Abstract: The present invention is a combined encoder and perceptual encrypter for a file of high quality video. The combined encoder and perceptual encrypter includes an encoder and perceptual encrypter. The encoder encodes the file of high quality video as encoded data. The perceptual encryption module perceptually encrypts the encoded data in order to generate restricted video data as perceptually encrypted encoded data.

Abstract: The present invention is a system for transmitting a digital signal which includes an encoder, a perceptual encrypting system and a transmitter. The encoder band-compression encodes a first digital signal as encoded data defining an image. The perceptual encrypting system is coupled to the and perceptually encrypts the encoded data to generate restricted video data as perceptually encrypted encoded data. The transmitter is coupled to the perceptual encrypting system and transmits the perceptually encrypted encoded data. A combined receiver and decoder for the restricted video data as perceptually encrypted encoded data includes a receiver and a decoder. The receiver receives the perceptually encrypted encoded data. The decoder is coupled to the receiver and decodes the perceptually encrypted encoded data to generate low quality video.

Abstract: The present invention is a combined encoder and perceptual encrypter for a file of high quality video. The combined encoder and perceptual encrypter includes an encoder and perceptual encrypter. The encoder encodes the file of high quality video as encoded data. The perceptual encryption module perceptually encrypts the encoded data in order to generate restricted video data as perceptually encrypted encoded data.

Abstract: A distributing system includes an encoder, a perceptual encryption module and a server. The encoder encodes the file of high quality video as encoded data in MP3 format. The encoded file has a plurality of frames. Each frame has a header with a sync and side information and main information. The perceptual encryption module perceptually encrypts the encoded data in MP3 format to generate restricted video data as perceptually encrypted encoded data. The server with a memory bank stores and distributes the perceptually encrypted encoded data. A receiving system receiving system includes a receiver with a memory bank, a perceptual decryption module and a decoder. The receiver receives and stores the perceptually encrypted encoded data. The perceptual decryption module perceptually decrypts the perceptually encrypted encoded data to generate encoded data in MP3 format. The decoder decodes the file of encoded data in MP3 format to generate high quality video.