Video signal transmitting apparatus and video signal receiving apparatus

摘要

An interface is realized that can prevent video signals from being copied easily and which uses a luminance/color difference signal transmission scheme with an excellent harmony with a television circuit. In a video transmission using a digital interface, colorimetry information for defining the conversion from the luminance/color difference signal into a primary color signal and video aspect ratio information are transmitted along with the luminance/color difference type video signal. This allows reproduction of video with high quality and high resolution and also realizes a copyright protection which allows only the users authorized by key information to use the content of the video. With this transmission scheme, it is possible to provide a transmitting apparatus, a receiving apparatus and an interface which highly harmonize with a rationalized television-based circuit.

主权项

1. A video signal receiving apparatus connectable with a video signal transmitting apparatus through a first signal line and a second signal line, the video signal receiving apparatus comprising:
an input terminal for receiving digital video signals which are either first type video signals including luminance/color difference signals or second type video signals including three primary color signals through the first signal line; a data processing circuit for decrypting the digital video signals input through the input terminal; and an information transmitter for outputting information to the video signal transmitting apparatus through the second signal line, the information indicating whether the video signal receiving apparatus is capable of handling the first type video signals or not, wherein in a case that the information, transmitted by the information transmitter to the second signal line, indicates that the video signal receiving apparatus is not capable of handling the first type video signals, the video signal receiving apparatus receives information which indicates that the digital video signals are the second type video signals in addition to the second type video signals encrypted by the video signal transmitting apparatus.