Digital Commons Network^™

Security By Obfuscating Data Across Non-Adjacent Memory Locations, Aaron Vaage

Defensive Publications Series

The bytes that make up a data primitive (e.g., float, integer, etc.) are stored in adjacent bytes and in known order, based on a computer's architecture. Storing data in adjacent bytes is required by the hardware in order to operate on them. Compilers, in an effort to improve cache efficiency, pack primitives together. This packing indirectly communicates the relationship between primitives. When reverse engineering code, an attacker can observe the state of data on the stack. Knowing how the data is structured makes this much easier. The most reliable structuring is knowing how primitives will be structured. This disclosure describes …

Multimedia Slides With Attached Video Clips And Transcript From Presentation Video, Safwan Samla

Defensive Publications Series

Presentation slides by themselves include neither the spoken delivery of the presenter nor the interactive discussion with the audience during and after the presentation. As a result, the content of the slides can sometimes miss important information conveyed during the presentation. Those who simply read slide content without access to the accompanying live presentation may not develop a complete understanding of the material. This disclosure describes techniques to create multimedia slides augmented by corresponding video clips and/or audio transcript from the presentation.

Reducing Power Consumption In System-On-A-Chip Devices, Dmitry Shmidt

Defensive Publications Series

Disclosed herein is an improved mechanism for reducing power consumption in System-on-a-Chip (SoC) devices. The mechanism can include causing user-space applications executing on a main portion of a processor of a device to be suspended while causing a voice recognition application to continue executing in a Trusted Execution Environment (TEE) space of the processor. The voice recognition application can detect a spoken command included in audio data received by a microphone of the device. In response to detecting the spoken command, the device can cause one or more user-space applications executing on the main portion of the processor to be …

High-Strength Aluminum Alloys And Methods Of Making The Same, Xavier Varone, David Leyvraz, Cyrille Bezencon, Aurele Mariaux

Defensive Publications Series

Disclosed herein are high-strength aluminum alloys, methods of making and processing such alloys, and products prepared from such alloys. More particularly, disclosed are novel aluminum alloys exhibiting improved mechanical strength comprising zinc in combination with copper and/or silicon.

Topic Granularity Detection Based On Historical Distribution, Anonymous

Defensive Publications Series

User generated hashtags are widely used on social media platforms, blogs, and community sites to annotate content and make it easily discoverable by humans and algorithms. Hashtags reflect the semantics of the content from the users’ points of view, in their own vocabulary. Detecting the relationship between hashtags is often a challenging problem. This disclosure describes techniques that leverage the historical distribution of topics in social media posts or other content to accurately detect candidates for higher level topics in a topical graph. A generalization score is calculated based on the observation that higher level topics typically have a long …

Seamless Model Flighting For On-Device Machine Learning Models, Anonymous

Defensive Publications Series

On-device machine learning models play a key role in applications such as virtual assistants, document scanners, photo editors, facial recognition applications etc. on modern smartphones and other devices by eliminating the dependency on network connectivity and delivering a consistent and satisfactory user experience. However, the embedded model architecture makes the task of flighting a new machine learning model challenging. In model flighting, a small portion of the user base is exposed to the new version of the model, while the rest of the user base continues to use the old version of the model that is already part of the …

System And Method For Detecting Infinite Signaling Loop In Hierarchical Nrf Deployments, Ravi Shekhar, Ameo Ghosh, Shantanu Bhate

Defensive Publications Series

For larger deployments, where multiple level of Network Function (NF) Repository Functions (NRFs) are deployed, the slightest misconfiguration could lead to an indefinite query loop between NRFs. The indefinite loop in the NRF query would mean repeated timeouts and/or failure of a service discovery request that a consumer had initiated to find a suitable producer. This could lead to signaling failure between a set of consumers and producers, which in turn can lead to Quality of Service (QoS) and Service Level Agreement (SLA) violations. A new Hypertext Transfer Protocol Version 2 (HTTP/2) header, Network Function (NF)-route-record, is proposed, which should …

Light-Guiding Structure For Under-Display Sensor Modules, Sangmoo Choi, Chang Ju (Frank) Kang, Yi Zhang

Defensive Publications Series

This publication describes techniques and apparatuses for the use of a light-guiding structure to route electromagnetic signals emitted by an under-display sensor module to a bezel area of a mobile device for transmission and, likewise, route electromagnetic signals received in a bezel area to an under-display sensor module. In aspects, the light-guiding structure is a light guide plate, a curved light-guiding body, or optical fibers. The techniques and apparatuses provide increased efficiency of under-display sensor modules by avoiding signal loss caused by eliminating the need to transmit and receive electrical signals through the display panel structure of a display panel …

Deflection Estimation Using Birefringence, Anonymous

Defensive Publications Series

This disclosure describes techniques for deflection estimation for a protective cover in a wearable device such as an augmented reality (AR) headset. Per techniques of this disclosure, the birefringent property of a coverglass under stress is utilized to estimate coverglass deformation/deflection. The coverglass includes two polarization layers, applied to the outer and inner sides of the coverglass, that act as orthogonal polarizers. An image sensor is placed adjacent to the inner surface of the coverglass, and is optionally attached to the coverglass using an adhesive with a refractive index matched to that of the coverglass material. Polarized light emerging from …

Discovery And Presentation Of Community Membership At A Physical Event, Anonymous

Defensive Publications Series

In many contexts, an individual is part of a large group gathered together and may not know that there are others present that she knows. This disclosure describes techniques that, with user permission, automatically identify others present at an event that the user has something in common with. With user permission, attendees at an event are identified and their attributes are retrieved from online profiles. Subsets of attributes are identified that correspond to small groups and users that members of the subset are notified of the presence of others in the subset. A user interface is provided that uses color, …

Head Mounted Displays That Detect User Presence Using Sound Pattern Recognition, Anonymous

Defensive Publications Series

Determining if a head mounted display (HMD) is being worn by a user is important in determining whether to turn on or to turn off the device; to enable certain features that are available when the HMD is in use; to disable features that consume too much power when turned on during periods of non-use; etc. This disclosure describes sound pattern recognition techniques to determine the presence or absence of the user’s head inside the HMD. Per the techniques, sound patterns are generated by speakers and received by microphones within the HMD. The difference in received sound patterns between the …

Multiband Speaker Protection And Dynamic Excursion Control Of Audio Devices, Anonymous

Defensive Publications Series

If the excursion limit of the diaphragm of a speaker is exceeded, the speaker exhibits nonlinear behavior which manifests as distorted sound and degraded acoustic echo cancelation (AEC) performance. Moreover, if a speaker is driven too hard, the resulting excessive heat can damage the voice-coil and speaker. While the aforementioned problems are present in speakers of all sizes, these become more acute for smaller, portable speakers, e.g., as used in smartphones, smart speakers, micro-speaker, wearable devices, etc.

This disclosure describes techniques to simultaneously protect the speaker and achieve an optimum, multi-band audio experience by modeling the speaker, dynamically adjusting the …

Manufacture Of Acoustic Transducer With Improved Radiation Efficiency, Anonymous

Defensive Publications Series

This disclosure describes the design and manufacture of an acoustic transducer with superior radiation efficiency. In contrast to traditional acoustic transducers, the diaphragm and the speaker frame are bonded along a vertical surface, and the flange of the diaphragm is removed using laser cutting. The manufacturing procedure includes applying ultraviolet adhesive to the vertical side of frame; assembling the diaphragm into the fixture; combining the frame and the diaphragm together with fixture; curing the adhesive with ultraviolet light; removing the fixture; and laser-cutting the flange shape of diaphragm.

Audio Glasses With Variable Resistance Speaker Mesh, Anonymous

Defensive Publications Series

Audio glasses have built-in speakers along their side arms and earpieces. The distance between the speakers and the ear canal depends on the user’s head size which can vary across individuals. It is therefore difficult to deliver a consistent audio performance across people with varying head sizes. This disclosure describes techniques that adapt the total sound energy incident upon the ear canal so that a consistent audio performance is delivered regardless of head size. The techniques work by varying the number of active sound ports, by incorporating a speaker mesh of variable sound resistivity, and by generating a uniform sound …

Audio/Video Quality Measurement, Anonymous

Defensive Publications Series

Referential measurement tools that are used to measure video quality are typically very sensitive to synchronization and scaling issues that occur when video captured at a recipient device is out of synchronization with a source video and/or is scaled, e.g., to a different aspect ratio. When the captured video has such differences from the source video, conventional referential measurement techniques produce erroneous results. This disclosure describes techniques to process captured video to account for scaling effects and to synchronize captured video with source video. Referential measurement can then be performed with greater accuracy. A synchronization measurement technique is also described.

Personal Hand Safety Monitoring System, Anonymous

Defensive Publications Series

Techniques for monitoring user hand health and safety, estimating risks associated with user hand activity, and generation of suitable user alerts based on the estimated risk are described. With user permission, wearable devices such as AR headsets are utilized to determine a state of health of a user’s hands based on user activities and the user’s interactions with their environment. Actions such as hand washing, disinfecting, cleansing, etc. are identified. Machine learning models are utilized to identify the user practices based on observed user behavior. Protective hand wear use is identified, and surfaces, objects, and/or people touched by a user …

Automatically Deploying Connected And Centrally-Managed Retail Demo Devices, Steven Dawson, Chris Letnick, Joshua Levasseur, Monica De Armond, Aron Halil

Defensive Publications Series

Manufacturers of electronic devices have thousands of demonstration (demo) devices deployed in retail environments across the world. Deploying connected retail demo devices across third-party retailers is expensive, time-consuming, unscalable, and subject to human error. This disclosure describes mechanisms for automatically deploying connected and centrally-managed demo devices at retail locations. Wireless network credentials are pre-registered with a device manufacturer and included in a configuration file that is imaged onto a demo device. Upon power on, the demo device automatically searches for and connects to a retailer Wi-Fi network. The device sends heartbeats to a centralized dashboard to enable geolocating and monitoring. …

Smart Watch Power Saving Prediction Based On Contextual Signals, Brett Lider, Bjorn Kilburn

Defensive Publications Series

A wearable computing device (e.g., a smart watch), referred herein as a “wearable device” or “device,” is described that utilizes contextual signals to predict when to toggle between a power savings mode (e.g., “Sleep Mode”), where one or more lower power processors control functionality of the device, and a higher power mode, where one or more higher power processors control functionality of the device. The wearable device may predict, based on contextual signals, when the user may not require full functionality of the wearable device and switches to the power savings mode. For example, the user may not require full …

Adapting Delivery Of Virtual Assistant Responses That Include Private Information, Victor Carbune, Matthew Sharifi

Defensive Publications Series

Some queries to a virtual assistant may seek information specific to that particular user. In some of these instances, the query and/or the response may contain information that the user considers to be private. In such cases, if a virtual assistant delivers the response in the form of audio, such delivery can potentially reveal the user’s private information to others who might be in the vicinity, close enough to hear the spoken response from the virtual assistant. This disclosure describes techniques that automatically adjust response delivery by a virtual assistant whenever a user’s voice query and/or the information in response …

Working State Prediction Based On Markov Chain For Optimizing Network Performance In Llns, Lele Zhang, Akram Sheriff, Chuanwei Li, Li Zhao, Yajun Xia

Defensive Publications Series

The proposed technique attempts to recognize and predict the working state of a reachable destination node using a Markov Chain method in Low-Power and Lossy Networks (LLNs).

Unidirectional Broadcast Wifi For High Data Rate Transmission To Multiple Receivers, Erdi Chen, Daniel J. Yetso, Maxim John Coppin, Daniel Pradilla

Defensive Publications Series

This disclosure describes techniques for cache servers in a content delivery network (CDN) to egress data-intensive content such as videos, multimedia, application packages, etc. to clients by leveraging the broadcast mode of WiFi, which is an open-source modification to standard WiFi that enables transmission of unidirectional, broadcast traffic. The techniques enable the simultaneous transmission of very large amounts of data, e.g., a terabyte or more, in a relatively short time, e.g., one hour, to multiple clients using low-cost, off-the-shelf hardware. In an example application, the described broadcast WiFi techniques can be utilized to update content on public transport vehicles, e.g., …

3d Printed Midsoles With Sport Functionality, Hp Inc

Defensive Publications Series

This document suggests a novel method to manufacture midsoles with included functionality for certain

sports such as cycling. The proposal is to leverage the potential of 3D and optimize mechanisms used to fix

the shoe to different objects (canoe, bike, etc.) and reduce post-assembly processes, simplify supply chains

and improve performance of the biking shoes, among others.

Dispensing Powder From A Cartridge In A Single Supply Station To Multiple Intermediate Tanks, Hp Inc

Defensive Publications Series

One powder supply station is used to fill plural intermediate powder tanks of

an additive manufacturing printer by diverting powder to the proper tank based on the

material type of the cartridge installed in the supply station.

Simplified Low Cost Multiphase Ac Power Solution For 3d Printers, Hp Inc

Defensive Publications Series

Installation of an electronic product having multiphase AC power capability is

simplified by eliminating the need for the electrician to install jumpers at a 6-wire

terminal block, thus reducing or eliminating the risk of damage from miswiring the

product to the AC Mains.

Wall Design Of Transfer Box Lateral For Natural Cooling Kit, Hp Inc

Defensive Publications Series

Profiles, such as ribs, fabricated on walls of a printed transfer box ensure

dimensional accuracy of fabricated parts in the box when the box is placed in a natural

cooling kit.

Transforming Color Space With Arbitrary Matrix, Pascal Massimino, Maryla Isuka Waclawa Ustarroz-Calonge

Defensive Publications Series

In image compression, and encoder can transform representations of pixels and/or samples or color samples, such as by performing principal component analysis (PCA) on the pixels to generate a transformation matrix, compress the transformed pixels and/or encode the samples, and transmit the compressed pixels to a decoder. The decoder can decompress the pixels and/or decode the samples received from the encoder, and transform the pixels. The decoder can transform the pixels with an inverse matrix of the transformation matrix or any arbitrary matrix. The pixels can represent a color space either before or after transformation.

Validation Of Media Item Accuracy During Content Delivery, Anonymous

Defensive Publications Series

This disclosure describes techniques for validating media item accuracy before a media item is provided for rendering on a user device. A unique key or hash value is generated for each media item such as an image, video clip, etc. at a time of content creation. Upon receipt of a request for rendering content on a user device, hash values are determined for the media item(s) included in the content. The determined hash values are compared to corresponding hash values of the media items previously generated and stored. If it is determined that the determined hash values match the corresponding …

Providing A Resend Feature For Failed Transmission Of A Scanned Image, Hp Inc

Defensive Publications Series

MFP supports to send scanned documents to server or external PC after scanning (Scan to SMB,

Scan to FTP). And product supports multiple protocol simultaneously each scanning time. So, user

can send to multiple destination using multiple protocol at once. But If sending to one of multiple

destination is failed then user have to re-start scanning and re-select failed destination manually.

To solve this inconvenience, this idea provides Fast Re-send Email.

The Proposal Way Of Scan To Xxx File Name Automatically, Hp Inc

Defensive Publications Series

When the MFP makes files via scanner (Email, SMB, FTP, USB, Storage, etc.), the MFP

distinguish below 4 types of documents. Specific procedure of each types is

following a Sample.

(1) Passport

(2) ID Card

(3) Image

(4) Document

(5) Unknown

Type C Docking Built In Security Storage, Hp Inc

Defensive Publications Series

Recently, with all the lightweight and extremely thin ultra-book design, the storage is

becoming one of challenge as a trade-off for user to have high volume storage. The

objective here is to deliver a high-volume external storage built into type C docking and

also protected with specific security mechanism.

- User is able to operate their laptop on their office desk with high volume external

storage and specific secure access

- User is also able to enjoy the light weight and thin chassis when they travel with

the laptop