JPH06205357A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To provide the magnetic recording and reproducing device with excellent retrieval performance in which a picture with high picture quality is obtained with a simple operation even when a track on which a picture signal is recorded by the CHSV system is reproduced by the existing TV system. CONSTITUTION:A picture signal from an image pickup element 1 is recorded on a video floppy 6 being a magnetic recording medium and a picture reproduced from the video floppy 6 is displayed on a monitor 10. In this case, a recording and reproducing means 11 controls the CHSV recording reproduction and the usual recording reproduction. When usual reproduction is executed from a track of CHSV recording, a control means 12 takes precedence of frame reproduction over field reproduction or controls the display of only one pattern of a field picture or a frame picture from plural tracks covering one pattern.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing apparatus such as an electronic still camera for recording an image signal on a magnetic recording medium and reproducing the image signal recorded on the magnetic recording medium.

[0002]

2. Description of the Related Art Conventionally, as a device for recording an image signal on a magnetic recording medium and reproducing the image signal recorded on the magnetic recording medium, for example, a still video (abbreviated as SV).
The system is known. In this SV system, CC
An image signal corresponding to a subject image is formed by a solid-state image sensor such as a D or MOS type, and the formed image signal is supplied to a signal processing circuit to perform signal processing. The image signal processed here is It is recorded on a magnetic disk.

FIG. 3 shows, for example, R (red) and G on the image pickup surface.
It is a block diagram which shows the structure of the signal processing circuit of the SV system which has a solid-state image sensor with which the stripe filter of (green) and B (blue) was attached. In the figure, 200 is R,
A solid-state image sensor having G and B stripe filters attached to the image pickup surface, and R, G, and B signals output from the solid-state image sensor 200 are used when a white object is imaged by the solid-state image sensor 100. After the levels are adjusted in the amplifiers 201 to 203 so that they become equal to each other, the well-known γ correction is performed by the γ correction circuit 204.

Each of the R, G, and B signals subjected to the γ correction is supplied to a luminance signal forming circuit 208, and the circuit 208
Are sample-held respectively. Then, it is further switched at a predetermined timing, thereby wideband luminance signal Y _H is formed. The broadband luminance signal Y _H output from the luminance signal forming circuit 208 is then band-limited by the low pass filter (LPF) 210 and finally output as the luminance signal Y.

On the other hand, the R, G, and B signals are also band-limited by low-pass filters (LPF) 205 to 207 and input to the matrix circuit 209. In this matrix circuit 209, a narrow band luminance signal Y _L is formed from the input R, G, B signals, and two types of color difference signals R
-Y _L and B-Y _L are formed and output.

The luminance signal Y formed as described above is FM-modulated, and two types of color difference signals R-Y _L and B-Y are used.
_L is FM-modulated after being line-sequential, and both are frequency-multiplexed and recorded on a magnetic disk called a video floppy. Then, at the time of reproduction, the reproduced image is reproduced from the video floppy by the reproducing device, and the restored image is displayed on the TV monitor or the like. At this time, the image resolution of this SV system is in conformity with the current TV system such as the NTSC system.

By the way, in order to improve the low resolution of images in the current TV system as described above, HDTV
New TV systems such as (High Definition TV) are being put to practical use. These new TV systems are about 1000
It has a number of scanning lines and has a horizontal signal band corresponding thereto. Therefore, even in the SV system, 1000 pixels × 1000, which can be obtained in HDTV or the like.
It is necessary to develop a system that records and reproduces high-resolution still images of the order of pixels (when square pixels are removed).

Therefore, a CH for recording and reproducing a high resolution still image signal while maintaining compatibility with the conventional SV system.
An SV (Compatible High-definition Still Video) system has been proposed by the applicant. Below, this CH
The SV system will be briefly described.

FIG. 4 is a diagram showing a configuration example of a color filter attached on the image pickup surface of an image pickup element used in the CHSV system. This color filter has 13
It is composed of a checkered filter for Y signals and a line-sequentially arranged filter for R and B signals on an image sensor having a number of pixels of about 00 pixels × 1000 pixels. In the CHSV system, the luminance signal and the color difference line sequential signal are formed by outputting the signal accumulated in each pixel of the image pickup device to which the color filter shown in FIG. 4 is attached as follows. ing.

That is, the luminance signal for one field is
It is formed by outputting signals accumulated in pixels arranged every four lines like A ₁ , A _2, ..., A _i , B _i , C _i , D _i (i is positive) in the figure. Integer field of A field, B field,
Luminance signals for four fields of C field and D field are formed.

Color difference signals (C _R = R-Y, C _B = B)
-Y) because the line must be serialization, C _R by the signal stored in the pixel of the A ₁ line in FIG.
After forming the must form a C _B by a signal stored in the pixel of the B ₁ line. Therefore, C
In the HSV system, the signals stored in the pixels of A _2n and B _2n , C _2n and D _2n ( _n : integer), which are even lines of each field, are output in reverse to form a color difference line sequential signal. There is.

The luminance signal and the color difference line sequential signal for four fields thus formed are each FM-modulated, and the pilot signal for time axis fluctuation correction is superposed, and then multiplexed for each field to obtain a video. One field is recorded on each of four adjacent tracks on the floppy disk. The pilot signal is, for example, a 2.5 MHz sine wave signal shown in FIG. 6, and it is determined whether or not CHSV recording is performed by detecting the presence or absence of this pilot signal during reproduction.

FIG. 5 is a diagram showing a track recording pattern when the A field and the B field are simultaneously recorded by the two-channel head, and then the head is moved by two tracks to simultaneously record the C field and the D field. . In this case, by reproducing the B track and the D track, it is possible to reproduce a still image signal for one frame conforming to the conventional TV system by a reproducing device conforming to the conventional SV format.

Further, as shown in FIG. 6, each track has an I
The D code is DPSK modulated and frequency multiplexed,
A distinction between field recording and frame recording is recorded as an ID. Therefore, in the case of the recording pattern of FIG.
Fields, frames, and
ID recording is performed as frame and field recording.

FIG. 2 is a block diagram showing the schematic arrangement of a reproducing apparatus in the image signal recording / reproducing system as described above. In this reproducing apparatus, the signal reproduced by the magnetic head 302 from the video floppy 301 rotated by the motor 300 is supplied to the reproducing process circuit 304 and the bandpass filter (abbreviated as BPF) 308 via the preamplifier 303. Then, the reproduction process circuit 3
In 04, the FM-modulated luminance signal and the color difference line sequential signal are separated from the signal reproduced by the magnetic head 302,
Processing such as FM demodulation and de-emphasis is performed on the luminance signal, and processing such as FM demodulation and de-emphasis is also performed on the color difference line sequential signal, and then synchronization processing is performed. Thus, the reproduction Y signal, reproduced C _R signal, reproduction C
_{The B} signal is formed, and the formed reproduced Y signal is the LPF 30.
5, the reproduced C _R signal and the reproduced C _B signal pass through LPFs 306 and 307, respectively, and the signals of the extra frequency components are removed and output.

On the other hand, the signal output from the preamplifier 303 is also supplied to the BPF 308, and the BPF 3
Reference numeral 08 allows a signal having a frequency component of 2.5 MHz, which is a pilot signal for determining whether or not CHSV recording is performed, to be input to the detection circuit 309 and the PLL circuit 312. Then, the signal detected by the detection circuit 309 is input to the comparator 310, and the comparator 310 detects whether or not the level of the signal output from the detection circuit 309 has reached a predetermined level. The presence / absence of a pilot signal in the signal reproduced from the floppy disk 301 is determined, and the result is displayed on the display device 311.

The reproduced signals Y, C _R and C _B are input to the encoder 316.
Then, from the input Y, C _R , and C _B signals, for example, NT
A video signal conforming to the SC television signal is formed, and a standard still image is displayed on a standard monitor (not shown). Further, in the automatic display mode, when the comparator 310 detects that the pilot signal is present,
Based on the pilot signal separated by the BPF 308, the Y, C _R , and C _B signals are synchronized with the clock signal formed by the PLL circuit 312, and the Y, C _R , and C _B signals are A / D converter 314.
Is converted into a digital signal and stored in the image memory 315.

At this time, the reproduced digital image data of the A, C tracks and B, D tracks input from the A / D converter 314 is set in the order corresponding to the pixel position on the image pickup device of the recording device (not shown). The image processing circuit 329 performs interpolation processing. Next, an example of the interpolation processing by the image processing circuit 329 will be described with reference to FIG.

FIG. 7 shows the storage address position of the reproduced image data corresponding to the Y signal in the memory space A of the image memory 315. In the figure, ◯ indicates reproduced image data reproduced from the A and C tracks of the video floppy 301, and Δ indicates reproduced image data reproduced from the B and D tracks of the video floppy 301, respectively. Since the data of ◯ and Δ are shifted by 1/2 pixel in the horizontal direction according to the pixel position of the image sensor of the recording device,
For example, at the intermediate position between ◯ and ◯ indicated by X in the figure, the image processing circuit 329 reads the left and right image data a ₁ and a ₂ and the upper and lower image data b ₁ and b ₂ from the image memory 315, and these four The average value of the image data is calculated, and the average value data is interpolated as the data at the position of x. Then, by performing such interpolation processing, the number of image data in the horizontal direction can be doubled.

Further, the image processing circuit 329 performs LPF processing on the Y signal by a two-dimensional digital filter to extract a low frequency component, thereby forming a Y _L signal (Y _L is a low frequency component of the Y signal). and form a further (high-frequency component of the Y _H Y _{signal) (Y-Y L) Y} H signal by performing the calculation of. Then, the formed Y _L and Y _H data are stored in the image memory 315, and therefore Y _H and Y _H are stored.
The data of _L , C _R , and C _B are stored in the image memory 315. After that, each data stored in the image memory 315 is read at a predetermined clock rate.

Of the above-mentioned data, the data of Y _L , C _R , and C _B are R _L , G _L , and B in the matrix circuit 330.
The data is converted into _L data, and the adder 331 further adds the Y _H data read from the image memory 315. Then, each is converted into an analog signal by the D / A converter 332 and output as an R, G, B high-resolution signal.

Further, in the CHSV system, in addition to the CHSV recording / reproducing mode for recording and reproducing the high resolution still image signal using the four tracks as described above, the conventional S
Field recording in which a still image signal for one field is recorded on one track based on the V format, and a still image for one screen conforming to the conventional TV system is reproduced using the still image signal for one field. In a reproduction mode or by recording a still image signal for one frame on two tracks and using the still image signal for one frame, a conventional TV
It is possible to record / reproduce a still image signal in a frame recording / reproducing mode for reproducing one screen of a still image conforming to the method.

[0023]

However, in the conventional magnetic recording / reproducing apparatus, for example, N is set for a track on which a still image is recorded in the above-mentioned CHSV recording mode.
When reproducing on a current TV such as TSC, as shown in the track pattern of FIG. 5, the A and C tracks are field recordings, and the B and D tracks are frame recordings.
Since the data is recorded in D, when the current TV is reproduced, the A track is reproduced in the order of field reproduction → B, the D track is reproduced in the frame → C track is reproduced in the field. Therefore, the apparently same image is a field image, a frame image, and a continuous three-screen monitor T with the field image.
Since it is reproduced by V, there are the following problems.

The first reproduced image is a field image,
Even if a frame image of the same screen can be reproduced apparently, the user often views the screen with a field image of a screen rougher than the frame image.

When it is desired to see the frame image, it is necessary to send the track one by one.

Even if the frame image cannot be reproduced, for example, when one or both of the B track and the D track are erased, the user does not know this and searches for the presence or absence of the frame image while sending the track. Must.

In the conventional magnetic recording / reproducing apparatus,
An image recorded as a still image in CHSV recording mode requires time to reproduce, so the screen is searched on the current TV such as NTSC, but this CHSV recorded track is reproduced on the current TV. In this case, the order of the above-mentioned field reproduction of the A track → frame reproduction of the B and D tracks → field reproduction of the C track is automatically performed (AUT
The O) mode and the forced field mode in which field images are reproduced in the order of A → B → D → C tracks have the following problems.

That is, in the CHSV track, A
-The reproduced image of the current TV on the D track looks like the same image, so in order to reproduce the next captured image, the track feed operation is the same three times in the AUTO mode and four times in the forced field mode. There is the annoyance of having to look at the same image as many times as possible,
It takes a lot of time to search for a desired shooting screen (gauge).

The present invention has been made by paying attention to the problems as described above. Even when a CHSV recorded track is reproduced by an existing TV system, a high quality image can be viewed with a simple operation. It is an object of the present invention to provide a magnetic recording / reproducing device that can be searched and has good searchability.

[0030]

The magnetic recording / reproducing apparatus of the present invention is configured as follows.

(1) First recording / reproducing means for recording an image signal on one or two tracks on a magnetic recording medium and reproducing a field image or a frame image from the recorded image signal, and the first recording / reproducing means. A second recording / reproducing unit having upward compatibility with the tracks recorded by the reproducing unit and recording / reproducing an image signal for one screen by using more than two tracks on the magnetic recording medium. The control means is provided for preferentially displaying the frame image when the image signal is reproduced by the first recording / reproducing means from the track recorded by the second recording / reproducing means and is displayed on the monitor.

(2) First recording / reproducing means for recording an image signal on one track or two tracks on a magnetic recording medium and reproducing a field image or a frame image from the recorded image signal, and the first recording / reproducing means. A second recording / reproducing unit having upward compatibility with the tracks recorded by the reproducing unit and recording / reproducing an image signal for one screen by using more than two tracks on the magnetic recording medium. When the image signal is reproduced by the first recording / reproducing means from the track recorded by the second recording / reproducing means and displayed on the monitor, one screen of a field image or a frame image is displayed from a plurality of tracks for one screen. Control means were provided.

(3) In the apparatus of (2) above, the magnetic head is moved to the head position of the track of the next photographing screen after the field image or the frame image is reproduced by the control means.

(4) The apparatus of (2) above is provided with a mode for forcibly reproducing the field image and a mode for selecting and reproducing the image with the best image quality.

[0035]

According to the present invention, in a magnetic recording / reproducing apparatus having means for determining whether or not CHSV recording is performed, when a CHSV recorded track is reproduced on a current TV such as NTSC, the frame is preferentially reproduced. By doing so, it is possible to save the labor of operation and provide the user with an image of higher quality than in the field reproduction.

According to the present invention, the retrievability can be improved by reproducing only one screen for each shot shot.

[0037]

1 is a block diagram showing a schematic configuration of a magnetic recording / reproducing apparatus according to an embodiment of the present invention, showing an example applied to an electronic still camera of a CHSV system. In the figure, reference numeral 1 is an image pickup device such as a CCD, which corresponds to the solid-state image pickup device 200 of FIG.

Reference numeral 2 is a recording processing circuit for performing processing such as modulation on the image signal from the image pickup device 1, 3 is a recording amplifier,
Reference numeral 4 is a switch circuit for switching the signal path between recording and reproduction, 5 is a magnetic head for recording and reproducing an image signal with respect to a video floppy 6 which is a magnetic recording medium, and 7 is a motor for driving the video floppy 6. , These are similar to those shown in FIG.

Reference numeral 8 is an amplifier for amplifying a signal reproduced from the video floppy 6, 9 is a reproduction processing circuit for performing reproduction processing such as demodulation, 10 is a monitor for displaying a reproduced image, and 11 is recording / reproduction of a normal SV system. A recording / reproducing means having a first recording / reproducing function and a second recording / reproducing function of the CHSV system, and 12 is a control means for controlling the recording / reproducing.

The recording / reproducing means 11 is a first recording / reproducing means for recording an image signal on one track or two tracks on the video floppy 6 and reproducing a field image or a frame image from the recorded image signal. Second recording / reproducing means having upward compatibility with the tracks recorded by the first recording / reproducing means and recording / reproducing an image signal for one screen by using more than two tracks on the video floppy 6; It consists of Then, the control means 12 can preferentially display the frame image when the image signal is reproduced from the track recorded by the second recording / reproducing means by the first recording / reproducing means and displayed on the monitor 10. It is like this.

Further, the control means 12 controls the field from a plurality of tracks for one screen when reproducing the image signal from the track recorded by the second recording / reproducing means by the first recording / reproducing means and displaying it on the monitor 10. It is also possible to control so that only one screen of the image or frame image is displayed.

Further, in this system, there is also a reproducing mode in which the magnetic head 5 is moved to the head position of the track of the next photographing screen after the field image or the frame image is reproduced by the control means 12, and the field image is forcibly reproduced. I have it.

FIG. 8 is a flow chart showing the operation of the circuit having the above configuration, and here, only the reproducing operation will be described. When the video floppy 6 is inserted into the player side of this apparatus, the reproducing operation of this system starts (step S1).
At this time, there are three kinds of reproduction modes, "automatic (AUTO)", "automatic frame (AUTO-Frame)" and "forced field (Field)", and the mode is the automatic mode when the power is turned on. Next, the flow of operation in each mode will be described in order.

First, in step S2, it is determined whether or not the forced field mode is set. In the forced field mode, field reproduction is started on the current TV without moving the magnetic head 5 (step S3). Then, when advancing to the next track, the magnetic head 5 is fed by one track (step S4), and the process returns to step S2 again.

If the field is not the compulsory field in step S2, the process proceeds to step S5 to determine whether or not the automatic frame mode is set. At this time, if the automatic frame mode is not selected, the reproduction mode is regarded as the automatic mode, and the process proceeds to step S6. In this step S6, (a) the current track is overlaid with the pilot signal C
HSV recording tracks, (b) there are four tracks required for CHSV reproduction, and (c) the user desires CHSV reproduction, that is, C
When HSV reproduction is permitted, the process proceeds to step S7, and CHSV reproduction is performed on the high definition TV.

Further, during the CHSV reproduction, or when the CHSV reproduction is not permitted in step S6, the magnetic head 5 is not moved, and the track on the head is used for the field head and the track on the outer peripheral side is used for the frame head. Whether or not frame recording is performed is determined by ID detection (step S8). If frame recording is performed and there are two tracks required for frame reproduction, frame reproduction is performed on the current TV (step S9). For the next head transfer, the frame head for two tracks is sent when the reproduction in step S9 is performed by the frame head, and the one head is sent for the frame reproduction of the previous screen when the reproduction is performed by the field head. Therefore, the field head for one track is sent (step S10). afterwards,
Return to step S2.

If it is determined in step S8 that the frame recording is not performed, the track is regarded as field recording and field reproduction is performed on the current TV (step S8).
11). Then, when reproducing the next screen, the one-track head is advanced (step S12), and the process returns to step S2.

When the automatic frame mode is selected in step S5, it is determined whether or not CHSV recording is performed on the track on the head of the field head and the track on the outer peripheral side of the frame head (step S1).
3). At this time, if NO, the process proceeds to step S8 and the current T
The above flow is followed, such as performing frame or field playback at V. However, in the case of a CHSV recorded track, permission for CHSV reproduction is checked as described above (step S14).

If CHSV reproduction is permitted, CHSV reproduction is performed on the high definition TV (step S1).
5). After this CHSV reproduction operation, or step S1
When it is determined that the CHSV reproduction is not permitted in step 4, step S1
Go to 6. In this step S16, there is a possibility that the CHSV recorded 4 tracks have become 4 tracks or less due to track erasing or the like, so the head is searched to determine whether or not frame reproduction is possible. If the frame can be reproduced, the head is moved so that the frame can be reproduced, and the frame is reproduced (step S17).

That is, the frame head is located on the B and D tracks in FIG. 5, and the field head is B.
After the track is traced and the information is stored in the memory or the like, the track is moved to the D track and similarly read into the memory or the like, and then the frame reproduction is performed. Further, when reproducing the next screen, the head portion on the outer peripheral side of the frame head is moved so that the head portion of the field head is positioned at the head track of the track group forming the next screen.

That is, in the case of the frame head on the B and D tracks, it is sent to the inner circumference side by three tracks, and in the case of the field head on the D track, it is sent to the inner circumference side by two tracks. Return to S2. If it is determined in step S16 that the frame cannot be reproduced, field reproduction is performed on the innermost track of the tracks forming the same screen (step S19). And
When reproducing the next screen, the head is moved by one track (step S20), and the process returns to step S2.

As described above, in the present embodiment, in the magnetic recording / reproducing apparatus having means for discriminating whether or not CHSV recording, automatic mode for discriminating and reproducing CHSV recording, frame recording and field recording automatically, forced In addition to the forced field mode in which the field reproduction is performed, an automatic frame mode for prioritizing the frame reproduction is provided for reproducing the current TV such as NTSC in the CHSV recording track. As a result, it is possible to automatically give priority to the frame reproduction from the CHSV recording track in which the field recording and the frame recording are mixed, and the user can easily perform the frame of higher image quality than the field image without any special operation. The image can be provided to the user. Moreover,
Since it is automatically determined whether the frame image can be played,
For example, even when one or both of the B track and the D track are erased and the frame cannot be reproduced, the player automatically reproduces the field image, so that the user needs time and effort to reproduce (search) the frame image. Also, it is possible to realize a highly convenient device.

Further, as another embodiment, the above-mentioned CHSV is used.
Good searchability can be obtained by setting the following three automatic frame modes provided for reproduction on the current TV such as NTSC in the recording track.

(I) For one shot shot by CHSV, only one screen is reproduced on the current TV such as NTSC. (Ii) Prioritize reproduction of frame images. (iii) After reproducing one screen, the magnetic head is sent to the first track of the next image (CHSV, frame, etc.) by one track feed operation.

That is, even when a plurality of apparently the same images are reproduced on the current TV such as CHSV recording, in the automatic frame mode, the frame image is prioritized over the field image and only one screen is reproduced, and after the reproduction. In the track feed, the magnetic head jumps to the first track of the next shot image, so the content of the shot can be confirmed in a better image with one track feed operation, and the user can be quickly searched. be able to.

[0056]

As described above, according to the present invention, an image is reproduced using a smaller number of tracks than a plurality of tracks on a magnetic recording medium on which an image signal for one screen is recorded. In this case, since the frame image is preferentially displayed, there is an effect that even when the CHSV recorded track is reproduced by the current TV system, a high quality image can be viewed with a simple operation. is there.

Further, when the image signal is reproduced and displayed on the monitor, one screen of a field image or a frame image is displayed from a plurality of tracks for one screen, so that good searchability can be obtained. There is.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of a playback device of a CHSV system.

FIG. 3 is a block diagram showing a configuration of a signal processing circuit of the SV system.

FIG. 4 is an explanatory diagram showing a configuration example of a color filter of a CHSV system.

FIG. 5 is an explanatory diagram showing a track recording pattern of a CHSV system.

FIG. 6 is an explanatory diagram showing frequency allocation of the SV system.

FIG. 7 is an explanatory diagram showing reproduced image data in the image memory of FIG.

FIG. 8 is a flowchart showing the operation of the circuit of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Image sensor 5 Magnetic head 6 Video floppy (magnetic recording medium) 10 Monitor 11 Recording / reproducing means 12 Control means 200 Solid-state image sensor 301 Video floppy 302 Head

Claims (4)

[Claims] 1. One track or two on a magnetic recording medium
An image signal is recorded on a track, and a field image or a frame image is reproduced from the recorded image signal.
The above-mentioned recording / reproducing means and the tracks recorded by the first recording / reproducing means are upward compatible with each other, and an image signal for one screen is recorded / reproduced by using more than two tracks on the magnetic recording medium. Second recording / reproducing means, and when the image signal is reproduced from the track recorded by the second recording / reproducing means by the first recording / reproducing means and displayed on the monitor, the frame image is preferentially displayed. A magnetic recording / reproducing apparatus comprising a control means. 2. One track or two on a magnetic recording medium
An image signal is recorded on a track, and a field image or a frame image is reproduced from the recorded image signal.
The above-mentioned recording / reproducing means and the tracks recorded by the first recording / reproducing means are upward compatible with each other, and an image signal for one screen is recorded / reproduced by using more than two tracks on the magnetic recording medium. A second recording / reproducing means, from a plurality of tracks for one screen when an image signal is reproduced from the track recorded by the second recording / reproducing means by the first recording / reproducing means and displayed on a monitor. A magnetic recording / reproducing apparatus comprising a control means for displaying one screen of a field image or a frame image. 3. The magnetic recording / reproducing apparatus according to claim 2, wherein the magnetic head is moved to the head position of the track of the next photographing screen after the field image or the frame image is reproduced by the control means. 4. The magnetic recording / reproducing apparatus according to claim 2, further comprising a mode for forcibly reproducing a field image and a mode for selecting and reproducing an image having the best image quality.