Microsoft Technology Licensing, LLC

Simon Skaria

Andrew Sean Watson

Kedarnath Atmaram Dubhashi

Naresh Kannan

Simon Clarke

Mitesh Patel

Jonathan Bailor

Jonathan D Schwartz

Miko Arnab Sakhya Singha Bose

Mark Rolland Knight

Christopher James Antos

Andrew Grey Carlson

Jason Todd Hunter

Sambavi Muthukrishnan

Don Adam Hedgpeth

Elena Petrova

Scott Fullam

Quentin Simon Charles Miller

Lev Cherkashin

Steven James Velat

Willard Bruce Jones

Miko Arnab Sakya Singha Bose

Scott Francis Fullam

Jason T Hunter

A mixed-reality system causes a magnetic transmission device to transmit a magnetic field signal. The mixed-reality system also causes a magnetic-field sensing device to determine a measurement of the magnetic field signal. The mixed-reality system then identifies, using one or more input devices, that a magnetically-interfering object is located within a same environment as both the magnetic transmission device and the magnetic-field sensing device. The mixed-reality system also determines one or more characteristics of magnetic field interference that the magnetically-interfering object is imparting on the magnetic transmission device or the magnetic-field sensing device. The mixed-reality system then computes an adjustment to a pose-estimation model based upon the one or more characteristics of magnetic field interference. The pose-estimation model is used to calculate a pose of at least one of the magnetic transmission device or the magnetic-field sensing device.

Magnetic interference detection and correction

A method to identify a child process to a parent process in an operating system includes obtaining a token and login identifier from the operating system. The parent process creates a remote procedure call communications endpoint to communicate with the child process. Thereafter, a child process is spawned by the parent process. A child-initiated request to communicate with the parent process is then received by the parent process. In order to verify the identity of the child-initiated request, the parent process impersonates the child process and receives as identifier that identifies the requestor child process. The requestor process identifier and the spawned child identifier are compared. Based on the comparison, the parent process responds to the child-initiated request. In another embodiment, process identifiers are used by the parent process to verify the identity of a child process the requests communication with the parent process.

Trusted communications with child processes

Example systems and methods are directed at maintaining and retrieving presence metadata. One example method includes receiving a request from a first client to edit a document file, and sending short-term check out metadata to the first client to begin an editing session. The method also includes writing the transition ID to a transition table stored in a cache, wherein the presence of another transition ID in the cache indicates that a document has switched from a single-client mode to a multi-client mode. An example system includes a processing unit operative to receive a document, the document including short-term check out metadata indicating an editing session has begun, ping a cache to determine if another transition ID is stored in the cache, and send a transition ID to a transition table stored in a cache to switch from a single-client mode to a multi-client mode.

Caching infrastructure

Distributed storage of collaboration data is managed over internal and external data stores in a collaboration service environment based on categorization of the data. The categorization may be based on type of data (e.g. structured vs. unstructured), how the data is accessed, an expected storage life for the data, back-up requirements, and the like. Data that can be stored externally according to its category is then directed to the external storage through a storage provider. A unique identifier associated with the location of the externally stored data is saved in one of the internal data stores for seamless retrieval of data in a transparent manner to the user.

Distributed storage for collaboration servers

Tools and techniques for indexing and querying data stores using concatenated terms are provided. These tools may receive input queries that include at least two query terms. The query terms are correlated respectively with fields contained within records within a data store, with these fields being populated with respective field values. The query terms are arranged according to an indexing priority according to which the fields are ranked within an indexing table, which is associated with the data store. The tools then concatenate the query terms as arranged according to the indexing priority. In turn, the tools search the index table for any entries that are responsive to the concatenated query terms.

Indexing and querying data stores using concatenated terms

Examples are related to systems and methods for controlling access to document files on a document server. One example system includes document files stored on a document server, at least one of the document files referencing a file lock, and a document access processing module. The example document access processing module includes a file sharing processing module that determines a coauthoring status of a software application of a client computer requesting access to the document file, and a file lock processing module that stores one or more file locks and that controls the setting and resetting of file locks. The example document access processing module uses the coauthoring status of the software application and the file lock status of a document file to determine whether a software application is permitted to have write access to the document file.

Controlling access to documents using file locks

A storage system according to one embodiment for managing a first file includes a blob storage and a handler. The blob storage may be configured to store data related to the first file temporarily. The handler may be configured to store in the blob storage any data related to the first file and received from an application. The handler also may be configured to transfer at least a portion of the data from the blob storage to persistent storage in response to a commit instruction received from an application or generated by the handler. The handler also may be configured to retrieve any portion of the data stored in the blob storage and to send the same to a requesting application in response to an access request.

Data storage for file updates

Various mechanisms are provided for the lockdown of an item store. For example, a method is provided that comprises of disabling access to a relational engine for a set of users associated with a filing system utilizing the relational engine to manipulate data in an item store. Following such disabling of access, an exception is created by allowing access to the relational engine for users of the filing system based on a set of privileges the users have been assigned. The disabling of access can be accomplished by removing system users from ownership roles, and the allowing of access can be accomplished by providing certificates to users that have associated set of privileges granted to the users.

Relational lockdown for an item store

A system that generates a per user abstraction of a store from a connection point. Filtering a view set of a hierarchically secured containment hierarchy based on the access permissions of the principal is one of the novel features of the invention. The invention can offer a collection of primitives that can operate on this aggregation that span multiple container hierarchies with potentially heterogeneous security descriptors. The model can reduce the necessity to traverse the container hierarchy to discover all the accessible items in a domain.

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Sammamish, WA, United States of America

Simon Skaria