Knowledge about miracast HDCP

Source: Internet
Author: User

Miracast

The video data processing process in the communication architecture. The entire video data processing and transmission process is divided into several stages. At the beginning, the captured images and sounds are compressed, the compressed audio and video data is converted into the basic package Streaming Format (packetized elementary stream, PES). If HDCP is applied, relevant information will be added, and then in the form of MPEG2-TS audio and video data fusion (MUX), followed by RTP Header (header), and finally through UDP/IP transmission. At the receiving end, the data is displayed after reverse encapsulation, division of labor (Demux), HDCP decryption and decompression.

Forum:
It should be confirmed that the box does not support HDCP (even though HDCP screen is supported)
Therefore, when the phone plane appears, it cannot be displayed (only the desktop, audio, and video of the phone can be displayed)
I have used many phones, including LG pro, HTC new one, and butterfly.
Samsung S3, note2, although it has already been released, but it has never been found
After reading it online, Sony and Samsung need to support the HDCP box.

 

HDCP
The hdmi hdcp at the output end of box, And HDCP encryption protects the output content. Generally, the chip manufacturer needs to do HDCP protection for the HDMI output, which requires payment.
At the Box receiving end, the HDCP decrypts and decrypts the received content, such as the HDCP encrypted content of the mobile phone and pad, for decryption and playback. For example, data sent by Samsung and Sony mobile phones
HDCP encryption is added, so the box must have HDCP decryption before playback.


After upgrading Ios to 7.02, Apple made some adjustments to the airplay protocol, letv needs to adapt to the IOS7-airplay, is solving this problem, thank you!

 

Refer:
Miracast Baidu encyclopedia
Http://baike.baidu.com/link? Url = naqAbJXtCM7CEJNUQteTkL5q-K1HwhZLowhH2iUH3nMdTQ4LjPq-TK_Y_UFD5rwVME5f1zxEgo1WOIGxfHoEpq

HDCP encryption protocol for HDMI
Http://blog.chinaunix.net/uid-9688646-id-3407126.html

Introduction to airplay, dlna, and miracast wireless technologies
Http://www.cnblogs.com/lijunamneg/p/3256722.html
 

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