KR200281005Y1 - Double deck recorder having a function of extension of recording time - Google Patents

Abstract

The present invention relates to a double-deck recorder with a recording time extension function, which allows to extend the recording time of the cassette tape by separately recording the audio signals of each track of the cassette tape. A head portion, a first equalization amplifier portion, an output amplifier portion, a speaker portion, a B-deck reproduction-recording head portion, a second equalization amplifier portion, an oscillation portion for driving the erasing head means, and the reproduction-recording head portion and A first switching unit connected between the two equalizing amplifiers, a second switching unit connected between the oscillating unit and its operating power supply, and the first and second switching units in accordance with the reproducing or recording operation of the decks A and B A double deck recorder having a first switch control unit for controlling a switching operation; A first channel selector connected between the first equalization amplifier and an output amplifier, for selecting an audio signal output channel of the playhead, and the first channel selector, the playback-recording head, and an output amplifier A second channel selector for selecting an audio signal output channel and an input channel connected between the playback-recording head portion, a first erase head for erasing a magnetic signal recorded on the L track of a cassette tape, and a recording on the R track. An erasing head portion having a second erasing head for canceling the generated magnetic signal, and a third channel connected between the oscillating portion and the erasing head portion to select an output channel of an alternating current output from the oscillating portion to the erasing head portion; Characterized in that it comprises a selection unit.

Description

Double deck recorder having a function of extension of recording time}

The present invention relates to a cassette tape recorder, and more particularly to a double deck recorder having a recording time extension function to extend the recording time of the cassette tape by separately recording the audio signals of each track of the cassette tape. It is about.

In general, a double-deck recorder refers to an audio device that duplicates an audio signal recorded on deck A's cassette tape to deck B's cassette tape.

1 is a block diagram showing the configuration of a conventional double deck recorder.

In FIG. 1, reference numeral 10 denotes a reproduction head for reproducing a voice signal recorded on a cassette tape of deck A, which is converted into an electrical signal, and outputs the first signal. And a second playback head 12 for reproducing the R channel audio signal.

In FIG. 1, reference numeral 20 denotes a first equalization that performs sound quality compensation on a recording signal by lowering a high range level of an electrical voice signal applied from the playhead unit 10 and a high low level when playing a cassette tape. As an amplifying section, it is composed of first and second equalizing amplifiers 21 and 22, whose inputs are connected to the first and second playheads 11 and 12, respectively.

In FIG. 1, reference numeral 30 denotes an output amplifier unit for amplifying and outputting an electric voice signal applied from the first equalization amplifier 20 by a predetermined level, which is output to the output terminals of the first and second equalization amplifiers 21 and 22. The input stage is composed of first and second output amplifiers 31 and 32, respectively.

In FIG. 1, reference numeral 40 denotes a speaker unit which converts an electric voice signal applied from the output amplifier unit 30 into an audible voice signal and outputs the audible voice signal, which is output to the output terminals of the first and second output amplifiers 31 and 32. It is composed of first and second speakers 41 and 42 respectively connected.

In Fig. 1, reference numeral 50 denotes a magnetic signal which converts and outputs an audio signal magnetized and recorded on a cassette tape of deck B into an electrical signal or applies an electrical audio signal applied from the playback head portion 10 of deck A. Is a playback-recording head unit for converting the recording into a cassette tape of B deck.

The reproducing-recording head unit 50 includes a first reproducing-recording head 51 for reproducing or recording an L (left) channel audio signal of a cassette tape, and a second reproducing or recording for an R (right) channel audio signal. And a reproduction-recording head 52.

In FIG. 3, reference numeral 60 denotes an equalization for performing sound quality compensation on the audio signal applied from the play head unit 10 to the play-record head 50 and the sound signal output from the play-record head 50. FIG. As an amplifying unit, it is the third and fifth equalizing amplifiers 61 and 63 and the first and second reproducing-recording heads 51 whose inputs are connected to the first and second reproducing-recording heads 51 and 52, respectively. And 52, fourth and sixth equalization amplifiers 62 and 64 having an output terminal connected thereto.

In FIG. 3, the reference numeral 70 is connected between the reproducing-recording head unit 50 and the second equalization amplifier unit 70 in accordance with a predetermined control signal applied from a switch control unit to be described later. A first switching unit for switching the input / output path of the output audio signal and the recording audio signal input through the second equalization amplifier 60.

In FIG. 3, the first switching unit 70 is connected between the first reproducing-recording head 51 and the third and fourth equalizing amplifiers 61 and 62, respectively, to input / output L channel reproduction or recording audio signals. A first head switch 71 for switching a path and a second reproducing-recording head 52 and fifth and sixth equalizing amplifiers 63 and 64 are respectively connected to each other to input / receive R channel reproduction or recording audio signals. And a second head switch 72 for switching the output path.

In FIG. 3, reference numeral 80 denotes the first switching unit 70 and the second switching unit to be described later according to the first switching mode in which only the deck A or B deck is played and the second switching mode in which the B deck is recorded. It is a switch control unit for applying a control signal of a predetermined voltage level for switching the switching operation.

In addition, the switch control unit 80 is configured to detect the playback or recording operation of the B deck according to the user's key operation to distinguish the first and second switching mode.

In FIG. 1, reference numeral 90 denotes an erasing head unit for generating an alternating magnetic field so that an audio signal previously recorded on a cassette tape is erased during recording operation of deck B, and 100 denotes an alternating current for driving the erase head unit 90. Although the indication line is omitted in FIG. 1, the switching unit 110 switches the connection between the oscillation unit 100 and the operating power source Vs based on a predetermined control signal applied from the switch control unit 80. 2 switching section.

Hereinafter, the operation of the conventional devil deck recorder having the above configuration will be briefly described.

First, in the first switching mode (only when the regeneration operation of deck A or deck B is performed), the switch controller 80 outputs a high level signal to the first switch 70 so as to reproduce the recording-recording head 50 and the second. The third and fifth equalization amplifiers 61 and 63 of the equalization amplifier 60 are connected, and a low level signal is output to the second switching unit 110 to connect the oscillation unit 100 and the operating power supply Vs. Will be blocked.

Then, in the second switching mode (when the recording operation of the deck B is performed), the switch controller 80 is operated in reverse with the first switching mode so that the regeneration-recording head unit 50 and the second equalizing amplifier 60 The fourth and sixth equalization amplifiers 62 and 64 are connected, and the oscillation section 100 and the operating power supply Vs are connected.

Therefore, when only the deck A regeneration operation is performed, the switch controller 80 is operated according to the first switching mode to block the regeneration voice signal of the deck A from flowing into the B deck, and supply operating power Vs to the oscillator 100. To prevent the erase head from operating.

After that, the reproduction head unit 10 reads the magnetic signal recorded on the cassette tape, converts the magnetic signal into an electrical signal, and outputs the electrical signal. The electrical voice signal is transmitted through the equalization amplifier 20 and the output amplifier unit 30 to the speaker unit ( 40 is output as an audible voice signal.

In the case where only the deck deck regeneration operation is performed, the operation is performed in the same manner as the deck A, and thus the detailed description thereof will be omitted.

On the other hand, when the recording operation of the deck B is performed, the switch control unit 80 is operated according to the second switching mode so that the audio signal output from the deck A is introduced into the deck B, and supplies the operating power (Vs) to the oscillator 100. The erase head unit 90 is operated.

Thereafter, the erasing head unit 90 is driven according to the alternating current supplied from the oscillation unit 100 to erase the magnetic signals recorded on the B deck cassette tape, and the reproducing-recording head unit 50 reproduces the deck A. Electrical voice signals transmitted via the head unit 10, the first and second equalization amplifier units 20 and 60, and the first switching unit 70 are converted into magnetic signals and recorded on the cassette tape.

Meanwhile, FIG. 2 illustrates a track structure of a typical cassette tape used in the recorder of FIG. 1. The typical cassette tape includes, for example, a total of four tracks of the front two tracks L1 and R1 and the rear two tracks R2 and L2. The audio signal of one channel is recorded in each track.

Therefore, two-channel stereo sound is not required, such as a cassette tape for language / learning. When the number of tapes used is large, the conventional double deck recorder of FIG. Since the cassette tape consumption is considerable because it must be played back or recorded at the same time, there was an inconvenience of preparing extra cassette tapes separately for a long time recording.

Therefore, the present invention was conceived in view of the above-mentioned purpose, and the recording time extension function was extended to record the audio signal separately for each track of the cassette tape to extend the recording time of the cassette tape and to improve the user's convenience. The purpose is to provide a double deck recorder equipped.

1 is a block diagram showing the configuration of a conventional double deck recorder.

2 is a view showing a track structure of a typical cassette tape.

Figure 3 is a circuit diagram showing the internal configuration of a double deck recorder with a recording time extension function according to an embodiment of the present invention.

4A is a perspective view showing an appearance configuration of the erasing head portion 90 shown in FIG. 1.

4B is a perspective view illustrating an appearance of the erase head 310 shown in FIG. 3.

Figure 5 is a circuit diagram showing the internal configuration of a double deck recorder with a recording time extension function according to another embodiment of the present invention.

*** Explanation of symbols for the main parts of the drawing ***

10: playhead portion, 11, 12: first and second playheads,

20, 60: first and second equalization amplifier section, 30: output amplifier section,

40: speaker portion, 50: playback-recording head portion,

51, 52: first and second reproduction-recording heads, 70: first switching unit,

71 and 72: first and second head switch, 80: switch control unit,

90, 310: erasing head portion, 100: oscillation portion,

110: second switching unit,

320, 330, 340: first to third channel selector,

321, 322, 331, 332, 341, 342: first to sixth channel switch,

510, 530: first and second switch control unit, 520: key panel unit.

In order to achieve the above object, a double deck recorder having a recording time extension function according to the present invention has a reproduction head portion, a first equalization amplifier portion, an output amplifier portion, a speaker portion, and a B deck reproduced sequentially. An oscillation unit for driving a recording head unit, a second equalization amplifier unit, an erasing head means, a first switching unit connected between the reproduction-recording head unit and the second equalization amplifier unit, and between the oscillation unit and its operating power source. A double deck recorder having a second switching unit connected to the first and second switching unit for controlling the switching operation of the first and second switching unit according to the reproduction or recording operation of the deck A and deck B; A first channel selector connected between the first equalization amplifier and an output amplifier, for selecting an audio signal output channel of the playhead, and the first channel selector, the playback-recording head, and an output amplifier A second channel selector for selecting an audio signal output channel and an input channel connected between the playback-recording head portion, a first erase head for erasing a magnetic signal recorded on the L track of a cassette tape, and a recording on the R track. An erasing head portion having a second erasing head for canceling the generated magnetic signal, and a third channel connected between the oscillating portion and the erasing head portion to select an output channel of an alternating current output from the oscillating portion to the erasing head portion; Characterized in that it comprises a selection unit.

In addition, the present invention is connected to the key panel unit having at least one selection key for selecting a connection channel of the first to third channel selection unit, and between the first to third channel selection unit and the key panel unit And a second switch controller configured to control a switching operation of the first to third channel selectors so that a corresponding channel is connected according to a key operation of the key panel unit.

Therefore, according to the above configuration, it is possible to extend the recording time of a general cassette tape and to improve user convenience.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

3 is a circuit diagram showing the internal configuration of a double-deck recorder with a recording time extension function according to an embodiment of the present invention, the same reference numerals are assigned to the same components as those shown in FIG. Detailed description will be omitted.

In FIG. 3, reference numeral 310 denotes an erasing head unit for generating an alternating magnetic field for each channel so as to erase at least one of an L channel and an R channel voice signal recorded on the cassette tape during the recording operation of the deck B, which is the L of the cassette tape. A first erasing head 311 for erasing the magnetic signals recorded in the track, and a second erasing head 312 for erasing the magnetic signals recorded in the R track.

4A and 4B are perspective views showing the structure of the conventional erasing head portion 90 and the erasing head portion 310 according to the present invention, respectively. In the erasing head portion 90 of FIG. Although the head surface H1 in contact with the track is configured integrally, in the erasing head portion 310 of FIG. 4B, the head surface H2 of the first erasing head 311 in contact with the L track of the cassette tape, The head surface H3 of the second erasing head 312 in contact with the R track is separated at a predetermined distance to selectively erase the magnetic signals recorded on the L track and the R track of the cassette tape.

In FIG. 3, reference numeral 320 is a first channel selector connected to the first equalization amplifier 20 and the output amplifier 30 to select an audio signal output channel of the playhead unit 10. The first channel switch 321 connected between the first equalizing amplifier 21 and the first output amplifier 31 and the second channel switch connected between the second equalizing amplifier 22 and the second output amplifier 32. 322 is provided.

In FIG. 3, when the first and second channel switches 321 and 322 are respectively located at the first contact point a, the L channel is selected as the output channel of the playhead unit 10, and the second contact point b is shown in FIG. In the case of being located at), the R channel is selected as the output channel. In case of being located at the third contact point c, the L channel and the R channel are selected as the output channel.

The first and second channel switches 321 and 322 are configured to be moved / selected in the same manner when the position / movement to the first to third contacts a, b, and c is performed. For example, when the first channel switch 321 is located at the first contact point a, the second channel switch 322 is also located at the first contact point a.

In FIG. 3, reference numeral 330 selects an input (recording) channel (L channel, R channel) of an audio signal applied from the play head portion 10 of deck A to the play-recording head portion 50 of deck B. A second channel selector for selecting the output (playback) channel (L channel, R channel) of the audio signal applied from the play-recording head section 50 of the B deck to the output amplifier section 30.

In FIG. 3, the second channel selector 330 includes a third channel switch 331 connected between the connection node of the third and fourth equalization amplifiers 61 and 62 and the first channel switch 321. And a fourth channel switch 332 connected between the connection node of the fifth and sixth equalization amplifiers 63 and 64 and the second channel switch 322.

In FIG. 3, when the third and fourth channel switches 331 and 332 are positioned at the fourth contact point d, respectively, the L channel is used as the output channel of the playhead 10 or the play-record head 50. If the position is selected at the fifth contact point e, the R channel is selected as the output channel. If the position is located at the sixth contact point f, the L channel and the R channel are selected as the output channel. The third and fourth channel switches 331 and 332 are configured to be moved / selected in the same manner when the position / movement to the fourth to sixth contacts d, e, and f is performed.

In FIG. 3, reference numeral 340 is a third channel selector connected between the oscillator 100 and the erase head 310 to select an output channel of an alternating current output from the oscillator 100, which is an oscillator 100. A fifth channel switch 341 connected between the output terminal of the oscillator 100 and the first erase head 311 and a sixth channel switch 342 connected between the output terminal of the oscillator 100 and the second erase head 312. It is configured by.

In FIG. 3, when the fifth and sixth channel switches 341 and 342 are respectively located at the seventh contact j, the fifth and sixth channel switches 341 and 342 connect the first erase head 311 and the oscillator 100 to erase the L channel. The second erasing head 312 and the oscillation unit 100 for R channel erasing are connected when located at the eighth contact point k, and the L and R channels are erased when the second erasing head 312 and the oscillator 100 are located at the ninth contact point l. The first and second erase heads 311 and 312 and the oscillator 100 are connected to each other.

In addition, the fifth and sixth channel switches 341 and 342 are configured to be moved / selected in the same manner when the position / movement to the seventh to ninth contacts j, k, and l is performed.

In FIG. 3, the first to third channel selectors 320, 330, and 340 are configured as slide switches that are switched according to a user's physical key operation, and the first to third channel selectors 320, 330, and 340. ) May be physically connected to the first to third channel selectors 320, 330, and 340 so that the same switch is performed according to one key operation.

Hereinafter, the operation of the present invention having the above configuration will be described.

[Playback Action]

First, a user who wants to play back a cassette tape inserted in deck A has a key operation of the first channel selector 320 to output audio channels (L channel, R channel, L + R) of the audio signal output from the playhead unit 10. Channel). In this case, the switch control unit 80 connects the first and second head switches 71 and 72 to the third and fifth equalizing amplifiers 61 and 63, respectively, according to the first switching mode, which is a basic setting, to reproduce the head unit. The audio signal output from 10 may be prevented from flowing into the reproducing-recording head unit 50 and the second switching unit 110 is controlled to cut off the supply of the operating power Vs to the oscillator 100.

In this case, the cassette tape to be played is a tape recorded separately for each of the L and R channels according to the present invention, and the first and second channel switches 321 and 322 of the first channel selector 320 are connected to the first contact point a. The L channel audio signal read out from the first playhead 11 is output through the speaker unit 40 via the first equalizing amplifier 21 and the output amplifier unit 30 when positioned at.

In addition, when the first and second channel switches 321 and 322 of the first channel selector 320 are positioned at the second contact point b, the R channel audio signal read from the second playhead 12 is second to the second channel. It is output through the speaker unit 40 via the equalization amplifier 22 and the output amplifier unit 30.

When the cassette tape to be reproduced is a general tape recorded in stereo, the user places the first and second channel switches 321 and 322 of the first channel selector 320 at the third contact point c. The L channel and R channel voice signals read from the first and second playheads 11 and 12 are output through the speaker unit 40 via the first equalization amplifier 20 and the output amplifier unit 30. .

Meanwhile, the channel-specific output operation of the audio signal during the playback operation through the deck B is performed by the key operation of the second channel selector 330, which is similar to the channel-specific output operation of the deck A described above. It will be omitted.

[Recording operation]

On the other hand, when recording the reproduced audio signal of deck A on the cassette tape of deck B, in this case, the switch control unit 80 sets the first and second head switches 71 and 72 according to the second switching mode, respectively. Connected to the equalizing amplifiers 62 and 64, the audio signal output from the playhead unit 10 is introduced into the play-recording head unit 50, and the second switching unit 110 is controlled to the oscillator 100. The operating power supply Vs is supplied.

Then, the user key-operates the first to third channel selectors 320, 330, and 340 to select the output channel of the audio signal output from the play head portion 10 of the deck A, and the play-recording head of the deck B. In addition to selecting the input channel of the audio signal applied to the unit 50, the channel to be erased is selected.

In this case, when the user wants to record the L-channel audio signal of the deck A to the L channel of the deck B, the user operates the first to third channel selectors 320, 330, and 340 to operate the first to sixth channel switches 321. 322, 331, 332, 341, and 342 are positioned at the contacts a, d, and j, respectively, and the first to sixth channel switches 321 to record the R channel audio signal of the A deck to the R channel of the B deck. 322, 331, 332, 341, and 342 are located at the contacts b, e, and k, respectively, and the first to sixth channels are to record the L + R channel audio signal of the deck A to the L + R channel of the deck B. The switches 321, 322, 331, 332, 341 and 342 are positioned at the contacts c, f and l, respectively.

In addition, the audio signal output from the playhead unit 10 of deck A according to the above switching operation includes the first equalization amplifier 20, the first channel selector 320, the second channel selector 330, and the first audio amplifier. Via the second equalization amplifier 60, the first switching unit 70 is applied to the recording-recording head unit 50 of the deck B to be recorded.

Figure 5 is a circuit diagram showing the internal configuration of a double deck recorder with a recording time extension function according to another embodiment of the present invention, the same configuration as shown in Figure 3 in Figure 5 with the same reference numerals Detailed description will be omitted.

In FIG. 5, reference numeral 510 denotes a first switch controller which performs the same operation as the switch controller 80 of FIG. 3, and 520 denotes a user selecting a connection channel of the first to third channel selectors 320, 330, and 340. And a key panel unit having at least one selection key therein, and 530 is connected between the first to third channel selection units 320, 330, and 340 and the key panel unit 520. The second switch controller controls the switching operation of the first to third channel selectors 320, 330, and 340 so that the corresponding channel is connected according to a key operation.

According to the above configuration, the user can operate the key panel unit 520 to simply perform the channel selection operation of the first to third channel selection units 320, 330, and 340.

As described above, the present invention provides a double-deck recorder capable of reducing the consumption of cassette tapes by doubling the recording time of a typical cassette tape by separately recording a voice signal for each track of the cassette tape.

In addition, when the present invention is used when recording a cassette tape for language / lecture, it is possible to easily record and play back a small amount of voice / lecture using a cassette tape for a long time.

Claims (7)

A regeneration head portion, a first equalization amplifier portion, an output amplifier portion, a speaker portion, a regeneration-recording head portion, a second equalization amplifier portion, and an oscillation portion for driving the erasing head means of the deck A, which are sequentially connected; A first switching unit connected between the reproducing-recording head unit and a second equalizing amplifier unit, a second switching unit connected between the oscillating unit and its operating power source, and A or B decks according to the reproducing or recording operation A double deck recorder having a first switch control unit for controlling the switching operation of the first and second switching unit; A first channel selector connected between the first equalization amplifier and an output amplifier to select an audio signal output channel of the playhead; A second channel selector connected between the first channel selector and the play-record head and an output amplifier to select an audio signal output channel and an input channel of the play-record head; An erasing head portion having a first erasing head for erasing a magnetic signal recorded in the L track of the cassette tape and a second erasing head for erasing the magnetic signal recorded in the R track; And a third channel selector connected between the oscillator and the erase head to select an output channel of an alternating current output from the oscillator to the erase head, wherein the double deck recorder has a recording time extension function. . The method of claim 1, The playhead section includes a first playhead for reproducing an L channel voice signal and a second playhead for reproducing an R channel voice signal, The first equalization amplifier includes first and second equalization amplifiers connected to the first and second playheads and input terminals thereof, respectively. The reproduction-recording head portion includes a first reproduction-recording head for reproducing or recording an L channel audio signal, and a second reproduction-recording head for reproducing or recording an R channel audio signal, The second equalizing amplifier includes third and fifth equalizing amplifiers whose inputs are connected to the first and second reproducing-recording heads, respectively, and fourth and fifth connecting their output ends to the first and second reproducing-recording heads, respectively. Double deck recorder with a recording time extension, characterized in that it comprises a six equalizer amplifier. The method of claim 2, The first channel selector includes a first channel switch connected between the first equalizer and the output amplifier, and a second channel switch connected between the second equalizer and the output amplifier. The second channel selector includes a third channel switch connected between the connection node of the third and fourth equalization amplifiers and the first channel switch, and the connection node of the fifth and sixth equalization amplifiers and the second channel switch. A fourth channel switch connected to the The third channel selector includes a fifth channel switch connected between an output end of the oscillator and the first erase head, and a sixth channel switch connected between an output end of the oscillator and the second erase head. Double deck recorder with extended recording time. The method of claim 3, wherein Each of the first and second channel switches selects an L channel as an output channel of the playhead unit when positioned at a first contact point, and selects an R channel as an output channel when positioned at a second contact point. If it is located at 3 contacts, select L channel and R channel as its output channel, Each of the third and fourth channel switches selects an L channel as an input / output channel of the playhead unit and the play-recording head unit when the third and fourth channel switches are positioned at the fourth contact point. R channel is selected as the output channel, and when it is located at the sixth contact point, L and R channels are selected as the input / output channels, The fifth and sixth channel switches respectively connect the first erase head and the oscillator for the L channel erase when positioned at the seventh contact point, and the second erase for the R channel erase when located at the eighth contact point. And connect the head and the oscillator and connect the first and second erase heads and the oscillator to cancel both the L channel and the R channel when located at the ninth contact point. Double deck recorder. The method of claim 4, wherein The first and second channel switches are configured to be identically moved / selected when the position movement / selection to the first to third contacts is performed, The third and fourth channel switches are configured to be identically moved / selected when moving / selecting to the fourth to sixth contact points, respectively. The fifth and sixth channel switches are double deck recorder having a recording time extension, characterized in that configured to move / select the same when the position movement / selection to the seventh to ninth contact. The method of claim 1, The erase head portion is separated from the first head surface of the first erase head in contact with the L track of the cassette tape and the second head surface of the second erase head in contact with the R track at a predetermined distance so that the L track of the cassette tape and A double-deck recorder with extended recording time, characterized in that it is configured to selectively cancel the magnetic signals recorded on the R track. The method of claim 1, A key panel unit including at least one selection key for selecting a connection channel of the first to third channel selection units; A second switch controller connected between the first to third channel selector and the key panel to control a switching operation of the first to third channel selector such that a corresponding channel is connected according to a key operation of the key panel; Double deck recorder with extended recording time, characterized in that additional configuration.