VIDEO TAPE RECORDER DEVICE

PURPOSE:To take a test signal recorded/reproduced at the time of test mode as a sine wave and to reduce distortion of the test signal by recording a characteristic on a magnetic tape through a recording equalizer capable of changing over in accordance with the record of audio signal or test signal....

Full description

Saved in:
Bibliographic Details
Main Author NAKAMATSU KEITA
Format Patent
LanguageEnglish
Published 25.05.1993
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
Online AccessGet full text

Cover

More Information
Summary:PURPOSE:To take a test signal recorded/reproduced at the time of test mode as a sine wave and to reduce distortion of the test signal by recording a characteristic on a magnetic tape through a recording equalizer capable of changing over in accordance with the record of audio signal or test signal. CONSTITUTION:At the time of audio signal recording mode, a terminal 3c of a changeover switch 3 is connected to a terminal 3a and a switch 8 of the recording equalizer 4 is ON-controlled. By this procedure, the audio signal supplied to the terminal 3 comes to have a frequency characteristic to raise the specified high range by a series resonance circuit consisting of a resistor 9 and capacitor 10, and is outputted from a differential amplifier 5. At the time of test mode, on the other hand, the terminal 3c is connected to the terminal 3b and the switch 8 is OFF-controlled. The test signal from the terminal 3b is thereby recorded on the magnetic tape as the flat characteristic. Consequently, a high range deterioration is generated in the test signal to be reproduced, and the recording is enabled by converting a rectangular wave to the sine wave.
Bibliography:Application Number: JP19910317391