Hewlett-packard Development Company, L.P.

Amazon Technologies, Inc.

Hewlett-packard Company

Gregory Edward Tierney

Simon C Steely, Jr

Stephen R Van Doren

Ashish Shah

Seth Kaufman

Robert Michael Shydo, Jr

Stephen Caldara

Fahrudin Alagic

Jianfeng Pu

Timothy G Dietz

Andrew Stubbs

Matthew David Verminski

Peter K Mansfield

Aayush Aggarwal

James Plumley

Matthew Anthony Brady

Anatoly Mitlin

Steven Augustine Wilson

Ryan Clarke

St Phen R Van Doren

Robert Michael Shydo

Techniques for providing a signal processing feature in an inventory management system are described herein. For example, instructions may be received by a computer system of an autonomous vehicle that identify a path to move inventory within a materials handling facility. Further, the computer system of the autonomous vehicle may reduce a current traveling speed of the autonomous vehicle in response to receiving a first signal that is provided by a transmitter coupled with an entity moving within the materials handling facility. The first signal may be span a first distance. In embodiments, the computer system of the autonomous vehicle may stop movement of the autonomous vehicle in response to receiving a second signal provided by the transmitter coupled with the entity. The second signal may span a second distance from the entity that is less than the first distance.

AGV traffic management system

Techniques for managing device interaction between components of an inventory management system are described herein. User input associated with an operational state of the user device may be received at the user device and the user device may begin operating in a particular operational state. While operating in this state, the user device may transmit a wireless signal having a predetermined frequency. A mobile drive unit of the system, upon receipt of the wireless signal, may slow or stop. Operational state information may be transmitted to other components of the inventory management system indicating that the wireless signal is being transmitted and/or that the user device is operating in a particular operational state and a fault detection process may commence. The user device may provide an indication (e.g., via visual, audible, and/or haptic feedback devices) that the user device is operating in the particular operational state.

Techniques for managing device interactions in a workspace

Techniques for controlling movement of a mobile drive unit within a workspace are described. In an example, a system may access a map of the workspace. The map defines a policy for the movement of the mobile drive unit within the workspace based on a volume of the workspace associated with a fire shutter. The fire shutter is located within the workspace and is operable to manage a spread of a fire within the workspace. The system may generate at least a portion of a movement path for the mobile drive unit within the workspace based on the map and on an event for transporting material from a location in the workspace. The portion of the movement path is in compliance with the policy defined in the map. The system provides at least the portion of the movement path to the mobile drive unit over a data network.

Managing operations of a mobile drive unit within a workspace based on a fire-based policy

Techniques for providing an entity monitoring safety feature in an inventory management system are described herein. For example, instructions may be received by a computer system of an autonomous vehicle that identify a path to move inventory within a materials handling facility. Further, the computer system of the autonomous vehicle may reduce a current traveling speed of the autonomous vehicle in response to receiving a first signal that is provided by a transmitter coupled with an entity moving with the materials handling facility. The first signal may be provided up to a first distance from the entity. In embodiments, the computer system of the autonomous vehicle may stop movement of the autonomous vehicle in response to receiving a second signal provided by the transmitter coupled with the entity. The second signal may be provided up to a second distance from the entity that is less than the first distance.

Electronic device

Short range transmissions are used to identify potential interactions between warehouse workers and warehouse robots in automated warehouses. The robot can be equipped with one or more short range transmission tags, such as radio frequency identification (RFID) tags, while the warehouse worker can be equipped with a short range transmission reader, such as an RFID reader. The robot can detect a warehouse worker that is within range when the RFID tags on the robot are written to by the RFID reader. The warehouse robots and warehouse workers can also be equipped with one or more cameras to identify fiducials in the automated warehouse and to report their positions. A central control or interaction server can ensure that warehouse robots and warehouse workers are routed appropriately to avoid incidents.

Systems and methods to facilitate human/robot interaction

A system comprises a first node operative to provide a source broadcast requesting data. The first node associates an F-state with a copy of the data in response to receiving the copy of the data from memory and receiving non-data responses from other nodes in the system. The non-data responses include an indication that at least a second node includes a shared copy of the data. The F-state enabling the first node to serve as an ordering point in the system capable of responding to requests from other nodes in the system with a shared copy of the data.

System and method for creating ordering points

A system comprises a first node including data having an associated state. The associated state of the data at the first node is a modified state. The system also comprises a second node operative to provide a non-migratory source broadcast request for the data. The first node is operative in response to the non-migratory source broadcast request to provide the data to the second node and to transition the associated state of the data at the first node from the modified state to an owner state without updating memory. The second node is operative to receive the data from the first node and assign a shared state to an associated state of the data at the second node.

System and method for non-migratory requests in a cache coherency protocol

Multi-processor systems and methods are disclosed. One embodiment may comprise a multi-processor system including a processor that executes program instructions across at least one memory barrier. A request engine may provide an updated data fill corresponding to an invalid cache line. The invalid cache line may be associated with at least one executed load instruction. A load compare component may compare the invalid cache line to the updated data fill to evaluate the consistency of the at least one executed load instruction.

Consistency evaluation of program execution across at least one memory barrier

Multi-processor systems and methods are disclosed that employ a pre-fetch buffer to provide data fills to a source processor in response to a request. A pre-fetch buffer retrieves data as a uncached data fill. The source processor processes the data in response to a source request.

Multi-processor system receiving input from a pre-fetch buffer

A system comprises a first node that employs a source broadcast protocol to initiate a transaction. The first node employs a forward progress protocol to resolve the transaction if the source broadcast protocol cannot provide a deterministic resolution of the transaction.

System and method for resolving transactions in a cache coherency protocol

A system comprises a first node having an associated cache including data having an associated first cache state. The first cache state is capable of identifying the first node as being an ordering point for serializing requests from other nodes for the data.

Cache coherency protocol with ordering points

Systems and methods are disclosed for updating owner predictor structures. In one embodiment, a multi-processor system includes an owner predictor control that provides an ownership update message corresponding to a block of data to at least one of a plurality of owner predictors in response to a change in an ownership state of the block of data. The update message comprises an address tag associated with the block of data and an identification associated with an owner node of the block of data.

System and method for updating owner predictors

One disclosed embodiment may comprise a system that includes a home node that provides a transaction reference to a requester in response to a request from the requester. The requester provides an acknowledgement message to the home node in response to the transaction reference, the transaction reference enabling the requester to determine an order of requests at the home node relative to the request from the requester.

Growing community of inventors

Chelmsford, MA, United States of America

Gregory Edward Tierney