JPH03256265A - Pcm sound corresponding recording and reproducing device - Google Patents

Abstract

PURPOSE:To independently make a selection among sound signals recorded in a linear system, an FM system and a PCM system respectively and to make this changeover by providing a linear sound recording changeover switch, an FM sound recording changeover switch and a PCM sound recording changeover switch. CONSTITUTION:A sound signal recorded in the linear system from a tuner 7 is selected by the linear sound recording changeover switch 1, while a sound signal recorded in the linear system from an external input terminal 1' or 2' is selected by the linear sound changeover switch 2, and they are supplied respectively to a linear sound recording processing circuit 8. Similarly, a sound signal recorded in the FM system from the tuner 7 and the terminals 1' and 2' is selected by the FM sound recording changeover switches 3 and 4 and supplied to an FM sound recording processing circuit 9. Similarly, a sound signal recorded in the PCM system from the tuner 7 and the terminals 1' and 2' is selected by a PCM sound recording changeover circuits 5 and 6 and supplied to a PCM sound recording processing circuit 10.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention provides a PCM audio compatible magnetic recording/reproducing device,
The present invention relates to a method for selecting and switching among audio signals recorded by a linear method, an FM method, and an audio signal recorded by a PCM method.

[Conventional technology]

Currently, in magnetic recording and reproducing devices, audio signals recorded on a magnetic tape include audio signals recorded using an AC bias method on a linear track portion using a fixed head (audio signals recorded by a linear method); There is an audio signal recorded in the deep part of the tape using the FM method. In this case, the audio signal to be recorded is either an audio signal received by a tuner built into the device or an audio signal input from an external input terminal.

In conventional equipment, the simulcast function is
The audio signal received by the tuner is recorded by a linear audio recording processing circuit, and the audio signal input from an external input terminal is recorded by an FM audio recording processing circuit.

[Problem to be solved by the invention]

However, even if an audio signal recording/playback function using the PCM method is added to a conventional device, the audio signals recorded using each method cannot be selected independently. It is always the same as the audio signal recorded by this method. An object of the present invention is to enable independent selection and switching between audio signals recorded by the linear method, audio signals recorded by the FM method, and audio signals recorded by the PCM method.

[Means for Solving the Problems] The above object is achieved by providing a linear audio recording switch, an FM audio recording switch, and a PCM audio recording switch.

[Effect]

The above audio signal selection/switching switches (linear audio recording switching switch, FM audio recording switching switch, and PCM
The audio recording selector switch) converts the signal obtained by selecting an arbitrary audio signal from the audio signal received by the tuner and the audio signal input from the plurality of external input terminals into the linear audio recording mode. It outputs to the processing circuit, FM audio recording processing circuit, and PCM audio recording processing circuit.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. When the operator of the magnetic recording and reproducing apparatus sets the tuner reception mode, the audio signal received by the tuner 7 is input to one input terminal 11 of the first linear audio recording changeover switch l. At this time, the output terminals 3 and 13 of the first linear audio recording changeover switch 1 select one input terminal 11 side. Further, the output terminal 33 of the first FM audio recording switch 3 selects one input terminal 31 side, and the output terminal 53 of the first PCM audio recording switch 5 selects one input terminal 51 side.
Let them choose a side. As a result, the linear audio recording processing circuit 8. FM audio recording processing circuit 9. All audio signals input to the PCM audio recording processing circuit 10 are sent to the tuner 7.
This is the audio signal received by.

Next, when the operator sets the external input mode, the operator selects whether the audio signal recorded using the linear method will be input from external input terminal 1 or external input terminal 2. The selection is made using the linear audio recording selector switch 2. If the external input terminal 1 is selected, the output terminal 23 of the second linear audio recording changeover switch 2 selects one input terminal 21 side. At this time, the output terminal 13 of the first linear audio recording changeover switch 1 selects the other input terminal 12 side, and the audio signal input to the linear audio recording processing circuit 8 is input from the external input terminal l. Voice can also be a signal. Selection of the audio signal to be recorded using the FM method is performed by the second FM audio recording changeover switch 4. If the external input terminal 1 side is selected, the output terminal 43 of the second FM audio recording switch 4 is connected to one input terminal 4.
Select side 1. The output terminal 33 of the first FM audio recording switch 3 selects the other input terminal 32 side, and
The audio signal input to the M audio recording processing circuit 9 is the audio signal input from the external input terminal 1. Selection of the audio signal to be recorded using the PCM method is performed by the second PCM audio recording changeover switch 6. If the external input terminal 2 side is selected, the output terminal 63 of the second PCM audio recording changeover switch 6 selects the other input terminal 62 side. The output terminal 53 of the first PCM audio recording switch 5 is
The other input terminal 52 side is selected and the audio signal input to the PCM audio recording processing circuit 10 becomes the audio signal input from the external input terminal 2.

Finally, when the operator sets the simulcast mode, the output terminal 1 of the first linear audio recording switch 1
3 selects one input terminal 11 side, and the audio signal input to the linear audio recording processing circuit 8 becomes the audio signal received by the tuner 7. Selection of the audio signal to be recorded using the FM method is performed by a second FM audio recording changeover switch. If the external input terminal 1 side is selected, the output terminal 43 of the second FM audio recording changeover switch 4 selects one input terminal 41 side. At this time, the first F
The output terminal 33 of the M audio recording changeover switch 3 selects the other input terminal 32 side, and the audio signal input to the FM audio recording processing circuit 9 becomes the audio signal input from the external input terminal 1. Selection of the audio signal to be recorded using the PCM method is performed by the second PCM audio recording changeover switch 6. If the external input terminal 2 side is selected, the output terminal 63 of the second PCM audio recording changeover switch 6 selects the other input terminal 62 side. At this time, the output terminal 53 of the first PCM audio recording changeover switch 5 selects the other input terminal 52 side, and the audio signal input to the PCM audio recording processing circuit 1° is input from the external input terminal 2. It becomes an audio signal.

As described above, according to this embodiment, when the operator sets the external input mode and the simulcast mode, an audio signal recorded by the linear method, an audio signal recorded by the FM method, and an audio signal recorded by the PCM method. Each signal can be selected independently.

〔Effect of the invention〕

According to the present invention, in a magnetic recording and reproducing device compatible with PCM audio, it is possible not only to simply add a high-quality PCM audio recording and reproducing function, but also to arbitrarily select an audio signal to be recorded from among a plurality of audio signals. Therefore, usability can be further improved.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention. 1...First linear audio recording selector switch 2...Second linear audio recording selector switch 3...First FM audio recording selector switch 4...Second FM audio recording selector switch 7・ 5... First PCM audio recording switch 6... Second PCM audio recording switch 7... Tuner 8... Linear audio recording processing circuit 9... FM audio recording processing circuit 10.・・PCM audio recording processing circuit

Claims (1)

[Claims] 1. Connect a tuner to one input terminal of the first linear audio recording selector switch, connect the output terminal of the second linear audio recording selector switch to the other input terminal, and connect the first FM audio to the output terminal. One input terminal of the recording selector switch,
one input terminal of the first PCM audio recording selector switch;
and a linear audio recording processing circuit; one input terminal of the second linear audio recording changeover switch is connected to external input terminal 1, one input terminal of the second FM audio recording changeover switch, and one input terminal of the second FM audio recording changeover switch; Connect one input terminal of the PCM audio recording selector switch, and connect the external input terminal 2 to the other input terminal.
, the other input terminal of the second FM audio recording selector switch,
and connect the other input terminal of the second PCM audio recording switch; connect the output terminal of the second FM audio recording switch to the other input terminal of the first FM audio recording switch; An FM audio recording processing circuit is connected to the terminal; an output terminal of the second PCM audio recording switching switch is connected to the other input terminal of the first PCM audio recording switching switch, and a PCM audio recording processing circuit is connected to the output terminal. P did
Magnetic recording and reproducing device compatible with commercial audio.