TAPE NOISE REDUCTION SYSTEM - PIONEER ELECTRONIC CORP

Title:

TAPE NOISE REDUCTION SYSTEM

Document Type and Number:

Japanese Patent JPS586508

Kind Code:

A

Abstract:

PURPOSE: To make the size of a tape recorder small entirely, by using a time constant circuit commonly at recording and reproduction.

CONSTITUTION: A recording or reproducing signal is given to an impedance division circuit 4 via switch amplifiers 1 and 2. The circuit 4 has a series connection of a resistor R1 inserted equivalently in series with a signal line, a coil L1 inserted in parallel, a capacitor C1 and a resistor R2, in which noise reduction at ≥8kHz at reproduction is performed and a deemphasis function restoring the reduction at reproduction is provided. Thus, the deterioration in frequency characteristics of a tape is removed and mistracking for intermediate signal modulation due to saturated high frequency signals can be prevented.

Inventors:

NAMIENO AKIRA
NAGASHIMA NOZOMI
KOMINAMI YASUO
OOKUBO YUUICHI

Application Number:

JP10523381A

Publication Date:

January 14, 1983

Filing Date:

July 06, 1981

Export Citation:

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Assignee:

PIONEER ELECTRONIC CORP
HITACHI LTD

International Classes:

H04B1/62; G11B20/04; G11B20/22; H03G7/00; (IPC1-7): G11B5/033

Domestic Patent References:

JPS5439516A

1979-03-27

Attorney, Agent or Firm:

Motohiko Fujimura

Next Patent: SILICON CARBIDE YARN AND ITS PRODUCTION