Multi-channel high-definition coded modulation

• Main Authors: HAN FEIHU, ZHOU YIWU, ZHANG JIAYIN
• Format: Patent
• Language: Chinese; English
• Published: 13.11.2020
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PICTORIAL COMMUNICATION, e.g. TELEVISION

The utility model discloses a multi-channel high-definition coded modulator, which comprises a USB interface circuit, a multi-channel HDMI receiving circuit, an SOC circuit, an LCM display circuit, akey circuit, an FPGA circuit, a digital multi-system modulation circuit, an I/Q modulation circuit and a filter amplifier circuit. According to the utility model, multipath HDMI signal input is supported; uSB audio-video signal input is supported; coding, multiplexing, multi-system modulation, I/Q modulation and filtering amplification RF signal output are carried out on the multiple paths of HDMIhigh-definition signals and the USB audio-video signals; a digital television or a digital set-top box can be used for receiving television programs input by multiple paths of HDMI signals and USB audio-video signals. 本实用新型公开了一种多路高清编码调制，包括USB接口电路、多路HDMI接收电路、SOC电路、LCM显示电路、按键电路、FPGA电路、数字多制式调制电路、I/Q调制电路和滤波放大电路。本实用新型支持多路HDMI信号输入；支持USB影音信号输入；将多路HDMI高清信号及USB影音信号进行编码、复用、多制式调制、I/Q调制、滤波放大RF信号输出；用数字电视机或是数字机顶盒可接收到来自多路HDMI信号和USB影音信号输