Stairway to holography (IMAGE)
Caption
Approximate bit rate magnitude of various telecommunication devices according to their year of introduction. Starting with the optical telegraph (or Chappe's semaphore) presented to Napoleon Bonaparte in 1798, with typical rate of transmission of approximately 2 to 3 symbols (196 different types) per minute, or 0.4 b/s. Followed by the electrical telegraph, popularized in the early 1840s using Samuel Morse's code, achieving a rate of approximately 100 b/s. Graham Bell's telephone was introduced in 1876 and supported voice frequency transmission up to 64 kb/s. The early NTSC black and white electronic television, available in the 1940s, had 525 interlaced lines and displayed images at a rate of 29.97 frames per second at a bit rate of 26 Mb/s7. The color NTSC format was introduced 10 years later and tripled the black and white bandwidth to accommodate red, green, and blue channels. More recently, the digital video format makes it easier to establish the bit rate based on pixel count (excluding compression) with HDTV 720p@1.33 Gb/s in 1990, ultra-HDTV 2160p(4K)@12.7 Gb/s in 2010, and currently 4320p(8K)@47.8 Gb/s. Holographic 3D displays is expected to have a with a data rate of 3 × 1015 b/s, and by extrapolation of the previous technology is predicted to emerge commercially by 2100.
Credit
by Pierre-Alexandre Blanche
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Credit must be given to the creator.
License
CC BY