KR920006955B1 - Image pickup reproducer - Google Patents

Abstract

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Description

Image playback device

1 is a block diagram showing the construction of an embodiment of an image capturing and reproducing apparatus of the present invention.

2 and 4 are block diagrams showing respective examples of the system configuration according to an embodiment of the apparatus of the present invention.

3 is a diagram showing an example of a figure photographed for a special effect.

* Explanation of symbols for main parts of the drawings

1: Optical system 2: Image pickup device

3: camera signal processing circuit 4, 20: adder

5 ₁ : Y output terminal for camera output only

5 ₂ : C output terminal for camera output only

5 ₃ : Composite video signal output terminal for camera output

6: sync signal generator

7: imaging element driving pulse generation circuit

8, 9: switch 10: preamp

11: luminance signal reproduction processing circuit

12: color signal reproduction processing circuit

13, 16, 18: switch 14: synchronous disconnect circuit

15: half H pulse killer circuit 17: vertical synchronous separation circuit

191: Y output terminal 19 ₂ : C output terminal

193: composite video signal output terminal 21, 22: terminal

23: Title

24: liquid crystal drive signal generation circuit

25 liquid crystal panel 26 optical filter

27: light source

Ⅰ: Camera integrated VTR

Ⅱ: Signal Processing Circuit

III: Video Tape Recorder (VTR)

The present invention provides a function of reproducing a recording medium such as a television camera (imaging) having a function of photoelectrically converting an image of an imaging object formed by an optical system to output an image signal, and a magnetic tape on which an image signal is recorded (recorded). An image reproducing apparatus constituted by a video tape recorder (playback section) having a structure of the present invention.

Conventionally, there is a device (camera integrated VTR) in which a television camera and a video tape recorder are integrated, but the video tape recorder of the camera integrated VTR records recording for recording (recording) video signals obtained by imaging with a television camera on a magnetic tape. In addition to the function (recording unit), a reproducing function (reproducing unit) for reproducing the magnetic tape recording the video signal is provided.

By the way, the above-described apparatus (camera integrated VTR) did not use a television camera when the video tape recorder was playing back.

Some recent camera-integrated VTRs have the ability to add titles (so-called double prints) and various special effects (fade in, wiper, etc.). At the time of imaging by a camera, the video signal obtained by photoelectric conversion of the image of an imaging object must be simultaneously performed when recording on a magnetic tape by a video tape recorder. Once recorded on a magnetic tape, it is recorded at the time of reproduction for editing. While reviewing the contents (scene development), the above operations for adding the title and special effects are not performed.

Also, it is possible to add a title by using a video signal from a video tape recorder and a video signal from another video signal source such as a dual print or a special effect device to give a title or special effect to the video signal. When processing such effects and the like must be synchronized with these video signals, processing (synchronization combining) is very complicated because of this.

Therefore, an object of the present invention is to provide an image capturing and reproducing apparatus which solves the above problems of the prior art.

In order to achieve the above object, the present invention provides an image pickup unit which is driven by a timing pulse generated by a synchronization signal generation unit, which outputs an image pickup signal by photoelectrically converting an image of an image pickup object, and a recording medium on which the image signal is recorded. An image reproducing apparatus comprising a reproducing section for reproducing and outputting a reproduced video path, wherein during reproducing, a timing pulse for driving the image capturing section is generated based on a synchronization signal obtained from a reproducing video signal output from the reproducing section, An imaging and reproducing apparatus is provided so that the captured video signal is output in synchronization with the reproduced video signal.

An embodiment of an image capturing and reproducing apparatus of the present invention will be described below with reference to the drawings.

1 is a block diagram showing the configuration of an embodiment (camera integrated VTR I) of the image capturing and reproducing apparatus of the present invention.

In the figure, the camera-integrated VTR (I) is mainly composed of the optical system 1, the imaging device 2, the camera signal processing circuit 3, the synchronization signal generator 6, and the imaging device drive pulse generation circuit 7. It consists of a camera part (imaging part) comprised, the VTR reproduction part mainly comprised by the preamplifier 10, the luminance signal reproduction | regeneration processing circuit 11, and the color signal reproduction | regeneration processing circuit 12. As shown in FIG.

The luminance signal Y and the color signal C (camera output) output from the camera signal processing circuit 3 constituting the camera unit are processed by the recording processing circuit and recorded on the magnetic tape. VTR recording section) is omitted.

An image of an imaging object (subject) input through the optical system 1 is photoelectrically converted into an imaging element 2 such as an imaging tube or a CCD, whereby a camera signal is obtained.

This camera signal is processed by the camera signal processing circuit 3, becomes a luminance signal Y and a color signal C, and is output from the Y output terminal 51 for camera output and the C output terminal 5 _{2 for} camera output, respectively, and again. The luminance signal Y and the color signal C are added to the adder 4 to form a composite video signal and output from the composite video signal output terminal 5 ₃ dedicated to camera output.

Here, the imaging device 2 is driven by an imaging device drive pulse generated by the imaging device drive pulse generation circuit 7 by the synchronization signal supplied from the synchronization signal generator 6, and further includes a camera signal processing circuit ( Similarly, 3) operates by the synchronization signal supplied from the synchronization signal generator 6.

The luminance signal Y and the color signal C obtained by the camera signal processing circuit 3 are supplied to one input terminal a of the switching switch 8 and one input terminal a of the switching switch 9, respectively.

On the other hand, the reproduced video signal reproduced by the reproduction head H attached to the rotating drum (not shown) on which the video signal is recorded is supplied to the preamplifier 10.

The output of the preamplifier 10 is supplied with the luminance signal regeneration processing circuit 11 and the color signal regeneration processing circuit 12, respectively, where they are respectively signal processed. In the luminance signal regeneration process 11, a reproduction luminance signal is output, which is supplied to the other input terminal b of the switching switch 8. In addition, a reproduction color signal is output from the color signal reproduction processing circuit 12, which is supplied to the other input terminal b of the switching switch 9, while the color part carrier fsc is output, which causes the switch 13 to be switched. It is supplied to the synchronization signal generator 16 through.

The reproduction luminance signal output from the luminance signal reproduction processing circuit 11 is supplied to the synchronization separation circuit 14, where the synchronization signal is separated. The separated synchronization signal is supplied to the half H pulse killer circuit 15, where the half H pulses of the vertical blanking period are removed, and the horizontal synchronization signal HD is supplied through the switch 16 to the synchronization signal generator ( 6, while being supplied to the vertical synchronizing separation circuit 17, where the vertical synchronizing signal VD is separated, which is supplied to the synchronizing signal generator 6 via the switch 18.

The luminance signal Y output from the switching switch 8 is output from the Y output terminal 19 ₁ , and the color signal C output from the switching switch 9 is output from the C output terminal 19 ₂ and is again outputted from the luminance signal Y. and the color signal C is be added in the adder 20 to be the composite video signal is outputted from the composite video signal output terminal (91 _3).

The switching switches 8 and 9 are switched by the recording / reproduction switching signal input from the terminal 21, and are switched to the a side in the recording mode and the b side in the regeneration mode by this switching signal.

Therefore, from the output terminals 19 ₁ , 19 ₂ , 19 ₃ , an imaging video signal (camera output) obtained by photoelectric conversion of the image of the imaging object in the camera signal processing circuit 3 is output in the recording mode, In the reproduction mode, a reproduction signal (VTR reproduction output) that reproduces and reproduces the video signal recorded on the magnetic tape T from the luminance signal processing circuit 11 and the color signal processing circuit 12 is output.

In addition, the switches 13, 16, and 18 are switched by the recording / reproduction switching signal input from the terminal 22. The switches 13, 16, and 18 are switched by the switching signal to OFF in the recording mode and to ON in the reproduction mode. .

Therefore, the color subcarriers from the half H pulse killer circuit 15, the horizontal synchronization signal HD from the vertical synchronization separation circuit 17, the vertical synchronization signal VD, and the color signal reproduction processing circuit 12 only in the reproduction mode. fsc is supplied to the synchronization signal generator 6.

It goes without saying that the switching signals for switching to the same mode are supplied to the terminals 21 and 22.

In the above apparatus (camera integrated VTR (I)), when the VTR is in the reproduction mode, the signal processing in the camera signal processing circuit 3 and the driving of the imaging device 2 are performed by the luminance signal reproduction processing circuit 11. The synchronization signal generator 6 by means of the horizontal synchronization signal HD and the vertical synchronization signal VD obtained from the reproduction luminance signal (playback video signal) outputted from the color signal carrier and the color subcarrier fsc output from the color signal reproduction processing circuit 12. Is performed by the synchronous signal generated in the < RTI ID = 0.0 > and the imaging element drive pulse < / RTI >

Therefore, the luminance signal Y and the color signal C (camera output) output from the camera signal processing circuit 3 are obtained as signals in synchronization with the reproduction luminance signal (reproduction video signal).

The synchronization signal generator 6 may use, for example, an integrated circuit (IC) such as shape HD 440072 manufactured by Hitachi Corporation.

In the case of normal imaging by the camera unit of the camera-integrated VTR (I), the horizontal synchronizing signal HD and the vertical synchronizing signal supplied to the synchronizing signal generator 6 via the switches 13, 16 and 18, respectively ( VD) and the color subcarriers fsc are the switches 13, 16, and 18 being turned off and not supplied, respectively, so that the oscillation by the crystal oscillator that is free run by the synchronization signal generator 6 itself. Generate the necessary pulses (synchronization signals) from the output (eg 4fsc).

2 is a block diagram showing an example of a system configuration by one embodiment (camera integrated VTR (I)) of the imaging and reproducing apparatus of the present invention.

The luminance signal Y and the color signal C (camera output or VTR reproduction output) output from the camera integrated VTR (I) are respectively supplied to the signal processing circuit II. Again, as described later in the signal processing circuit (II), signal processing of various special effects is performed, and the signal giving this special effect is supplied to another video tape recorder (VTR) (II), and recorded on a magnetic tape. do.

Here, in the signal processing circuit (II), several signal processing shown next is performed.

1) Cross fade processing that gradually switches from an image (picture) by one video signal to a picture (picture) by the other video signal during camera output or VTR playback output.

(2) As shown in FIG. 2, a double print process in which a VTR reproduction output is superimposed on a camera output obtained by photographing a title 23 or the like with a camera of a camera-integrated VTR (I).

3) The image is reproduced by the VTR reproducing output as a background, and the camera output of a person photographing a person having a specific color (blue, etc.) as a background is superimposed on the background, and the person or the like is displayed in the reproduced image (background). Chroma key processing (attached by the so-called chroma key method).

(4) A process of inserting an image by camera output into a part of the reproduced image by the VTR reproduction output (in this case, the camera unit operates at the point of time of the VTR reproduction output corresponding to the point at which the image by the camera output is inserted). (Inject).

(5) A process of dividing the screen into up, down, left and right, or incline, and displaying images by the VTR reproduction output and images by the camera output on the divided screens, respectively.

(6) A process of displaying an image by the VTR reproduction output only on a black portion obtained by photographing a paper or the like written as an irregular figure on a white background as shown in FIG. 3 with the camera portion of a camera-integrated VTR (I).

4 is a block diagram showing another example of the system configuration by one embodiment (camera integrated VTR (I)) of the image capturing and reproducing apparatus according to the present invention.

In the figure, the liquid crystal drive signal generation circuit 24 is connected to the luminance signal Y output of the VTR reproduction output of the camera-integrated VTR (I), and the liquid crystal plate 25 is further connected to the output thereof. 25 is disposed in front of the optical system 1 of the camera integrated VTR (I) via the optical filter 26. In addition, the light source 27 is disposed on the background side of the liquid crystal plate 25. Then, the light of the light source 27 enters the optical system 1 of the camera integrated VTR (I) through the liquid crystal plate 25 and the optical filter 26 by the camera unit of the camera integrated VTR (I).

In the above configuration, the liquid crystal plate (liquid crystal) 25 is made transparent by the liquid crystal drive signal output from the liquid crystal drive signal generation circuit 24 at a high level of the luminance signal Y, for example, of the VTR reproduction output. At this time, the light of the light source 27 is incident on the optical system 1 through the liquid crystal plate (liquid crystal) 25 and the optical filter 26, so that the image by the camera output becomes an image that is shiny. This is added to the VTR reproduction output by the signal processing circuit (II) to obtain an image having an effect as if it is shining to a high place of the luminance signal level.

4, the liquid crystal plate (liquid crystal) 25 is formed by the liquid crystal drive signal output from the liquid crystal drive signal generation circuit 24 at the edge portion of the VTR reproduction output, for example, the luminance signal Y. By making it transparent, other applications are also possible, such as having a unique effect on the edge of the luminance signal Y.

In recent years, the spread of video tape recorders (VTRs) is remarkable, and many homes have installation VTRs and many users purchase camera integrated VTRs again. In such people, the above-described apparatus of the present invention enables a user to perform special effects on an image taken with a camera, and to perform editing without particularly having a large-scale editing system (special effect apparatus).

In FIG. 2, the signal processing circuit II may be incorporated into the camera-integrated VTR I. In addition, in FIG. 4, the signal processing circuit II and the liquid crystal drive signal generation circuit 24 are shown. At least one of the liquid crystal plate 25, the optical filter 26, and the light source 27 may be configured inside the camera-integrated VTR (I). In these cases, the camera output (signal) output to the output terminals 5 ₁ to 5 ₂ in FIG. 1 may not necessarily be configured to be picked up externally by the output terminal.

In addition, the present invention is not limited to the camera-integrated VTR, but can also be applied to, for example, an electronic still camera having an imaging unit (camera unit) and a reproduction unit.

As described above, according to the image capturing and reproducing apparatus of the present invention, the image capturing video signal output from the image capturing section can be output in synchronization with the image capturing video signal output from the capturing section. For example, a title or the like captured by the imaging unit may be mixed (duplexed) into a reproduced video signal, or the screen captured by the imaging unit and a screen by the reproduced video signal may be gradually switched (cross fade). It is characterized by the fact that various special effects can be easily operated.

Claims (1)

An imaging unit 2 which is driven by a timing pulse to photoelectrically convert an image of an imaging object and outputs an imaging video signal; and playback units 11 and 12 for reproducing a recording medium on which the video signal is recorded and outputting the reproduced video signal. ), A synchronization separating circuit 14, 17, and 15 for separating the synchronization signal from the reproduced video signal output from the reproduction units 11 and 12, and a synchronization for generating timing pulses for driving the imaging unit 2; And a switching circuit 13, 16, 18 for switching the synchronization signal obtained from the synchronization separation circuits 14, 17, and 15 to be supplied to the synchronization signal generator 6 during reproduction. And the reproduction signal, wherein the synchronization signal generator (6) is supplied with the synchronization signal to generate the timing pulses and to synchronize and output the captured image signal to the reproduced video signal.

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