The MP3 war that began in 1998 has never stopped since the beginning, but Hu Yiting's choice of this Philips SAA7750/7751 decoding chip has been leading the way since it came out, starting from 03 years, it has occupied the largest market share of high-end MP3 decoding chips for seven or eight years, and the wholesale price was sold for more than 200 yuan until 08 years! Even Nike chose to use this chip to produce its own brand of epitaxial products to match the high-end image of its own products.

Of course, there are still many choices for MP3 decoding chips, even Philips has launched more advanced products after SAA7750/7751, but another important reason why Hu Yiting currently chooses SAA7750/7751 is that these two chips use 0.8 micron process, which is really a tailor-made solution for the current process level in China.

Hu Yiting first copied SAA7750 this product, and prepared to launch the cheaper SAA7751 as a successor product.

SAA7750 was also famous because it was the only MP3 decoding chip that supported direct CD recording at that time.

The MP3 player with the SAA7750 can be easily connected with the CD player through an audio cable! So as to transcode the CD directly into MP3, the practicality of the function naturally needless to say, with it, it is equivalent to the user can convert all the CDs in their hands into MP3 format, without the help of a computer, if the MP3 player is connected to the computer through USB, you can continuously copy the MP3 you picked from the CD to the hard disk.

And the SAA7750's transcoding quality has always been well-known, and it is the best effect among all chips with CD direct recording function, which is of course due to its excellent transcoding algorithm, this powerful computing performance comes from its built-in ARM-V4 processing core, and this is exactly the problem that Hu Yiting just solved not long ago.

This powerful computing performance also enables the chip to support voice input and transcoding into ADPCM format audio files, so that MP3 players can be used as voice recorders.

As for displaying song titles and song information, this is not a problem for the powerful processing core embedded in it, and it also allows it to run the built-in music equalizer with ease.

To sum up, in other words SAA7750 it can not only play MP3, but also rip CD audio tracks and transcode them into MP3 format for storage, and even record them! After combining these three functions, it is no wonder that it has become the chip of choice for high-end MP3 players.

Moreover, the signal-to-noise ratio of the SAA7750 is as high as 90db, compared to the 70db of the MPman-F10 of Shihan, which is an overwhelming victory, and its output sound quality is recognized as the top MP3 level in the industry at that time, and this stems from Philips's years of skill in DSP digital signal processing technology, after all, Philips is one of the earliest manufacturers to produce CD record players, and it is easy to convert between digital audio and analog audio.

The SAA7751 is a castrated version of the SAA7750, with only DSP cores and flash memory inside, and is intended for desktop CD player manufacturers to upgrade their products, enabling CD players to play MP3s on discs.

In addition, Philips also has SAA7752 and SAA7753, these two castrations are more powerful than 7751, and the flash memory is directly castrated, the purpose is to provide portable portable CD player manufacturers with upgrades to play MP3 functions.

Hu Yiting believes that after mastering the SAA775X series, Chongguang will have the ability to officially enter the field of music playback, and gain a firm foothold in this highly competitive industry, competing with Japanese and Korean manufacturers.

After confirming it twice, Hu Yiting transmitted the SAA7750 design to the server, set the password, opened the mailbox and sent a group email to the company's multimedia technology development team, asking them to start researching the design of this chip.

According to his assumption, the next three successor chips of SAA7751/7752/7753 can be handed over to the multimedia technology development team led by Wu Shihuan for practice, after all, he has gnawed the hard bones, the next work is not difficult, it is enough to give a rough framework by himself, and let Wu Shihuan toss the rest of the work.

opened a can of Coke and slowly squinted in the office, and suddenly Wang Lili pushed open the glass door and went straight in.

The US Congress has just passed a resolution claiming that our Youying Overlord coprocessor poses a threat to US information security and requires us to fully cooperate with the US Government in conducting a technical security review!"

Hu Yiting's heart twitched suddenly, feeling that what should have come in the dark was still coming, he couldn't dodge this knife after all, he was thinking about countermeasures with thick eyebrows, and he heard Wang Lili continue: "In addition, the Federal Communications Commission of the United States Congress has just issued an announcement at the same time, accusing our QQ of being suspected of stealing the information of American citizens, and there may be information security risks and vulnerabilities, which have posed a threat to the security of the US network communications, and require us to cooperate with the Federal Communications Security Commission in the next investigation!"

Hu Yiting felt uncomfortable, and he couldn't drink the coke anymore, so he had to sit in the office chair without saying a word, and his brain was quickly turning his mind, but he couldn't figure out why.

Wang Lili reminded: "Hu Yiting, I think this is a big deal, we need to send people to the United States immediately and fully cooperate with the US government in the investigation, otherwise we will not be able to eat this time." ”

Hu Yiting woke up suddenly: "Yes, you must cooperate, you can't be caught by the Americans by the pigtails, you can organize people now, prepare all the research materials we have on the Youying Overlord coprocessor, and QQ, except for the source code, all other development files must be sorted out!"

Wang Lili said in a solemn tone: "Mr. Hu, this matter is too big, I think I must ask for help from the superior unit." ”

"That's right!" Hu Yiting clapped his hands and jumped up: "In the liaison department, I want to see Minister Hu! There is also the Government Affairs Yuan, it is best to meet Master Li!"

Just when Chongguang was in a mess of porridge here, and the senior management was anxious like ants on a hot pot, news came from the president's office that Wu Hengyuan received a notice from the ministry asking Chongguang to send three to five representatives to Nanhai Park for a meeting at seven o'clock in the evening.

After getting this news, Hu Yiting felt a little at ease.

After just getting the news, he was really flustered for a long time, and he was extremely depressed in the afternoon, after all, the United States is currently one of the main markets for Chongguang's products, and even the most important market, Chongguang's current CUP plan almost completely relies on cooperation with Cyrix to achieve, once the Youying Overlord coprocessor is blocked by the United States, will it be the turn to sign the CPU of the multimedia instruction set of Youying Overlord next?

QQ, as the crowbar of the heavy light Internet strategy, is the most important software platform, and it has just made a profit at the moment, and the future is infinitely bright.

As the world's largest hegemonic country, the importance of the U.S. market is self-evident, and the attitude of the U.S. government is like a mixture of police and judge for a Chinese company in these years.

Hu Yiting hurriedly ordered and notified Kang Yaoxiang, Xiaoma, Wang Lili, and Wu Hengyuan, and gathered five people to conduct emergency consultations before going to Nanhai Park.