System and method for removing noise when switching between head

Details System and method for removing noise when switching between head System and method for removing noise when switching between head

1992-05-08

1994-09-06

Hajec, Donald

Dynamic magnetic information storage or retrieval

General recording or reproducing

Signal switching

360 26, G11B 1514, G11B 2020

Patent

active

053453441

ABSTRACT:
Audio playback system and method for a Hi-Fi VCR capable of preventing an occurrence of noise when audio heads are switched. When an azimuth occurs with respect to each arrangement angle of audio heads or when one of audio signals played back audio heads is delayed due to the elasticity of VCR tape, a correction signal generator detects a phase difference between the audio signals and corrects error in the audio signals according to the detected phase difference. By switching units, error corrected audio signals are switched and combined into continuous audio signals, each corresponding to a stereo channel. As a result, it is possible to avoid an occurrence of noise at a portion at which audio signals of the same stereo channel are connected.

REFERENCES:
patent: 5218486 (1993-06-01), Wilkinson

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