JPH0548942A - Video wireless transmitter - Google Patents

Abstract

PURPOSE:To facilitate the signal connection, etc., with an input source. CONSTITUTION:Respective corresponding terminals 50, 52 and 54 to be able to attach to respective external terminals 40 and 42 of the video and voice provided at the main body of a video camera such as a cam coder and an external terminal 44 for power supply are provided at the main body of a transmitter 14. By such a constitution, since the video output, voice output and power from a video camera 12 directly are communicated to the transmitter 14 side without connecting the cable, the transmitting preparation is completed only by fitting the transmitter 14 to a video camera main body 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video wireless transmitter suitable for application to a video wireless transmission / reception system or the like, and more particularly to a video wireless transmitter which can be directly attached to a video camera body such as a camcorder.

[0002]

Video wireless transceiver systems are known. This video wireless transmission / reception system is an indoor transmission / reception system that is prevalent in the United States. For example, when the video signal (first television signal S1) captured by the video camera 12 is viewed on the television receiver 26 as shown in FIG. 6, a cable connecting the video camera 12 and the television receiver 26 is generally used. 1 to
Since it is as short as 2 m, it is necessary to approach the television receiver 26 and operate the video camera 12.

In order to solve such inconvenience, a video wireless transmission / reception system 10 has been developed so that the video camera 12 can be operated from a place apart from the television receiver 26 to some extent. Is.

The outline thereof is as shown in FIG. 6. For example, the first television signal S1 output from the video camera 12 is transmitted by using the video wireless transmitter 14. 16 is a transmitting antenna (rod antenna or the like). In the United States, the current frequency band of TV channels (8
Since the frequency band higher than 3 channels is addressed as a civic band, the transmission frequency is video wireless frequency (902-928MH) in this civic band.
z).

A receiving antenna (rod antenna or the like) 18 is attached to the receiver 20 installed indoors, and the first television signal S1 received by the receiving antenna 18 is transmitted in the receiver 20 to a television channel. After being frequency-converted into a television signal of an empty channel (for example, 3 channels or 4 channels of VHF band), it is supplied to an antenna input terminal (not shown) of the television receiver 26 via the input switching means 22. It

The input switching means 22 includes an outdoor antenna 2
A television signal for broadcasting (second television signal S2) received at 4 or the like is supplied, and one of them is selected manually or automatically. The input switching means 22 is usually built in the receiver 20. In addition to the video camera 12, the input source source for the transmitter 14 may be a stationary VCR (VCR), a cable TV, or the like, and the input source source is not particularly limited.

The transmitter 14 is located near the source of the input source and is therefore typically located near the video camera 12. Therefore, the video camera 12 and the transmitter 14 are often placed on a Western table or the like.

[0008]

By the way, the output signal (RF output of video output and audio output) from the video camera 12 is connected to the transmitter 14 by the connection cable 13. Then, the transmitter 14 is supplied with power by using, for example, an AC adapter.

As described above, when the user wants to enjoy the image of the video camera 12 on the television receiver 26, the video camera 12 and the transmitter 14 must be connected by the connection cable 13 or the power source must be connected. Therefore, in addition to the difficult preparation, the transmission / reception system cannot be used when the connection cable 13 or the like is lost. Therefore, managing and storing accessories is difficult.

Therefore, the present invention solves such a conventional problem and proposes a video wireless transmitter capable of easily connecting an input source to the transmitter without using a connecting cable or the like. It is a thing.

[0011]

In order to solve the above-mentioned problems, according to the present invention, the external terminals for video and audio and the external terminals for power supply are provided on the main body of a video camera such as a camcorder. The transmitter is provided with corresponding terminals that can be attached to the external terminals.

[0012]

As shown in FIG. 5, the video camera main body 30 is provided with terminals 40 and 42 for external output of video and audio, and a power source (battery or AC) attached to the video camera main body 30. A power supply terminal 44 capable of supplying an (adapter) to the outside is provided.

On the video wireless transmitter 14 side, external terminals 40, 42, 44 and terminals 50, 52, 54 that can be attached are integrally provided. These terminals 50, 52, 54 are connected to the external terminals 40, 42,
If it is attached to 44, the video camera body 30 and the transmitter 14
This means that it is completely electrically and mechanically connected.

Therefore, the transmitter 14 is connected to the video camera 1
The preparation for transmission is completed simply by attaching it to the main body 30 as a kind of accessory of item 2.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a case where an example of a video wireless transmitter according to the present invention is applied to the above-mentioned camcorder will be described in detail with reference to the drawings.

Video cameras such as camcorders are often constructed as shown in FIG. In the figure, 3
Reference numeral 0 is a video camera body, 32 is an optical or electronic viewfinder, and 34 is a video cassette mounted on the video camera body 30. A plurality of external terminals are provided on a part of the video camera main body 30, that is, on the side surface of the main body on the video cassette mounting surface side in this example.

In the figure, only the RF modulator terminal relating to the present invention is shown, 40 is an external terminal for video output (video terminal), 42 is an external terminal for audio output (audio terminal), and 44 is a power supply. External terminal (power supply terminal)
In each case, a pin jack (female type) configuration is adopted. The arrangement relationship and the positional relationship of the respective external terminals 40, 42, 44 are merely examples.

With respect to the video camera main body 30 provided with such external terminals 40, 42 and 44, the transmitter 14 is constructed in the present invention so that it can be attached to these terminals. That is, as shown in FIG.
An input terminal 50 for video, an input terminal 52 for audio, and an input terminal 54 for power supply are provided so as to correspond to 0, 42, and 44, respectively.

FIG. 2 shows the details of the transmitter 14
It is configured as a flat rectangular parallelepiped shape (any size), and the plurality of input terminals 5 described above are provided on one surface 14a side thereof.
0, 52, and 54 are provided so as to maintain the above-described predetermined relationship, and all of them have a pin plug (male type) configuration in relation to the external terminals 40, 42, and 44. The input terminals 50, 52, 54 are all bulging portions 60 on one surface 14a.
Although it is positioned above, this is to facilitate the mounting operation when mounting the transmitter 14 on the video camera body 30 as shown in FIG.

On the other surface 14b side of the transmitter 14, as shown in FIG. 3, a transmitting antenna 16 is fixedly attached to a rotary hinge 58, which is 360 ° in the horizontal direction and 1 in the vertical direction.
It can rotate freely by 80 °. Therefore, the orientation of the transmitting antenna 16 can be freely changed (see FIG. 4).
reference).

The transmitter 14 thus constructed is mounted on the video camera main body 30 as a kind of accessory of the video camera 12 as shown in FIG. By this attachment, the video output during reproduction of the video camera 12 is supplied to the video input terminal 50 through the external terminal 40. Similarly, the audio output is supplied to the audio input terminal 52 via the external terminal 42, and the DC power of the video camera 12 is supplied to the power input terminal 54 via the external terminal 44 as the power supply for the transmitter. become.

As a result, the video camera 12 and the transmitter 14 can be electrically connected without using the connection cable 13, and the driving power can be supplied externally without using an AC adapter or the like. The transmitter 14 can be driven to transmit the first television signal S1 simply by setting the video camera 12 in the reproduction mode after mounting the camera body 30.

In the above description, the present invention has a transmitter configuration that can be attached to a video camera such as a camcorder, but any other video camera having an external terminal for an RF modulator in its main body is used. The present invention can be applied. However, since the arrangement and configuration of the external terminals differ depending on the model, in that case, the transmitter side may be changed to match the configuration.

[0024]

As described above, in the video wireless transmitter according to the present invention, the video and audio external terminals and the power supply external terminal provided on the main body of the video camera such as a camcorder can be attached. The corresponding terminals are provided on the transmitter body.

According to this, preparation for transmission is completed simply by mounting the transmitter on the main body of the video camera. Therefore, there is a practical advantage that the troublesome work of connecting the video camera and the transmitter main body with a signal cable or connecting a power source can be eliminated.

In addition to this, conventionally, when a cable or the like is lost, the transmission / reception system cannot be used, so it is difficult to manage and store accessories such as the cable. Since the present invention does not require such a trouble, it is very easy to manage.

From the above, the present invention is extremely suitable for application to a video wireless transmission / reception system using the video camera such as the above-mentioned camcorder as an input source source of a transmitter.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a usage state of a video wireless transmitter according to the present invention.

FIG. 2 is a perspective view of a video wireless transmitter according to the present invention.

FIG. 3 is a perspective view of the video wireless transmitter from the side opposite to that of FIG.

FIG. 4 is a diagram showing an example of a usage state of the video wireless transmitter according to the present invention.

FIG. 5 is a side view showing an example of a video camera.

FIG. 6 is a system diagram of a video wireless transmission / reception system.

[Explanation of symbols]

 10 transmitting / receiving system 12 video camera 14 transmitter 16 transmitting antenna 20 receiver 22 input switching means 26 television receiver 40, 42, 44 external terminal 50, 52, 54 input terminal

Claims (1)

[Claims] 1. A transmitter main body is provided with corresponding terminals that can be attached to the external terminals for video and audio and the external terminals for power supply provided on the main body of a video camera such as a camcorder. A video wireless transmitter characterized by: