Integrated interface circuit between a television receiver and its peritelevision connector

DETAILED DESCRIPTION What is claimed is: 1.
An integrated interface circuit for connecting a television receiver and its peritelevision connector comprising within a single integrated circuit; a video interface stage having an internal input and an external input for each receiving a video signal and a video output, and video switch means connecting said internal input to said output in a first position and said external input to said output in a second position; an audio interface stage having left and right hand internal video signal inputs and left and right hand external audio signal inputs, left and right hand outputs, first switch means connecting in a first position said right and left internal inputs to said right and left outputs, respectively, and in a second position said right and left external inputs to said right and left outputs, respectively, and a second switch means connecting in a first position a right input to a right output and a left input to a left output and in a second position said left and right inputs to both said left and right outputs; an external switching stage for controlling said switch means of said video stage and said first switching means responsive to an input for selecting internal or external signals; and means for controlling said second switching means.
2.
A circuit as in claim 1, wherein each said switch means includes first and second switches, the common terminals of the switches of the second switch means being respectively connected to the right and left outputs, the common terminals of the switches of the first switch means being each connected to a contact point of one of the switches of the second switch means.
3.
A circuit as in claim 2, wherein said audio stage includes first and second amplifiers, respectively connecting said right and left internal inputs to one contact of said first and second switches of said first switch means and third and fourth amplifiers, respectively connecting said right and left external inputs to the other contact of said first and second switches of said first switch means