Amazon Patent Grants

Multirotor aircraft with enhanced yaw control

Granted: September 19, 2017
Patent Number: 9764829
A configuration of a multirotor aircraft that will facilitate enhanced yaw control includes one or more adjustable members that will twist the frame of the multirotor aircraft, thereby adjusting the orientation of the motors and propellers and enhancing the yaw control of the multirotor aircraft. In some implementations, the adjustable member(s) are passive and twist in response to differential thrusts generated by the propellers. In other implementations, the adjustable members are…

Aerial vehicle configuration

Granted: September 19, 2017
Patent Number: 9764835
This disclosure describes a configuration of a multi-propeller aerial vehicle (MPAV). The components of the MPAV are designed for easy manufacture, assembly, configuration and replacement. Likewise, the configuration of the MPAV is designed for increased flight duration.

Unmanned aerial vehicle secure egress and ingress

Granted: September 19, 2017
Patent Number: 9764836
This disclosure provides egress and ingress for unmanned aerial vehicles (UAVs) from a fulfillment center (FC) to perform deliveries of products and return to the FC from such deliveries while providing minimal exposure of an interior of the FC. The UAV may be used to deliver the cargo from the FC to a destination, and then return to the FC to retrieve other cargo for another transport to another destination. In some embodiments, departing UAVs may be launched from the FC through a…

Characterization of a scene with structured light

Granted: September 19, 2017
Patent Number: 9766057
Objects and their placement within a particular scene may be characterized using structured light with no or minimal manual intervention or calibration to the scene. The structured light pattern may be rendered with visible light, yet imperceptible to users, by generating a set of opposing excursions in one or more image properties for durations which are shorter than the integration time of the human eye. A set of assumptions and ongoing testing of those assumptions against physical…

Archival data storage system

Granted: September 19, 2017
Patent Number: 9767098
A cost-effective, durable and scalable archival data storage system is provided herein that allow customers to store, retrieve and delete archival data objects, among other operations. For data storage, in an embodiment, the system stores data in a transient data store and provides a data object identifier may be used by subsequent requests. For data retrieval, in an embodiment, the system creates a job corresponding to the data retrieval and provides a job identifier associated with the…

Data storage inventory indexing

Granted: September 19, 2017
Patent Number: 9767129
Embodiments of the present disclosure are directed to, among other things, managing inventory indexing of one or more data storage devices. In some examples, a storage service may store an index associated with archived data. Additionally, the storage service may receive information associated with an operation performed on the archived data. The storage service may also partition the received information into subsets corresponding to an identifier. In some cases, the identifier may be…

Efficient query processing using histograms in a columnar database

Granted: September 19, 2017
Patent Number: 9767174
A probabilistic data structure is generated for efficient query processing using a histogram for unsorted data in a column of a columnar database. A bucket range size is determined for multiples buckets of a histogram of a column in a columnar database table. In at least some embodiments, the histogram may be a height-balanced histogram. A probabilistic data structure is generated to indicate for which particular buckets in the histogram there is a data value stored in the data block.…

Category predictions identifying a search frequency

Granted: September 19, 2017
Patent Number: 9767204
Techniques for providing category predictions may be provided. For example, a process may attempt to improve a user experience when the user provides a search query. The process can predict the category associated with the search query, even when the category is not a keyword in the search query. Once the category is determined, data may be provided for the particular category, including data that enables an adjustment of a user experience. For example, when the category is apparel, the…

Adaptive user interface for directories

Granted: September 19, 2017
Patent Number: 9767207
Systems and techniques are utilized to cluster data entries. The data entries may be part of a hierarchical organization or may be categorized based on a set of attributes (e.g., directory of contacts, catalog of multimedia files, digital books). A disclosed method comprises accessing one or more data entries and determining a number of groupings to identify. Individual ones of the data entries are assigned weights. Ranges for individual groupings are determined and the one or more data…

Recommendations for creation of content items

Granted: September 19, 2017
Patent Number: 9767208
A user may request guidance regarding a topic in which the user wishes to create a content item about. Based at least partly on one or more keywords that are representative of the topic, a user sentiment of consumers with respect to the topic may be determined. A recommendation that relates to the topic and that may be based on an inventory of items within an item category associated with the topic may be provided to the user.

Transaction tracking and incentives

Granted: September 19, 2017
Patent Number: 9767474
Techniques for providing friction-free transactions using geolocation and user identifiers are described herein. These techniques may ascertain a user's location based on a location of a mobile device. A transaction between the user and a merchant may be completed with zero or minimal input from the user based on the geolocation of the mobile device and the user identifiers. In some implementations, a transaction initiated earlier is completed when the mobile device arrives at the…

Voice-assisted scanning

Granted: September 19, 2017
Patent Number: 9767501
In some cases, a handheld device that includes a microphone and a scanner may be used for voice-assisted scanning. For example, a user may provide a voice input via the microphone and may activate the scanner to scan an item identifier (e.g., a barcode). The handheld device may communicate voice data and item identifier information to a remote system for voice-assisted scanning. The remote system may perform automatic speech recognition (ASR) operations on the voice data and may perform…

Item recommendations in an electronic marketplace

Granted: September 19, 2017
Patent Number: 9767505
Techniques are disclosed to provide an item recommendation service in an electronic marketplace. Recommendations may be provided to a user of an electronic marketplace to offer an item via the electronic marketplace based on identifying requests for items from other users. In at least one embodiment, the request for an item from the other users may be identified as an item other than a plurality of items offered by the electronic marketplace or by the user. One or more sellers who offer…

Ground effect based surface sensing in automated aerial vehicles

Granted: September 19, 2017
Patent Number: 9767701
This disclosure describes a system and method for operating an automated aerial vehicle wherein influences of a ground effect may be utilized for sensing the ground or other surfaces. In various implementations, an operating parameter of the automated aerial vehicle may be monitored to determine when a ground effect is influencing the parameter, which correspondingly indicates a proximity to a surface (e.g., the ground). In various implementations, the ground effect based sensing…

Acoustic echo cancellation using visual cues

Granted: September 19, 2017
Patent Number: 9767828
Techniques for enhancing an acoustic echo canceller based on visual cues are described herein. The techniques include changing adaptation of a filter of the acoustic echo canceller, calibrating the filter, or reducing background noise from an audio signal processed by the acoustic echo canceller. The changing, calibrating, and reducing are responsive to visual cues that describe acoustic characteristics of a location of a device that includes the acoustic echo canceller. Such visual cues…

Near field coupler array

Granted: September 19, 2017
Patent Number: 9768496
An antenna to communicate at a defined frequency; a feed point; and a near-field coupler array coupled to the feed point is described. The near-field coupler array may include a substrate; a ground plane on a first side of the substrate; and a near-field coupler array disposed on a second side of the substrate. The ground plane may include a first aperture and a second aperture. The near-field coupler array can include a first coupler element aligned with the first aperture and a second…

Audio source and audio sensor testing

Granted: September 19, 2017
Patent Number: 9769582
An example method includes controlling an audio source to generate a test tone, controlling a plurality of audio sensors to sense the test tone simultaneously, receiving an output signal from each audio sensor, and determining an acoustic characteristic of each audio sensor based at least in part on the received output signals. The method also includes determining a difference between the acoustic characteristic and a corresponding reference value, identifying at least one audio sensor…

Wake-up quotas and statistics generation

Granted: September 19, 2017
Patent Number: 9769756
A processing device assigns a wake-up quota to an application, the wake-up quota comprising a time period. The processing device determines whether the application has met or exceeded the wake-up quota in the time period. Responsive to determining that the application has met or exceeded the wake-up quota in the time period, the processing device limits at least one of future alarm wake-ups, future network wake-ups or wake locks for the application.

System for simultaneous wireless communication

Granted: September 19, 2017
Patent Number: 9769767
Interference on a first wireless radio caused by operation of a second wireless radio in the same device may be reduced by reducing the transmission power of the second wireless radio. Signal strength data associated with the first wireless radio and isolation values associated with antennae used by the second wireless radio may be used to determine a target change in transmission power of the second wireless radio that would eliminate interference with the first wireless radio. Signal…

Modular data center without active cooling

Granted: September 19, 2017
Patent Number: 9769957
A modular computing system for a data center includes one or more data center modules including rack computer systems. An electrical module is coupled to the data center modules and provides electrical power to computer systems in the data center modules. The data center modules do not include any internal active cooling systems and cannot be coupled with any external active cooling systems. A data center module directs ambient air to flow into intake air plenums extending along intake…