The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 08, 1985
Filed:
Aug. 30, 1982
Victor Company of Japan, Ltd., Yokohama, JP;
Abstract
A level display device for audio signal comprises a plurality of bandpass filters having filtering bands of respectively different center frequencies, for band-dividing and filtering an input signal supplied thereto through an input terminal, a level indication signal producing circuit for converting the input signal into a signal in synchronism with a horizontal synchronizing signal of a video signal and having a pulse width in accordance with the level of the horizontal synchronizing signal, and serially obtaining the converted signal in sychronism with a vertical synchronizing signal of the video signal by successive time-division carried out during a vertical scanning period, a character indication signal producing circuit stored with information signals for displaying characters and the like, for serially obtaining a character indication signal in synchronism with a synchronizing signal of the video signal, and a video signal composing circuit driven by the video signal, for obtaining a video signal by composing an output of the level indication signal producing circuit and an output of the character indication signal producing circuit. The level display device composes and displays bars in a horizontal direction corresponding to the audio signal level, characters, and the like, on a screen of a picture tube, by the outputs of the level indication signal producing circuit and the character indication signal producing circuit.