Super Copy of Great Power Technology

Chapter 164 Mobile Phone Prototype (Part [-])

In order to find a high-quality camera, colleagues in the R&D department consulted almost all camera suppliers at home and abroad, obtained dozens of mobile phone camera samples for testing, and finally chose this cosm camera produced by the island country SONY.

In terms of camera parameters alone, this camera is not the highest, but the actual shooting effect is the best. Although the purchase price of this camera is much higher than that of domestic cameras, in order for users to have better shooting effects, they finally chose it.

The appearance of the mobile phone is just like this. It is incomparable with the appearance of the flagship mobile phones of later generations, but in the current stage of smartphones just starting out, this appearance is already very impressive. At least in Qiao Ruida's opinion, it looks better than the iPhone 4 mobile phone launched by Apple last year. According to the original plan, the first generation of Ruida smartphones also had fingerprint recognition capabilities. However, the problem of miniaturization of the fingerprint module has not been solved, and it can only be put into the next generation of mobile phones.

Next, it was a power-on test. Qiao Ruida pressed the power-on button of the phone with her finger. After a few seconds, the screen lit up, and after a brief cutscene, the Android system unlocking page was entered. Since it is a test prototype, there is no password designed. You can unlock it by swiping your finger directly.

After the phone is unlocked, the screen displays a classic interface of the early Android system. The top is the signal bar, which displays Bluetooth, wireless, mobile signal conditions and battery information. The upper middle part is the time and date, and there are two rows of eight applications in the middle. Icons include photo, album, browser, settings, etc. At the bottom are three icons: phone, address book, and text message.

Qiao Ruida tried to operate it, and it was easy to slide. Although the animation was relatively simple, it was very smooth. When opening the app, there was no lag. He tested two more game programs installed on the phone, one was the Windows classic game Magic Pinball, and the other was Plants vs. Zombies. The first game was fine, there was basically no lag, but it was not the same when playing the second game. lags and frame drops were frequent, especially in the later stages when zombies appeared in large groups and too many plants were planted. , the frame rate dropped directly to a dozen frames, which was simply unplayable.

After playing GAME OVER twice in a row, Qiao Ruida frowned, "Have you tested this Plants vs. Zombies game? Why is it so laggy?"

Jamel Xiao shrugged helplessly, spread his hands, and said: "We have tested some software and games on the mobile phone, and there are no big problems with the others. There are indeed some lags in the game, but this is not our problem, but Qualcomm’s fault is that the main control chip performance is not enough and the memory is only 2G. It is good that Plants vs. Zombies can run like this. And during the test, we also found a problem, that is, the power consumption of this Snapdragon S3MSM8260 chip It’s very high and generates a lot of heat. As long as the game is played for a long time, the fuselage will often dry out to over 50 degrees, and then the frequency will be reduced and the frame will be locked, and the game will freeze into a slideshow.”

The game was too laggy again. Qiao Ruida shook his head speechlessly and quit the game. He tried touching the back panel area of ​​the phone where the chip was located, and it turned out to be a bit hot. "This won't work. The chip is too hot. If it overheats and burns out, it will be troublesome. There are some restrictions on scheduling. The chip temperature is limited to 49 degrees. If it exceeds this degree, the frequency will be reduced and the frame rate will be locked. In addition, inside the back panel of the mobile phone, Adding a layer of copper vapor chambers to spread the heat throughout the fuselage, I think would solve some of the problem.”

Hearing Qiao Ruida's suggestions for solving the overheating of the chip, Jamel Xiao quickly took out his notebook and recorded these, "Well, I understand, and I will make changes later. In fact, I think the fundamental problem still lies in the chip manufacturing process. , 40nm chips are still too reluctant to be used in mobile phones.”

Qiao Ruida nodded in agreement and said: "I also know that the performance of this Snapdragon S3MSM8260 chip is limited and the power consumption is too high, but there is only one main control chip for smartphones on the market. Who else can use it without it? This year Let's just use it for now. After this first-generation Reda mobile phone is finalized and mass-produced, I will lead you to develop our own mobile phone SOC, using the most advanced 28nm process technology, and then we will be able to solve the root cause of body overheating. It’s a problem.”   “As far as I know, the main control chip of a mobile phone is very complex, with billions of transistors at every turn, second only to the computer CPU, and the power supply chip is not at the same level as the charging chips we developed previously. Can we, No. [-], really develop something like this?"

In the past three months, Qiao Ruida has led colleagues in the R&D department to complete the research and development of more than a dozen mobile phone chips, including fast charging chips, power management chips, and touch chips. This smartphone prototype now uses a lot of self-developed chips. However, the research and development of mobile phone main control chips is more than ten times more difficult than the above-mentioned chips. It is no wonder that Xiao Jingsheng, a returned doctor from overseas, is not sure.

"It depends on people. According to the information I have learned, the Snapdragon chip we are using now and the A8 chip used in Apple mobile phones are all based on the ARM architecture. Our company can also find ARM companies to purchase ARM architecture licenses. , on this basis, we will develop our own mobile phone main control chip."

With the help of golden fingers, Qiao Ruida can refer to the existing mobile phone SOC chip design and develop its own mobile phone main control chip. It is only a matter of time.

Next, Qiao Ruida conducted music playback tests, video decoding tests, background retention tests, mobile phone battery life tests, and charging power tests. By the time all tests were completed, it was already two hours later. During the test, Qiao Ruida discovered more than a dozen minor problems, including a phone freeze and a system crash. Jamming Xiao recorded these problems one by one and waited for subsequent modifications and optimizations.

After the test was completed, Qiao Ruida nodded with satisfaction and said: "There are no big problems with the hardware of this phone. As long as the heat dissipation is solved, it can be finalized and put into mass production. In terms of system and software, there are still many problems." There is a lot of room for optimization, you should conduct more tests and try to solve all the bugs before release."

Jamel Xiao put away his notebook and said: "Boss, I heard that you have set up an electronics factory when you go home this time. Can you OEM to produce our mobile phones?"

"There is no problem in producing mobile phones, but the initial production capacity is limited and we can only take on some mobile phone orders. We still have to go to the south and find a reliable electronics factory to OEM our mobile phone."

(End of this chapter)