JP2006085828A - Recording/reproducing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording/reproducing device capable of performing recording from both of a built-in remote controller microphone and an external microphone. <P>SOLUTION: A remote controller 11 is connected to a first input terminal 5, and an external microphone 14 is connected to a second input terminal 6. An audio signal from a microphone 13 incorporated in the remote controller 11 passes through the first and second input terminals 5 and 6 to be recorded in a mini disk 1 by a recording part 4. An audio signal from the external microphone 14 passes through the second input terminal 6 to be recorded in the mini disk 1 by the recording part 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a recording / playback apparatus capable of microphone recording.

  As a conventional portable recording / reproducing apparatus having a recording function, there is known a device that is provided with a microphone-dedicated terminal on the main body and connected to an external microphone for recording. Since it is an external microphone, it is possible to prevent the microphone from picking up the operation sound of the mechanism of the main body and the operation sound of the main body button.

However, the portable recording / reproducing apparatus described above needs to carry an external microphone. Patent Document 1 discloses an invention in which a microphone for transmission is provided on a remote controller of a portable device in which a portable acoustic device and a cellular phone are integrated. Based on the present invention, a method of incorporating a microphone in the remote controller of the recording / playback apparatus is conceivable. With this method, there is no need to carry an external microphone, and microphone recording can be performed anywhere.
JP-A-5-91584

  However, although it is not necessary to carry an external microphone in the method using the microphone built in the remote controller, the sound quality is low, so that recording with high sound quality that is possible with an external microphone is impossible. In addition, if a microphone is built in the remote control, the operation sound from the remote control is picked up, so that the remote control cannot be used.

  In view of the above problems, an object of the present invention is to provide a recording / reproducing apparatus capable of recording from both a remote control built-in microphone and an external microphone.

  In order to achieve the above object, a recording / reproducing apparatus of the present invention includes a reproducing means for reproducing an audio signal recorded on a recording medium, and a recording means for recording an audio signal received from the outside on the recording medium. A first remote controller capable of being connected to a remote controller for transmitting the reproducing means and a control signal for operating the recording means from outside the recording / reproducing apparatus to the recording / reproducing apparatus. A first input terminal for receiving an audio signal from a microphone, and a second input terminal for receiving a second microphone different from the first microphone and receiving an audio signal from the second microphone; And the recording means receives an audio signal from at least one of the first input terminal and the second input terminal and receives the audio signal on the recording medium. Characterized by recording the items (hereinafter, referred to as the configuration as the first configuration).

  According to such a configuration, recording from both the remote control built-in microphone and the external microphone is possible.

  The recording / reproducing apparatus of the present invention is the recording / reproducing apparatus having the first configuration, wherein the remote control or the second microphone is connected to the first input terminal or the priority input terminal that is the second input terminal. A blocking means for blocking an audio signal from the input terminal that is not the priority input terminal of the first input terminal or the second input terminal to the recording means (hereinafter referred to as the present invention). The configuration is referred to as a second configuration).

  According to such a configuration, even when both a microphone with a built-in remote control and an external microphone are connected to the recording / playback device, recording from a preferred microphone (either a microphone with a built-in remote control or an external microphone) is automatically selected. Therefore, the user does not need to perform an operation of selecting a microphone, and usability is improved.

  The recording / reproducing apparatus of the present invention is the recording / reproducing apparatus having the second configuration, wherein the priority input terminal includes a first R channel terminal and a first L channel terminal electrically connected to the recording means. An input terminal that is not the priority input terminal of the first input terminal or the second input terminal is electrically connected to the first R channel terminal; and A second L-channel terminal electrically connected to the first L-channel terminal, and when the remote control or the second microphone is connected to the priority input terminal, the blocking means is the first R The electrical connection between the channel terminal and the second R channel terminal and the electrical connection between the first L channel terminal and the second L channel terminal are cut off. That.

  According to such a configuration, even if both the remote control built-in microphone and the external microphone are connected to the recording / playback device, both the remote control built-in microphone and the external microphone are not electrically connected to the same microphone amplifier. It is possible to eliminate the effect of noise level drop and unnecessary noise.

  With the recording / reproducing apparatus of the present invention, recording from both a remote control built-in microphone and an external microphone is possible.

  FIG. 1 shows a schematic configuration of a portable MD (minidisc) recording / reproducing apparatus according to an embodiment of the present invention. However, the solid line arrow in FIG. 1 indicates the flow of the audio signal, and the dotted line arrow indicates the flow of the control signal.

  The recording / reproducing apparatus 2 is a main body of the portable MD recording / reproducing apparatus, and includes a reproducing unit 3, a recording unit 4, a first input terminal 5, a second input terminal 6, a control unit 7, and an operation unit 8. A remote control 11 can be connected to the first input terminal 5 by inserting a remote control plug 9, and an external microphone 14 can be connected to the second input terminal 6 by inserting an external microphone plug 10. The remote controller 11 includes an operation unit 12 and a built-in microphone 13, and a headphone 15 is connected to the outside.

  At the time of reproduction, the reproduction unit 3 reads the audio signal recorded on the mini-disc 1 that is a recording medium, and the read audio signal is output as sound through the first input terminal 5, the remote control plug 9, and the remote control 11 through the headphones 15. Is output.

  During recording, an audio signal input from the built-in microphone 13 of the remote controller 11 to the first input terminal 5 via the remote control plug 9 or input from the external microphone 14 to the second input terminal 6 via the external microphone plug 10. The recording unit 4 records the audio signal on the mini disk 1. The audio signal input to the first input terminal 5 is input to the recording unit 4 via the second input terminal 6 as described later.

  The recording / reproducing operation is performed using the operation buttons of the recording / reproducing apparatus 2 or the remote controller 11. When the user depresses the operation button of the recording / reproducing apparatus 2, the operation unit 8 of the recording / reproducing apparatus 2 detects the recording / reproducing operation and transmits a control signal to the control unit 7, which controls the reproducing unit 3 and the recording unit. 4 is used for recording and reproduction. When the user presses the operation button on the remote controller 11, the operation unit 12 of the remote controller 11 detects a recording / reproducing operation and transmits a control signal to the control unit 7 via the first input terminal 5. Recording and reproduction are performed using the reproduction unit 3 and the recording unit 4.

  2 to 4 show peripheral circuit diagrams of the first input terminal 5 and the second input terminal 6 related to microphone recording. The difference between FIGS. 2 to 4 is the insertion pattern of the remote control plug 9 and the external microphone plug 10.

  The first input terminal 5 includes a remote control plug insertion detection terminal 23, a ground terminal 24, a remote control built-in microphone L channel terminal 25, and a remote control built-in microphone R channel terminal 26. A remote control plug 9 can be inserted into the first input terminal 5. Each terminal is fixed by a pin fixing material 27.

  The second input terminal 6 includes an external microphone plug insertion detection terminal 16, a ground terminal 17, an external microphone L channel terminal 18, and an external microphone R channel terminal 19. An external microphone plug 10 can be inserted into the second input terminal 6. Each terminal is fixed by a pin fixing material 22.

  The L channel terminal connection pin 20 is in contact with the external microphone L channel terminal 18 so that the external microphone L channel terminal 18 and the remote control built-in microphone L channel terminal 25 are electrically connected. The L channel terminal connection pin 20 is fixed by a pin fixing material 22.

  The R channel terminal connection pin 21 is in contact with the external microphone R channel terminal 19, thereby electrically connecting the external microphone R channel terminal 19 and the remote control built-in microphone R channel terminal 26. The R channel terminal connection pin 21 is fixed by a pin fixing material 22.

  A current flows through the external microphone plug insertion detection pull-up resistor R1 and the remote control plug insertion detection pull-up resistor R2 when each plug is inserted into each terminal. Therefore, by detecting this current, each plug can be inserted. It can be detected.

  FIG. 2 shows a state where the remote control plug 9 is not inserted into the first input terminal 5 and the external microphone plug 10 is not inserted into the second input terminal 6. In this case, recording is performed by another recording system such as line input and optical input.

  FIG. 3 shows a state where the remote control plug 9 is inserted into the first input terminal 5 and the external microphone plug 10 is not inserted into the second input terminal 6. In this case, since the L channel terminal connection pin 20 is in contact with the external microphone L channel terminal 18, the L channel audio signal of the built-in microphone 13 of the remote control 11 input from the remote control plug 9 is the remote control built-in microphone L channel. The direct current component is cut by the L channel DC cut capacitor C 1 through the terminal 25 for the external microphone and the external microphone L channel terminal 18, amplified by the L channel microphone amplifier 28, and recorded on the mini disk 1 by the recording unit 4.

  Further, since the R channel terminal connection pin 21 is in contact with the external microphone R channel terminal 19 (see FIG. 5A), the R channel audio signal of the built-in microphone 13 of the remote controller 11 input from the remote control plug 9 is used. Passes through the remote control built-in microphone R channel terminal 26 and the external microphone R channel terminal 19, the DC component is cut by the R channel DC cut capacitor C 2, amplified by the R channel microphone amplifier 29, and mini-recorded by the recording unit 4. Recorded on the disc 1.

  Further, power is supplied from the power source 30 to the built-in microphone 13 of the remote control 11 via the remote control plug 9 from the line through which the audio signal passes through the L channel microphone power supply pull-up resistor R3 and the R channel microphone power supply pull-up resistor R4. Supplied.

  FIG. 4 shows a state where the remote control plug 9 is inserted into the first input terminal 5 and the external microphone plug 10 is inserted into the second input terminal 6. As shown in FIG. 5B, in the state where the external microphone plug 10 is inserted in the second input terminal 6, the external microphone R channel terminal 19 is bent by contact with the external microphone plug 10, and the external microphone R The channel terminal 19 and the R channel terminal connection pin 21 are not in contact with each other. The same applies to the L channel. Accordingly, the electrical connection between the external microphone L channel terminal 18, the remote control built-in microphone L channel terminal 25, the external microphone R channel terminal 19, and the remote control built-in microphone R channel terminal 26 is cut off, and the remote control plug 9 is connected. The power supply to the built-in microphone 13 of the remote control 11 and the audio signal of the built-in microphone 13 of the remote control 11 input from the remote control plug 9 are cut off.

  The L channel audio signal of the external microphone 14 input from the external microphone plug 10 passes through the external microphone L channel terminal 18, the DC component is cut by the L channel DC cut capacitor C 1, and is amplified by the L channel microphone amplifier 28. Then, it is recorded on the mini disk 1 by the recording unit 4.

  Further, the R channel audio signal of the external microphone 14 input from the external microphone plug 10 passes through the external microphone R channel terminal 19, the direct current component is cut by the R channel DC cut capacitor C 2, and the R channel microphone amplifier 29. And is recorded on the mini-disc 1 by the recording unit 4.

  Further, power is supplied from the power source 30 to the external microphone 14 via the external microphone plug 10 from the line through which the audio signal passes through the L channel microphone power supply pull-up resistor R3 and the R channel microphone power supply pull-up resistor R4. The

  In the above embodiment, when the external microphone and the remote control are connected simultaneously, the external microphone is prioritized so that the audio signal from the built-in microphone of the remote control is cut off and the audio signal from the external microphone is recorded. If the first input terminal 5 and the second input terminal 6 are reversed, the built-in microphone of the remote control can be given priority.

These are figures which show schematic structure of a portable MD recording / reproducing apparatus. FIG. 4 is a peripheral circuit diagram of a first input terminal and a second input terminal related to recording (in the case where neither an external microphone plug nor a remote control plug is inserted). These are the peripheral circuit diagrams of the 1st input terminal regarding a recording, and the 2nd input terminal (when only a remote control plug is inserted). FIG. 4 is a peripheral circuit diagram of a first input terminal and a second input terminal related to recording (when both an external microphone plug and a remote control plug are inserted). These are figures which show the structure of the R channel signal switching part of a 2nd input terminal.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Minidisc 2 Recording / reproducing apparatus 3 Reproduction | regeneration part 4 Recording part 5 1st input terminal 6 2nd input terminal 7 Control part 8 Operation part 9 Remote control plug 10 External microphone plug 11 Remote control 12 Operation part 13 Built-in microphone 14 External microphone 15 Headphone 16 External microphone plug insertion detection terminal 17 Ground terminal 18 External microphone L channel terminal 19 External microphone R channel terminal 20 L channel terminal connection pin 21 R channel terminal connection pin 22 Pin fixing material 23 Remote control plug insertion detection terminal 24 Ground terminal 25 Remote control built-in microphone L channel terminal 26 Remote control built-in microphone R channel terminal 27 Pin fixing material 28 L channel microphone amplifier 29 R channel microphone amplifier 30 Power supply R1 External microphone plug insertion detection plug Pull-up resistor R2 Remote control plug insertion detection pull-up resistor R3 L-channel microphone power supply pull-up resistor R4 R-channel microphone power supply pull-up resistor C1 L-channel DC cut capacitor C2 R-channel DC cut capacitor

Claims (3)

A recording / reproducing apparatus comprising: reproducing means for reproducing an audio signal recorded on a recording medium; and recording means for recording an audio signal received from the outside on the recording medium,
An audio signal from a first microphone provided in the remote controller, to which a remote controller for transmitting the reproducing means and a control signal for operating the recording means can be connected from the outside of the recording / reproducing apparatus to the recording / reproducing apparatus. And a second input terminal that can connect an audio signal from the second microphone, the second input terminal being connectable to a second microphone different from the first microphone, A recording / reproducing apparatus, wherein the recording means receives an audio signal from at least one of the first input terminal and the second input terminal and records the audio signal on the recording medium.   When the remote control or the second microphone is connected to a priority input terminal that is the first input terminal or the second input terminal, the priority input of the first input terminal or the second input terminal 2. The recording / reproducing apparatus according to claim 1, further comprising a blocking unit configured to block an audio signal from the non-terminal input terminal to the recording unit. The priority input terminal includes a first R channel terminal and a first L channel terminal electrically connected to the recording means, and the priority input of the first input terminal or the second input terminal. The non-terminal input terminal is a second R channel terminal electrically connected to the first R channel terminal and a second L channel terminal electrically connected to the first L channel terminal. With
When the remote control or the second microphone is connected to the priority input terminal, the blocking means connects the first R channel terminal to the second R channel terminal and the first L channel terminal. 3. The recording / reproducing apparatus according to claim 2, wherein an electrical connection between the channel terminal and the second L channel terminal is cut off.

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