Royalty Report: Telecommunications Svcs & Equip, Telecommunications Equip, Mobile – Collection: 280955

$150.00

Curated Royalty Rate Report
Category: Technology Licenses, Created On: 2022-04-28, Record Count: 11

Description

This collection of transactions and supporting information was developed using our AI algorithm to curate similar royalty reports into a cohesive collection to support your licensing, transfer pricing or other transaction scenarios where documented royalty rates and/or deal terms are important.
Category: Technology Licenses
Created On: 2022-04-28
Record Count: 11

Primary Industries

  • Telecommunications Svcs & Equip
  • Telecommunications Equip
  • Mobile
  • Cellular
  • Wireless
  • Circuits
  • Integrated Circuits
  • Scientific & Technical Instruments
  • GPS
  • Electrical & Electronics
  • Consumer Electronics
  • Medical

IPSCIO Report Record List

Below you will find the records curated into this collection.  This summary includes the complete licensed property description so that you can review and determine if this collection covers the topics, technology or transaction type that is relevant for your needs.  The full report will include all relevant deal data such as the royalty base, agreement date, term description, royalty rates and other deal terms.  For reference, here is a sample of a full IPSCIO curated royalty rate report: Sample Report

IPSCIO Record ID: 280955

License Grant
Licensor hereby sells, assigns and transfers to Licensee all right, title and interest in and to the Invention, including but not limited to all patent, patentable and all related rights therein and to the deliverables described.  The parties agree that the rights sold, transferred and assigned hereunder include all patents, trade secrets and other proprietary rights associated with the Invention as specifically described, incorporated herein by this reference.  Licensor agrees to cooperate with Licensee or its designee(s), both during and after the tram of this Agreement, in the procurement and maintenance of Licensees rights to the Invention, the Documentation and the Enhancements and to execute, when requested, any other documents deemed necessary by Licensee to carry out the purpose of this Agreement.
License Property
Invention means as described
Deliverables
A. The Invention Dual Echo Canceller with Multiple Adaptation Methods.
The Invention is a multiple channel echo cancellation system comprising
l. Means to access the standard telephone carrier interfaces, including T-1, E-1, DS3, OC3 and similar standard interfaces.
2. Primary cancellation means consisting of a tapped delay line wherein portions of the tapped delay line generate an estimated echo which is subtracted from the actual echo, hence producing estimated an echo free or nearly echo free signal.
3. Several echo cancellation estimation and adaptation mechanisms, which, in response to unsatisfactory performance by the primary echo cancellation means, estimate and adapt a new solution.
4. Secondary cancellation means consisting of another tapped delay line, wherein the results of several echo cancellation estimation and adaptation mechanisms may be evaluated, by comparing cancellation performance to the primary echo cancellation means·.
B. C5x Embodiment
Source code and design information for embodiment in Texas Instruments TMS320C5x DSP processors.
C. C54x Embodiment
Source code and design information for embodiment in Texas Instruments TMS320C54x DSP processors.
D.Training
Training as necessary to permit Ditechs utilization of the Invention. Training obligation shall terminate upon the earlier to occur of five hundred (500) man hours, or two (2) years from the Effective Date, or upon termination of the Agreement.

Source Code means the human-readable source code version of any implemented embodiment of the Invention that can be compiled into Executable Code, together with all applicable build scripts, test scripts and programmers notes.

Field of Use
Echo cancellation products use a software-intensive architecture coupled with one of the latest commercially available digital signal processors ('DSPs') to cancel echo and enhance the quality of voice communications.

IPSCIO Record ID: 203416

License Grant
Licensor grants a worldwide, perpetual, nontransferable license under the PowerStream IP
– to make, use, create, develop, sell, offer to sell, rent, lease, distribute, market, commercialize, export and/or import Products anywhere in or throughout the world;
– to have Products made, used, created, developed, sold, offered for sale, rented, leased, distributed, marketed, commercialized, exported and/or imported anywhere in or throughout the world, provided that Licensee may not have Products made, created or developed by a Competitor of Licensor without Licensors prior written consent; and
– to grant sublicenses, which may authorize further sublicensing through one or more layers of sublicensees, to third parties, provided that Licensee may not grant such sublicenses to a Competitor of Licensor without Licensors prior written consent.
License Property
Licensor is the owner of and is developing certain technologies for communications over various media, including powerlines and copper telephone wire, that are degraded by noise, signal attenuation and/or signal distortion

Powerstream Technology means Licensors high speed powerline technology, which includes a synchronizer, a digital equalizer, a modulator/demodulator, a forward error correction encoder/decoder, an error detection encoder/decoder, physical layer management, segmentation and reassembly, link protocol, quality of service, and applicable interfaces.

MWB Technology means that multiple wideband, high speed communications technology being jointly developed by Licensor and Licensee, a High-Data-Rate Long Distance Communications for Noisy and Attenuated Media such as VDSL, rev. 1.00, and which will be further developed jointly by Licensor and Licensee pursuant to this Agreement.

Products means products that are designed for use only in the Field implementing the PowerStream Technology and/or MWB Technology and that, but for the provisions of this Agreement, would infringe the PowerStream IP and/or MWB IP.

The patents are for Power Line Communication System, Method and Apparatus for Data Encoding and Communication Over Noisy Media, Reconfigurable On-Demand Telephone and Data Line System, Wideband Communication System Using Delay Line Clock Multiplier, Token Passing Arrangement For Power Line Communication System, Digital Equalization Process and Mechanism, and, Error Correction Process and Mechanism.

Field of Use
The Field means transmission products for any portion of the telecommunications network comprised of copper telephone wire between and including the carriers facility and the termination of that wire at the access point at the user premises, including in-building copper telephone wire cable riser applications in multi-tenant units (MTUs) and multi-dwelling buildings (MDUs). Other in-building applications are not included in the Field.

IPSCIO Record ID: 332216

License Grant
Licensor grants to Licensee a personal, nontransferable worldwide and nonexclusive license under Licensors Intellectual Property
(a) to make and have made, import, use and sell, lease or otherwise dispose of Complete CDMA Telephones solely for Wireless Local Loop Applications,
(b) to make and have made, import, use and sell, lease or otherwise dispose of CDMA Modem Cards solely for Wireless Applications, and
(c) to make and have made Components provided such Components have been exclusively designed by Licensee and which design is owned and used exclusively by Licensee and import, use and sell, lease and otherwise dispose of Components but only if such Components are included as part of and within complete Subscriber Units Sold by Licensee.
License Property
Licensor has developed certain proprietary Code Division Multiple Access('CDMA') technology which may be useful in providing greater capacity and improved quality and reliability compared to other cellular telephone technologies.

CDMA Applications means all communication applications, regardless of the transmission medium, which operate using code division multiple access (CDMA) technology, whether or not based on IS-95, cdma2000 or W-CDMA, and irrespective of frequency band.

IS-95 Related Systems means IS-95 and any single carrier system with a spreading bandwidth not greater than 1.25 Mhz and based on or derived from IS-95.

Licensors Intellectual Property' means Licensors Technically Necessary IPR and Licensors Included Commercially Necessary IPR and InterDigitals Patents; provided that, notwithstanding the foregoing, the term Licensors Intellectual Property' shall not include any intellectual property, including but not limited to patents, owned by SnapTrack, Inc.

Field of Use
Licensee desires to obtain a license of Licensor's Intellectual Property to manufacture and sell Subscriber Units and to purchase certain components and equipment from time to time under regular purchase orders.

The field of use is digital spread spectrum communications as applied to the telecommunications industry.

IPSCIO Record ID: 215230

License Grant
The Licensor and Japanese Licensee, the parties, entered an existing Patent License Agreement covering certain time division multiple access or TDMA-based products manufactured and sold by Licensee.  A substantial dispute has arisen between the parties as to whether royalties are owed by Licensee for its sale in Japan of Covered Infrastructure Units and Covered Subscriber Units compliant with the PHS and PDC Covered Standards.

The parties have agreed upon a settlement of the dispute, wherein the settlement provides(i) for certain amendments to the Prior Agreement, the principal amendment providing for certain payments to ITC in lump sum amounts in exchange for a paid-up license for Covered Subscriber Units and Covered Infrastructure Units compliant with PHS and PDC Covered Standards, and (ii) for a new license agreement (this 3G Agreement) involving Covered Subscriber Units and Covered Infrastructure Units compliant with Narrowband CDMA and Third Generation

With this agreement, Licensor, for itself and its Affiliates, hereby grants to Licensee and its Affiliates a non-exclusive, non-transferable, worldwide license under the Licensed Patents to make, have made, use, import, sell and otherwise dispose of Covered Subscriber Units and Covered Infrastructure Units, including the right to make, have made, use, import, and otherwise dispose of components therefor, or the supply of replacement parts therefor.

License Property
'Licensed Patents' means any issued patent relating to TDMA or CDMA-based digital wireless communications and similar patent applications.

This agreement is for over 100 patents registered throughout the world.  The licensed patents mostly relate to the telecommunications and broadcasting industry.

'Combi-Unit' means any Subscriber Unit which has substantial functionality unrelated to basic voice or wireless data transmission, such as video phones, personal digital assistant, computers, and the like, but which performs modulation and demodulation.

'Communication Card' means a Subscriber Unit in card or similar format (e.g. PCMCIA card) which contains at a minimum all of the circuitry necessary for modulation and demodulation in accordance with one or more Covered Standards and may be readily attachable to, and detachable from, the body of an end-user terminal device, whether fixed, mobile, transportable, vehicular, portable or hand-held, with RF transmit and/or RF receive capabilities by end-user. A Communication Card shall include all attachments necessary to enable the information and/or communication unit to transmit and receive wireless communications.

'Infrastructure Unit' means mobile switching centers, radio network controllers, service nodes, Node B's, base stations, radio resource management devices and software, base station controllers, digital transceivers, digital channel cards, and software necessary to operate the aforementioned devices (including software maintenance agreements to the extent that free upgrades are provided in exchange for the maintenance fee, or to the extent that the software maintenance provides an upgrade or enhancement as to functionality), whether sold as individual items or bundled as an integrated product, which is used to interconnect a Covered Subscriber Unit to a public or private data or voice network (whether wired or unwired), including the internet. Subject to the foregoing, absent some substantial difference in design and/or function of Infrastructure Units, the parties agree, generally, the interpretation of Infrastructure Equipment and Net Selling Price (as defined in the Prior Agreement), and used in the arbitration, including for audit purposes, shall generally be considered acceptable guidelines in determining the royalty base hereunder.

'Narrowband CDMA' means standards for direct sequence code division multiple access digital cellular radiotelephone service adopted as a standard by either a standards development organization – such as ETSI, TIA/EIA or ARIB- or a major operator of public subscription systems for in-country requirements (e.g. frequency spectrum availability, interconnection with preexisting telephony networks, etc.) which limit the spread of the signal over a bandwidth not greater than 1.25 MHz, including, but not limited to, IS-95 Rev.A, IS-95 Rev. B and various derivations thereof that do not fundamentally alter the character thereof.

1,031,038 PORTABLE TONE DECODER-ENCODER SYSTEM
320,892 3,824,465 PORTABLE TONE DECODER-ENCODER SYSTEM
2,322,941 ADAPTIVE CANCELLATION OF FIXED INTERFERERS

Field of Use
The agreement relates to the digital, cellular, and wireless communications industry.

IPSCIO Record ID: 203640

License Grant
Licensor grants a worldwide, nonexclusive, nonassignable, irrevocable, right and license, without the right to grant sublicenses, under Licensors technical information to design, manufacture, have manufactured, use, lease, sell, or otherwise dispose of Licensed Products and Derivative Products.

Licensor grants a worldwide, nonexclusive, nonassignable, irrevocable right and license, without the right to grant sublicenses, under Licensors patents to design, manufacture, have manufactured, use, lease,  sell, or otherwise dispose of Licensed products.

Licensor grants a worldwide, nonexclusive, nonassignable, irrevocable, right and license, without the right to grant sublicenses, under Licensors applicable copyrights, to copy, use, sell and distribute to customers or potential customers copies of data sheet documentation transferred hereunder.

License Property
Licensor has proprietary technology and design expertise relating to Asymmetric Digital Subscriber Loop (ADSL) using Discrete Multitone (DMT) line code.

Licensed products shall mean ADSL integrated circuits.

The patents in intellectual property are for Bit Swap Protocol, Fast/Slow Concept, Clip Mitigation, Recovery from Microinterruptions, Time-domain Equalizer (TEQ), DMT Echo Canceller, Continuous Bandwidth Optimization, Front-end Circuitry, A Combined Oversampled/Filtered DAC and Tangs Interleaver.

Field of Use
The license is for the manufacture and selling of integrated circuits.

IPSCIO Record ID: 203442

License Grant
Licensor grants to the Korean Licensee and its Subsidiaries, a worldwide, nontransferable, non-exclusive license, without the right to sublicense, under the Licensors Intellectual Property, to the extent the Licensors Intellectual Property is required for utilization of Channel Estimation Module or CEM technology in the Licensees Products, and Future Developed Intellectual Property rights to make, have made, import, use, sell, lease or otherwise dispose of, the Licensees Products.
License Property
The Prototype System means the prototype of a Licensees adaptive antenna array enhanced Code Division Multiple Access BTS which consists of a AAA RF front end and Licensors channel estimation function integrated into the Licensees modified base transceiver station system (BTS).

Licensor shall provide labor, facilities, materials, and services required to design, document, build, and deliver the components as specified herein for an Adaptive Antenna Array BTS system, including
• RF Front End
• Channel Estimation Modules
• Beamformer Design Implementation
• Channel Estimation Software

Field of Use
The field of use is solely for mobile communications applications and to make, have made, import, use, sell, lease or otherwise dispose of Licensees Components.

The channel estimation function integrates into the Licensees modified base transceiver station system, and,  assist with the design incorporation of Beam forming capability into the Licensees Cell Site Modem ASIC.

IPSCIO Record ID: 332258

License Grant
This amendment updates the grant to read Licensor grants a personal, nontransferable, worldwide and nonexclusive license under Licensors Intellectual Property solely for Wireless Local Loop Applications
(a) to make, and have made, import, use and l ease or otherwise dispose of Subscriber Units, and
(b) to make, and have made, Components, provided such Components have been exclusively designed by Licensee and which design is owned and used exclusively by Licensee, and import, use and sell, lease and otherwise dispose of such Components but only if such Components are included as part of and within complete Subscriber Units Sold by Licensee or as replacement parts for Subscriber Units previously sold by Licensee.
License Property
Licensor has developed certain proprietary Code Division Multiple Access('CDMA') technology which may be useful in providing greater capacity and improved quality and reliability compared to other cellular telephone technologies.

With this amendment, Fixed Wireless Terminal means a complete CDMA fixed, non-mobile, non-portable telephone which 1) incorporates all or any part of Licensors Intellectual Property, 2) can be used, without any additional equipment or components being attached thereto, to initiate and receive Wireless Local Loop telecommunications in accordance with the CAI, and 3) is AC-powered through coupling of an attached power cord to an external fixed-location power supply.

Code-division multiple access (CDMA) is a channel access method used by various radio communication technologies. CDMA is an example of multiple access, where several transmitters can send information simultaneously over a single communication channel. This allows several users to share a band of frequencies (see bandwidth). To permit this without undue interference between the users, CDMA employs spread spectrum technology and a special coding scheme (where each transmitter is assigned a code).

CDMA2000 is a family of 3G[1] mobile technology standards for sending voice, data, and signaling data between mobile phones and cell sites.

Field of Use
Licensee desires to obtain a license of Licensor's Intellectual Property to manufacture and sell Subscriber Units and to purchase certain components and equipment from time to time under regular purchase orders.

The field of use is digital spread spectrum communications as applied to the telecommunications industry.

IPSCIO Record ID: 27929

License Grant
Licensor hereby grants to Licensee, one non-exclusive and non-transferable right and license, during the Term of this Agreement, to make, have made, use, offer to sell, sell and otherwise transfer the Product or Products and practice the invention covered by the claims of the Patents solely within the embodiment of the triggerable location and remote control products developed and manufactured by Licensee.  This license is granted for developing, using, manufacturing (including outsourced manufacturing), marketing distribution and sales (including extending its rights under this license to units it sells to its customers for actual use of the licensed products) of Units.  Notwithstanding anything to the contrary contained in this agreement, except for all previously granted licenses and the licenses granted to Licensee, Licensor shall not license the Systems to any other persons or entities except those against whom Licensor has alleged have infringed or may potentially infringe upon Licensor's intellectual property rights.
License Property
The System is a telematics system which combines the following components and electronic circuits (or their functional equivalents) together comprising (i) a location signal generating device such as a GPS system receiver, (ii) a telemetry communication module such as a cellular telephone or satellite transceiver for example, (iii) a central processor unit, (iv) a trigger sensor input/output interface module, (v) a location signal antenna, (vi) a communication signal antenna, and (vii) a power source (the Unit).

Identification of Patents.  Licensee agrees that all rights granted by Licensor to Licensee hereunder are conditioned upon Licensee permanently affixing to the packaging of each Unit incorporating and using the Product and permanently affixing to each Unit incorporating and using the Product a legible notice reading Licensed under Patents No. US- 6,297,768 B1, 6,476,763 B2, 6,484,035 B2, 7,710,738 B2,, substituting any future patent numbers, as applicable.

Licensor has invented, developed and patented certain inventions relating to Wireless Triggerable Location and Remote Control products and Licensor intends to continue to invent, develop, improve and patent second generation Location and Remote Control products related thereto which represent improvements or modifications to the existing inventions (collectively, the Product) which either are currently under the protection of certain Letter Patents described in detail and shown in this document (including any modifications, extensions, renewals, divisions, continuations and continuations-in-parts and all reissues thereof), or will be protected by further patents now pending and obtained by Licensor (collectively, the Patents).

Field of Use
The rights granted relates to location reporting apparatus and methods.  The patent specifications necessary for Licensee to integrate and create the functions of the Product into the Unit are defined in this agreement.  It is understood that Licensee is responsible for all engineering, designs and manufacturing required for Licensee to utilize the intellectual property embodied in the patents.

The technology utilizes the integrated use of telecommunications and informatics to enable users to remotely monitor, track, control and protect a wide variety of asset classes such as, automobiles, and other motorized vehicles, shipping containers, covert vehicles used for law enforcement, and even people. This technology is referred to as “Telematics.”

IPSCIO Record ID: 27483

License Grant
The Licensor  grants the Licensee exclusive right to produce or have produced products covered by U.S. Patent #4,768,849 a filter tap for use in optical fiber communication systems.
License Property
Applications involve Optical wavelengths greater than 1.1u.  The applications relate to thin-film coating of material for use in fiber-optic systems for information distribution to and from multiple users.  Licensee may produce or have produced products covered by the Patent for applications involving Optical wavelengths which are less than 1.1u but only for sale to licensee or a designated affiliate, unless licensee shall otherwise consent in writing.

IPSCIO Record ID: 282873

License Grant
Licensor grants to Licensee and its subsidiaries a non-exclusive, worldwide, non-transferable license, without the right to grant sub-licenses, under all Licensor Licensed Patents to make, have-made, use, offer to sell, sell, lease, import, export, and/or otherwise dispose of Licensee Licensed Products.
License Property
Licensed Patents means Core GPS Patents listed assigned to Licensor or its Parent or subsidiaries, which were issued or pending on effective date, including Core GPS Patents (i) which Licensor or its Parent or subsidiaries own, acquire, or control as of the effective date, or (ii) under which Licensor has the right to grant licenses of the scope granted herein, without the payment of royalties or other consideration to a third party or parties, except for payments to employees of Licensor or its Parent or Subsidiaries for inventions made by said employees while employed by Licensor or its Parent or Subsidiaries and also except for any other payments for which Licensee agrees to reimburse Licensor. For the purpose of clarification, the phrase “the payment of royalties or other consideration” hereinabove shall never be construed to include any payment made by Licensor as consideration for the acquisition of the patents, utility models, design patents, applications, or licenses or rights thereunder.

US Patent #5,148,452 – Global positioning system digital receiver
US Patent #5,175,557 – Two channel global positioning system receiver

Licensor Licensed Products means the Licensor Star II and Licensor Star III product lines and future Licensed Products which are manufactured by or on behalf of Licensor or its Subsidiaries during the term of this Patent Cross License. For the avoidance of doubt, Licensor Licensed Products shall not include any products of an investor in Licensor or an acquiriing party of Licensor, manufactured by or on behalf of the investor or acquiring party.

Licensee Licensed Products means the u-N 8031, uN8130, uN3010 and uN3020 products and future Licensed Products which are manufactured by or on behalf of Licensee or its Subsidiaries during the term of this Patent Cross License. For the avoidance of doubt, Licensee Licensed Products shall not include any products of an investor in Licensee or an acquiring party of Licensee, manufactured by or on behalf of the investor or acquiring party.

Licensee Licensed Patents means Core GPS Patents listed, assigned to Licensee or its subsidiaries which were issued or pending on the effective date, including Core GPS Patents (i) which Licensee or subsidiaries own, acquire, or control as of the effective date, or (ii) under which Licensee has the right to grant licenses of the scope granted herein, without the payment of royalties or other consideration to a third party or parties, except for payments to employees of Licensee or its subsidiaries for inventions made by said employees while employed by Licensee or its subsidiaries and also except for any other payments for which Licensor agrees to reimburse Licensee. For the purpose of clarification, the phrase “the payment of royalties or other consideration” hereinabove shall never be construed to include any payment made by Licensee as consideration for the acquisition of the patents, utility models, design patents, applications, or licenses or rights thereunder.

US Patent #6,850,558 – Spread spectrum receiver
US Patent #6,909,739 – Signal acquisition system for spread spectrum receiver

Licensed Products means GPS Products. For the avoidance of doubt, Licensed Products shall not include IP Core Technology.

Core GPS Patents means the Patents of either party with claims to subject matter limited to the structures of or the methods implemented by the four corners of the GPS base band chip and/or RF chip; such as, for example, the following matched filters, correlates, I NAs, SAW filters, and multipath algorithms. The term  Core GPS Patents includes all Patents asserted in the Action, excluding U.S. Pat. No. 5,663,735, as the Action is defined in the Settlement Agreement and Mutual Release.

Patent(s) means all classes or types of patents, utility models, design patents, and applications therefore of all countries of the world, which are issued, published, or have a first effective filing date prior to the effective date including continuation(s), divisional(s), reissue application(s) and foreign counterpart(s) thereof. The term Patent(s) does not include copyrights, trademarks, mask work rights, or any know-how or trade secret rights.

Field of Use
The Licensee develops GPS ICs and software solutions for the mobile location-based services market.

IPSCIO Record ID: 2559

License Grant
Licensor hereby grants to Licensee a license to make, use, distribute, sell and/or have sold Licensed Products solely in the Market.
License Property
Licensed Patents shall mean all those patents relating to the reduction of noise and enhancement of speech by electronic means in headsets owned by Licensor together with those patents issued under patent applications filed relating to the reduction of noise and enhancement of speech by electronic means in headsets including any continuations, continuations-in-part, divisions, extensions, reissues, re-examinations or renewals of any of the foregoing.

Licensed Technology shall mean that unpatented technology relating to the reduction of noise and enhancement of speech by electronic means in headsets owned by or licensed to Licensor.

Headsets Generics That Apply

US 4,862,506 Issued August, 1989, entitled Monitoring, Testing and Operator Controlling of Active Noise and Vibration Cancellation Systems.  It describes a flexible user interface for maintenance and operation of the electronics for noise cancellation.  It is in use in the MRI headset product for testing and maintenance.  A monitoring capability may be provided integral with or separate from a vibration cancellation system to monitor or display input and output signals and transfer functions as well as spectral waveforms. Testing is performed by monitoring and displaying the input and generating appropriate test signals while further monitoring and displaying the input. The ability to modify the characteristics of the vibration cancellation system is included.

US 5,105,377 Issued April 14, 1992, entitled Digital Virtual Earth (DVE). A digital adaptive feedback control system. Instability is prevented by use of a fixed internal model of the physical system. This approach has been used noise canceling headsets industrial mufflers.

US 5,418,857 Issued May 23, 1995, entitled Active Control System for Noise Shaping. The use of an active control system to control the quality of a sound rather than just try to cancel it.  Has applications for sound quality control in automobiles.

US 5,440,642 Issued August 8, 1995, entitled Analog Noise Cancellation System Using Digital Optimization of Variable Parameters. A digital control system is used to adjust the response of an analog noise cancellation system and to control tonal components of the noise. Has application to active ear defenders.

US 5,481,615 Issued Jan 2, 1996, entitled Improved Audio Reproduction System. The use of a combination of active noise control and adaptive equalization to improve an audio system. This has particular use in headsets for hi-fi and for telecommunications.

US 5,652,799 Issued July 29, 1997, entitled Noise Reducing System.  A control system for selectively reducing tonal noise without the use of reference signal or tachometer signal. Has application to active headsets where speech or other signals must not be canceled.

US 4,654,871 Issued March 31, 1987, entitled Method and Apparatus for Reducing Repetitive Noise Entering the Ear. It provides for open-backed headsets wherein a repetitive noise signal detected by a microphone at the headset is nulled by the headphone diaphragm in an adaptive manner. A similar approach to provide a noise-free zone at a seat, is described.

US 4,701,952 Issued May 26, 1987, entitled Frequency Attenuation Compensated Pneumatic Headphone and Liquid Tube Audio System for Medical Use. Describes a system for delivering music into a passive headset for MRI patients. Reissued April 27, 1993 as Re. 34,236.
GB 2,172,769 Issued July 6, 1988, entitled Improvements in Acoustic Attenuation. An analog active headset utilizing feedforward control.

GB 2,160,070 Entitled Sound Reproduction System. An analog active headset with a communications input. The communication signal is equalized and mixed with the input and/or output of the feedback control loop. Used in current communications headsets.

GB 2,172,470 Issued January 11, 1989, entitled Improvements Relating to Noise Reduction Arrangements. An analog active headset in which a second microphone is used to adjust the feedback gain automatically so as to prevent instability.

EP 0,212,840 Issued October 23, 1991, entitled Noise Reduction Device.  An analog active headset in which the feedback gain is automatically adjusted. The adjustment may performed by a digital controller.

EP 0,232,096 Entitled Acoustic Transducer. A closed-back headset in which the ear cup is vented to improve low frequency performance.

EP 0,192,379 Entitled Improvements Relating to Noise Reduction Arrangements. A closed-back active headset that uses an additional loudspeaker connected to the headset by a tube. The tube acts as an acoustic low pass filter that prevents noise caused by any non-linear distortions of the loudspeaker from reaching the ear.

US 4,953,217 Issued August 28, 1990, entitled Noise Reduction System.  An analog active headset that includes a device to reduce the effect of low frequency sound buffeting.

US 5,452,361 Issued September 19, 1995, entitled Reduced VLF Overload Susceptibility Active Noise Cancellation Headset. In an analog feedback headset, an extra microphone is used to detect very low frequency (VLF) sound and subtract it from the feedback signal. This removes the VLF component without the need for extra high pass filtering – which would introduce delay and therefore reduce performance.8 US 5,313,945 Issued May 24, 1994, entitled Active Attenuation System for Medical Patients. Active ear defender for MRI patients in which the sound in the headset is monitored through hollow plastic tubes and anti-noise is supplied to the headset through hollow plastic tubes.

US 5,375,174 Issued December 20, 1993, entitled Remote Siren Headset.  An active headset for use in emergency vehicles in which the control system is separated from the headset and communicates remotely.  This allows the headset to be more portable, have longer battery life, and allows a single controller to control several headsets.

US 5,604,813 Issued February 18, 1997, entitled Industrial Headset.  A communications headset which provides active noise cancellation without interruption of normal communication. A bridge circuit is used to by-pass the ANC circuit as required, and the communications signal is boosted when the ANC system is in operation.

US 5,699,436 Issued December 16, 1997, entitled Hands Free Noise Canceling Headset. The use of the residual microphones in an active noise canceling headset system to pick up the speech of the wearer for use with communication systems.

US 5,815,582 Issued September 29, 1998, entitled Active Plus Selective Headset. The use of an open back headset and a feedforward noise cancellation system to provide comfort and enhanced communications for the user.

EP 0705472 Issued May 10, 2000, entitled Variable Gain Active Noise Cancellation System with Improved Residual Noise Sensing. In an active headset, the error microphone is displaced radially with respect to the loudspeaker so as to measure a sound more closely related to that at the ear. Additional features, such as side perforations, are used to obtain improved and more robust performance.

US 6,069,959 Issued May 30, 2000, entitled Active Headset. Active headset canceling external noise in both the higher and lower frequency ranges while reducing the subjective pressure felt within the ears by the user. A bridge amplifier circuit is used which is user adjustable without reducing the breadth of the given frequency range over which noise reduction is effective.

Patents Pending Under Filed Applications Patents Pending

(268)Headset Filed September 7, 1995. The use of a dome to cover the front of a loudspeaker in an active headset, thereby obtaining a more consistent acoustic response. This enables higher feedback gain to be used and results in improved cancellation performance.

(272)Noise Cancellation System for Active Headsets Filed August 18, 1997. An active headset capable of compatibility with existing socket configurations of an external device and capable of powering active noise cancellation circuitry whether or not resident in the active headset.

(617)Cushioned Earphones Filed March 18, 1998. Use of auxetic foam in headset ear cushions which more readily moulds around irregularities in the shape of the ear and so reduces air leaks.

(618)Headset for Aircraft Filed March 18, 1998. An active noise reduction
headset for use by aircraft passengers. Each earphone comprises at least two parts, one carried by the headband, the other part connecting both mechanically and electrically to the first part. Components requiring frequent replacement are carried by one part and the other part is available for re-use.

Disclosures for Which Patent Applications are to be Filed 621 A Non-Adaptive Variable Response Active Headset 661 An Active Noise Reduction Earbud
Patents

ClearSpeech Technology Generics That Apply

US 4,423,289 Issued December 27, 1983, entitled Signal Processing Systems. A means for providing an adaptive filter transfer function which can be adjusted to any desired complex form. The filter operates by splitting the signal into frequency bands and modifying the gain in each frequency band. This is the basic structure used in the Adaptive Speech Filter.
Application Specific

US 5,768,473 Issued June 16, 1998, entitled Adaptive Speech Filter. A filter for enhancing noisy speech signals. Provides improvements to a short term spectral amplitude filter to improve performance and simplify real-time implementation. US 6,091,813 Issued July 18, 2000, entitled Acoustic Echo Canceller. A method and apparatus for cancelling acoustic echoes that enhances the hands free operation of audio/video conferencing equipment, wireless and cellular telephones, internet and intranet telephones, etc. The method and apparatus include a novel method for updating the coefficients of an adaptive filter.

US 6,108,610 Issued August 22, 2000, entitled A Method and System for Updating Noise Estimates During Pauses In An Information Signal. A method and system for improving Adaptive Speech Filter estimates of the noise component of complex signals that contain both the information signal and noise. Noise estimates are generated and updated only during pauses in the information signal, thus increasing processing speed and decreasing system memory.

Field of Use
The rights granted apply in the MRI headset product for testing and maintenance.
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