JPH04368079A - Picture insert system to recorded still video medium - Google Patents

Abstract

PURPOSE:To replace a picture recorded area with a character area or other picture of nature by selecting optionally part of a recording area of a recorded video floppy and devising the system to rewrite the area directly. CONSTITUTION:A recording reproduction delete circuit 8 reads a picture from a video floppy 5 and the user decides a position to which a character area is to be inserted by a character insert circuit 12 on a screen of a monitor 14. The number of horizontal synchronizing signals up to the position is counted, the recording on the video floppy 5 is deleted based on the count and the character area is recorded to the deleted area.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image insertion method for recording a character area or a natural image (such as an image photographed by an imaging system) in a part of the recording area of a recording medium on which still images are recorded.

0002

[Background Art] Characters and symbols (hereinafter referred to as "characters, etc.") are displayed on an image.
The following method is generally used when viewing a still image by inserting a FIG. 6 is a diagram showing an example of a system for inserting characters and the like into a still video signal and reproducing the resulting image. A still video signal is played back by a playback device 20, and characters, etc. are inserted into the playback screen by a character synthesis device 21. The image with the characters inserted therein is sent to a still video recorder 22 and dubbed onto a video floppy 23. Then, once again, the image with the combined characters is sent to the playback device 24.
is played back and displayed on the monitor 25.

0003

[Problems to be Solved by the Invention] After checking the character composition screen created as described above on the monitor 25, there may be cases where a user wishes to make corrections to the inserted characters. In such case,
In conventional systems, once characters, etc. are synthesized on the screen, it is not possible to directly rewrite the character composite portion of the recorded portion on the recording medium to correct the characters, or to replace the entire characters, etc. Furthermore, since the system shown in FIG. 6 performs synthesis during playback by inserting characters, etc. into the image played back by the playback device 20 by the character synthesis device 21, if this is not dubbed by the recorder 22, similar images In order to obtain this, we had to repeat the synthesis process. An object of the present invention is to solve the above-mentioned problem, and by making it possible to arbitrarily select a part of the recording area of a recorded video floppy and directly rewrite it, it is possible to write text areas or other natural images on the image recording area. An object of the present invention is to provide a method for inserting images into a recorded still video medium that allows replacement.

0004

[Means for Solving the Problems] In order to achieve the above object, a method for inserting an image into a recorded still video medium according to the present invention includes a reproduction processing circuit that reads and reproduces an image from a still video recording medium, and a reproduction processing circuit that reads and reproduces an image from the still video recording medium. Another image insertion position determining means for determining an arbitrary position in the vertical direction in the reproduced screen, and counting and storing the number of horizontal synchronization signals from the vertical synchronization signal to the horizontal synchronization signal at the determined position in the reproduced screen. a count storage means for erasing an image portion of the recording medium after the stored count number of the horizontal synchronization signal; and a recording means for recording the other image on the erased portion of the recording medium. It is configured.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained in more detail below with reference to the drawings and the like. FIG. 1 is a diagram showing the structure of a track when character areas in the recording area of a recorded video floppy are replaced by the image insertion method according to the present invention. Recording is started from the vertical synchronizing signal 5c, and one screen is recorded on the track as the video floppy 5 rotates once in the direction of the arrow. Usually everything is an image part. but,
In the present invention, the timing for inserting another image, such as a text area, is created by specifying the position of the screen to be replaced and counting the number of horizontal synchronization signals in that part from the vertical synchronization signal. . In the figure, solid line portions drawn at regular intervals on the track are horizontal synchronizing signals 5d. An image portion 5a is recorded in a track corresponding to the upper part of the screen, and a character area 5b is recorded in a track corresponding to the lower part of the screen.

FIG. 2 is a diagram showing an example of an image in which character areas are recorded on tracks in this manner. FIG. 3 is a circuit block diagram showing an embodiment of a method for inserting an image into a recorded still video medium according to the present invention. The CPU 1 activates the servo circuit 2 and causes the drive circuit 3 to drive the motor 4 to rotate the video floppy 5 at a predetermined speed and phase. It also controls the head drive circuit 10 to position the video head 7 on a predetermined track. The PG sensor 6 is a detector for detecting the rotational speed of the video floppy.

When recording an image, the recording/reproducing/erasing circuit 8 converts the video signal into a recording signal format (FM modulated wave) and records it on the video floppy 5. During playback, the FM modulated video signal is read out and demodulated. Furthermore, if erasing is instructed, the designated track is erased. The erasing means is comprised of the erasing function of the recording/reproduction/erasing circuit 8 and the control function of the CPU 1. The reproduction processing circuit 11 reproduces the demodulated wave and sends a video signal consisting of a predetermined color signal and a luminance signal to the first input terminal of the switch 13, and also separates the synchronization signal and sends it to the CPU 1, the servo circuit 2, and character insertion. circuit 12
supply to. The character insertion circuit 12 is a circuit for inserting a character area into a part of the screen. This character insertion circuit 1
2 is provided with a position adjustment volume 12a for selecting an arbitrary position on the screen and inserting a character area, and a color adjustment volume 12b for selecting the color of the character area. The other image insertion position determination means is realized by the function of the character insertion circuit 12, the position adjustment volume 12a, and a switch 13, which will be described later. A keyboard 15 is connected to the CPU 1, and characters, symbols, etc. to be inserted into the character area created by the character insertion circuit 12 are input using the keyboard 15. The character area created by the character insertion circuit 12 is sent to the second input of the switch 13. The switch 13 is supplied with a switching signal from the character insertion circuit 12 (a waveform that changes according to the amount of adjustment when the character area insertion position is adjusted using the position adjustment volume 12a), and the image and characters from the reproduction processing circuit 11 are supplied to the switch 13. The area is switched and output to the video terminal. The recording means is composed of a character insertion circuit 12, a recording function of a recording/reproducing/erasing circuit 8, a video head 7, and the like.

Next, a case will be described in which a character area is replaced and recorded at a position where characters of an image recorded on a track of a video floppy are inserted. When the playback button 15a on the keyboard 15 is pressed, an image is read from the designated track of the video floppy 6 by the recording/playback erasing circuit 8, and after being created into a predetermined video signal by the playback processing circuit 11, the first button of the switch 13 is pressed. Sent to the input end. On the other hand, the character area signal of the character insertion circuit 12 is
3 to the second input. At the same time, a switching signal is supplied to the switch 13, and the image from the reproduction processing circuit 11 and the character area from the character insertion circuit 12 are switched.
4 is played. An image with a character area inserted at the bottom is displayed on the screen of the monitor 14. At this time, the character insertion part that was originally inserted on the screen and the character insertion circuit 12
There is no need to adjust the position of the character area if the character area from ), you must adjust the position where the character area is inserted. In such a case, by operating the position adjustment volume 12a of the character insertion circuit 12, the switching signal can be changed to change the insertion position of the character area on the screen so that they match. After determining the character area insertion position, an arbitrary character is input using the keyboard 15, and the character is inserted at a predetermined position in the character area. The characters inserted into the character area can be simultaneously confirmed in the character area on the playback screen by the function of the character insertion circuit.

Next, press the memory button 15 on the keyboard 15.
When b is pressed, the CPU 1 counts the number of horizontal synchronization signals from the vertical synchronization signal to the rising point of the switching signal sent from the character insertion circuit 12 (the switching position to the character area), and stores the counting results in the built-in memory. to be memorized. Then, when you press the character insert button 15c on the keyboard 15, CP
U1 reads the counted value of the horizontal synchronizing signal from the built-in memory, starts counting the horizontal synchronizing signal from the vertical synchronizing signal of the screen being played, compares the counted value with the value read from the built-in memory, and finds a match. At that point, the recording/reproducing/erasing circuit 8
Switch from playback to erase operation. As a result, the recording of the video floppy track corresponding to the position where the character area insertion is determined is erased. When the video floppy rotates once and reaches the vertical synchronization signal recording area, the recording/reproducing/erasing circuit 8 is switched to playback operation, and the count value is counted from the horizontal synchronization signal and vertical synchronization signal recorded in the built-in memory in the same way as above. When the number of horizontal synchronization signals and the number of horizontal synchronization signals match, the recording/reproducing/erasing circuit 8 is switched to the recording operation, and the character area of the character insertion circuit 12 is recorded. As described above, it is possible to replace any part of the recorded track of the video floppy with the character area. Although some noise occurs at the transition between the image area and the text area, since it is the boundary between the text areas, it is not particularly unsightly and does not cause any problems.

FIG. 4 is a circuit block diagram showing a second embodiment of the present invention. In this embodiment, an externally input image is inserted at the bottom of the reproduced image. FIG. 5 shows an example in which a reproduced image of an airplane is combined with an externally input image of another airplane. In FIG. 4, the configurations of a servo circuit 2, a drive circuit 3, a motor 4, a head drive circuit 10, a pickup sensor 6, a recording/reproduction erasing circuit 8, a reproduction signal processing circuit 11, and a keyboard 15 are the same as those of the respective circuits in FIG. Switches 16 and 17 are inserted between the recording/reproducing/erasing circuit 8 and the reproduction processing circuit 11 and between the reproduction processing circuit 11 and the video output terminal, respectively. Each switch 16 and 17
is switched by a switching signal sent from the CPU 21. The timing at which the switches 16 and 17 are switched, that is, the screen position at which the external input image is inserted, can be arbitrarily selected by key operations on the keyboard 15. In addition to this embodiment, the image insertion position determining means is the keyboard 15.
, the CPU 21 and the switch 17. A delay circuit 19 is connected to the video input terminal to which an external image is input, and the output of the delay circuit 19 is connected to the second input terminal of the switch 17 and the input of the recording signal processing circuit 18. The output of the recording signal processing circuit 18 is connected to the second input terminal of the switch 16. The volume VR connected to the delay circuit 19 changes the amount of delay of the delay circuit 19, thereby making it possible to adjust the insertion portion of the externally input image.

Next, a case will be described in which the lower part of an image recorded on a track of a video floppy is replaced with an externally input image. When the playback button 15a on the keyboard 15 is pressed, an image is read from a predetermined track of the video floppy 6 by the recording/reproducing/erasing circuit 8 and is input to the playback processing circuit 11 through the switch 16. The video signal that has undergone predetermined processing in the reproduction processing circuit 11 is sent to the switch 17. On the other hand, the external image input to the video input terminal is delayed by the delay circuit 19 and sent to the second input terminal of the switch 17. At the same time, switching signals are supplied to switches 16 and 17, and the image from the reproduction processing circuit 11 and the external image from the delay circuit 12 are switched and reproduced on a monitor (not shown). Then, by operating the keyboard 15, the insertion position of the external input image on the screen is arbitrarily selected. After determining the insertion position of the image, the insertion image portion of the external input image is selected by adjusting the volume VR. In the example of the externally input image of an airplane in FIG. 5, the volume VR is adjusted so that the airplane portion is included in the inserted portion on the screen.

After making the adjustments as described above, when the memory button 15b on the keyboard 15 is pressed and the character insert button 15c is further pressed, the same operation as in the case of FIG. 3 is performed. That is, after the counted value of the horizontal synchronizing signal is stored in the memory built into the CPU 21, the recording/reproducing/erasing circuit 8 switches to recording operation. As a result, the external input image outputted from the delay circuit 19 and processed into a predetermined image by the recording signal processing circuit 18 is recorded at the selected position on the screen. At this time, a single color area of chromatic color or achromatic color is inserted in the image switching part to make the unsightly appearance caused by noise in the switching part less noticeable.

[0013]

[Effects of the Invention] As explained above, the image insertion method according to the present invention reads an image from a still video recording medium, reproduces it on the screen, determines the position on the reproduced screen at which another image is to be inserted, and The horizontal synchronizing signal up to the position is counted, the circuit is switched to the erasing function based on the count value, the recording in the determined range is erased, and then another image is recorded in the erased area. Therefore, it is possible to replace the character insertion portion of an image having a character insertion portion inserted by dubbing or the like on a recorded still video medium with another image, for example, another character area. In the conventional system, the character area portion was inserted by once reproducing the image and dubbing it to another recorder, resulting in image deterioration, but according to the present invention, image deterioration does not occur. In addition, since other screens are replaced on the recording medium using the method of the present invention, if you want to view the image with the other screens replaced later, you do not need to use a special player, such as a player with a character synthesis device, as usual. You can view images with other screens replaced on a playback device.

[Brief explanation of drawings]

FIG. 1 is a diagram showing the structure of a track when character areas in a recording area of a recorded video floppy are replaced by an image insertion method according to the present invention.

FIG. 2 is a diagram showing an example of an image in which character areas have been replaced.

FIG. 3 is a circuit block diagram showing an embodiment of the image insertion method according to the present invention.

FIG. 4 is a circuit block diagram showing a second embodiment of the present invention.

FIG. 5 is a diagram showing a specific example of a composite image of a reproduced image and an external input image.

FIG. 6 is a diagram showing an example of a system that inserts characters and the like into a still video signal and reproduces the image.

[Explanation of symbols]

1, 21...CPU 2...Servo circuit 3...Drive circuit 4...Motor 5...Video floppy 6...PG sensor 7...Video head 8...Recording/reproducing/erasing circuit 11...Reproduction processing circuit 12...Character insertion circuit 13, 16, 17...switch 14...Monitor 15...Keyboard 18... Recording signal processing circuit 19...Delay circuit

Claims (2)

[Claims] 1. A reproduction processing circuit that reads and reproduces an image from a still video recording medium, another image insertion position determining means that determines an arbitrary position in the vertical direction in the screen reproduced by the reproduction processing circuit, and vertical synchronization. count number storage means for counting and storing the number of horizontal synchronization signals from the signal to the horizontal synchronization signal at the determined position in the playback screen; and an image portion of the recording medium after the stored count number of the horizontal synchronization signals. 1. A method for inserting an image into a recorded still video medium, comprising an erasing means for erasing the image, and a recording means for recording the other image on the erased portion of the recording medium. 2. The method for inserting an image into a recorded still video medium according to claim 1, wherein the other image is a character area or an external input image.