JPH09130657A - Adaptor and light emitting device for video camera equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a flash small in size and light in weight and to make the flash removable from the video camera equipment. SOLUTION: An adaptor 10 is provided with a power input terminal 11, a video input terminal 12 and a signal output terminal 12 corresponding respectively to output terminals of power voltage and a video signal (not shown) of the video camera equipment. The adaptor 10 is operated by a power voltage supplied via the power input terminal 11 and separates a vertical synchronizing signal from the video signal supplied via the video input terminal 12 and provides an output of the vertical synchronizing signal via the signal output terminal 13. A light emitting device 20 receives the vertical synchronizing signal from the adaptor 10 via a cable 22 or the like and a flash light 21 is flashed based on the vertical synchronizing signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting device or the like for a video camera device which emits a flash in synchronization with a synchronizing signal of a video signal output from the video camera device.

[0002]

2. Description of the Related Art Generally, a video camera device does not use a flash as an illumination for photographing and does not have a strobe light. However, some video camera devices and the like include a strobe light capable of flash photography in order to record an image in which objects moving at high speed such as a golf swing are superposed.

[0003]

However, although the video camera device has been miniaturized in recent years and can be freely carried to various places, a device provided with the strobe light as described above is provided especially when it is small. Was not done.

Therefore, although a light emitting device capable of flash photography by flashing a strobe light is provided separately from the video camera device, the light emitting device flashes the strobe light in synchronization with the video signal of the video camera device. Therefore, the video camera device could not record a high quality image. Further, since such a light emitting device is not detachable from the video camera device, it is very inconvenient if it is attached to a small video camera device, which is an obstacle when not taking a flash image. Further, it is necessary to mount a light emitting device according to the size of a particularly small video camera device, and it is expected that the size and weight of the device will be reduced.

The present invention has been made in view of the above circumstances, is compact and lightweight, can be attached to and detached from a video camera device, and emits a flash in synchronization with a video signal from the video camera device. An object of the present invention is to provide a light emitting device for a video camera device.

[0006]

In order to solve the above-mentioned problems, an adapter device for a video camera device according to the present invention is provided corresponding to a power supply voltage and a video signal output terminal of the video camera device, respectively. It operates by the power supply input terminal and the video input terminal, the signal output terminal, and the power supply voltage supplied through the power supply input terminal, and separates the vertical synchronization signal from the video signal supplied through the video input terminal. , And a sync separation means for outputting the vertical sync signal via the signal output terminal.

Further, the light emitting device for the video camera device according to the present invention is provided with a power input terminal and a video input terminal respectively provided corresponding to the power supply voltage and the video signal output terminal of the video camera device, and the signal output terminal. And a vertical sync signal is separated from the video signal supplied through the video input terminal by operating with the power supply voltage supplied through the power input terminal, and the vertical sync signal is output through the signal output terminal. It is provided with adapter means having a sync separation means for outputting and light emitting means for emitting light based on a vertical synchronizing signal from the adapter means.

Thus, in the light emitting device for the video camera device, the power source and the video signal are supplied from the video camera device by combining the signal generating means with the video camera device. The signal generating means separates only the synchronizing signal of the supplied video signal and supplies the synchronizing signal to the light emitting means. The light emitting means emits light from the flash based on the supplied synchronization signal.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment of an adapter device for a video camera device and a light emitting device for a video camera device according to the present invention will be described in detail below with reference to FIGS. .

The light emitting device 1 for the video camera device according to the first embodiment separates a vertical synchronizing signal (hereinafter referred to as a V synchronizing signal) from the supplied video signal, and outputs the V synchronizing signal.
The adapter device 10 that outputs a synchronization signal and the light emitter 20 that emits a flash based on the V synchronization signal from the adapter device 10 are provided.

As shown in FIG. 1, for example, the adapter device 10 has an outer shape of a substantially rectangular parallelepiped, and a front surface facing the video camera device 100 has a power supply voltage and a video signal output from the video camera device 100. A power input plug 11 and a video input plug 12 are provided corresponding to the respective output jacks (not shown). Also, the adapter device 1
On the side surface of 0, a signal output jack 13 for outputting a V sync signal is provided. Although a voice input plug 14 is provided on the front surface of the adapter device 10, it is not connected to the internal circuit of the adapter device 10.

The light emitter 20 is, for example, as shown in FIG.
It has a substantially rectangular parallelepiped outer shape that is easy to hold with one hand, and has a strobe light 21 on its front surface and a cable 22 having a plug 23 at its tip, and this plug 23 is connected to the signal output jack 13. By inserting, a V sync signal or the like is supplied from the adapter device 10 via the cable 22.

As a result, the adapter device 10 has its input plugs connected to the video camera device 10 as shown in FIG.
It is combined with the video camera device 100 by inserting it into each output jack of 0.

The light emitting device 1 for the video camera device
Is supplied with a direct current voltage of, for example, 6 volts from the video camera device 100, the light emitting diode D1 is turned on, the circuit of the light emitting device 1 itself for the video camera device is operated, and a capacitor (not shown) in the light emitting device 20 is activated. You can charge the flash and be ready for flash photography. Then, when the video camera device 100 starts photographing a subject, the video signal is supplied to the adapter device 10 via the video terminal pin 12. In the video camera device 100, when a flash button (not shown) provided in the light emitting device 1 for the video camera device is pressed during shooting, the adapter device 10 causes the light emitting device to emit only the V sync signal from the supplied video signal. 20
, And the light emitter 20 outputs, based on the V sync signal,
Flash the strobe light 21. As a result, the video camera device 100 can perform flash photography.

More specifically, as shown in FIG. 3, the adapter device 10 removes a high frequency signal such as a horizontal synchronizing signal of the supplied video signal by a transistor Tr to obtain V.
The sync signal is separated and the V sync signal is delayed by the capacitor C1. In that circuit configuration,
For example, the transistor Tr has an emitter connected to the video input plug 12 via a resistor and is forcibly turned on / off according to the signal level of the supplied video signal. Here, the capacitors connected to the collector and the emitter of the transistor Tr both activate and deactivate the transistor Tr by charging and discharging.

One of the capacitors C1 is grounded, and the other is connected to the resistor R2 and the anode of the diode D2. The cathode of the diode D2 is connected to the collector of the transistor Tr via two NOT elements as a buffer.

The transistor Tr is turned off when a high-level (hereinafter referred to as H-level) video signal, that is, a video signal for each field is supplied, and a direct-current power supply voltage supplied via the resistor R1. Thus, an H level signal is supplied to the collector. Further, the transistor Tr is turned on when a low level (hereinafter referred to as L level) video signal, that is, a V sync signal between fields is supplied, so that an L level signal is supplied to its collector. .

In other words, the transistor Tr has the structure shown in FIG.
As shown in (a) and (b), when a video signal for each field is supplied to the emitter, an H level signal is output from the collector, and when a V sync signal is supplied to the emitter, The L level signal is output from the collector.

On the other hand, the capacitor C1 is a transistor T
When the collector of r is at the H level, the diode D2 is reverse-biased and thus charged through the resistor R2.
Since the diode D2 turns on after the charging is completed,
The signal from the transistor Tr is supplied to the light emitter 20 via the two NOT elements and the synchronization signal terminal hole 13.
Further, when the collector of the transistor Tr is at L level, the capacitor C1 is discharged through the resistor R2 because the diode D2 is forward biased. Diode D2
When the discharge ends, the signal from the transistor Tr is supplied to the light emitter 20 via the synchronization signal terminal hole 13 and the like.

Here, the charging / discharging time of the capacitor C1 is determined by the time constant which is the product of the resistance value and the electrostatic capacity.
Therefore, since the resistance value of the resistor R2 is larger than the resistance value of the diode D2 in the forward bias, the capacitor C
The charging time of 1 is extremely longer than the discharging time. That is, the signal output from the adapter device 10 is as shown in FIG.
As shown in (b) and (c), when the video signal supplied to the adapter device 10 changes from H level to L level, it changes from H level to L level almost at the same time.
When the video signal supplied to the adapter device 10 goes from the L level to the H level, it goes from the L level to the H level after a short delay. In this way, as shown in FIG. 4 (c), the signal output from the adapter device 10 separates only the V sync signal from the video signal, delays the V sync period by a predetermined delay, and emits the light. Is supplied to.

The light emitter 20 discharges the above-mentioned capacitor inside the flash device 21 based on the V sync signal supplied from the adapter device 10 via the cable 22 to cause the strobe light 21 to flash. In this way, the video camera device 100 can perform flash photography.

As described above, the light emitting device 1 for the video camera device causes the strobe light 21 to flash in synchronization with the video signal from the video camera device 100, so that the video camera device 100 has good image quality in flash photography. Recorded images can be provided.

The light emitting device 1 for the video camera device is also provided.
Obtains a power source for flashing the strobe light 21 from the video camera device 100 and does not require its own power source, so that the main body can be made compact and lightweight, which is extremely convenient to carry. .

Further, a light emitting device 1 for a video camera device
Since it can be attached to and detached from the video camera device 100, it is possible to select whether or not to attach it depending on the place and the weather, and as a result, the convenience of operating the video camera device 100 is improved.

Next, a second embodiment of the light emitting device for a video camera device according to the present invention will be described with reference to FIGS.
This will be described with reference to FIG. The same parts as those described in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 5, the light emitting device 50 for the video camera device according to the second embodiment is configured so that the functions of the adapter device 10 and the light emitter 20 in the first embodiment are integrated. To be done.

That is, the light emitting device 50 for the video camera device is, for example, as shown in FIG.
00 is a rectangular parallelepiped having substantially the same height dimension, and the power input plug 11 and the video input plug 12 described above are provided on the side surfaces facing the video camera device 100.
The light emitting device 50 for the video camera device can be combined with the video camera device 100, as shown in FIG. 6, so that the user holds the video camera device 100 with one hand and holds the light emitter 20 with one hand. It is not necessary, and convenience of operation can be achieved by freeing one hand.

The video camera device 100 can also perform stroboscopic photography by continuously flashing the light emitting device 1 for the video camera device.

Further, although the above-mentioned video camera device records a moving image, recently, a video camera device capable of recording a still image is also provided. In order to record a still image, such a video camera device reproduces a still image by, for example, capturing one field of image data of a moving image recorded in a memory and reading the image data. be able to.

Therefore, as can be applied to such a video camera device, a light emitting device for a video camera device emits light when a release button (not shown) for flash photography of a still image is pressed. The strobe light 21 can also be made to flash based on the V sync signal initially supplied to the device 20. As a result, the video camera device can capture a still image by flash photography even when the amount of light is insufficient and the image quality is apt to deteriorate, such as in a room.

Further, when the reproducing device has a flash memory for automatically detecting the flash shot image, for example, when a golf swing or the like is flash shot, the image in which the golf swing or the like is superposed is reproduced. can do.

The circuit in the adapter device 10 described above is not limited to the embodiment shown in FIG. 3, and is a so-called sync separator capable of extracting a desired signal from the supplied video signal. It goes without saying that the light emitting device for the video camera device is not limited to the one shown in FIGS. 1 and 2 as a matter of course.

[0033]

In the light emitting device for the video camera device according to the present invention, the signal generating means separates only the synchronizing signal of the video signal and supplies the synchronizing signal to the light emitting means, and the light emitting means is based on the synchronizing signal. By emitting light from the flash, the video camera device can obtain a video signal with high image quality.

In the light emitting device for the video camera device, by combining the signal generating means with the video camera device, the power source and the video signal are supplied from the video camera device, so that the light emitting device body for the video camera device is provided. The size and weight of can be reduced.

When the light emitting device for the video camera device is not used, for example, when shooting under a clear sky, the user can remove the light emitting device from the video camera device for convenience of shooting. .

[Brief description of the drawings]

FIG. 1 is a perspective view of a light emitting device for a video camera device according to the present invention.

FIG. 2 is an overall perspective view when the light emitting device for the video camera device is incorporated in the video camera device.

FIG. 3 is a specific circuit diagram of a transmitter of the light emitting device for the video camera device.

FIG. 4 is a timing chart for explaining an operation of extracting only a vertical synchronizing signal from a video signal supplied to the transmitting unit.

FIG. 5 is a perspective view of another embodiment of a light emitting device for a video camera device according to the present invention.

FIG. 6 is an overall perspective view when the light emitting device for the video camera device is incorporated in the video camera device.

[Explanation of symbols]

 10 signal generating unit 20 light emitting unit

Claims (4)

[Claims] 1. A power supply input terminal and a video input terminal provided corresponding to a power supply voltage and a video signal output terminal of a video camera device, a signal output terminal, and a power supplied through the power input terminal. And a sync separation unit which operates by voltage and separates a vertical sync signal from a video signal supplied through the video input terminal and outputs the vertical sync signal through the signal output terminal. Adapter device for video camera devices. 2. A power supply input terminal and a video input terminal provided corresponding to a power supply voltage and a video signal output terminal of the video camera device, a signal output terminal, and power supplied through the power input terminal. An adapter unit having a sync separating unit which operates by a voltage, separates a vertical synchronizing signal from a video signal supplied through the video input terminal, and outputs the vertical synchronizing signal through the signal output terminal; A light emitting device for a video camera device, the light emitting device emitting light based on a vertical synchronization signal from the device. 3. The light emitting device for a video camera device according to claim 2, wherein the adapter means and the light emitting means are separated and independent from each other. 4. The light emitting device for a video camera device according to claim 2, wherein the adapter means and the light emitting means are integrated.