JPH0353716B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronically controlled recording and reproducing apparatus that has a common operating section for recording level adjustment and output level adjustment.

BACKGROUND ART Recording and reproducing apparatuses such as tape recorders and VTRs are provided with operation buttons for setting operation modes, volume knobs for level adjustment, various switches, etc. on their front panels. In recent years, conventional mechanical push buttons, volume controls, and switches are being replaced by electronic switches and electronic volume controls using semiconductors. These electronic switches, electronic volume, etc. are controlled via a microcomputer based on input information from a non-lock type switch such as a touch switch.

An example of a tape deck that performs such electronic control is shown in FIG.

This tape deck is designed so that all operations are performed using a touch switch, and a touch switch (in the following explanation, the touch part of this touch switch will be referred to as a button) with various functions is arranged on the front panel 1. There is. The front panel 1 is also provided with a cassette mounting section 2, display sections 3 and 4, and the like.

As a touch switch, REC (record) button 5,
FWD (forward) button 6, FF (fast forward) button 7,
RWD (rewind) button 8, STOP button 9, PAUSE button 1
0, RECMUTE button 11, and other mode setting buttons are provided, as well as a recording level up button 12, a recording level down button 13, an R channel balance button 14, an L channel balance button 15, and an output level up button 16. , an output level down button 17 is provided. Note that the recording level is displayed on the display unit 4, and the reproduction level is displayed on the plurality of light emitting diodes 18. Further, the channel balance is displayed by a plurality of light emitting diodes 19. In addition, buttons for various functions such as power switch, memory, timer, tape selection, check, etc. are arranged, and each button is provided with a light emitting diode for display as required.

However, the following problems occur in devices that are electronically controlled in this way.

For example, if you consider a conventional round volume knob, you can raise or lower the volume just by turning the volume knob, but if you use a non-lock switch, you can turn the volume up or down, respectively. Therefore, the number of switches increases. Furthermore, it is not possible to tell what state the device is currently in based on the input information from the non-lock switch just by looking at the switch itself. For this reason, some kind of suggestion device corresponding to each switch is required. Therefore, the number of display elements such as light emitting diodes increases. Furthermore, as the number of switches and display elements increases, their arrangement and operation become complicated, and the number of wires for internal wiring increases, leading to an increase in costs.

The present invention has been made in view of the above-mentioned circumstances, and an embodiment in which the present invention is applied to the tape deck shown in FIG. 1 will be described below with reference to the drawings.

In this embodiment, the recording level up and down buttons 12 and 13 and the output level up and down buttons 16 and 17 in FIG. 1 are shared, and a recording level display and a playback level display are also displayed. This is done selectively in section 4. Therefore, in this embodiment, the buttons 12 and 12 in FIG.
13 or 16 and 17 are omitted, and the light emitting diode 18 is also omitted. The recording level and playback level are each adjusted by dedicated electronic volumes. When level adjustment is performed using a common button as described above, which electronic volume is to be adjusted is determined by the state in which the mode setting buttons 5 to 11 are pressed. That is, the operating modes are divided into a REC type mode and a PB (playback) type mode, and the electronic volume is selected according to each type of mode. Here are some examples of each mode: REC mode...REC, REC/FWD, REC/
FWD・PAUSE, REC・PAUSE,
PAUSE.

PB mode...STOP, FWD, RWD, FF,
FWD・PAUSE.

In this example, tape recorders generally play back more than they record, so STOP, FF,
REW etc. are available as PB mode. Also, when checking or adjusting the recording level before recording,
If the REC button 5 is pressed, an input signal will be input, so in order to make it possible to perform the above confirmation or adjustment with only the PAUSE button 10 pressed in advance, PAUSE is set to the REC mode. Note that the mode classification method described above is an example, and various other classification methods may be used.

FIG. 2 shows an example of a circuit block for realizing the above embodiment.

During recording, the signal S _R applied to the input terminal 20
After the level is adjusted by the recording level adjustment electronic volume 21, the recording amplifier 22 and the recording/playback switch 2
3 to the recording/reproducing head 24 and recorded on the tape 25. When monitoring, the level-adjusted signal is output as a monitor signal from the output terminal 28 through the source side contact of the switch 26 and the playback level adjustment electronic volume 27.
It is output as S′ _R.

During this recording, the computer 30 determines whether a button belonging to the REC mode on the operation section 29 is pressed. In response to this, the tape running mechanism 31 is set to the instructed mode, and the volume 21 becomes operable.

When the level adjustment button 12 or 13 is pressed in this state, the computer 30 sends control data to the decoder 32, which converts it into a control voltage V _CR and adds it to the volume 21. As a result, the recording level is increased or decreased, and the recording level is displayed on the display section 4. In addition, as shown in the figure, a display section 4a is provided to display whether the PB is currently in the REC mode or not.
It may also be possible to display whether it is in system mode.

During reproduction, the signal reproduced from the tape 25 by the head 24 is sent to the volume 2 through the switch 23, the reproduction amplifier 33, and the tape contact of the switch 26.
7 and the reproduction level is adjusted, the signal is outputted to the output terminal 28 as an output signal S _p .

During this playback, the pressed state of the button belonging to the PB mode on the operation section 29 is the state in which the computer 3
It is judged as 0. In response to this, the tape running mechanism 31 is set to the specified mode, and the volume 27 becomes operable.

When the level adjustment button 12 or 13 is pressed in this state, the computer 30 sends control data to the decoder 34, which converts it into a control voltage V _cp and applies it to the volume 27. As a result, the playback level is increased or decreased, and the playback level is displayed on the display section 4. Note that the memory 35 always stores the recording level and the reproduction level, and is rewritten when there is a change. When the REC mode is switched to the PB mode or vice versa, the data is immediately read out and the volume 21 or 27 is adjusted to the previously set value. Therefore, the monitor level during recording is adjusted to the level held by the volume 27, but since it is also adjusted by the subsequent amplifier, there is no problem in practical use.

FIG. 3 shows a flowchart of the computer 30 that performs the above operations.

First, in step 41, it is determined whether the mode setting buttons 5 to 11 on the operation section 29 are set to the REC mode or the PB mode.
If you are in REC mode, step 42
Data indicating the recording level is read from the memory 35, and the value is displayed on the display section 4, and the volume 21 is controlled via the decoder 32.

In this state, if there is an instruction to increase the recording level using the push button 12, this is determined in step 43.
Then, in step 44, the display value and the recording level of the memory 35 are increased, and the volume 21 is controlled in the upward direction. Furthermore, if there is an instruction to lower the recording level using the push button 13 at step 42, this is determined at step 44, and at the next step 45, the displayed value and the recording level in the memory 35 are decreased, and the volume 21 is controlled in the down direction. do.

If the mode setting buttons 5 to 11 on the operation section 29 are set to the PB mode in step 41, the memory 3 is set in step 46.
5 reads out data indicating the playback level, displays that value on the display section 4, and also reads the data from the decoder 34.
The volume 27 is controlled via.

In this state, if there is an instruction to increase the playback level using the push button 12, this is determined in step 47.
Then, in step 48, the display value and the playback level in the memory 35 are increased, and the volume 27 is controlled in the upward direction. If there is an instruction to lower the playback level using the push button 13 at step 46, this is determined at step 49, and at the next step 50, the displayed value and the playback level in the memory 35 are decreased, and the volume 27 is controlled in the down direction. do.

As described above, the present invention provides an electronically controlled recording level adjustment means (for example, an electronic volume
1), an electronically controlled output level adjustment means (e.g., electronic volume 27), and an operation means (e.g., buttons 12, 13) for commonly electronically controlling the two level adjustment means, The present invention relates to a recording/reproducing apparatus in which one of the two level adjusting means is selected depending on the operation mode, and the control by the operating means is possible.

Therefore, according to the present invention, it is possible to reduce the number of switches in a recording/reproducing apparatus in which the electronic volume and the like are controlled based on input information from a non-lock type switch. Furthermore, it is also possible to display the recording level and the output level (playback level, monitor level, etc.) on a common display section based on the information for selecting the two level adjustment means.

[Brief explanation of drawings]

FIG. 1 is an external perspective view of a tape deck to which the present invention can be applied, FIG. 2 is a circuit block diagram showing an embodiment of the present invention, and FIG. 3 is a flowchart of the computer shown in FIG. 2. In addition, in the symbols used in the drawings, 12...
Level up button, 13...Level down button,
21, 27...electronic volume, 29...operation unit, 30...computer.

Claims (1)

[Claims] 1. Electronically controlled recording level adjustment means;
It is equipped with an output level adjustment means that is electronically controlled and an operation means that electronically controls the two level adjustment means in common, and one of the two level adjustment means is selected according to the operation mode. A recording/reproducing device configured to be able to be controlled by the operating means described above.