bloom america

Chapter 872 Digital TV and Display Standards

Catherine's eyes are not only on China, but also on the United States.

And in this case, Catherine can also get free publicity for herself.

To those companies in the United States, Catherine said: Did you see, we are a company that cooperates with China! Look, the Chinese people believe in me so much, and how awesome my products are, you know...

As for China, Catherine can also say: Look, this is my partner in the United States. We are a company with a good reputation...

However, at this time, Catherine did not leave Hong Kong. Although the matter was left to Pu Guanshui, this was only because Catherine was engaged in domestic affairs in the United States.

There are some things that Catherine must solve personally.

…

While Catherine was in Hong Kong, a revolutionary discussion was taking place at Apple's headquarters.

At this time, the person in charge of Apple was Robert Noyce, one of the Eight Rebels, and this discussion was conducted under the auspices of the other party.

What they discussed was even more revolutionary - digital television.

"Recently, our digital TV has made breakthrough progress. Using specialized decoding chips, we can now easily decode hundreds of megabytes of video. And for digital TV, our technology has also

It is capable. Digital TV technology will be able to completely replace the current analog TV, and this also means that our cloud system can be switched more conveniently, which will save a lot of money for us.

burden."

The current cloud system is an analog-digital dual-channel, which is technically more difficult, but if digital TV can be implemented, it means that your own products can get a simpler solution.

Under Catherine's excellent command, they have conducted detailed research and analysis for digital television.

And if it can be fully realized, this will be a huge leap for them.

But there is also a problem: their previous films all needed to reuse digital TV methods to convert analog programs into digital signals.

"We also need to set a standard for the TV format." Noyce thought of what Catherine told him.

Catherine's so-called specifications are defined based on the differences in television formats used by various countries in the future. In fact, they are revised according to the standard resolution of future HDTV.

The so-called HDTV standards are 720p (1280*720, progressive), 1080i (1920*1080, interlaced) and 1080p (1920*1080, progressive), where p represents the English word progressive, and i means interlaced

.

The two common display modes are 720p and 1080i. 1080i is a mode commonly used in most countries in the future. Its resolution is 1920*1080 and has 2.073 million pixels. It was originally produced by ntsc.

Standard countries such as the United States, Japan and South Korea still specify a 60hz field frequency for 1080i, mainly to be in line with their previous standards; while China stipulates a 50hz field frequency for 1080i, which is the same as the previous PAL standard.

Catherine will certainly not do anything 1080P now, and the technology is not so developed now.

The resolution of up to 720i now is enough. This is enough.

But Catherine's technology is not so calculated.

Catherine defines the clarity of the screen according to DPI. And this does not mean that Catherine is preparing to use this definition in the transmission of the TV.

The current TV will only provide resolution of 480i and 600i, that is, 640*480 and 800*600.

Why don't you need to do it?

The answer is simple, because the current TV is still holding it one by one ...

As for why it is not a wide -screen, this is also very easy to understand, because the current TV is 4: 3.

"We will design transmission specifications and high -definition specifications ..."

At this time, Nuus took out the high -definition table formulated by Catherine.

Catherine's high -definition table is actually determined by Catherine based on the future DPI. The root cause is actually the Retina screen used by Apple 4th generation ...

According to Catherine's specifications, the Retina screen specifications are "ultra -clear".

For example, the resolution of 1280*720, when using a 4.00 -inch screen, it has 367.15dpi. This is the Retina screen, which is ultra -clear.

When the resolution of 1280*720 uses a 5.00 -inch screen, it is 293.72dpi, which is no longer a ultra -clear series. This is Catherine's standard.

In the future iPhone4, whether it is clarity, freshness, and resolution, it is impeccable on the mobile phone screen. With the Retina display, everything you see on the screen shows amazing visual effects, because Retina

The ultra -high pixel density of the display has exceeded the scope of human eye. The text of the electronic nine astronomy pages and the text in the email are displayed clearly and sharp in any size. The image in the video and the photo is amazing.

Seeing everything is clearer.

And this comfort is also the reason why Catherine decides to adopt such a grading method.

In fact, when 300dpi or more, it is completely meaningless, so the screens of Catherine 300DPI or above are counted in the ultra -clear -because the maximum debate rate of the human eye is 300DPI.

The higher the resolution, the better the display effect, but if the screen is too small, the pixel density exceeds the ability of human eye resolution.

Human eye resolution ability actually refers to the perspective, that is, the distance from pixels to the distance from pixels to human iris.

The density can achieve the same effect at a distance, and the eye muscles will be more relaxed. The handheld device recognizes that the retinal resolution limit is 300dpi. As for the display, it is a bit farther, but if you know the 300DPI choice first ...

… Then I guess it is not pleasing to the eye.

For example, Catherine, after knowing the Retina display, when you see a display, you are going to calculate the standard DPI of others, and then despise each other in various ways ...

No way, it has been brainwashed by Apple ...

And 240dpi belongs to the full HD series.

96DPI is ordinary size, 120DPI is large size, and so on.

The lowest standard is 32DPI.

In fact, DPI is very good, so use iPhone4 as an example. The pixel of this mobile phone is 3: 2, so the resolution of this phone is also very simple.

(2x)*(2x)+(3x)*(3x) = 3.5*3.5

x*x = 3.5*3.5/13

x = 0.9707

Then Retina screen length: 3*0.9707 = 2.9121 inches, width: 2*0.9707 = 1.9414 inches

So, DPI is 960/2.9121 = 329.65dpi

The official announcement of Apple in the 21st century is 326DPI, so the actual size of the RETINA screen should be 3.53 inches to be explained reasonably.

"According to our requirements, the next generation of the display level, we will reach 96DPI, which will become a standard clarity ..."

Neus explained to everyone like this.

"In terms of cloud systems, we will not promote this high -definition calculation method for the time being. This calculation method will be promoted in the future movie system ..."

Although the first to do the TV system is now, it is not a simple matter to make the TV system realize high -definition. Apple is preparing to prepare this matter in the end.

And this also means that this will be a great reform of the TV.

And according to Neus's thoughts, Catherine's DPI segmentation method seems to be a bit hasty ... Or, some are too early.

If you want to achieve all HD and ultra -high -definition in accordance with this category, then you don't know what's the matter of that year. At this time, it is too early.

Therefore, in terms of TV, Neos is classified according to the spare plan, that is, the resolution scheme.

"Digital TV will provide two resolution, and we can also classify customers according to TV ..."

The future TV will be divided into two grades, one high -resolution version, and the other is the low -resolution version.

The low resolution version is the resolution of 640*480; while the high -resolution version is the resolution of 800*600.

Of course, because it is a CRT TV, the low -resolution display with high -resolution TV can also be completely clear, and this is unable to do what LCD TV cannot be done -but now it seems that there is no LCD ...

The cloud system uses a unified playback method, that is, a program of 800*600 resolution.

But when on -demand, it can be distinguished, 640*480 and 800*600. These two resolution, but there is a big difference.

Through this distinction, people stare at the resolution of this 800*600 and want to "enjoy high -definition". At this time, the company sells the price of 600i TV programs of 480i resolution TV programs, and then use it to use it again.

600i TV sells higher prices. This is the wishful thinking of these capitalists ...

It's really a slap ...

Nympho

Fifth!

Five more complete!

!#

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