JPS5514578A - Adjusting unit of recording bias level of tape recorder - Google Patents

Adjusting unit of recording bias level of tape recorder

Info

Publication number
JPS5514578A
JPS5514578A JP8791978A JP8791978A JPS5514578A JP S5514578 A JPS5514578 A JP S5514578A JP 8791978 A JP8791978 A JP 8791978A JP 8791978 A JP8791978 A JP 8791978A JP S5514578 A JPS5514578 A JP S5514578A
Authority
JP
Japan
Prior art keywords
signal
maximum
recording
level
knob
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
JP8791978A
Other languages
Japanese (ja)
Other versions
JPS6011366B2 (en
Inventor
Tsunao Hasegawa
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP8791978A priority Critical patent/JPS6011366B2/en
Publication of JPS5514578A publication Critical patent/JPS5514578A/en
Publication of JPS6011366B2 publication Critical patent/JPS6011366B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To make easy the adjustment of recording level with the illumination of display element, by changing the level of the recorded bias signal from maximum to minimum value and performing the recording and reproduction on the tape while changing again from maximum to minimum value.
CONSTITUTION: The 400 Hz signal is fed to the input of the line amplifier 1 and the knob of the variable resistor of the bias adjusting circuit 6 is set to the maximum position. After that, by turning the knob from the maximum to the minimum position, the recording head 7 receives the 100 KHz signal of which level is changed from the maximum to minimum value superimposed with the 400 Hz signal and the result is recorded on the tape 8. Further, this recorded signal is reproduced with the reproducing head 9 and the DC signal A corresponding to the envelope of the reproducing signal and the peak hold signal B indicating the peak value are compared at the comparison circuit 14. The recording level is adjusted to optimized value by stopping the turning at the illumination time of the display element 18 while turning the knob of the variable resistor as mentioned above.
COPYRIGHT: (C)1980,JPO&Japio
JP8791978A 1978-07-18 1978-07-18 Tape recorder recording bias level adjustment device Expired JPS6011366B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8791978A JPS6011366B2 (en) 1978-07-18 1978-07-18 Tape recorder recording bias level adjustment device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8791978A JPS6011366B2 (en) 1978-07-18 1978-07-18 Tape recorder recording bias level adjustment device

Publications (2)

Publication Number Publication Date
JPS5514578A true JPS5514578A (en) 1980-02-01
JPS6011366B2 JPS6011366B2 (en) 1985-03-25

Family

ID=13928320

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8791978A Expired JPS6011366B2 (en) 1978-07-18 1978-07-18 Tape recorder recording bias level adjustment device

Country Status (1)

Country Link
JP (1) JPS6011366B2 (en)

Also Published As

Publication number Publication date
JPS6011366B2 (en) 1985-03-25

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