JPH01228275A - Video camera - Google Patents

Abstract

PURPOSE:To recognize a state display required for photographing even when separated from a video camera main body transmitting a view finder signal to the video camera main body from a removable RF transmitter as a television radio wave. CONSTITUTION:A picture signal (a) from the image pickup part 111 of the video camera main body 110 is converted to a video signal (b) in a video circuit 112 and recorded and reproduced in a recording and reproducing circuit 113. To an electronic view finder 115, the video siganl (b) and a state display signal (c) outputted from a character generator 116 are inputted to recognize a photographed picture and a state display. A view finder signal (d) is outputted as a television radio wave (f) modulated through the RF transmitter 120. A light receiving part 118 receives a control signal (g) fed by an infrared ray from a wireless remote controller 130 and feeds to a control 114 as an electric signal. A liquid crystal television 140 receives the television radio wave (f).

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention is useful when applied to a video camera that takes pictures by remote control using a wireless remote control.

<Prior Art> One mode of photographing using a video camera is remote photographing, in which the photographer is not near the video camera but is at a distance. The apparatus used for such remote photography and the photography situation will be explained with reference to FIG. 3.

In FIG. 3, the imaging section 11 of the video camera 10 includes a lens, an imaging device, etc., and outputs an image signal a representing an image of a subject. The video circuit 12 processes the image signal a and outputs it as a video signal which is an NTSC composite color video signal. The recording/playback unit 13 has a rotating head mechanism, a recording/playback circuit, and a tape insertion space, and records video signals on a loaded videotape, and records video signals recorded on the videotape. play the music. Recording and playback operations are performed based on commands from the control unit 14. During recording, the color signal of the video signal is low frequency converted and the luminance signal is FM modulated before being recorded. In this case, the reproduced signal is subjected to signal processing opposite to that described above, and the video signal (N
TSC composite color video signal) b is output.

Commands from the drug dispensing unit 14 are output in response to operations by an operation unit (not shown) having operation buttons. The operating section is fixedly installed on the video camera 10 or connected to the drug dispensing section 14 via a wire cable.

The electronic viewfinder 15 has a built-in louver and a monitor television using a small black-and-white cathode ray tube of about 1.5 inches. During shooting, a video signal output from the video circuit 12 is input to the electronic viewfinder 15 via the recording/playback section 13, and the image displayed by the video camera 10 can be viewed and confirmed as it is. During playback, the video signal played back from the videotape by the recording/playback section 13 is input, and the image recorded on the videotape can be checked. A status display signal C is sent from the camera.Status display No. 42C is information indicating the status required for shooting, such as recording standby, recording in progress, insufficient output warning, battery warning, tape end alarm, etc. When this status display signal C is sent, characters and symbols indicating the status are displayed on the cathode ray tube of the electronic viewfinder 15 superimposed on the photographed film image.In this specification, the electronic viewfinder 15 The combination of the video signal S sent to the camera and the status display signal C is defined and used as the viewfinder signal d.

Video No. 48 is sent from the recording/playback section 13 to the output section 17, and an audio signal is sent from an audio circuit (not shown).
Power is sent from a power source (battery, battery) built into the video camera 10. The output section 17 has a video signal terminal, an audio signal terminal, and a power terminal for supplying power to external equipment.

The RF (radio frequency) transmitter 20 can be attached to and detached from the output section 17 by a connector mechanism, and when attached to the output section 17, receives electric power, video signals, and audio signals from the output section 17. The video signal and the audio signal are converted into television radio waves e by the RF transmitter 20 and sent out.

The LCD television 30 is used as a small monitor device,
The photographer is carrying it. Therefore, even if the photographer is far away from the video camera 10 when shooting, the TV radio waves e.
By receiving this on the LCD TV 30, the captured movie image can be confirmed on the LCD TV 30.

<Problem to be solved by the invention> By the way, in the prior art shown in FIG.
If the photographer is far away from the camera, the photographer will not be able to check the status display necessary for shooting. In other words, unlike the electronic viewfinder 15, conventionally, the liquid crystal television 30 does not display any characters or symbols indicating the status. For this reason, photographers in remote locations are anxious because they do not know how much charge is left in the battery or if the tape is running out, and they are also unable to take appropriate measures in advance for each situation (for example, the tape runs out), causing them to miss out on photo opportunities. Sometimes it happens.

The present invention has been made in view of the above-mentioned prior art, and provides a video camera that allows the user to check the status display necessary for photographing even when the user is at a distance from the video camera.

Means for Solving Two Problems> The present invention for solving the above problems is that the viewfinder signal sent to the electronic viewfinder can be sent as television radio waves by an RF transmitter that is detachable from the video camera body. The gist is as follows.

Example of implementation FIG. 1 shows a video camera according to an embodiment of the present invention.

As shown in the figure, in this video camera, an electronic viewfinder 115 is detachably attached to a video camera body 110, and when the electronic viewfinder 115 is removed, an RF transmitter 120 can be attached at that position. It has become.

Here, the circuit configuration and operation of the video camera according to this embodiment will be explained based on FIG.

In FIG. 2, an imaging unit 111 of a video camera body 110
The image signal a outputted from the video circuit 112 becomes a video signal (NTSS composite color image number) b, and the recording/reproducing section 113 records and reproduces the video signal on a videotape. The electronic viewfinder 115 includes
A viewfinder signal d consisting of a video signal and a status display signal C output from the character generator 116
is input, and the captured image and status display can be confirmed through the electronic viewfinder 115. A video signal is also sent to the output section 117. Up to this point, the configuration is similar to the conventional one.

Furthermore, in this embodiment, the video camera body 110 is equipped with viewfinder signal terminals 119a and 119b, and when the electronic viewfinder 115 is attached to the video camera body 110, the viewfinder die No. d connects to the signal terminal 119a. When the RF transmitter 120 is attached, the viewfinder signal d is sent to the electronic viewfinder 115 via the signal terminal 119b.
) is sent to transmitter 120. When the RF) transmitter 120 receives the viewfinder signal d, it modulates it and outputs it as a television radio wave f.

The light receiving unit 118 is a wireless remote control (operation unit) 13
The control unit 114 receives the control signal g sent by infrared rays from the control unit 114 and sends it to the control unit 114 as an electrical signal. The control unit 114 controls the photographing operation and the reproduction operation according to the control signal based on the electric signal.

On the other hand, the liquid crystal television 140 receives television radio waves f.

In order to perform normal shooting (not remote shooting) with the video camera of this embodiment, the video camera body 1
10 is equipped with an electronic viewfinder 115. Then, the photographer can check the captured image and status display by looking through the electronic viewfinder 115.

In addition, for remote shooting, the photographer must use the LCD TV 1
40 and remote control 130, as well as RF)
A transmitter 120 is attached to the video camera body 110.

The photographer operates the remote control 130 at a location away from the video camera body 110 to cause the video camera body 110 to take a picture. Then, the RF transmitter 120 sends out a television radio wave f, and by receiving it on the LCD television 140, the photographed image and status display are displayed on the screen of the LCD television 140 and can be checked even from a remote location. You can do it.

Alternatively, another video tape recorder may be connected to the output section 117 for dubbing, or an RF transmitter may be connected to the output section 117 to transmit the video tape signal as radio waves, as in the prior art shown in FIG. Good too.

In the above embodiment, an electronic viewfinder 115 and an RF transmitter 120 are provided for the video camera body 110.
I was only able to wear one of them, but
RF that always has an electronic viewfinder in the video camera body and outputs the viewfinder signal as radio waves.
) The transmitter may be additionally attached during remote photography.

<Effects of the Invention> As specifically explained above in conjunction with the embodiments, according to the present invention, even if the user is at a distance from the video camera body, it is possible to check not only the photographed image but also the status display necessary for photographing.

Therefore, it is possible to eliminate photographing mistakes.

[Brief explanation of the drawing]

FIG. 1 is an external view showing a video camera according to an embodiment of the present invention, FIG. FIG. In the drawing, 110 is a video camera body, 115 is an electronic viewfinder, 120 is an RF transmitter, 130 is a remote control, and 140 is a liquid crystal television. Patent application Agent: Fuji Photo Film Co., Ltd.

Claims (1)

[Claims] Shooting and playback are performed based on control signals sent from a wireless remote control, and viewfinder signals consisting of video signals and status display signals are input to display captured images and playback images, and to adjust the conditions necessary for shooting. The video camera body has an electronic viewfinder that projects the display, and is further equipped with a viewfinder signal terminal to which the viewfinder signal is supplied, and the video camera body is attached to the viewfinder terminal of the video camera body so that it can be attached to and detached from the viewfinder terminal, and when attached, the viewfinder A video camera comprising: an RF transmitter that modulates a viewfinder signal obtained from a signal terminal and transmits it as a television radio wave.