JPH0362388A - Camera integrated VTR - Google Patents

Abstract

PURPOSE:To easily and simply output an FM audio in mixing its right and left channels by forming a jack of the camera incorporated type VTR (movie) with two parallel substrates and connecting a longer terminal pin of an adapter to a jack terminal of one substrate. CONSTITUTION:An output jack of the movie is formed by two parallel print substrates 23 and 24, and a left channel output terminal 25 for the FM audio is provided on the substrate 23. Then, when an adapter having normal long pins is connected with the jack, an R-channel output 17, a video output 19 and an RFDC output 20, etc., are connected via the adapter to a video receiver. When a corresponding pin 2' out of these pins is lengthened in its length, the pin 2'j and the terminal 25 are connected up, and the L-channel output is also supplied, so that the mixing of the R- and L-channels for the FM audio signal is easily performed by simple constitution without any changeover control, etc.

Description

[Detailed description of the invention] Industrial application field The present invention is an RC that can be used by converting stereo into monaural.
This relates to a camera-integrated VTR using an A jack.

Conventional technology In recent years, magnetic recording and reproducing devices have become more and more popular as FM Audio
(Stereo) is progressing. Camera integrated VTR
(hereinafter referred to as movie) is also FM Audi.

is progressing.

Hereinafter, one side of the conventional camera-integrated VTR mentioned above will be explained with reference to the drawings. Figures 3 and 4 are conventional configuration diagrams of a conventional camera-integrated VTR, and FM
1 shows an And io block diagram.

In FIG. 3, 1 is a movie. 2 is the RF adapter terminal, which extracts the signal from the movie.

3 is an RF adapter, and 4 is a television receiver.

In FIG. 4, 6 is a microphone for inputting audio. 6
is a microphone amplifier that amplifies the microphone signal. 7 is a recording signal processing circuit that processes the signal of the microphone amplifier.

A modulator 8 performs FM modulation on the signal processed by the recording signal processing circuit. 9 amplifies the FM modulated signal and converts it to FM
This is a recording amplifier that sends signals to the audio head. 10 rotates the signal from the recording amplifier FM Audi
This is a rotary transformer for transmitting information to the o head. 1
1 is an FM An that records an FM modulation signal on a magnetic tape.
It is a dlo head. Reference numeral 12 denotes a head amplifier that amplifies the FM signal recorded on the magnetic tape by approximately 70 dB, which is reproduced from the FM Audio head 11.

13 is a reproduction signal processing circuit that demodulates the FM signal from the head amplifier. 14 is a jJ near audio signal circuit. 16 is a linear audio head. 16 is an output switching circuit for FM Audio and linear audio, which detects and discriminates the envelope of FM Audio. 17 is an RCA jack which is an audio output terminal and outputs Rah, Lch or linear audio, and is called RohOUT here. 18 has the same specifications as 17, and is referred to here as Loh OUT.

The operation of the conventional movie constructed as described above will be described below. The audio input from the microphone No. 6 is amplified by the microphone amplifier No. 6, subjected to signal processing, and recorded and reproduced on a magnetic tape as linear audio and FM Audio.

The audio output is switched between linear audio and FM Andi6 using the 16 output switching circuits, and the audio signal is output from the 17 and 18 RCA jacks attached to the 1 movie.

The signal is converted into RF signals using the RF adapter 3 connected to the television receiver.

Problems to be Solved by the Invention However, in the above configuration, the RF adapter requires one terminal for video, two terminals for audio, and one power supply for the RF adapter, as well as FM Andi.

When outputting, it is necessary to mix the Rch and Lch and supply it to the television receiver. A mixing circuit for this purpose and a control signal for switching are required, resulting in a complicated configuration and an increase in cost.

In view of the above problems, the present invention provides a camera-integrated VTR that eliminates the above-mentioned mix circuit and switching control signal when using an RF adapter by improving the terminals of the RF adapter.

Means for Solving the Problems In order to solve the above problems, the camera-type VT of the present invention
R is Rc to the RCA jack that outputs the audio signal.
A terminal is provided to connect h and Lch.

When a commercially available RCA pin cord is inserted into the RCA jack, only the Rch terminal is connected.

Next, increase the length of the RCA pin of the RF adapter,
It has a configuration in which it is connected to the Roh and Lch terminals when inserted.

Function The present invention has the above-described configuration to connect the RF adapter to the RCA
The pin can mix Rah and Lch when playing FM Audio. During linear audio reproduction, Rch and Lch are the same signal, so there is no problem.

Examples Below, regarding camera-integrated VTRs according to examples of the present invention,
This will be explained with reference to the drawings. Figure 8g1 is the first diagram of the present invention.
1 shows a configuration diagram of an embodiment of the present invention.

In Figure 1, 19 is the RC of Video OUT.
It is A jack. 2o is an output terminal of a DC power source for driving the RF adapter. 21 is an RCA tangent that connects the movie output signal of 1 to the television receiver.

Regarding the camera-integrated VTR configured as described above,
The operation will be explained below with reference to FIGS. 1 and 2.

First, in Fig. 2, 23 printed circuit boards A are provided on one movie main body, and 24 printed circuit boards B are arranged in parallel, and 19 video boards are placed on the 24 printed circuit boards B.
Output RCA jack, 20 (7) RF DO output terminal, 17 Rah output RCA jack, and 18 Lc
An RCA jack for the h output is mounted, and 26 terminals are arranged on the printed circuit board A so as to oppose the 17 RCA jacks, and the Lch output is connected.

2 to 17 RCA jacks as shown in Figure 2 (C).
As can be seen from the cross-sectional view of the 22nd RCA pin inserted on the 1st RCA tangent line, the 22nd RCA pin A is connected to the 17th RC
It connects only to the 26 terminals B in the A jack and functions the same as the conventional one.

Next, as shown in Fig. 2(d), the 27 RCA pin B of the 27 RF adapter is inserted into the 17 RCA jack. 26 terminals A and 26 terminals B
FM Audi connected to and output from terminal A of 26
FM Au output from Lah of o and terminal B of 26
dio's Rah and connect it to the 3rd RF adapter.

Effects of the Invention As described above, according to the present invention, two terminals are provided inside the RCA jack and one on the printed circuit board, and the length of the RCA pin of the RCA adapter is increased, thereby connecting the two terminals inside the RCA jack and the RCA pin. RCA adapter connection detection and FM in a relatively simple way by connecting
Audio Rah output and Lah output can be mixed.

[Brief explanation of drawings]

Fig. 1 is a block diagram of an embodiment of the camera-integrated VTR of the present invention, Fig. 2 is a sectional view of the embodiment of the present invention, Fig. 3 is a block diagram of a conventional example, and Fig. 4 is an FM audio block diagram. be. 1...Movie, 2...RF adapter terminal, 3...RF adapter, 4...
・TV reception L f...RCA jack for Rch output, 18...RCA jack for Lch output, 19...RCA jack for Video output, 2o... RF adapter DC output, 21.
...RCA tangent, 22...RCA pin,
23...Printed board A, 24...Printed board B, 26...Terminal A, 26...
...Terminal B, 27...RCA pin B

Claims (1)

[Claims] A first RCA pin for outputting a signal, a first RCA jack provided on the first printed circuit board, a second RCA jack, and a terminal for outputting a first signal on the first RCA jack, A second RCA jack is provided with a terminal for outputting a second signal, a second printed circuit board parallel to the first printed circuit board is provided with a second terminal for outputting the second signal, and the first printed circuit board is provided with a second terminal for outputting the second signal; When the first RCA pin is connected to the RCA jack, only the first signal is output, and the second RCA pin is connected to the first and second output terminals of the first RCA jack. A camera-integrated VTR characterized in that first and second signals are mixed and output.