Patent ID: 11863812
Assignee: MAXELL, LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A video signal processing device, comprising:
a video interface that receives a compressed video signal encrypted with a first encryption method from an external device and outputs an uncompressed video signal to the external device;
a decryption processor that decrypts the compressed video signal received by the video interface and encrypted with the first encryption method;
a decoder that decodes the compressed video signal that is decrypted by the decryption processor and generates the uncompressed video signal; and
an encryption processor that encrypts an uncompressed video signal to be output from the video interface with a second encryption method,
wherein the video interface connects with the external device via an interface cable, and
wherein the video interface receives the compressed video signal from the external device and outputs the uncompressed video signal that is encrypted by the encryption processor to the external device through a bi-directional line in the interface cable.