Abstract: Apparatus, systems, articles of manufacture, and methods for adaptive display control in virtual reality environments are disclosed. An example virtual reality display device for adaptive display control in a virtual reality environment includes memory and a processor to execute instructions to detect a first pupil size after a predetermined amount of time, determine a characteristic of a display image, identify a second pupil size from a plurality of pupil sizes correlated with the characteristic of the display image, perform a comparison of the first pupil size and the second pupil size, determine a margin of difference between the first pupil size and the second pupil size, and adjust the characteristic of the display image to change the first pupil size and reduce the margin difference.

Abstract: Apparatus, systems, articles of manufacture, and methods for adaptive display control in virtual reality environments are disclosed. An example virtual reality display device for adaptive display control in a virtual reality environment includes a scanner to detect a first size of a pupil of an eye of a user. The device also includes an analyzer to determine a first characteristic of a display image, reference a second pupil size based on the first characteristic of the display image, compare the first pupil size and the second pupil size, and adjust a second characteristic of the display image when the second pupil size is different than the first pupil size. The device also includes a display screen to present the second characteristic.

Abstract: A printed circuit board (PCB) includes a dielectric plane and a ground plane parallel to and spaced apart from the dielectric plane. The dielectric plane includes a pair of signal traces and a 3-dimensional (3D) grounded (GND) fence located between the pair of signal traces. The 3D GND fence is electrically connected to the ground plane, and protrudes perpendicularly from the dielectric plane. The 3D GND fence is located equidistant from each of the pair of signal traces, and the 3D GND fence is configured to block electromagnetic interference (EMI) from a first of the pair of signal traces to a second of the pair of the signal traces. The pair of signal traces is configured to form part of a noise-sensitive electronic circuit. The 3D GND fence may have a rectangular configuration.

Abstract: Apparatus, systems, articles of manufacture, and methods for adaptive display control in virtual reality environments are disclosed. An example virtual reality display device for adaptive display control in a virtual reality environment includes a scanner to detect a first size of a pupil of an eye of a user. The device also includes an analyzer to determine a first characteristic of a display image, reference a second pupil size based on the first characteristic of the display image, compare the first pupil size and the second pupil size, and adjust a second characteristic of the display image when the second pupil size is different than the first pupil size. The device also includes a display screen to present the second characteristic.

Abstract: Techniques for impedance matching are described herein. The techniques include an apparatus for impedance matching including a trace section having a load impedance. The trace section comprises characteristics generating an impedance match between a main channel impedance and the load impedance.