XpanD 3D

XpanD 3D is a brand associated with active-shutter stereoscopic display technology, particularly liquid-crystal shutter glasses used for 3D cinema, television, projectors and other display equipment. In an active-shutter system, the display presents the left- and right-eye images in rapid alternation while electronically synchronized glasses alternately make one lens opaque and then the other. The viewer's visual system integrates the two image streams into a stereoscopic picture. The brand's significance lies less in a single consumer device than in its role within the hardware and standards ecosystem that developed around electronic 3D during the late 2000s and early 2010s. Active-shutter systems can preserve the full spatial resolution of each eye's image and maintain neutral color reproduction when compared with anaglyph methods that use colored filters. They can be used with cinema projectors, televisions, computer displays and home-theater projectors, provided that the display and synchronization equipment can operate at suitable frame rates. XpanD 3D technology was also connected with industry efforts to improve interoperability between manufacturers. In March 2011, Panasonic worked with XpanD 3D on the M-3DI Standard, an initiative intended to make active-shutter glasses and compatible 3D equipment work more consistently across brands. The effort sought participation from manufacturers of televisions, computers, notebooks, projectors and cinema hardware. The initiative was later superseded in August 2011 by the Full HD 3D Glasses Initiative, a broader agreement involving several major electronics companies and using protocols based on the same general technology family. The stated objective was to make universal glasses available for newer equipment while supporting backward compatibility with earlier 3D televisions. Active-shutter technology has important technical trade-offs. Because each eye receives alternating frames, the display normally needs a higher refresh rate than a conventional two-dimensional system. The glasses also reduce the amount of light reaching the viewer and can be heavier or more expensive than passive glasses because they contain electronics and, in many designs, batteries. Synchronization methods and operating frequencies may differ between manufacturers, creating compatibility problems. Crosstalk, flicker, reduced brightness and synchronization errors can also affect image quality, particularly when older or mismatched display equipment is used. XpanD 3D should therefore be understood as a specialist 3D technology brand rather than as a general consumer-electronics manufacturer. Publicly available reference material identifies its participation in active-shutter standards development and its association with liquid-crystal shutter systems, but does not establish a complete corporate history, headquarters, ownership structure, executive roster, current product catalog or present operating status. Those fields remain unconfirmed.

XpanD 3D is associated with the active-shutter approach to stereoscopic imaging. This technique displays separate left-eye and right-eye images in alternating succession. Liquid-crystal lenses in the glasses are synchronized with the display so that one eye is blocked while the other receives its intended image, then the roles reverse. When the alternation is sufficiently rapid, the viewer perceives a unified three-dimensional image. The underlying display method has a long history. Mechanical forms of alternating-eye viewing were demonstrated in the early twentieth century, while electronic liquid-crystal shutter glasses emerged later alongside computer graphics, video games and specialized visualization systems. Active-shutter systems became more practical as displays and projectors gained higher refresh rates and better synchronization capabilities. During the 2010–2013 period, the method was used in portions of the 3D television, home-theater and cinema markets. XpanD 3D's documented historical role is primarily connected to standardization. In March 2011, Panasonic and XpanD 3D announced the M-3DI Standard, seeking to reduce incompatibility among active-shutter products made by different companies. The initiative covered a broad range of possible equipment, including televisions, computers, notebooks, projectors and cinema hardware. Other manufacturers subsequently joined the agreement. In August 2011, M-3DI was superseded by the Full HD 3D Glasses Initiative, which brought together additional large electronics manufacturers and addressed infrared and radio-frequency protocols for universal glasses. The announcement described a goal of making the glasses backward compatible with 2011-era active 3D televisions. The technology offers several potential advantages. Unlike anaglyph glasses, active-shutter glasses do not depend on red-and-cyan filters and can support full-color viewing. Unlike many polarized systems, they can retain the full spatial resolution of each eye's image when the display chain is designed accordingly. The same general approach can be used with cinema projection, LCD or plasma televisions, computer displays and compatible projectors. Its disadvantages limited broader adoption. Each eye effectively receives only half of the alternating image stream, so high refresh rates are needed to avoid visible flicker. The glasses block light for part of every cycle and may be relatively heavy, costly or battery-dependent. Crosstalk can occur when display pixels cannot change state quickly enough between the two eye images. Different manufacturers may also use incompatible synchronization frequencies or protocols. These issues, together with the broader market shift away from consumer 3D television, make the present status of the XpanD 3D brand difficult to verify from the available material.

• 2011

  M-3DI Standard announced

  [1]Active shutter 3D systemen.wikipedia.org

  Panasonic and XpanD 3D announced a cross-manufacturer standardization initiative for active-shutter 3D glasses and compatible display equipment.

• 2011

  M-3DI gains additional industry participants

  [1]Active shutter 3D systemen.wikipedia.org

  Several television, projector, computer-display and electronics manufacturers joined the M-3DI agreement.

• 2011

  Full HD 3D Glasses Initiative announced

  [1]Active shutter 3D systemen.wikipedia.org

  A broader industry agreement superseded M-3DI and pursued universal active 3D glasses based on infrared and radio-frequency protocols.

A specialist stereoscopic-display technology brand focused on electronic active-shutter 3D viewing and cross-manufacturer compatibility.

• 3D viewing glasses

  XpanD 3D active-shutter glasses

  Electronic glasses designed to alternate transparency between the left and right lenses in synchronization with a stereoscopic display or projector. The approach supports full-color images and can preserve the resolution delivered to each eye, but requires suitable timing, refresh rates and compatible signaling equipment.

• Display technology

  XpanD 3D active-shutter technology

  A technology platform associated with active liquid-crystal shutter viewing in cinema, television, projector and computer-display applications. Its documented industry role includes participation in interoperability and standardization efforts.

• 2011

  Support cross-manufacturer active-3D standardizationStrategy

  Background

  Active-shutter glasses commonly faced compatibility problems because manufacturers used different synchronization methods and protocols.

  Action taken

  XpanD 3D collaborated with Panasonic on the M-3DI Standard and participated in the subsequent Full HD 3D Glasses Initiative ecosystem.

  Aftermath

  The M-3DI initiative was replaced later in 2011 by a broader agreement aimed at universal glasses and backward compatibility.

  Source

1. 1Active shutter 3D systemen.wikipedia.org