JPH048991B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic recording and reproducing device incorporating an imaging device.

Conventionally, when recording a camera signal from an imaging device such as a video camera to a magnetic recording and reproducing device (hereinafter abbreviated as VTR), first connect the video camera 1 and VTR 3 with a connection cable 8 as shown in Figure 1.
Press the record button switch 5 on the VTR 1 (some VTRs have both the record button switch 5 and the playback button switch 6 pressed), then press the camera pause button switch 2 on the camera 1 side or the VTR pause button switch 2 on the VTR side. The unnecessary scene was captured and cut by operation 4. Note that 7 is a stop button switch.

Therefore, it is not possible to start or pause recording using only the camera pause button switch, which is disadvantageous in that it is easy to operate erroneously, especially when there is an urgent need to take a picture. Also, since the two pause button switches mentioned above are related to each other, you may accidentally press the VCR while shooting.
There was also the inconvenience that if something touched and operated the pause button switch 4, the VTR 3 would pause and recording would stop without the photographer noticing.

The above-mentioned disadvantages are particularly noticeable in the case of VTRs (hereinafter abbreviated as recording cameras) equipped with a built-in video camera, which are expected to be put into practical use in the future.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art and to provide a magnetic recording and reproducing apparatus incorporating a video camera that is easy to operate and operates as intended even when operated unconsciously by the photographer.

In order to achieve the above object, the present invention eliminates the conventionally separate push button switches for recording start and pause control when recording with the built-in camera, and uses a new single push button switch that includes both functions. adopted a method of using

An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is an outline diagram of a magnetic recording/reproducing apparatus according to an embodiment of the present invention, FIG. It is a time chart of each part signal in a figure.

In FIG. 2, numeral 9 denotes a recording camera with a built-in video camera in a VTR, and numeral 10 denotes a non-lock type push button switch (abbreviated as a shooting button switch) newly installed near the grip 11 according to the present invention. 2 is a magnetic tape loading completion detection switch; 23 is a recording inhibit detection switch; 24 is a gate; 25 is a differential circuit for detecting the rising edge of a signal; 26 is a reset flip-flop;
7 and 28 are inverters, respectively, and +B is a power supply for applying logic level "H" (high) to the circuit.

Next, the operation of the circuit shown in FIG. 3 will be explained using the time chart shown in FIG.

First, when the photographing button switch 10 is not pressed, the photographing signal a is "L" (low). When the user wants to start shooting, all he has to do is press the shooting button switch 10. When the photographing signal a becomes "H", as shown in FIG. 4, when the magnetic tape is not loaded (loading completion signal b is "L"), the differentiating circuit 25 is activated unless the camera mode is in the recording prohibited state. A pulse shown as an output signal g is obtained at the output of . The reset flip-flop 26 is set by the output signal g, and loading is continued by setting the loading command signal h to "H" until loading is completed.
Since the differential circuit 25 is used, the loading operation can be continued even if the photographing button switch 10 is released and the photographing signal a is set to "L" as shown in FIG. 4 during loading.

When loading is completed and the loading completion test switch 22 is closed and the loading completion signal b becomes "H", the reset flip-flop 26 is reset, so the loading command signal h becomes "L" and the loading operation is completed. do. If the shooting button switch 10 is pressed after this,
The recording signal e that controls the VTR becomes "H" and recording starts, but if it is not pressed as shown in Fig. 4, the recording signal e is "L" and recording is not performed.
At the same time, the pause signal f for controlling the VTR becomes "H" through the inverter 27, resulting in a temporary stop state. In addition, the block diagram of the unloading section is omitted in FIG.

Next, if you want to cancel the temporary stop and resume recording,
If you press the shooting button switch 10, during the pressing period,
Recording is performed with the recording signal e at "H" and the pause signal f at "L". If it is desired to fix the pressed state, the photographing button switch 10 may be provided with a mechanical locking mechanism.

In addition, a signal obtained by inverting the photographing prohibition signal d by the inverter 28 and a camera mode signal c (a signal indicating the mode for recording the built-in camera signal;
In the case of external signal recording mode or playback mode in the VTR unit, it is “L”) and “H” in both cases.
Since the configuration is such that the photographing signal a is enabled using the gate 24 only when the camera mode signal c becomes "L" as shown in FIG. 4, for example, the photographing button switch 10 will not be accepted.

Although an embodiment using a discrete circuit has been described above, the present invention can be similarly realized using a microcomputer 30 as shown in FIG. Fifth
The names of each signal in the figure are the same as in FIG. 4. Of course, the microcomputer 30 in this case can also be used for system control of the VTR.

As described above, according to the present invention, it is possible to control the start and pause of recording with only one shooting button switch, so it is possible to solve the operational inconvenience that is particularly noticeable in the case of recording cameras, and to reduce confusion. A magnetic recording/playback device with a built-in video camera that is easy to use and easy to use can be realized.

[Brief explanation of drawings]

Fig. 1 is an outline diagram illustrating a combination of a conventional video camera and a VTR, Fig. 2 is an outline diagram of a recording camera to which the present invention is applied, and Fig. 3 is an outline diagram of a magnetic recording/playback device according to an embodiment of the invention. FIG. 4 is a time chart showing waveforms of various signals in FIG. 3, and FIG. 5 is a block diagram showing another embodiment of the present invention. Description of symbols, 9... Recording camera, 10... Shooting button switch, 22... Loading completion detection switch, 24
...gate, 25...differentiation circuit, 26...set reset flip-flop, 27, 28...inverter,
30...Microcomputer.

Claims (1)

[Scope of Claims] 1. A portable magnetic recording and reproducing device having a built-in imaging device, comprising a first means comprising at least one non-locking photographing operation means, and a first means that operates upon detecting completion of loading of a magnetic recording medium. a second means; a third means for enabling loading of the magnetic recording medium until the second means is activated by the operational output of the first means; and recording only during the operation period of the first means. a fifth means that operates upon detecting a recording prohibited state; and a means for invalidating the operational output of the first means by the operational output of the fifth means. A magnetic recording/playback device comprising: 2. In the magnetic recording and reproducing device according to claim 1, when the magnetic recording and reproducing device is in an operation mode other than a mode for recording signals from the built-in imaging device, means for disabling the operation by the first means is provided. Equipped with a magnetic recording and playback device.