JPH0549037A - Picture synthesizer and picture reproducing device - Google Patents

Abstract

PURPOSE:To realize recording and reproduction with only one VTR and to facilitate preparation of the VTR by synthesizing three monochromatic television pictures as one color television picture. CONSTITUTION:Three monochroic input television picture data to be recorded are stored sequentially in picture memories 5 in a picture synthesizer 3. Then the picture data from the three picture memories 5 are read in a same timing by a read control signal from a synthesis timing control circuit 7 and synthesized with a television synchronizing signal and the result is outputted as a color composite video signal. The color television picture signal C reproduced by a VTR is inputted, a separator circuit separates the signal C into red, green and blue color signals and fed to the picture memories 5, in which they are stored. The picture data stored in the picture memories 5 are read by a read control signal and synthesized with a television synchronizing signal at a decoding circuit 8 and the result is reproduced as a monochroic composite video signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for simultaneously recording and reproducing three monochrome television images.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional structure for recording and reproducing a plurality of monochrome or color television images. In the figure, 1 is a VTR (Video Tape Record) for recording and reproducing a television image.
r) and 2 are control devices for controlling the start and stop of recording and reproduction of the plurality of VTRs 1 in order to match the times between the plurality of television images, a1, a2 and an are television image signals to be recorded, and b1 and b2. And bn are reproduced television image signals.

As shown in FIG. 4, conventionally, when recording a plurality of television images, the same number of VTRs 1 as the television images to be recorded are prepared, and the plurality of television images are recorded at the same time. For this purpose, a control device 2 for controlling a plurality of VTRs 1 to start recording at the same time is prepared. When playing back a television image recorded in this way, a plurality of VTRs 1 are used as in the case of recording.
Is prepared, and the control device 2 for controlling the reproduction so as to match the time between a plurality of television images is prepared.

[0004]

As described above, in the conventional method of recording and reproducing a plurality of television images, it is necessary to prepare the same number of VTRs as the television images to be recorded. As the number of television images to be played increases, the number of VTRs also needs to be increased, which is a problem.

There is also a problem that it is not easy to prepare and move the VTR when the place where the television image is recorded and the place where the television image is reproduced are far apart.

The present invention has been made to solve the above problems, and in particular, by using a means for synthesizing three monochrome television images as one color television image signal, It is an object of the present invention to provide a device capable of recording and reproducing with a VTR.

[0007]

An image synthesizing apparatus and an image reproducing apparatus according to the present invention each store three monochrome television images to be recorded and reproduced in an image memory once and read them again at the timing of synthesizing. hand,
Color signals R (red) and G for color television image signals
The above problem is solved by using a means for synthesizing three monochrome television images corresponding to (green) and B (blue), respectively, and producing one color television image signal.

[0008]

Using the image synthesizing device and the image reproducing device according to the present invention, three monochrome television images are synthesized as one color television image signal.

[0009]

EXAMPLES Example 1. FIG. 1 shows a configuration for recording and reproducing three monochrome television images according to the present invention. In the figure, 1, 1a, a2, a3, b1, b2 and b3 are the same as those in FIG. 4, 3 is an image synthesizing device according to the present invention, and 4 is an image reproducing device according to the present invention.

FIG. 2 is a block diagram of an image synthesizing device 3 showing an embodiment of the present invention. In the figure, 3, a1, a2 and a3 are the same as those in FIG. 1, 5 is an image memory for storing image data of monochrome television images, and 6 is a control signal for storing the image data in the image memory 5. A writing control circuit 7 for generating a composite timing control circuit 7 for generating a read control signal for reading the image data and a television synchronizing signal for the purpose of combining the image data stored in the respective image memories 5 into one signal. , 8 correspond the image data read from the respective image memories 5 to R (red), G (green) and B (blue) of the color signals respectively, and further combine them with the television synchronizing signal to produce a color composite video signal. , C is a color television image signal when three monochrome television images are combined.

Image composition for recording three types of monochrome television images on the VTR 1 will be described. In the image synthesizing device 3 configured as shown in FIG. 2, the image data of each of the three monochrome input television images to be recorded is sequentially written and stored in the image memory 5. Then, in accordance with the read control signal from the composition timing control circuit 7, the image data is read from the three image memories 5 at the same timing, combined with the television synchronization signal from the composition timing control circuit 7, and output as a color composite video signal. . The color television image signal c synthesized by the image synthesizer 3 as described above is recorded by the VTR 1 as shown in FIG.

FIG. 3 is a block diagram of an image reproducing apparatus 4 showing an embodiment of the present invention. In the figure, 4, b1, b2
And b3 are the same as FIG. 1 and 5, 8 and c are the same as FIG.
Reference numeral 9 is an R color signal which is an input color composite video signal.
A separation circuit 10 for separating (red), G (green), and B (blue) and SYNC (synchronization signal) is a writing control signal for storing image data in each of the image memories 5 and each monochrome signal. It is a reproduction timing control circuit that generates a read control signal for reproducing a television image.

Image reproduction will be described in which the three combined monochrome television images recorded by the VTR 1 are reproduced and restored to the original three monochrome television images. Figure 3 above
The image reproducing apparatus 4 configured as described above inputs the color television image signal c reproduced by the VTR 1 as shown in FIG. 1, and the separating circuit separates the color signals R (red) and G.
(Green) and B (blue) are separated and sent to the image memory 5 for storage. The image data stored in each of the image memories 5 is read by a read control signal, is combined with the television synchronizing signal by the composite circuit 8, and is reproduced as a monochrome composite video signal.

The monochrome TV image synthesized by the image synthesizer 3 as described above is recorded by the VTR 1 of the recording / reproducing apparatus.
And is reproduced by the image reproducing device 4 into a monochrome television image before being combined.

[0015]

As described above, according to the present invention, since three monochrome television images are combined into one color television image, recording and reproduction can be realized with only one VTR, and preparation for VTR is possible. Will be easier.

Further, even if the place where the television image is recorded and the place where the television image is reproduced are distant from each other, it is sufficient to prepare one VTR, so that the movement can be performed easily.

[Brief description of drawings]

FIG. 1 is a configuration diagram for recording and reproducing three monochrome television images according to the present invention.

FIG. 2 is a block diagram of an image synthesizing apparatus showing an embodiment of the present invention.

FIG. 3 is a configuration diagram of an image reproducing apparatus showing an embodiment of the present invention.

FIG. 4 is a configuration diagram when recording and reproducing a plurality of conventional television images.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 VTR 2 control device 3 image composition device 4 image reproduction device 5 image memory 6 writing control circuit 7 composition timing control circuit 8 composite circuit 9 separation circuit 10 reproduction timing control circuit

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location H04N 9/79 Z 9185-5C

Claims (2)

[Claims] 1. An image synthesizing apparatus for simultaneously recording three monochrome television images, the image memory storing image data of three input monochrome television images, and the image data to the respective image memories. A write control circuit that generates a control signal for storing the image data stored in each of the image memories
A combination timing control circuit for generating a read control signal for reading out image data and a television synchronizing signal for the purpose of combining the signals into one signal, and the image data read out from the respective image memories for color signals R (red), G ( Green) and B (blue)
Corresponding to each, and further combined with the TV sync signal,
An image synthesizing device comprising: a composite circuit for outputting as a color composite video signal. 2. An image reproducing apparatus for reproducing three monochrome television images synthesized by an image synthesizing apparatus into respective monochrome television images before synthesis, wherein an input color composite video signal is converted into a color signal R (Red), G
Separation circuit for separating (green), B (blue), and SYNC (synchronization signal), an image memory for storing image data of each monochrome television image separated by the separation circuit, and each of the image memories A reproduction timing control circuit for generating a write control signal for storing image data, a read control signal for reproducing each monochrome TV image, and a television sync signal, and a composite of the image data and the television sync signal for monochrome. And a composite circuit for outputting the composite video signal as a composite video signal.