Wired broadband?

In addition to transmitting TV signals, can this also transmit network data?

"That's right, cable loan!" Qin Feng nodded, "The cable TV signal line is a cable, which can transmit signals!"

"So you have successfully developed this technology?" asked the director of the TV station.

Lei Jun was about to speak, but was stopped by Qin Feng.

"The technology has been successfully developed, and this technology, at present, we are at the international leading level. Only the United States is better than our technology! The rest of the countries do not have such professional technology! And if we use wired broadband Internet access, our Internet speed will reach the international leading level!" Qin Feng said confidently.

Lei Jun on the side was almost thundered. This technology is still completely in Qin Feng's mouth. Jiang Yong's research and development of this technology is still in a relatively confused state.

Although it is true that wired broadband can be used as network data transmission, there are technical barriers in this regard. This also requires R&D, and the manufacturing and production of related equipment. Especially in terms of technical agreements, this needs to be a breakthrough.

Now there is nothing, Qin Feng boldly patted his chest and promised, what if this can't be done?

"Is that expensive?" asked the director.

"In terms of technology, our company can provide it for free. As for the Internet equipment, it is purchased by Internet users, and it has nothing to do with TV stations. What TV stations need to charge is the relevant network service fee for Internet access!" Qin Feng said, "Moreover, this is not only for colleges and universities, including the whole city, as long as cable TV is installed, you can access the Internet!"

Qin Feng's eyes suddenly lit up. If you get this wired broadband out of your own side, it may be able to greatly improve the domestic Internet process.

After all, today's access to the Internet is limited by telephone lines, which are not only expensive, but also slow. But wired broadband, but high-speed.

At present, the fastest telephone line on the market is 64k, which is already very rare. Most don't do it so fast.

28k and 56k are the majority.

However, there is cable broadband technology, which separates a 6MHz channel from the TV channel between 42MHz~750MHz for downlink data transmission. Generally, the downlink data is modulated in 64QAM (quadrature amplitude modulation), and the maximum rate can reach 27Mbps, and if 256QAM is used, the maximum rate can reach 36Mbps. In order to effectively suppress the accumulation of uplink noise, QPSK modulation is generally used, and QPSK is more suitable for noise environment than 64QAM, but the rate is lower. The uplink rate can reach up to 10 Mbit/s.

This speed is definitely inferior to that of later generations. After all, in later generations, wired broadband Internet access was later abandoned. Because it's too slow.

In later generations, there were 100m fibers, or even 200m. That speed, just now.

But for now, at least for the next ten years, the speed of cable TV Internet access will be enough to meet most needs.

If the whole country uses wired Internet access, then the development of the network will usher in a golden age. China's network environment will usher in its heyday ahead of schedule.

And they will promote the development of Huaxia's network.

If so, then... Qin Feng felt that he would earn incredible wealth.

Although it is said that smartphones have not yet become popular, it is difficult to overcome this in the short term. But all kinds of things on the Internet can be made.

For example, chat tools, video tools, download tools, etc., as well as online shopping, online services, and so on. You can figure it out.

In this regard, you can completely unify yourself. Get it out. At that time, once the smartphone explodes, its own company will rule the whole of China and even the world.

Thinking about it like this, Qin Feng was a spirit.

"How much do you think it's appropriate?" asked the director.

"Well, I think, the initial stage is to seize the market, which can be cheaper. After all, these equipment are a one-time investment, and only proper maintenance is needed in the future. Usually, it mainly consumes electricity. Qin Feng said.

Subsequently, the director asked some more detailed questions. Of course, these details are purely technical and completely untouched.

After all, this director doesn't understand either. I can only ask questions like break-even.

"Okay, if the technology is feasible, then we can work with you!!" The director nodded in agreement.

After all, with the mayor as his companion, as well as the presidents of Tsinghua University, Peking University, and the Conservatory of Music, he would naturally agree.

Especially, that sounds like a good thing. Then of course, there is no problem.

In this case, he would naturally agree.

"Thank you, Director, this cooperation, I believe you will feel fortunate in the future, this is one of the most correct cooperation!" Qin Feng smiled.

"You kid, you're confident. Then we'll see!" laughed the mayor.

Subsequently, Qin Feng and Lei Jun said goodbye to everyone and returned to the company.

"Qin Feng, we haven't skimmed this technique yet, where did you get it!"

"Yes, we have been thinking about this technology for a long time, and we have no clue at all! Where to get it, I don't know!" Jiang Yong also looked distressed.

There are some things that you can't just think about. After all, it's something that comes out of nowhere. How do you get it?

"I know, but the United States has already developed it!" Qin Feng said with a smile, "Time Warner has developed this technology." They used a hardware device called a cable modem to transfer data. ”

cable modem, also known as cable modem. Unlike traditional models, this cable modem combines the functions of a modem, tuner, encryption/decryption device, bridge, network interface card, virtual VLAN proxy, and Ethernet hub. It doesn't require dial-up Internet access, doesn't take up phone lines, and provides a permanent connection that's always online. A VPN (Virtual Private Network) connection is established between the service provider's equipment and the user's modem, providing a standard 10BaseT Ethernet interface to the user's PC device or LAN hub.

"How do you know so well?" the crowd smacked.

"Have you forgotten that I am also a college student in the IT Department of Tsinghua University?" Qin Feng glared, "Besides, I have been to the United States several times. ”

Everyone was stunned.

"But even if we know, we don't understand it! And if we buy this equipment, we may not be able to copy it!" Jiang Yong asked.

"Don't worry. No, it's going to be May Day soon, and I'm going to fly to the United States to visit Time Warner and see if I can introduce this technology!" Qin Feng said, "If you can, then it's easy." ”

"Will they sell it?" Lei Jun frowned.

"Don't worry, as long as there is money to be made, there is nothing that cannot be bought! Besides, I will not pass by as me!" Qin Feng smiled faintly.