JPS61174828A - Video camera - Google Patents

Abstract

PURPOSE:To perform communication simultaneously with video camera photographing by providing a camera body with a radio means consisting of an audio MODEM and an antenna and a switch for switching between the radio means and a monitor recording means. CONSTITUTION:In case of communication between two video cameras or the like, the video camera in the transmission side connects the output of a microphone 2 to a modulating circuit of a MODEM 7 through an amplifier 16 and transmits signals from an antenna 6. A received signal from the video camera of the other party is connected to an earphone 3 from the antenna 6 through a demodulator of the MODEM 7 and an amplifier 13. In case that sounds from the microphone 2 are recorded in a recorder part 4 while being monitored by the earphone 3, a short bar 18 of a changeover switch 8 short-circuits contacts 12 and 14, and the other short bar 19 short-circuits contacts 11 and 15. Thus, the video camera functions as a video camera of the audio recording system.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a video camera, and particularly to a video camera equipped with communication means.

[Prior art]

For example, in broadcast television cameras.

The cameraman and producer communicate with each other about camera angles, subjects, etc. during filming.

Traditionally, it has been used as an intercom (INTPR-C) for applications such as
A wired (four-wire type or two-wire type using a hybrid) communication means called OMUNICATION is used.

However, although home video cameras are equipped with microphones for recording and earphones for monitoring, there are no such communication methods.
For example, between two video cameras, or between a photographer and a conductor.

To accomplish the same thing, a dedicated communication means such as a transceiver must be used separately. Therefore, when a user goes on a vacation with a video camera and wants to perform voice communication as described above, he or she must also carry a transceiver, which is inconvenient.

〔the purpose〕

The present invention was made to solve the above-mentioned conventional inconveniences, and an object of the present invention is to provide a new video camera equipped with wireless communication means.

〔Example〕

FIG. 1 shows an embodiment of the circuit configuration of the audio communication means in the video camera of the present invention.

1 is a camera section of the video camera body, a microphone 2, an earphone 3. and a monitor recording means 5 consisting of a recorder section 4 are connected.

A is a wireless communication means, and its configuration is as follows: 6 is an antenna for transmitting and receiving audio signals, 7 is a modulator/demodulator for audio transmission, and a modulation circuit that FM modulates the audio signal from the microphone 2 and outputs it to the antenna 6. and a modulation/demodulation circuit that demodulates the input from the antenna 6 and outputs it to the earphone 3. 8
is a mechanical changeover switch as changeover switch means interposed between the modem 7 and the monitor recording means 5 consisting of the microphone 2, earphone 3, and recorder section 4;
9 is a contact from the demodulation circuit of the modulator/demodulator 7, 10 is a contact to the modulation circuit of the modulator/demodulator 7, and 11 is a contact to the recorder section 4.

Further, 12 is connected to the earphone 3 via the amplifier 13 (
14 and 15 (common) are the amplifier 1 contacts.
This is a contact point connected to the microphone 2 via 6. 1
7 is a switch body that integrally interlocks two shorters 18 and 19 in order to turn on and off each of the above-mentioned contacts. is configured to switch between contacts 10, 15 and 11.

Next, the action will be explained.

When communicating between two video cameras or between a video camera and a transceiver, the transmitting video camera connects the output of the microphone 2 to the modulation circuit of the modem 7 via the amplifier 16. The signal is transmitted from the antenna 6, and the received signal from the other party is transmitted from the antenna 6 to the modem 7.
The demodulator is connected to the earphone 3 via the amplifier 13. That is, one shorter 18 of the changeover switch 8 shorts the contact 9.12, and the other shorter 18 shorts the contact 9.12.
9 shorts contacts 10.15. This allows wireless communication between two points.

In addition, when recording the sound of the microphone 2 on the recorder section 4 while monitoring it with the earphone 3, selector switch 8
Switch as follows.

That is, one shorter 18 short-circuits contacts 12 and 14, and the other shorter 19 short-circuits contacts 11 and 15. This allows it to function as an audio recording type video camera.

According to this embodiment, it is possible to freely communicate with the other party via wireless communication by simply mechanically switching the changeover switch on the camera body, without having to take the trouble of separately installing a communication device such as a transceiver. However, the changeover switch means of the above embodiment is not limited to a mechanical one.

For example, a semiconductor switch such as PET or a transistor may be used.

In addition, when connecting the output of the microphone 2 so as to monitor it with the earphone 3, instead of returning the output of the microphone amplifier 16 directly to the earphone as in the above embodiment, various processes are performed and then the output is sent through the contacts 12 and 14. I don't like it
It may also be connected to the horn 3.

In the above description, a type in which the camera section 1 and the recorder section 4 are separated has been described, but of course a video camera in which the two are integrated may also be used.

〔effect〕

As explained above, by adding a wireless communication means consisting of an audio modulator/demodulator and an antenna and a switch to a conventional video camera equipped with a microphone and earphone, it is now possible to perform the necessary communications at the same time as the video camera is shooting. This eliminates the hassle of carrying communication equipment such as a transceiver in addition to the camera.

[Brief explanation of the drawing] FIG. 1 is a circuit diagram of an embodiment of the present invention. 2・・・・・・・・・Microphone 3・・・・・・Earphones 4・・・・・・Recorder section 5... Recording means 6・・・・・・・・・Antenna 7...Modulator/demodulator

Claims (1)

[Claims] In a video camera equipped with a monitor recording means consisting of a microphone, an earphone, and a recorder section, the camera body includes a wireless communication means consisting of an audio modem and an antenna, and a switch for arbitrarily switching between the wireless communication means and the monitor recording means. A video camera characterized by comprising means.