Television receiver with display of audio signals

In a television receiver for selectively displaying a received television picture and an audio signal waveform on the screen of a cathode ray tube, an audio signal to be displayed is applied to a pulse generation circuit where it is converted to a waveform display pulse signal having the phase posit...

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Bibliographic Details
Main Author NAGAI; KUNIO
Format Patent
LanguageEnglish
Published 10.04.1979
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MEASURING
MEASURING ELECTRIC VARIABLES
MEASURING MAGNETIC VARIABLES
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
TESTING
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Summary:In a television receiver for selectively displaying a received television picture and an audio signal waveform on the screen of a cathode ray tube, an audio signal to be displayed is applied to a pulse generation circuit where it is converted to a waveform display pulse signal having the phase position corresponding to the audio signal and this waveform display pulse signal is applied through a video amplifier having a brightness control circuit to the cathode ray tube during the display of the audio signal waveform. In this case, the background level of the screen of the cathode ray tube is changed to be lowered so that a viewer can clearly see the audio signal waveform.
Bibliography:Application Number: US19770849437