The programming matter continued until Friday of this week. Banxia was really unable to figure it out, so Wang Ning asked a friend to invite a Huawei communications expert to come over.

When the expert saw the code written by Bai Zhen, his facial features wrinkled up.

"In my memory, I saw that thing once when I was very young. It was getting dark and the distance was too far, so I could only see a blurry shadow." A girl's voice came from the headphones, "

It crawls upstairs, its legs are very long, like a big black spider, the teacher said they come from the moon."

"Black Moon? OVER."

"Yes, it's the black moon." The girl said, "They only appear after the black moon comes."

"What is the reason for the arrival of the black moon?" Bai Yang sat on a chair, holding a pen between his fingers, frowning, "It can't just appear suddenly for no reason, right?"

Although it is crucial to find the cause of the doomsday disaster, no one can say whether the cause can be influenced and changed by humans.

What if the Black Moon discovered the Pioneer or Voyager probes?

Do humans have the ability to capture the Voyager now?

Furthermore, what if the existence of human beings is discovered by the Black Moon?

Is it possible that human beings still have the ability to hide the entire earth?

The question is a question, but there may not be an answer. If the natural disaster has reached the point where human power cannot be restored, then even if it can be predicted in advance, the only thing people can do is to minimize the losses, whether it is an earthquake or a tsunami, although it is impossible to prevent it with just human power.

Confrontation is unavoidable, but at least it can tell people to evacuate and run away. But when the moon sets, where will people run?

Go to outer space?

Those three years are definitely not enough, three hundred years would be about the same.

"Let's find a way to hide the earth." Bai Yang said, "Miss, do you have any good ideas? OVER."

"Eh?" The other end was stunned for a moment, "What do you mean?"

"It means hiding the entire earth so that Black Moon can't find us." Bai Yang said casually, "If it can't find us, won't we be safe? OVER."

"Then...then cover the earth with black cloth?"

"Where can you find so much black cloth?" Bai Yang laughed, "The earth's surface is 500 million square kilometers, and you have to use 500 million square kilometers of black cloth. This is even more outrageous than putting a cover on the Pacific Ocean, OVER."

That being said, the concept of "hiding the earth" gave Bai Yang a thought. Just in case, I mean just in case, people could find out the real reason why the Black Moon came, and how they found the Black Moon.

Earth, maybe this is really a method? How does it collect specific information about the Earth? Then people work hard to eliminate this information, cut off the transmission channels of information, and hide the location of the Earth.

This sounds incredible.

Just like during World War II, the British used lights to fake cities at night and mislead German bombers. Using the same idea, humans can carry out strategic camouflage and misdirection on an unprecedented scale!

Hide the whole earth.

If the Black Moon observes the Earth through visible light, then people hide themselves in the visible light band.

If the Black Moon observes the earth through infrared light, then humans hide themselves in the infrared light frequency band.

Prescribe the right medicine to the right situation.

Bai Yang thought so.

Although it was difficult for him to imagine what kind of God's project it would be in actual operation, hiding a huge sphere with a radius of 6,370 kilometers and letting it disappear in the eyes of the black moon, playing a life-and-death hide-and-seek game on a cosmic scale, but

This is a possible direction to solve the problem. In the future, it has been proven that humans and Black Moon will definitely lose in a head-to-head confrontation. Since they can't defeat it, why can't they hide?

Bai Yang decided to send this idea to Zhao Bowen and let him think about it.

·

·

·

at the same time.

Separated by a wall.

Wang Ning and Bai Zhen are still working hard on the code. This afternoon, Huawei's communications experts took time out of their busy schedule to come over. The latter is an old classmate of Wang Ning's old classmate. He happened to be on a business trip in Nanjing recently and came to visit when he heard the demand.

Help is coming.

After reading Bai Zhen's code, he commented tactfully that no matter how thin it is, it cannot make up a mountain of shit.

So the professionals went to the battle in person, with anger sinking in the Dantian and a rainbow running through the sun, easily laying the foundation for the shit mountain, the first solid lump of anal fissure-grade thick and hard stool.

After the expert has done it, he leaves without charging any fees. He waved his hands and said that they are all friends. They can do a small favor and with a simple effort, the money is free. I still have something to do, so I will take the first step and see you later.

Bai Yang looked at his back and sighed, "If I had been admitted to college back then, I would be working at Huawei today and be as handsome as him."

Wang Ning said that you were able to pass the university entrance examination because of your grades.

Next, the two of them rolled up their sleeves and stayed up all night, continuing to build a complete image transmission link on the second-hand 725. The experts got the basics, the integrated development environment, and the compiler. Bai Zhen praised him for being an expert in the industry. His code writing

It's like "One Hundred Years of Solitude" by Marquez.

Wang Ning said you mean the level is as high as "One Hundred Years of Solitude"?

Bai Zhen said it was as incomprehensible as "One Hundred Years of Solitude".

The next huge problem before them is the transmission rate.

"How fast can this thing go?" Wang Ning patted the black casing of the radio station.

"If we use AFSK, the speed may not be faster." Bai Zhen said, "I estimate it is about 800 to 1,000 bps."

"How did you calculate it?"

"According to the frequency of sound, we convert all data, whether images or codes, into sound transmission, but the frequency of sound has a limit. The sound frequency that human ears can normally hear is only 20,000 Hz, so the sound card

The working range is this range." Bai Zhen replied, "Theoretically, the digital signal transmission rate cannot be higher than its intermediate frequency, which is 10,000 Hz, 10kbps."

"10kbps, ten thousand bits per second..." Wang Ning calculated in his mind, "How much does it convert to kB? Divide by 8?"

"Divide by 10." Bai Zhen said, "10kbps is converted into the network speed we often call 1kB/s, one byte per second, but this is a theoretical value and the highest speed."

"1kB per second or the theoretical maximum speed?"

"Yes, 1kB per second is already an unreachable theoretical value. In actual engineering practice, a speed of 1000bps is considered good." Bai Zhen nodded.

"A speed of 1000bps..." Wang Ning calculated, "0.1kB/s? 100 bytes per second? 100 B?"

"Well, 100 bits per second." Bai Zhen said, "This is the speed of data transmission."

Wang Ning knew that video transmission was impossible. This speed was too fast for reading novels, let alone pictures. It was like dreaming back to the era of dial-up Internet access.

"AFSK is like this." Bai Zhen said, "If conditions permit, we can switch to the PSK modulation method later, which will be much faster than the current one, but we will make do with it for now."

Faced with a super-low network speed of less than 1kB per second, if they want to transmit images as quickly as possible, they have only one choice, and that is compression.

Crazy compression.

Compress a 10M picture to 1M, and then compress it to 10KB. During the compression process, this picture will lose 99.9999% of its information.

For a 10KB picture, it takes 100 seconds to transmit it through this 725 radio.

Wang Ning and Bai Zhen conducted an experiment to see what the effects would be after image compression and transmission.

Wang Ning took a photo of Lao Bai, a frontal bust, 1.5M in size.

Next, import into PS, first perform proportional compression, and reduce the pixels of a large image to a quarter of its original size. This compresses the size by half. Next, perform chroma sampling to turn a color photo into a black and white photo.

This reduces the image by half, and finally performs quality compression. The operation is as fierce as a tiger, and the compression is one to five at first glance.

Finally, Wang Ning showed the photo

Mom passed by the living room and glanced at it from a distance.
Chapter completed!