On October 15, the vivo X200 series of mobile phones was officially released last night. The new series includes the X200 standard version, X200 Pro, and X200 Pro mini.
Goodix Technology issued a statement last night to "claim" the sensor accessories of the vivo X200 series of mobile phones, including: smart audio amplifier/smart audio software, under-screen light sensor, touch screen control chip, ultrasonic/under-screen optical fingerprint.
The vivo X200 Pro mobile phone adopts Goodix's ultrasonic fingerprint solution and introduces the industry's first ultrasonic fingerprint "slide entry" function. It is reported that based on Goodix's image algorithm technology, users can enter fingerprints by moving their fingers in circles in the fingerprint area.
The vivo X200 series mobile phones are equipped with Goodix's new generation of under-screen light sensors, which adopt a 2.5D stacked design and support the "three-in-one" functions of ambient light, color temperature measurement and proximity sensing. The solution also has highly sensitive infrared sensing capabilities, and a laser transmitter can realize under-screen proximity sensing; through its short exposure characteristics, it can reduce the interference of screen self-luminescence on ambient light measurement.
The touch chip of the X200 series mobile phone is optimized for wet hands, games and other scenes, and is adapted to wet hand control and multi-finger control accuracy; the new phone also uses Goodix smart audio amplifier and audio software solutions, with built-in AI algorithm software, which can reduce environmental noise in real time.
Application of sensors on mobile phones
Sensor chips are widely used in mobile phones, mainly including the following aspects:
Light sensor: senses the intensity of ambient light and is used to adjust the brightness of the mobile phone screen. It can also be used to adjust the automatic white balance when taking pictures, and assist in adjusting the screen brightness.
Distance sensor: uses infrared LED lights to emit infrared rays, which are reflected by objects, and the infrared detector measures the distance by the intensity of the received infrared rays. It can be used to detect whether the phone is attached to the ear to automatically turn off the screen to save power, and can also be used to automatically unlock and lock the screen in leather case and pocket mode.
Gravity sensor: can calculate the current direction and horizontal position of the phone, so as to switch between horizontal and vertical screens.
Acceleration sensor: mainly measures some instantaneous acceleration or deceleration actions, such as step counting, measuring the movement speed of the phone, and triggering special instructions in games.
Magnetic field sensor: uses magnetic resistance to measure the plane magnetic field, thereby detecting the magnetic field strength and direction position. It is generally used in compasses or map navigation to help mobile phone users achieve accurate positioning.
Gyroscope sensor: can track displacement changes in multiple directions, and is used in shooting or racing games, 3D photography and panoramic navigation.
GPS module: The main function is to receive satellite coordinate information through the antenna to locate the user. It can be used in scenarios such as maps, navigation, speed measurement and distance measurement.
Fingerprint sensor: used to automatically collect user fingerprints to achieve the purpose of protecting privacy. Today's fingerprint sensors are combined with mobile payments and can be used for device unlocking and payment verification.
Pressure sensor: can sense pressure signals and convert them into usable electrical signal output. It can calculate altitude, assist navigation, measure the number of floors or be used for indoor positioning.
In addition, temperature sensors, ultraviolet sensors, heart rate sensors, blood oxygen sensors, etc. are also used on mobile phones. These special sensors give smartphones more functions and application scenarios.
Common sensors with special functions on mobile phones include:
Color temperature sensor: Determines color temperature, which is helpful for white balance calculation and color cast processing when taking photos.
Hall sensor: Induces magnetic field strength to obtain direction and elevation information, which can be used for electronic compass, etc.
Air pressure sensor: Detects changes in air pressure, which helps improve the accuracy of mobile phone GPS.
Fingerprint sensor: Can automatically collect fingerprint information for device unlocking and payment verification, etc.
Distance sensor: Transmits infrared laser and receives reflected light, calculates the distance between the lens and the object, and realizes autofocus.
Heart rate sensor: Monitors the user's heart rate, usually used for health monitoring functions.
Blood oxygen sensor: Detects the user's blood oxygen saturation, which is used to assess the user's health status.
These sensors make mobile phones more functional and intelligent, and improve the user experience.
This paper is from Ulink Media, Shenzhen, China, the organizer of IOTE EXPO (IoT Expo in China)
