JPS5570914A - Detection method for optimum recording bias for magnetic recording and reproducing unit - Google Patents

Detection method for optimum recording bias for magnetic recording and reproducing unit

Info

Publication number
JPS5570914A
JPS5570914A JP14505878A JP14505878A JPS5570914A JP S5570914 A JPS5570914 A JP S5570914A JP 14505878 A JP14505878 A JP 14505878A JP 14505878 A JP14505878 A JP 14505878A JP S5570914 A JPS5570914 A JP S5570914A
Authority
JP
Japan
Prior art keywords
recording
signal
bias
recording bias
reproducing
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
JP14505878A
Other languages
Japanese (ja)
Other versions
JPS6117042B2 (en
Inventor
Yasushi Otake
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 JP14505878A priority Critical patent/JPS5570914A/en
Publication of JPS5570914A publication Critical patent/JPS5570914A/en
Publication of JPS6117042B2 publication Critical patent/JPS6117042B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To automatically enable to detect the optimum recording bias, by using two signals for recording characteristics adjustment and keeping equal the both reproducing levels through the sequential comparison and adjustment for the both recording and reproducing signals.
CONSTITUTION: The control circuit 13 is operated with the depression of the start button, and the switch 1 is controlled and the low band signal fL is recorded and reproduced on the magnetic tape with recording bias fB, and then it is digital signal with the comparator 12 and the D/A converter 14 and stored in the memory 15. Next, high band signal fH is selected and recorded. This reproducing signal is compared with the reproduction level of fL stored before, and the control signal 101 is increased by 1 step with the reproduction level of reproduction level of signal fH> reproduction level of signal fL to deeper the recording bias. In reverse case, the recording bias is shallowed. Thus, the said steps are repeated until the both reproducing levels are equal to detect the optimum recording bias with fixed recording bias when equal.
COPYRIGHT: (C)1980,JPO&Japio
JP14505878A 1978-11-24 1978-11-24 Detection method for optimum recording bias for magnetic recording and reproducing unit Granted JPS5570914A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14505878A JPS5570914A (en) 1978-11-24 1978-11-24 Detection method for optimum recording bias for magnetic recording and reproducing unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14505878A JPS5570914A (en) 1978-11-24 1978-11-24 Detection method for optimum recording bias for magnetic recording and reproducing unit

Publications (2)

Publication Number Publication Date
JPS5570914A true JPS5570914A (en) 1980-05-28
JPS6117042B2 JPS6117042B2 (en) 1986-05-06

Family

ID=15376397

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14505878A Granted JPS5570914A (en) 1978-11-24 1978-11-24 Detection method for optimum recording bias for magnetic recording and reproducing unit

Country Status (1)

Country Link
JP (1) JPS5570914A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58175112A (en) * 1982-04-05 1983-10-14 Akai Electric Co Ltd Automatic bias adjusting method of magnetic recording and reproducing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58175112A (en) * 1982-04-05 1983-10-14 Akai Electric Co Ltd Automatic bias adjusting method of magnetic recording and reproducing device
JPH0120485B2 (en) * 1982-04-05 1989-04-17 Akai Electric

Also Published As

Publication number Publication date
JPS6117042B2 (en) 1986-05-06

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