Abstract: A method, apparatus and system for secure one-way RFID tag identification is provided. The method comprising generating, at an RFID tag, an auxiliary identifier; generating, at an RFID tag, a secure representation based on the auxiliary identifier; transmitting, from the RFID tag and receiving at an RFID reader, one or more representations of the auxiliary identifier and the tag identifier including the secure representation; and verifying the identity of the RFID tag based on the received representations.

Abstract: The present invention provides for a RFID tag assembly that is suitable for operation with at least one RFID reader assembly. The RFID tag assembly comprises, inter alia, an antenna member for transmitting and/or receiving an RFID signal, and at least one integrated circuit (1C) for processing the RFID signal and which is configured to communicate, alternatingly and sequentially in time, a first signal transmission and at least one second signal transmission, each defined by a plurality of predetermined signal transmission parameters, to the at least one RFI D reader assembly, utilising time-division multiplexing, wherein the at least one first signal transmission differs from the at least one second signal transmission in at least one of said plurality of predetermined signal transmission paameters.

Abstract: A method, apparatus and system for secure one-way RFID tag identifications provided. The method comprising generating, at an RFID tag, an auxiliary identifier; generating, at an RFID tag, a secure representation based on the auxiliary identifier; transmitting, from the RFID tag and receiving at an RFID reader, one or more representations of the auxiliary identifier and the tag identifier including the secure representation; and verifying the identity of the RFID tag based on the received representations.

Abstract: Object model data modification is described in which object model data defining a three dimensional model to be generated by a three-dimensional printer may be obtained. Data relating to a first sensitive portion of the model may be obtained, the first sensitive portion representing a portion of the model to be concealed. Modified object model data in generated, the modified object model data including a first version of the three dimensional model that is represented in a first pre-processing application without exposing the first sensitive portion, and including the first object model data defining the three dimensional model for printing by a three-dimensional printer.

Abstract: According to examples, a three-dimensional (3D) fabrication system may include fabrication components and a controller. The controller may control the fabrication components to fabricate parts of a 3D object in a build envelope, the parts to be assembled together to form the object, and in which the parts are fabricated at locations corresponding to relative positions of the parts with respect to each other in the assembled object. The controller may also control the fabrication components to fabricate a cage around the parts in the build envelope.

Abstract: Certain examples described herein relate to a removable unit for a three dimensional printing system. The removable unit comprises at least one compartment to store build material for a three-dimensional print job, a coupling to engage with a printer device of the three-dimensional printing system, and a memory. The memory is configured to store instructions for the three-dimensional print job for the printer device, and the instructions are readable from the memory by the printer device when the removable unit is engaged with the printer device.

Abstract: A controller-implemented method of controlling a three dimensional (3D) printing process, comprises presenting printing options (20) of the 3D printing process at a user interface (16); accepting settings (22) from the user interface (16) based on the presented printing options (20); determining a printing instruction (24) based on the settings (22), the printing instruction (24) to be used to manufacture a three-dimensional (3D) object; and determining a post-processing instruction (26) based on the settings (22), the post-processing instruction (26) to be used in post-processing the 3D object.

Abstract: An appliance includes an appliance body having a front panel defining a connector slot. A hinge receiver is coupled with the appliance body and has opposing side walls defining a receiving space therebetween. The hinge receiver includes a first striker positioned above a second striker. The first and second strikers are aligned with the connector slot. A hinge arm assembly includes a hinge arm configured to engage with the second striker and a latch cam hingedly coupled with the hinge arm. The latch cam is movable between an engaged position and a disengaged position, and a top surface of the latch cam abuts the first striker in the engaged position. A door is rotatably coupled with the appliance body by the hinge receiver and the hinge assembly and is rotatable about a door axis between open and closed positions.

Abstract: An appliance includes an appliance body having a front panel defining a connector slot. A hinge receiver is coupled with the appliance body and has opposing side walls defining a receiving space therebetween. The hinge receiver includes a first striker positioned above a second striker. The first and second strikers are aligned with the connector slot. A hinge arm assembly includes a hinge arm configured to engage with the second striker and a latch cam hingedly coupled with the hinge arm. The latch cam is movable between an engaged position and a disengaged position, and a top surface of the latch cam abuts the first striker in the engaged position. A door is rotatably coupled with the appliance body by the hinge receiver and the hinge assembly and is rotatable about a door axis between open and closed positions.

Abstract: In an example implementation, a method of compensating for dimensional variation in 3D printing includes receiving a 3D object model that represents a 3D part to be printed. The method also includes receiving a build material type and a position for printing the 3D part within a build volume. The method includes determining from the position, target subvolumes of the build volume into which the 3D part is to be printed, retrieving a dimensional compensation factor associated with each target subvolume, and then applying each dimensional compensation factor to the 3D object model to scale the 3D part according to the position of the 3D part within the build volume.

Abstract: An example of a computer-readable medium is provided to store machine-readable instructions. The instructions may cause a processor to receive three-dimensional (3D) object representations of an object. The distance between points of a grid applied to 3D object representation and random points on the 3D object representation may provide a sampling error used in calculating a modeling accuracy between the 3D object representations.

Abstract: According to an example, a computing apparatus may include a processing device and a machine readable storage medium on which is stored instructions that when executed by the processing device, cause the processing device to access, from a sensing device, information pertaining to formation of a part of a 3D object in a layer of build materials upon which fusing agent droplets have been or are to be selectively deposited. The instructions may also cause the processing device to predict, based upon the accessed information, a quality of the part and output an indication of the predicted quality of the part.

Abstract: Examples associated with digital composition hashing are described. One example method includes receiving a digital composition file from a user. The digital composition file may include a top-level design and a hierarchy of sub-level designs. A hashed structure may be generated from the digital composition file, where a node in the hashed structure for the first sub-level design is generated based on hashes of sub-level designs below the first sub-level design in the hierarchy. The hashed structure and a hash of the digital composition file are stored in association with the user.

Abstract: Examples disclosed herein relate to selecting a 3D printing parameter based on voxel property association and conflict resolution. In one implementation, a processor assigns properties to a voxel of a 3D print object based on a first and second zone including the voxel and a condition of a first property associated with the first zone and a condition of a second property associated with the second zone. The processor may update the assigned properties to resolve conflicts between the properties and select a 3D printing parameter based on the assigned properties.

Abstract: Certain examples described herein relate to a removable unit for a three dimensional printing system. The removable unit comprises at least one compartment to store build material for a three-dimensional print job, a coupling to engage with a printer device of the three-dimensional printing system, and a memory. The memory is configured to store instructions for the three-dimensional print job for the printer device, and the instructions are readable from the memory by the printer device when the removable unit is engaged with the printer device.

Abstract: The present invention provides for an interposer subassembly that is suitable for an electronic system having at least one integrated circuit (1C) component. The interposer subassembly comprises a flexible base layer, having a first surface and an opposing second surface, at least one active electronic circuit component, operatively integrated within said flexible base layer, and at least one first patterned contact layer, provided on any one of said first surface and said second surface of said flexible base layer and which is configured to operably interface with said at least one active electronic circuit component and the at least one 1C component.

Abstract: A radio frequency (RF) generator is configured to generate a RF signal. The RF signal can be modulated by a pulse having one or multiple states. During an initial state at pulse initiation, the RF generator adjusts the impedance match by selecting the frequency of the RF signal. During a second state of the pulse, the RF generator adjusts the impedance match using a matching network. The first state includes controlling the RF generator to output a power burst, and the second state includes controlling the generator to output an operating power.

Abstract: One example of a method includes receiving a three-dimensional (3D) model of an object to be 3D printed and voxelizing the 3D model to define a plurality of voxel layers. Each voxel layer defines a plurality of voxel rows including an initial voxel row. The method includes for each voxel layer: exclusively oring (XORing) a key voxel row with the Initial voxel row to provide an initial delta row; and for each voxel row from the voxel row following the initial voxel row to a further voxel row of the plurality of voxel rows, XORing each voxel row with the previous voxel row to provide a delta row for each voxel row.

Abstract: An example technique for creating a voxel representation of a three dimensional (3-D) object can include obtaining a shape specification of a 3-D object and a number of 3-D objectives. The example technique for creating a voxel representation of the 3-D object can also include creating a voxel representation of the 3-D object by assigning a material type from a number of material types to each voxel of the voxel representation that defines the 3-D object. The example technique creating a voxel representation of a 3-D object can also include evaluating the voxel representation to determine whether the number of objectives are met.

Abstract: An example of a non-transitory computer-readable medium storing machine-readable instructions. The instructions may cause the processor to receive a three-dimensional (3D) object representation and subdivide it into a triangular grid. Curved triangles may be calculated for triangles in the triangular grid. The triangles may be subdivided and differences calculated between corresponding sections of the curved triangles and the received 3D object representation.