SHD4 H264 low-latency decoding playback board

• COFDM wireless receiving video stream input，H.264 decoding，HDMI、OF、USB/Ethernet output video stream at the same time
• Low-latency H.264 audio and video decoding HD playback board，Maximum support for 1080P@60 real-time decoding
• Ethernet input video stream，H.264 decoding HDMI and AV output
• Received video stream can be stored，Recording files with time information(With RTC function)
• Small size 80.4 * 50.8 mm，User-friendly integration

Function Description：

• SHD4 board realizes H.264 video decompression and playback function，Maximum support for 1080P@60fps decoding and playback，Backward compatible with various other resolutions、Frame rate decoding playback。SHD4 decoding board with H264 encoding board(e.g. SUE1)And the use of COFDM transmitting and receiving modules can realize low-latency high-definition digital wireless image transmission function，In the actual test of 720P@60, the video delay can be about 60ms，1080At P@60, the video delay can reach about 130ms。The delay refers to the delay from HDMI video input at the transmitter to HDMI video output at the receiver，Does not include the latency of the transmitter's front-end camera(We actually measured that the delay of a certain brand of SLR camera is about 70ms、The delay of a well-known brand action camera is about 130ms)；
• Support AES decryption function(Match with transmitter encryption，The password can be set through the configuration panel)；
• Audio and video output interface：
  • HDMI-A port audio and video output(HDMI out)
  • AV audio and video output(6PIN port)
  • USB Host interface output to mobile phone or tablet
  • Ethernet port output
• USB Host interface：
  • External U disk/mobile hard disk storage
  • Stream video to phone/tablet，Simultaneously realize HDMI video display and mobile phone video display
• Parameter configuration serial port(Config UART)：Can be connected to PC or parameter control panel for parameter configuration，It can also be connected to other host computer for parameter configuration(e.g. drone remote control)。Config UART is TTL 3.3v level；
• Transparent data transmission serial port(Data UART)，TTL 3.3V level；
• COFDM transmit interface(For software upgrade and maintenance、video storage, etc.)；
• Docking interface of DR2C dual-antenna COFDM receiving module；
• Keys+LEDs：Can be led out as a power indicator light、RF signal reception indicator、record light、OSD on/off button、Record on/off button；
• Ethernet port：Video input or output interface；
• Power in interface：Support 9~30V power input；
• Dimensions 80.4 x 50.8 mm(COFDM transmit interface)。

SHD4 decoder board application：

1)SHD4 board assembly DR2C dual antenna COFDM receiving demodulation module，Form a complete COFDM receiving and decoding function。：

2)The Config UART interface of the SHD4 board can be connected to an external serial control panel，Make running parameter settings，Such as working frequency band、Configurable convolutional coding ratio、receive password、Setting of system time, etc.。The figure below is a schematic diagram of the serial port control panel SconA connected to the SHD4 board through the 4PIN cable，Powered by the SHD4 board。

3)The SHD4 decoder board can also input H.264 video stream through the network port for decoding and playback output，The software can program the corresponding version of firmware according to user needs。

4)The SHD4 board can transmit the COFDM wireless video stream received by DR2C to PC or NVR equipment through the network port，decode and play。
5)The SHD4 board can receive OSD overlay data through the Data UART interface(Meet the "OSD Overlay Agreement")，And superimpose and display the received OSD overlay data on the video screen in the form of text。