JPH034157B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a video camera system, and more particularly to a video camera system for making splicing beautiful.

A video camera system records image signals captured by a television camera on a video tape recorder. In this case, the most important thing is to create a beautiful transition when starting recording after stopping the recording operation. As a method for this splicing, a method using a pause motion, a method of returning to the previous recording point and starting, etc. are used.

However, when using the pause motion, the joints are extremely beautiful, but since the head drum continues to rotate while in contact with the tape, it is necessary to keep it in this state for a long time to protect the tape head. I can't continue. Furthermore, if recording is started after the tape has been rewound, the last portion of the previously recorded image will be erased, and the spliced portion will contain noise, making it difficult to view. Furthermore, if splicing is frequently performed, that is, if one landscape changes to another in a short period of time, the actual temporal transition will not be felt, resulting in an image that does not have a lasting impression. Particularly in recent years, video camera systems have become capable of recording over a long period of time, making it possible to record multiple items.

An object of the present invention is to provide a video camera system that allows beautiful stitching and allows the temporal transition of the stitched portions to be strongly felt.

In order to achieve this purpose, this invention
When recording is turned off, recording is stopped after a certain period of time has passed and the color has shifted to a specified color or pattern.

Hereinafter, a video camera system according to the present invention will be explained in detail using the drawings.

FIG. 1 is a circuit diagram showing an embodiment of a video camera system according to the present invention. In the same figure, reference numeral 1 is an objective lens, which is used for object images R, G, B.
An image is formed on a face plate on which a large number of sensors 2a, 2b, 2c in charge of (Red, Green, Blue) are arranged. Reference numerals 3a to 3c are amplifiers that amplify the output signals of the sensors 2a to 2c, respectively; 4a to 4c are electronic volumes that vary the output signal levels of the respective amplifiers 3a to 3c, and are controlled by the microcomputer 5. 6 is each electronic volume 4a to 4c
7 is a modulator that modulates by adding the output signal of the adder 6 and the output signal of the oscillator 8, and the output signal is sent through an output terminal 9 (not shown). Supplied to a video tape recorder.

In the video camera system configured as described above, since the recording off signal A is at "H" (High Level) during recording, the microcomputer 5 controls the electronic volumes 4a to 4c.
is controlled to normal shooting mode. In this state, when an object is imaged on the face plate by the lens 1, each of the sensors 2a to 2c generates an output signal of a level corresponding to the brightness of each color. Then, each of these output signals is transmitted to the amplifiers 3a to 3.
After being amplified in c, the electronic volume 4a
.about.4c to the adder 6 for addition. The output signal of the adder 6 is modulated by being mixed with the output signal of the oscillator 8 in a modulator 7 and then supplied to the video tape.

Next, when recording is turned off, the recording off signal A is inverted from "H" to "L" (Low Level), so the microcomputer 5 detects this inversion of the recording off signal and identifies recording off. do. When recording is turned off, the microcomputer 5 controls the electronic volumes 4a to 4c to
By controlling the output signal to have a predetermined constant value as shown in FIGS. 2A to 2C, the image is gradually converted into a constant color, such as blue, for example. Please note that this color can be specified using the electronic volume 4a.
By changing the three primary colors in steps 4c to 4c, a desired color can be set.

Therefore, in the video camera system configured in this manner, each time the image is turned off, the image is gradually changed to a specified color, and the image is stopped after being recorded. For this reason, an image that gradually changes from the shooting screen to the specified color is interposed in the spliced portion, and even if you rewind at the time of splicing, part of the screen of this specified color will be erased. This does not pose any problem.

In the above embodiment, a case has been described in which the image is changed to a specified color, but the image may be changed into a mosaic shape, a fan shape, or a frame shape, as shown in FIG. 3, for example.

Flowcharts of the operations at the start and stop of recording in this case are shown in FIGS. 4 and 5. In FIG. 4, when recording is started, the video tape recorder performs rewinding to the previous recording end point. Next, at the same time as recording starts, the video pattern and the camera image are combined and output, so that this combined image is recorded on the video tape recorder. Next, when recording is turned off, an image pattern is generated and composited with the camera image, and after this composite image is recorded, recording is stopped.

Note that it can be applied not only to VTR camera systems but also to laser disc camera systems equipped with a camera with a fader function.

As explained above, according to the video camera system according to the present invention, a screen or a specific video pattern whose color tone gradually changes is interposed in the joint portion, and as a result, the noise line in the joint portion becomes conspicuous. It disappears. Furthermore, since a screen or image of a specific color is interposed in the connecting portion, it has various excellent effects such as being able to give a sense of temporal transition.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing one embodiment of a video camera system according to the present invention, FIG. 2 is an operation waveform diagram of the circuit shown in FIG. 1, and FIG. 3 is a diagram showing an example of a screen change showing another embodiment. , FIG. 4, and FIG. 5 are flowcharts showing operations at the time of starting and stopping recording. 1...Lens, 2a-2c...Sensor, 3a-3c
...Amplifier, 4a to 4c...Electronic volume, 5...Microcomputer, 6...Adder, 7...Modulator,
8...Oscillator.

Claims (1)

[Claims] 1 In a video camera system, when recording is stopped, the imaging signal is gradually shifted to another color or pattern, and a composite video signal of images that takes a predetermined time is recorded, and then stopped, so that a screen or image of a specific color is created in the spliced part. A video camera system characterized by adding a control circuit that automatically intervenes.