NTSC FPV Video Scrambler Transmitter Receiver Decryption Encryption Module

FPV Video Scrambler Transmitter Scrambling Encryption Receiver Descrambling Decryption

Key Features:

• CVBS video stream encryption and decryption module, paired for use,one adds at the FPV transmitter, another one adds at the video receiver;
• FPGA digital encryption and decryption processing, high-strength 32-bit password(up to 232);
• Only increased video latency within 1ms for encryption and decryption processing;
• Supports PAL and NTSC analog video stream encryption and decryption, including various FPV cameras, Thermal imaging cameras, etc；
• Encrypt and decrypt with the same hardware module via dip switch setting;
• Set encryption and decryption passwords through serial port；
• Suitable for any FPV VTX, scrambling on the video cable square layout, suitable for assembly with VTX；
• Upgrade FPV security；
• Prevent others from viewing your private videos.

Video encryption principle

It collects CVBS video and performs analog to digital conversion, encrypt the converted digital signal through FPGA, reprocess the video image, then output it for digital to analog conversion, finally convert it into standard CVBS output to the transmitter.

Video decryption principle:

The CVBS video signal received by the receiver to do analog to digital conversion, decrypt the converted digital signal through FPGA, reprocess the video image, then output it for digital to analog conversion, finally convert it into standard CVBS output to the display.

FPV video scrambler and descrambler connection diagram:

Hardware description

The size of the SAC module is 34.5*34.5mm, the top height within 3mm and bottom height within 1mm, board thickness is 1.2mm. The diameter of the fixing holes on the four corners is 2.5mm. The weight of the SAC module is 4.3 grams.

Dial switch

To set whether the SAC module worked as an encryption or decryption function module. When the dip switch is turned to "on" (as shown in the above picture, turned to the left), it is used as an encryption function module. When the dip switch is turned to "I" (as shown in the above picture, turned to the right), it is used as a decryption function module.

The video frame after encryption and decryption processing

Original CVBS video Encrypted video Encrypted and decrypted video