2014
  • corpus: private
  • form factor: armband
  • creator: Thalmic Labs Inc. (later North)
  • disclosure: Thalmic Labs Inc. ‘Myo gesture control armband’, announced February 2013, shipped 2014 — a forearm-worn band of eight medical-grade stainless-steel surface-EMG electrode segments plus a 9-axis IMU, recognizing hand and finger gestures from the forearm-muscle electrical activity and arm orientation/motion, and transmitting them over Bluetooth as input to computers/devices.
  • ip status: patented
  • sensors: sensor-emg, sensor-accelerometer, sensor-gyroscope, sensor-magnetometer
  • algorithms: algo-hand-gesture-emg, algo-keystroke-emg
  • prior art notes: Discloses a forearm-worn band with an array of eight surface-EMG electrodes plus a 9-axis IMU that recognizes hand/finger gestures from forearm-muscle EMG combined with arm motion/orientation and transmits them wirelessly as a control input. A consumer realization of the myoelectric pattern-recognition approach ([[englehart-hudgins-2003-myoelectric-control]]); anticipates EMG-gesture-armband claims combining ‘a band of surface-EMG electrodes worn around the forearm’, ‘an inertial sensor’, and ‘a classifier mapping the combined signal to a hand gesture / control command’ from 2014. Product-side anchor for the armband × EMG cross-cut (the only armband form-factor entry besides [[mass-effect-omni-tool]] and [[fallout-pip-boy]]).

WHOOP Strap (2015) — display-less wrist/bicep PPG band for continuous HR/HRV, sleep and recovery (2015)

  • id: whoop-strap-2015
  • corpus: private
  • form factor: bracelet
  • creator: WHOOP, Inc. (Will Ahmed)
  • disclosure: WHOOP, Inc. ‘WHOOP Strap’, launched 2015 — a screenless band worn on the wrist or upper arm with photoplethysmography, a 3-axis accelerometer, and skin-temperature sensing, providing continuous heart rate, heart-rate variability, respiratory rate, sleep staging, and a derived ‘recovery’ score, with no on-device display.
  • ip status: patented
  • sensors: sensor-ppg, sensor-accelerometer, sensor-skin-temperature
  • algorithms: algo-hr, algo-hrv, algo-respiratory-rate, algo-sleep-staging, algo-activity-classification
  • prior art notes: Discloses a display-less band worn on the wrist or upper arm with PPG, accelerometry, and skin-temperature sensing that continuously derives HR, HRV, respiratory rate, and sleep stages and combines them into a daily ‘recovery’ index, with no screen (companion-app readout). Anticipates screenless-band claims and PPG-derived-HRV/recovery-score claims from 2015. Product-side anchor for the bracelet × PPG cross-cut and the HRV cross-cut.

Tap Strap (Tap Systems, 2018) — finger-mounted gesture and keyboard input device (2018)

  • id: tap-systems-tap-strap-2018
  • corpus: private
  • form factor: other
  • creator: Tap Systems Inc. (founder: Dovid Schick)
  • disclosure: Tap Systems Inc. (founded 2014, Sherman Oaks, CA). ‘Tap Strap’ wearable input device, shipped 2018 — five finger-loops connected by a flexible band across the back of the hand, with accelerometers on each finger detecting tapping and gesture; mapped onto a virtual keyboard, mouse, and gesture commands via BLE. Successor ‘Tap Strap 2’ (2019) and ‘TapXR’ (a wrist version, 2023). https://www.tapwithus.com
  • ip status: patented
  • sensors: sensor-accelerometer
  • algorithms: algo-hand-gesture-emg
  • prior art notes: Discloses a hand-worn device of multiple finger-loops linked by a back-of-hand band, with motion sensors on each finger detecting per-finger tap and swipe events and mapping them via BLE to a virtual keyboard / mouse / gesture protocol — wearable per-finger gesture input by motion sensing alone (no EMG). Directly relevant prior art for any finger/hand gesture-input wearable, including [[ctrl-labs-meta-wrist-emg-2018]] (EMG route), [[myo-armband-2014]] (forearm-EMG route), and ring-form gesture input devices. Anticipates per-finger-motion-sensor gesture-recognition wearable claims from 2018.

Public domain (CC0 1.0). The corpus IS the prior art commons.

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