JPS63172577A - Video camera - Google Patents

Abstract

PURPOSE:To easily attain superimposition only with a video camera by using a field memory in the video camera. CONSTITUTION:Image pickup devices 2-4, the field memory 8 storing video signals outputted from the image pickup devices 2-4, and a superimposing circuit 5 synthesizing the video signals outputted from the image pickup devices 2-4 and those which the memory 8 has stored are provided. For superimposing the video signals which have previously been stored in the memory 8 provided in the video camera on the video signals by photographing, the video signals showing characters and the like are stored in the memory 8. With only the video camera, the picture on which the characters are superimposed can simply be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a video camera suitable for use with an integrated video tape recorder.

[Summary of the invention]

The present invention provides a video camera suitable for use with an integrated video tape recorder, which includes an imaging device, a memory for storing a video signal output from the imaging device, and a video signal output from the imaging device. By providing a superimpose circuit for synthesizing the video signals stored in the memory, it is possible to easily superimpose characters, etc. on the image being photographed by this video camera.

[Conventional technology]

Conventionally, when performing so-called superimposition in which characters are superimposed on an image being photographed by a video camera, for example, as shown in Japanese Unexamined Patent Publication No. 59-91776, superimposition is performed using a video device provided separately from the video camera. A video signal indicating characters, etc. to be displayed is superimposed on a video signal obtained by shooting in this video camera, and this superimposed video signal is recorded with a video tape recorder, etc. This superimposed character, etc. Examples of the video device that outputs the video signal include a video tape playback device, a personal computer capable of outputting the video signal, or another video camera.

For example, a video signal representing a predetermined character obtained by playing a videotape with a videotape playback device is supplied to a video camera that is shooting, and the video signal obtained by shooting with this video camera is supplied with a video signal that is supplied from the playback device. The signals are superimposed and the superimposed video signal is output from this video camera.

In this way, superimposition is performed during shooting with a video camera.

[Problem that the invention seeks to solve]

However, as mentioned above, superimposing using a video device such as a video tape playback device that is separate from the video camera requires a large number of devices, resulting in a large configuration and cannot be configured at low cost. Ta.

In view of the above, an object of the present invention is to provide a video camera that has a simple configuration and can superimpose characters and the like on an image being photographed.

[Means for solving problems]

For example, as shown in FIG. 1, the video camera of the present invention includes imaging devices (2), (3), and (4),
2).

(3), a memory (8) that stores the video signals output from (4), and a memory (8) that stores the video signals output from the imaging device (21, (3), (41). A superimpose circuit (5) for compositing is provided.

[Effect]

The video camera of the present invention superimposes the video signal stored in advance in the memory (8) of the video camera on the video signal obtained by shooting. Images with superimposed text etc. can be easily obtained using only a video camera.

〔Example〕

Hereinafter, one embodiment of the video camera of the present invention will be described with reference to the accompanying drawings.

The video camera of this example is a so-called camera/video deck integrated video camera in which a video signal recording section, which is a video tape recorder, is integrated, and is constructed as shown in FIG. In this FIG. 1, +1) indicates the entire video camera, and this video camera (1) has an imaging lens (2).
The image light formed on the lens plate (3a) of the COD (3) is converted into an electrical imaging signal by the CCD (3). And this COD (31
The imaging signal obtained by this is supplied to an imaging circuit (4), which converts this imaging signal into a normal composite video signal. In this way, the imaging lens (2),
The CCD 13) and the imaging circuit (4) constitute an imaging section of this video camera +1). And this imaging circuit (
4) is supplied to a video signal recording section (6) via a superimpose circuit (5) to be described later, and this video signal recording section (6) records the video signal on a video tape.

The video camera (1) of this example has an imaging circuit (4)
The video signal outputted by the field memory (8) is supplied to the field memory (8) via the connection switch (7). This field memory (8) is a memory that stores only one field of the supplied video signal.
The video signal stored in 8) is a white extraction circuit (9), a black and white inversion circuit (10), and an impose range specification circuit (11).
and is supplied to the superimpose circuit (5) via the color generation circuit (12).

For this reason, the peak value of the luminance signal of the video signal output by the field memory (8) is detected, the peak value portion corresponding to white is extracted by the white extraction circuit (9), and the extracted white portion and the remaining portion are extracted. The black and white inversion circuit (10) performs inversion processing at a predetermined time. Then, the synchronizing signal part of the video signal outputted by the black and white inverting circuit (10) is extracted by the impose range specifying circuit (11), and the remaining video signal part is supplied to the color generating circuit (12). Color generation circuit (
12) converts the white part into a predetermined color signal and outputs it,
The video signal output from this color generation circuit (12) is supplied to the superimpose circuit (5). In addition to extracting the synchronization signal, the impose range specifying circuit (11) is also capable of extracting a video signal corresponding to a predetermined portion of the screen.

In the superimpose circuit (5), when the video signal is supplied from the field memory (8) in this way, the video signal from the shooting supplied from the imaging circuit (4) is transferred from the field memory (8). The video signal is superimposed and the superimposed video signal is supplied to the video signal recording section (6). Furthermore, when no video signal is supplied from the field memory (8) to the superimpose circuit (8), the video signal from the imaging circuit (4) is supplied as is to the field memory (8). In this way, the video camera (11) of this example is configured.

Next, we will explain the operation when taking pictures with this video camera (11).

First, when performing normal photography of people, etc. with this video camera (1), CO
The image light formed on the phase plate (3a) of D (3) is CG D13) and i@! The circuit (4) generates a video signal, and the video signal recording section (6) records the video signal on a videotape, thereby performing photographing and recording.

When superimposing characters on the video signal recorded in this way, before photographing the above-mentioned person, etc., write the characters in white on a black background or black on a white background on a designated piece of paper, etc. This character is photographed with this video camera (1) as shown in FIG. 2A.

At this time, the connection switch (7) is turned on, the video signal obtained by photographing is supplied to the field memory (8), and the video signal of this character is stored in one field as still image information. In this way field notes January 8)
After storing the video signal in the camera, a photograph of a person or the like is taken, for example, as shown in FIG. 2B. At this time, data is stored from the field memory (8) to the superimpose circuit (5) in synchronization with the supply of video signals obtained by photographing people, etc. from the imaging circuit (4) to the superimpose circuit (5). The video signal of 1 field is continuously supplied, and both video signals are superimposed and supplied to the video signal recording section (6). At this time, the video signal supplied from the field memory (8) to the superimpose circuit (5) is converted into a predetermined character by a white extraction circuit (9), a black and white inversion circuit (10), and an impose range determining circuit (11). Since only this part is extracted from the video signal, this character is superimposed on the screen where a person or the like is being photographed, and a so-called superimposed video signal is recorded, as shown in FIG. 2C. The black and white inversion circuit (lO) performs inversion processing only when characters written in black on a white background are stored in the field memo (January 8). does not perform inversion processing.

Furthermore, when it is desired to color one character to be superimposed, the color generation circuit (12) changes the color signal of the video signal corresponding to this character to a predetermined color signal, thereby making it possible to color the character. Furthermore, when it is desired to superimpose only a part of the characters stored in the field memory (8), this becomes possible by specifying the range of the characters to be superimposed using the imposition range specifying circuit (11).

In this way, by using the field memory (8) according to the video camera (11) according to this example, it is possible to easily perform superimposition using only this video camera (1). Since the characters and the like taken with this video camera (1) are used, any type of characters, designs, etc. can be superimposed.

Note that the field memory (8) is connected to the video signal recording section (6).
), if the video tape deck is equipped with a video tape playback function, and if this video tape deck is equipped with a field memory for variable speed playback, etc., this field memory may be used; By using this, the number of components can be reduced. In the above embodiment, the video camera is an integrated camera/video deck, but the video camera is also equipped with a video signal output terminal instead of the video signal recording section, and is connected to a separate video deck through this output terminal. But of course it's a good thing. Furthermore, it goes without saying that the present invention is not limited to the above-described embodiments, and can take various other configurations without departing from the gist of the present invention.

[Invention @Wolf]

According to the video camera of the present invention, there is an advantage that characters, etc. can be easily superimposed on the image being photographed using only this video camera.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the video camera of the present invention, and FIG. 2 is a diagram for explaining the video camera of the example shown in FIG. (1) is a video camera, (2) is the first image lens, (3)
is CCD. (4) is an imaging circuit, (5) is a superimpose circuit,
(6) is a video signal recording section, and (8) is a field memory.

Claims (1)

[Claims] The present invention is characterized by being provided with an imaging device, a memory that stores a video signal output from the imaging device, and a superimpose circuit that combines the video signal stored in the memory with the video signal output from the imaging device. video camera.