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Why is there so much black technology hidden in the iPhone x

IPhone x bangs used to hide so much black Technology

4hw.com.cn: Apple's ultimate pursuit of product design in the era of jobs has been regarded as a textbook for the industry. To the apple under the leadership of cook, the aesthetic deviation has been complained about by the public. IPhone X has been released for a while. This handmade machine with a price of nearly 10000 yuan makes many people crazy. However, many people complain that iPhone x Liu Haiping can't bear it, so ip Why does Hong have a "Qi Liu Hai"? Let's have a look.

We all call the sunken piece at the top of the iPhone x screen "Qi Liu Hai", but Apple has a more official name for it - "original deep camera system". Apple's official explanation: the original deep camera system allows you to take wonderful photos and use the face ID function. The whole system is hidden in a tiny space on the top of the display screen. Although it is small, it lacks all kinds of cutting-edge technologies that we have carefully developed.

Let's take a look at the modules of the original deep camera system. From left to right, they are infrared lens, floodlight sensor, distance sensor, ambient light sensor, speaker, microphone, 7-megapixel camera and lattice projector. Let's analyze one by one.

1. Infrared lens

The first one on the bangs is the infrared lens. This is the module added on the iPhone X this time, which is specially designed for face ID recognition. The infrared lens can capture the lattice pattern on the face in the infrared image to compare with the face data already stored in the secure enclave area of the a11 bionic SOC. If the matching is successful, it will be unlocked.

There is a cold knowledge here. When the face is imaged in infrared, it will look very different from that in real life. Moreover, when the face angle is different from that of the screen, the infrared image is not the same. Therefore, it is not accurate to scan face data directly. We need to use the unchanging lattice pattern on the face, which will be discussed later.

2. Floodlight sensing element

The second component is the floodlight sensor, which sounds like a sensor, so I think the official translation of apple is not very accurate. Its English name is flood illuminator, and its direct translation is' floodlight illuminator '. Its main function is to emit invisible infrared light, so that we can also let the infrared lens capture the lattice of the face smoothly in the dark Pattern.

▲ emitting infrared light

Infrared light, as we all know, is an electromagnetic wave (light) whose wavelength is longer than that of visible light. Its wavelength is between 770 nm and 1 mm, and its spectrum is on the outside of red light. Therefore, the infrared light emitted by the floodlight sensing element is invisible to the naked eye, so there is no sense of light shining on the face, while the infrared lens can capture the infrared light on our face.

▲ spectrogram

So it can be seen here that even at night, when the lights are not on, iPhone x can recognize facial information smoothly. To be more precise, it's not that the lights are not on, but that we can't see the lights when iPhone x is on.

3. Distance sensor

It's needless to say, there are such sensors on the previous iPhone, mainly used to automatically rest the screen when making a phone call and prevent the phone from being awakened by gestures when it's in the pocket

The distance sensor already exists on iPhone

4. Ambient light sensor

We have seen the ambient light sensor on the previous iPhone, through which the iPhone can automatically adjust the brightness according to the ambient light. But this time, the iPhone X has been upgraded on the basis of the previous one, adding the true tone function on the iPad pro. It can not only adjust the brightness according to the ambient light, but also adjust the color temperature to make the eyes feel more comfortable.

▲ true tone Technology

The principle of this technology is to sense the light around the mobile phone through four channels of ambient light. For example, when the indoor light is cold, the screen will also turn cold correspondingly. When the outdoor light is warm, the screen will gradually warm up according to the environmental changes. This process changes more slowly and doesn't make you feel like the screen suddenly turns white or yellow.

5. Loudspeaker

Needless to say, the speakers here are mainly used for earpiece and sound playback. Apple has already placed a speaker in the earpiece on the iPhone 7, so that the iPhone can achieve the effect of stereo speakers. But I think the phone is just listening to the sound. Once the iPhone 6S and previous models accidentally block the bottom speaker with their hands, the iPhone will be "dumb" instantly. The function of dual speakers is worth praising.

▲ dual speakers for the first time on the iPhone 7

6. Microphone

The microphone on the top of the mobile phone is mainly used for noise reduction, which is used to pick up the voice during call and video recording, so as to realize active noise reduction.

7. 7 megapixel camera

Compared with the previous generation, the front camera has not changed a lot in parameters, but this time it has added portrait mode. Yes, not only does the iPhone with dual rear camera support portrait mode, but the front camera of iPhone x also supports portrait mode. There are more ways to play animoji.

▲ portrait mode of iPhone x front camera

8. Lattice projector

Lattice projector is one of the important modules of iPhone x face ID. It can project more than 30000 invisible light points to the naked eye, analyze them, draw accurate and detailed depth map for the face, and process the user's face data in real time through the independent neural engine.

▲ 30000 photoelectricity from lattice projector

The depth map of human face is saved in the secure enclave independent area of a11 bionic processor, and the facial information is stored. How accurate is the depth map? Apple officials claim that the failure rate of face ID is only one in a million, which is much lower than that of fingerprint. In addition, the facial depth map will also be opened to the third-party app to use various AR applications and so on.