KR970012416A - Autoreverse device for cassette tape recorder - Google Patents

Abstract

The present invention relates to an auto-reverse of a cassette tape recorder which performs playback in the opposite direction as soon as a silent portion is detected when the tape is played in the forward or reverse rotation, and includes a key input unit, a control unit, and a motor. And a deck switch, a channel switching unit having a shear amplification function, a Dolby unit, a silent section detecting unit, a main amplifier, and a speaker. When the section is detected, the control unit can drive the motor in the opposite direction to quickly perform the regeneration in the opposite direction.

Description

Autoreverse device for cassette tape recorder

Since this is an open matter, no full text was included.

1 is a block diagram showing the configuration of an autoreverse device of a cassette tape recorder according to the prior art.

2 is a block diagram showing the configuration of an autoreverse device for a cassette tape recorder according to the present invention.

3 is a block diagram showing another embodiment of the channel switching unit of the autoreverse device of the cassette tape recorder according to the present invention.

4 is a flowchart showing the operation of the autoreverse device of the cassette tape recorder according to the present invention.

Claims (3)

A key input unit for determining a system operation by a user, a control unit controlling an operation of the system according to an output signal of the key input unit, a motor driven according to the control signal of the control unit, and a tape A channel switch having a shear amplification function and a deck amplification for driving the output signal and outputting a reel pulse signal to the control unit, receiving a channel signal output from the deck assay, and switching channels according to a control signal of the control unit; And a Dolby unit for reducing noise included in the output signal of the channel switching unit, a silent section detection unit receiving an output signal of the channel switching unit, detecting a silent section, and outputting the silent section to the controller, and an output signal of the Dolby unit. Amplifies and outputs the main amplifier according to the control signal of the controller, and outputs the output signal of the main amplifier to a voice signal. An autoreverse device for a cassette tape recorder, characterized in that it is composed of a speaker to be converted into a speaker. 2. The channel switching unit of claim 1, wherein the channel switching unit receives an R channel switch and a reverse R channel signal output from the deck assay, and a forward L channel signal and a reverse L channel output from the deck assay. And an L-channel switching unit for receiving a signal, and a shear amplifier for amplifying the output signals of the R-channel switching unit and the L-channel switching unit. 2. The apparatus of claim 1, wherein the channel switching unit receives a forward reproducing shear amplifier for receiving the forward R channel signal and the forward L channel signal of the deck assay, and the reverse R and L channel output signals of the deck assay. And a forward / backward switching section for receiving output signals of the forward playback shear amplifier and the reverse playback shear amplifier. ※ Note: The disclosure is based on the initial application.