JPS63106902A - Tape sound-recording and reproducing device - Google Patents

Abstract

PURPOSE:To realize labor saving and time saving by providing a control part for sending adjustment value information to each adjustment value selecting part of each adjustment item corresponding circuit which has been selected and setting simultaneously an adjustment value to each adjustment item corresponding circuit. CONSTITUTION:When channel selecting information for selecting arbitrarily plural channels is inputted from an input part, a control part selects an arbitrary number of channels from among plural channels, based on this channel selecting information. Subsequently, item selecting information for selecting arbitrarily plural adjustment items of each channel which has been selected is inputted from the input part. As a result, the control part selects an arbitrary number of adjustment item corresponding circuits for executing an item adjustment from among each adjustment item corresponding circuit of each channel which has been selected. Also, when adjustment value information is inputted, the control part sends this information to each adjustment value selecting part provided on each adjustment item corresponding circuit of each channel which has been selected, and sets simultaneously an adjustment value to said each adjustment item corresponding circuit.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a tape recording/playback device having a plurality of recording/playback systems.

(Prior Art) In a tape recording/playback device, bias and recording level are necessary to operate it in an optimal state.

There are various adjustment items such as recording equalizer, playback level, and playback equalizer. In order to perform high-quality recording and playback, it is necessary that the various adjustment items described above are always adjusted to optimal conditions.

Particularly in the case of recording systems, it is common for the magnetic properties of these tapes to differ each time the tape (magnetic tape) is changed, so it is necessary to readjust various adjustment items.

By the way, some commercial tape recording and playback devices have 16 or 24 or more recording and playback channels, and such devices require a great deal of effort when adjusting the recording and playback systems for all channels. There is a problem in that it takes a long time.

For this reason, in the past, by incorporating a recording and reproducing circuit configured to be able to adjust each of the above-mentioned adjustment items using adjustment values that are digital values, and storing the adjustment values for several types of magnetic tape in advance, Attempts have also been made to shorten the adjustment time.

However, even tapes of the same type have slight differences in characteristics based on production lots, and especially in commercial equipment that requires precise adjustment, adjustment of the tape itself that is actually used is required. In the case of a device that does this, long-term adjustment work is required.

Regarding bias adjustment among adjustment items, by setting the main bias level in advance using a bias oscillator and distributing this low bias level to a multi-channel recording/playback circuit each having a sub-bias level adjustment function, the bias adjustment time can be reduced. Measures have been taken to shorten the time, but in this case only 5 bias adjustments can be applied.
Furthermore, there is a problem in that the main bias level and the sub bias level cannot be stored in memory.

(Problems to be Solved by the Invention) The present invention has been made in view of the above circumstances, and it is possible to simultaneously set the adjustment values for various adjustment items of a plurality of recording and playback systems to the optimum value, thereby saving labor. The object of the present invention is to provide a tape recording/playback device that can save time.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a tape recording and reproducing device equipped with a plurality of channels of recording and reproducing circuits each having a circuit corresponding to a plurality of adjustment items. An input section for inputting selectable channel selection information, item selection information that allows arbitrary selection of a plurality of adjustment items, and adjustment value information for each channel and item, and an adjustment section provided in each of the adjustment item corresponding circuits. The value selection section selects each channel to be adjusted and each adjustment item corresponding circuit based on the channel selection information and item selection information, and sends adjustment value information to each adjustment value selection section of each selected adjustment item corresponding circuit. and a control section that simultaneously sets adjustment values for the circuits corresponding to each adjustment item.

(Function) First, channel selection information for arbitrarily selecting multiple channels is input from the input section. Then, the control unit selects an arbitrary number of channels from among the plurality of channels based on this channel selection information.

Next, item selection information for arbitrarily selecting a plurality of adjustment items for each selected channel is input from the input section. Thereby, the control unit selects an arbitrary number of adjustment item corresponding circuits to perform item adjustment from among the adjustment item corresponding circuits of each selected channel.

Roughly speaking, when adjustment value information is input from the input section, the control section sends this information to each adjustment value selection section provided in each adjustment item corresponding circuit of each selected channel, and makes adjustments to each adjustment item corresponding circuit. Set values at the same time.

(Example) Examples of the present invention will be described below with reference to FIGS. 1 to 4.

The embodiment device shown in FIG. 1 includes four channel recording/reproducing circuits 1a to 1d, an input section 13 for inputting channel selection information, adjustment item information, adjustment value information, etc. to the six recording/reproducing circuits 1a to 1d. A control section 20 that controls each of the recording and reproducing circuits 1a to 1d based on various input information from the input section 13, and a storage section (non-volatile RAM
) 23.

Each of the recording and reproducing circuits 1a7'IJ to 1d and the storage section 23
is connected to the control section 20 by a data bus 40.

Further, a control bus 46 is provided between the storage section 23 and the control section 20.
is provided, and various information is exchanged between the control section 20 and the storage section 23 by sending control signals from the control section 20 to the storage section 23 via the control bus 46.

Roughly speaking, each of the recording and reproducing circuits 1a to 1d and the control section 20
An item bus 41 and four transmission buses 45 for transmitting channel selection information are provided between the two.

Here, an example of the recording system 50 provided in each of the recording/reproducing circuits 1a to 1d will be described with reference to FIG.

This recording system 50 includes an input amplifier circuit 3 that amplifies an input signal applied to an input terminal 2, a high frequency equalizer circuit 4 that performs high frequency equalization processing on the amplified signal, and an output signal of this high frequency equalizer circuit 4. a recording amplifier circuit 5 that amplifies the signal, a bias oscillator 7 that generates a bias signal in this recording system 50, a bias amplifier circuit 8 that amplifies this bias signal, and an output signal of this bias amplifier circuit 8 and the recording amplifier circuit 5. an adder 6 that enhances the output signal of the adder 6 and applies a predetermined bias to send it out; a recording head 9 connected to the output side of the adder 6; and one input terminal commonly connected to the channel selection bus 45. and the other input terminals are respectively connected to the item bus 41 to receive the recording equalizer signal,
Three AND circuits 42, 43, and 44 that take in each of the recording level and bias level signals, and the adjustment value selection section 60 provided in the high frequency equalizer circuit 4, the storage amplifier circuit 5, and the bias amplifier circuit 8, respectively. It is equipped with.

The data bus 40 is connected to adjustment value selection sections 60 provided in the high frequency equalizer circuit 4, the recording amplifier circuit 5, and the bias amplifier circuit 8, respectively.

Further, the output signal of the AND circuit 42 is sent to the adjustment value selection section 60 of the high frequency equalizer circuit 4 as a latch enable signal.
The output signal of the AND circuit 43 is recorded as a latch enable signal to the adjustment value selection section 60 of the amplifier circuit 5.
The output signals of 44 are respectively sent to the adjustment value selection section 60 of the bias amplifier circuit 8 as latch enable signals.

Here, an example of the adjustment value selection section 60 will be explained with reference to FIG. 3.

The adjustment value selection section 60 inputs a latch enable signal, and based on this input, a data latch section 11 that latches adjustment value information sent from the data bus 40 and will be described later, and an output signal of this data latch section 11. Based on input signal VIN
A multiply DAC (
(digital-to-analog converter) 10. As shown in FIG. 3, this multiply DAC 10 includes eight resistors R1 to Re connected in series, and each resistor R1.
A switch group 12 consisting of eight parallel resistors Rn to R+a connected between the rear stages of Rθ to Rθ and the ground, and eight switches SW1 to SWe arranged between these parallel resistors R1 to Rte and the ground. The output signal of the data latch unit 11 causes each switch SW1 to SW
By controlling s on and off, the adjustment value for the input signal VIN is selected. Here, the above configuration provides an 8-bit adjustment value, so a total of 25
Six different attenuation rates are obtained.

Next, the input section 13 will be explained with reference to FIGS. 1 and 4. FIG. 4 shows the operation panel 13 of this input section 13.
It shows a.

This input section 13 includes a channel selection switch section 14 consisting of four switches 30 to 33 corresponding to the front four channels and an all channel switch 34 indicating all channels, and a recording bias, recording equalizer, and recording level. Bias switch 25° for inputting item selection information; Recording equalizer switch 26. An item selection switch section 15 consisting of a recording level switch 27, a same value setting switch 282 for sending the same or individual adjustment value information, a mode selection switch section 16 consisting of an individual value selection switch 28, and a mode selection switch section 16 consisting of an individual value selection switch 28 for sending the same or individual adjustment value information. (UP)
or decrease (DOWN) Wheel 19. A rotary encoder 22 directly connected to this rotary wheel 19, a direction 1'lI separate circuit 2 for determining increase/decrease in the output signal of this 1''-tally encoder 22.
1, confirmation (SET) switch 17, and memory (S T
3) ORE switch 18.

Then, each of the switches is connected to the control section 20,
Further, a rotary engine T directly connected to the wheel 19
The output signal of the 1-da 22 is determined by the direction determining circuit 21, and every time the wheel 19 rotates by a certain angle in the direction shown in FIG. At each time, DOWN pulses are sent to the flll and lI control sections 20, respectively. In addition, each of the above-mentioned switches 2
5 to 27.28 degrees and 29.30 to 33 are respectively marked with 1FD35 as display means for accepting the pressed state.

The control unit 20 (as described in detail later) stores in advance a program having the contents shown in the flowcharts of FIGS. 5 to 9.

In the embodiment described above, the recording type 50 for each channel was explained, but it goes without saying that the playback system is actually provided with a similar configuration. Recycled yarn (, ``2'' is omitted.

Next, the effect of the above configuration at 1 step [Explanation-Lee 1]
゜In addition, the control unit 2 (H) accesses the storage unit 23 at any time, and
Should I adjust the back and forth of the 1-17 channels?
A circuit that adjusts the items to be adjusted such as the bias amplifier circuit 8 (hereinafter referred to as "adjustment item corresponding circuit").
It is possible to memorize which items on the back of the screen should be adjusted. Hereinafter, such a channel will be referred to as an adjustment channel, and the J and erotic eyes will be referred to as adjustment items hereinafter.

Further, the adjustment value refers to the value held in each data latch unit 11 of each A/channel and each adjustment item corresponding circuit, and the stored value refers to the value stored separately in the storage unit 23 by pressing the recorder switch 18. shall mean the adjustment value for -, respectively.

Next, the operation of this device, as well as the processing routine based on the program stored in the control section 20, will be explained with reference to FIGS. 5 to 9.

First, when the N source is turned on, an initialization routine whose details are shown in FIG. 6 is executed (ST101). In other words, after turning on the power, the adjustment values for all channels and all items are set to 11b.
Assign the stored value and make this the specified value (ST102>
. Next, this specified value is set as S in the data latch section 11 of the circuit corresponding to all channels and all adjustment items (ST103). Therefore, the control section 20 can determine the specified value of each data latch section 11. Next, the control unit 20 determines whether the adjustment channel or adjustment item is 5T104) and moves to step 110.

Next, the control unit 20 reads the pressed state of the channel selection switch unit 14, and if any of the switches 30 to 34 or the all channel switch 34 is pressed, the process proceeds to step 111; if not, the process proceeds to step 111. Move to 120 (STIIO). Step 111 shows the adjustment channel setting routine as shown in detail in FIG. 7. First, it is determined that there is no adjustment channel, and then (ST112)
, the pressed state of the channel selection switch section 14 is read (ST113), and the pressed state of the channel selection switch section 14 is read (ST113).
If the switch is 4, the process goes to switch 115, and if it is any other switch, the process goes to step 116 (ST114).

In step 115, the A channel is adjusted as the channel, and the process moves to step 117.

On the other hand, the channel 116 uses the channel read in step 113 as the adjustment channel i7.

Next, the control unit 20 adjusts the hair/neckline in step 116 or in step 115.
Turn on the corresponding LED 35 of channel 7 (ST11
7). Next, if the confirmation switch 17 is pressed, the process moves to step 120, and if it is not pressed, the process returns to step 120. In this way, the adjustment channel 5 in step 111
You can set any number (single or multiple) channels as adjustment channels.

Next, step 120 is executed. In other words, the control unit 20! , if the pressed state of the i item selection switch section 15@read, any one of the switches 25 to 27 is pressed, step 12 is shown in detail in FIG.
1, and if the button has not been pressed, the process moves to step 130.

In the item setting routine of step 121, the pressed state of each switch 25 to 27 of the item selection switch section 15 is read, and if there is a pressed switch, the corresponding item is set as an adjustment item (designated item) (ST122).

Next, the control unit 20 turns on the LED 35 corresponding to the switch set as the adjustment item in step 121 (5T123).
, roughly, if the confirmation switch 17 is pressed, step 1
Proceed to step 30, and if it is not pressed, return to step 122 (
ST124>. In this way, the item set routine shown in step 121 allows adjustment items to be arbitrarily selected for each adjustment item corresponding circuit.

Next, the control unit 20 reads the pressed state of each switch 28, 29 of the mode selection switch unit 16 (ST130),
If either switch 28 or 29 is pressed, the ninth
The process moves to the mode set routine of step 131, details of which are shown in the figure, and if the button has not been pressed, the process moves to step 140.

In the mode set routine of step 131, the control unit 20 first reads the pressed state of each of the switches 28 and 29 and sets the content (same value setting or individual value selection) corresponding to the pressed switch to the adjustment mode (designated mode). 5T132), roughly turn on the LED 35 corresponding to the switch corresponding to the specified mode (ST1
33).

After that, if the confirmation switch 17 is pressed, step 14
If the button is not pressed, the process returns to step 132.

Next, it is determined whether there is an adjustment target (ST140),
If not, return to step 110; if there is, return to step 150
Move to. Then, if the confirmation switch 17 for reconfirming the adjustment channel and adjustment mode set in each routine described above is pressed, the process moves to step 160, and if it is not pressed, the process returns to step 110 (150).

Next, it is determined whether the adjustment mode is the same value setting mode or the individual value selection mode. If the adjustment mode is the same value setting mode, the process moves to step 161; otherwise, the process moves to step 170. In step 171, the adjustment values to be adjusted are all set to the same value (for example, zero) and the process moves to step 170.

Next, if the UP pulse is output from the direction discrimination circuit 21, the process moves to step 171, and if it is not output, step 18
Move to 0 (ST170) u Then, if the UP pulse is output, add 1 to each of the adjustment values of the adjustment target (5T171), and if the UP pulse is not output, check whether it is the DOWN pulse or not. is determined (ST180)
. At this time, if it is not a DOWN pulse, the adjustment value to be adjusted is subtracted by 1 (S-r181). Then, the adjustment values added or subtracted in ST171 and 5T181 are set in the data latch section 11 (ST1
75), and then moves to step 190.

Next, the state of the write switch 18 is read, and if it has been pressed, the process moves to step 191; if it has not been pressed, the process moves to step 200. In step 191, the adjustment value for the adjustment target is stored in the storage unit 23 as a storage value (designated value), and then the process moves to step 200.

Next, if the confirmation switch 17 is not pressed, the process returns to step 170, and the rotation of the wheel 19 is adjusted again to increase or decrease the adjustment value. On the other hand, if the confirmation switch 17 has been pressed or turned down, the adjustment is to be made again.

The process returns to step 110 to change the adjustment mode.

Next, the operation of adjusting the recording level of all channels in this apparatus based on the routine described above will be described below as a typical example of the operation of this apparatus.

First, set the adjustment target after turning on the power. First, to perform rough adjustment, the all-channel switch 34 is pressed, and after confirming that the LEDs 35 corresponding to each switch 30 to 34 are lit, the confirmation switch 17 is pressed.

Next, press the recording level switch 27 and turn on the corresponding LED 3.
After confirming that 5 is lit, press the confirmation switch 17.

Roughly press the same value setting switch 28 and set the corresponding LE.
After confirming that D35 is lit, the confirmation switch 17 is pressed again.

Through the above operations, steps 110 and 111 shown in FIG.
．． 120, 121, 130, 131°140 are executed.

Then, when the confirmation switch 17 is pressed again, steps 150, 160, and 161 are executed, and the data latch section 11 in each recording amplifier circuit 5 of all channels
The adjustment values set to will be the same value.

Here, a sine wave signal of, for example, 1 Ktlz and a reference level is input to the input terminal 2 to set the recording state, and at this time, the wheel 19 is rotated so that the reproduced signal becomes the reference level. In this state, the adjustment value is the same value for all channels, but there is some variation in each recording amplifier circuit 5 of each channel, so fine adjustment is required. In such a case, the confirmation switch 17 is pressed. Then,
Step 110 is performed again based on the determination made in step 200.
Just go back and set the adjustment target that requires fine adjustment again.

For example, if fine adjustment is required for the three-channel recording amplifier circuit 5, the adjustment target can be limited to only three channels by pressing the three-channel switch 32 and the individual selection switch 29.

On the other hand, there may be cases where adjustment is complete, or fine-tuning is required only for specific multiple channels.

For example, assume that fine adjustment is made to each height 1 or equalizer circuit 4 of the first channel and the second channel. It is assumed that the adjustment values for the high frequency equalizer circuit 4 of each of these channels are set to different values in advance.

In this case, when the switch 30.31 is pressed, 1
．． 2 channel is specified, the recording equalizer switch 26 is pressed to set the adjustment item to the recording equalizer, and the individual value selection switch 29 is pressed to set the adjustment mode to the individual adjustment mode. By setting the adjustment target and adjustment mode in this way, the adjustment value preset in the data latch section 11 in the high frequency equalizer circuit 4 of both channels can be added or subtracted by the same value to obtain a new adjustment value. After the original adjustment is completed, it is possible to make fine adjustments to multiple specific channels at the same time.

It goes without saying that the bias adjustment of each channel in the above case can also be performed under the same operation as described above.

The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the invention.

For example, in the embodiment described above, each recording system 5 of the 4-channel V channel
Although the case where the present invention is applied to 0 channels has been described, the present invention is not limited to this, and can be applied to devices having an arbitrary number of channels, and also to playback systems.

[Effect of the Invention 1] According to the present invention detailed above, for a plurality of adjustment item corresponding circuits respectively provided in arbitrary plurality of channels,
It is possible to provide a tape recording ifj production device that can arbitrarily set channels to be adjusted, adjustment items, and adjustment values in a short time with simple operations, and can save labor and time.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a device according to an embodiment of the present invention, FIG. 2 is a block diagram showing a recording system in the same device, FIG. 3 is a block diagram showing an adjustment value selection section in the same device, and FIG. 4 is a block diagram showing the same device. The plan view showing the operation panel of the device, and FIGS. 5 to 9 are flowchart 1 notes showing the processing routine in the device, respectively. 1a to 1d... Recording ■ Main circuit, 13... Input section,
14... Channel selection switch section, 15... Item selection switch section, 16... Mode selection switch section, 20... Control section,
23... Storage section, 50... Recording system, 60... Adjustment value selection section.

Claims (3)

[Claims] (1) In a tape recording/playback device equipped with a recording/playback circuit of multiple channels each having a circuit corresponding to a plurality of adjustment items, channel selection information that allows the plurality of channels to be arbitrarily selected, and a plurality of adjustment items that can be arbitrarily selected. An input section for inputting item selection information and adjustment value information for each item of each channel, an adjustment value selection section provided in each adjustment item corresponding circuit, and each channel to be adjusted based on the channel selection information and item selection information. , a control section that selects each adjustment item corresponding circuit and simultaneously sets adjustment values for each adjustment item corresponding circuit by sending adjustment value information to each adjustment value selection section of each selected adjustment item corresponding circuit. A distinctive tape recording and playback device. (2) The tape recording and reproducing apparatus according to claim 1, wherein the adjustment items are selected from bias, recording level, recording equalizer, playback level, playback equalizer, and the like. (3) The setting of the adjustment value by the control unit is performed by simultaneously changing the adjustment items of each channel to the same value or by changing the once set value to another value at the same time. The tape recording and reproducing device according to item 1 or 2.