JPS59104702A - High-speed copying device - Google Patents

Abstract

PURPOSE:To record and copy signals at a high speed by providing a tape recording means which is capable of speed switching synchronous with the speed increasing ratio of a record reproducing means and a phonoequalizer which compensates the reproduced signal in response to its speed. CONSTITUTION:In a normal copy mode switches 22 and 23 are set at the side of a fixed contact bar (a). The output of a record player 11 is supplied to an input terminal 17 of an audio amplifier 12 through the switch 22 and an output terminal 15. In a high-speed copy mode a record disk of 33+1/3rpm is revolved by the player 11 with 45rpm, and a tape recorder 13 is changed to a high-speed mode. That is, the switches 22 and 23 are changed toward a fixed contact bar (b). Then the number of revolutions of a capstan motor 32 is changed in response to the switching of characteristics of a record amplifier 26. In this case, the signal is applied to a magnetic head 27 from the amplifier 26 through a phonoequalizer 25 incorporated into the recorder 13. Then the signal is recorded on a magnetic tape 34 by the head 27.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a high-speed copying apparatus capable of recording a reproduction signal from a record reproduction means onto a magnetic tape at high speed by means of a tape recording means.

Conventional Structure and Problems Generally, when recording music or other signals recorded on a record onto a magnetic tape, a record player 1 rotates the record at a specified number of revolutions, for example 33, as shown in FIG. i rpm or 45 rpm, and send the playback signal from the record player 1 to the audio amplifier 2.
The data is input to the tape recorder 3 via the tape recorder 3, and is recorded on a magnetic tape that is run at a constant speed. In this case, the record player 1
Since the playback signal from the phono cartridge is the output of a honocart cartridge, it is a minute signal of several mV or less, and the recording characteristics of the record are not perfectly constant amplitude characteristics but are recorded with specific frequency characteristics (RIAA recording characteristics). Instead, it is amplified in advance by the audio amplifier 2, and the frequency characteristics (RIAA playback characteristics) are completely opposite to the recording characteristics.
A built-in holo equalizer has a flat characteristic, and the signal is input to the tape recorder 3. However, with the above-mentioned copying apparatus, if an attempt is made to copy a faith recorded on a double-sided record of 60 minutes onto a magnetic tape, it will take at least 60 minutes.
There was a problem that the copying time could not be shortened.

OBJECTS OF THE INVENTION An object of the present invention is to provide a high-speed copying apparatus that can record signals recorded on a record onto a magnetic tape at high speed and reduce the copying time.

Structure of the Invention The high-speed copying apparatus of the present invention comprises: a record playback means capable of changing the number of revolutions; a tape recording means capable of changing speed in synchronization with the speed increase ratio of the record playback means; The apparatus is equipped with a holo equalizer which performs correction processing on the reproduction signal from the reproduction means according to its speed and inputs the resultant signal to the tape recording means.

DESCRIPTION OF THE EMBODIMENTS FIG. 2 shows an embodiment of the high-speed copying apparatus of the present invention. In FIG. 2, 11 is a record player, 12 is an audio amplifier, and 13 is a tape recorder. The record player 11 has two speeds: 33 rpm and 45 rpm.
It is configured so that it is possible to switch between different types of rotation speed. The audio amplifier 12 has a built-in holo equalizer (not shown) having frequency characteristics (RIAA playback characteristics) that are completely opposite to the recording characteristics of a record. The tape recorder 13 has mutually interlocking switches 22 and 23, a high-speed audio equalizer 25, and a recording amplifier 26. A signal from the recording amplifier 26 is applied to a magnetic head 27, and the winding supply reel 28, supply reel 29. The information is recorded on a magnetic tape 34 that is run by a tape running means composed of a pinch roller 3o and four capstans 31. The drive motor 32 of the capstan 31 is configured to be switched by a rotation speed switching circuit 33, and the characteristics of each of the switches 22, 23 and the recording amplifier 26 are switched in conjunction with the rotation speed switching circuit 33. It is now possible to The tape recorder 13 has a record player input terminal 14. Output terminal 16 and input terminal 16
The output terminal 19 of the record player 11 is connected to the record player input terminal 14, the output terminal 15 is connected to the input terminal 17 of the audio amplifier 12, and the input terminal 16 is connected to the record player input terminal 14. is connected to the output terminal 18 of the audio amplifier 12.

In such a configuration, when performing normal copying, the switches 22 and 23 are turned on to the fixed contacts a11IK. Here, when the record player 11 is used at a normal rotation speed, that is, when a 33-rpm record is played back at a rotation speed of 331 rpm, the output of the code player 11 is changed to the switch 22. It enters the input terminal 17 of the audio amplifier 12 through the output terminal 15. Then, after passing through the normal holo equalizer in the audio amplifier 12, the output terminal 1
The signal from 8 enters an input terminal 16 of tape recorder 13. Even when the performance is performed on the record player and not recorded on tape, the switch 22 must be set to the a side as described above. Next, the signal input from input terminal 16 is sent to switch 2.
3, is amplified by a recording amplifier 26, and then recorded on a magnetic tape 34 by a magnetic head 27.

During normal recording as described above, the motor rotation speed switching circuit 33. The switches 22 and 23 degrees and the switching of the characteristics of the recording amplifier 26 are linked, and the normal mode is established.

On the other hand, during high-speed copying, the record player 11 rotates a 33-grpm record at 45 rpm, the mode of the tape recorder 13 is switched to high-speed mode, that is, the switches 22 and 23 are switched to the fixed contact side, and the capstan motor 320 Switching of the rotation speed and switching of the characteristics of the recording amplifier 26 are performed in conjunction with each other. In this case, the output signal from the record player 11 does not pass through the audio amplifier 12, but passes through a built-in holo equalizer 26 in the tape recorder 13, and is applied from the recording amplifier 26 to the magnetic head 27, where it is recorded on the magnetic tape 34. be done. Here, the characteristics of the hono equalizer 26 are shifted to the higher frequency side than those of a normal RI AA reproduction correction circuit.
This is to flatten the frequency characteristics during high-speed reproduction by the record player 11. At this time, the rotation speed of the capstan 31 is approximately 1.35 times the normal rotation speed (-45÷33.3), and the recording is made. However, the reason for switching the characteristics of the recording amplifier 26 is that since the frequency of the input signal increases by about 1.36 times, it is necessary to change the frequency characteristics of the recording current flowing through the magnetic head 27 accordingly.

In addition, although only the recording mode is shown in the above embodiment,
In the playback mode, the high speed mode is not necessary, so playback is the same as with a normal tape recorder. Therefore, the circuit for reproduction is omitted.

In addition to high-speed copying at 1.3 ts times the speed, 33
- When using a code player with n times the rpm (n is any number greater than or equal to 1), the above embodiment can be achieved by installing a corresponding holo equalizer, recording amplifier, and capstan motor switching. It goes without saying that it is also possible to copy at a high speed of n@.

Effects of the Invention As described in detail above, according to the present invention, a tape recording is performed in which the reproduction signal from the record reproduction means whose rotation speed is switchable is rotated at a speed that is synchronized with the speed increase ratio of the record reproduction means. When adding it to the recording medium, it is configured to pass through a holo equalizer that corrects the frequency characteristics according to the speed increasing ratio, so duplication from the record to the magnetic tape is reliably performed. It has the advantage of shortening the copying time.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a conventional copying apparatus, and FIG. 2 is a block diagram showing an embodiment of the high-speed copying apparatus of the present invention. 11...Record player, 12...
Audio amplifier, 13... Tape recorder,
25... River hono equalizer.

Claims (1)

[Claims] It is equipped with a record reproducing means capable of switching the number of revolutions, and a tape recording means capable of running the tape at a speed synchronized with the speed increasing ratio of the record reproducing means, and a reproducing signal from the record reproducing means driven at an increased speed. A high-speed copying apparatus, characterized in that it is applied to the tape recording means through a holo equalizer having RIAA reproduction characteristics that corrects frequency characteristics according to the speed.