Glossary CH4 Flashcards
Video
Series of static images that simulate movement. Borned when the first silent movie was created: Roundhay Garden by Louis Le Prince in 1888.
Vitaphone
- It is a system of sound on disc developed by the Bell Telephone Company and Western Electric. It was used as a match in silent movies to give an environment context and narration to the stories. It was widely used by Warner Brothers in at least 100 of their first movies.
Movie Tone
It is a system of sound recording related in 1922 by Theodore Case and Earl Sponable; it integrated the sound to the images, and it was firstly used by Fox Company, which is now known as 20th Century Fox.
Beta
It is an analogic format to produce home videos. It consisted of a magnetic tape developed by Sony. It was sold in 1975, and it has the capacity of storing 266 to 300 lines depending if it was black and white, or color. It recorded around 2 hours.
VHS
It stands for Video Home System. It was similar to an audio cassette with ½ inch tape. It was highly accepted for around 20 years before the appearance of DVDs.
Flash Memory
It is an EEPROM type memory (Electronically Erasable and Programmable Read Only Memory). It was created in 1984 by Fujio Masuoka. There are many versions of it: some have the shape of a pen, a bar, camera cards, etc. It is quick and silent, and it is easy to carry. It has storing capability that is much higher than its predecessor, the floppy disc.
DVD
It stands for Digital Video Disc or Digital Versatile Disc. It replaced the Beta technology in recording and distributing video material. Its recording process is based on the use of laser instead of electromagnetism. This provides more quality in both audio and video.
Retinal Persistence
It is the effect in the eye’s retina that makes the images perceived by the eye be recorded for a very small fraction of time, like a tenth of a second. When the eye is exposed to a succession of fixed images, the illusion of movement gives life to the magic of cinema. It was discovered by the Belgian Joseph Plateau.
FPS
It stands for Frames per second. It is the amount of frames that are shown on a video in a period of one second.
PAL
It stands for Phase Alternating Line which consists on the using of 25 frames per second. It handles 625 scan lines. It is used in Europe, Asia, and some countries of America.
NTSC
It stands for National Television System Committee. It consists on using 30 frames per second and 525 scan lines (as if the signal were divided in 2 screens of 262 scan lines) to create video, including an aspect ratio of 4:3 and an optimum handling of sound.
Blue-ray
It refers to the technology based on a blue beam that allows the recording of different layers of a DVD, especially designed for high density recording. It may contain from 1 to 4 players and each one has a capacity of 25 GB. It handles HD information (1080p/60), differently from the DVD which only handles 480p or 576p.
SECAM
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EDTV
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HDTV
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