JPH0448056Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a video camera, and more particularly, to a video camera having a negative/positive reversal function and a title imprinting function.

Video cameras having a negative/positive reversal processing function for color or black and white images and a title imprinting function are already well known. A conventional color video camera of this type is configured as shown in FIG. If not required, the inversion switch 4 is connected to the non-inversion side contact 4a, so the image signal is directly guided to the RGB signal processing circuit 5 where it is processed as an R (red) signal, a G (green) signal, and a B ( After color separation processing of the blue) signal is performed, the video signal processing circuit 6
For example, a negative color film image 32 shown in FIG. 3A is used as a photographed image, and this is converted into a normal positive image 33 shown in FIG. 3B. If you want to take it out, switch the reversal switch 4 to the reversal contact 4b as shown.
Since the inversion processing circuit 7 is inserted between the mixer 3 and the RGB signal processing circuit 5, the image signal of the negative color film that has passed through the mixer 3 passes through the inversion processing circuit 7 and is inverted from negative to positive. Thereafter, it passes through an RGB signal processing circuit 5 and a video signal processing circuit 6, and is extracted as a video output signal.

By the way, when editing a video recording or the like, there are cases where it is desired to combine a title with a photographed image. In this case, when the title insertion control switch 8 is turned on, the microcomputer 9 operates to generate desired title characters from the character generator 10, and the title characters are converted into color signals by the color signal addition circuit 11. The signal is guided to the mixer 3 and combined with the image signal from the image sensor 2. Therefore, there is no problem when inserting a title into an ordinary photographed image, but if you use the negative image 32 shown in FIG. 3A and want to imprint a title 34 as shown in FIG. , the title characters are generated by a character generator 10, converted into color signals by a color signal adding circuit 11, and then sent to a mixer 3.
When the synthesized image is guided to the negative image 32 and then combined with the negative image 32, the synthesized image is then led to the inversion processing circuit 7 and the image is inverted, so that the color of the title characters is also inverted along with this good image. This has the disadvantage that it results in an unnatural image like the composite image 35 shown in FIG. 5A.

In view of the above points, the purpose of this invention is to use a negative image as a photographed image and, when imprinting a title on it, invert only the negative image and combine the title imprinted onto it without inverting it. The purpose of the present invention is to provide a video camera from which video output can be taken out.

The present invention will be explained below with reference to illustrated embodiments.

FIG. 2 is a block diagram of a video camera showing an embodiment of the present invention. In this video camera, the video signal of the photographed image formed on the image sensor 22 through the photographic lens 21 is sent to the RGB signal processing circuit 2.
After color separation, the inversion processing circuit 24
After that, a composite video signal is generated by a video signal processing circuit 25, and this video signal is further taken out through a mixer 26. The reversal processing circuit 24 does not perform reversal processing on a normal photographed image, but when the photographed image is a negative image, the user switches the reversal switching circuit 27 to perform the reversal processing. Therefore, Figure 3A
After the negative image 32 shown in FIG. (see B), and then passed through a video signal processing circuit 25 and a mixer 26 to be taken out as a video output signal. With this video camera,
Mixer 26 for compositing a title with an image
is provided at a stage subsequent to the inversion processing circuit 24.

Therefore, the title insertion control switch 2
8 is turned on, the microcomputer 29 operates to generate desired title characters from the character generator 30, and the title characters are converted into a color signal by the color signal addition circuit 31 and guided to the mixer 26, where it is sent to the video signal. is synthesized into Therefore, using the negative image 32 as a photographed image,
In the case where the title 34 shown in FIG.
are combined as they are, so the video output signal taken out from the mixer 26 is as shown in FIG.
As shown in FIG. 3, a good composite image 36 is obtained in which the title characters are not reversed.

As described above, according to the present invention, after the inversion processing circuit that inverts the image that passes through the photographic lens, the video output signal for recording is taken out through the mixer that combines the title characters with the image. Therefore, when using negative color film, etc. as a photographed image, you can invert only this negative image and insert title characters in the set color without reversing them, making it easy to create the desired composite image. It can be recorded.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an example of a conventional video camera, FIG. 2 is a block diagram of a video camera showing an embodiment of the present invention, and FIGS. 3A and 3B are examples of negative color film images. Each pattern diagram of a positive image obtained by inverting this, Figure 4, is a pattern diagram of an example of a title to be combined with the image, and Figures 5A and B
These are pattern diagrams of a composite image obtained by a conventional video camera and a composite image obtained by a video camera of the present invention. 1, 21... Photographic lens, 3, 26... Mixer, 7, 24... Inversion processing circuit (image inversion processing means), [8, 28... Title insertion control switch, 9, 29... Microcomputer, 1
0,30...Character generator, 11,3
1...color signal addition circuit] (title character generation means).

Claims (1)

[Claims for Utility Model Registration] A video signal processing circuit 25 that obtains a composite color video signal based on an output signal of an image sensor, and a pattern signal generator that generates a signal corresponding to a pattern such as a character set by a setting section 28. Means 2
9, 30, a color information addition means 31 for adding a signal representing color information to the output of the pattern signal generation means to obtain a color pattern signal, and a composite color video signal output from the video signal processing circuit 25 and the color information. A mixer 26 which combines the color pattern signal outputted from the information addition means 31 to obtain an output video signal; and a mixer 26 which is provided at the front stage of the video signal processing circuit 25 and which controls the output signal of the image sensor as required. A video camera comprising: an inversion processing means 24 for obtaining a color-inverted signal.