Li Xuan picked up his mobile phone and called his assistant back. Before, Li Xuan put Guan Zhilin aside to dry for several days. And Guan Zhilin noticed that Li Xuan deliberately ignored her, so she obediently returned to the set to film the next day, and didn't dare to make any more moths.

And in the past few days, Guan Zhilin has to make several phone calls to Li Xuan's office every day. Because she had not been able to talk to Li Xuan, she finally made up her mind and went to the Central headquarters of Dongfang Electronics Company to meet Li Xuan. Fortunately, this Guan Meiren did not go directly to the building to block Li Xuan, but found a café nearby, and then kept calling to ask for a meeting.

And Li Xuan happened to be out of the office today, so Chrillen was tragic. received a call from the boss's Xiaomi, and he could only reply softly that the boss was not there. But Guan Zhilin was rejected by Ke Lilun for several days before, thinking that he was shirking himself again. So, Guan Zhilin persevered and kept calling over and over again, and finally in the end, Ke Lilun couldn't hold it anymore and could only ask his boss for help.

"If she calls again, you will say that I will let her film obediently, and I will naturally go to see her when I am free!" Li Xuan hung up the phone, and a smile appeared on the corner of his mouth.

Guan Zhilin is not stupid, she obviously knows Li Xuan's character. If she dares to go directly to Li Xuan's office to block people, it is estimated that tomorrow Hong Kong's newspapers will be drowned by Li Xuan's scandal. If that was the case, Li Xuan would not hesitate to kick her away. But now, Li Xuan is willing to continue to play a training game, after all, Guan Zhilin is also a big beauty in Hong Kong.

Of course, these are just some of the small pleasures in the colorful life of Li Shoufu, and his focus is still on his career. Because if there is no huge wealth brought by his career, it is naturally impossible for all kinds of beauties such as Guan Meiren and Limei to bow down to him and obey him.

Li Xuan was not in a hurry to hand the brick-like mobile phone in his hand to the assistant beside him. Instead, continue to play with it in your hand. This is the Dynatac 8000X portable mobile phone that Motorola just launched last year, and is known as the originator of modern mobile phones.

Its portability is reflected in the total length of the fuselage not exceeding 20 cm. The total weight of the telephone is only 2 pounds (900 grams). Perhaps for mobile phone users thirty years from now, this backwardness will long ago need to be swept into the trash. But in 1983 it was an epoch-making product, which meant that human communication began to enter a new era.

Hong Kong is one of the first regions in the world to build a mobile communications network, and the Hong Kong Telephone Company, which Li Xuan is preparing to acquire, obtained the exclusive right to operate mobile communications from the Hong Kong government as early as last year, and has built a complete mobile communications system with signals covering the entire urban area of Hong Kong.

This is also one of the important reasons why Li Xuan is happy to acquire Hong Kong Telephone Company. Dongfang Electronics Company, which is interested in entering the field of communications, especially in the field of mobile communications in the future, needs a terminal telecom operator to implement and promote its own products.

The history of mobile phones can be traced back to 1940, when Galvin's engineers developed them for the U.S. Army. SCR536 portable FM wireless walkie-talkie. That's right, the principle of the first generation of analog mobile phones, to put it bluntly, is to convert the voice communication guò chip into FM radio and send it out. Therefore, the secrecy of the analog mobile phone is actually very poor, and the signal sent by the mobile phone can be received by the FM radio, and it is not difficult to crack.

In the sixties and seventies, the market for mobile phones in the United States expanded rapidly under the huge demand of police, taxi drivers and other industries. In 1973, Martin Cooper, a senior engineer at Motorola, developed a prototype mobile phone based on a cellular mobile phone based on the in-vehicle mobile phone. That is, the predecessor of the Dynatac 8000X.

However, it took Motorola nearly 10 years and hundreds of millions of dollars in R&D to finally make a major breakthrough in portability and low energy consumption, and successfully commercialized. After the dynatac 8000x phone is loaded with a battery. It can only last for half an hour. This is simply weak compared to a domestic brand that charges for five minutes and talks for two hours in later generations. However, the analog phone is priced at $3,995 in the United States and HK$30,000 in Hong Kong, but it is still highly sought after by high-end people.

It was from this that Motorola began to dominate the entire 1G era. Until the 90s, after the curtain of the 2G era kicked off, Motorola was due to its own mistakes. It gradually lost its leading position in the field of mobile phones. In the later 3G era, Motorola withdrew from the ranks of mainstream competition. This history of decay has made countless people sigh.

But 30 years later, Motorola is now entering the most glorious stage of the company. In fact, as early as two years ago, under the instruction of Li Xuan, the Oriental Research Institute began to vigorously enter the research and development of mobile phones, but now there is still some time before coming up with mature works.

And even Li Xuan himself is not confident that he can surpass Motorola in the analog era. The most important wireless transceiver module (antenna part) and audio input and output module (headphone speaker part) in analog mobile phones belong to analog circuits.

Don't look at the Oriental Research Institute, which has successively developed the ERM architecture and MIPS architecture that shocked the entire semiconductor industry. However, the Oriental Research Institute can only dominate in the field of digital chips at most, if it is not because of the acquisition of Fairchild, the foundation of Dongfang Electronics in the field of analog chips is almost zero.

The field of analog chips is the field that needs to be accumulated the most. With the increasing maturity of CAD (computer-aided design) software in recent years, the work of digital chip designers has begun to become easier. Many module design tasks can be replaced by a computer by simply entering parameters in specialized software. With the help of computers, designers can challenge more complex and high-performance chip design solutions.

However, in the field of analog chips, even after 30 years, most of the design and testing work still requires designers to do it themselves. For example, digital chips don't need to consider the layout of components at all, but analog chips don't. Especially like the power amplifier chip chip chip in the speaker, the different positions of resistance and capacitor bring completely different noise interference and distortion interference, which requires designers to obtain the best solution after countless tests.

We often hear how many transistors are integrated into a chip. The greater the number of integrated transistors, the more powerful the chip, and the number of fifth-generation Core integrated transistors has reached 1.9 billion.

And human energy is limited. The purely manual design also limits the impossibility of infinite complexity of analog chips. The kind of circuit with an integration of hundreds of millions of transistors cannot be completely designed by hand one by one. And the degree of integration is limited. This, in turn, can greatly limit the designer's thinking. For example, in analog chip design, designers will try to avoid designing large-capacity capacitors and high-resistance resistors to improve the integration of chips.

These difficulties and limitations make the design of analog chips often take time to accumulate. Take audiophile-grade audio as an example, where digital equipment such as players are of similar standard to each manufacturer. However, in terms of the quality of analog equipment such as speakers, world-class companies such as Sony and Pioneer in Japan have not been able to make high-quality speakers like Harmankardon and Infinity in the United States. The reason is that the power amplifier chips developed by Sony and other companies cannot reach those old factories in the United States with decades or even hundreds of years of history.

And the same. Motorola's advantage in the field of analog mobile phones is simply beyond the reach of other companies. In fact, until the 2G era, Motorola's ability to take over signals and call voice fidelity is also a leader among the world's major mobile phone manufacturers. And this module is precisely the use of analog chips.

Galvin, which previously developed walkie-talkies for the U.S. military before World War II, was renamed in 1947, and its new name was Motorola. It can be said that from walkie-talkies in 1940, to car mobile phones, and then to portable mobile phones, Motorola's technology monopoly is almost the same.

In fact, in the first generation of mobile communication standards, Motorola did not take much advantage. The world's first commercial cellular network was built in Tokyo in 1979 by a Japanese company (Nippon Telegraph and Telephone Corporation). Afterwards. Ericsson and Nokia in Northern Europe have jointly developed the NMT-450 analog communication system. Since 1981, the NMT-450 system has been put into commercial operation in Finland, Sweden and other Nordic countries.

In the U.S. market, Bell Yàn submitted a proposal for cellular mobile services to the FCC (Federal Communications Commission) as early as the end of 1971. In 1978, the first pilot network was successfully built in Chicago. Last year, the mature AMPS system developed by the Bell Yàn Room was officially approved by the FCC, and the construction of a commercial basic signal network began in the United States.

And Motorola itself is developing the TACS standard. It's not really mature yet. However, Motorola failed to take the lead in the field of communication equipment, and relied on the Dynatac 8000X mobile phone to successfully pull back the game.

Compared to Ericsson, Nokia, Motorola and other giants in the field of communication. Dongfang Electronics' layout in the field of communications has just begun. The previous DS-2000 digital program-controlled telephone exchange can only be regarded as a test of the waters.

In the field of mobile communications, Li Xuan has already focused on the next generation of communication standards. For example, TDMA and CDMA technologies.

The Chinese translation of the former is called time division multiple access technology, and GPRS in the 2G era is based on TDMA technology. In the era of 1G simulation, every mobile phone needs to occupy a channel when making a call. However, there are restrictions on the frequency bands allocated to the field of mobile communications in each country, such as 824-894MHz allocated by the FCC in the United States. Therefore, in a limited frequency band, the channels that can be divided are also limited, which limits the total number of users that the system can carry.

In fact, when people are on a call, the intermittent time between voices is actually very long. As long as the voice coding is done reasonably, it is completely possible for several users to share a channel. TDMA technology is based on this principle, a channel is evenly distributed to 8 or even 16 users at the same time, which greatly improves the number of users that the system can carry.

As for the more advanced CDMA technology, its large-scale application did not really explode until the 3G era. Qualcomm built a huge wall almost outside the CDMA's patent pool, so much so that all Chinese mobile phone manufacturers in later generations were ruthlessly exploited by it, and finally attracted the National Development and Reform Commission to make an anti-monopoly move.

Although Li Xuan doesn't know much about the specific technology, he gives the general principle, which is enough for professional technicians to see the direction of research and development. It is believed that after about five to eight years of accumulation, when the second generation of mobile communication standards officially comes out, Dongfang Electronics should already have enough patents in its hands to make it the maker of the rules of the game.

Li Xuan's current layout in the field of mobile communications, in addition to basic communication patents, also includes DSP (digital signal processor) chips. In the era of digital mobile phones, every mobile phone needs a DSP chip, which is also one of the largest types of digital chip market.

But now, the reason why Li Xuan is in a hurry to buy the Hong Kong Telephone Company is because the Oriental Research Institute has just developed a new gadget - IC card. To put it bluntly, an IC card is a plastic card with an integrated circuit chip inside. In later generations, IC cards were widely used, such as bus cards, social security cards, medical insurance cards, bank cards, and meal cards in university canteens. In the early days of the construction of Huahong NEC, the earliest wafer factory in China, it relied on the state's social security card orders to support it.

In fact, as early as 1969, the Japanese Kunitaka Mura proposed a method for manufacturing a safe and reliable credit card, and obtained a patent in 1980. He named his own card ID card, in fact, the ID card already has the technical prototype of the IC card, and in the 21st century, the original magnetic card bank card, credit card, is really as Mura Kunitaka envisioned a few decades ago, replaced by a more secure IC card.

The world's first IC card was developed by the Boolean company as early as 1976, but its specific application has not made much progress. Boolean has been lobbying France's Directorate-General of Posts and Telecommunications for the use of calling cards.

The Oriental Research Institute's idea this time is exactly the same as that of Boolean, and it also hopes to apply IC cards to calling cards. The Hong Kong Telephone Company has the exclusive right to call all local telephones in Hong Kong, and the basic telephone communication facilities in Hong Kong are invested by the Hong Kong telephone company. Another Hong Kong Dadong Telegraph Office is basically only responsible for the investment of cross-border lines, and most of the user tariffs are settled by the Hong Kong telephone company.

If Li Xuan can buy the Hong Kong telephone company, and it can apply to the Hong Kong government to promote the use of IC phone cards to replace the current magnetic card calling cards, it will be much easier than the French Bull company. Once the IC calling card is successful in Hong Kong, Dongfang Electronics can quickly use it as an example to promote it to other markets around the world. (To be continued......)