Cross-cut: `earbud`

Axis: form_factor

10 corpus entries disclose this tag.

Earliest disclosure: 1953-10-19

Listed in chronological order. Each entry’s prior_art_notes and disclosure_citation constitute the citeable prior art material.

Fahrenheit 451 ‘Seashell’ ear radios (1953-10-19)

id: fahrenheit-451-seashell-radio
corpus: fictional
form factor: earbud
creator: Ray Bradbury
disclosure: Bradbury, Ray. Fahrenheit 451. Ballantine Books, 1953 — the ‘Seashell’ ear-thimble radios worn in the ear delivering a continuous stream of broadcast audio.
ip status: fictional
prior art notes: Earliest broadly-disseminated depiction of a small, in-ear, wireless audio device worn habitually for continuous audio streaming — the ‘wireless earbud’ concept. Discloses the in-ear form-factor element and the ‘continuous wireless audio reception’ element of modern hearable claims. § 103 motivation that a habitually-worn in-ear wireless audio device was an articulated objective by 1953. Non-enabling on the transceiver/transducer; pair with enabling miniature-receiver art.

Star Trek (TOS) bridge communications earpiece (1966-09-08)

id: star-trek-tos-uhura-earpiece
corpus: fictional
form factor: earbud
creator: Gene Roddenberry / Desilu Productions
disclosure: Star Trek (The Original Series), premiered September 8, 1966; the in-ear wireless receiver worn at the communications station to monitor incoming transmissions.
ip status: fictional
prior art notes: Discloses a single-ear wireless audio receiver worn during operation to monitor a communication channel hands-free — a working depiction of the in-ear wireless comms earpiece. § 103 motivation that the single-ear wireless monitoring earpiece was an articulated objective by 1966.

Aoyagi (1974) — two-wavelength pulse oximetry principle (1974)

id: aoyagi-1974-two-wavelength-pulse-oximetry
corpus: private
form factor: other
creator: Takuo Aoyagi (Nihon Kohden)
disclosure: Aoyagi T, et al. — the pulsatile two-wavelength (red/infrared) ratio method for non-invasive arterial oxygen saturation, presented at the 13th Annual Meeting of the Japan Society of Medical Electronics and Biological Engineering (1974); commercialized as the Nihon Kohden ‘Ear Oximeter OLV-5100’ (1975) and Minolta ‘Oximet MET-1471’ (1977). History documented in Severinghaus JW, Honda Y. ‘History of blood gas analysis. VII. Pulse oximetry.’ J Clin Monit 1987;3(2):135-138.
ip status: patented
sensors: sensor-spo2, sensor-ppg, sensor-multi-wavelength-ppg
algorithms: algo-spo2-estimation
prior art notes: Discloses the pulsatile two-wavelength ratiometric method that underlies every non-invasive SpO2 device: comparing the AC/DC ratios of light absorbance at (typically) red ~660 nm and infrared ~940 nm through pulsatile tissue to compute arterial oxygen saturation. Any wearable claim reciting ‘a first and second light source at distinct wavelengths and a photodetector configured to compute oxygen saturation from a ratio of pulsatile components’ reads on this. § 102 prior art for the SpO2 principle from 1974; the wrist/ring/earbud form-factor variants are obvious combinations under [[obviousness-template]].

The Hitchhiker’s Guide to the Galaxy ‘Babel fish’ (1978-03-08)

id: hitchhikers-babel-fish
corpus: fictional
form factor: earbud
creator: Douglas Adams
disclosure: Adams, Douglas. The Hitchhiker’s Guide to the Galaxy (BBC Radio 4 series), first episode broadcast March 8, 1978 (novelisation 1979) — a small organism placed in the ear that performs real-time, two-way translation of any spoken language for the wearer.
ip status: fictional
prior art notes: Discloses an in-ear device that performs continuous, real-time, two-way speech translation between languages, delivering the translated audio directly into the ear canal — i.e. the ‘real-time translation earbud’. Relevant to hearable claims combining ‘an in-ear housing’, ‘a microphone capturing speech in a source language’, ‘a translation engine’, and ‘a speaker rendering the target language’. § 103 motivation that the in-ear real-time translation device was an articulated objective by 1978 (well prior to commercial translate-earbud patents). Non-enabling on the translation engine; pair with enabling machine-translation art.

Looney et al. (2012) — ‘The in-the-ear recording concept’ (ear-EEG) (2012-11)

id: looney-mandic-2012-in-ear-eeg
corpus: academic
form factor: earbud
creator: David Looney / Preben Kidmose / Danilo P. Mandic et al.
disclosure: Looney D, Kidmose P, Park C, Ungstrup M, Rank ML, Rosenkranz K, Mandic DP. ‘The in-the-ear recording concept: user-centered and wearable brain monitoring.’ IEEE Pulse 2012;3(6):32-42. (See also Kidmose P, et al. ‘A study of evoked potentials from ear-EEG.’ IEEE Trans Biomed Eng 2013;60(10):2824-2830.)
ip status: public-domain
sensors: sensor-dry-eeg-electrode, sensor-eeg
algorithms: algo-drowsiness-detection, algo-sleep-staging, algo-bci-ssvep, algo-erp-classification
prior art notes: Discloses recording EEG from electrodes placed inside the ear canal / concha of an individually-fitted earpiece — i.e. EEG in an earbud / hearing-aid form factor, demonstrated to capture alpha modulation, auditory steady-state and evoked responses. Any wearable claim reciting ‘EEG electrodes disposed on an in-ear earpiece to measure an electroencephalographic signal of the wearer’ reads on Looney et al. 2012. Anchor for the earbud/hearing-aid × EEG cross-cut; complementary to [[debener-2015-ceegrid-around-ear-eeg]] and [[zanetti-aminifar-atienza-eglass-2025]] (around-ear / temporal pickup).

Her — ‘Samantha’ in-ear conversational AI (2013-10-12)

id: her-samantha-earpiece
corpus: fictional
form factor: earbud
creator: Spike Jonze / Annapurna Pictures
disclosure: Her (Annapurna Pictures / Warner Bros.), 2013; the in-ear earpiece through which the wearer continuously converses with an adaptive AI assistant (‘Samantha’) that infers the wearer’s emotional state from voice and context.
ip status: fictional
sensors: sensor-microphone-air
algorithms: algo-emotion-recognition
prior art notes: Discloses an habitually-worn in-ear device that is the user’s continuous interface to a conversational AI assistant, including the assistant inferring the user’s emotional/affective state from voice prosody and conversational context. Relevant to hearable claims combining ‘an in-ear device’, ‘a microphone’, ‘a wireless link to a conversational agent’, and ‘affect estimation from captured speech’. § 103 motivation that the always-worn AI-assistant earbud with affect sensing was an articulated objective by 2013.

Bragi Dash (2014) — the first true ‘hearable’: in-ear PPG heart rate, accelerometer, storage and touch control inside wireless earbuds (2014-02-25)

id: bragi-dash-2014
corpus: private
form factor: earbud
creator: Bragi GmbH
disclosure: Bragi GmbH. ‘The Dash’ wireless smart earphones, crowdfunded February 2014 (shipped 2016) — fully wireless in-ear earbuds with a reflectance-PPG heart-rate sensor and oxygen-saturation estimation against the ear-canal wall, a 3-axis accelerometer (head-gesture and step/activity tracking), 4 GB onboard music storage, bone-conduction microphone, and capacitive touch control.
ip status: patented
sensors: sensor-ppg, sensor-spo2, sensor-accelerometer, sensor-microphone-bone
algorithms: algo-hr, algo-spo2-estimation, algo-step-count, algo-activity-classification
prior art notes: Discloses fully-wireless in-ear earbuds with a reflectance-PPG heart-rate and SpO2 sensor against the ear-canal wall, an accelerometer for head-gesture and step/activity tracking, onboard music storage, a bone-conduction microphone, and capacitive touch control — i.e. physiological sensing integrated into wireless earbuds. Anticipates hearable claims combining ‘a wireless earbud housing’, ‘an in-ear PPG/SpO2 sensor’, ‘an accelerometer for activity or head gesture’, and ‘on-device media and controls’ from 2014. Product-side anchor for the earbud × PPG cross-cut.

Debener et al. (2015) — cEEGrid: unobtrusive around-the-ear EEG with flexible printed electrodes (2015-11-17)

id: debener-2015-ceegrid-around-ear-eeg
corpus: academic
form factor: patch
creator: Stefan Debener / Martin G. Bleichner et al. (Oldenburg)
disclosure: Debener S, Emkes R, De Vos M, Bleichner MG. ‘Unobtrusive ambulatory EEG using a smartphone and flexible printed electrodes around the ear.’ Scientific Reports 2015;5:16743.
ip status: public-domain
sensors: sensor-dry-eeg-electrode, sensor-eeg
algorithms: algo-erp-classification, algo-sleep-staging, algo-drowsiness-detection
prior art notes: Discloses a flexible, printed, C-shaped electrode array worn around the ear (behind and below the auricle) for unobtrusive ambulatory EEG, recorded to a smartphone-class device. Any wearable claim reciting ‘an array of EEG electrodes arranged around/behind the ear of the wearer’ (the geometry used by EEG glasses, EEG earbuds, and EEG behind-the-ear stickers) reads on Debener et al. 2015. Directly relevant prior art for [[zanetti-aminifar-atienza-eglass-2025]] (which uses temporal/around-ear pickup) and for around-ear-EEG hearable claims; anchor for that cross-cut.

Horizon Zero Dawn — the ‘Focus’ (compact ear/temple-worn AR scanner with object analysis and log playback) (2017-02-28)

id: horizon-zero-dawn-focus
corpus: fictional
form factor: earbud
creator: Guerrilla Games / Sony Interactive Entertainment
disclosure: Horizon Zero Dawn (Guerrilla Games / Sony, released 28 February 2017); the ‘Focus’ — a small triangular device worn at the temple/ear that provides AR overlays, scans and analyses machines and people in view (highlighting structure, components, and weak points), records and replays holographic/audio ‘datapoint’ logs, and networks with infrastructure.
ip status: fictional
sensors: sensor-camera-rgb
prior art notes: Discloses a compact ear/temple-worn device providing AR overlays, real-time scanning and structural analysis of objects/persons in view, recording and playback of geolocated holographic/audio logs, and networked operation — all in a minimal form factor. Relevant to compact-AR-wearable claims combining ‘an ear- or temple-worn device’, ‘an outward sensor’, ‘on-view object/person analysis with overlay’, and ‘recorded-log capture and playback’. § 103 motivation as of 2017. Cf. [[dragon-ball-z-scouter]], [[metal-gear-solid-sneaking-suit-and-solid-eye]], [[her-samantha-earpiece]].

Apple AirPods Pro 2 Hearing Health (2024) — earbuds as a clinical hearing test, OTC hearing aid, and hearing protection (2024-09-09)

id: apple-airpods-pro-2-hearing-health-2024
corpus: private
form factor: earbud
creator: Apple Inc.
disclosure: Apple Inc. ‘AirPods Pro 2’ Hearing Health features, announced 9 September 2024 (FDA-authorized hearing-aid software, October 2024) — the earbuds perform an audiogram-style hearing test, then function as a software over-the-counter hearing aid (frequency-specific amplification tuned to the test result, with real-time conversation enhancement), plus passive/active hearing protection that attenuates loud environmental sound.
ip status: patented
sensors: sensor-microphone-air
prior art notes: Discloses consumer earbuds that (a) administer an audiogram-style pure-tone hearing test to the wearer, (b) operate as a software over-the-counter hearing aid applying the resulting frequency-specific gain (with conversation/speech enhancement and directional processing), and (c) provide loud-sound hearing protection. Anticipates earbud/hearing-aid claims combining ‘a self-administered hearing assessment by the worn device’, ‘configuration of the device’s amplification from that assessment’, and ‘protective attenuation of loud environmental sound’ from 2024. Product-side anchor for the earbud-as-hearing-aid cross-cut; cf. [[bionic-woman-bionic-ear]] (the fictional antecedent of steerable/frequency-selective augmented hearing).

Cross-cut: earbud