JPH02241183A - Video tape recorder - Google Patents

Abstract

PURPOSE:To easily insert a character picture, etc., to a photographed picture by providing a signal processing means, which superimposes information sent by means of a storing means on an additional information sent by means of an additional information storing means, inserting the character picture, voice, etc., while reproducing the recorded information, and recording the inserted superimposed information on a magnetic recording medium, which is under reproduction. CONSTITUTION:The information such as the character picture, etc., to be newly recorded in addition to the already recorded video information is stored into an additional information storing means 8, a reproducing head 1 reproduces the photographed image, where the signal of the character picture, etc., are inserted, from a magnetic recording medium 4, stores it into a storing means 7, and an erasing head 2 erases the reproduced information from the magnetic recording medium 4. On the other hand, a picture processing means 9 superimposes the video information reproduced by the reproducing head 1 on the information such as the character picture supplied from the additional information storing means 8, sends it to a recording head 3, and the recording head 3 records the superimposed information on a track, which is reproduced by the reproducing head 1 and erased by the erasing head 2. Thus a little can easily be inserted to a desirable scene.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to video tape recorders.

[Prior art and its problems] Among video tape recorders (hereinafter referred to as VTRs), in particular camera-integrated VTRs in which a video camera and a VTR are integrally formed, characters, pictures, etc. are recorded in the video being shot. A device having a so-called superimpose function, which inserts information called a title, is known.

In a camera-integrated VTR having such a superimpose function, there are the following two methods for inserting a title into a photographed image.

One is to photograph the title to be inserted in advance with a camera-integrated VTR and store it in a storage section built into the camera-integrated VTR. Then, during video recording, in which images are recorded on the videotape provided in the camera-integrated VTR, the memorized title is inserted into the captured image by operating a switch on the camera-integrated VTR at a desired scene by the operator. This is a method in which a captured image with a title inserted at the same time is recorded on a videotape.

In this case, the title can be inserted into the video only when the video in which the title is to be inserted is being recorded, and the operator must perform both the shooting and title insertion operations. There is a problem in that the timing is difficult and the title cannot be inserted at the scene desired by the operator.

The other method is to first take a picture of the title using a camera-integrated VTR and store it in the storage section in the same way as described above. Also, the video in which the title is to be inserted is previously photographed and recorded on videotape. Then, use the camera-integrated VTR to play back the captured images recorded on the videotape and display them on the monitor screen, and when the scene in which you want to insert the title is displayed on the monitor, operate the camera-integrated VTR switch to display the video on the monitor screen. In this method, a photographed image with a title inserted is displayed on the display screen.

In this case, the title is inserted into the captured image on the monitor display screen, so if the title is to be recorded, the video tape can be wrapped around the rotating drum by increasing the angle. PCM for recording audio signals
) This is carried out with only the rack in the recording state, but there is a problem in that the winding increases the number of corners and complicates the structure of the VTR.

The present invention has been made to solve the above-mentioned problems, and allows the operator to easily insert a title into a desired scene, and at the same time allows the video with the inserted title to be recorded on the same video tape. It can be recorded simultaneously, and the structure is not complicated when performing audio after-recording.
To provide a VTR with little deterioration in N ratio, in which information recorded on a videotape can be updated with new information and the updated information can be recorded on the same videotape. purpose.

[Means for Solving the Problems] The present invention includes a reproducing head for reproducing information recorded on a track on a magnetic recording medium, a storage means for storing information reproduced by the reproducing head, and a storage means for storing the information reproduced by the reproducing head. If it is necessary to record the captured images, there is a problem in that a VTR is also required to record the images displayed on the monitor.

Further, VTRs in which audio signals are recorded using the so-called high-fidelity (hereinafter referred to as HiFi) system also have the following problems.

The audio signal recorded on a Hi-Fi VTR is multiplexed with the video signal and recorded in the center of the video tape where the video signal is recorded, or the audio signal and video signal are recorded using the so-called deep recording method. It is sometimes recorded in the center of the videotape. Therefore, when additionally recording audio signals, so-called audio after-recording, the audio signals are conventionally recorded on an audio track provided at the edge of the video tape for recording audio signals using a fixed head. Recording of an audio signal using such a fixed head has a problem in that the S/N ratio of the audio signal is deteriorated compared to an audio signal recorded using the HiFi method.

In addition, in a so-called 8mm VTR, after the information reproduced by the reproduction head is stored in the audio acronym storage means, an erasing head erases the information recorded on the track scanned by the reproduction head from the magnetic recording medium. , an additional information storage means for storing information to be newly recorded on a magnetic recording medium, a single signal processing stage for superimposing information sent out by the storage means and additional information sent out by the additional information storage means, the reproducing head and the above-mentioned reproducing head. The present invention is characterized by comprising a recording head for recording superimposed information sent by a signal processing means on a track scanned by the erasing head.

[Operation] With this configuration, the additional information storage means stores in advance information such as a character image that is to be newly recorded in addition to the video information already recorded on the magnetic recording medium. The reproducing head reproduces a photographed image into which a signal such as a character image is to be inserted from the magnetic recording medium and stores it in the storage means. The erasing head then erases the information reproduced by the reproducing head from the magnetic recording medium. On the other hand, the image processing means superimposes, for example, video information reproduced by the playback head and information such as a character image supplied from the additional information storage means, and sends the superimposed information to the recording head. Then, the recording head records the superimposed information on the track where the information reproduced by the reproducing head and erased by the erasing head was recorded.

[Example] As shown in FIG. 1, which is an example of the VTR of the present invention,
The VTR of the present invention has a rotating cylinder 5 equipped with a total of six magnetic heads 1, 2, and 3 of three types for recording, reproducing, and erasing video information from a loaded video tape 4. As shown in FIG. 3, which is a developed view of the outer peripheral surface, the rotating cylinder 5 is composed of an upper cylinder 5a that moves in the direction of arrow E, and a lower cylinder 5b that is fixed to a base (not shown).

A lead 5c for guiding the running video tape 4 is formed in the lower cylinder 5b.

On the other hand, on the outer peripheral surface of the upper cylinder 5a, a video signal recorded on the video tape 4 is placed at a position on the same circumference "2" close to the interface with the lower cylinder 5b, in the center of the upper cylinder 5a as in the conventional case. Recording and reproducing heads 3a and 3b for recording and reproducing video signals on videotape 4,
As shown in the figure, the pre-read only reproducing head 1 and the circumference 2 are provided at positions 270 degrees apart in a direction opposite to the rotational direction of the rotary cylinder 5, and 180 degrees apart from each other.

Note that the above-mentioned dimensions X and 7 change depending on the angle at which the rotary cylinder 5 is attached to the video tape 4. Also, the mounting angle of the rotary erasing head 2 and the recording/reproducing head 3 with respect to the read-ahead only reproducing head l is also an example.
It can be changed as appropriate.

As shown in FIG.
The output side of is a playback information storage that stores information sent out by the playback signal processing unit 6 via a playback signal processing unit 6 that performs processing such as amplification and digital conversion of the video signal played back by the read-ahead playback head l. 7. The output side of the reproduction information storage section 7 includes a read-ahead-only reproduction head Ia and a read-ahead reproduction head 1 which exclusively reproduces the number stored in the title storage section 8.
b are provided at positions 180 degrees apart on the outer peripheral surface of the upper cylinder 5a, as shown in FIG. 2, which is a plan view of the rotary cylinder 5.

Further, as shown in FIG. 3, at a circumferential position that is X-dimensionally arranged in the axial direction of the upper cylinder 5a in the direction opposite to the lower cylinder 5b from the circumferential position where the read-ahead-only reproducing head 1 is installed C'3, A rotary erasing head 2 that erases only the video signal on the video tape 4 played by the read-ahead only playback head l.
As shown in FIG. 2, a and 2b are heated positions at an angle of θ, which is an appropriate angle in the direction opposite to the rotational direction of the rotary cylinder 5 shown by arrow B from the position where the read-ahead-only reproducing head 1 is provided. are located 180 degrees apart from each other. still,
The rotating erase head 2a is a read-ahead-only reproducing head 1. The rotating erase head 2b is provided at a position adjacent to the read-ahead-only reproducing head la.

Furthermore, a camera-integrated VT whose Y dimension is ordered in the axial direction of the upper cylinder 5a from the circumferential position where the rotary erasing head 2 is provided.
The title information shot in R is supplied and connected to an image processing section 9 which superimposes the title information on the video information reproduced from the videotape 4. The output side of the image processing section 9 is connected to a recording signal processing section IO that performs signal processing for recording the superimposed video information on the video tape 4, and the output side of the recording signal processing section 10 is connected to It is connected to the rotary erasing head 2 via an erasing circuit 11, which is a circuit for erasing video information recorded on the image data, and is also connected to the recording/reproducing head 3.

As shown in FIG. 2, in a VTR constructed in this manner, the rotary head 5 rotates in the direction of arrow B, and the video tape 4 moves in the direction of arrow A. In such a case, the relationship between the moving direction of the video tape 4 and the range of video information recorded on the video tape 4, so-called tracks, is as shown in FIG. Video information is recorded on the track in the direction of the arrow. 1, the videotave 4 moves in the direction of arrow F, and in FIG. 3, the upper cylinder 5a rotates in the direction of arrow E.

Further, it is assumed that the title to be inserted into the photographed image is photographed and stored in the title storage section 8 in advance using the camera-integrated VTR.

First, the operator puts the videotape loaded into the camera-integrated VTR on which the photographed image in which the title is to be inserted into the videotape into a playback state. The operator then observes the captured images being played back on a display screen such as a monitor, and when a scene for inserting a title that has been shot and memorized in advance with this camera-integrated VTR appears on the display screen such as a monitor, the operator Camera integrated V
Operate an operation button provided on the TR for inserting a title into the captured image being played back. The relationship between each magnetic head and the video tape 4 when operated in this manner will be described below.

As shown in FIG. 4, the pre-read only playback head la scans the videotape 4 from the read start position 1-I shown in FIG. The cylinder 5a rotates once.

Also, at time T2, the rotating erasing head 2a moves to K shown in FIG.
The reading start position I4 is reached at time T3.

As can be determined from the rotational direction of the upper cylinder 5a shown by arrow E in FIG. It moves in the axial direction of the upper cylinder 5a, that is, in the direction of arrow G shown in FIG. Therefore, at time T3, the track (a) reaches the circumferential line where the rotary erasing head 2a is provided. Therefore, from time T3, the rotating erasing head 2a tracks (
Start erasing the video information recorded in b).

As mentioned above, the truck (A) moves in the direction of arrow G shown in FIG. 3 as time passes, and the upper cylinder 5
Since a also rotates in the direction of arrow B, the recording/reproducing head 3a reaches the successive start position H at time T4, and at the same time the track (
A) reads the video information recorded on the track (A) which is the recording/reproducing head between time TI and time T2.

The read video information is sent to the reproduction signal processing section 6 where it is subjected to signal processing, stored in the reproduction information storage section 7, and then sent to the image processing section 9.

The image processing section 9 superimposes the supplied reproduced video information and the title information supplied from the title storage section 8. That is, at this stage, titled video information is formed by superimposing the information of the title photographed in advance on the video information reproduced from the videotape 4. This titled video information is then sent from the image processing section 9 to the recording signal processing section IO.

On the other hand, at time T2 when the read-ahead-only playback head 1a reaches the readout end position J, the other read-ahead-only playback head 1b reaches the successive start position H, and the video tape 4 also moves in the direction of arrow C. The track (B) located next to the track (A) is scanned until time T5. Then, at time T5, the read-ahead only reproducing head la returns to the reading start position 11 again. That is, it moves onto the circumferential line where time T13a, indicated by Z in FIG. 4, is provided. Therefore, the recording/reproducing head 3a starts recording the video signal of the titled video information supplied from the recording signal processing section 1O mentioned above onto the track (A) from time T4, and the recording/reproducing head 3a reaches the read end position J. Recording continues until time T7 is reached.

As described above, the read-ahead only reproducing head lb, the rotary erasing head 2b, and the recording/reproducing head 3b are spaced 180 degrees apart from each other on the circumference of the upper cylinder 5a from the pre-reading only reproducing head la, the rotary erasing head 2a, and the recording/reproducing head 3a, respectively. The same operation as described above is performed.

That is, at time T5, the read-ahead only playback head 1b finishes playing back the video information recorded on the track (b), and at time T5
6, the rotating erasing head 2b starts erasing the video information recorded on the track (B).

Then, from time T7, the recording/reproducing head 3b starts recording the next signal of video information with a title onto the track (b).

In this way, the present camera-integrated VTR allows the operator to insert a title at a desired scene while playing back the captured image recorded on the videotape and displaying the played image on a display screen such as a monitor. The operator can concentrate on inserting the title, and there is no need to worry about timing to insert the title. Furthermore, after playing back the video signal recorded on the videotape 4, the played video signal is erased, and a video signal with a title is recorded on the track where the erased video signal was recorded. To record a photographed image with a title inserted on a videotape without preparing a VTR for recording an attached video signal.

Incidentally, when reproducing the video signal recorded on the video tape 4 or recording the video signal, only the recording and reproducing heads 3a and 3b are in operation, and like a conventional VTR, the recording and reproducing heads 3a and 3b are used to record the video signal. is recorded and played back on videotape 4.

Next, the case of performing audio after-recording using the HiFi method will be explained with reference to FIG.
The components and operations of the rotary cylinder convert the supplied video and audio information into signals and send them to the rotary erasing head 2 via the recording/reproducing head 3 and the erasing circuit 11.

In the same operation as described above with reference to FIGS. 2 to 5, the rotary erasing head 2 erases the video signal and audio signal recorded on the track (A), and the recording/reproducing head 3 Tracks (a) the video and audio signals in which the video and audio signals supplied from the recording signal processing unit 10' are combined.
to be recorded.

In this way, according to this VTR, the audio signal added in audio after-recording is recorded using a rotating head, similar to the HiF'i method, so that the S/
There is no deterioration in the N ratio, and there is no need to increase the amount of video tape wrapped around the rotating cylinder, so the structure of the VTR does not become complicated.

[Effects of the Invention] As detailed above, according to the present invention, information such as character images and sounds can be inserted while reproducing information recorded on a magnetic recording medium, and information such as character images and sounds can be inserted into information such as character images and sounds. The number of magnetic heads, their installation positions, and their functions are the same as in the case of the VTR described above, and the same components are given the same reference numerals.

The read-ahead only reproducing head 1 reproduces the video and audio signals recorded in the central portion of the video tape 4, for example, the track (a) mentioned above, and sends them to the reproduced signal processing section 6'. The reproduction signal processing unit 6° separates the supplied video signal and audio signal, processes only the video signal, and sends it to the reproduction information storage unit 7. The reproduction information storage section 7 temporarily stores the video information of the supplied video signal, and sends the stored video information to the image processing section 21 .

Audio information for performing audio after-recording is stored in advance in the audio information storage section 20, and this audio information is sent to the image processing section 21. Therefore, the image processing section 21 synthesizes the video information supplied from the reproduction information storage section 7 and the audio information supplied from the audio information storage section 20, and sends the synthesized image and audio information to the recording signal processing section 10'. do. The recording signal processing unit 10' can record the superimposed information into which the information is inserted so that it can be recorded on the video tape 4, on the magnetic recording medium being played back, so that it can insert signals such as character images into the photographed image. The timing is not difficult, and the video signal into which signals such as character images are inserted can be recorded on a magnetic recording medium without having to prepare a VTR to record the image displayed on the display screen. In a VTR using this, the structure is not complicated, and audio after-recording can be performed without deteriorating the S/N ratio.

In this way, the information recorded on the videotape is updated with new information, and a VTR capable of recording the updated information on the same videotape can be provided.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of the VTR of the present invention, and FIG.
The figure is a plan view of the rotary cylinder showing the mounting position of each magnetic head of the VTR of the present invention, Figure 3 is a developed view of the rotary cylinder shown in Figure 2, and Figure 4 is a diagram showing the operation of the VTR of the present invention. Time chart, FIG. 5 is a diagram showing the range of tracks recorded on videotape by the present invention and the conventional VTR,
FIG. 6 is a block diagram showing the structure of a VTR according to another embodiment of the present invention. and 1b...read-ahead-only playback head, and 2b...rotating erase head, and 3b...recording/playback head,...upper cylinder, 5b...lower cylinder, playback information storage section, and...title memory. Department, Image Processing Department, 20・
...Audio information storage unit, image processing unit. Patent applicant: Ricoh Co., Ltd. − Agent: Patent attorney: 1 person, Aoyama Sogai

Claims (1)

[Claims] (1) A reproducing head for reproducing information recorded on a track on a magnetic recording medium, a storage means for storing the information reproduced by the reproducing head, and a storage means for storing the information reproduced by the reproducing head. an erasing head for erasing information recorded on a track scanned by the reproducing head from the magnetic recording medium after being stored; additional information storage means for storing information to be newly recorded on the magnetic recording medium; and a recording head for recording the superimposed information sent by the signal processing means on a track scanned by the reproducing head and the erasing head. A videotape recorder characterized by: