JPS5616921A - Automatic adjusting system of tape recorder - Google Patents

Automatic adjusting system of tape recorder

Info

Publication number
JPS5616921A
JPS5616921A JP9206679A JP9206679A JPS5616921A JP S5616921 A JPS5616921 A JP S5616921A JP 9206679 A JP9206679 A JP 9206679A JP 9206679 A JP9206679 A JP 9206679A JP S5616921 A JPS5616921 A JP S5616921A
Authority
JP
Japan
Prior art keywords
bias current
automatic adjustment
signal
recorded
frequency characteristics
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP9206679A
Other languages
Japanese (ja)
Other versions
JPS6115490B2 (en
Inventor
Keigiyou Takamune
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP9206679A priority Critical patent/JPS5616921A/en
Publication of JPS5616921A publication Critical patent/JPS5616921A/en
Publication of JPS6115490B2 publication Critical patent/JPS6115490B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To make automatic adjustment into optimum characteristic state surely and quickly, by the automatic adjustment of the bias oscillation circuit so that the bias current satisfying the specified conditions can be obtained by reproducing the specified adjusting signal recorded with different bias current.
CONSTITUTION: The operating mechanism part 2 and bias current adjusting motor 6 are controlled with the CPU4 and control circuit 5, etc., and the adjusting signal mixed with the signals of different frequencies f1, f2 is recorded on the tape recorder 1 for the time T with the bias current I1 and further, recorded with the bias current I2 for the time T. This signal is reproduced and the overall frequency characteristics L1, L2 corresponding respectively to the currents I1,I2 are determined with the level of the reproducing signal in frequencies f1, f2 via the measuring circuit 3 and CPU 4. Further, even if dropout is produced in reproducing signal, the bias current value I corresponding to the optimum overall frequency characteristics L based on equation I is calculated and determined, allowing automatic adjustment for the bias oscillation circuit with the CPU4, circuit 5 and motor 6. Accordingly, automatic adjustment to obtain optimum overall frequency characteristics can be made surely and quickly.
COPYRIGHT: (C)1981,JPO&Japio
JP9206679A 1979-07-19 1979-07-19 Automatic adjusting system of tape recorder Granted JPS5616921A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9206679A JPS5616921A (en) 1979-07-19 1979-07-19 Automatic adjusting system of tape recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9206679A JPS5616921A (en) 1979-07-19 1979-07-19 Automatic adjusting system of tape recorder

Publications (2)

Publication Number Publication Date
JPS5616921A true JPS5616921A (en) 1981-02-18
JPS6115490B2 JPS6115490B2 (en) 1986-04-24

Family

ID=14044092

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9206679A Granted JPS5616921A (en) 1979-07-19 1979-07-19 Automatic adjusting system of tape recorder

Country Status (1)

Country Link
JP (1) JPS5616921A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61178272U (en) * 1985-04-25 1986-11-07
US5122215A (en) * 1989-10-03 1992-06-16 Nippon Graphite Industries, Ltd. Method of producing electrically conductive anisotropic heat sealing connector members

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61178272U (en) * 1985-04-25 1986-11-07
JPH0319176Y2 (en) * 1985-04-25 1991-04-23
US5122215A (en) * 1989-10-03 1992-06-16 Nippon Graphite Industries, Ltd. Method of producing electrically conductive anisotropic heat sealing connector members

Also Published As

Publication number Publication date
JPS6115490B2 (en) 1986-04-24

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