bloom america

In January 1971, Intel Corporation entered an intense research and development stage—the development of 32-bit CPUs had entered a critical juncture.

At this time, Catherine also personally worked at Intel's Thunder Lab, just to test the CPU of her first 32-bit system one by one.

The development architecture of 32-bit systems is a completely new architecture.

Integrating the core display and processing unit into one can provide hard-decoded video and audio playback, which is also a very important function of Capricorn.

- Of course, the premise of hard decoding is only possible after the video compression format is developed.

Although Intel has developed digital video technology, this uncompressed video cannot be used for complex tasks such as data transmission.

Although Catherine understands video encoding and other things, when it comes to specific algorithms, Catherine is somewhat powerless in this regard.

The current main public relations problem of 32-bit CPUs is not a hardware problem, but a compression algorithm. If this problem can be solved, then things will undoubtedly be much simpler.

Speaking of which, video compression is also a very important subject.

Regardless of the popularity of AVi, wmv, rm, mkv and other formats in the 21st century, in fact, it is very difficult to create digital compression encoding.

Video compression and calculation are very powerful. As far as general videos are concerned, as far as Catherine knows, the capacity of a complete one-hour love action movie with a resolution of 320x240 is compressed to a terrifying 15MB.

Of course, in that case, the image quality will become worse, and not just ordinary.

The so-called video encoding method refers to the method of converting a file in a certain video format into another video format file through a specific compression technology.

In the 21st century, the most important coding and decoding standards in video streaming transmission are ITU's h.261 and h.263. Generally speaking, the so-called high-definition in the mkv format uses this encoding.

Original, uncompressed video files can reach several gigabytes in size in just a few minutes. Such a video, let alone Blu-ray, can only barely be held up by fluorescent disks that are currently in a theoretical state.

So video compression is necessary.

What Intel is currently researching is m-jpeg technology, which is the decoding chip that will be integrated into computers.

Although Catherine doesn't know much about the algorithm of this technology, she still knows the general direction.

For now, what Catherine covets most is probably mpeg-1 technology.

mpeg is the moving picture expert group (moving-pictu

e-expe

ts-g

oup), established in 1988.

MPEG-1 is the video compression mode used in historical VCDs.

mpeg-1 is the first video and audio lossy compression standard formulated by the mpeg organization. The video compression algorithm was defined in 1990. At the end of 1992, mpeg-1 was officially approved as an international standard. mpeg-1 is customized for CD disc media

Video and audio compression format. The transfer rate of a 70-minute CD is approximately 1.4m

ps.

11. As for DVD, it uses mpeg-2 technology.

Mpeg-1 also has a sister technology, which is m-jpeg technology. These two technologies are one of the technologies that Catherine wants to publicize.

m-jpeg(motion-join-photog

aphic-expe

ts-g

oup) technology, that is, motion and still image (or frame-by-frame) compression technology.

Unlike mpeg, m-jpeg does not use interframe coding, so it is easy to edit with a non-linear editor.

The compression algorithm of m-jpeg is the same as that of mpeg. It is very powerful and can send high-quality pictures, generate fully animated videos, etc.

The so-called Motion Still Image Expert Group is an international organization specializing in the formulation of multimedia audio and video compression technology standards. Its members include more than 400 experts from nearly 30 countries and more than 200 companies and organizations.

But it is a pity that these will not appear until 18 years later. Catherine cannot wait, so whatever she wants to do now, she can only do it herself.

The reason why this technology is studied is because m-jpeg technology is often used to "translate" the analog video signal of a closed-circuit TV camera into a video stream and store it on the hard disk. In other words, this technology can be said to be analog video

It has become a skill that must be lit on the digital video "skill tree".

Generally speaking, m-jpeg and mpeg-1 are the mainstream technologies in the future, but their fatal weakness is that they consume a lot of hard disks and cannot meet the needs of security and real-time recording situations at the same time.

But from a historical perspective, these two techniques are "basic skills" that one must face. Just like in the game, although the power of fireball is very low, mages often have to learn this magic. This

It’s not that they will definitely like it, but this is indeed a “pre-requisite skill”.

Other than that, Catherine didn't have much to worry about.

Maybe the hard drive is not powerful, but optical disc technology has matured, and it is completely feasible to put such videos on optical discs.

Therefore, the "technology tree" must be lit up, so that subsequent research can be carried out... As far as the history that Catherine knows, in the 21st century, the m-jpeg of the Moving Still Image Expert Group and the International Organization for Standardization Moving Image

The MPEG series standards of the expert group can be said to exist like two mountains. In addition, real-comwww.piaotian.comv and Apple's quicktime are also widely used on the Internet.

However, Catherine also knows that the national conditions in China and abroad are somewhat different.

As far as China is concerned, the most popular one is rmv

This format, but most of these formats in Europe and the United States will cause problems such as infringement - these are rarely rmv from Europe and the United States.

It can be seen through the hard decoding - so in Europe and the United States, many video formats are somewhat different from those in China.

But at this time, Catherine was "using it". Although she didn't understand the algorithm, Catherine still accepted the advantages of each video format.

Now Catherine continues to ask for a simple, high compression rate algorithm.

After all, the current simulation video is just a strategy of power. The cloud system needs a digital practical mode one by one. At least when playing the video, this requires this.

However, the cloud system client itself cannot decoding, and the development of hasty is difficult to apply its own products. It is also difficult.

But ... if it is on other occasions, it will be different.

The main disadvantage of M-JPEG is that the compression efficiency is low. The M-JPEG algorithm is compressed according to the content of each frame, instead of compressing according to the differences between adjacent frame images.

Storage, the space occupied by storage is as large as 8 ~ 15KB per frame, it is best to only 3K bytes per frame, but if the high compression ratio is used, the video quality will be seriously reduced.

However, under certain conditions that are not very strict with the requirements for frames, the weakness of M-JPEG has created a better cost-effectiveness.

The advantages of this video are very important in infant monitoring rooms, digital monitors, etc. to ensure the continuity of the picture.

As one of the "technology trees" that must be lit, Catherine looks very heavy for this product.

The new generation of cloud systems now must not use the current simulation video mode again. Although there are more bandwidths in this case, the problem is also obvious that the burden on the server side is unimaginable.

Although the M-JPEG is not suitable for the video of the cloud system, it also has the significance of reference.

And you know, the market and monitor market is very broad or even very promising.

As for the MPEG technology, it is even more ideal.

But to say it, there are many shortcomings in MPEG. First, the compression ratio is not large enough, and it is usually okay, but when the problem is stored as data, the problem is large.

It is even more headache. Especially at this time Catherine, the hard disk capacity has been "MB".

The second is that the image clarity is not high enough. Because the maximum definition of MPEG-1 is only 352x288, considering the capacity, simulated digital quantitative losses and other factors, the definition is not high.

As far as the video itself is concerned, if the mixing of the TV is not large, the simulation TV can also kill MPEG-1.

But after all, in the future, VCD and DVD technology can use this technology. As far as the civilian field is concerned, this aspect is obviously better, and the prospects are infinitely vast.

"Capricorn will become the center of the new generation of audiovisual audiovisual entertainment."

Catherine said that.

"The era of simulated video is coming to an end after experiencing its glory, and what we will face next is the era of digitalization. Digital technology will become the mainstream of the future!"

Catherine said at the mobilization meeting.

Mocho seats will not be pushed to the civilian market first, but in the field of business and medical care. That must be very good.

The cloud system now basically meets the demand of the people's "from scratch", but this demand has not changed.

In this case, even if you come up with new technologies, you may not be able to get recognition, and at that time, you will lose money at that time.

If you can use it, it will be different.

Especially in the category of medical care, if this is in this regard, it will definitely be useful.

From high -end to low -end, and then slowly popularize, here is the strategy connected by Catherine.

In the end, the era of digitalization will come.

Nympho

I have been discussing the text recently ...

By the way, some of the contents of this chapter are the computer papers that are integrated by our papers.

There is another tomorrow.

(To be continued)