HD HD refers to "high resolution" and has four meanings: high-definition TV, high-definition equipment, high-definition format and high-definition movie. DVD gives people unparalleled audio-visual enjoyment in the VCD era, but with the progress of technology and the continuous follow-up of people's needs, people put forward higher requirements for the quality of video.
Generally, the format with physical resolution over 720p is called HD, and the English expression of HD is abbreviated as HD. Full HD refers to progressive scanning with a physical resolution of 1920× 1080, that is, 1080p HD, which is the top-level HD specification.
Application field and value of HD;
1, audio-visual entertainment field
High-definition technology brings consumers a more realistic audio-visual experience. The rise of high-definition TV, hd projector, high-definition audio and other equipment enables us to enjoy cinema-level audio-visual effects at home. For example, when watching TV series and movies, high-definition picture quality can present more details and richer color levels, which can better restore the creator's intention.
2, education, medical field
High-definition technology also facilitates the application in the fields of education and medical care. In distance education, telemedicine and other aspects, high-definition technology can make remote communication clearer and smoother, and enable students, patients and medical staff to complete communication and diagnosis quickly and accurately.
3. The field of architectural design and simulation
Architectural design, machine manufacturing and other fields can also use high-definition technology for simulation and display. For example, high-definition technology can enable architects and designers to better understand the needs of customers and provide more intuitive and realistic design solutions; In machine manufacturing, high-definition technology can help engineers to better complete machine model design and production process arrangement.
4. Safety monitoring field
High-definition technology also plays a huge role in the field of security monitoring. High-definition surveillance cameras and video recording equipment can provide clearer and more detailed pictures, so that security monitoring can identify criminal suspects or accidents more accurately, thus improving the effectiveness and value of security.
Generally speaking, high-definition technology has profoundly affected people's lives and work, and provided us with richer and more diversified experiences and services.
Reference to the above content: Baidu Encyclopedia-HD