[Huawei Developers] John Wo:
More information about this, you can visit HUAWEI Developer Forum.​

Smartphones have become the single most important smart device in the digital age, thanks to a full-fledged mobile device and communications ecosystem. However, most people will opt to switch to a larger screen device for full-scale immersion, when watching a movie or gaming. Marrying smartphone functionality with the benefits of a large-screen device, allows for the content on a smartphone to be projected on to an expansive display, offering a new paradigm for entertainment, as well as remote work and learning.

As a core distributed technology in Huawei's EMUI system, HUAWEI Cast+ Kit incorporates the strengths of both large and smaller screen devices, and seamlessly bridges the divide between the two systems, facilitating effortless cross-device transfers of media content.

Ultra low latency

Revolutionizing the game projection experience

Projecting games with HUAWEI Cast+ Kit ensures that the projected content on the TV is in sync with the action on your phone, with projection latency as low as 50 ms. This provides for a whole new realm of fully-immersive gaming.

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Proprietary streamlined communications mechanism

Resolving the trade-off between smoothness and clarity

During projection, the Wi-Fi environment is prone to interference and instability due to the potentially high number of devices connected to the same network. Due to this and the resulting packet loss, frame freezing and artifacts will tend to occur. The common resolution for most brands is to sacrifice smoothness for clarity, or vice versa. But now it's possible to enjoy the best of both worlds: high quality imagery with a smooth display.

HUAWEI Cast+ Kit is the culmination of three years of optimization and iteration, and is based on Huawei's own streaming media communication and transmission protocols. It redesigns the algorithm at the streaming media transmission layer to ensure strong anti-interference capabilities. Even when the packet loss rate reaches 25%, HUAWEI Cast+ Kit still manages to minimize frame freezing and ensure stable data transmission. This ensures a high degree of smoothness and high definition streaming, throughout the entire projection process. Because the optimization is performed at the software layer only, no additional cost is passed on at the hardware layer to device partners.

High-definition mirroring

Reproducing the magnificent graphical performance on your phone

The 1080p HD mirroring provided by HUAWEI Cast+ Kit allows for lossless reproduction of pictures and videos on your phone.

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Streamlined connection

Easy, instantaneous projections, on command

HUAWEI Cast+ Kit can be accessed on a Huawei phone, without the need to download and install an additional app. By swiping down the notification panel and touching the Wireless Projection shortcut switch, your phone will automatically search for nearby devices that can be projected to. To project the phone screen, just select the target device. The process is so simple that even technologically-challenged users can perform it with ease. HUAWEI Cast+ Kit comes equipped with a fast discovery mechanism that is based on Huawei-developed algorithms. The minimal time required to establish an end-to-end connection is a staggering 500 ms. HUAWEI Cast+ Kit is a highly-accessible wireless projection solution that is not weighed down by unnecessary bells and whistles, for direct touch-to-connect and casting.

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PIN authentication

Secure and convenient

When using the Huawei Cast+ function on a TV for the first time, the user will need to enter the PIN to authenticate the connection. All subsequent connections will not require PIN input. This solution provides for optimal user privacy and security, without compromising convenience in the slightest.

HUAWEI Cast+ Kit is only supported on devices that run EMUI 10.1 or later. EMUI 10.1 debuted on the HUAWEI P40 series of smartphones, which were released on April 8, 2020 in China, and will be made available on a gradual basis, on other phone models. HUAWEI Cast+ Kit is poised to reinvent the nature of cross-device interaction, with Huawei's broad user base, and collaborative capabilities of third-party partners.

For more details about Cast+ Kit development, including a service overview, development guide, access preparation, and access to the SDK, please click the link below:

https://developer.huawei.com/consumer/en/cast-kit/