JP2782532B2 - Recording and playback device - Google Patents

Description

The present invention relates to a recording / reproducing method suitable for application to a recording / reproducing device represented by, for example, an electronic still camera.

[Conventional technology]

2. Description of the Related Art In an electronic still camera that has become widespread in recent years, one frame (one field or one frame) of a video signal is recorded on one or two tracks of a magnetic disk. Therefore, the magnetic disk is controlled so as to make one revolution at a cycle of one field (1/60 second in the case of the NTSC system).

Since the magnetic disk as a recording medium is rotated at such a high speed, a large number of frames (for example, 1, 2
Or 5 frames) can be continuously photographed (continuously shot) for a desired time.

In addition, not only video signals but also audio signals can be recorded on this magnetic disk by compressing the time axis.

The video signal and the audio signal can be recorded independently of each other, or can be recorded in correspondence with each other.

[Problems to be solved by the invention]

However, conventional electronic still cameras do not have a function of so-called after-recording, or are insufficient, if at all.

That is, in order to perform after-recording, a video signal must be recorded first, and an audio signal must be recorded later. As a result, it was not possible to add a corresponding image to the recorded voice later, which was inconvenient.

The present invention has been made in view of such a situation, and it is an object of the present invention to enable after-recording of both an audio signal and a video signal.

[Means for solving the problem]

The recording / reproducing apparatus of the present invention records a first track video signal on a recording medium, and records an audio signal corresponding to the video signal recorded on the first track on a second track different from the first track. A recording / reproducing apparatus having a recording mode in which the first
A first signal processing means for adding a first code signal indicating a recording mode to a video signal to be recorded on a track, and a recording mode for a corresponding audio signal to be recorded on a second track in the recording mode. A second signal processing means for adding a second code signal, a recording means for recording signals obtained from the first and second signal processing means on the first and second tracks, respectively; Reproducing means for reproducing the recorded signals on the first and second tracks and outputting a reproduced signal; detecting means for detecting the first and second code signals from the reproduced signal; Signal processing means, recording means, and control means for controlling the operation of the reproducing means, and the control means controls the first code signal by the detecting means when reproducing the first track on which the video signal is recorded. If it is detected, the second track is reproduced by the reproducing means, and after-recording of the audio signal to the second track via the recording means becomes possible on condition that the second track is in an unrecorded state. When the second code signal is detected by the detecting means at the time of reproducing the second track on which the audio signal is recorded, the first track is reproduced by the reproducing means, and the first track is in an unrecorded state. , The after-recording of the video signal onto the first track via the recording means becomes possible.

[Action]

In the recording / reproducing method having the above configuration, when recording an audio signal later, the video signal is recorded on the first track together with the first code signal. When the video signal is recorded later, the audio signal is recorded on the second track together with the second code signal.

When the first or the second track is reproduced and the first or the second code signal is detected, the after-recording mode can be set.

Therefore, both the audio signal and the video signal can be after-recorded.

〔Example〕

FIG. 2 is a perspective view showing the configuration of an embodiment when the present invention is applied to an electronic still camera.

In FIG. 1, reference numeral 1 denotes a camera main body of an electronic still camera, and a cover 3 is opened and closed by operating a button 2 so that a magnetic disk can be mounted or detached therein.

Reference numeral 4 denotes a power switch, which is operated when the power is turned on and off. Reference numeral 5 denotes a finder for confirming a subject (not shown), and reference numeral 6 denotes an image pickup optical axis for photographing the subject.

8 and 9 are an up switch and a down switch, respectively, which are operated when increasing or decreasing a predetermined number displayed on the LCD panel 7. Reference numeral 10 denotes a mode switch which is operated when selecting a mode. Reference numeral 11 denotes a select switch, which is operated when the mode displayed on the LCD panel 7 is selected in more detail.

Reference numeral 12 denotes a flash switch, and reference numeral 13 denotes an EF switch, which are operated when selecting a mode using a flash or a mode for setting an exposure multiple. Reference numerals 14 and 15 denote a wide switch and a tele switch, respectively, which are set in the wide direction or the tele direction of zooming. Reference numeral 16 denotes a video release switch that is operated when shooting.

An output terminal 17 outputs an audio signal and a video signal to a monitor device (not shown) connected thereto. A switch 18 is operated when switching between the AV mode and the dubbing mode.

Reference numeral 21 denotes a voice adapter.
Attached to. Reference numeral 22 denotes a microphone attached to the front of the audio adapter 21, and reference numeral 23 denotes a sound collection switch operated when collecting an audio signal from the microphone 22. Reference numeral 24 denotes an audio release switch operated when recording the collected audio signal on a magnetic disk. Reference numeral 25 denotes an LCD panel provided on the audio adapter 21, and reference numeral 26 denotes a sound collection cancel switch operated when deleting a collected audio signal. Reference numeral 27 denotes a switch for switching the time compression mode.

FIG. 1 is a block diagram showing the configuration of an embodiment of the internal circuits of the camera body 1 and the audio adapter 21.

In the camera body 1 shown in FIG. 1, a lens 31 is driven by a zoom drive circuit 32. Reference numeral 33 denotes an image sensor such as a CCD on which light condensed by the lens 31 is incident. Reference numeral 34 denotes an imaging circuit which reads a video signal from the image sensor 33 and outputs the video signal to the video signal processing circuit 35. The output of the video signal processing circuit 35 is supplied to the output terminal 17.
Reference numeral 36 denotes a flash control circuit, which drives a flash light emitting unit 37.

A switch 41 selects an audio signal or a video signal to be recorded and outputs the selected signal to the FM modulation circuit 42. The output of the FM modulation circuit 42 passes through a recording amplifier 43 and a switch 44,
It is supplied to the magnetic head 45.

A spindle motor drive circuit 46 drives the spindle motor 47. Reference numeral 48 denotes a magnetic disk on which audio and video signals are recorded, and 49 denotes a PG coil that generates a PG pulse corresponding to the rotation phase of the magnetic disk 48. Reference numeral 50 denotes a head movement drive circuit which moves the magnetic head 45 in a direction perpendicular to the track. 51 is a reproduction amplifier, 52 is an FM demodulation circuit, which amplifies and demodulates a reproduction signal output via the switch 44, respectively.

Reference numeral 61 denotes a detection unit which detects whether or not a monitor is connected to the output terminal 17. A system controller 62 controls the operation of the camera body 1. Also, 63 and 64 are
It is detected whether the audio adapter 21 is attached to the camera body 1 or whether there is an erroneous erasure preventing claw on a case (not shown) of the magnetic disk 48, respectively.

16A and 16B are switches that are turned on when the video release switch 16 is half-pressed or completely pressed.

On the other hand, in the audio adapter 21, reference numeral 71 denotes an amplifier, and reference numeral 72 denotes an audio signal processing circuit, each of which amplifies and processes a signal input from the microphone 22. 73 is a switch, A /
Select a signal to be input to the D converter 74. Reference numeral 75 denotes a RAM, which stores collected audio signals. Reference numeral 76 denotes a digital signal processing circuit, which includes an A / D converter 74, a RAM 75,
The operation of the D / A converter 77 is controlled.

Reference numeral 78 denotes a switch, which selectively outputs the audio signal output from the D / A converter 77 to the compressed audio recording processing circuit 79 or the audio signal processing circuit 80. The output of the compressed sound recording processing circuit 79 is supplied to the FM modulation circuit 42 via the switch 41.
The output of the audio signal processing circuit 80 is output to the output terminal 17. Reference numeral 81 denotes a compressed sound reproduction processing circuit which processes an audio signal output from the FM demodulation circuit 52 and
The signal is supplied to an A / D converter 74 via 73.

A system controller 82 controls the operation of the audio adapter 21.

The switch 44 and the switches 73 and 78 are controlled by the system controllers 62 and 82, respectively, and are switched to the terminal REC during recording and to the terminal PB during reproduction, respectively. Also,
The switch 41 is switched to the terminal VIDEO or the terminal AUDIO by the system controller 62 when recording a video signal or an audio signal.

 Next, the basic operation will be described.

Light from the subject is transmitted to the image sensor via the lens 31.
It is incident on 33 and photoelectrically converted. The imaging circuit 34 reads out the imaging signal of the image sensor 33 and outputs it to the video signal processing circuit 35. The video signal processing circuit 35 processes the signal, converts the signal into, for example, an NTSC video signal and outputs the video signal to a monitor connected to the output terminal 17.

The user looks at the monitor or checks the subject through the viewfinder 5.

When the use of the strobe switch 12 is instructed by the operation of the strobe switch 12, when the video release switch 16 is completely pressed, the system controller 62 drives the strobe light emitting unit 37 via the strobe control circuit 36, and Irradiate light on the unoccupied subject.

When the video release switch 16 is completely pressed, the video signal output from the video signal processing circuit 35 is
The signal is input to the FM modulation circuit 42 via the switch 41 and is FM-modulated. This modulation signal is amplified by the recording amplifier 43,
It is supplied to the magnetic head 45 via the switch 44. At this time, the spindle motor 47 is driven via the spindle motor drive circuit 46, and the magnetic disk 48 is rotating at a speed of 3600 rpm. Thus, the video signal is recorded on the magnetic disk 48.

At this time, the system controller 62 outputs the DPSK signal to the video signal processing circuit 35. Video signal processing circuit 35
Superimposes this DPSK signal on the video signal. Therefore, on each track, the DPSK signal is recorded while being superimposed on the video signal.

On the magnetic disk 48, for example, 50 tracks are formed concentrically. One track records a video signal of one field. 1 frame can be selected by 1
The video signal is a field or a two-field (one frame) video signal.

When changing tracks, the head movement drive circuit 50
The magnetic head 45 is moved to the inner circumference or the outer circumference.

On the other hand, when recording an audio signal, the changeover switch 27 first sets the time compression mode. As a result, for example, any of the sound collection times of 5 seconds, 10 seconds, and 20 seconds is set.

When the sound collection switch 23 is operated at a predetermined timing, the audio signal input from the microphone 22
The signal is amplified by the amplifier 71 and input to the audio signal processing circuit 72. The audio signal processing circuit 72 removes unnecessary high frequency components of the input audio signal and adjusts the level. This audio signal is supplied to the A / D converter 7 via the switch 73.
4 and converted to a digital signal. This digital signal is stored in the RAM 75 with its time axis compressed.

In this way, an audio signal of, for example, 5 seconds, 10 seconds, or 20 seconds is stored in the RAM 75 in real time.

Next, when the audio release switch 24 is turned on, the audio signal stored in the RAM 75 is read out by the digital signal processing circuit 76. The digital signal processing circuit 76 adds a control code to the audio signal and outputs the audio signal to the D / A converter 77.

The audio signal converted to an analog signal by the D / A converter 77 is input to the compressed sound recording processing circuit 79 via the switch 78. The compressed audio recording processing circuit 79 supplies the audio signal to the FM modulation circuit 42 via the switch 41 after performing processing such as pre-emphasis.

In this way, the time-base compressed audio signal is recorded on one track together with the control code.

As will be described in detail later, in the audio post-recording mode, when the audio release switch 24 is turned on, the audio signal stored in the RAM 75 is read, and one of the tracks on which the corresponding video signal is recorded is read. It is recorded on the inner track.

The signal reproduced from the magnetic head 45 is input to the reproduction amplifier 51 via the switch 44, amplified, and then FM-demodulated by the FM demodulation circuit 52.

This demodulated signal is input to the video signal processing circuit 35 in the case of a video signal. The video signal processing circuit 35 outputs this video signal to a monitor connected to the output terminal 17. Since the magnetic head 45 repeatedly reproduces the same track, a still image is displayed on the monitor.

At this time, the video signal processing circuit 35 detects the DPSK signal and outputs the signal to the system controller 62.

If the demodulated audio signal is an audio signal, the audio signal is input to a compressed audio reproduction processing circuit 81 and subjected to processing such as de-emphasis. The audio signal output from the compressed audio reproduction processing circuit 81 is input to the A / D converter 74 via the switch 73, and is converted into a digital signal. This digital audio signal is written into the RAM 75.

At this time, the digital signal processing circuit 76 reads the control code input together with the audio signal, and outputs the control code to the system controller 82.

The audio signal written in the RAM 75 is read out by the digital signal processing circuit 76 after extending the time axis.
After being converted into an analog signal by the A converter 77, the signal is input to the audio signal processing circuit 80 via the switch 78. The audio signal processing circuit 80 supplies the input audio signal to the monitor connected to the output terminal 17 after removing unnecessary high frequency components and adjusting the level.

When reproducing the correspondingly recorded video signal and audio signal, first, the audio signal is reproduced and the RA signal is reproduced.
Written to M75. Thereafter, the magnetic head 45 is moved to one outer track, and the video signal recorded there is repeatedly reproduced as a still image. At this time, the audio signal is read out from the RAM 75 with the time axis extended and read out at the same time.

 FIG. 3 is a front view of one embodiment of the LCD panel 7.

When the detecting unit 61 detects that the monitor is not connected to the output terminal 17, the mode displayed on the LCD panel 7 is changed to the mode shown in FIG. Changes as shown.

That is, each time the mode switch 10 is pressed once, the shooting mode, the mode, the white balance (WB) mode,
The mode cycles in the order of year / month / day / minute / second setting mode.

Further, for example, when the select switch 11 is operated in a state where the shooting mode is set by operating the mode switch 10, single (Single), self (Self), continuous shooting 1, continuous shooting 2, and continuous shooting 5 are sequentially performed. , The shooting mode cycles.

FIG. 5 shows how the display of the LCD panel 7 changes in this case.

Single is a mode for taking one frame.
This is displayed by lighting the figures of the photographs. The self mode is a mode for photographing using a self-timer, and is displayed by turning on a clock-shaped figure. The continuous shooting is a mode in which shooting is continuously performed while the video release switch 16 is fully pressed, and figures of three photographs and numerals 1, 2, or 5 are lit. This number is 1
It represents the number of frames shot in a second.

When the mode is selected by the mode switch 10,
By further operating the select switch 11, each mode of Rec Normal (RecNormal), Rec AV (RecAV), and Erase (Erase) is circulated.

FIG. 6 shows a change in display in this case. For REC Normal, REC and NORMAL characters are REC AV, REC and AV characters are for Erase,
The letters SE are blinking.

These modes are modes for recording a video signal or an audio signal independently, recording a video signal and an audio signal correspondingly, or erasing a recorded video signal or an audio signal, respectively. .

In the white balance mode, AUTO, cloudy, sunny, fluorescent lamps and lamps are circulated, and the display changes as shown in FIG. 7 in accordance with this circulation.

In other words, along with WB characters, AUTO characters, cloud shapes, sun shapes, fluorescent light shapes, or lamp shapes
Each is lit.

The color temperature reference value is changed corresponding to each of these modes.

In the year / month / day / minute / second setting mode, the mode switch
By the operation of step 10, the year, month, day, hour, minute, and second mode is set.

In the case of the date mode, as shown in FIG. 8, the date at that time is displayed, and the symbol of the hyphen between the dates is flashed. Then, in response to the operation of the select switch 11, each display of the year, month, and day flashes sequentially.

In the case of the hour, minute, second mode, as shown in FIG. 9, the time at that time is displayed, and the colon symbol between the hour, minute, and second flashes. And, in response to the operation of the select switch 11,
The hour, minute and second indications flash sequentially.

On the other hand, when the monitor is connected to the output terminal 17,
If detected by the detection unit 61, the mode switch
When the mode is selected by 10, the mode is changed in response to the operation of the select switch 11, as shown in FIG.

In other words, Play, Erase, Monitor normal, Monitor AV
AV) mode is sequentially cycled. These are used to reproduce the recorded video signal or audio signal, respectively.
This is a mode for erasing, recording a monitored video signal or audio signal independently, or recording a monitored video signal and an audio signal correspondingly.

Then, these modes are displayed as shown in FIG. In other words, the play is indicated by the blinking PLAY
Erase is indicated by the blinking of the letters ERASE, monitor normal is indicated by the lighting of the letters REC, and blinking of the letters NORMAL and MONITOR.
Each is displayed by the blinking ITOR characters.

Further, in the play mode, when the video signal or the audio signal can be after-recorded, when the select switch 11 is operated, the mode shifts to the video post-recording mode or the audio post-recording mode instead of the erase mode. Then, when the select switch 11 is operated again, the mode shifts to the play mode again.

Although a dedicated switch for setting after-recording can be provided, as described above, the mode switch 10 for selecting a mode and the select switch 11 are also used as switches for setting after-recording. The number can be reduced and the space can be used effectively, which is advantageous for miniaturization.

In the case of the audio post-recording mode and the video post-recording mode, the display on the LCD panel 7 and the LCD panel 25 is the twelfth
As shown in FIG. 13 and FIG.

In the case of the audio post-recording mode, as shown in FIG. 12, on the LCD panel 7, the letters PLAY and AV are turned on, and simultaneously, the letters REC are blinked. Also, the number of the track to be recorded after (08 in the case of the embodiment)
Is displayed with the date.

On the LCD panel 25, the letters REC are turned on, and the letters AUDIO are blinked. At this time, the recording time of the audio signal (10 seconds in the embodiment) set by the changeover switch 27 is also displayed.

On the other hand, in the video post-recording mode, the display on the LCD panel 7 is the same as in the audio post-recording mode, as shown in FIG. not,
VIDEO flashes.

At this time, together with the recording time (10 seconds in the embodiment) set when recording the corresponding audio signal,
A symbol that indicates the length of the audio signal actually recorded is displayed. In the case of the embodiment, depending on the number of bars,
Its length is indicated. In this embodiment, since the number of bars is 10, an audio signal for 10 seconds is recorded. That is, in this embodiment, one bar represents one second. If the set recording time is 20 seconds, one bar represents 2 seconds.

As described above, the display is different between the case where the video signal is after-recorded and the case where the audio signal is after-recorded, so that it is difficult for the user to determine which signal should be after-recorded. Is prevented.

Further, when the track on which the corresponding video signal is recorded is reproduced in a state where the audio signal has not been recorded yet, the display becomes
As shown in Fig. 14.

That is, at this time, PLAY and A
The letter V is illuminated, and the number of the track being reproduced (08 in the embodiment) is displayed together with the date (of course, the hour, minute, and second can be used).

On the other hand, on the LCD panel 25, the characters PLAY and VIDEO are turned on, and the character AUDIO blinks because no audio signal has been recorded yet.

Similarly, when the track on which the corresponding audio signal is recorded is reproduced in a state where the video signal has not been recorded yet and the after-recording has been performed, the display of the track is displayed.
As shown in Figure 15.

That is, at this time, the display on the LCD panel 7 is the same as that when the audio signal is not after-recorded. However, on the LCD panel 25, the characters PLAY and AUDIO are lit, and the video signal is still recorded. Not so, VIDEO flashes. At the same time, along with the recording set time (10 seconds) of the audio signal recorded on the track being reproduced, an indication of the length of the actually recorded audio signal is displayed.

Next, an operation for setting the video post-recording mode or the audio post-recording mode will be described with reference to the flowchart of FIG.

When the select switch 11 is turned on, if the video or audio post-recording mode has already been set, it is canceled (steps S1 and S11).

If the video or audio post-recording mode is not set, whether the connection of the monitor to the output terminal 17 is detected by the detection unit 61, the play mode, the reproduction is being performed, or the detection unit 63 is to the camera body 1 Voice adapter
It is determined whether the mounting of No. 21 is detected and whether the erroneous erasure prevention nail is detected by the detection unit 64 (S2 to S
6). When any one of these is not detected, the after-recording mode is not set.

When all of these are detected, the video post-recording mode is set if video post-recording is possible, and the audio post-recording mode is set if audio post-recording is possible (S7 to S10).

Whether or not video dubbing is possible is determined according to the flowchart shown in FIG.

First, if a predetermined track is reproduced and the reproduced signal is not an audio signal, there is no audio signal which is a prerequisite for video dubbing, so that video dubbing is disabled (S21, S27).

If the reproduced signal is an audio signal, the control code contained therein is read (S22). The control code includes a code indicating whether the audio signal is recorded alone (normal mode) or recorded as a signal corresponding to a video signal (AV mode).

If the control code is not in the AV mode (if it is in the normal mode), video dubbing is disabled (S2
3, S27).

If the control code is in the AV mode, the head moving drive circuit 50 moves the magnetic head 45 to the outer circumference by one track, and determines whether or not the track is an empty track (S24, S25).

The corresponding video and audio signals are defined in advance so that they are recorded on adjacent outer and inner tracks, respectively. Therefore, if the outer track is not an empty track, the corresponding video signal cannot be recorded, so that video dubbing is disabled. If the track is an empty track, video dubbing is enabled (S25, S26,
S27).

On the other hand, similarly, whether or not audio post-recording is possible is determined according to the flowchart shown in FIG.

First, if a predetermined track is reproduced and the reproduced signal is not a video signal, there is no video signal which is a prerequisite for audio dubbing, so that audio dubbing is disabled (S31, S37).

If the reproduced signal is a video signal, the DPSK signal contained therein is read (S32). In this DPSK signal, the video signal is either a signal recorded alone (normal mode) or a signal corresponding to an audio signal (AV
Mode) is recorded.

If the DPSK signal is not in the AV mode (if it is in the normal mode), audio dubbing is disabled (S33, S3
7).

If the DPSK signal is in the AV mode, the head movement drive circuit 50
As a result, the magnetic head 45 is moved to the inner circumference by one track, and it is determined whether or not the track is an empty track (S34, S35).

If the inner track is not an empty track, the corresponding audio signal cannot be recorded,
Audio dubbing is not allowed, and if it is an empty track, audio dubbing is allowed (S35, S36, S3
7).

Next, referring to the flowchart of FIG. 19, the video release switch 16 or the audio release switch 24
The operation when is operated will be described.

First, it is determined whether or not the operated is the video release switch 16 (S41). When the video release switch 16 is completely pressed, the recording mode is set when the camera body 1 is set to the AV mode and the after-recording mode (S42 to S44).

Further, when the video dubbing mode is set, a video signal is recorded on the track (S4).
5, S46). Then, the playback mode is set (S47), and the twentieth mode is set.
The reproduction process shown in the flowchart of FIG.

If the operated operation is the audio release switch 24, it is determined whether an audio signal is stored (collected) in the RAM 75 (S41, S50). If the sound is not collected, the audio signal cannot be recorded on the magnetic disk 48, so that the recording operation is not performed.

When an audio signal is being collected and the AV mode or audio post-recording mode is set, the magnetic head
45 is moved to the inner circumference by one track, and an audio signal is recorded on that track (S48, S49). Thereafter, the reproduction mode is set (S47), and the reproduction process shown in the flowchart of FIG. 20 is executed.

When the camera body 1 is set to the normal mode (not the AV mode), the video signal is recorded independently when the video release switch 16 is operated, and when the audio release switch 24 is operated. Audio signals are recorded independently (S42, S51 to S5
3).

When the video release switch 16 is operated in the AV mode and the post-recording mode is not set, a video signal is recorded (S43, S54, S5).
Five). Further, if the magnetic head 45 is moved to the inner circumference of one track, and there is sound collection, an audio signal is recorded (S56).
To S58). If the audio release switch 24 has been operated, the magnetic head 45 is moved to the inner circumference of one track, and an audio signal is recorded (S54, S56 to S58).

Next, the operation of the reproducing process will be described with reference to the flowchart of FIG. 20 and the track deviation diagram of FIG.

In FIG. 21, the right direction in the figure is the magnetic disk 48.
Is defined as the outer circumferential direction. Also, A
And V represent the audio or video tracks, respectively, N and AV
Indicates a normal track and an AV track, respectively.

First, an audio exit flag (hereinafter, referred to as an AE flag) is cleared, a normal mode is set, and a -1 track deviation flag (hereinafter, simply referred to as a deviation flag) is cleared (S61 to S63). Next, the track on which the magnetic head 45 is located is reproduced, and it is detected whether the reproduced signal is a video signal or an audio signal (S64, S65).

If the deviation flag is not set and the reproduced signal is a video signal (not an audio signal), the DPSK signal is reproduced (S66 to S68). If the DPSK signal indicates that the track is not a video AV track, and if the audio adapter 21 is attached, the signal is recorded on this track.
62 determines that this track is a normal video track, and transmits this to the system controller 82 of the audio adapter 21 (S69 to S73).

That is, in this case, as shown in FIG. 21A, it is determined from the DPSK signal of the reproduced track that the track is a normal video track.

In this case, next, it is determined whether or not the reproduced signal is an audio signal, and further, whether or not the signal is recorded (S74, S75). Then, the video playback control is executed (S76). Therefore, a video signal is reproduced.

On the other hand, as shown in FIG. 21 (b), when it is determined from the DPSK signal that the track is a video AV track, the system controller 62 sets the AV mode (S70, S77). When the audio adapter 21 is not mounted, after-recording cannot be performed, and thereafter, reproduction of the track is executed (S78, S74 to S76).

When the audio adapter 21 is attached, the magnetic head 45
Is moved to the inner circumference of one track, the signal of that track is reproduced, and it is detected whether the signal is a video signal or an audio signal (S79 to S81).

In the example of FIG. 21 (b), the video signal is recorded on the inner track. As described above, in the case of the AV mode, of the adjacent tracks, the video signal is on the outer track, and the audio signal is on the inner track.
Each is recorded correspondingly. Therefore, in this case, the corresponding audio signal is not recorded contrary to the recorded content of the DPSK signal. Therefore, the track before the deviation (the outer track) is recognized as a normal video track, and the fact is transmitted to the system controller 82, and the normal mode is set (S82, S83, S87, S87).
S88).

Then, after returning to the original track, the magnetic head 45 reproduces the track (S86, S74 to S7).
6).

Also, as shown in FIG. 21 (c), when an adjacent inner track is an empty track on which no signal is recorded, an audio signal can be after-recorded there. Therefore, audio dubbing is allowed, and the system controller 82 of the audio adapter 21
Then, the fact that the original (outer peripheral) track is an AV video track is transmitted (S83 to S85).

Then, after returning to the original track, the magnetic head 45 reproduces the track (S86, S74 to S7).
6).

On the other hand, when the audio signal is reproduced from the first track, if the audio adapter 21 is not attached, the reproduction operation is processed as disabled (S67, S89, S74).

When the audio signal is reproduced from the first track while the audio adapter 21 is mounted, the audio reproduction control is executed and the audio signal is reproduced (S9).
0). The system controller 82 reads the control code included in the reproduction signal, and the system controller 62 receives this (S91).

As shown in FIG. 21 (d), when the normal track is detected from the control code of the first track and the normal mode is set, the reproduction is performed as it is (S92, S93). .

On the other hand, as shown in FIG. 21 (e), when it is detected from the DPSK signal that the first track is a video AV track, the process shifts from step S82 to S90 to read the control code of the adjacent track. Can be In the case of this example, it is detected from the control code that the track is an audio normal track, but since the first track is a video AV track, the AV mode is set. In this case, the DPSK signal of the adjacent track and the control code are inconsistent. in this case,
It is assumed that the track is a normal track (control code).

For this reason, after the magnetic head 45 is moved to the original outer track, the original track is recognized as a normal video track, and the fact is transmitted to the system controller 82, and the normal mode is set (S93 to S96). ).

Similarly, as shown in FIG. 21 (f), it is detected from the DPSK signal that the first track is a video AV track, and an adjacent inner track is identified by the control code as an audio AV track. Is detected, it means that the video signal and the audio signal have been correctly correlated and recorded. Therefore, at this time, the recording head 45 is moved to the original track, and the AE flag is set (S97 to S99).

At this time, the audio signal reproduced from the inner track is stored in the RAM 75 and output together with the video signal reproduced from the outer track.

Next, as shown in FIG. 21 (g), when it is detected from the control code that the first track is an AV audio track, the mode is changed to step S62.
Is set to normal mode by default.
Mode is changed. Then, the magnetic head 45 is moved to the outer circumference of one track, and the deviation flag is set (S97, S1).
00 to S102).

Furthermore, when the outer track is reproduced and the empty track is empty, the video signal can be recorded there, so that video dubbing is permitted, and the inner track is recognized as an AV audio track. It is transmitted to the system controller 82 (S64 to S6
6, S103 to S105).

As described above, when the first track is an AV audio track, the mode is changed to the AV mode, and the deviation flag is set, as shown in FIG. When the signal is recorded, the magnetic head 45 returns to the original track.
Also, the original inner track is recognized as a normal audio track contrary to the content of the control code, and the fact is transmitted to the system controller 82 to set the normal mode (S106 to S108, S112). .

As shown in FIG. 21 (i), the first track is an AV audio track, the mode is changed to the AV mode,
When the deviation flag is set and the outer track is determined to be a normal video track from the DPSK signal, the control code of the inner track and the outer DPSK signal are inconsistent. I have. In this case, as in the case described above, the normal mode is prioritized. Therefore, the magnetic head 45 is returned to the original track, and the track on the inner circumference is determined to be a normal audio track.
82 and set the normal mode (S69, S109, S11
0, S107, S108, S112).

As shown in FIG. 21 (j), the first track is an AV audio track, the mode is changed to the AV mode,
When the deviation flag is set and the outer track is determined to be an AV video track from the DPSK signal, the video signal and the audio signal are recorded in a corresponding manner. Become. Therefore, in this case, the AE flag is set (S109 to S11).
1).

Also, as shown in FIG. 21 (k), the first track is
When the track is an AV audio track, the mode is changed to the AV mode, and the deviation flag is set, the outer track is a video track, but the
When the DPSK signal cannot be determined, the control code and
Since there is no inconsistency between the DPSK signal and the DPSK signal, it is determined that the video signal and the audio signal are recorded in a corresponding manner. Therefore, also in this case, the AE flag is set (S109, S111).

By the way, during the reproducing operation, the magnetic head 45
Is held on the normal video track and the normal audio track, but is always held on the video track in the AV track. That is, the AV audio track is temporarily reproduced, but after the reproduction, the AV audio track is automatically moved to the AV video track and is not stored on the AV audio track. This is because if an AV audio track is reproduced once, its reproduction data is stored in the RAM 75, so that data can be reproduced from the RAM 75 thereafter.
This is because there is no need to repeatedly play the audio track.

Thus, for example, the movement of the magnetic head 45 to the inner circumference of one track is manually operated, and the magnetic head 45 is moved to that track.
When the track is moved, if the track is an AV audio track, the magnetic head 45 is automatically returned to the original AV video track on the outer periphery, and eventually, a manual operation is further performed on the inner periphery from the AV video track. It cannot be moved by the operation.

In order to avoid such an inconvenience, the operation for manually moving the up switch 8 or the down switch 9 to move the reproduction track by one track to the inner circumference or the outer circumference is shown in the flowchart of FIG. Is processed as follows.

First, whether the sending direction is the inner circumference (+1) or the outer circumference (-1)
It is confirmed whether it is (S121).

In the recording mode and when the audio adapter 21 is not attached, the above-described inconvenience does not occur. Therefore, the magnetic head 45 is moved to the inner circumference or the outer circumference by one track as instructed. (S122, S123, S13
1).

When the video or audio dubbing mode is set, the operation of the up switch 8 or the down switch 9 is ignored in order to prevent the recording track from being changed (S124).

When the magnetic head 45 is manually operated to move one track to the outer periphery (movement by one track), if the magnetic head 45 is an AV audio track, the magnetic head 45 is automatically moved to an AV video track outside the track, as described above. No inconvenience occurs. Then, the magnetic head 45 is moved according to the operation (S125, S131).

Similarly, when the AE flag is not set and audio post-recording and video post-recording are not possible, no inconvenience occurs similarly (S126 to S128).

The same applies to the case where the current track is the 49th track from the outermost track and only one track exists on the inner track (S129).

On the other hand, if the AE flag is set or audio post-recording or video post-recording is possible, the above-described inconvenience occurs. Therefore, in these cases, after one track is automatically moved to the inner circumference in advance, it is further moved one track in response to the instruction (S126 to S13).
1). That is, when a manual operation is performed to move one track to the inner circumference (movement of +1 track), the track is moved to the inner circumference of two tracks in total.

As described above, the movement to the inner circumference of one track in advance prevents the above-described inconvenience from occurring.

In the present embodiment, an inner track of the magnetic disk is used as an audio track to configure a set of video track and audio track corresponding to the AV mode. What is necessary is just to reverse the moving direction of the track.

After the track is moved, if the mode is the reproduction mode, the above-described reproduction processing is executed (S132).

In the embodiment shown in FIG. 19, the recording mode is set after the video release switch 16 is completely pressed or the audio release switch 24 is turned on.
Then, the video signal is recorded on the track where the magnetic head 45 is located at that time. In the case of an audio signal, the magnetic head 45 is further moved to the inner circumference, and the audio signal read from the RAM 75 is recorded on the moved track.

On the other hand, it is also possible to set the recording mode immediately when the after-recording mode is set, and then to perform the recording when the release switch is operated.

FIG. 23 and FIG. 24 are flow charts for explaining the processing operation when the post-recording mode shift switch or the release switch is operated in such a case.

As shown in FIG. 23, after-recording mode shift switch (mode switch 10 and select switch 1 in the embodiment)
When 1) is operated and the post-recording mode is set, first, the post-recording mode flag is read, and if it is not set, if the video post-recording is permitted, the recording mode is set and the post-recording mode flag is set. (S141, S142, S145, S146).

If audio dubbing is possible, use a magnetic head
After 45 is moved to the inner circumference of one track, the recording mode is set, and the after-recording mode flag is set (S142 to S142).
S146).

Even if the post-recording mode switch is operated, if no post-recording mode is possible, no processing is performed (S142, S143).

When the post-recording mode switch is turned on, if the post-recording mode flag is already set, if the video post-recording is enabled, the post-recording mode flag is cleared after the magnetic head 45 is moved to the inner circumference of one track. Then, the reproduction mode is set, and the reproduction process is executed (S141, S147, S151, S149, S150).

If the audio post-recording is possible, after the magnetic head 45 is returned to the outer circumference of one track, the post-recording mode flag is cleared, the reproduction mode is set, and the reproduction process is executed (S147 to S150).

That is, if the after-recording mode switch is turned on while the after-recording mode flag is already set, the after-recording mode is canceled.

Accordingly, the processing when the release switch is completely pressed is as shown in FIG. As is clear from comparing the flowchart of FIG. 24 with the flowchart of FIG. 19, in the case of the flowchart of FIG. 24, steps S44 and S48 in the flowchart of FIG. 19 are omitted. The other steps are the same as those in the flowchart of FIG.

That is, when the post-recording mode is set, the recording mode is already set, and in the case of audio post-recording, since the magnetic head 45 has already been moved to the inner track, when the release switch is turned on, these No processing is performed.

Therefore, when the processing is performed as shown in the flowcharts of FIGS. 23 and 24, a more rapid photographing and recording operation becomes possible as compared with the case of performing the processing as shown in FIG.

〔The invention's effect〕

As described above, according to the recording / reproducing method of the present invention, the code indicating that recording is performed in the AV mode (corresponding recording mode) is superimposed on the audio signal, and the AV mode (corresponding recording mode) is also included in the video signal. Since the code indicating that the recording is performed by the recording method is superimposed, it is possible to perform after-recording not only on the video signal but also on the audio signal. Therefore, the degree of freedom of photographing is improved, which is convenient.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of an internal circuit of the embodiment of FIG. 2, and FIG. 2 is a configuration of an embodiment when the recording / reproducing method of the present invention is applied to an electronic still camera. FIG. 3 is a front view of one embodiment of the LCD panel of the camera body in the embodiment of FIG. 2, and FIG. 4 is a case where the monitor is not connected in the embodiment of FIG. FIG. 5 is a mode transition diagram for explaining a mode transition by operating the mode switch and the select switch. FIG. 5 is a diagram for explaining a change in the display of the photographing mode when the select switch is operated in the embodiment of FIG. FIG. 6 is a diagram showing the state when the select switch is operated when the monitor is not connected in the embodiment of FIG.
FIG. 7 is a diagram for explaining a change in the display of the mode, FIG. 7 is a diagram for explaining a change in the display of the white balance mode when the select switch is operated in the embodiment of FIG. 4, and FIG. FIG. 9 is a view for explaining a change in the display of the date and time mode when the select switch is operated in the embodiment of FIG. 9. FIG. 9 is a diagram showing the hour and minute when the select switch is operated in the embodiment of FIG. FIG. 10 is a view for explaining a change in display in the second mode. FIG. 10 is a mode transition diagram for explaining a mode transition by operating a select switch when a monitor is connected in the embodiment of FIG. FIG. 12 is a diagram for explaining a change in the display of the mode when the select switch is operated when the monitor is connected in the embodiment of FIG. 2. FIG. Camera body and sound FIG. 13 is a view for explaining the display of the LCD panel of the adapter in the audio post-recording mode. FIG. 13 is a view for explaining the display of the LCD panel of the camera body and the audio adapter in the video post-recording mode in the embodiment of FIG. FIG. 14 is a view for explaining the display of the LCD panel of the camera body and the audio adapter in the embodiment of FIG. 2 when a video signal is being reproduced in a state where audio dubbing is possible; FIG. 16 is a diagram for explaining a display when an audio signal is being reproduced in a state where video dubbing is possible in the camera body and the LCD panel of the audio adapter in the embodiment of FIG. 2; FIG. 17 is a flowchart for explaining a select switch operation process in the embodiment of FIG. 1. FIG. 17 is a flowchart for explaining an operation for detecting a video after-recording possible in the embodiment of FIG. FIG. 18 is a flowchart for explaining the operation for detecting the possibility of audio dubbing in the embodiment of FIG. 1, and FIG. 19 is a diagram for explaining the operation when the release switch is operated in the embodiment of FIG. FIG. 20 is a flowchart for explaining the reproduction processing operation in the embodiment of FIG. 1, and FIGS. 21 (a) to (k) are flowcharts of the embodiment in FIG.
FIG. 22 is a track deviation diagram for explaining a track deviation operation of a magnetic head. FIG. 22 is a flowchart for explaining a track deviation processing operation by manual operation in the embodiment of FIG. 1. FIG. FIG. 24 is a flow chart of another embodiment for explaining the processing operation when the post-recording mode shift switch is operated in the embodiment of FIG. 24. FIG. 24 is a processing operation when the release switch is operated in the embodiment of FIG. 10 is a flowchart of another embodiment. 1 Camera body 5 Viewfinder 6 Image pickup optical axis 7 LCD panel 8 Up switch 9 Down switch 10 Mode switch 11 Select switch 16 Video release switch 17 Output Terminal 21 Voice adapter 22 Microphone 23 Sound pickup switch 24 Audio release switch 25 LCD panel 45 Magnetic head 47 Spindle motor 48 Magnetic disk

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-50585 (JP, A) JP-A-2-118964 (JP, A) JP-A-63-4474 (JP, A) JP-A-61- 204806 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G11B 20/02 H04N 5/781 510

Claims (1)

(57) [Claims] 1. A video signal is recorded on a first track of a recording medium, and an audio signal corresponding to the video signal recorded on the first track is recorded on a second track different from the first track. A recording / reproducing apparatus having a recording mode for performing recording, wherein in the recording mode, first signal processing means for adding a first code signal indicating the recording mode to the video signal to be recorded on the first track; A second signal processing unit for adding a second code signal indicating the recording mode to the corresponding audio signal to be recorded on the second track in the recording mode; and the first and second signals. The signal obtained from the processing means is
Recording means for recording on the first and second tracks respectively; reproducing means for reproducing signals on the first and second tracks recorded by the recording means and outputting reproduction signals; Detecting means for detecting the first and second code signals from the first, the first and second signal processing means, the recording means,
Control means for controlling the operation with the reproduction means, wherein the control means detects the first code signal by the detection means during reproduction of the first track on which the video signal is recorded. In this case, the second track is reproduced by the reproducing means, and after-recording of an audio signal to the second track can be performed on the second track via the recording means on condition that the second track is in an unrecorded state. On the other hand, when the second code signal is detected by the detection means at the time of reproduction of the second track on which the audio signal is recorded, the first track is reproduced by the reproduction means, After-recording a video signal to the first track via the recording means on condition that one track is in an unrecorded state. Packaging recording and reproducing apparatus, wherein a possible.