JP3027317B2 - Video recording / reproducing device with still camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video recording / reproducing apparatus with a still camera , and more particularly, to recording video and audio on a recording medium.
Recording and, when reproducing the video and audio recorded on the recording medium
Both relate to a video recording / reproducing apparatus with a still camera capable of recording a still image .

[0002]

2. Description of the Related Art When recording various images, there is a demand for recording images as both moving images and still images.
At this time, a video camera is required to record a moving image, and a still camera is required to record a still image, and both the video camera and the still camera must be carried, which is bothersome. In response to this dissatisfaction, a still camera-integrated video camera in which a video camera and a still camera are integrated has been considered.

[0003] In such a still camera-integrated video camera, when a still image is shot by a still camera at the time of shooting a scene by the video camera in order to create an atmosphere of an image by the video camera, the shutter sound of the still camera or the shutter sound of the still camera is generated. In some cases, the pseudo shutter sound is superimposed and recorded on the audio of the video camera, and the effect of reproducing the shutter sound or the pseudo shutter sound when the video and audio are reproduced by the video camera is provided.

A still camera-integrated video camera having such an effect has already been filed in Japanese Patent Application Laid-Open No. 63-156480.

[0005]

SUMMARY OF THE INVENTION However, Japanese Patent Application Laid-Open
In the conventional still camera-integrated video camera disclosed in Japanese Patent No. 156480, when the still camera and the video camera are simultaneously photographed, the shutter sound of the still camera is recorded in the sound of the video camera so that the shutter sound is reproduced during reproduction. However, since the video remains a moving image, it cannot be said that it is sufficiently effective.In addition, when the shutter sound is reproduced during the moving image and during the reproduction, regardless of the reproduced image, the viewer may feel uncomfortable. There was a problem such as there is.

The present invention has been made in view of the above points, and has as its object to provide a video recording / reproducing apparatus with a still camera capable of effectively creating an atmosphere according to reproduced video and audio.

[0007]

The first aspect of the present invention provides a receiving apparatus.
Imaging means for imaging a subject and generating a video signal;
Voice detection means for detecting voice and generating a voice signal;
The video signal generated by the imaging means and the audio detection means
Superimposes the audio signal generated in the step on the recording medium.
Recording means, and the video recorded superimposed on the recording medium.
Reproducing means for reproducing an image signal and an audio signal;
Still camera means for taking a still image of the
Means for superimposing the video and audio signals of the subject
The still camera when recording on the recording medium
Means for taking a still image of the object by means
A specific signal set for the audio signal is superimposed on the audio signal.
A specific signal superimposing means for supplying to a recording means, and the reproducing means
The specific signal superimposing means from the audio signal reproduced by
A specific signal detection for detecting the specific signal superimposed by the stage;
Output means and the specific signal detection means detects the specific signal.
When the video signal becomes a still image
Control means for controlling the reproducing means as described above.
It is characterized by the following.

[0008] Claim 2 is based on claim 1, and
The specific signal superimposing means is provided by the still camera means.
Output when capturing a still image of the subject
The shutter sound is superimposed on the surrounding sound by the sound detection means
The shutter sound is superimposed on the surrounding sound.
The audio signal thus generated is generated. In addition, billing
Item 3 is the device according to item 1, wherein the specific signal superimposing means is provided in front of the device.
A still image of the subject is taken by the still camera means.
The specific signal was detected by the sound detecting means when the image was formed.
By superimposing on the audio signal, the specific signal is added to the surrounding audio
It is characterized by generating a superimposed audio signal.

[0009]

According to the present invention, the image of the subject is recorded by the recording means.
And while recording audio, by still camera means
When a still image of the subject is captured, the shutter release
A specific signal, such as a sound, is superimposed on the audio signal and
It can be recorded and recorded on a recording medium at the time of recording during playback.
The still camera hand detects the specific signal recorded.
Along with specific signals such as a release sound at the place where shooting was performed at the step
The video recorded by the recording means can be output as a still image.
Video and audio to the video recorded by the recording
Effective reproduction suitable for the atmosphere can be performed.

[0010]

[0011]

FIG. 1 is a block diagram showing a first embodiment of the present invention. In this embodiment, a still camera-integrated video camera will be described as a video playback device and a video recording / playback device. The video camera 1 integrated with a still camera of the present embodiment is provided integrally with the video camera unit 4 and the video camera unit 4 for recording a moving image of a subject 2 and its surrounding sound on a magnetic tape 3 as a recording medium. The brightness and brightness of the subject 2 are provided in common to the still camera unit 6, the video camera unit 4, and the still camera unit 6 that record a still image of the subject 2 and are used for exposure / focus control of the video camera unit 4 and the still camera unit 6. It comprises a photometric / distance measuring unit 7 for measuring the distance to the subject 2.

In the still camera-integrated video camera 1, a video camera unit 4 magnetically records a moving image of a subject 2 and its surrounding sound on a magnetic tape 3.
It is possible to reproduce a signal corresponding to a moving image and a voice recorded in the camera, and to record a still image of the subject 2 on the photosensitive film 5 by the still camera unit 6. At this time, the video camera unit 4 and the still camera unit 6 perform exposure control and focus control according to the brightness of the subject 2 and the distance to the subject 2 obtained by the photometry / ranging unit 7.

First, the configuration of the video camera unit 4 will be described. The video camera unit 4 converts the moving image of the subject 2 and the sound around it into a video signal and an audio signal, and obtains a recording signal in which the video signal and the audio signal are superimposed.
The recording signal obtained by the recording processing section 8 is magnetically recorded on the magnetic tape 3 and the recording signal magnetically recorded on the magnetic tape 3 is read from the magnetic tape 3 to obtain a reproduction signal. A recording / reproducing unit 9, a reproduction processing unit 10 for separating a reproduction signal read from the magnetic tape 3 by the recording / reproduction unit 9 to obtain a video signal and an audio signal, and a recording / reproduction switching unit for switching between recording and reproduction 11, a video control unit 12 for controlling the video camera unit 4 and an operation unit 38 for giving a control instruction to the video control unit 12 for recording and reproducing moving images and sounds.

The recording processing unit 8 includes a CCD (Charge Coupled Device) unit 13 for converting an image of the subject 2 into an electric signal,
The lens 14 focuses the image of the subject 2 on the CD unit 13, the lens driving unit 15 drives the lens 14 in the direction of arrow A according to the focus control signal from the focus video control unit 12, and the CCD unit 13 supplies the lens 14. A diaphragm 16 for controlling the amount of light; a diaphragm driving unit 17 for driving the diaphragm 16 in response to a diaphragm control signal from the video control unit 12;
CD for performing correlated double sampling (CDS) processing on the electric signal converted by the CD unit 13 to remove noise
The electric signal from which noise has been removed by the S circuit 18 and the CDS circuit 18 is converted into a video signal to which a synchronizing signal, a burst signal, and the like are added, and FM modulation and the like are performed to obtain an optimal reproduction signal at the time of reproduction. Video signal processing unit 19,
A microphone 20 for converting the sound around the subject 2 into an electric signal, an amplifier 21 for amplifying the electric sound signal converted by the microphone 20, and various processes such as noise removal on the electric sound signal amplified by the amplifier 21 An audio signal processing unit 22, a video / audio superimposition unit 23 that superimposes the video signal generated by the video signal processing unit 19 and the audio signal generated by the audio signal processing unit 22, and a video signal superimposed by the video / audio superimposition unit 23 And an amplifier 24 for amplifying the recording signal consisting of the audio signal to obtain an optimum current for recording the recording signal on the magnetic tape 3. Note that the audio signal processing unit 22 performs FM modulation by an FM modulation circuit to remove noise included in the signal from the microphone 20 with a low-pass filter or the like and to record the noise on the magnetic tape 3. The signal recorded on the magnetic tape 3 is subjected to processing such as emphasis / de-emphasis and compression / decompression in order to reduce noise generated by the recording medium, modulation, and the like, so that a high-quality image with less noise can be obtained. Have been.

The recording / reproducing unit 9 contacts the magnetic tape 3, writes a recording signal on the magnetic tape 3, detects a magnetic change of the magnetic tape 3, and reads the reproducing signal. , 26, a drum motor 28 for rotating the rotary drum 27 in response to a drive signal from the video control unit 12, a pinch roller 29 rotatably provided on one surface side of the magnetic tape 3, On the other side of the magnetic tape 3,
The pinch roller 2 is provided so as to face the pinch roller 29.
9 together with the magnetic tape 3, and rotates in response to a running control signal from the video control unit 12.
Is driven in the direction of arrow B, and video signals and audio signals are recorded on the magnetic tape 3 by, for example, an 8 mm video system or a VHS system.

The reproduction processing unit 10 removes low frequency components from the reproduction signals amplified by the amplifiers 31 and 32 to amplify the reproduction signals read by the magnetic heads 25 and 26 from the magnetic tape 3 and extracts the video signal components. The high-pass filter 32 demodulates the video signal component extracted by the high-pass filter 32 into an original signal, removes high-frequency components from the reproduced signal amplified by the video signal reproduction processing unit 33 and the amplifier 31 output from the video output terminal Tv. A low-pass filter 34 for extracting an audio signal component, an audio signal reproduction processor 35 for demodulating the audio signal component extracted by the low-pass filter 34 into an original audio signal, a level of the audio signal reproduced by the audio signal reproduction processor 35, and the like. And an audio signal output circuit 36 for outputting the audio signal from the audio output terminal Ts, and the audio signal reproduced by the audio signal reproduction processor 35. A component of a voice signal is analyzed, and when a shutter sound of the still camera unit 6 is detected, a shutter sound detecting unit 37 that supplies a pulse signal of a high level to the video control unit 12 is recorded on the magnetic tape 3. Play video and audio signals.

The shutter sound detector 37 divides the supplied sound into a plurality of frequency bands, and separates the signal components of each frequency band into the signal components of the shutter sound, which are previously set separately for each frequency band. If the components of each frequency band are within a certain error, it is recognized as a shutter sound.
The shutter sound is analyzed by the same recognition method as that of a general voice recognition circuit, and if the shutter sound is recognized, a shutter sound detection pulse which becomes high level is output.

The recording / reproduction switching unit 11 is provided between the magnetic heads 25 and 26 of the recording / reproduction unit 9 and the amplifier 24 of the recording processing unit 8 and the amplifier 31 of the reproduction processing unit 10. The connection of the recording / reproducing unit 9 with the magnetic heads 25 and 26 is switched to the amplifier 24 side of the recording processing unit 8 or the amplifier 31 side of the reproduction processing unit 10 in response to the / reproduction switching control signal.

The video control unit 12 controls the lens driving unit 1 according to the photometry information and the distance measurement information from the photometry and distance measurement unit 7.
Imaging control processing for controlling the exposure and focus control by controlling the aperture driving unit 17 and the aperture driving unit 17; recording / reproduction switching processing for switching between recording and reproduction in accordance with the operation of the operation unit 38; A running system control process for controlling the rotation of the magnetic heads 25 and 26 and the running of the magnetic tape 3 in accordance with the detection pulse from the sound detector 37 is executed.

Next, the still camera section 6 will be described. The still camera unit 6 includes a shutter button 39 and a lens 4
0, a lens driving unit 41, an aperture 42, an aperture driving unit 43, a shutter 44, a shutter driving unit 45, and a still camera control unit 46. The shutter button 39 is an operation button operated at the time of shooting a still image. For example, the shutter button 39 generates a pulse signal which is at a low level when the button is not operated and which is at a high level for a certain time when the button is operated, and is supplied to the still camera control unit 46 I do.

The lens 40 focuses light from the subject 2 on the film. The lens driving unit 41 drives the lens 40 in the direction of arrow A ′ in accordance with the focus control signal from the still camera control unit 46 to perform focusing.
The aperture 42 controls the amount of light from the subject 2. The aperture driving unit 43 drives the aperture 42 according to an aperture control signal from the still camera control unit 46 to obtain an optimal aperture.

The shutter 44 controls the incidence of light from the subject 2 on the film 5. The shutter drive unit 45 drives the shutter 44 according to a shutter drive control signal from the still camera controller unit 46. At this time, the drive sound of the shutter 44 is set to a volume that can be obtained at an optimum level by the microphone unit 20 of the video camera unit 4. The still camera controller 46 determines the aperture amount of the aperture 42 and the opening / closing speed of the shutter 44 based on a preset exposure table according to the photometry information from the photometry / ranging section 7, and supplies it to the aperture drive section 43. Generating an aperture control signal and a shutter control signal to be supplied to the shutter driving unit 45;
A focus control signal to be supplied to the lens driving unit 41 is generated according to the distance measurement information. The aperture control signal and the focus control signal are constantly supplied to the aperture driving unit 41 and the aperture driving unit 43, and the shutter control signal is a shutter button. When the shutter 39 is operated, the shutter drive unit 45 is supplied.

Next, the operation of the still camera integrated video camera 1 when recording an image will be described. Light from the subject 2 is imaged on the CCD unit 13 via the lens 14 and the aperture 16. The light focused on the CCD unit 13 is the CCD unit 1
The signal is converted into an electric signal by the CDS 3, amplified by the CDS circuit 18, and then supplied to the video signal processing unit 19.

The electric signal supplied to the video signal processing section 19 is converted into a signal to be recorded on the magnetic tape 3 and supplied to the video / audio superimposing section 23. On the other hand, the sound around the subject 2 is converted into an electric signal by the microphone 20, amplified by the amplifier 21, supplied to the sound signal processing unit 22, and converted into a signal to be recorded on the magnetic tape 3,
It is supplied to the video / audio superimposing section 23.

The video signal and the audio signal supplied to the video / audio superimposing unit 23 are superimposed and recorded magnetically on the magnetic tape 3. At this time, when the shutter button 39 of the still camera unit 6 is operated, a still image of the subject 2 is recorded on the film 5, and the operation sound (shutter sound) of the shutter 44 is transmitted to the microphone 20, and another sound is generated. And recorded on the magnetic tape 3 as an audio signal.

At this time, since the distance between the shutter 44 and the microphone 20 is constant because the video camera unit 4 and the still camera unit 6 are integrally formed, the shutter sound is recorded at a substantially constant level. Will be done. Next, the operation of reproducing the magnetic tape 3 by the video camera unit 4 of the present embodiment will be described.

FIG. 2 is a flowchart showing the operation of the video control unit 12 when the magnetic tape 3 is reproduced. When the playback button of the operation unit 38 is operated, the video control unit 12 first switches the recording / playback switching unit 11 to the magnetic heads 25 and 26.
Are switched to be connected to the reproduction processing unit 10 (steps S1-1 and S1-2).

Next, the video control unit 12 drives the drum motor 28 and the capstan motor 30 to scan the magnetic tape 3 with the magnetic heads 25 and 26 while running the magnetic tape 3 (step S1-3). As a result, an electric signal corresponding to the change in the magnetization on the magnetic tape 3 is generated in the magnetic heads 25 and 26,
The electric signal generated in 6 is supplied to the reproduction processing unit 10 via the recording / reproduction switching unit 11.

Here, the signal supplied to the reproduction processing unit 10 is amplified by the amplifier 31, and then amplified by the HPF 32 and the LPF 32.
34. The HPF 32 removes the audio signal component by removing the low frequency component from the signal from the amplifier 31, and extracts the video signal component. HPF32
The video signal extracted at is supplied to the video signal reproduction processing unit 33, set to the video signal, output from the video output terminal Tv, and supplied to a video input terminal of a television or the like.

Further, the LPF 34 removes the video signal component by removing the high frequency component from the signal from the amplifier 31, and extracts the audio signal component. The audio signal component extracted by the LPF 134 is supplied to the audio signal reproduction processing unit 35, restored to the original audio signal, and supplied to the audio signal output circuit 36 and the shutter sound detection unit 37. The level of the audio signal restored by the audio signal reproduction processing unit 35 is controlled by an audio signal output circuit 36, output from an audio signal output terminal Ts, and supplied to an audio input terminal of a television or the like.

The audio signal restored by the audio signal reproduction processing unit 35 is supplied to a shutter sound detection unit 37, and the superimposed shutter sound is detected. When the shutter sound is detected in the audio signal, the shutter sound detection unit 37 supplies a shutter sound detection pulse to the video control unit 12. When the video control unit 12 detects the shutter sound detection pulse from the shutter sound detection unit 37, it stops the capstan motor 30 to cause the magnetic heads 25 and 26 to scan the same portion of the magnetic tape 3 and output the same video signal. Then, the output video signal of the video output terminal Tv is controlled to be a still image, and the audio signal output circuit 36 is controlled to be in a mute state in which no audio signal is output from the audio output terminal Ts (step S1-4). S1-
5).

The video control unit 12 determines in step S1
After maintaining the state of -5 for a certain period of time, the capstan motor 30 is driven again, the mute state of the audio signal output circuit 36 is released, and the normal reproduction state is returned (steps S1-6, S1-7). In addition, video control section 1
When the stop button of the operation unit 38 is operated, the drum motor 28 and the capstan motor 30 are stopped and set to a stopped state (step S1-9).

As described above, according to the present embodiment, when the shutter button 39 of the still camera unit 6 is operated at the time of shooting with the video camera unit 4 and the shutter 44 is driven, the operation sound of the shutter 44 passes through the microphone 20. It is recorded on the magnetic tape 3 as an audio signal. Next, when the operation sound of the shutter 44 recorded on the magnetic tape 3 is reproduced at the time of reproduction of the video camera unit 4, the reproduced image becomes a still image and the sound is muted, so that an atmosphere suitable for the image and the sound is hidden. Can be put out.

FIG. 3 is a block diagram showing a second embodiment of the present invention. In the figure, the same components as those of FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. In this embodiment, the shutter sound is generated in a pseudo manner, recorded on the magnetic tape 3 in a manner superimposed on the audio signal, and the reproduction in the video camera unit 4 is performed by detecting the pseudo-generated shutter sound during the reproduction. The moving image is intended to be temporarily stopped.

In this embodiment, a pseudo shutter sound generating circuit 47 is inserted between the amplifier 21 and the audio signal processing unit 22 of the video camera unit 4 in FIG. The pseudo-shutter sound generation circuit 47 generates a pseudo-shutter sound in response to the operation of the shutter button 39, and a signal supplied from the amplifier 21 to the audio signal processing unit 22 in response to the operation of the shutter button 39. And a switch 49 for switching between a sound signal from the surroundings of the subject 2 and a pseudo shutter sound signal from the shutter sound generating section 48.

As described above, the pseudo shutter sound generation circuit 47
The shutter sound can be recorded at a more stable level by providing the shutter sound.
7, the shutter sound can be reliably and accurately detected.
In the first and second embodiments, an example in which the present invention is applied to a still camera-integrated video camera has been described. However, the present invention is not limited to this, and can be applied to a stationary video tape recorder or the like.

[0037]

As described above , according to the present invention, the recording means
When recording video and audio of the subject
When a still image of the subject is taken by
Overlaps a specific signal, such as a shutter release sound, with the audio signal.
Can be recorded on a recording medium and recorded during playback.
Detecting a specific signal recorded on a recording medium during recording
Release sound at the place where shooting was performed with still camera means
The video recorded by the recording means together with a specific signal such as
Can be output as a
To achieve effective playback that matches the mood of the video and audio.
It has features such as the ability to

[0038]

[Brief description of the drawings]

FIG. 1 is a block diagram of a first embodiment of the present invention.

FIG. 2 is an operation flowchart of a video control unit at the time of reproduction according to the first embodiment of the present invention.

FIG. 3 is a block diagram of a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Still camera integrated video camera 2 Subject 3 Magnetic tape 4 Video camera unit 5 Film 6 Still camera unit 10 Reproduction processing unit 12 Video camera control unit 34 LPF 35 Audio signal reproduction processing unit 36 Audio signal output circuit 37 Shutter sound detection unit 39 Shutter button 44 Shutter

Claims (3)

(57) [Claims] 1. An imaging system for imaging a subject and generating a video signal.
Image means and sound detection means for detecting surrounding sounds and generating a sound signal
And the video signal and the audio detection generated by the imaging unit.
Recording on a recording medium by superimposing the audio signal generated by the means
Recording means, and the video signal and the audio recorded superimposed on the recording medium.
Reproduction means for reproducing a signal, and still camera means for photographing a still image of the subject
And a video signal and an audio signal of the subject by the recording means.
When recording on the recording medium with the
A still image of the subject by a camera
When a specific signal set in advance is superimposed on the audio signal
The specific signal superimposing means to be supplied to the recording means and the audio signal reproduced by the reproducing means.
Detecting the specific signal superimposed by the constant signal superimposing means.
Specific signal detecting means, and when the specific signal is detected by the specific signal detecting means.
So that the video by the video signal becomes a still image
A reproduction control means for controlling the reproduction means.
Video recording / reproducing apparatus with a still camera. 2. The method according to claim 1, wherein the specific signal superimposing means includes a plurality of
When capturing a still image of the subject by camera means
The shutter sound output to the outside at the
Detected in a state superimposed on the surrounding sound, and
Generates audio signal with shutter sound superimposed
2. A video recording / reproducing apparatus with a still camera according to claim 1.
Place. 3. The method according to claim 2, wherein the specific signal superimposing means is configured to control the still camera
When capturing a still image of the subject by camera means
To the audio signal detected by the audio detection means.
The specific signal was superimposed on the surrounding sound by superimposing
2. The switch according to claim 1, wherein the audio signal is generated.
Video recording / reproducing device with chill camera.