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Colour television
1. After World War II, the Columbia Broadcasting System (CBS) began demonstrating its own sequential colour system, designed by Peter Goldmark. Combining cathode-ray tubes with spinning wheels of red, blue, and green filters, it was impressive enough that The Wall Street Journal had “little doubt that color television had reached the perfection of black and white.” Thus began a long battle between CBS and RCA (Radio Corporation of America) to decide the future of colour television which resulted in abandoning the broadcasts a few months later.
2. Then, in June 1951, RCA proudly unveiled their new system. The design used dichroic mirrors to separate the blue, red, and green components of the original image and focus each component on its own monochrome camera tube. The RCA colour system was compatible with existing black-and-white sets. It managed this by converting the three colour signals into two: the total brightness, or luminance, signal and a complex second signal containing the colour information.
3. In 1952 the National Television Systems Committee (NTSC) was reformed, this time with the purpose of creating an “industry color system.” The NTSC system that was demonstrated to the press in August 1952 and that would serve into the 21st century was virtually the RCA system. It was not until the 1960s that colour television became profitable.
4. In 1960 Japan adopted the NTSC colour standard. In Europe, two different systems came into prominence over the following decade: in Germany Walter Bruch developed the PAL (phase alternation line) system, and in France Henri de France developed SECAM (système électronique couleur avec mémoire (successive colour with memory)). Both were basically the NTSC system, with some subtle modifications. These are still the standards of colour television today, despite preparations for a digital future.
(Encyclopedia Britannica)
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What system formed the basis of Japanese color television standard?
Colour television
1. After World War II, the Columbia Broadcasting System (CBS) began demonstrating its own sequential colour system, designed by Peter Goldmark. Combining cathode-ray tubes with spinning wheels of red, blue, and green filters, it was impressive enough that The Wall Street Journal had “little doubt that color television had reached the perfection of black and white.” Thus began a long battle between CBS and RCA (Radio Corporation of America) to decide the future of colour television which resulted in abandoning the broadcasts a few months later.
2. Then, in June 1951, RCA proudly unveiled their new system. The design used dichroic mirrors to separate the blue, red, and green components of the original image and focus each component on its own monochrome camera tube. The RCA colour system was compatible with existing black-and-white sets. It managed this by converting the three colour signals into two: the total brightness, or luminance, signal and a complex second signal containing the colour information.
3. In 1952 the National Television Systems Committee (NTSC) was reformed, this time with the purpose of creating an “industry color system.” The NTSC system that was demonstrated to the press in August 1952 and that would serve into the 21st century was virtually the RCA system. It was not until the 1960s that colour television became profitable.
4. In 1960 Japan adopted the NTSC colour standard. In Europe, two different systems came into prominence over the following decade: in Germany Walter Bruch developed the PAL (phase alternation line) system, and in France Henri de France developed SECAM (système électronique couleur avec mémoire (successive colour with memory)). Both were basically the NTSC system, with some subtle modifications. These are still the standards of colour television today, despite preparations for a digital future.
(Encyclopedia Britannica)
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What system formed the basis of Japanese color television standard?
- NTSC is the subtle modification of PAL and SECAM systems.
- NTSC system and the systems of PAL and SECAM have many common features.
- NTSC developed quite a new system of color television.
- The system of RCA laid the foundation of NTSC system.
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