A display apparatus comprises a first plate including a first display panel and a first link member, wherein the first link member includes a first internal link configured to move in a longitudinal direction of the first link member, a second plate including a second display panel and a second link member, wherein the second link member includes a second internal link configured to move in a longitudinal direction of the second link member and a hinge member rotatably connecting the first link member to the second link member to thereby rotatably connect the first display panel to the second display panel, wherein at least of the first internal link and the second internal link include a first opposing link including a first rack, a second opposing link including a second rack facing the first rack, and a pinion gear interlocking the first opposing link and the second opposing link.

Display and audio systems and methods for controlling positioning of displays and speakers based on viewer and listener attention are disclosed. According to an aspect, a display system includes a selectively adjust a viewing angle of a display for one or more viewers. The display system also includes a motorized mechanism that controllably positions the display in one of the positions. An attention detection system is configured to acquire movement and position data of the viewer(s). The attention detection system is also configured to determine whether attention of the viewer(s) is directed to the display based on the acquired data. Further, the attention detection system is configured to control the support assembly to adjust the viewing angle of the display for viewing by the viewer(s) in response to determining that the attention of the viewer(s) is directed to the display.

A display device according to an embodiment includes: a display panel; a side frame that is disposed on a rear side of the display panel and disposed on opposite edges in a first direction of the display panel; a length change member that is disposed on the rear side of the display panel and has a changing length in the first direction; a link bar that is connected to one edge of the length change member; and a guide member where a connection portion of the length change member and the link bar is disposed, wherein the other edge of the link bar is connected to the side frame, and the guide member includes a curved groove, and the connection portion of the length change member and the link bar moves in the groove.

A stand for use with a laptop or portable computing device, such as, but not limited to, a MacBook. The stand elevates a laptop or portable computing device up off a desk or table top, reducing neck strain in the user and creating a more comfortable work setting. An adjustable-height stem connects a base and platform. The base also may be used alone, and comprises means for support the bottom of a computer stand. The base also may comprise storage space or shelves.

Implementations relate to a moveable display system. In some implementations, a control unit includes a first support and a second support coupled to the first support. The second support is linearly translatable along a first axis in a first degree of freedom with respect to the first support, and at least a portion of the second support is linearly translatable along a second axis in a second degree of freedom with respect to the first support. The control unit includes a display unit rotatably coupled to the second support. The display unit is rotatable about a third axis in a third degree of freedom with respect to the second support, and the display unit includes a display device.

An articulating arm assembly for a passenger seat includes a static portion attachable to the passenger seat, a rotation portion attached to the static portion such that the rotation portion is pivotable about a rotation axis, an arm body attached to the rotation portion, such that the rotation portion and the arm body are movable between a stowed position and a deployed position, and a wiring portion disposed inside the arm body and extending from the arm body into the rotation portion. The wiring portion extends parallel to the rotation axis from the rotation portion toward and into the static portion.

Support systems and stands for electronic devices include tilt hinges, lift arms, and their component parts. Some tilt hinges include assemblies for guiding and retaining bars or protrusions into preferred positioning within receiver openings to unify the parts, particularly as they move, and to reduce wobble or slop in the joints. Lift arms provide simplified and low-cost guidance and counterbalance mechanisms for controlling movement of the electronic device relative to the base of a stand. In some cases, the lift arms have sheaths to help protect or cover mechanisms while allowing additional space for the mechanisms within the lift arm. Other interconnection systems hide and protect a connector interface between the stand and the electronic device within a housing until unlocked and the connector is moved into an exposed position. These systems improve efficiency, comfort, ergonomics, accessibility, and user satisfaction of the electronic devices and their supports.

Provided is a stand for a device that is capable of suppressing interference between a plurality of arms that are rotatably coupled and a device attached to an arm. The stand for a device includes a supporter that includes a first fulcrum; a first arm that is coupled to the supporter so as to be rotatable around the first fulcrum, and that includes a second fulcrum on one end; a second arm that includes a first end and a second end, the first end being coupled to the first arm so as to be rotatable around the second fulcrum; a grip; and a joint that is coupled to the second end of the second arm and the grip, is couplable to a device, and for which an orientation of the device with respect to the second arm is changeable by an operation of the grip.

A coupling for swivably coupling an arm to a post, the coupling in use cooperating with the post as an engaged element via a post interface, and with the arm as an engaged element via an arm interface, wherein the coupling including its interfaces provides limited relative rotational movement between the arm and the post about a swivel axis extending along a longitudinal axis of the post, wherein the limited rotational movement is provided in a rotational zone that corresponds to a single revolution about the longitudinal axis. The disclosure further relates to a coupling system, and to a monitor support.

A portable cross arm support device for temporarily supporting electrical conductors of a power transmission or distribution system. The portable cross arm support is configured for vertical lifting of the conductors. The portable cross arm is configured to fold for facilitating transportation. The portable cross arm has a main support pole mounted in a lifting bracket. Embodiments of the portable cross arm utilize a worm gear lifting system for vertical lifting of the conductors. The cross arm has two opposing horizontal line arms configured to support the electrical conductors. The opposing horizontal line arms extend from a T-connector. The T connector allows the horizontal line arms to pivot to a vertical orientation to provide for folding of the portable cross arm.