JP2001057008A - Signal processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a signal processor capable of performing precise operations in accordance with an input signal when the input signal is inputted in a short cycle. SOLUTION: A signal processor 100 has first and second control means 51, 52. The first control means 51 has a counting means 56 counting the input signal S11 being in a first state to perform an input-output control. The second control means 52 becomes a power-ON state based on the input signal S11 being in the first state and also supplies a power to a control object 60 and it becomes a power-OFF state together with the control object 60 based on the input signal S11 being in a second state. Moreover, the means 52 has a counting means 57 counting power-ON states and when the input signal S11 being in the first state is supplied to the second control means 52 being in the power-OFF state, the counting means 57 resets the count value of the means 56. When count values of the means 56, 57 coincide, the means 52 supplies the power to the control object 60.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a signal processing device for executing a predetermined operation based on an input signal.

[0002]

2. Description of the Related Art When a predetermined input signal is input to a device, an elapsed time until the device starts operating in response to the input signal is called an attack time (operation start time).
On the other hand, when a predetermined input signal is input to the device, an elapsed time until the device stops operating in response to the input signal is called a recovery time (operation stop time).

For example, when power is turned on to a signal processing device in a power-off state, when an input signal instructing power-on is input to the signal processing device by operating an operation switch of the signal processing device, after a predetermined attack time, The signal processing device is turned on. Further, when the power of the signal processing device in the power-on state is turned off, when an input signal for instructing power-off by operating the operation switch of the signal processing device is input to the signal processing device, after a predetermined recovery time, the signal processing device becomes The power turns off.

[0004]

With respect to the input signal,
It may be required that the signal processing device immediately reacts and performs a predetermined operation. However, the shortest cycle in which the input signal is input may be shorter than the shortest cycle in which the signal processing device performs the predetermined operation. For example, when the operator instructs the signal processing device to perform a predetermined operation with an operation switch, the signal processing device is immediately turned on and starts the operation, but when the signal processing device is instructed to stop operating. In some cases, the power of the signal processing device is not turned off immediately, but is turned off after a predetermined delay time to stop the operation.

In such a case, if the operation switch is repeatedly hit, it is difficult for the signal processing device to perform an operation corresponding to the operation of the operation switch, and the signal processing device may perform an improper operation. Furthermore, when the signal processing device has a display device that performs display according to the operation of the operation switch, there is a possibility that an incorrect display based on the previous switch operation may be performed instead of the display based on the current switch operation. . An object of the present invention is to provide a signal processing device capable of performing an accurate operation according to an input signal when the input signal is input in a short cycle.

[0006]

A signal processing apparatus according to the present invention comprises a first counting means for counting an input signal in a first state, and a first operation based on the input signal in the first state. And a second control for performing a second operation based on the input signal in a first state, and stopping the second operation based on the input signal in a second state. Means,
A second counting unit for counting the execution of the second operation, wherein the input signal in the first state is supplied to the second control unit that is stopping the second operation; The first
And a second counting means for setting a count value of the counting means, wherein the second control means sets the second count value when the count values of the first and second counting means coincide with each other. Perform the operation.

In the signal processing device according to the present invention, preferably, the signal processing device further includes a memory for updating storage data in accordance with a count value of the first counting means,
The first and second control means access the stored data in the memory.

In the signal processing device according to the present invention, preferably, the first control means performs the first operation when the count values of the first and second counting means match.

In the signal processing device according to the present invention, preferably, the shortest period from when the input signal changes to the first state to when the input signal changes to the first state through the second state is the second cycle. Is shorter than the shortest period from when the control means performs the second operation to when the second operation is stopped and the second operation is performed again.

[0010] In the signal processing device according to the present invention, more preferably, the time from when the input signal in the first state is input to the signal processing device to when the second control means performs the second operation. The elapsed time is determined by the second control unit after the input signal in the second state is input to the signal processing device.
Is shorter than the elapsed time until the operation stops.

In the signal processing device according to the present invention, for example,
The signal processing device is a recording and reproducing device for recording or reproducing information by irradiating a magneto-optical recording medium with laser light,
The input signal is generated by an operation switch of the recording / reproducing device, and the input signal has a first state instructing recording or reproduction of the information or a second state instructing stop of recording or reproduction of the information. The second control means supplies power to a drive system of the recording / reproducing apparatus and a signal processing system for recording or reproducing the information when the count values match.

In the signal processing device according to the present invention, for example,
The first or second control means performs display control of the display device of the recording / reproducing apparatus to display an initial setting screen when the count values match, and displays the display when the count values do not match. The display of the device may be erased. In the signal processing device according to the present invention, for example, data for specifying information to be recorded or reproduced is generated by an operation switch of the recording / reproducing device, and the first or second control unit determines that the count values match. In such a case, the display device may be configured to perform display control to display the data.

In the signal processing device according to the present invention, for example,
The first control means may perform input / output control of an input / output device of the recording / reproducing apparatus, and may supply the input signal generated by the operation switch to the second control means.

The second control means performs the second operation when the input signal in the first state is supplied, and stops the second operation when the input signal in the second state is supplied. So
The operation of the second control means can be controlled by the input signal. Since the second control means performs the second operation when the count values of the first and second counting means match, the second control means inputs the second control means which has stopped the second operation to the second control means. An accurate operation according to the input signal in the state 1 can be performed, and the operations of the first and second control means based on the same input signal can be linked.

[0015]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic block configuration diagram showing an embodiment of a signal processing device according to the present invention.

As an example of the signal processing device according to the present invention,
A recording / reproducing apparatus that records or reproduces information using an optical disk such as a minidisk, specifically, a minidisk system will be described. The optical disk is an example of a magneto-optical recording medium. The recording / reproducing apparatus 100 includes an input / output device 10, a microcomputer (microcomputer) 50, a signal processing system 20, and a drive system 40.

The output device 10 output device 10 includes an operation switch 11, receiver 12
And a display device 13.

The operation switch 11 is constituted by, for example, a push button type (or touch button type) switch, and generates an input signal S11 for instructing the operation of the recording / reproducing apparatus 100 by an operation of an operator. It is supplied to the microcomputer 50.

The receiving device 12 receives a transmission signal transmitted from a remote controller (not shown) and supplies the received signal to the microcomputer 50. The recording / reproducing apparatus 100 can remotely control the recording / reproducing apparatus 100 by operating the remote control device.

The display device 13 is, for example, a liquid crystal display (LC).
D: Liquid Crystal Display) or the like, and the display is controlled by the microcomputer 50 to display various information on the display surface.

The signal processing system 20 a signal processing system 20 includes an analog / digital converter 21
, A digital / analog converter 22, an ATRAC encoder / decoder 23, a seismic memory controller 24, and a DRAM (Dynamic Random Access Memory) 2.
5, an EFM / CIRC encoder / decoder 26,
Drive circuit 27, magnetic head 28, RF amplifier 31
, An address decoder 32, and a nonvolatile memory 35.

An analog / digital converter (A / D converter) 21 receives an analog audio signal (analog audio signal) Si at the time of recording information, and converts the audio signal Si into a digital audio signal (digital audio signal). ) Convert to Sid and ATRA
This is supplied to the C encoder / decoder 23.

The ATRAC encoder / decoder 23
It has an ATRAC encoder and an ATRAC decoder. The ATRAC encoder is an ATRAC (Adaptive TRansform Acoustic Coding) using a masking effect.
, A digital audio signal Sid is compressed to a 1/5 bit rate to generate an audio signal Sia, and the audio signal Sia is supplied to the memory controller 24 for earthquake resistance. The ATRAC decoder receives the audio signal Soa compressed by the compression method from the memory controller 24 for earthquake resistance, generates an audio signal Sod obtained by expanding (expanding) the audio signal Soa to a five-fold bit rate, and generates the audio signal Sod. Sod
Is supplied to the D / A converter 22.

A digital / analog converter (D / A converter) 22 receives a digital audio signal (digital audio signal) Sod at the time of reproducing information, and converts the audio signal Sod into an analog audio signal (analog audio signal). ) Convert to So.

The seismic (or anti-vibration) memory controller 24 is an ATRAC encoder / decoder 23 with an AT.
The audio signal Sia is supplied from the RAC encoder,
The audio signal Sia is supplied to the EFM / CIRC encoder / decoder 26 while being written into the DRAM 25 and temporarily stored (or after recording for a predetermined time). In addition, the memory controller 24 for earthquake resistance
An audio signal Soa is supplied from the FM / CIRC encoder / decoder 26, and the audio signal Soa is
The data is supplied to the ATRAC encoder / decoder 23 while being written and temporarily stored in the AM 25 (or after recording for a predetermined time).

When the DRAM 25 is used as a shock-proof memory (or a sound skip guard memory), when an external shock is applied to the recording / reproducing apparatus 100 and signal writing or signal reading is temporarily interrupted, signals are continuously output from the DRAM 25. Output and optical pickup 44 in the meantime
Is moved to the original signal position, so that sound is not skipped during recording or reproduction.

EFM / CIRC encoder / decoder 2
6 is an EFM encoder and an EFM decoder, and CI
It has an RC encoder and a CIRC decoder. The EFM / CIRC encoder / decoder 26 is supplied with the audio signal Sia from the anti-seismic memory controller 24 when recording information, and the audio signal Sia
Drives the excitation drive circuit 27 of the magnetic head 28 on the basis of. Further, at the time of information reproduction, a read signal which is a binary signal is supplied from the RF amplifier 31, and based on the read signal, an audio signal Soa is generated and supplied to the memory controller 24 for earthquake resistance. Also, an address signal indicating the address of the read signal is supplied from the address decoder 32, and for example, a CRC (Cycl
ic Redundancy Check) and supplies it to the microcomputer 50.

The CIRC encoder is supplied with an audio signal Sia at the time of recording, and this audio signal Sia
Against CIRC (Cross Interleaved Reed-solomon C
ode) signal processing (CIR)
C modulation) and supplies it to the EFM encoder. In addition,
In CIRC, a Reed-Solomon code (C1, C2) which is an error correction code having a high random error correction capability
By combining a method of converting a burst error into a random error by interleaving, error correction of a digital signal is performed.

The EFM encoder is supplied with an audio signal subjected to CIRC modulation from the CIRC encoder, and converts the audio signal into an EFM (Eight to Fourteen) signal.
Modulation (EFM modulation)
And supplies it to the drive circuit 27. In the EFM, 8-bit (256 types) data is converted into 14-bit (1638) data.
The data is converted into 256 types of data selected so that 1 or 0 of the (4 types) data is not connected for a long time.

The EFM decoder uses R when reproducing information.
A read signal is supplied from the F-amplifier 31, and the read signal is subjected to signal processing (EFM) opposite to that of the EFM encoder.
Demodulation) and supplies it to the CIRC decoder. CIRC
The decoder applies a CIR to the output signal of the EFM decoder.
The signal processing (CIRC demodulation) reverse to that of the C encoder is performed, and an audio signal Soa is generated and supplied to the memory controller 24 for earthquake resistance.

The drive circuit 27 applies a current to the coil of the magnetic head 28 to excite it based on the output signal of the EFM encoder, and applies a magnetic field to the optical disk 90 as a recording medium (magneto-optical recording medium). At the time of information recording, the optical pickup 90 irradiates the optical disk 90 with the laser beam 45, raises the temperature of the irradiated portion to the Curie point, and determines the direction of magnetization of the irradiated portion by the magnetic head 28 to record information.

The RF amplifier (RF amplification circuit) 31 is supplied with a received light signal from the optical pickup 44, converts the received light signal into an RF signal, generates a binary read signal based on the RF signal, and generates an address. The signal is supplied to the decoder 32 and the EFM / CIRC encoder / decoder 26. Further, the RF signal is supplied to the servo control circuit 41 and the like. The address decoder 32 detects an address of data included in the read signal from the read signal from the RF amplifier 31, and outputs an address signal indicating this address to the EFM.
Supply to CIRC encoder / decoder 26;

The drive system 40 drive system 40 includes a servo control circuit 41, a spindle motor 42, a sled motor 43, optical pickup 44
And a tracking actuator and a focusing actuator (not shown). The servo control circuit 41 controls the rotation of the spindle motor 42 and the sled motor 43, and controls the laser light 4 of the optical pickup 44.
5 to control the tracking actuator and the focusing actuator.

The spindle motor 42 rotates at a predetermined rotation speed under the control of the servo control circuit 41 during recording and reproduction, and rotates the optical disk 90 at a constant linear speed. The optical disc 90 may be configured to rotate at a constant rotation speed. The thread motor 43 moves the optical pickup 44 to a predetermined position under the control of the servo control circuit 41.

The focusing actuator moves the optical pickup 44 or its objective lens to the optical disk 90.
Is moved in the focus direction orthogonal to the signal recording surface so that the laser beam 45 is focused on the signal recording surface. The tracking actuator moves the optical pickup 44 or its objective lens in the radial direction (or the tracking direction) of the optical disc 90 so that the laser light 45 is focused on the track.

The optical pickup 44 converges the laser beam 45 during recording and reproduction, irradiates the laser beam 45 onto the optical disc 90, and supplies the RF amplifier 31 with a light receiving signal obtained by photoelectrically converting the reflected laser beam.

The microcomputer 50 is a controller that controls the entire recording / reproducing apparatus 100. This microcomputer 50
Controls the signal processing system 20 and the drive system 40 based on the input signal S12 received by the receiving device 12 or the input signal S11 from the operation switch 11, and causes the signal processing system 20 and the drive system 40 to perform predetermined operations. . Further, the microcomputer 50 controls the display of the display device 13 and
To display various information. Further, the microcomputer 50 controls access to the nonvolatile memory 35 and writes and stores various information. Data that depends on the number of times the microcomputer 50 is turned on or data that is updated when the power is turned on / off may be written to the nonvolatile memory 35.

FIG. 2 is a simplified block diagram of the recording / reproducing apparatus 100 of FIG. Recording / reproducing device 10 of FIG.
0 indicates the input / output device 10, the microcomputer 50, and the control target 6
0. The control target 60 includes the signal processing system 20 and the drive system 40.

The microcomputer 50 has first and second control means 51 and 52. The first control means 51 is a part of the microcomputer 50 which controls input / output such as a human interface and external communication, and may be constituted by software, and may be constituted by one CPU (Central Processing Unit).
). The first control unit 51 controls input / output of the input / output device 10 and controls the second control unit 52. The first control means 51 supplies input signals S11 and S12 from the input / output device 10 to the second control means 52. Further, the first control means 51 has a first counting means 56, and the first counting means 56
The input signal S11 in the first state is counted.

The second control means 52 is a part of the microcomputer 50 which controls the mechanism of the recording / reproducing apparatus 100 and the signal processing related to the mechanism. The second control means 52 may be constituted by software or may be constituted by one CPU. May be. The second control means 52 controls the control target 60. For example, when the input signal S11 in the first state is supplied, the second control unit 52 performs a second operation of supplying power to the control target 60. On the other hand, the second control means 52
When the input signal S11 in the second state is supplied,
The power supply to the control target 60 is stopped, and the control target 60 and the second control means 52 are turned off after a predetermined time. The second control means 52 has a second counting means 57, and counts execution of the second operation.

It should be noted that the shortest period T1 from when the input signals S11 and S12 enter the first state until the input signals S11 and S12 return to the first state through the second state is determined by the second control means 52.
(For example, power supply to the control symmetry 60), the second cycle is stopped, and the cycle T2 is shorter than the shortest cycle T2. Further, the elapsed time Td1 from when the input signals S11 and S12 in the first state are input to the recording / reproducing apparatus 100 to when the second control means 52 performs the second operation is determined by the second Is shorter than the elapsed time Td2 from the input of the input signals S11 and S12 in the state described above until the second control means 52 stops the second operation.

Next, the operation of the signal processing device according to the present invention will be described by way of example. FIG. 3 is a schematic flowchart illustrating the operation of the recording / reproducing device 100 which is an example of the signal processing device according to the present invention.

First, in step S1, the recording / reproducing device 1
The operation switch 11 of 00 is operated by the operator, and an input signal S11 is generated and input to the first control means 51.

When the input signal S11 is in the first state,
That is, in a state in which the start of recording or reproduction (recording / reproduction) is instructed, the power supply of the first control means 51 is turned on, and the count value A of the first counting means 56 is incremented by one. (Steps S2 and S3). When the input signal S11 is in the second state, that is, when the recording / reproduction is instructed to stop, the recording / reproduction device 10
0 power off is started (steps S2 and S4). In this case, the first control unit 51 is immediately turned off, but the second control unit 52 and the control target 60 are turned off after a predetermined time.

In step S5, the first control means 51
Determines whether the second control means 52 is in the power-off state. If the second control unit 52 is in the power-on state, the process proceeds to step S7. If the second control means 52 is in the power-off state, the process proceeds to step S6, where the second control means 52 is turned on, and the count value B of the second counting means 57 is set to the count value A.

In step S7, the second control means 52 determines whether or not the count value A and the count value B match. If the counts match, the process proceeds to step S8, and the control target 6
0 and supply a predetermined start signal to the control target 60.
To the signal processing system 20 and the driving system 40 to start recording / reproducing processing. Further, the display device 13 displays predetermined data. For example, by the operation switch 11,
Data for specifying information to be recorded / reproduced is generated, and the first
Alternatively, when the count values match, the second control means 51 and 52 may perform display control of the display device 13 to display the data.

If the count values do not match, the flow advances to step S9, and a predetermined stop signal is output to the signal processing system 20 of the control target 60.
And supply to the drive system 40 to stop recording / reproduction.
Further, the display on the display device 13 is erased.

FIG. 4 is a schematic time chart for explaining the operation of the recording / reproducing apparatus 100. Input signal S11
, The first state and the second state are alternately repeated by the switch operation of the operator. The first control means 51 includes:
The power-on state and the power-off state are alternately repeated according to the input signal S11. The first counting means 56 includes
The input signal S11 in the state described above is counted up.

The second control means 52 is supplied with the input signal S 11 in the first state from the first control means 51, is turned on, and supplies power to the control target 60. An elapsed time Td1 has elapsed from when the input signal S11 in the first state is input to the recording / reproducing apparatus 100 to when the second control unit 52 is turned on.

On the other hand, the second control means 52 is turned off when the input signal S11 in the second state is supplied from the first control means 51, and the control target 60 is also turned off. An elapsed time Td2 has elapsed from when the input signal S11 in the second state is input to the recording / reproducing apparatus 100 to when the second control unit 52 is turned off.

The second counting means 57 includes a second control means 5
When the power supply 2 is turned on to supply power to the control target 60, the count value B is counted up. However, when the second control means 52 is in the power-off state and the input signal S11 in the second state is supplied, the count value A is set in the second count means 52.

Here, in the recording / reproducing apparatus 100, a power ON / OFF command of the recording / reproducing apparatus 100 is intermittently supplied by a switch operation or an operation of a remote control apparatus (remote control operation), and a mode (for example, Count value A
Is changed sequentially, and it is assumed that it takes a certain amount of time for the power on / off transition of the control target 60 having the drive mechanism.

When the operation of the control target 60 takes a long time,
For example, when the first control unit 51 is performing a third power-on operation or a control operation related thereto,
The second control means 52 or the control target 60 may be in a state where the first power-on operation or the control operation related thereto is being performed.

In the recording / reproducing apparatus 100 according to the present invention, when the first control means 51 is turned on, the count value A of the first counting means 56 is incremented, and the second control means 52 is turned off from the power off state. When the power is turned on, the count value A is set in the second counting means 57, and it is determined whether or not the count values A and B of the first and second counting means 56 and 57 match.

When the count values A and B do not match, the processing that may perform an improper operation is stopped, or an improper display is deleted from the display screen, so that the recording / reproducing apparatus 100 is not operated. Suppress improper operation. In this way,
When the first and second control means 51 and 52 commonly access data that depends on the number of power-on times (this number is referred to as an operation generation) or data that is updated by power-on / off, First due to generation gap
And the operations of the second control means 51 and 52 do not match,
An improper operation can be prevented.

When the count values A and B match, the first and second control means 51 and 52 have the same operation generation and can guarantee the validity of commonly accessed data. As described above, according to the signal processing device of the present invention, when there is a time difference between the mode transitions of two or more operation blocks, the operation of the modes is temporally matched using the counting unit. It is possible to guarantee the validity of the operation of the signal processing device.

For example, in the recording / reproducing apparatus 100, the first control means 51 controls on / off of the power of the display device 13, and the second control means 52 supplies display data to the display device 13, and displays the data. It is assumed that the device 13 displays data such as the total number of songs on the optical disc 90 and the total playing time.
In the recording / reproducing apparatus 100, the power is temporarily turned off,
When the optical disk 9 is turned on again, the previous display data (display data of the previous operation generation) is invalidated and the optical disk 9
It is necessary to read the TOC data again from 0 and display it.

By the quick switch operation by the operator, the first
When the second control means 52 has not escaped from the first power-on state despite the fact that the control means 51 has been turned on for the second time, the conventional recording / reproducing apparatus uses the previous operation generation. Although the display data may be displayed, the recording / reproducing apparatus 100 can prevent such incorrect display operation.

The above embodiment is an exemplification of the present invention, and the present invention is not limited to the above embodiment. The first control means 51 may be configured to perform input / output control as a first operation when the count values match. The first and second control means 51 and 52 may be divided according to programs mounted on different microcomputers or different CPUs. Further, the first and second control means 51, 52
Instead of individual units, a plurality of second control units 52 and their control targets 60 may exist. In addition, the signal processing device according to the present invention is applicable to operations other than power on / off, and various systems in which a time difference occurs in mode transition, such as a video tape recorder that performs an information reproducing operation, an information recording operation, and the like. May be applied.

[0060]

In the signal processing device according to the present invention, when the count values of the first and second counting means match, the second control means performs the second operation, so that the second operation is stopped. A correct operation corresponding to the input signal in the first state inputted to the second control means, and the operations of the first and second control means based on the same input signal are linked. Is possible. Thus, according to the present invention, it is possible to provide a signal processing device capable of performing an accurate operation according to an input signal when the input signal is input in a short cycle.

[Brief description of the drawings]

FIG. 1 is a schematic block diagram showing an embodiment of a signal processing device according to the present invention, and illustrates a recording / reproducing device 100 as a signal processing device.

FIG. 2 is a simplified block diagram of the recording / reproducing apparatus 100.

FIG. 3 is a schematic flowchart illustrating an operation of the recording / reproducing apparatus 100.

FIG. 4 is a schematic time chart illustrating the operation of the recording / reproducing apparatus 100.

[Explanation of symbols]

Reference Signs List 10 input / output device, 11 operation switch, 12 reception device, 13 display device, 20 signal processing system, 21 analog / digital converter (A / D converter), 22 digital / analog converter ( D / A converter), 23 ATR
AC encoder / decoder, 24: memory controller for earthquake resistance, 25: DRAM (shock proof memory),
26 ... EFM / CIRC encoder / decoder, 27 ...
Drive circuit, 28: magnetic head, 31: RF amplifier, 32
... Address decoder, 35 nonvolatile memory, 40 drive system, 41 servo control circuit, 42 spindle motor, 43 thread motor, 44 optical pickup, 4
5 ... laser light, 50 ... microcomputer (microcomputer), 51 ... first control means, 52 ... second control means,
56 ... first counting means, 57 ... second counting means, 60 ...
Control target, 90 ... optical disk (magneto-optical recording medium), 10
0: Recording / reproducing device (signal processing device).

Claims (9)

[Claims] 1. A first counting means for counting an input signal in a first state, a first control means for performing a first operation based on the input signal in a first state, a first state Performing a second operation based on the input signal, and stopping the second operation based on the input signal in a second state; and counting execution of the second operation. A second counting unit that, when the input signal in the first state is supplied to the second control unit that is stopping the second operation,
And a second counting means for setting a count value of the counting means, wherein the second control means, when the count values of the first and second counting means coincide with each other, A signal processing device that performs operations. 2. The signal processing device further includes a memory in which stored data is updated in accordance with a count value of the first counting means, wherein the first and second control means include a memory for updating the stored data. 2. The signal processing device according to claim 1, wherein the signal processing device accesses stored data. 3. The signal processing apparatus according to claim 1, wherein said first control means performs said first operation when the count values of said first and second counting means match. 4. The shortest period from when the input signal changes to the first state to when the input signal changes to the first state via the second state, the second control means performs the second operation. The signal processing device according to claim 1, wherein the period is shorter than a shortest period from when the second operation is stopped until the second operation is performed again. 5. An elapsed time from when an input signal in a first state is input to the signal processing device to when the second control means performs the second operation is equal to a second time. 5. The signal processing apparatus according to claim 4, wherein an elapsed time from when the state input signal is input to when the second control means stops the second operation is shorter. 6. The recording / reproducing apparatus for recording or reproducing information by irradiating a magneto-optical recording medium with a laser beam, wherein the input signal is generated by an operation switch of the recording / reproducing apparatus. The input signal has a first state instructing recording or reproduction of the information or a second state instructing stop of recording or reproduction of the information, and the second control unit determines that the count values match. If you do
2. The signal processing device according to claim 1, wherein power is supplied to a drive system of the recording / reproducing device and a signal processing system for recording or reproducing the information. 7. The first or second control means, when the count values match, performs display control of a display device of the recording / reproducing apparatus to display an initial setting screen, and the count values match. 7. The signal processing device according to claim 6, wherein the display on the display device is erased when not performed. 8. An operation switch of the recording / reproducing apparatus,
8. Data for designating information to be recorded or reproduced is generated, and when the count values match, the first or second control means performs display control of the display device to display the data. A signal processing device according to claim 1. 9. The apparatus according to claim 1, wherein said first control means controls input / output of an input / output device of said recording / reproducing apparatus, and supplies said input signal generated by said operation switch to said second control means. Item 7. The signal processing device according to Item 6.