Freeze frame television
Encyclopedia
Freeze frame television: Television
in which fixed ("still") images (the frames of the video) are transmitted sequentially at a rate far too slow to be perceived as continuous motion by human vision. The receiving device typically holds each frame in memory, displaying it until the next complete frame is available.
For an image of specified quality, e.g., resolution
and color fidelity
, freeze-frame television has a lower bandwidth
requirement than that of full-motion television. For this reason, NASA
, which refers to this technique as sequential still video, uses it on UHF when Ku band
full-motion video signals are not available.
Television
Television is a telecommunication medium for transmitting and receiving moving images that can be monochrome or colored, with accompanying sound...
in which fixed ("still") images (the frames of the video) are transmitted sequentially at a rate far too slow to be perceived as continuous motion by human vision. The receiving device typically holds each frame in memory, displaying it until the next complete frame is available.
For an image of specified quality, e.g., resolution
Image resolution
Image resolution is an umbrella term that describes the detail an image holds. The term applies to raster digital images, film images, and other types of images. Higher resolution means more image detail....
and color fidelity
Fidelity
"Fidelity" is the quality of being faithful or loyal. Its original meaning regarded duty to a lord or a king, in a broader sense than the related concept of fealty. Both derive from the Latin word fidēlis, meaning "faithful or loyal"....
, freeze-frame television has a lower bandwidth
Bandwidth (computing)
In computer networking and computer science, bandwidth, network bandwidth, data bandwidth, or digital bandwidth is a measure of available or consumed data communication resources expressed in bits/second or multiples of it .Note that in textbooks on wireless communications, modem data transmission,...
requirement than that of full-motion television. For this reason, NASA
NASA
The National Aeronautics and Space Administration is the agency of the United States government that is responsible for the nation's civilian space program and for aeronautics and aerospace research...
, which refers to this technique as sequential still video, uses it on UHF when Ku band
Ku band
The Kμ band is a portion of the electromagnetic spectrum in the microwave range of frequencies. This symbol refers to —in other words, the band directly below the K-band...
full-motion video signals are not available.