JPS6137141U

JPS6137141U - Control circuit for tape recorder with reciprocating playback function

Info

Publication number: JPS6137141U
Application number: JP12216084U
Authority: JP
Inventors: 嘉員成沢
Original assignee: 三洋電機株式会社
Priority date: 1984-08-09
Filing date: 1984-08-09
Publication date: 1986-03-07

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

図示した回路は、本考案の制御回路の一実施例である。主な図番の説明、１・・・・・・第１磁気ヘッド、２・
・・・・・第２磁気ヘッド、３・・・・・・第３磁気ヘ
ッド、４・・・・・・第４磁気ヘッド、５・・・・・・
第１切換スイッチ、６・・・・・・第２切澗スイッチ、
７・・・・・・第３切換スイッチ、８・・・・・・第４
切換スイッチ、９・・・・・・第１前置増幅回路、１１
・・・・・・第１主増幅回路、１２・・・・・・第２前
置増幅回略、１４・・・・・・第２主増幅回路、１９・
・・・・・無信号部検出回路、２１・・・・・・選択ス
イッチ、２２・・・・・・駆動回路、２３・・・・・・
発光ダイオード、２４・・・・・・再生方向切換回路、
２５・・・・・・終端検出回路。The illustrated circuit is one embodiment of the control circuit of the present invention. Explanation of main figure numbers, 1...First magnetic head, 2.
...Second magnetic head, 3...Third magnetic head, 4...Fourth magnetic head, 5...
First selector switch, 6...Second selector switch,
7...Third changeover switch, 8...Fourth
Changeover switch, 9...First preamplifier circuit, 11
...First main amplifier circuit, 12... Second preamplifier circuit, 14... Second main amplifier circuit, 19.
...No-signal portion detection circuit, 21...Selection switch, 22...Drive circuit, 23...
Light emitting diode, 24... Playback direction switching circuit,
25... Termination detection circuit.

Claims

[Scope of utility model registration request]

A tape recorder with a reciprocating playback function, which has a playback function in a first direction and a playback function in a second direction opposite to the first direction, and is configured to enable manual switching of the playback direction. a first magnetic head for reproducing a signal recorded on a track in a first direction;
a second magnetic head for reproducing a signal recorded on a track in a second direction of the magnetic tape; and a signal reproduced by the first magnetic head is inputted when in a reproducing operation state in the first direction; When the reproduction operation state is in the second direction, the signal reproduced by the previous second magnetic head is inputted to the amplifier circuit, and when the reproduction operation state is in the first direction, the signal is reproduced by the second magnetic head. When the output signal is input, the reproduction operation state 1' in the second direction,
At some point, a signal reproduced by the first magnetic head is input, and a no-signal part detection circuit detects a no-signal part between the signals recorded on the magnetic tape, and a no-signal part detection circuit detects a no-signal part between the signals recorded on the magnetic tape. When a detection signal associated with signal section detection is applied, the drive circuit enters an operating state and lights up the display element, and when a detection signal associated with no-signal section detection from the no-signal section detection circuit is applied, the drive circuit becomes operational. and a reciprocating playback function comprising a playback direction switching circuit that switches the playback direction of the magnetic tape when the magnetic tape is turned on, and a selection switch that selects a detection signal from the no-signal portion detection circuit and applies it to the drive circuit and the playback direction switching circuit. Tape recorder control circuit.