JPS63219281A - Video camera - Google Patents

Abstract

PURPOSE:To prevent mis-photographing from occurring, by providing an acceleration sensor, and switching the mode of a VTR to a stop mode or a temporary stop mode when acceleration exceeding the one set in advance is applied even when the VTR is set at a recording mode. CONSTITUTION:While picture recording is performed with a video camera, the mode of the VTR is switched from the recording mode to the temporary stop mode by depressing a depression button switch 17. To switch a photographing scene, an operator moves eyes from an electronic view finder 15 keeping the above state, and moves with a video camera main body 11 in hands. At this time, if the mode is kept at the recording mode without being switched to the temporary stop mode due to malfunction, the recording of the ground or the sky not being intended to photograph is started. Since the operator moves the main body 11 in hands, the acceleration larger than that in the photographing is applied on the main body 11. When the acceleration exceeds the one set in advance, it is detected by the acceleration sensor 19, and the mode of the VTR is switched to the stop mode or the temporary stop mode by a control circuit 18.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a portable video tape recorder (hereinafter referred to as VTR).
The present invention relates to a video camera that can be used for applications such as video cameras.

2. Description of the Related Art A conventional video camera will be described below with reference to the drawings. FIG. 2 is a diagram showing the main parts of a conventional video camera. A photographing lens 2 for photographing a subject is fixed to the front of the video camera body 1, and the image taken by the photographing lens 2 is formed on an image pickup tube 3. . The signal from the image pickup tube 3 is supplied to a signal processing circuit 4 where it can be converted into a predetermined video signal, and this video signal is sent to an electronic viewfinder 5 and a portal V for checking the captured image.
The signal is supplied to a video output terminal 6 for recording to a TR (not shown). Therefore, the user can take pictures while checking the image on the electronic viewfinder 5.

When the push button switch 7 is pressed, the VTR repeats the recording mode and the pause mode each time the push button switch 7 is pressed.

Problems to be Solved by the Invention However, with the above configuration, when carrying a video camera with the VTR in pause mode, etc.
The push button switch 7 is easy to turn on and makes you aware of it.
You may have accidentally pressed the VTR and set it to record mode, or you may have intended to set it to pause mode, but it remained in record mode and was not in pause mode, and the VT
When playing back R, the problem was that only the ground and sky were photographed.

In view of the above-mentioned problems, the present invention focuses on the fact that a large acceleration is not applied to the video camera part during general shooting, but a considerably large acceleration is applied when carrying it while walking or transporting it. An acceleration sensor is installed in the
To provide a video camera which switches a VTR to a stop mode or a pause mode when a preset acceleration is applied even if the VTR is in a recording mode.

Means for Solving the Problems In order to solve the second problem, the video camera of the present invention includes a photographic lens for photographing a subject, and a photoelectric conversion means for converting an optical image from the photographic lens into an electrical signal. , a video camera having a holding means for holding the photographing lens and the photoelectric conversion means so that their optical axes coincide with each other, an acceleration sensor for detecting the magnitude of acceleration, and a video tape recorder when the video tape recorder is in a recording mode, The acceleration sensor is
The apparatus includes a control means for switching the video tape recorder to a stop mode or a pause mode by detecting an acceleration greater than a preset acceleration value.

According to the present invention, with the above-described configuration, when the acceleration sensor detects an acceleration higher than a preset value, the VTR that is accidentally in the recording mode is controlled to switch to the stop mode or the pause mode. When I was carrying my phone, I accidentally pressed the push button switch to set the VTR to record mode, or I intended to put it in pause mode, but it was still in record mode and not in pause mode, and I ended up shooting only the ground or the sky. This can solve problems such as.

Embodiment Hereinafter, a video camera according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 shows a block diagram of the main parts of a photographing device according to an embodiment of the present invention. In FIG. 1, a photographing lens 12 for photographing a subject is provided at the front of a video camera body 11, and an image of the subject photographed by the photographing lens 12 is formed on an imaging surface 13a of an imaging tube 13. The optical axes of the photographing lens 12 and the imaging tube 13 are arranged to coincide with each other.

The image pickup tube 13 converts the formed optical image into an electrical signal, which is amplified and processed by the signal processing circuit 14 to a predetermined video signal. The video signal processed by the signal processing circuit 14 is supplied to an electronic viewfinder 15 built in the rear of the video camera body 11 and using a small cathode ray tube, and a video output terminal 16 for connection to a portable VTR (not shown). ing. Normally, each time the push button switch 17 is pressed, a signal for switching the VTR between recording mode and pause mode is sent through the control circuit 18 from the output terminal 20 to the VT.
Supply to R. The acceleration sensor 19 is attached to the video camera body 11, and the control circuit 18 is connected to the acceleration sensor 19, which detects when an acceleration higher than a preset value is applied to the video camera body 11.
When the acceleration sensor 19 detects that an acceleration higher than a preset value has been applied to the VTR, the VTR in the recording mode is controlled to be switched to the stop mode or the pause mode.

The operation of the video camera having the above configuration will be explained.

Normally, when recording with a video camera, push button switch 17
Press to switch the VTR from recording mode to pause mode. In order to change the shooting scene, the user often takes his eyes off the electronic viewfinder 15 in this state and walks around with the video camera body 11 in his hand, but due to a malfunction, the camera does not switch to pause mode and remains in recording mode. Or, if the push button switch 17 is pressed by mistake at this time, the VTR switches to the recording mode and starts recording the ground or sky that is not intended to be photographed. At this time, since the user is holding the video camera body 11 in his hand and moving while walking unsteadily, a considerably larger acceleration is applied to the video camera body 11 than when shooting. If the magnitude of the acceleration is larger than the preset acceleration, the acceleration sensor 19 detects it,
Since the control circuit 18 switches the VTR to stop mode or pause mode, it does not continue to record the ground or sky.

Incidentally, in recent years, a camera-integrated VTR that integrates a video camera body and a VTR has been commercialized, but even if this camera-integrated VTR is configured as used in this embodiment, It is clear that the effects described above can be fully exhibited.

Effects of the Invention As described above, the video camera of the present invention includes a photographing lens for photographing a subject, a photoelectric conversion means for converting an optical image from the photographing lens into an electrical signal, and the photographing lens and the photoelectric conversion means. a holding means for holding the video tape recorder so that their optical axes coincide with each other, the acceleration sensor detecting the magnitude of acceleration; and the acceleration sensor detecting a preset acceleration when the video tape recorder is in recording mode. The control means is configured to switch the video tape recorder to a stop mode or a pause mode by detecting an acceleration larger than the above value, and the control means switches the video tape recorder to a stop mode or a pause mode by detecting an acceleration larger than the above value. Even if the device remains in the recording mode due to pressing or an erroneous operation, it can immediately switch to the stop mode or pause mode by detecting acceleration, thereby minimizing mistakes in photographing.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the main parts of a video camera according to an embodiment of the present invention, and FIG. 2 is a diagram showing the main parts of a conventional video camera. 11... Video camera body, 12...
Photographing lens, 17...Push button switch, 18...
...Control circuit, 19...Acceleration sensor.

Claims (1)

[Claims] It has a photographic lens for photographing a subject, a photoelectric conversion means for converting an optical image from the photographic lens into an electrical signal, and a holding means for holding the photographic lens and the photoelectric conversion means so that their optical axes coincide. The video camera includes an acceleration sensor that detects the magnitude of acceleration, and when the video tape recorder is in a recording mode, the acceleration sensor detects an acceleration that is larger than a preset acceleration value. A video camera comprising: a control means for switching the video camera to a stop mode or a pause mode.