JPH0344870A - Vtr integrated with camera - Google Patents

Abstract

PURPOSE:To select and record a specified sound and also to mix the sound so that an additional effect such as BGM recording at the time of photographing may be obtained by mixing two or more sounds and having a constitution capable of varying the mixed quantity. CONSTITUTION:The sound surrounding the VTR integrated with a camera is converted to an electric signal(sound signal) by an incorporated microphone 1. The sound signal and the sound signal inputted from a sound inputting part 2 are mixed in a sound mixing part 3 at a rate set by a control part 4, and the mixed sound signal is recorded by a sound recording part 5. Thus, by recording only the specified sound in the sound inputting part 2 under the control of the control part 4, each sound can be selected and also by mixing the sound at a certain rate, the additional effect such as the BGM recording can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an audio circuit for a camera-integrated VTR.

[Conventional technology]

FIG. 2 is a pronk diagram of the audio processing circuit of a conventional camera-integrated VTR equipped with, for example, two audio input sections. In the figure, 1 is a built-in microphone, 2 is an audio input section other than the built-in microphone 1, and 6 is a A switching section 5 switches the audio signals from the built-in microphone 1 and the audio input section 2, and 5 is an audio recording section that records the audio selected by the switching section 6.

Next, the operation will be explained.

A camera-integrated VTR can be used to record a subject using the camera, or simply to input video and audio signals from the outside.
It may be used as. First, regarding the sound when photographing a subject with the camera section, the sound at the time of photographing is converted into an electrical signal (audio signal) by the built-in microphone 1, and the sound signal is selected by the switching section 6 to the built-in microphone 1 side. is transmitted to the audio recording section 5 and recorded. When inputting a video signal and an audio signal from the outside and simply using it as a VTR, the audio signal input from the audio input section 2 is selected by the switching section 6 to the audio input section 2 side, and the audio signal is transferred to the audio recording section. 5 and recorded.

[Problem to be solved by the invention]

Since the audio processing circuit of a conventional camera-integrated VTR is configured as described above, it is only possible to simply select and record audio signals input from each audio input section.
There has been a problem in that audio signals input from at least two audio sections cannot be mixed and recorded.

This invention was made in order to solve the above-mentioned problems, and it is possible to select audio signals input from at least two audio input units as in the conventional case, and also to mix the audio signals. The purpose is to obtain a camera-integrated VTR that can be used.

[Means for Solving the Problems] A camera-integrated VTR according to the present invention mixes sounds input from at least two audio input units, and is capable of controlling the mixing ratio.

[Function] The camera-integrated VTR of the present invention has at least two
Since it is possible to mix audio input from two or more audio input units and control the mixing ratio, if you use this control to record only the audio from a specific audio input unit, each audio input will be recorded as before. If you mix them in a certain ratio, you can obtain additional effects such as BGM recording.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing an audio processing circuit of a camera-integrated VTR according to an embodiment of the present invention. an audio mixing unit 4 that mixes audio from the input unit 2;
5 is a control section that controls the mixing amount of the audio mixing section 3; and 5 is an audio recording section that records the audio mixed by the audio mixing section 3 and the control section 4.

Next, the operation will be explained.

The built-in microphone 1 converts sounds surrounding the camera-integrated VTR into electrical signals (audio signals). This audio signal and the audio signal input from the audio input section 2 are mixed by the audio mixing section 3 at a ratio determined by the control section 4. The mixed audio signal is recorded by the audio recording section 5. Therefore, the mixing ratio of each input signal can be freely set by varying the mixing amount with the control unit 4, so it is possible to mix BGM recording when photographing a subject with the camera unit, or to mix external video signals and audio. When inputting a signal and using the VTR section, the sound from the microphone can be mixed, and when you want to select either the sound from the built-in microphone 1 or the sound from the audio input section 2 as in the conventional case, the control section 4 By setting the mixing amount so that either one of the built-in microphones 1 and the audio input section 2 can be selected. Furthermore, it is possible to record only the sound from the external audio input section 2 when shooting, or to record only the sound from the built-in microphone 1 when used simply as a VTR.

In the above embodiment, an example is shown in which the built-in microphone 1 and the external audio input 2 are mixed, but if there are two external audio input systems, the external audio inputs may be mixed.

Further, although the above embodiment shows a case where two voices are mixed, it is also possible to mix a large number of voices, and if there are many voice input units, some of them may be selected, The voices of the selected voice input sections may be mixed in the same manner as described above.

[Effects of the Invention] As described above, according to the present invention, two or more sounds are mixed and the mixing amount can be varied, so that it is possible to select and record a specific sound as in the past. It also has the advantage that it is possible to mix audio to obtain additional effects, such as BGM recording during shooting, for example.

[Brief explanation of drawings]

FIG. 1 shows a camera-integrated VTR according to an embodiment of the present invention.
FIG. 2 is a block diagram showing the audio processing circuit of a conventional camera-integrated VTR. 1...Built-in microphone, 2...Audio human power block, 3.
...Audio mixing block, 4...Control block, 5...
- Audio recording section, 6... switching section. Note that the same reference numerals in the figures indicate the same or equivalent parts. Figure 1 (Voluntary amendment to the procedure) 1. Indication of the case Japanese Patent Application No. 1-181578 2゜Name of the invention Camera-integrated VTR 3゜4゜Relationship with the case Patent applicant address Tokyo 2-2-3 Marunouchi, Chiyoda-ku Name (601) Mitsubishi Electric Corporation Representative Moriya Shiki

Claims (1)

[Claims] (1) A camera-integrated VTR equipped with at least two or more audio input sections, including an audio mixing section that mixes audio signals from each audio input section, and a control section that controls the mixing amount. A camera-integrated VTR featuring