JP2810160B2 - Camera device and camera recording system - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera recording system using a television camera and a VTR, and more particularly to a system suitable for capturing images at a landscape angle wider than the current one. is there.

[Conventional technology]

In current television systems such as NTSC and PAL,
The aspect ratio of the horizontal and vertical length of the screen is 4:
3. Naturally, cameras and displays are designed based on this. But recently this was 5: 3,14:
There have been proposals to make the screen wider than the current one, such as 9,16: 9, to make it more realistic like a movie screen. In that case, cameras and displays with screens that are longer than this, while basically complying with the NTSC system, etc., will appear. FIG. 2 illustrates an image on a display to grasp the specific image.

In FIG. 2, three spherical objects 1 arranged in a row in the horizontal direction are vertically separated by a camera 2A having a current 4: 3 aspect ratio and a wide camera 2B having a 16: 9 horizontal landscape angle. It is assumed that images are taken with the same angle of view in the directions. When the output of the wide camera 2B is projected on, for example, a 16: 9 wide display 3B, the three objects 1 are assumed to be fully projected in the horizontal direction ((d) in the figure). If this output is displayed on the current 4: 3 display 3A, it becomes a vertically elongated image ((c) in the figure) compressed in the horizontal direction to 3/4. A normal image can be obtained by providing a converter at the input section of the display 3A and deleting either side (f) or narrowing the operation range in the vertical direction (g). On the other hand, if the output of the current camera 2A is projected on the display 3A ((a) in the figure), the output is projected spherically, but the angle of view in the horizontal direction is narrow, so that both sides cannot be projected. When this output is projected on the wide display 3B, it becomes a horizontally long image (b) expanded 4/3 times in the horizontal direction, or a spherical image (e) while blanking both sides by the action of the internal converter. Become.
(Because the wide display 3B will appear in the future,
The inclusion of this converter, which exchanges when a 4: 3 signal is input, can also be assumed. ) Because wireless transmission of wide signals involves technical problems,
At home, a wide-angle camera, or one that integrates it with a VTR, precedes, and may become widespread as a self-made software production system.

As a means for widening the camera in the lateral direction, for example, a method using an anamorphic optical system or a fiber plate as disclosed in Japanese Patent Application Laid-Open No. 61-121577 is known.

[Problems to be solved by the invention]

The above cited example discloses a method for widening the current camera in the horizontal direction, but does not disclose a connection to a VTR, a viewfinder, etc., which are used together during shooting, and is easy to use for customers. There was not enough consideration for improvement. Especially in the case of wide screen compatible, it is necessary to switch between 4: 3 imaging and recording in order to emphasize compatibility with the current system, so that the switching operation must not be complicated .

SUMMARY OF THE INVENTION It is an object of the present invention to provide a camera recording system for a wide-screen television which is easy to use and has less troublesome switching operation.

[Means for solving the problem]

In order to achieve the above object, in a representative embodiment of the camera recording system of the present invention, a user is required to use a wide NTS camera.
1 for selecting which of C and the current NTSC to image
Switches, one lens barrel, and one solid-state image sensor compatible with wide NTSC. When the output of this image sensor is received, if the user wants to take an image in wide NTSC, it is passed through as it is. If you want to shoot with the current NTSC, add a time axis expansion circuit that converts this to the current NTSC signal with an aspect ratio of 4: 3, and a feature to know later which signal was picked up. The VTR unit that records and plays back, the captured signal is projected when the VTR unit is stopped and recording, the playback signal is projected during playback, and the entire field of view always causes image distortion due to the difference in aspect ratio It is composed of one wide NTSC-compatible review finder that displays images without any error and displays characters indicating which signal is being displayed.

[Action]

The above-described switch automates the switching of the components that require the switching of the operation due to the difference in the aspect ratio, and reduces the number of switching steps required by the user to one. Further, the time axis expansion circuit converts the aspect ratio as needed. By allowing the VTR unit to know which signal it is at the time of recording (adding an identification signal or switching the recording FM frequency), the signal can be distinguished at the time of reproduction. In the review finder, the entire angle of view of a signal to be imaged can be confirmed without distortion due to a difference in aspect ratio, and no strange feeling is given. In addition, by the character display,
The possibility of erroneous operation is reduced.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention relates to a recording system including a camera, a VTR, an review finder, and the like. First, a camera unit will be described.

Although there are a plurality of portions where the operation must be switched depending on whether the image is taken with the wide NTSC or the current NTSC, the present invention does not switch the optical system (lens) of the camera. This is different from the cited example.

Also, when selecting which one to take an image, the user needs only one switch operation attached to the housing, and all the accompanying switching is automated, so that the operation is not complicated. To do.

The camera's imaging unit is of course the wide NTSC aspect ratio 16: 9
Is required. When shooting with wide NTSC, the signal may be output as it is, but normal NTSC
In the case of imaging with, the angle of view in the horizontal direction must be narrowed. There are the following two methods.

(1) The horizontal scanning width of the imaging unit is sandwiched.

(2) After taking out the output with wide NTSC, expand the time axis of the central 3/4 in the horizontal direction to 4/3 times the time axis, and remove the side part. (Of course, the horizontal scanning period must not be changed.) The method (1) is relatively easy in the case of an imaging tube, but even if it is possible in principle with solid-state imaging devices such as CCD and MOS, The configuration of the signal read control unit becomes extremely complicated and impractical.

The method (2) requires a line memory, but is easy to realize.

In the present invention, the image is read out from the image sensor using a wide NTSC signal regardless of whether the image is captured by the wide NTSC or the current NTSC. By switching the operation of the expansion circuit in the subsequent stage, it is possible to select whether to output the current NTSC instead of the current NTSC or to output the wide NTSC. The operation of the expansion circuit is shown in the waveform diagram of FIG.

In FIG. 3, (a) shows a wide NTSC signal having an aspect ratio of 16: 9, which is an output of the image sensor. If you want to capture in wide NTSC, you can just output as it is, but the aspect ratio is 4:
If an image is picked up using the current NTSC signal of No. 3, it is converted and output as shown in FIG. 3 (b). That is, A → B and E → F in FIG.
Since (= A) is the horizontal blanking period, the data is output as it is without decompression. B → C and D → E in FIG. 3 (a)
Is a lateral side portion that is widened by widening, and is removed by stopping supply of a write clock to the memory. Since C → D in FIG. 3 (a) is a part that matches the angle of view of the current NTSC, writing to the memory with a clock of a certain frequency and reading with a clock of a frequency three-fourths that of the memory, the time axis is Extend 4/3 times and put in the original period of B → E. In this way, you can convert to the current NTSC. More specifically, it is described in detail in Japanese Patent Application No. 1-46514 filed by the present applicant.

Of course, whether or not to perform this time axis processing is determined by a logic signal generated in conjunction with the user's selection switch.

Next, the review finder will be described. Of course, there are 16: 9 and 4: 3 viewfinders. One device should be one device, and it is inconvenient for the user to change the image according to the aspect ratio for imaging.
Operation switching is also performed using the above-described logic signal.

The conditions required for the viewfinder are as follows.
First, at the time of recording, it is necessary at a minimum that the entire angle of view of the image to be captured can be seen without excess and deficiency, and if possible, the image is not distorted (for example, as shown in FIG. It is desirable to be reflected without becoming. Further, it is convenient if a part of the screen displays an image with which aspect ratio the image is captured. (This display does not necessarily need to be recorded in the VTR section.) FIG. 4 shows an image when a new 16: 9 or other wide-screen review finder 10A is used. The imaging conditions are the same as those in FIG. If the user selects to take a wide image, a display such as WIDE, 16: 9 appears on the review finder 10A as shown in FIG. It is projected.
(Corresponding to FIG. 2 (d)) When the normal NTSC is selected, the situation differs depending on where the input from the review finder is taken. If the input is taken directly from the image sensor,
Since this is always a wide NTSC signal, if it is left as it is, it is projected with an angle of view that is wider in the horizontal direction than the range in which the image is actually captured, which may cause an erroneous operation. So Figure 4 (b ₁₎ as
A display such as NORMAL, 4: 3 is displayed, and the portions that are not actually imaged on both sides are blanked, or a line 35 indicating the angle of view is projected as shown in FIG. 4 (b ₁ ′). On the other hand, when the input of the review finder is taken from the latter stage of the decompression circuit, a horizontally distorted image is displayed as shown in FIG. 4 (b ₂ ). (Corresponding to FIG. 2 (b)) Even though the entire angle of view to be imaged is displayed, the minimum function is achieved,
If possible, I want to create an image without distortion. For example, FIG.
It is better to provide blanking on both sides as in 1) and compress it in the center. (Equivalent to FIG. 2 (e)) The method of performing such conversion in a circuit manner is described in detail in Japanese Patent Application No. 1-46514 filed by the present applicant and the same inventor.

FIG. 5 shows a case where the current 4: 3 review finder 10B is used. Consider a case in which the input of the review finder is taken from the latter stage of the expansion circuit. When the user selects the current NTSC imaging, a display such as NORMAL, 4: 3 appears as shown in FIG. 5B, and the entire angle of view to be imaged is displayed without distortion. (Equivalent to Fig. 2 (a))
When imaging in NTSC is selected, WI as shown in Fig. 5 (a1)
A display such as DE, 16: 9 appears, but as it is, a vertically distorted image is displayed. (Corresponding to FIG. 2 (c)) This also performs the minimum function, but if possible, it is desired to make the image without distortion. For example, as shown in FIG. 7 (a2), the vertical scan width may be reduced to provide vertical blanking. (Equivalent to FIG. 2 (g)) Note that the method of deleting the both ends and extending the center portion as shown in FIG. 2 (f) is not allowed at least during recording in the case of the review finder. This is because it is not possible to see the entire angle of view to be recorded.

In this case, the method of taking the input of the viewfinder from the output of the image sensor which always obtains the output of the wide NTSC is not practical in this case. It is unreasonable that the aspect ratio of the input signal always differs from that of the viewfinder.

As described above, even in the review finder, various measures are required depending on the aspect ratio and how to take an input signal, but the simplest method is wide (16:16).
9) and using the output signal (before the expansion circuit) of the image sensor as an input. Therefore, in the following embodiments, this case will be mainly described.

The above is the operation when the VTR unit is stopped and in the recording state.
It is normal to display the playback image of R. The main purpose of this is to confirm whether or not the imaged content has been successfully recorded, so that it is not always necessary to reflect the full angle of view, and even if the image is distorted vertically and horizontally, there is no definite defect. However, if possible, it would be better to project the entire angle of view without distortion.
For this purpose, the identification signal of the aspect ratio is multiplexed with the recording signal of the VTR at the time of recording, and the aspect ratio is determined from the reproduced signal at the time of reproduction, and the result is used as a logical signal instead of the above logical signal. Send it to the review finder. This identification signal can be used for identifying the aspect ratio also on an external display.

Next, the VTR will be described. Needless to say, when imaging with the current NTSC, the VTR should operate in accordance with the current standards such as VHS (including S-VHS) and 8 mm video (including 8 mm high band). The same can be applied to imaging with wide NTSC, and the basic function is performed, but the situation is slightly different. Wide signals are scanned in the same horizontal scanning period as the current signal, for example, 4/3 times as long as horizontal scanning.In principle, the frequency band of the signal is 4/3 times, and so to obtain the same resolution, the wider band is necessary Signals must be transmitted. If the same resolution is to be maintained, when recording a wide signal, the carrier frequency of the luminance FM modulation signal at the time of VTR recording must be increased. On the other hand, there is a contradiction that if this is done, the VTR will lose compatibility with existing systems.

In the present invention, the aspect ratio of the imaged signal and VT
It is not intended to unambiguously define the standard for R records. The question is whether to emphasize performance or compatibility.

FIG. 1 shows an embodiment of the entire recording system according to the present invention which employs the above items. FIG. 1 is a circuit block diagram of an entire recording system including a camera, a VTR, and an review finder. It is not necessary that the entire device be in a single housing, but at least the camera and the review finder are usually integrated.

In FIG. 1, reference numeral 9 denotes a switch operated by the user, which is opened when the current NTSC imaging is selected, and is connected to the resistor R _1.
The logic signal which is turned to Low when selected is selected, and when the imaging in the wide NTSC is selected, the signal is closed, and is turned to High by the power supply to generate a logic signal. The necessary switching is automated using this logic signal.

Reference numeral 10 denotes an e-review finder. Here, it is assumed that the wide view (10A) shown in FIG. 4 is used first.

The switches 24 and 25 are connected in the direction shown in the drawing when the VTR unit is stopped or when recording, and in the opposite direction during reproduction.

First, the operation at the time of recording will be described. Light that has passed through the lens barrel 8 forms an optical image on the solid-state imaging device 5, and an RGB signal or its complementary color signal corresponding to the optical image is obtained at the output. Y
The color difference conversion circuit 11 converts the signal into a Y signal and two color difference signals. These signals are displayed on the review finder 10 via the switch 25 at the full angle of view. (Of course, if the review finder 10 is black and white, only the Y signal needs to be sent.) The above-mentioned logic signal via the switch 24 is connected here. If the logic signal is high, the entire angle of view may be projected as it is (FIG. 4 (A)), but if the logic signal is low, the portion which is not imaged and recorded is blanked as shown in FIG. 4 (b ₁ ).
As shown in FIG. 4 (b ₁ ′), a line 35 indicating the angle of view is also displayed.

The output of the Y color difference conversion circuit 11 is also applied to a time axis expansion circuit 30. The above logic signal is also connected here. If the logic signal is high, the signal is passed through without any extension operation, and
If it is w, it is converted to the current NTSC signal by the decompression operation shown in FIG. Next, the output Y signal is used as an identification signal adding circuit.
12 is also entered. Here, when the signal is a wide signal (which can be known from the above logic signal), for example, a pulse or a burst-like identification signal is added during the scanning blanking period. (This is used at the time of reproduction as will be described later.) Thereafter, the Y signal recording processing circuit 13 converts the signal into an FM modulated signal in accordance with the VTR standard, and applies the signal to one end of the adder 15. The two color difference signals are 0.629MHz in the case of VHS by the C signal recording processing circuit 14.
After quadrature two-phase modulation with a subcarrier of (3.58 MHz according to the NTSC standard), and then quadrature two-phase modulation with a subcarrier of 0.629 MHz
Low-frequency conversion to z may be performed. ) Adds to the other end of adder 15. The output of the adder 15 is recorded on the magnetic tape 26 via the recording amplifier 16 and the recording head 17A.

At the time of reproduction, the switches 24 and 25 are switched in the direction opposite to that shown in the figure. First, a signal is read from the magnetic tape 26 by a reproducing head 17B (which may be the same as 17A), amplified by a reproducing amplifier 18, and then subjected to FM demodulation by a Y signal reproducing circuit 19 to form a C signal reproducing process. 3.58MHz for NTSC from circuit 20
The C signal obtained by converting the subcarrier frequency into is obtained. Both are added by the adder 21 and sent from the output terminal 22 to an external display. On the other hand, the reproduction signal is also sent to the review finder 10 via the switch 25 to enable recording confirmation. On the other hand, the aspect ratio discrimination circuit 23 detects whether or not the identification signal has been added by the identification signal addition circuit 12 earlier, discriminates the aspect ratio of the signal, and uses the result as a logical signal (in this case, high NTSC wide NTSC). The command is sent to the review finder 10 via the switch 24. Logic signal
If it is High, the image should be projected as it is, and if it is Low, it will be distorted as shown in FIG. 4 (b ₂ ). Therefore, it is better to blank both sides as shown in FIG. 4 (b ₁ ).

Next, an example in which the embodiment of FIG. 1 is slightly changed without changing the gist of the present invention will be described. One example is shown in FIG. As described above, since the monitor image at the time of reproduction in the review finder 10 merely confirms whether or not recording is possible, it is not always necessary to correct image distortion or the like. In this case, as shown in FIG. 6, the configuration can be simplified to a configuration in which the switch 24, the identification signal adding circuit 12, and the aspect ratio determining circuit 23 are removed from FIG.

Another example is shown in FIG. When recording a wide signal as described above, if it is desired to increase the carrier frequency of the luminance FM modulation signal ignoring compatibility with the current VTR, the logical signal generated by the switch 9 is sent to the Y recording processing circuit 13. To increase the carrier frequency for wide signals. In this case, since the circuit characteristics at the time of reproduction also need to be switched according to the signal, a determination circuit 27 is provided, and the type of the signal is determined from the frequency of the reproduced FM signal (High level for a wide signal). Send it to 19. Since the result of this determination indicates the aspect ratio, the switch 24
The identification signal adding circuit 12 and the aspect ratio determining circuit 23 shown in FIG. 1 can be omitted. It is desirable that the input to the discriminating circuit 27 be taken from a place as close to the output of the regenerative amplifier 18 as possible. This describes a method of determining the VHS standard and the S-VHS standard, but the essence is the same.

As described above, as an embodiment slightly different from FIG. 1, the input to the review finder may be taken after the time base expansion circuit 39. In this case, if the logic signal is low (current NTSC) at the time of image recording, no action is taken as shown in FIG.
_Since a distorted image as shown in ₂ ) is projected, it is better to blank both sides as shown in FIG. 4 (b ₁ ). This is the same as the operation at the time of reproduction.

If the review finder has an aspect ratio of 4: 3 (10B in FIG. 5) compatible with the current NTSC, the time base decompression circuit takes the signal from the stage after 30, and again according to the logic signal, It is preferable to project the image as shown in FIGS. 5 (a ₂ ) and 5 (b).

Next, an electric review finder has been assumed as the view finder, but an optical one can also be used. In the present invention, since the optical angle of view does not change, it is necessary to display the angle of view in the viewfinder.
For example, as shown in the optical viewfinder 32 in FIG. 8, the lines 33 and 34 indicating the angles of view at both aspect ratios appear so that the person using the camera can be seen or the display by characters can be seen. There are methods such as doing.

In the above description, the aspect ratio of the wide signal is often set to 16: 9. If so, it is within the scope of the present invention. Various cases such as 5: 3, 14: 9, 17: 9 can be considered.

At the output terminal 22 for signals to the external display in FIG. 1 and the like, both 16: 9 and 4: 3 signals naturally appear. When the aspect ratio of the external display does not match, an image distorted vertically or horizontally is displayed on the display. The method of converting the data so as not to be distorted is described in detail in the aforementioned Japanese Patent Application No. 1-46514. Here, the logic signal at the time of the above reproduction can be used.

Further, as described above, the present invention can also be applied to a device in which the camera unit / viewfinder unit (camera device) and the VTR unit are separated into separate housings. The same applies to the case where the camera section / viewfinder section and the recording function section of the VTR are provided in one case, and the reproduction function section is provided in another case.

Furthermore, when switching both the NTSC signal with an aspect ratio of 4: 3 and the HDTV signal of 16: 9 with the same device,
Also, 4: 3 PAL signal or D2-MAC signal and 16: 9 Wide-M signal
The present invention can also be applied to a case where an AC signal or an HD-MAC signal is switched and shared.

〔The invention's effect〕

As described above, according to the present invention, in a recording system having a camera, a VTR, and a viewfinder, the camera, the VTR, and the camera can be used even when both the imaging with the current aspect ratio and the imaging with the new wide aspect ratio are possible. Regardless of the type of the viewfinder, the turn required by the customer can be one switch operation.
Therefore, there is an effect that a user-friendly system can be configured without forcing the customer to perform a troublesome operation.

[Brief description of the drawings]

1, 6, and 7 are circuit block diagrams showing an embodiment of the present invention, FIG. 2 is a diagram showing a relationship between an aspect ratio of a camera and an aspect ratio of a display, and FIG. 4 is a waveform diagram of a signal for explaining the operation of the decompression circuit 30, FIG.
FIGS. 5, 5 and 8 are front views of the display unit of the viewfinder according to the present invention. 5: solid-state imaging device, 30: time-axis expansion circuit, 9: switch, 10: review finder, 12: identification signal addition circuit 23: aspect ratio determination circuit, 27: determination circuit, 32 ... ... optical viewfinder.

Continuation of front page (72) Inventor Tadashi Otsubo 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Inside the Home Appliances Research Laboratory, Hitachi, Ltd. (58) Field surveyed (Int. Cl. ⁶ , DB name) H04N 5/225 H04N 7 / 01

Claims (5)

(57) [Claims] An image having an aspect ratio of 4: 3 as in the current NTSC system, and an aspect ratio relatively longer in the horizontal direction than the image, that is, a ratio of the horizontal length to the vertical length of the screen. In a camera device that has a camera unit that can select either the wide NTSC image or a viewfinder that can monitor the image, the user can determine whether the image is captured using the wide NTSC system or the current NTSC system. Switch for selecting (9), Image sensor with horizontal angle of view corresponding to wide NTSC (5)
In response to the video signal output of this image sensor and the command from the switch, the signal is passed as it is when shooting with wide NTSC, and the horizontal direction of the image without changing the horizontal cycle when shooting with current NTSC. A time base expansion circuit (30) that expands the center 3/4 by 4/3 times, a video signal output from the image sensor, and a command from the switch are received. When shooting with the current NTSC, wide NTSC-compatible images are displayed by blanking out the portion deviating from the horizontal angle of view caused by the difference in aspect ratio or displaying a line (35) indicating the end of the angle of view. A camera device comprising: an review finder (10A) having an aspect ratio. 2. An image having an aspect ratio of 4: 3, as in the current NTSC system, and an aspect ratio relatively longer in the horizontal direction than that of the current NTSC system. In a camera device that has a camera unit that can select either the wide NTSC image or a viewfinder that can monitor the image, the user can determine whether the image is captured using the wide NTSC system or the current NTSC system. Switch for selecting (9), Image sensor with horizontal angle of view corresponding to wide NTSC (5)
In response to the video signal output of this image sensor and the command from the switch, the signal is passed as it is when shooting with wide NTSC, and the horizontal direction of the image without changing the horizontal cycle when shooting with current NTSC. A time axis decompression circuit (30) that expands the central part 3/4 by 4/3 times, a video signal output from the time axis decompression circuit, and a command from the above switch, when capturing an image with the current NTSC, For review and wide NTSC imaging, the review width (10B), which has an aspect ratio compatible with the current NTSC, that reduces the vertical scanning width to about 3/4 and projects Camera device characterized by the above-mentioned. 3. The camera device according to claim 1, further comprising a function of displaying on which display the image is captured by the display section of the review finder. 4. An image having an aspect ratio of 4: 3 as in the current NTSC system, and an aspect ratio relatively longer in the horizontal direction than the ratio of the horizontal length to the vertical length of the screen. In a camera recording system that has a camera unit that can select one of the wide NTSC format images, a viewfinder unit that can monitor images, and a VTR unit that records and plays back, the user can use the wide NTSC format and the current NTSC format. (9) Switch for selecting which of the following to take an image, and an image sensor (5) with a wide field angle of view compatible with wide NTSC
In response to the video signal output of this image sensor and the command from the switch, the signal is passed as it is when shooting with wide NTSC, and the horizontal direction of the image without changing the horizontal cycle when shooting with current NTSC. A time base expansion circuit (30) that expands the central part 3/4 by 4/3 times, and an identification signal that adds a signal to the output video signal of the time base expansion circuit to know which signal is used. An additional circuit (12), a VTR section for recording and reproducing the video signal with the identification signal, and a signal of any one of the above-mentioned methods by detecting the identification signal from the reproduced video signal when reproducing the VTR section. An aspect ratio determination circuit (23) for determining whether or not the VTR unit is stopped or recording, a video signal output from the image sensor, and a command from the switch,
When shooting with NTSC, the image is displayed as it is. When shooting with the current NTSC, the part outside the horizontal angle of view caused by the difference in aspect ratio is blanked out, or the line (35) indicating the end of the angle of view is blanked out Display, and at the time of playback of the VTR section, receiving the playback video signal of the VTR section and the determination result of the aspect ratio determination circuit, if it is a wide NTSC signal, it is projected as it is, if it is the current NTSC signal,
Wide NT with blanks on both sides of the screen for projection
Review finder with aspect ratio compatible with SC (10
A) A camera recording system characterized by comprising: 5. An image having an aspect ratio of 4: 3, as in the current NTSC system, that is, a ratio of the horizontal length to the vertical length of a screen, and an aspect ratio relatively longer in the horizontal direction. In a camera recording system that has a camera unit that can select one of the wide NTSC format images, a viewfinder unit that can monitor images, and a VTR unit that records and plays back, the user can use the wide NTSC format and the current NTSC format. (9) Switch for selecting which of the following to take an image, and an image sensor (5) with a wide field angle of view compatible with wide NTSC
In response to the video signal output of this image sensor and the command from the switch, the signal is passed as it is when shooting with wide NTSC, and the horizontal direction of the image without changing the horizontal cycle when shooting with current NTSC. A time-base expansion circuit (30) that expands the central part 3/4 by 4/3 times, and the output of this time-base expansion circuit and the command from the above switch, when capturing images in wide NTSC, use the current NTSC. Luminance signal components can be generated with a relatively high carrier compared to when imaging.
When recording and reproducing by FM modulation, the VTR unit also has a function of determining which signal is the type of signal from the frequency of the reproduced FM signal by the determination circuit (27) at the same time, and stopping the VTR unit Alternatively, when recording, the video signal output from the image sensor and the command from the
When shooting with NTSC, the image is displayed as it is. When shooting with the current NTSC, the part outside the horizontal angle of view caused by the difference in aspect ratio is blanked out, or the line (35) indicating the end of the angle of view is blanked out In addition, when the VTR section is played back, the playback video signal of the VTR section and the determination result of the determination circuit are received. A camera recording system comprising: an review finder (10A) having a wide NTSC-compatible aspect ratio for projecting blanks on both sides for projection.