JPS55139657A - Tape recorder - Google Patents

Tape recorder

Info

Publication number
JPS55139657A
JPS55139657A JP4414679A JP4414679A JPS55139657A JP S55139657 A JPS55139657 A JP S55139657A JP 4414679 A JP4414679 A JP 4414679A JP 4414679 A JP4414679 A JP 4414679A JP S55139657 A JPS55139657 A JP S55139657A
Authority
JP
Japan
Prior art keywords
frequency
voltage
circuit
difference
motor
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.)
Pending
Application number
JP4414679A
Other languages
Japanese (ja)
Inventor
Masaharu Kobayashi
Atsushi Sasaki
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4414679A priority Critical patent/JPS55139657A/en
Publication of JPS55139657A publication Critical patent/JPS55139657A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To make it possible to correct a difference in speed between different units by equalizing a tape feed speed in reproduction to that in recording by a motor control signal from the method of outputting the motor control signal.
CONSTITUTION: Frequency difference detector 8 consists of frequency difference detecting circuit 16 and reference frequency oscillating circuit 17. Thus, a difference between a biase signal frequency and the frequency of reference frequency oscillating circuit 17 is detected. Driving part 9 consists of frequency voltage converting circuit 18 and motor driving amplifying circuit 19 and the output signal of frequency difference detector 8 is converted by frequency voltage converting circuit 18 into a voltage equivalent to the frequency. This voltage is amplified by motor driving amplifier 19 to drive motor 15 varying in rotational frequency according to the voltage.
COPYRIGHT: (C)1980,JPO&Japio
JP4414679A 1979-04-13 1979-04-13 Tape recorder Pending JPS55139657A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4414679A JPS55139657A (en) 1979-04-13 1979-04-13 Tape recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4414679A JPS55139657A (en) 1979-04-13 1979-04-13 Tape recorder

Publications (1)

Publication Number Publication Date
JPS55139657A true JPS55139657A (en) 1980-10-31

Family

ID=12683487

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4414679A Pending JPS55139657A (en) 1979-04-13 1979-04-13 Tape recorder

Country Status (1)

Country Link
JP (1) JPS55139657A (en)

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