The development history of micro USB connectors, interested parties can learn about it

1: Development history

In June 2004, including Vodafone Orange、T-Mobile、O2、 Global major mobile network operators such as Telefonica in Spain, Telecom Italia Mobile in Italy, and NTT DoCoMo in Japan, as well as major mobile phone manufacturers such as Nokia, Samsung, Motorola, Sony Ericsson, and LG, have established the Open Mobile Terminal Platform (OMTP) organization. In September 2007, OMTP announced the globally unified mobile phone charger interface standard as Micro USB. The new Micro USB specification supports USB technology on mobile devices such as smartphones and prepares for smaller and more compact portable devices in the future. Mobile phones MP4、 Various portable devices such as digital cameras can be interconnected and communicate without going through a PC. In the future, the mobile phones produced by these manufacturers will strive to adopt the Micro USB standard and become the unified charging interface for future phones. The use of the Micro USB interface allows for charging, audio, and data connections with just one interface.

On the other hand, the achievement of this agreement is actually the result of the EU's advocacy. The EU WEEE department requires handheld device manufacturers to take responsibility for waste and pollution caused by interface differences, and hopes that a unified interface protocol can reduce this waste. The EU suggests that new phones can be packaged without a Micro USB charger, as people already have one. In this way, not only can waste be reduced, but packaging and transportation costs can also be lowered. Furthermore, an interface for charging and data transmission can simplify various operations, which is also a good thing for users.

2: Characteristic advantages

Micro USB connectors are smaller than standard USB and Mini USB connectors, saving space and having a plug and unplug life and strength of up to 10000 times, with a blind plug structure design. The Micro USB standard supports the current OTG function of USB, which allows for direct data transfer between portable devices without a host (such as a personal computer). It is compatible with USB 1.1 (low speed: 1.5Mb/s, full speed: 12Mb/s) and USB 2.0 (high speed: 480Mb/s), and provides data transfer and charging. It is particularly suitable for high-speed (HS) or higher data transfer and is the best choice for connecting small devices such as mobile phones, PDAs, digital cameras, digital camcorders, and portable digital players. At the same time, it can also provide convenience for in car charging by simply using a USB car charger and adding a MICRO USB data cable for emergency phone charging. And on high-end cars, there is a 5V output interface directly connected to a MICRO USB cable to charge the phone. MICRO USB has wide versatility and is suitable for convenience.