JPS61212975A - Recording and reproducing device - Google Patents

Abstract

PURPOSE:To improve the picture quality of an image and the reliability and safety of a device by providing other memory which can store the video signal of at least one picture portion of a recording track of the video signal which is formed on a recording medium. CONSTITUTION:When it is detected that the level of an inputted reproducing FM signal exceeds a prescribed level, and also it is in a stable level, a level detector 8 outputs a trigger pulse. Also, by this trigger pulse, an SW 5 is connected to a contact A side, a clock generator 17 generates a clock signal synchronizing with the output signal of a synchronizing separator circuit 15, and the video signal of one frame portion is stored in a memory 11. Thereafter, the SW 5 is switched to a contact B side immediately, and by the reference clock of the clock generator 17 synchronizing with a synchronous signal from a synchronous signal generator 16, the stored contents of the memory 11 are read out. Also, an operation by which a video signal which is converted to an analog signal by a D/A converter 12 is displayed on a monitor 14 is executed alternately at a normal time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a video signal recording and reproducing device having a recording medium, and particularly to a recording/reproducing device for recording and reproducing video signals on a recording medium via other storage means such as a semiconductor memory. The present invention relates to a recording and reproducing device that can safely and reliably record and reproduce video signals by reading them out.

[Prior Art] Conventionally, in this type of device, during reproduction of a video signal, the magnetic sheet must be rotated and the video signal recorded on the magnetic sheet must always be read out by a magnetic head. Therefore, when reproducing video signals on the same track on a magnetic sheet for a long time, the magnetic sheet comes into contact with the magnetic head, causing wear and tear on the magnetic layer of the magnetic sheet. . Similarly, the magnetic head also wears out, resulting in a disadvantage that the recording and reproducing characteristics of the magnetic head fluctuate.

Furthermore, even if one wishes to record immediately, it takes time for the sheet to rotate, resulting in poor responsiveness.

On the other hand, when erasing a video signal recorded on a magnetic sheet, after playing back and confirming the video signal,
It was configured to erase the video signal, but
If you accidentally operate the switch to erase the video signal during playback, it will be impossible to restore the video signal once it has been deleted, and you will lose the important video signal. This had the serious drawback of being dangerous.

[Objective] The present invention eliminates the above-mentioned drawbacks and provides another memory capable of storing a video signal for at least one screen (field or frame) of a video signal recording track formed on a recording medium. The purpose of the present invention is to provide a recording/reproducing device with improved image quality, device reliability, safety, etc.

In order to achieve this object, an embodiment of the present invention provides a recording/reproducing apparatus capable of recording/reproducing and erasing a video signal for each track on a recording medium having a plurality of concentric tracks. a storage means for storing a video signal to be recorded and reproduced; a detection means for detecting that the reproduced video signal is stable when reproducing the video signal from the recording medium; and reproduction according to the output of the detection means. The present invention is characterized by comprising a control means for writing the video signal into the storage means.

Further, the embodiment of the present invention provides control for switching between the reproduced video signal read from the storage means and the video signal read from the track on the recording medium using a magnetic head in accordance with the output of the detection means, and outputting and displaying the same on the monitor means. It is characterized by having the means.

Further, in the embodiment of the present invention, the storage means converts the time axis and transmits the reproduced video signal through the communication line, and the storage means receives the video signal transmitted through the communication line and converts the time axis by the storage means. A receiving means compresses and restores the original video signal, and when the transmitting means or the receiving means transmits or receives the video signal via the storage means, the reproduced video signal reproduced from the recording medium is stored in the storage means. It is characterized by comprising a control means for prohibiting writing.

Further, in the embodiment of the present invention, when erasing a video signal recorded on a recording medium, the video signal to be erased is stored in the storage means, and the video signal is transferred to the storage means by inputting an instruction after erasing. It is characterized by comprising a control means having a function of reading data from the recording medium and re-recording it on the recording medium.

[Example] Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of the invention. Here, reference numeral 1 refers to a rotating sheet as a recording medium, which is a disk-shaped magnetic sheet such as a floppy disk in which a plurality of tracks are formed concentrically so that video signals can be recorded, reproduced, and erased on each track. 2 is a disk motor (for example, a DC motor) that rotates the magnetic sheet 1; 3 is a motor that transmits video signals to the magnetic sheet 1;

This is a magnetic head that performs recording and reproduction. These 1, 2, 3, etc. constitute a recording/reproducing means. 4 is a video signal input terminal (video input terminal), and 5 is a recording process circuit (recording signal modulation circuit) for converting the video signal input from the input terminal 4 into a signal suitable for magnetic recording and reproduction. be. θ is a recording amplifier (recording amplifier) that amplifies the output signal of the recording process circuit 5; 7 is a reproduction amplifier (reproduction amplifier) that amplifies the signal reproduced through the magnetic head 3; 8;
A level detector serves as a detection means for determining whether or not the operation of the recording and reproducing means is stable by determining the output signal level of the reproducing amplifier 7. Reference numeral 8 denotes a reproduction process circuit (reproduction signal demodulation circuit) that demodulates the original video signal from the output signal of the reproduction amplifier 7 and outputs it.

IO is an A/D (analog/digital) converter that converts the analog video signal output from the reproduction process circuit 9 into a digital signal. Reference numeral 11 denotes a semiconductor memory as a storage means for storing one frame of digital video signal information input from the A/D converter 10. 12 is semiconductor memory 1
This is a D/A (digital/analog) converter that converts the digital video signal read from 1 into an analog signal again. 13 is connected to the input terminal 4, the reproduction process 8, or the D/A converter 12 by switching the switch described later.
14 is a monitor (television) that visualizes the output of the video amplifier 13.

Further, 15 is a synchronization separation circuit that separates a synchronization signal from the reproduced video signal output from the reproduction process circuit 9, 16 is a synchronization signal generator, and 17 is connected to the synchronization separation circuit 15 or the synchronization signal generator 16 via a switch to be described later. It is a clock generator that outputs a reference signal that accesses the semiconductor memory 11 address in synchronized with the synchronous signal entered from, and the 18 is an eraser generator that generates an erasure signal that erases a record signal on the magnetic sheet L. It is.

SW (switches) ■ to ■ are relay switches serving as control means for switching signal paths. SW■ switches the input terminals of the recording process circuit 5 and the video amplifier 13 to either the video input terminal 4 or the D/A converter 12. S
W■ switches the input terminal of the amplifier 8 to either the recording process circuit 5 or the erase signal generator 18. S-■ contacts the A terminal side to connect the recording amplifier 6 and the magnetic head 3, while it contacts the B terminal side to connect the 71% head 3 and the reproduction amplifier 7. , SW■ switches to either the D/A converter 12 or the reproduction process circuit 8 for the subsequent SW■. S
w■ serves as an input synchronizing signal to the clock generator 17 and is switched to either the synchronizing separation circuit 15 or the synchronizing signal generator 18. Further, S-■ switches the input terminal of the video amplifier 13 to either the video input terminal 4 and the D/A converter 12 or the reproduction process circuit 9.

In the above configuration, an example of the operation of the apparatus of the present invention will be described in detail below.

(A) First, a case will be described in which a video signal is recorded on a trunk formed on a magnetic sheet l.

When you turn on the recording switch (not shown), sw →
A, , SW■→A, SW■→A, SW■→
It is set on the A terminal side. A video signal inputted from the video input terminal 4 is inputted to the recording process circuit 5 by connecting SW 2 to its A terminal side.

At the same time, SW■ is connected to the A terminal side, so that the video signal input from the video input terminal 4 is transferred to the video 1
3 and displayed as a visible image on the monitor 14.

The video signal input to the recording process circuit 5 is first separated into a color difference signal and a luminance signal, and both of the separated signals are FM-modulated into a frequency-multiplexed FM signal. Due to this modulation, the color difference signal becomes an FM modulated signal that becomes a line sequential time signal in the low frequency range, and the luminance signal becomes an FM modulated signal in the high frequency range.

Frequency multiplexed F output from the recording process circuit 5
Since the M signal is connected to its A contact side, the M signal is input to the recording amplifier 6 and amplified, and then the S
By connecting W to its A contact side, the FM signal amplified by the recording amplifier 6 is input to the magnetic head 3, and the magnetic head 3 transfers one of the video signals onto the rotating magnetic sheet 1. The fields are recorded as l tracks.

(B) Next, the operation when reproducing the video signal recorded on the magnetic sheet 1 will be explained.

When you turn on the playback switch (not shown), SW→
B, SW■→A, SW■→B are set to the terminals.

During playback, SW■ is connected to its B contact side, and the magnetic head 3 reads out the video signal recorded on the track from the track formed on the magnetic sheet 1-11 being rotated by the motor 2. The reproduced signal is sent to the reproduction amplifier 7.

The playback amplifier 7 extracts a minute signal from the magnetic head 3 (
The reproduced signal) is amplified and input to the reproduction process circuit 8. The reproduction process circuit 8 demodulates the frequency multiplexed FM signal to obtain a color difference signal and a luminance signal, and then outputs the color difference signal and the luminance signal as a composite video signal. Further, since the reproduction process circuit 5 is equipped with an internal skew compensation circuit, when field reproduction is performed, a signal skew compensated by the skew compensation circuit is outputted from the reproduction process circuit 5.

The video signal output from the reproduction process circuit 8 is A/I]
The signal is input to a converter 10 and converted into a digital signal. At the same time, the video signal output from the reproduction process circuit 8 is also input to the synchronization separation circuit 15, and the synchronization signal is separated.

Further, the output signal (reproduced FM signal) from the reproducing amplifier 7 is also input to the level detector 8 . In the level detector 8, the level of the input reproduced FM signal is equal to or higher than a predetermined level,
Moreover, when it detects that the level is stable, it outputs a trigger pulse. In response to this trigger pulse, SW■
is connected to the A terminal side. "-When the trigger pulse mentioned above is input to the clock generator 17 from the level detector 8,
The clock generator receives a synchronization signal input through SW■,
In this case, a reference clock synchronized with the output signal from the synchronization separation circuit 15 is generated, and this reference clock becomes the write clock of the semiconductor memory 11.
/D conversion Conversion l The video signal converted into an upstream digital signal is stored for one frame.

On the other hand, if the level detector 8 does not output the above trigger pulse, that is, if the level of the output signal of the regenerative amplifier 7 is lower than a predetermined level or is not stable, the clock generator 17 outputs the write signal. Since no clock is generated, the signal obtained by AID conversion of the reproduced video signal by the A/D converter IO is not read into the memory 11, and the information previously written to the memory 11 is retained.

Further, SW ■ is connected to its A contact side only while the video signal information is being written to the memory 11. Therefore, when this writing is not performed, SW■ is B
Since it is on the contact side, the output signal from the synchronization signal generator 16 is input to the clock generator, and a clock synchronized with this output signal is output from the clock generator 17 and the memory 1
The information in 1 is read out. Also, during the above playback, S
Since W■ is connected to the A terminal and SW■ is connected to the B terminal, the contents of the memory 11 are always displayed on the monitor 14 as D/A.
The image is displayed as a video signal converted into analog by the converter 12. That is, unless new video signal information is written to the memory 11, the video signal stored in the memory 11 will not change, and therefore the display content displayed on the monitor 14 as a reproduced video signal will also change. It does not change.

By the way, SW■ is connected to the A contact side by the trigger pulse from the level detector 8, and the clock generator 17 generates a clock signal synchronized with the output signal of the synchronous separator 15, and stores data for one frame in the memory 11. Immediately after storing the video signal, the sync signal is switched to the B contact side, and the sync signal from the sync signal generator 18 is input to the clock generator 17, and the sync signal from the sync signal generator 16 is input to the clock generator 17. The reference clock of the clock generator 17 synchronized with the memory 1
1 is read out and input to the D/A converter 12, and a video signal converted to an analog signal by the D/A converter 12 is displayed on the monitor 14. This operation is alternately executed during normal operation. Ru.

The time required to store a video signal (for one frame) in the memory 11 is approximately 1/30 second, and although the contents of the memory 11 cannot be read out and monitored at this time, the memory 11 Since the newly stored video signal is immediately read out and displayed on the monitor 14, the above-mentioned writing time of 1730 seconds is practically not a problem. Further, the output signal of the sync separation circuit 5 is input to the sync signal generator 16, and the sync signal generated from the sync signal generator 16 and the output signal from the sync separation circuit 15 are configured to be phase-synchronized. Therefore, there is almost no synchronization disturbance when the display changes, and no problem occurs. .

(G) Next, the operation when no video signal is recorded on the track of the magnetic sheet 1 being reproduced will be described.

When no video signal is recorded on the above-mentioned track, the output signal level of the reproduction amplifier 7 is so low that no trigger pulse appears at the output terminal of the level detector 8.

Therefore, in this case, the video information previously written to the memory 11 will be displayed as is on the mokoyu 14, but after a certain period of time has passed since the start of playback of a certain track, the level detector When the trigger pulse is not output from 8, SW■ is connected to the B terminal side by a trigger pulse from a detection circuit (not shown), and at the same time, the contents of memory 11 are also cleared (erased). . That is, the monitor 14 at that time displays the signal obtained by reproducing the unrecorded track on the magnetic sheet 1. This signal is generally a low level noise, and since the noise is displayed on the monitor 14, the operator can be informed that the currently playing track is an unrecorded track.

In this way, after the level detector 8 detects that the output level of the reproduction amplifier 7 is higher than a predetermined value and is stable, the reproduced video signal is stored in the memory 11, and the output level of the reproduction amplifier 7 is stored in the memory 11. Video signal 1 read from
1 is displayed on the monitor 14, so even when the magnetic head 3 is sent at high speed, a video signal with little noise and almost no synchronization disturbance can be monitored]
4 can be displayed.

Furthermore, when the video signal read from the memory 11 is displayed as a reproduced video signal on the monitor 14, there is no need for the magnetic head 3 and the magnetic sheet 11 to be in contact with each other. You can keep it. That is, even when the same video signal is monitored for a long time, according to this example, the head 3 and the sheet 1 are not always in contact with each other, so the magnetic sheet 1 and the magnetic head 3 are hardly worn out. , and since the image is displayed via the memory 11, the image being reproduced on the monitor 14 is also stable.

(D) Next, the case of erasing the video signal from the magnetic sheet 1 will be explained.

First, when erasing a video signal from the magnetic sheet 1, it is necessary to reproduce the video signal to be erased from the magnetic sheet 1 and check it on the monitor 14. Therefore, first, when the video signal is being played back by the above-described playback operation, when the operator turns on the erase switch (not shown), the S
Since W■ is connected to the B terminal side, SW■ is set to the A terminal side, and Sw■ is set to the A terminal side, the recording amplifier 6 receives an attenuation signal of, for example, about 2 KHz as an erase signal. It is input from the generator 18. This erasing signal is amplified through the recording amplifier 6 and then recorded by the magnetic head 3 on the corresponding track on the magnetic sheet that has been reproduced so far, so that the video signal on that track on the magnetic sheet 1 is erased. Furthermore, at the time of erasing, the video signal that was being reproduced before erasing is stored in the memory 11, but while the video signal on the magnetic sheet 1 is being erased, the reading of the clock generator 17 is Since the generation of the standard clock for use is stopped, no video is displayed on the monitor 14. After that, when erasing is completed, SW■ immediately switches to the B terminal side, and SW■ also switches to the B terminal side in conjunction, so that the low-level noise when playing a track with no signal appears on the monitor 14. Is displayed.

Also, since no trigger pulse is output to the output terminal of the level detector 8 even after a certain period of time has elapsed after erasure,
At this time, since the write reference clock of the clock generator 17 has stopped, the memory 11 is not reset either. That is, at the time of erasing, even after erasing, the video signal information before erasing is stored in the memory 11, so even if the video signal is erased from the track of the magnetic sheet 1 by mistake, the memory 11 The contents can be read out and displayed on the monitor 14.

When the above-mentioned erasure is completed, SW■ is switched to the A terminal side by turning off (opening) the erasure switch (not shown), and SW■ is connected to the B terminal side and Sw■ is connected to the B terminal side. , the monitor 14 displays the noise when the erased track is played back; at this time, the memory contents of the memory 11 can be read out and displayed on the monitor 14 using a memory read switch (not shown). . That is, when the operator turns on the above-mentioned memory read switch,
By connecting SW■ to the B terminal side, SW■ to the A terminal side, and SW■ to the B terminal side, the video signal before erasing can be monitored on the monitor 14. If you accidentally erase the data, please operate the re-recording switch (not shown) to connect Sw■ to the B terminal side, Sw■ to the A terminal side, and connect the listener ■ to the A terminal side and try again. If a recording operation is performed on the same erased track on the magnetic sheet 1 via the magnetic head 3, the video signal before erasing is stored in the memory 11.
The data can be read from W and recorded on the magnetic sheet 1 again. Therefore, in this example, even if the video signal is erased by mistake, the video signal will not be lost. Furthermore, it goes without saying that by using the playback/recording function described above, it is possible to move the video signal recorded on one track to another track for recording, that is, to easily change the recording track. .

Next, another embodiment of the present invention will be described with reference to FIG. Components with the same reference numerals in FIG. 1 have the same functions.

In FIG. 2, reference numeral 18 denotes a transmission/reception clock generator that generates a reference clock for driving the memory 11 when transmitting/receiving video signals using the telephone line 22. 20 is a D/A converter that converts the digital video signal read from the memory 11 into an analog signal; 21 is a digital-to-analog converted video signal that is transmitted by the A/A converter 20 using a telephone line 22; This is a transmission processing circuit that performs transmission processing for. 23 is a reception processing circuit that receives and demodulates the signal transmitted from the telephone line 22;
4 is an A/D converter that converts the analog video signal demodulated by the receiving processing circuit 23 into a digital signal. SW
■ is a switch that changes the input source of the video signal to the memory 11. When storing the video signal from the magnetic sheet 1 in the memory 11, connect it to the A terminal side, and input the video signal from the telephone circuit 22 to the memory 11. When storing data, connect to the B terminal side. SW■ is a switch for switching transmission and reception to the telephone line 22, and is connected to the A terminal side when transmitting, and to the B terminal side when receiving.

('E) Next, the operation when transmitting a video signal using the telephone line 22 in the second configuration below will be described.

When the transmitter switch (not shown) is turned on, SW■ becomes A.
On the terminal side, SW■ is set to the A terminal side.

The other SWs ■, ■, ■, ■ are the same as during reproduction. The video signal information that can be transmitted at the time of transmission is the video information stored in the memory 11, and this information is read out using the reference clock generated by the transmitting/receiving clock generator 18 and subjected to AM modulation or FM modulation by the transmitting processing circuit 20. and sends it to the telephone line 22 through SW■. At this time, the bandwidth of the video information read from the memory 11 is generally about 4.2 M)lz, but the bandwidth of a public telephone line is about 3 KHz, so the time axis must be converted. Therefore, the reference clock generated from the transmitting/receiving clock generator 19 is set to a frequency sufficiently lower than the clock frequency generated by the clock generator 17, and the video signal is slowly read out from the memory 11 using the reference clock from the generator 19. By doing this, time axis conversion is performed.

(F) Furthermore, the operation when receiving a video signal sent from the telephone line 22 will be explained.

When a receiving switch (not shown) is turned on, SW ■ is connected to the B terminal side, and S SW ■ is connected to the B terminal side.

Further, the other Sw■, ■, ■ are the same as those at the time of re-recording. In this way, during reception, since SW ■ is connected to the B terminal side, static modulation or F
The video signal that has been subjected to M modulation and time axis conversion is demodulated by the reception processing circuit 23 and further converted into a digital signal by the A/D converter 24. write to. In this way, according to this example, the memory 11 is used as a buffer for time axis conversion of video signals, and transmission and reception can be performed using the telephone line 22.

It takes several minutes to transmit or transmit one frame of the video signal stored in the memory 11, and it is not allowed to rewrite the contents of the memory 11 during this time. In other words, when the memory 11 is used for transmission and reception, it is not possible to write the reproduced video signal from the magnetic disk 1 into the memory 11, but in this case, the S - By connecting (2) to the B terminal side, a video signal different from the video signal being transmitted or received can be displayed on the monitor 14.

Therefore, even if it takes several minutes to transmit or receive a video signal through a telephone line, it is possible to search for the next video signal to be transmitted during that time by referring to the monitor 14, and the time can be used effectively. There are advantages. Of course, once the above-mentioned transmission or reception is completed, the memory 11
It is possible to display the video information stored on the monitor 14 or record it on the magnetic disk 1, and it is also possible to display the received information on the monitor 14 even while it is being received. Video information sent through the telephone line 22 can be checked on the monitor 14.

In this way, according to the embodiment, recording, playback, erasing, and transmission and reception of recorded information can be performed via a memory that stores a predetermined amount (for example, one track or one frame or more) of video information. The following effects can be obtained.

■ By using the above-mentioned memory during recording, reliable recording can be performed without missing the recording timing. In other words, generally 0.
It takes about 3 seconds, so it takes 0.3 seconds or more for the disk motor to go from a stopped state to a state where it can record on the magnetic sheet, and then turn on the recording switch (REC5W). Even if the video signal is recorded on the magnetic sheet, it is not possible to immediately record the video signal, but if the embodiment of the present invention is used, the video to be recorded on the magnetic sheet can be written once in the memory, and then the contents of the memory can be transferred to the magnetic sheet. By adopting this processing procedure (sequence), it is possible to provide a recording apparatus in which the recording timing does not deviate. This method places particular importance on the recording timing, and can be suitably applied to still image recording in which video signals are recorded frame by frame on a floppy disk, for example, to electronic still cameras, document recording devices, and the like.

■ After the playback signal is stabilized, the video signal is loaded into the memory, and the contents of the memory are then monitored, thereby reducing wear on the magnetic sheet and recording head.

- When erasing, the reproduced video signal is stored in the memory, so even if it is erased by mistake, the video signal will not be lost and can be restored again.

■ By providing a switch that switches and outputs the video signal from the memory and the video signal directly reproduced from the magnetic head, rewriting the memory that takes several minutes when transmitting and receiving video signals using a telephone line is eliminated. It is possible to monitor the reproduction signal even during a period when the transmission is not possible, and in particular, during transmission, such as when transmitting a plurality of video signals, the next video to be transmitted can be reproduced and searched on the monitor.

■ Even when moving magnetic film tracks during playback, by storing only video signals of image quality above a certain level in memory, stable playback can be achieved with almost no noise and no synchronization disturbances. can.

It goes without saying that the recording medium recording head in the above embodiments does not have to be magnetic. Also, instead of rotating the recording medium, the head may be rotated.

Furthermore, the storage means is not limited to a semiconductor memory, but may be a small memory with good responsiveness, such as a magnetic bubble memory.

Further, the detection means may be one that detects whether the rotational speed and rotational phase of the motor in the recording/reproducing means are stabilized. Further, when the recording medium has access means for accessing each track of the recording medium with a head, the completion of this access operation may be detected.

Alternatively, the trigger signal may be generated when all conditions such as rotation speed, rotation phase, and completion of access operation are stabilized.

[Effects] As described above, according to the present invention, it is possible to obtain a recording/reproducing device that does not depend on the start-up of the recording/reproducing means and exhibits less deterioration of the characteristics of the recording medium and the recording head.

Furthermore, it is possible to obtain a recording/reproducing device that can safely and reliably perform erasing, transmission/reception, etc.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of the configuration of the device of the present invention, and FIG. 2 is a block diagram showing another example of the configuration of the device of the present invention. DESCRIPTION OF SYMBOLS 1... Magnetic sheet, 2... Motor, 3... Magnetic head, 4... Video signal input terminal, 5... Recording process circuit, 6... Recording amplifier, ? ...Reproduction amplifier, 8.Level detector, 8.Reproduction process circuit, 10.A/It converter, 11.Memory, 12.D/A converter, 13. ...Video amplifier, 14...Monitor, 15...Sync separation circuit, 16...Sync signal generator, 17...Clock generator, 18...Elimination signal generator, 18...Transmission/reception Clock generator, 20...D/A converter, 21...Transmission processing circuit, 22...Telephone line, 23...Reception processing circuit, 24...A/D converter, SW ■~SW■...Switch.

Claims (1)

[Claims] Recording and reproducing means capable of recording and reproducing video signals on a recording medium; storage means provided separately from the recording medium for storing video signals; and operation of the recording and reproducing means. A recording/reproducing apparatus comprising: a detection means for detecting stability; and a control means for transferring the video signal between the storage means and a recording medium according to the output of the detection means. . 2) The control means switches between the video signal read from the storage means and the video signal read from the recording medium according to the output of the detection means, and outputs and displays the video signal on the monitor means. The recording/reproducing device according to item 1. 3) The control means prohibits writing of the video signal reproduced from the recording medium into the storage means while transmitting or receiving the video signal via the storage means. The recording/reproducing device according to the first or second item of the scope.