All items tagged with patents (74)

Novosound Secures Patent For Wireless Wearable Ultrasound Imaging Platform

March 26, 2024 by Joao Martins

Novosound Secures Patent For Wireless Wearable Ultrasound Imaging Platform

Scottish sensor technology Novosound has secured a patent for its ultrasonic instrumentation system, with the company recently launching its related Slanj platform targeted at the medical and wearable device sectors worldwide. The new ultrasound imaging patent underpins Novosound's first-mover advantage to initiate efforts in consumer health, including blood pressure monitoring for smartwatches.

MindMics Granted Patent for Cardiovascular Monitoring via Infrasound Technology in Earbuds

January 30, 2024 by Joao Martins

MindMics Granted Patent for Cardiovascular Monitoring via Infrasound Technology in Earbuds

MindMics, a health technology startup from Cambridge, MA, announced the issuance of its latest patent, US11844618B2, titled "System and Method for Cardiovascular Monitoring and Reporting." This patent marks a significant leap in the field of cardiovascular health, offering a novel, non-invasive approach to disease monitoring and management using standard true wireless earbuds.

Patent Review: Air Motion Transformer Passive Radiator for Loudspeaker

January 10, 2024 by James Croft

Patent Review: Air Motion Transformer Passive Radiator for Loudspeaker

In the August 2018 issue of Voice Coil, James Croft combined the review of two important independent patents, having in common the fact that they try to address the shortcomings of the work of Dr. Oskar Heil with his Air Motion Transformer (AMT) woofer system. Following a review of a Tymphany patent, Croft reviewed a related patent for an Air Motion Transformer Passive Radiator, invented by and awarded to Eugene Julius Christensen (Aspen, CO).

Patent Review: Self-Bias Emitter Circuit

November 1, 2023 by James Croft

Patent Review: Self-Bias Emitter Circuit

This article reviews an intriguing new patent awarded to Turtle Beach Corp. addressing a new emitter circuit for providing a bias voltage, which is key for the development of electrostatic loudspeakers. Extremely aware of the techniques and historical perspective of the development in this area, Croft provides a complete overview of all the challenges, implications and merits of this patent and prior art. This article was originally published in Voice Coil, July 2018.

Voice Coil Patent Review: Two Key Resonado Patents

October 19, 2023 by James Croft

Voice Coil Patent Review: Two Key Resonado Patents

James Croft looks at two patents from Resonado Labs, the young speaker company that has been pursuing a new speaker topology — originally called Flat Core Speaker (FCS), and now rebranded as Res-Core — using a reconfigured speaker with a planar voice coil mounted perpendicularly to its flat diaphragm. This review covers two of the company's patents granted in 2022, titled "Speaker Comprising Split Gap Plate Structure," and "Flat Speaker Driven by a Single Permanent Magnet and One or More Voice Coils.".

Voice Coil Patent Review: Bidirectional Speaker Using Bar Magnets

October 12, 2023 by James Croft

Voice Coil Patent Review: Bidirectional Speaker Using Bar Magnets

In this article James Croft reviews a patent claimed by Leeg Hyun Cho (Gyeonggi-do, Korea), Youngil Cho (Chicago, IL), and Christian Femrite (Westminster, CO) on behalf of Resonado. The patent in question will be familiar to many Voice Coil and audioXpress readers who have followed the news about this young company's developments. As an experienced patent reviewer and speaker technology expert, Croft adds valuable context to the awarded patent. This article was originally published in Voice Coil, July 2021

The Latest in Loudspeaker Knowledge and Developments in Voice Coil October 2023

September 29, 2023 by audioXpress Staff

The Latest in Loudspeaker Knowledge and Developments in Voice Coil October 2023

In the October 2023 issue of Voice Coil, James Croft reviews an active noise control enclosure system, and Mike Klasco and Nora Wong provide an updated directory of Integrated Electronics for Loudspeakers. Vance Dickason offers three different driver characterizations, starting with the AMT100H driver from Eighteen Sound. Next up, he tests an updated version of the popular TW030WA23/24 tweeter from Wavecor. And finally, measures the Scan-Speak D2008/2010, the revised version of the classic dome tweeter from the Danish brand.

Lenbrook Acquires MQA, Patents, and Audio Codecs

September 19, 2023 by Joao Martins

Lenbrook Acquires MQA, Patents, and Audio Codecs

Lenbrook Corp., the privately-owned Canadian audio company that owns NAD Electronics, PSB Speakers, Bluesound, Bluesound Professional, and BluOS, has acquired the assets of UK-based company MQA. The deal adds significant audio patents and codecs to Lenbrook’s IP portfolio, including MQA's high-resolution audio encoding and the latest SCL6 Scalable Codec for wireless audio applications, which is implemented in the upcoming line of PSB headphones and earbuds.

Patent Review: Two Pioneer Patents. Same Speaker Invention

July 20, 2023 by James Croft

Patent Review: Two Pioneer Patents. Same Speaker Invention

This article reviews two patents titled simply "Speaker Device" from four Japanese inventors, on behalf of Pioneer Corp. of Japan. The original and expanded patent describes a flat speaker device capable of emitting loud reproduced sound, using a mechanical structure that converts a linear voice coil motion in one axis to an orthogonal mechanical diaphragm displacement. The system functions much like a scissor-jack you would use to raise your automobile to change a tire. The linear motion of the threaded rod coverts the axial force to a 90° lift movement.

Electrostatic Loudspeakers and Two Cutting-Edge High-End Tweeters in Voice Coil June 2023

May 31, 2023 by audioXpress Staff

Electrostatic Loudspeakers and Two Cutting-Edge High-End Tweeters in Voice Coil June 2023

Voice Coil June 2023 features an extensive patent review in James Croft's Acoustic Patents column. The topic is a 2014 patent awarded to Nokia, offering an opportunity to revisit the history of electrostatic loudspeakers, with insights from Tim Mellow, one of the two listed inventors. In Test Bench, Vance Dickason focuses on the D8404-552000 Ellipticor cloth diaphragm dome midrange from Scan-Speak, and characterizes the SB Acoustics TW29BNWG beryllium dome and waveguide from the brand's prestigious Satori line.

«
1
2
3
4
5
6
7
8
»