What Is Wireless Screen Mirroring? Understand Google Cast, AirPlay, and Multi-Screen Interaction Technologies in One Article

Amid the digital wave, wireless screen mirroring has become infrastructure for smart classrooms and modern offices. But do you truly understand the technical principles behind it? This article will help you gain a comprehensive understanding of this technology.

1. Core Analysis of Wireless Screen Mirroring Technology

Wireless screen mirroring refers to a technology that realizes real-time synchronization or casting of screen content from devices like mobile phones and computers to large screens (such as TVs and projectors) via a wireless network. It completely frees users from the constraints of cables.

2. In-Depth Comparison of Mainstream Screen Mirroring Protocols

Google Cast Protocol

  • Features: Launched by Google, it is commonly used in Android devices and Chromecast. It turns the mobile phone into a “remote control,” while the receiving device fetches content directly from the network.
  • Advantages: The mobile phone screen can be turned off during playback. It offers stable performance and saves power, making it ideal for video casting.

AirPlay Protocol

  • Features: An exclusive technology for Apple’s ecosystem, it provides a seamless screen mirroring experience for iPhone, iPad, and Mac users.
  • Advantages: Delivers smooth performance and extremely low latency when connecting Apple devices.

Miracast Protocol

  • Features: A universal industry standard based on Wi-Fi Direct, it enables complete screen mirroring (real-time synchronization of the entire screen).
  • Advantages: Widely supported by Android and Windows devices, serving as a universal solution for computer screen mirroring.

3. Scenario-Specific Applications of Multi-Screen Interaction Technology

  • In smart classrooms: Supports real-time screen sharing between teachers and students, enables group discussions, and builds student-centered interactive classes.
  • In wireless meetings: Allows multiple people to mirror screens simultaneously, promotes team collaboration, and improves meeting efficiency.
Understanding the differences between different protocols helps you choose the most suitable wireless screen mirroring method for different scenarios, fully unlocking the value of multi-screen interaction.