JPS61170926A - Tape recorder - Google Patents

Abstract

PURPOSE:To monitor sound recording through a reproducing output terminal by providing such an output terminal for dubbing through a graphic equalizer that output signals are switched by operating a dubbing switch. CONSTITUTION:When normal sound recording which allows dubbing through the graphic equalizer is carried out, recording/reproducing changeover switches 3 and 6 are placed at sound recording sides, dubbing switches 2, 7, and 22 are turned off, and a reproducing input switch 18 for a tape 2 and a sound recording output switch 20 for the tape 2 are turned on. At this time, the signal path of an amplifier input terminal 10, an amplifier input switch 16, the switch 20, the sound-recording output terminal 14, a sound record-input terminal 9, the switch 7, the switch 6, and a sound recording device 5 and the signal path of the switch 7, the switch 2, the switch 3, a playback output terminal 4, the reproducing input terminal 12, the switch 18, and the graphic equalizer are both formed. Consequently, sound recording is monitored while a signal applied to the terminal 10 is recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a tape recorder having two running systems and a dubbing function.

2. Description of the Related Art A conventional tape recorder having a dubbing function has a structure as shown in FIG. In FIG. 2, 1 is a reproducing device included in the first running system, 2.7 is a dubbing switch,
Reference numerals 3 and 6 are recording/reproduction changeover switches, and dubbing switches 2, 7 and recording/reproduction changeover switches 3 and 6 are interlocked with each other. 4 is a playback output terminal of a tape recorder, 6 is a recording device included in the second running system, 8 is a switch for changing the dubbing function via a graphic equalizer,
9 is the recording input terminal of the tape recorder, and 10 is the amplifier input terminal of the graphic equalizer.

11 is a tape 1 playback input terminal, 12 is a tape 2 playback input terminal, 13 is a tape 1 recording output terminal, 14 is a tape 2 recording output terminal, 16 is an amplifier output terminal, 16, 17
．． 1B, 19.20 are changeover switches for each input/output terminal, and 21 is an equalizer section of a graphic equalizer. Input/output terminal switch 16.17. IJ3,1
9.20 is now slow-acting, so when the amplifier input switch 16 is ON, all other switches are OFF, and the tape 1 playback input switch 17 and tape 1 recording switch 19 are ON at the same time. (At this time, all other switches are OFF.) 'No, Tape 2 playback switch 18
and tape 2 recording switch 20 are not turned on at the same time, and at this time all other switches are turned off. In addition, the playback output terminal 4 and the tape 1 playback input terminal 11
, the recording input terminal e and the tape 2 recording output terminal are connected.

With this tape recorder, turn on the dubbing switch 2.7, set the recording/playback switch 3.6 to record, turn on the graphic equalizer dubbing switch 8, and set the input/output switch of the graphic equalizer to the tape 1 playback input switch 17. , when the tape 1 recording output switch 19 is turned on, the first
Running system playback device 1 → dubbing switch 2 → recording/playback switch 3 → playback output terminal 4 → tape 1 non-production input terminal 11 →
Tape 1 playback switch 17 → Equalizer section 21 → Tape 2 recording output switch 2o → Tape 2 recording output terminal 14 →
A signal flows through the path of recording input terminal 9 - graphic equalizer dubbing changeover switch 8 -> dubbing switch 7 -> recording/reproduction changeover switch 6 -> second running system recording device 5, and dubbing can be performed through the graphic equalizer.

Also, by turning on the dubbing switches 2 and 7, turning on the recording/reproducing switches 3 and 6 to record, and turning off the graphic equalizer dubbing switch and switch 8, it is possible to perform dubbing without going through the graphic equalizer.

Furthermore, for normal recording, set the dubbing switch 2°7 to o.
yy, switch the recording/playback switch 3 and 6 to recording,
When the tape 2 playback input switch 18 and the tape recording output switch 20 are turned on, the signal applied to the amplifier input terminal 10 is transferred from the amplifier input terminal 10 to the amplifier input switch 1.
6 -> tape 2 recording - sound output switch 2o -> tape 2 recording output terminal 14 -> recording input terminal 9 -> dubbing switch 7 -> recording/reproduction changeover switch 6 -> recording is performed through the route of the second running system recording device 5.

Problems to be Solved by the Invention In such a conventional tape recorder, when attempting to perform normal recording, the dubbing switches 2 and 7 are turned OFF and the recording changeover switches 3 and 6 are switched to recording, as described above. If you accidentally turn on the input/output switch and turn on the tape 1 playback input switch 17° and the tape 1 recording output switch 19, the playback output terminal 4 - the tape 1 playback input terminal 11 → the tape 1 playback input switch 17 → the equalizer section 21 → A signal system is created: tape 2 recording output switch 2o → tape 2 recording output terminal 14 → recording input terminal 9 → dubbing switch 7 → dubbing switch 2 → recording/playback switch 3 - playback output terminal 4, but this is a loop. Therefore, there is a problem that oscillation occurs. In order to prevent this oscillation, a countermeasure has sometimes been taken in which the dubbing switch 2 and the recording/reproducing switch 6 are not connected to each other as shown in FIG. With this countermeasure, oscillation will not occur because the loop is cut in the middle. However, in this case, since no recording signal is output to the reproduction output terminal 4, recording monitoring from the reproduction output terminal becomes impossible. This makes it extremely inconvenient to use.

Therefore, in order to solve the above-mentioned problems, the present invention is capable of outputting an output signal by operating a dubbing switch without causing oscillation even if an erroneous operation is performed, and in order to solve the above problems. It is equipped with an output terminal for dubbing via a graphic equalizer, which can be switched to be switched on or off.

According to the above-described means, when dubbing is performed via a graphic equalizer, the output of the output terminal for dubbing via the graphic equalizer is inputted to the recording input terminal via the graphic equalizer, thereby making it possible to perform dubbing via the graphic equalizer. During normal recording, the input signal from the recording input terminal is simultaneously recorded and output to the playback output terminal, allowing recording monitoring. Also, at this time, the output terminal for dubbing via the graphic equalizer is cut off, so a loop that causes oscillation cannot occur.

As a result, it is possible to construct a tape recorder with a dubbing function that does not cause oscillation even if an erroneous operation is performed and allows recording monitoring.

Embodiment FIG. 1 is a block diagram of an embodiment of the present invention. In Fig. 1, 1 is the first running system playback device, 2゜7.22 is a dubbing switch, 3 and 6 are recording/playback switching switches, and 2.7, 22 and 3゜6 are interlocked. It looks like this. 4 is a playback output terminal, 5 is a second running system recording device, 8 is a switch for changing the dubbing function via a graphic equalizer, 9 is a recording input terminal, 23 is an output terminal for dubbing via a graphic equalizer, 1o is an amplifier input Terminals, 11 is a tape 1 playback input terminal, 12 is a tape 2 playback input terminal, 13 is a tape 1 recording output terminal, 14 is a tape 2 recording output terminal, 16 is an amplifier output terminal, 16, 17
, 18, 19, and 2Q are changeover switches for each input/output terminal, and 21 is an equalizer section of a graphic equalizer. When the amplifier input switch 16 is ON, all other switches are turned OFF, and the tape 1 playback input switch 17 and tape 1 recording output switch 19 are turned ON at the same time. All switches are OFF, tape 2 playback input switch 18
and tape 2 recording output terminal 20 are not turned on at the same time, and at this time all other switches are turned off.

The operation in this embodiment will be described below. When dubbing via graphic equalizer, use dubbing switches 2 and 7.
．． 22 to ON, dubbing switch 8 via graphic equalizer to ON, recording/playback I selector switch 3.6 to record, input/output selector switch for tape 1Pg raw input, TE 17, tape 1 recording output switch 19 to 0NFC.
do. At this time, the first running system playback device &1 → dubbing switch 2 → recording/reproduction switch 3 → dubbing switch 22 → output terminal for dubbing/guiding via graphic equalizer 23 → tape playback input terminal 11 → tape 1 playback input Switch 17 → Equalizer section 21 of graphic equalizer
→ Tape 2 recording output switch 20 → Tape 2 recording output terminal 14 - Recording input terminal 9 → Via graphic equalizer Dubbing switch 8 → Dubbing switch 7 → Recording/playback switch 6 → Signal system called second running system recording device 5 When performing normal recording that allows dubbing via a graphic equalizer, switch the recording/playback switches 3 and 6 to recording, and turn the dubbing/playing switches 2,
7.Switch 22 to oyy and press tape 2 playback input switch 18. Turn on the tape 2 recording output switch 20.

At this time, amplifier input terminal 1o → amplifier input switch 16
→ Tape 2 recording output switch 20 → Tape 2 recording output terminal 14 → Recording input terminal 9 → Dubbing switch 7 → Recording/playback switch 6 → Signal system path of the second running system recording device 6 and the middle of this thread path Divided from the dubbing switch 7 of Output terminal 16
A signal path is created. This makes it possible to simultaneously record the signal applied to the input terminal 1o of the amplifier and simultaneously monitor the recording. Furthermore, no matter what state the input/output switch of the graphic equalizer is in, there will be no loop in the signal system and no oscillation will occur.

Effects of the Invention The present invention has two running systems, has a dubbing function,
This tape recorder has the function of dubbing via a graphic equalizer by connecting an external graphic equalizer.No matter how you operate the input/output switch, there is no oscillation, and you can easily use the tape recorder to monitor recording. This configuration was achieved with only a small amount of additional circuitry.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an embodiment of the tape recorder of the present invention.
FIG. 2 is a block diagram of a conventional tape recorder, and FIG. 3 is a block diagram of an improved conventional tape recorder. 1... First running system regeneration device, 2.7...
...dubbing switch, 3,6...recording/playback selector switch, 4...playback output terminal, 5...
...Second driving system recording device, 8...Dubbing selection switch via graphic equalizer, 9.
... Recording input terminal, 11 ... Tape 1 playback input terminal, 12 ... Tape 2 playback input terminal,
14...Tape 2 recording output terminal, 16.17.
18, 19.20... Input/output changeover switch, 21... Equalizer section, 22... Output terminal for dubbing via graphic equalizer.

Claims (1)

[Claims] a first running system having a playback function; a second running system having a recording function; a dubbing switch for recording a playback output signal of the first running system to the second running system; It has an output terminal for dubbing via a graphic equalizer for recording the playback output signal of the first running system to the second running system via a connected graphic equalizer, and by operating the dubbing switch. . A tape recorder configured to switch between outputting and blocking the output signal of the dubbing output terminal via the graphic equalizer.