JPH04115684A - Recording and reproducing device - Google Patents

Abstract

PURPOSE:To attain excellent superimposition of a title onto a picked up picture with a simple configuration by recording an ID code of a title data together with a recording signal, reading the title data in terms of the ID code at reproduction and superimposing the read data onto the recording signal. CONSTITUTION:A recording signal on a magnetic tape 13 is reproduced by a rotary head 12 and the reproduced signal is fed to a video signal reproduction circuit 14, a PCM reproduction circuit 15 and a CPU 4 via a recording reproduction changeover switch 11. Then the signal from the reproduction circuit 15 is extracted at an audio output terminal 16 and the signal from the reproduction circuit 14 is fed to an adder 17. Moreover, an ID code is detected by a CPU 4 and the signal from the CPU 4 is fed to a ROM 5, and an optional title data stored in the ROM 5 is read and the signal is fed to the adder 17 through a switch 18 controlled by the CPU 4 and the signal from the adder 17 is extracted at a video output terminal 19. Thus, a title picture is superimposed on the picked-up picture.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention is applicable to a video camera built in a consumer video camera, for example.
The present invention relates to a recording/reproducing device such as a TR.

[Summary of the invention]

The present invention relates to a recording and reproducing device, which has a storage means in which title data is stored, and an ID code for selecting title data is recorded on the recording medium together with a recording signal, and the title data stored in the storage means when played back. By reading out the title and superimposing it on the recorded signal reproduced from the recording medium, it is possible to superimpose a good title without damaging the recorded signal.

[Conventional technology]

For example, in a consumer VTR with an integrated video camera,
Superimpose the title image on the captured image (
superimposition) is being carried out.

That is, FIG. 3 shows the configuration of a conventional device for a so-called 8 mm VTR. In this figure, (31) is an imaging section, and the signal from this imaging section (31) is sent to an adder (
32) to a video signal recording circuit (33). The signal from this adder (32) is also supplied to the viewfinder (34).

Further, a video signal (binarized data) of, for example, a title image shot in advance from the imaging unit (31) is stored in the RAM (35
), and the signal read from this RAM (35) is supplied to the adder (32) through the switch (36). This switch (36) is controlled by the system control CPU (37), and the title image is superimposed on the video signal photographed at the time desired by the user.

The superimposed video signal of this title picture is supplied from the recording circuit (33) to the switch (38). Further, a signal from the audio input terminal (39) is supplied to a PCM recording circuit (40), and a signal from this recording circuit (40) is supplied to a switch (38). Then, the signal selected with this switch (38) is transferred to the recording/playback selector switch (
41) to the rotating head (42), and the video signal is recorded in a range corresponding to 180 degrees of the magnetic tape (43) wound overlappingly around a head drum (not shown), and the video signal is recorded in the remaining range. A PCM audio signal is recorded.

On the other hand, in reproduction, the recording signal of the magnetic tape (43) is reproduced by the rotary head (42), and the signal is transmitted to the video signal reproduction circuit (44) and the PC via the recording and reproduction changeover switch (41).
The signal is supplied to the M regeneration circuit (45). And the regeneration circuit (4
5) is taken out to the audio output terminal (46), and the signal from the reproduction circuit (44) is sent to the adder (47).
'311 and then taken out to the video output terminal (48).

Further, the signal read from RAM (35) is supplied to the adder (47) through the switch (49). And this switch (47) is the C for system control.
Under the control of the PU (37), a title image can be superimposed on the reproduced video signal as necessary during reproduction.

The title image can be superimposed on the image photographed in this manner.

[Problem to be solved by the invention]

However, when using this device to record and play back a video signal with a superimposed title image, in addition to the noticeable deterioration in image quality, the deterioration in image quality is particularly noticeable in the title image part, and color bleeding and color S/H This may cause problems such as a decrease in the image quality and dot interference on horizontal edges in the title area. Furthermore, such deterioration in image quality becomes even more noticeable when dubbing occurs.

Another problem is that the title image superimposed during recording cannot be erased or changed during playback.

In addition, in the above-mentioned apparatus, the purpose of superimposing a title image on the reproduced video signal is to record this superimposed video signal on another VTR, etc., and this recording may cause the same problems as mentioned above. In order to perform this kind of processing during normal playback,
Complex operations such as saving title images are required.

This application has been made in view of these points, and is intended to enable superior title image superimposition with a simple configuration and little deterioration in image quality.

[Means to solve the problem]

The present invention provides a storage means (RO) in which title data is stored.
M (5)), and has a recording medium (magnetic tape (13))
ID for selecting the above title data along with the recording signal.
A code is recorded therein, and means (CPU (4)) detects the ID code during playback of the recording medium, and a switch (switch) that sequentially reads the title data stored in the storage means according to the detected ID code. (17)) A recording/reproducing apparatus is provided with means (an adder (18)) for superimposing the recorded signal on the recorded signal reproduced from the recording medium (circuit (14)).

[Operation] According to this, a storage means in which title data is stored is provided, an ID code of the title data is recorded together with a recording signal, and during playback, title data according to this ID code is read out and superimposed on the recording signal. As a result, the recorded signal on the recording medium is not damaged, and a good title can be superimposed with a simple configuration.

〔Example〕

In FIG. 1, (1) is an imaging section, and a signal from this imaging section (1) is supplied to a video signal recording circuit (2), and a signal from the imaging section (1) is supplied to an adder. (3). Also, (4) is C for system control.
PU (5) is a ROM in which title data is stored, and this ROM (5) contains titles based on themes (New Year's Day, sports day, travel, etc.) that are often photographed on VTRs with built-in video cameras for consumer use. Data of various title images that have been created are stored. Then, a signal from the CPU (4) is supplied to the ROM (5), and arbitrary title data stored in this ROM (5) is read out.
The signal read from (5) is supplied to the adder (3) through a switch (6) controlled by the CPU (4). Furthermore, the signal from this adder (3) is supplied to a viewfinder (7).

Furthermore, the video signal from the imaging section (1) is supplied from the recording circuit (2) to the switch (8). Also CPU (4
) is the ID code that indicates the selection of title data in the ROM (5) and the control of the switch (6).
is supplied to At the same time, the signal from the audio input terminal (9) is supplied to the PCM recording circuit (10), and the signal from this recording circuit (1o) is supplied to the switch (8). The signal selected by this switch (8) is then supplied to the rotary head (12) through the recording/reproduction changeover switch (11) and recorded on the magnetic tape (13).

Therefore, in this device, the video signal captured at the time desired by the user is stored in the ROM by the signal from the CPU (4).
The title image read from (5) is superimposed and displayed on the viewfinder (7), and the captured video signal is recorded on the magnetic tape (13).
Further, together with this video signal, an ID code indicating selection of title data in the ROM (5) and control of the switch (6) is recorded on the magnetic tape (13).

On the other hand, reproduction is performed as follows.

That is, the recording signal of the magnetic tape (13) is transmitted to the rotating head.
(12), and through the recording and playback switch (11), the video signal playback circuit (14) and the PCM playback circuit (
15) and the CPU (4). Then, the signal from the reproduction circuit (15) is taken out to the audio output terminal (16), and the signal from the reproduction circuit (14) is output to the adder (1
7).

Furthermore, the above ID code is detected by the CPU (4),
The signal from this CPU (4) is supplied to the ROM (5), any title data stored in this ROM (5) is read out, and the signal read out from this ROM (5) is supplied to the CPU (4). switch (18) controlled by
) to the adder (17). The signal from this adder (17) is then taken out to the video output terminal (19).

The title image can be superimposed on the image photographed in this manner.

In this case, according to the above-mentioned apparatus, a storage means storing title data is provided, and an ID code of the title data is recorded together with the recording signal, and the ID code of the title data is recorded at the time of reproduction.
Since the title data according to the D code is read out and superimposed on the recorded signal, the recorded signal on the recording medium is not damaged (it is possible to superimpose a good title with a simple configuration. It is something.

That is, in the above-mentioned apparatus, the video signal photographed by the imaging unit (1) is recorded as is on the magnetic tape (13), the video signal is not damaged by the title picture, and the video signal of the title picture is not reproduced. Since the video signal of the title picture is not deteriorated by recording and reproduction, the title picture can be deleted or changed at will during reproduction.

In addition, in the above-mentioned device, the ID code is recorded, for example, 8
When applied to a millimeter VTR, as shown in Figure 2, the so-called A-V guard period between the recording range of the video signal and the recording range of the PCM audio signal, or the user's bit in the PCM audio signal, etc. can be recorded.

In addition, the title data is not limited to the video signal of the title picture, but can also include audio signals such as narration, music, sound effects, etc. In that case, the signal read from the ROM (5) during playback is transmitted to the playback circuit (15). ) is also superimposed on the reproduced audio signal taken out from the audio output terminal (16).

Furthermore, the ROM (5) is replaced with the RAM mentioned in the conventional example, and the video signal (binarized data) of the title image taken in advance from the imaging unit (1) is stored in the title image as in the conventional example. In addition to superimposing the data, the data of this title picture may be replaced with the user's bit in the PCM audio signal or the PCM audio signal itself so that it can be recorded and reproduced.

〔Effect of the invention〕

According to this invention, a storage means storing title data is provided, an ID code of the title data is recorded together with a recording signal, and during reproduction, title data according to this ID code is read out and superimposed on the recording signal. As a result, the recorded signal on the recording medium is not damaged, and it is now possible to superimpose a good title with a simple configuration.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an example of a recording and reproducing apparatus according to the present invention, FIG. 2 is an explanatory diagram of its recording pattern, and FIG. 3 is a block diagram of a conventional recording and reproducing apparatus. (1) is an imaging unit, (2) is a video signal recording circuit, (3)
(17) is an adder, (4) is a CPU for system control, (5) is a ROM in which title data is stored,
(6) (8) (18) is a switch, (7) is a viewfinder, (9) is an audio input terminal, (10) is a PCM
recording circuit, (11) is a recording/reproduction changeover switch (11);
(12) is a rotating head, (13) is a magnetic tape, (14)
) is a video signal reproduction circuit, (15) is a PCM reproduction circuit,
(16) is an audio output terminal, and (19) is a video output terminal.

Claims (1)

[Claims] The recording medium includes an I/O device for selecting the title data along with a recording signal.
means for detecting the ID code when reproducing the recording medium; and means for reading the title data stored in the storage means according to the detected ID code and reproducing the title data from the recording medium. A recording/reproducing apparatus comprising: means for superimposing the recorded signal on the recorded signal.