Video projectors

A projector or image projector is an optical device that projects an image (or moving images) onto a surface, commonly a projection screen. Most projectors create an image by shining a light through a small transparent lens, but some newer types of projectors can project the image directly, by using lasers. A virtual retinal display, or retinal projector, is a projector that projects an image directly on the retina instead of using an external projection screen.

The most common type of projector used today is called a video projector. Video projectors are digital replacements for earlier types of projectors such as slide projectors and overhead projectors. These earlier types of projectors were mostly replaced with digital video projectors throughout the 1990s and early 2000s, but old analog projectors are still used at some places. The newest types of projectors are handheld projectors that use lasers or LEDs to project images. Their projections are hard to see if there is too much ambient light.

Movie theaters used a type of projector called a movie projector, nowadays mostly replaced with digital cinema video projectors.

Video Conference

Videotelephony comprises the technologies for the reception and transmission of audio-video signals by users at different locations, for communication between people in real time. A videophone is a telephone with a video display, capable of simultaneous video and audio for communication between people in real time. Videoconferencing implies the use of this technology for a group or organizational meeting rather than for individuals, in a videoconference. Telepresence may refer either to a high-quality videotelephony system (where the goal is to create the illusion that remote participants are in the same room) or to meetup technology, which goes beyond video into robotics (such as moving around the room or physically manipulating objects). Videoconferencing has also been called “visual collaboration” and is a type of groupware.

Conference Systems

The business/organizational needs for office meetings are rigid. Various types of meetings have a wide range of important roles in all aspects of the work, such as project start-up meetings, job summary meetings, progress report meetings, and coordination meetings. The face-to-face meetings of these meetings will cost the organizers and participants a lot of manpower and material resources. Having an efficient and convenient conference call can dramatically reduce the time and resources of organizers and participants. At the same time, it also brought convenience to the conference that was incomparable with traditional conferences.

Digital Signage

Digital signage is a sub-segment of electronic signage. Digital displays use technologies such as LCD, LED, projection and e-paper to display digital images, video, web pages, weather data, restaurant menus, or text. They can be found in public spaces, transportation systems, museums, stadiums, retail stores, hotels, restaurants and corporate buildings etc., to provide wayfinding, exhibitions, marketing and outdoor advertising. They are used as a network of electronic displays that are centrally managed and individually addressable for the display of text, animated or video messages for advertising, information, entertainment and merchandising to targeted audiences.

Educational Laboratory

Learning Lab (LL) is a research methodology developed in 2011 by Aydin Bal that provides research-based guidelines for local stakeholders to develop productive family-school-community partnerships and design behavioral support systems that are culturally responsive to diverse needs, strengths, practices, and goals of all stakeholders within a local school community. The Learning Lab builds organizational capacity in schools and school districts by forming an inclusive problem solving team of multiple local stakeholders (teachers, education leaders, families, students, and local community representatives). In Learning Labs, local stakeholders, specifically those who are historically marginalized from schools’ decision-making activities, collectively examine disparities in behavioral outcomes in their local schools and develop solutions through systemic transformation.
The Learning Lab methodology was adapted from the change laboratory methodology and is grounded in Cultural Historical Activity Theory. The moral purpose of the Learning Lab is participatory social justice. Participatory social justice is about non-dominant communities’ equal participation and influence on decision-making activities. The goal of the Learning Lab methodology is to facilitate collective agency among local stakeholders who develop locally meaningful, socially just, and sustainable systemic solutions to educational equity issues such as racial disproportionality in exclusionary and punitive school disciplinary actions (e.g., detention, suspension, and expulsion).