JP3057261B2 - Recording and playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is incorporated in, for example, a consumer video camera.
It relates to a recording / reproducing device such as a VTR.

[Summary of the Invention]

The present invention relates to a recording / reproducing apparatus, which has a storage means for storing title data, and a recording medium in which an ID code for selecting title data is recorded together with a recording signal, and the title data stored in the storage means during reproduction. Is read and superimposed on a recording signal reproduced from a recording medium, thereby enabling good superimposition of a title without damaging the recording signal.

[Conventional technology]

For example, in a consumer video camera integrated VTR,
Superimposing (superimposing) a title image on a photographed image has been performed.

That is, FIG. 3 shows a configuration of a conventional apparatus in a so-called 8 mm VTR. In this figure, reference numeral (31) denotes an imaging unit, and a signal from the imaging unit (31) is added to an adder (32).
Is supplied to the recording circuit (33) for the video signal. The signal from the adder (32) is used as the viewfinder (34)
Supplied to

Further, a video signal (binarized data) of, for example, a previously captured title image from the imaging unit (31) is supplied to the RAM (35), and a signal read from the RAM (35) is transmitted through the switch (36). It is supplied to the adder (32). And this switch (36) is the CPU (37) for system control
The title image is superimposed (superimposed) on the video signal photographed when the user desires.

The superimposed video signal of the title picture is supplied from the recording circuit (33) to the switch (38).
The signal from the audio input terminal (39) is sent to the PCM recording circuit (4
0), and the signal from the recording circuit (40) is supplied to the switch (38). The signal selected by the switch (38) is supplied to the rotary head (42) through the recording / reproduction switch (41), and the magnetic tape (4) is wound around the head drum (not shown).
3) The video signal is recorded in the range corresponding to 180 degrees, and the PCM audio signal is recorded in the remaining range.

On the other hand, in the reproduction, the recording signal of the magnetic tape (43) is reproduced by the rotating head (42) and supplied to the video signal reproduction circuit (44) and the PCM reproduction circuit (45) through the recording / reproduction switch (41). Is done. Then, a signal from the reproduction circuit (45) is taken out to the audio output terminal (46), and a signal from the reproduction circuit (44) is taken out to the video output terminal (48) through the adder (47).

The signal read from the RAM (35) is the switch (49)
Through an adder (47). The switch (47) is controlled by the system control CPU (37), so that the title picture can be superimposed on the reproduced video signal as necessary at the time of reproduction.

The title image can be superimposed (superimposed) on the image captured in this way.

[Problems to be solved by the invention]

However, in this apparatus, when a superimposed video signal of a title image is recorded and reproduced, in addition to general image quality deterioration, image quality deterioration particularly in the title image portion becomes more conspicuous, and color blur and color S / N are reduced. Drop, horizontal line dot interference of the title part, etc. occur. Further, such deterioration of image quality becomes more remarkable by dubbing.

Also, there is a problem that a title image superimposed at the time of recording cannot be deleted or changed at the time of reproduction.

The purpose of superimposing a title picture on a reproduced video signal in the above-described apparatus is to record the superimposed video signal on another VTR or the like, and this recording causes the same problem as described above. And to perform such processing during normal playback,
A complicated operation such as saving a title image is required.

The present application has been made in view of such a point, and it is an object of the present application to perform a superimposition of a good title image with a simple configuration and with little image quality deterioration.

[Means for solving the problem]

The present invention has storage means (ROM (5)) storing a plurality of title data including a video signal and an audio signal,
A recording medium (magnetic tape (13)) is recorded with an ID code for selecting one of the plurality of title data together with a recording signal, and means (CPU (4) for detecting the ID code when reproducing the recording medium. )), One of the plurality of title data stored in the storage means is read (switch (17)) according to the detected ID code and reproduced (rotated (14)) from the recording medium. A recording / reproducing apparatus characterized by comprising means (adder (18)) for superimposing on the video signal and the audio signal of the recording signal, respectively.

[Action]

According to this, the storage means for storing the title data is provided, the ID code of the title data is recorded together with the recording signal, and the title data according to the ID code is read out and superimposed on the recording signal during reproduction. Therefore, a good title can be superimposed with a simple configuration without damaging the recording signal on the recording medium.

〔Example〕

In FIG. 1, reference numeral (1) denotes an image pickup unit. A signal from the image pickup unit (1) is supplied to a video signal recording circuit (2), and a signal from the image pickup unit (1) is added to an adder. (3)
Supplied to (4) is for system control
The CPU (5) is a ROM in which title data is stored. This ROM (5) has a V-camera integrated with a consumer video camera.
Stores data of various pre-established title images formed according to the theme (New Year, athletic meet, travel, etc.) that is frequently taken in TR. And the signal from CPU (4) is ROM (5)
Is read from the ROM (5), and a signal read from the ROM (5) is read. A signal read from the ROM (5) is added to the adder (3) through a switch (6) controlled by the CPU (4). Supplied to Further, the signal from the adder (3) is supplied to the viewfinder (7).

Further, the video signal from the imaging unit (1) is transmitted to the recording circuit (2).
To the switch (8). An ID code indicating selection of title data in the ROM (5) and control of the switch (6) from the CPU (4) is supplied to the switch (8). At the same time, the signal from the audio input terminal (9) is PCM
The signal is supplied to the recording circuit (10), and the signal from the recording circuit (10) is supplied to the switch (8). The signal selected by this switch (8) is applied to the recording / playback switch (1).
It is supplied to the rotating head (12) through 1) and recorded on the magnetic tape (13).

Therefore, in this apparatus, the title picture read from the ROM (5) is superimposed on the video signal photographed at the time of the user's request by the signal from the CPU (4) and displayed on the viewfinder (7). The photographed video signal is recorded on a magnetic tape (13), and an ID code indicating selection of title data in a ROM (5) and control of a switch (6) is recorded on the magnetic tape (13) together with the video signal. Be recorded.

On the other hand, reproduction is performed as follows. That is, the recording signal of the magnetic tape (13) is reproduced by the rotating head (12), and the reproduction circuit (14) of the video signal, the PCM reproduction circuit (15) and the CPU (4) are passed through the recording / reproduction switch (11).
Supplied to The signal from the reproduction circuit (15) is taken out to the audio output terminal (16), and the reproduction circuit (14)
Is supplied to the adder (17).

Further, the above-mentioned ID code is detected by the CPU (4), and a signal from the CPU (4) is supplied to the ROM (5), and this RO
Arbitrary title data stored in M (5) is read, and a signal read from this ROM (5) is supplied to an adder (17) through a switch (18) controlled by a CPU (4). Then, the signal from the adder (17) is taken out to the video output terminal (19).

The title image can be superimposed (superimposed) on the image captured in this way.

In this case, according to the above-described apparatus, a storage unit in which title data is stored is provided, and an ID code of the title data is recorded together with a recording signal.
Since the title data according to the code is read and superimposed on the recording signal, the recording signal on the recording medium is not spoiled, and a good title can be superimposed with a simple configuration. is there.

That is, in the above-described apparatus, the video signal captured by the imaging unit (1) is recorded as it is on the magnetic tape (13), so that the video signal is not damaged by the title image and the video signal of the title image is reproduced. Since the title image is superimposed later, the video signal of the title image is not deteriorated by recording and reproduction, and the title image can be arbitrarily deleted or changed during reproduction.

In the above-described device, the ID code is recorded, for example, in 8
When applied to a millimeter VTR, as shown in FIG. 2, a so-called AV guard period between a recording range of a video signal and a recording range of a PCM audio signal, or a user's bit in a PCM audio signal. Can be recorded.

Also, the title data is not limited to the video signal of the title picture, but may include audio signals such as narration, music, and sound effects. In this case, the signal read from the ROM (5) at the time of reproduction is reproduced by the reproduction circuit (15). ) To the audio output terminal (1
It is also superimposed on the reproduced audio signal extracted in 6).

Further, the ROM (5) is replaced with the RAM described in the conventional example, and the video signal (binarized data) of the title image captured in advance from the imaging unit (1) is stored and the title image is stored in the same manner as in the conventional example. And superimpose the title image data in PCM
Recording and reproduction may be performed in place of the user's bits in the audio signal or the PCM audio signal itself.

〔The invention's effect〕

According to the present invention, the storage means for storing the title data is provided, the ID code of the title data is recorded together with the recording signal, and the title data according to the ID code is read out and superimposed on the recording signal during reproduction. So that the recording signal on the recording medium is not impaired,
A good title can be superimposed with a simple configuration.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of an example of a recording / reproducing apparatus according to the present invention, FIG. 2 is an explanatory diagram of a recording pattern thereof, and FIG. 3 is a configuration diagram of a conventional recording / reproducing apparatus. (1) is an imaging unit, (2) is a video signal recording circuit, (3)
(17) is an adder, (4) is a CP for system control
U, (5) is 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 / playback switch (11), (12) is a rotary head,
(13) is a magnetic tape, (14) is a video signal reproduction circuit,
(15) PCM playback circuit, (16) audio output terminal, (19)
Is a video output terminal.

Claims (1)

(57) [Claims] 1. A storage means for storing a plurality of title data including a video signal and an audio signal, wherein an ID code for selecting one of the plurality of title data is recorded together with a recording signal on a recording medium. Means for detecting the ID code at the time of reproduction of the recording medium; and reading one of the plurality of title data stored in the storage means in accordance with the detected ID code and reproducing from the recording medium. Means for superimposing on the video signal and the audio signal of the recording signal, respectively.