1991 Starting from the core

Now that Sun Guoqiao reported the name of the blank chip, Su Yuanshan became cheerful when he looked at the circuit diagram.

Yxmpeg1 is Yuanxin’s video decoding chip.

Since it is a video decoding chip, it cannot be changed no matter how much it is changed. At this stage, it is either a video decoding card installed on the computer or a VCD. But the video decoder card needs to list the gold finger, which is obviously not included in this circuit diagram.

That's the VCD.

But Su Yuanshan took a closer look and found that the VCD was not right either, but it did have a video output port.

Su Yuanshan suddenly became interested: "You seem to have designed a hard decoding video playback device?"

Sun Guoqiao nodded in surprise: "Well, you even know how to design circuits?"

He knew that Su Yuanshan was an expert in programming, and he also found out that this guy actually enrolled in applied physics after exempting himself from the entrance examination by relying on programming. At that time, he was feeling emotional, but he never expected that this person not only understood programming, but could also see the circuit he designed at a glance.

Although you can guess a few points from the yxmpeg1 chip, it is still very powerful.

Su Yuanshan just smiled: "You know a little bit, didn't the school computer room have new machines? Each machine is equipped with EDA. Why don't you use EDA? You have to draw by hand."

"There is not enough time to use the computer. It is a bit expensive to use the computer outside of class, so I have to make a sketch first, and then use EDA to complete it in one go." Sun Guoqiao smiled and continued to calculate on the scratch paper with his head down, and quickly finished it on a certain A 10 ohm resistor is added to the line.

"By the way, student Su, how much do you know about microcontrollers?" Sun Guoqiao looked up and saw that Su Yuanshan was still staring at his drawings. He remembered that this guy's father was the top microcontroller expert in the country, so he hesitated and asked.

Su Yuanshan was startled: "You know a little bit, what?"

"Hmm..." Sun Guoqiao scratched his head and said: "My drawing is not perfect at all, it can only be regarded as a sketch. The plan is to design a network-based video player through decoding chip + microcontroller + network card chip."

"Huh?" Su Yuanshan was immediately surprised.

This guy is really talented. Did he think of a set-top box so early? But he immediately realized that this network should not be a TCP/IP network...

"Is this based on the LAN?"

"Yes. After the VCD came out last year, I thought about it. If there is a similar terminal in the entire local area network, then the mpeg format compressed files on each computer can be played through the local area network. This is very convenient during class. , demonstrate the video files on each computer." Sun Guoqiao said sheepishly: "It's just that I'm not very familiar with the network and microcontrollers."

Su Yuanshan suddenly realized, and then he suppressed his laughter - it was nothing more than a video file sharing, and he was able to curve to such an extent to save the country, this guy is also a genius.

After thinking about it, Su Yuanshan said: "Well, in theory, you can do this. You can develop a system that continuously transmits the current computer screen and then displays it on another computer in real time. But this is the field of network and programming. .”

Sun Guoqiao was a little dumbfounded when he heard about programming: "Real-time display? Do you know this...network?"

"Know a little bit."

"..."

Su Yuanshan smiled and said: "Now some people have developed a video format that can be transmitted and played in segments. It is called a streaming media format. It is specially used for network dissemination. It does not need to be copied and downloaded before it can be played."

Sun Guoqiao thought about the concept of streaming media. When he understood that many problems could be solved through pure programming, he immediately realized that the thing he designed did not seem to be of much use. He couldn't help but feel a little frustrated. He threw away the pencil and stared at it. Looking at the drawings in a daze.

Seeing this, Su Yuanshan knew that this guy had been hit, so he smiled and comforted: "But you are also very useful."

Sun Guoqiao forced a smile: "Don't comfort me. After you said that, I realized that I took off my pants and farted..."

"Haha, it's not true. Think about it, if your chip is a chip that can support streaming media decoding, can it play videos transmitted over the Internet?"

Sun Guoqiao nodded: "Theoretically, this is the case. Videos that can be transmitted over the Internet...not to mention that there is no streaming media format you mentioned yet. Even if it is developed, there may not be such a decoding chip, and the transmission speed of the Internet may not be It can be done - besides, since there is a network, there must be a computer. Who would use a machine with a TV or monitor to play online videos? Isn't that just a matter of eating too much? "

"That's not necessarily the case." Su Yuanshan said with a smile: "Slow Internet speed in China does not mean that it is slow abroad. As for matching a TV or monitor - what if it is a TV station program?"

Sun Guoqiao was startled, frowned and thought for a long time before hesitatingly said: "You mean to put the TV program on the Internet? Not through closed circuit?"

"Yeah..." Su Yuanshan nodded: "Don't think about the speed of the Internet first. Sooner or later, that thing will become faster than the current LAN. If you design this now, you can really do it. Then it will be good to sell it to the west - There may be something wrong with the resistor in your lower left corner.”

"Huh? Which one."

"The 100-ohm one probably doesn't have enough resistance." Su Yuanshan took the pencil and draft book and quickly listed the formula for Sun Guoqiao to calculate.

The set-top box thing was developed very early in the West, but it never formed a market. It was almost ten years later in China... but because of the "you know" cheese, a powerful game company was defeated. .

But it eventually became mainstream.

Now that someone has accidentally broken into this field, Su Yuanshan doesn't mind helping push it. Even if you can only eat dust, it would be good to accumulate some technology and get some patents.

…

As the sky gets darker, more and more freshmen enter the study room.

Ye Rudai and Yu Shuyun walked together.

In a major where almost 80% of them are male, the two of them are particularly conspicuous.

Ye Rudai walked towards the middle aisle and was about to enter the empty seat when Yu Shuyun suddenly let out a soft cry.

"Diel, look."

Following Yu Shuyun's fingers, Ye Rudai looked towards the back row of the classroom.

In the back row of the classroom, Su Yuanshan and Sun Guoqiao were whispering to each other, each holding a pen and calculating continuously.

"Both of them seem to be your special prizes that year, right?" Yu Shuyun whispered.

Ye Rudai nodded, narrowed her eyes slightly, pursed her lips, and said with a smile: "Lao Yu, I'll go take a look at the back."

Yu Shuyun had an "I understand" expression on her face, snatched the book from her hand and pushed her to the aisle: "Go ahead."

Ye Rudai walked to the last row and sat down in an empty space next to Su Yuanshan.

She folded her hands on the table, tilted her head, looked at Su Yuanshan with a smile, and stared at Su Yuanshan's profile.

This guy's profile is so pretty... She sighed in her heart.