Abstract: An optical combiner in a display system of a mixed-reality head-mounted display (HMD) device comprises a lens of birefringent material and a ferroelectric liquid crystal (FLC) modulator that are adapted for use with a reflective waveguide to provide multiple different focal planes on which holograms of virtual-world objects (i.e., virtual images) are displayed. The birefringent lens has two orthogonal refractive indices, ordinary and extraordinary, depending on the polarization state of the incident light. Depending on the rotation of the polarization axis by the FLC modulator, the incoming light to the birefringent lens is focused either at a distance corresponding to the ordinary refractive index or the extraordinary refractive index. Virtual image light leaving the birefringent lens is in-coupled to a see-through reflective waveguide which is configured to form an exit pupil for the optical combiner to enable an HMD device user to view the virtual images from the source.

Abstract: Variable-focus lenses are arranged as a lens pair that work on opposite sides of a see-through optical combiner used in a mixed-reality head-mounted display (HMD) device. An eye-side variable-focus lens is configured as a negative lens over an eyebox of the see-through optical combiner to enable virtual-world objects to be set at a close distance. The negative lens is compensated by its conjugate using a real-world-side variable-focus lens configured as a positive lens to provide an unperturbed see-through experience. For non-presbyopes, the powers of the lenses are perfectly offset. For presbyopes, the lens powers is mismatched at times to provide simultaneous views of both virtual-world and real-world objects on the display in sharp focus. Responsively an eye tracker indicating that the user is engaged in close viewing, optical power is added to the real-world-side lens to push close real-world objects optically farther away into sharp focus for the presbyopic user.

Abstract: Variable-focus lenses are arranged as a lens pair that work on opposite sides of a see-through optical combiner used in a mixed-reality head-mounted display (HMD) device. An eye-side variable-focus lens is configured as a negative lens over an eyebox of the see-through optical combiner to enable virtual-world objects to be set at a close distance. The negative lens is compensated by its conjugate using a real-world-side variable-focus lens configured as a positive lens to provide for an unperturbed see-through experience. For non-presbyopes, the powers of the lenses are perfectly offset. For presbyopes, the lens powers may be mismatched at times to provide simultaneous views of both virtual-world and real-world objects on the display in sharp focus. Responsively an eye tracker indicating that the user is engaged in close viewing, optical power is added to the real-world-side lens to push close real-world objects optically farther away and into sharp focus for the presbyopic user.

Abstract: An optical combiner in a display system of a mixed-reality head-mounted display (HMD) device comprises a lens of birefringent material and a ferroelectric liquid crystal (FLC) modulator that are adapted for use with a reflective waveguide to provide multiple different focal planes on which holograms of virtual-world objects (i.e., virtual images) are displayed. The birefringent lens has two orthogonal refractive indices, ordinary and extraordinary, depending on the polarization state of the incident light. Depending on the rotation of the polarization axis by the FLC modulator, the incoming light to the birefringent lens is focused either at a distance corresponding to the ordinary refractive index or the extraordinary refractive index. Virtual image light leaving the birefringent lens is in-coupled to a see-through reflective waveguide which is configured to form an exit pupil for the optical combiner to enable an HMD device user to view the virtual images from the source.

Abstract: Variable-focus lenses are arranged as a lens pair that work on opposite sides of a see-through optical combiner used in a mixed-reality head-mounted display (HMD) device. An eye-side variable-focus lens is configured as a negative lens over an eyebox of the see-through optical combiner to enable virtual-world objects to be set at a close distance. The negative lens is compensated by its conjugate using a real-world-side variable-focus lens configured as a positive lens to provide for an unperturbed see-through experience. For non-presbyopes, the powers of the lenses are perfectly offset. For presbyopes, the lens powers may be mismatched at times to provide simultaneous views of both virtual-world and real-world objects on the display in sharp focus. Responsively an eye tracker indicating that the user is engaged in close viewing, optical power is added to the real-world-side lens to push close real-world objects optically farther away and into sharp focus for the presbyopic user.

Abstract: In one embodiment, an apparatus includes a network management module configured to execute at a network device operatively coupled to a switch fabric. The network management module is configured to receive a first set of configuration information associated with a subset of network resources from a set of network resources, the set of network resources being included in a virtual local area network from a plurality of virtual local area networks, the plurality of virtual local area networks being defined within the switch fabric. The first set of configuration information dynamically includes at least a second set of configuration information associated with the set of network resources.

Abstract: A system may include at least one audio transducer and a controller. The controller may generate at least one actuation signal. The at least one actuation signal may drive the at least one audio transducer such that the at least one audio transducer generates evanescent wave audio signals in proximity to a wearer's ear. The evanescent wave audio signals may decay in strength with distance from the at least one audio transducer. Various other apparatuses, systems, and methods are also disclosed.

Abstract: In one embodiment, an apparatus includes a network management module configured to execute at a network device operatively coupled to a switch fabric. The network management module is configured to receive a first set of configuration information associated with a subset of network resources from a set of network resources, the set of network resources being included in a virtual local area network from a plurality of virtual local area networks, the plurality of virtual local area networks being defined within the switch fabric. The first set of configuration information dynamically includes at least a second set of configuration information associated with the set of network resources.

Abstract: In some embodiments, an apparatus includes a network management module. The network management module is configured to send a request for power output data from a first network element having a first power supply configured to be coupled to a first power outlet, and a second power supply configured to be coupled to a second power outlet. The network management module is configured to receive a first confirmation from the first network element that the first power supply and the second power supply are receiving power. The network management module is configured to send a request to disable a third power outlet and to receive, after sending the request to disable the third power outlet, a second confirmation from the first network element that the first power supply and the second power supply are receiving power. The network management module is configured to define a power distribution table after receiving the second confirmation, the power distribution table designating the third power outlet as unused.

Abstract: In one embodiment, an apparatus includes a network management module configured to execute at a network device operatively coupled to a switch fabric. The network management module is configured to receive a first set of configuration information associated with a subset of network resources from a set of network resources, the set of network resources being included in a virtual local area network from a plurality of virtual local area networks, the plurality of virtual local area networks being defined within the switch fabric. The first set of configuration information dynamically includes at least a second set of configuration information associated with the set of network resources.

Abstract: In some embodiments, an apparatus includes a network management module. The network management module is configured to send a request for power output data from a first network element having a first power supply configured to be coupled to a first power outlet, and a second power supply configured to be coupled to a second power outlet. The network management module is configured to receive a first confirmation from the first network element that the first power supply and the second power supply are receiving power. The network management module is configured to send a request to disable a third power outlet and to receive, after sending the request to disable the third power outlet, a second confirmation from the first network element that the first power supply and the second power supply are receiving power. The network management module is configured to define a power distribution table after receiving the second confirmation, the power distribution table designating the third power outlet as unused.

Abstract: A computer-based method configures a hardware circuit to transfer a message to a message queue in an operating system. The hardware circuit is used to transfer a message to the message queue in the operating system without requiring use of either the operating system or a hypervisor associated with the operating system. The using the hardware circuit uses a logical identifier associated with the message to select an entry in a mapping table of the hardware circuit. A value in the entry in the mapping table is used to select an entry in an action table. The entry in the action table is used to determine a tail pointer for the message queue. The hardware circuit appends the message to a location indicted by the tail pointer without requiring cycles of a hypervisor associated with the strand.

Abstract: A computer-based method configures a hardware circuit to transfer a message to a message queue in an operating system. The hardware circuit is used to transfer a message to the message queue in the operating system without requiring use of either the operating system or a hypervisor associated with the operating system. The using the hardware circuit uses a logical identifier associated with the message to select an entry in a mapping table of the hardware circuit. A value in the entry in the mapping table is used to select an entry in an action table. The entry in the action table is used to determine a tail pointer for the message queue. The hardware circuit appends the message to a location indicted by the tail pointer without requiring cycles of a hypervisor associated with the strand.

Abstract: A computer-based method configures a hardware circuit to transfer a message to a message queue in an operating system. The hardware circuit is used to transfer a message to the message queue in the operating system without requiring use of either the operating system or a hypervisor associated with the operating system. The configuring includes tieing (i) a value in a head pointer register with a head pointer for the message queue stored in the hardware circuit and (ii) a value in a tail pointer register for the message queue with a tail pointer for the message queue stored in the hardware circuit so that the value in the head pointer register equals the stored head pointer and the value in the tail pointer register equals the stored tail pointer. The using the hardware circuit uses a logical identifier associated with the message to select an entry in a mapping table of the hardware circuit. A value in the entry in the mapping table is used to select an entry in an action table.

Abstract: In some embodiments, an apparatus includes a network management module. The network management module is configured to send a request for power output data from a first network element having a first power supply configured to be coupled to a first power outlet, and a second power supply configured to be coupled to a second power outlet. The network management module is configured to receive a first confirmation from the first network element that the first power supply and the second power supply are receiving power. The network management module is configured to send a request to disable a third power outlet and to receive, after sending the request to disable the third power outlet, a second confirmation from the first network element that the first power supply and the second power supply are receiving power. The network management module is configured to define a power distribution table after receiving the second confirmation, the power distribution table designating the third power outlet as unused.

Abstract: According to the invention, a process for averaging two pixel values is disclosed. In one step, an instruction is decoded. A plurality of first operands is loaded from a first input register. A plurality of second operands is loaded from a second input register. An average of one of the plurality of first operands and one of the plurality of second operands is produced. The average is stored in an output register.

Abstract: A method and apparatus for improved performance for reloading translation look-aside buffers in multithreading, multi-core processors. TSB prediction is accomplished by hashing a plurality of data parameters and generating an index that is provided as an input to a predictor array to predict the TSB page size. In one embodiment of the invention, the predictor array comprises two-bit saturating up-down counters that are used to enhance the accuracy of the TSB prediction. The saturating up-down counters are configured to avoid making rapid changes in the TSB prediction upon detection of an error. Multiple misses occur before the prediction output is changed. The page size specified by the predictor index is searched first. Using the technique described herein, errors are minimized because the counter leads to the correct result at least half the time.

Abstract: A random noise generator is included in the drive circuit supplying power to a system indicator that emits optical signals. The random noise generator generates a random noise signal that is introduced into a signal input to the drive circuit so that data or covert channel information is not recoverable from the optical signals emitted by the system indicator.

Abstract: An apparatus and method for mapping memory addresses to reduce or avoid conflicting memory accesses in memory systems such as cache memories is described in connection with a multithreaded multiprocessor chip. A CMT processor reduces the probability of hot-spots in cache operations by hashing certain bits of a physical cache address to form a hashed cache address. By using exclusive OR functionality to hash the index bits, an efficient address transformation is achieved for indexing into an L2 cache memory.

Abstract: A method and apparatus for delivering a device driver to an operating system without user intervention. One or more operating systems (e.g., different operating system programs, different versions of one operating system) execute on a computer platform. During booting of an operating system a device is identified for which a driver is needed. The driver is requested from a service processor of the platform, which includes memory or storage for storing multiple device drivers (or multiple versions of one driver, for different operating systems). The driver is retrieved from the service processor's storage and delivered to the operating system.