Sony 'Trinitron' Colour Television Set
From Object Wiki
| Sony Trinitron colour television set | |
|---|---|
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| Manufacturer | Sony |
| Production years | (unknown) |
| Production location | (unknown) |
By the 1970s televisions had mostly changed to the new 625-line system. Sony developed this television to take advantage of the higher standard and designed a new tube giving a sharper picture with superior colour. It sold well on the basis of its reasonable price and high performance. The Sony Trinitron represents the first step towards Japanese dominance of world television markets.
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[edit] How it works
In a black-and-white TV, the screen is coated with white phosphor and the electron beam “paints” an image onto the screen by moving the electron beam across the phosphor a line at a time. To paint the entire screen, electronic circuits inside the TV use the magnetic coils to move the electron beam in a “raster scan” pattern across and down the screen. The beam paints one line across the screen from left to right. It then quickly flies back to the left side, moves down slightly and paints another horizontal line, and so on down the screen. As the beam paints each line from left to right, the intensity of the beam is changed to create different shades of black, grey and white across the screen. Because the lines are spaced very closely together, the brain integrates them into a single image. A TV screen of this period has 625 lines visible from top to bottom.
In a colour television, there are three beams, one each for red, green and blue. A metal mask is aligned to separate the three colours. In Trinitron televisions the coding mask is a series of vertical metal wires.
[edit] Memories
I had this when I was a kid, in the 1990s. My parents left it in the sun room. It was one of three televisions we had. It just kept working, and working well I may add, so we kept it. They got it some time in the 1970s. It worked for thirty years until one fateful day in 2003, when the lights finally went out on it for the last time. I said goodbye as it was kicked to the curbside for the boot. Along with a childhood’s worth of stickers I’d put on it in my youth.
— Maddie of Stamford, CT.
We did not own one but the Sony Trinitron was the first colour television I used to see regularly from 1972. The first programme/series I remember seeing on it was Dr Jacob Bronowski’s The Ascent of Man. The picture quality and sound was amazing.
— Dennis Wills
My first memory of colour TV was in late January 1972 when I went around to my friend’s. We watched Carnival of Monsters, a rather good Dr Who yarn from the Jon Pertwee era. Before or after, I can’t remember, we were watching the news and for some sad reason I noticed that the BBC’s Keith Graves, reporting from Northern Ireland, was sporting a black Life on Mars-type raincoat complete with huge buttons, belt, shoulder straps and the rest of the 70s sartorial works. But, with the top buttons of his coat undone to show off the sober BBC knotted tie, a little bit of the coat’s red lining could be seen. Back home, and come the late evening news when the Graves report was repeated, I bored the pants off my Mum and Dad by pointing to our (black and white) screen and yelling “That bit of his coat is red - it really is”. Eeh, little things - tell it to youngsters today and they just won’t believe you!
— Doug Millard
It took such a long time for the TV to warm up... I was too imppaatiieennntt!!!!!!
— anon
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Do you remember this television? Add your memories. |
[edit] In the Science Museum
Source: Anonymous Inv: No: E2005.343.2
This object is currently on display in the Dan Dare & the Birth of Hi-Tech Britain exhibition at the Science Museum, London.