Technology Sharing

한어Русский языкEnglishFrançaisIndonesianSanskrit日本語DeutschPortuguêsΕλληνικάespañolItalianoSuomalainenLatina

VR (Virtual Reality) is a technology that uses computer graphics systems and various interface devices such as reality and control to provide an immersive feeling in a three-dimensional environment generated by a computer. Its working principle is to display the left and right eye images interactively on the screen. When using stereo glasses with this type of stereo display mode, the purpose of stereoscopic display can be achieved by using the vertical synchronization signal as the shutter switching synchronization signal. When using other stereo display devices, the left and right eye images (the pictures separated by the vertical synchronization signal) are distributed to the left and right eye display devices.

With the further development of technology, the touch chip is no longer a simple key processing chip, but can now be used as a main MCU. In addition to processing touch keys, it can also process AD sampling, LED control, communication, etc. In the past, two chips were required to realize the touch key function, a touch chip and a main MCU. Now only one touch chip is needed to solve the problem, which greatly reduces the cost of the product and enables more products to use touch key technology.
After the sensing touch chip is integrated into the MCU, the detection of keys has become more flexible, and matrix scanning or AD sampling can be used. This increases the number of keys that can be identified. In the past, several touch chips may have been needed to complete this task, but now a new touch chip can fully meet the requirements.
Capacitive touch chip - GTX301L is a single-channel capacitive touch chip; this chip is designed to replace traditional buttons. It integrates efficient and complete touch detection algorithms inside the chip; built-in voltage regulator circuit provides stable voltage for touch sensing circuit, and the stable touch detection effect can widely meet the needs of different applications.
Capacitive Touch Chip - GTX301L is one of the touch sensor series; can perform capacitive detection with 1 channel under engine operation. Due to the low power engine, various battery-powered applications can increase the use time of the product. Also based on the existing GreenTouch3TM engine technology, reliability can be guaranteed against various noises and environmental changes.
South Korea's GreenChip touch sensor chip continuously scans the input of the sensor button or slider, then runs the upper-level algorithm to detect the status or coordinate position on the slider, and sends the current information to the host through I2C or other communication interfaces. The host controls the display or makes other responses based on the current input information.
Capacitive touch chips integrate high-resolution touch detection modules and dedicated signal processing circuits to ensure that the capacitive touch chip has sensitive automatic recognition and tracking functions for environmental changes. Capacitive touch chips must also meet users' high experience requirements in complex applications in terms of stability, sensitivity, power consumption, response speed, waterproofing, water operation, vibration resistance, and electromagnetic interference resistance. In order to facilitate users to independently control the sensitivity of touch keys in applications, capacitive touch chips also set up sensitivity control bits.
Capacitive touch chip GTX301L features:
1) 1 channel cap, sensor input
2) Embedded GreenTouch3LPTM engine
3) 1:1 direct output
4) Wide supply voltage range: 1.8V ~ 5.5V
5) Package type SOT23-6L (2.92x1.60x1.10, e=0.95) DFN-6L (2.00x2.00x0.75, e=0.65)
6) Passed lead-free certification
7) Analog compensation circuit; embedded digital noise filter
8) Intelligent sensitivity calibration; low power booster
9) Activate low/high function; have switching function