Abstract: A screening structure for a cathode ray tube display includes at least a cathode ray tube pin socket, a cathode ray tube input pin and a video amplifier section joined as one body and enveloped with a first screening member which has high conducting characteristics, and a cathode ray tube cathode section enveloped with a second screening member which has high conducting characteristics, the first and second screening members being connected as one body in order that they may be maintained at the same high frequency potential. The screening members are joined to the standard potential part of the cathode ray tube display by a cable having a low high-frequency impedance.

Abstract: A method for recording digital information on a recording medium immediately after a silence interval is disclosed. A signal sound of a predetermined level is recorded at the beginning of the digital information stored on the recording medium. Preferably, a silence interval is placed between the signal sound of the predetermined level and the beginning of the digital information.