JPS6141052B2 - - Google Patents

Description

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

When recording a camera signal from an imaging device such as a video camera to a magnetic recording/reproducing device (hereinafter abbreviated as VTR), as shown in Fig. 1, the video camera 1
The connection between the camera and the VTR 3 is usually made through the camera connector 5. The VTR 3 has a pause push button switch (hereinafter abbreviated as VTR pause switch) 4 for stopping only the magnetic tape running while recording or playing, but since it is necessary to pause it at the photographer's hand, it is necessary to press the button on the video camera side. Also provided is a pause push button switch (hereinafter abbreviated as camera pose switch for differentiation) 2.

In this way, there are two push button switches with the same function.
Because there are multiple systems, it is confusing and differs slightly depending on the system, but for example, there are operational inconveniences such as the following.

(1) Since the two push button switches are related to each other, if something accidentally touches the VTR pause switch 4 during shooting, it will be removed without the photographer noticing.
The VTR pauses and recording stops.

(2) Even if an external video signal is input to the external signal connector 6, the external signal cannot be recorded unless the camera connector 5 is disconnected from the VTR 3.

(3) The operation of the camera pose switch 2 is the same as that of the VTR pause switch 4, which alternately repeats pause and release, so it is difficult to distinguish whether the VTR 3 is in operation or stopped.

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 an easy-to-operate pause control device for a recording camera that operates as intended even if the photographer operates it unconsciously.

In order to achieve the above-mentioned object, this invention:
A means is adopted to change the functions of the two pause control switches to the optimal function according to the type of recording signal and operation mode. The first switch is enabled only when the switch is in the recording mode, and the second switch is enabled at other times, and the temporary stop state of tape running is canceled only during the period in which the first switch is pressed when the switch is enabled. , the tape is alternately paused and released each time the second switch, which is also in effect, is operated, and the second switch is configured to take a pause release state in its initial state. .

An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is an external view of a recording camera to which a pause control device for a magnetic recording/playback device is applied, which is an embodiment of the present invention, and FIG. 3 is a pause diagram of a magnetic recording/playback device, which is an embodiment of the present invention. FIG. 4, a block diagram showing the circuit configuration of the control device, is a time chart of the signals of each part in FIG. 3.

In Fig. 2, 7 is a recording camera with a video camera built into the VTR, 2 is a camera pause switch installed near the grip 8, 4 is a VTR pause switch, and 6 is an external signal connector (whether the recording signal is used as a camera signal or not). In Fig. 3, 2 is a camera pose switch, 4 is a VTR pose switch,
12 is a T flip-flop, 13 is an AND gate, 14 is an inverter, 15 is an OR gate, +B
is the power source.

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

By first turning on the power to the circuit,
An initialization signal R is applied to the reset terminal of the T flip-flop 12 to reset the T flip-flop and initialize the Q output to a high level "H".

Camera mode signal d, which is a control signal that instructs whether the recording signal is a camera signal or an external signal.
The recording and playback mode signal c (which becomes "H" when the camera signal is used) is the recording and playback mode signal c (which becomes "H" during recording mode and is low level "L" during other modes such as playback mode).
) is input to the AND gate 13,
A camera pose selection signal f is formed.

Therefore, when the camera pose selection signal f is "H", the camera pose switch 2 is selected, and the camera pose signal a directly becomes the pose output signal g via the AND gate 13 and the OR gate 15.
VTR pause switch 4 is prohibited. In this invention, since the camera pose switch 2 and the VTR pose switch 4 can be completely separated, the camera pose switch 2 performs an operation suitable for the imaging device, that is, records are recorded only during the period in which it is pressed (the period when the signal a is "H"). The pause output signal g becomes "H"). Here, it is determined that the tape drive circuit is controlled so that the pause output signal g causes the tape to run when it is "H" and to temporarily stop when it is "L".

In contrast, the camera pose selection signal f is “L”
That is, in the case of playback or external signal recording mode (camera mode signal d is set to "L" from the outside via the external signal connector), the VTR pause switch 4 is selected and the T flip-flop 12, AND gate 13, and OR gate 15 are activated. Via
VTR pause switch signal b is pause output signal g
Changes to And camera pose switch 2 is prohibited. When the camera pose selection signal f is “L”, since a T flip-flop is used,
Each time the VTR pause switch 4 is pressed, it alternately pauses and releases at the rising edge of the VTR pause switch signal b, which is the same as the pause operation of a normal VTR, so there is no confusion.

Although an embodiment using a discrete circuit has been described above, the present invention can be similarly realized using a microcomputer 20 as shown in FIG.
Each signal name in FIG. 5 is the same as in FIG. 4. Of course, the microcomputer in this case can also be used for system control of the VTR.

As described above, according to the present invention, the functions of the two pause push button switches can be changed to the optimal state depending on the type of recording signal and operation mode, which is particularly noticeable in the case of a recording camera. It is possible to solve the operational problems that appear in the above, and to realize a suspension control device that is simple and easy to use.

[Brief explanation of the drawing]

Fig. 1 is an explanatory external view of a conventional pause control device in a magnetic recording/playback device, Fig. 2 is an external view of a recording camera to which the present invention is applied, and Fig. 3 is an embodiment of the magnetic recording/playback device of the present invention. A block diagram showing the configuration of the temporary stop control device of the device, FIG.
FIG. 5 is a block diagram showing another embodiment of the present invention. Code explanation, 7...Recording camera, 2...Camera pause switch, 4...VTR pause switch, 1
2...T flip-flop, 13...AND gate, 14...Inverter, 15...OR gate,
20...Microcomputer.

Claims (1)

[Claims] 1. A pause control device for a magnetic recording/playback device incorporating an imaging device, which includes two switches, a first and a second switch, for controlling running and pausing of a magnetic tape, and opening/closing of the two switches. and a control means for controlling running and pausing of the magnetic tape according to the state, the type of the recording signal from the source, and the operation mode of the magnetic recording and reproducing device,
The control means only when the signal to be recorded is the built-in imaging signal and the operation mode is the recording mode.
The first switch is enabled, the second switch is enabled at other times, and the first switch is enabled when the switch is enabled.
The temporary stop state of the tape is canceled only during the period when the switch is pressed, and each time the second switch, which is also in effect, is operated, the tape is paused and canceled alternately. 1. A pause control device for a magnetic recording/playback device, characterized in that it is configured to take a pause release state in an initial state.