KR0135169B1 - Movie camera system that has a function of image display - Google Patents

Abstract

A movie camera system has been proposed that has an image display function that can perform a project function together with a viewfinder function.

The composite video signal output from the video signal reproducing apparatus of the camera apparatus or the VTR section is converted into a displayable state in the video signal processing apparatus in the display apparatus and then displayed on the display element having a matrix pixel form.

The arrangement of video signals displayed on this display element is converted differently depending on whether the selected function is applied to the project or the viewfinder. The image displayed on the display element is strongly or weakly illuminated by the light source located rearward according to the selected function.

The user can view or monitor the image through the focus lens installed on the front of the display element, and the image is projected on the external screen through the focus lens because the image is strongly reflected during the projection function. Therefore, the user can view the image on a large screen.

The array conversion of the image signal mentioned above may be pre-converted using one memory device before the image signal is applied to the display device.

Description

Movie camera system with video display

1 is a schematic structural block diagram of a conventional movie camera system.

2A is a schematic cross-sectional view of a conventional viewfinder.

2B is a schematic structural block diagram of a conventional viewfinder circuit.

Figure 3a is a schematic cross-sectional view of a conventional project.

3b is a schematic structural block diagram of a conventional project circuit.

4A is an explanatory diagram showing the principle of a conventional viewfinder.

4B is an explanatory diagram showing a project using the conventional viewfinder as it is.

4C is an explanatory diagram showing a project using an improved viewfinder.

5 is a block diagram of a movie camera system according to Embodiment 1 of the present invention.

6A is a block diagram of a camera means according to Embodiment 1 of the present invention.

6b is a block diagram of a camera means according to a second embodiment of the present invention;

7 is a block diagram of a display means according to Embodiment 1 of the present invention;

8A is an explanatory diagram for explaining a focal length of a focus lens unit.

8B is an explanatory diagram for explaining the zoom function of the focus lens unit.

9A is a detailed circuit diagram of a driving unit and an interface unit according to Embodiment 1 of the present invention.

9B is a block diagram illustrating a bidirectional register.

9c is a detailed circuit diagram of a unit portion according to the embodiment of the bidirectional register.

9d is a detailed circuit diagram of a unit part according to another embodiment of the bidirectional register.

10 is an explanatory diagram showing a process in which an image signal is applied to the LCD panel in a horizontal direction by a horizontal synchronization signal.

FIG. 11 is an explanatory diagram showing a process in which a column driving signal is applied to the LCD panel in a vertical direction by a vertical synchronization signal. FIG.

12 is a block diagram of a movie camera system according to a second embodiment of the present invention.

Fig. 13 is a block diagram showing the configuration of the display means according to the second embodiment of the present invention.

14 is a detailed circuit diagram of a driving unit and an interface unit according to a second embodiment of the present invention.

FIG. 15 is a block diagram of a movie camera system according to Embodiment 3 of the present invention; FIG.

FIG. 16 is a block diagram of a movie camera system according to Embodiment 4 of the present invention; FIG.

17 is a block diagram of a movie camera system according to a fifth embodiment of the present invention.

18 is a block diagram of a movie camera system according to Embodiment 6 of the present invention;

19 is a block diagram of a movie camera system according to Embodiment 7 of the present invention;

20 is a block diagram of a movie camera system according to Embodiment 8 of the present invention.

21 is a block diagram of a movie camera system according to Embodiment 9 of the present invention.

* Explanation of symbols for the main parts of the drawings

52, 57, 77, 93, 109: camera means

54: video signal recording means

53, 63, 78, 101, 110: video signal reproducing means

55a, 55b, 81, 111: switching means

50, 58, 64, 69, 75, 84, 91, 99, 107: key signal input means,

51, 59, 65, 70, 76, 85, 92, 100, 108: Control fishery

56, 62, 68, 74, 83: display means

60, 66, 72, 79, 80: memory means

61, 67, 73, 82: D / A conversion means

71: A / D conversion means

87, 95, 103, 113: LCD panel

88, 96, 104, 114: viewfinder

89, 97, 105, 115: LCD driving means

90, 98, 106, 116: synchronizing signal generating means

86, 94, 102, 112: video signal processing means

The present invention relates to a movie camera system, and more particularly, to a movie camera system having a video display function capable of performing a projection function as well as a view finding function. In general, a movie camera system, also called a camcorder, includes a video cassette recorder (VCR) portion for recording a video signal of a largely active subject, a camera portion for photographing a subject, and a viewfinder portion for monitoring a screen shot. It consists of.

Referring to Figure 1, the configuration of a conventional movie camera system will be described schematically.

FIG. 1 shows a camera unit 1 for photographing a subject and converting it into an electric image signal. The image signal processor 2 for converting an image signal output from the camera unit 1 into a composite image signal consisting of luminance and color signals. A VCR unit 3 including a recording unit 3b for recording the composite video signal output from the signal processing unit 2 on the VCR tape and a playback unit 3a for reproducing the composite video signal recorded on the VCR tape: a VCR unit ( 3) or a viewfinder circuit 4 and a viewfinder circuit for processing the composite video signal output from the image signal processing section 2 to be displayed on an internal liquid crystal display device (LCD device) 5a. (4) is provided with a viewfinder (5) for displaying a video signal input from the internal liquid crystal display element (hereinafter referred to as LCD) 5a so that the user can monitor the image being taken or pre-recorded. .

FIG. 2A is a schematic cross-sectional view showing the viewfinder 5 described in FIG. 1, as shown, the viewfinder housing 5b; An LCD panel 5b installed in the viewfinder housing 5b; A first polarizing plate 5c provided in front of the LCD panel 5b; A second polarizing plate 5b provided at the rear of the LCD panel 5b: a light source 5e provided adjacent to the rear of the second polarizing plate 5b; It consists of the eye lens 5f provided in front of the 1st polarizing plate 5c.

FIG. 2B is a schematic configuration diagram of the viewfinder circuit 4 described in FIG. 1 so that an image signal of a subject photographed through the camera unit 1 can be displayed on the LCD panel 5b as shown in FIG. An LCD driver 4b for driving the LCD panel 5b to display an image of a subject in accordance with a signal processor 4a for processing and an output signal from the signal processor 4a; A synchronization controller 4c which provides a signal processor 4a and an LCD driver 4b with a synchronization signal for synchronizing the horizontal and vertical sides of an image displayed on the LCD panel 5b; It consists of a light source driver 4d for driving the light source 5e to provide a back light to the LCD panel 5b.

The operation of the movie camera system configured as described above will be described in detail with reference to FIGS. 1 to 2.

The camera unit 1 generates an electric image signal after photographing a subject. The video signal is sent to the video signal processor 2, which converts the video signal into a composite video signal consisting of the luminance signal Y and the color signal C, and then transmits the video signal to the VCR unit 3. The recording section 3b of the VCR section 3 records this signal on the VCR tape.

In addition, when the image signal processing unit 2 transmits an image signal to the viewfinder circuit 4, the viewfinder circuit 4 processes the signal so that it can be displayed on the LCD panel 5a in the viewfinder 5, The processed signal is provided to the LCD panel 5a.

Therefore, a predetermined image is displayed on the LCD panel 5a.

The image displayed on the LCD panel 5a is illuminated at an appropriate brightness by the light source 5e, and the subject can be photographed while looking through the image formed on the LCD panel 5a through the used eye lens 5f.

In this manner, the user can monitor the image captured during the shooting through the viewfinder 5, but can also monitor the image signal reproduced from the VCR tape through the viewfinder 5.

FIG. 3A is a schematic configuration diagram of a conventional project 6, as shown in FIG. 6A, an LCD panel 6b installed in an intermediate portion of the project housing 6a, and a first polarizing plate 6c provided in front of the LCD panel 6b. ; A second light emitting plate 6b provided at the rear of the LCD panel 6b: a light source 6e provided at a predetermined distance behind the second polarizing plate 6d; It consists of the project lens 6f provided in the opening part of the project housing 6a. Camcorders with built-in LCD viewfinders are commercially available from Sony or SANYO in Japan.

FIG. 3B is a block diagram showing the configuration of the project circuit 7 for operating the project shown in FIG. 3A so that video signals input from a video cassette recorder, a movie camera system and a television receiver can be displayed on the LCD panel 6b. On the LCD panel 7b and the LCD driver 6b for driving the LCD panel 6b so that the signal processor 7a to be processed and the video signal output from the signal processor 7a are displayed on the LCD panel 6b. The audio signal input from the synchronization control unit 7c for adjusting the vertical and horizontal synchronization of the displayed video signal, the light source control unit 7d for controlling the output of the light source 6e, the video cassette recorder or movie camera system or the television receiver. And a voice signal processor 7e which processes and outputs the speaker SP. These projects are commercialized by SANYO and FUJIZ in Japan.

The operation of the conventional projector configured as described above will be described with reference to FIGS. 3A and 3B.

The video signal input from the video cassette recorder or camcorder or the television receiver is processed by the signal processing unit 7 into a displayable state on the LCD panel 6b and then input to the LCD driving unit 7b. The LCD driver 7b drives the LCD panel 6b to display the output signal of the signal processor 7a on the LCD panel 6b.

At this time, the synchronization controller 7c adjusts the horizontal and vertical synchronization of the image signal displayed on the LCD panel 6b, and the light source controller 6e causes the image displayed on the LCD panel 6b to be projected on one screen. The amount of light of the light source 6e is controlled.

Therefore, the image displayed on the LCD panel 6b by the light of the appropriate intensity output from the light source 6e is connected in the project lens 6f, and then projected on one screen to be installed in front. Therefore, a predetermined image is displayed on the screen.

As described above, the prior arts have the following problems.

First, a general movie camera system equipped with only a viewfinder could monitor only one person while shooting or captured images through the viewfinder.

In other words, when the user went on a picnic outdoors, several people could not simultaneously monitor the shooting because there was no separate monitor or TV receiver in the open air.

Second, at home or at work, when several people want to watch the video taken by the movie camera system at the same time, it was inconvenient to connect the movie camera system to a television set or monitor.

Moreover, television sets or monitors could not provide a wide screen to many people because of the limited size of the screen.

Third, conventionally, in order to simultaneously view images shot by a movie camera system on a large screen, a project device had to be purchased separately and connected to the movie camera system.

Fourth, in order to view the image of the movie camera system through a large screen such as a movie screen had to be provided with a separate project device, it puts an economic burden on the user.

SUMMARY OF THE INVENTION An object of the present invention is to provide a movie camera system having an image display function capable of projecting an image on a screen in addition to a function of monitoring an image of a subject being photographed or an image of a photographed subject.

Another object of the present invention is a movie camera system having an integrated viewfinder, a camera unit and a VCR unit having an LCD panel, wherein the video signal from the camera unit or the VCR is displayed on the LCD panel of the viewfinder or externally via the LCD panel. The present invention provides a movie camera system having an image display function of projecting on a screen.

The present invention having the above object has a mode selection signal for selecting one of a video signal and a VCR video path of a camera, a function selection signal for selecting one of a viewfinder and a project function, and a camera according to a user's selection. Key signal input means for providing a record selection signal for recording the output signal of the means; Control means for generating a first control signal in accordance with the mode selection signal from the key signal input means, a second control signal in accordance with the function selection signal, and a third control signal in accordance with the recording selection signal; Camera means for photographing a subject and converting the subject into an analog composite video signal; Video signal reproducing means for reproducing the video signal recorded on the recording medium; Video signal recording means for recording the output signal of the camera means on a recording medium; First switching means for providing an output signal of a camera means to said video signal recording means when a third control signal is input from a control means; First switching means for providing the first control signal to the video signal recording means and the output signal of the camera means; Second switching means for selectively outputting one of an output signal of the camera means and an output signal of the video signal reproducing means in accordance with the first control signal; It is characterized by including display means for projecting a video signal originating from the second switching means according to the second control signal from the control means separately from the camera means or projecting on an external one screen.

Another feature of the present invention is a camera means for generating a composite image signal of the digital form by photographing the subject; Key signal input means for providing a function selection signal for performing a viewfinder or project function; Control means for providing a control signal in accordance with an output signal of the key signal input means; Memory means for storing an output signal of said camera means and converting and outputting an array of stored image signals suitable for a viewfinder or a project function according to the control signal of the control means; D / A conversion means for converting the video signal output from the memory means into an analog signal; And a display means for projecting the composite video signal output from the D / A converting means separately from the camera means or projecting on an external screen in accordance with the function control signal of the control means.

According to one aspect of the present invention for achieving the above object, the camera means photographs a subject to produce an analogue composite signal. The video signal reproducing means of the VCR section reproduces the composite video signal recorded on the recording medium.

The key signal input means performs one of a recording selection signal, a project function, and a viewfinder function for recording a video signal output from a mode selection signal camera means for selecting one of a VCR video signal and a camera video signal according to a user's selection. Outputs a function selection signal for

The control means outputs the first control signal in accordance with the mode selection signal, the second control signal in accordance with the function selection signal, and the third control signal in accordance with the recording selection signal. The first switching means provides the output signal of the camera means to the video signal recording means by the third control signal, and the video signal recording means records the video signal on the recording medium.

The second switching means selectively outputs one of the video signal of the camera means and the video signal of the video signal reproducing means by the first control signal, and the display means outputs the video signal output from the second switching means by the second control signal. Convert the array to suit the viewfinder function or the project function and either internally view it or project it on an external screen.

In addition, according to another aspect of the present invention for achieving the above object, the key signal input means according to the user's selection, the mode selection signal and the viewfinder function and the project for selecting one of the VCR video signal and the camera video signal Outputs a function selection signal for performing one of the functions.

The control means outputs the first control signal in accordance with the function selection signal and the second control signal in accordance with the mode selection signal. The camera means photographs the subject to produce a digital video signal. The video signal reproducing means reproduces the composite video signal photographed and recorded on the recording medium.

The first memory means stores the video signal of the camera means, the second memory means temporarily stores the video signal of the video signal reproducing means, and then arranges the arrangement of the stored video signals according to the first control signal for the viewfinder function or the projection function. To convert it.

The switching means selectively outputs one of the output signals of the first memory means and the second memory means in accordance with the second control signal. The digital-analog (D / A) converting means converts the output signal of the switching means into an analog signal, and the display means viewsfinder or projects the output signal of the D / A converting means in accordance with the first control signal.

In addition, according to another aspect of the present invention for achieving the above object, the camera means photographs the subject to produce an analog composite video signal. The video signal reproducing means reproduces the composite video signal photographed and recorded on the recording medium.

The key signal input means generates a mode selection signal for selecting one of a video signal of a VCR and a video signal of a camera and a function selection signal for performing one of a project function and a viewfinder function according to a user's selection.

The control means generates a first control signal in accordance with the function selection signal and a second control signal in accordance with the mode selection signal. The switching means selectively outputs one of the video signals of the camera means and the video signal reproducing means in accordance with the second control signal. The video signal processing means processes the video signal output from the switching means so that it can be displayed on the LCD panel.

The LCD driving means converts the arrangement of the video signals outputted from the video signal processing means to suit the project function or the function of the viewfinder monitoring according to the first control signal and provides the viewfinder.

At this time, the synchronizing signal generating means generates a plurality of horizontal synchronizing signals and vertical synchronizing signals for synchronizing the horizontal and vertical sides of the image signals provided to the viewfinder, and provides them to the LCD driving means. The viewfinder displays the image signal provided to the viewfinder in accordance with the first control signal on the internal LCD panel or projects the image signal through the LCD panel so as to be displayed on the external screen.

According to the above three forms, the display means, the LCD driving means and the memory means convert the arrangement of the video signals to suit the project function or the viewfinder function, respectively.

This will be described later in detail.

To help understand the present invention, the principles of the present invention will be briefly described before describing the embodiments of the present invention.

4A shows a schematic configuration of a viewfinder installed in a conventional movie camera system. According to FIG. 4A, an image signal is displayed on the LCD panel 11, and the backlight 12 can monitor the image displayed on the LCD panel 11.

This process is called a viewfinder.

In the configuration as shown in FIG. 4A, in order to project the image displayed on the LCD panel 11 on the external screen, first, since the light intensity is too weak for the backlight 12 of FIG. 4A only for the viewfinder, the backlight 12 Instead, a tube source such as halogen lamp 14 should be used as shown in FIG. 13B.

According to FIG. 4B, first, an image signal having an arrangement for the viewfinder is displayed on the LCD panel 11, and the halogen lamp 14 outputs light at an appropriate intensity.

This light is collected through the condenser lens 15 and polarized through the polarizing plate 16 to illuminate the rear surface of the LCD panel 11. At this time, the image displayed on the LCD panel 11 is projected on the external one screen 17 through the eye lens 13 by this light.

However, according to the configuration of FIG. 4B, although the image displayed on the LCD panel 11 is projected on the external screen 17 as shown, the image is displayed in an inverted state. Therefore, the user cannot see the correct image.

Therefore, in order to project an image displayed on the LCD panel 11 and view it correctly on the external screen 17, the arrangement of the image displayed on the LCD panel 11 must be converted up and down symmetrically for the viewfinder.

As described above, it is not technically difficult to change the arrangement of the image signals on the LCD panel 11 configured in the form of matrix pixels.

4c illustrates a case in which the image displayed on the LCD panel 11 is changed upside down for the project of the image. According to FIG. 4C, it can be seen that the correct image is projected on the external screen 17.

As described above, by converting the arrangement of the image signals in the LCD panel provided in the viewfinder of the conventional movie camera system, it is possible to view-find or project the image.

Hereinafter, embodiments of the present invention using the above principle will be described.

Example 1

5 is a block diagram of a movie camera system according to Embodiment 1 of the present invention. 5 shows a mode selection signal MS for selecting one of the video signals of the VCR of the video signal of the camera and a function selection signal FS for selecting one of the viewfinder function and the project function according to the user's selection. Key signal input means (50) for providing a function selection signal (RS) for recording the video signal of the camera; The first control signal CS1 is applied in accordance with the mode selection signal MS from the key signal input means 50, the second control signal CS2 is used in accordance with the function selection signal, and the third is selected in accordance with the function selection signal RS. Control means 51 for generating a control signal CS3; Camera means 52 for photographing a subject and converting the subject into an analog composite video signal; Video signal reproducing means 53 for reproducing the video signal recorded on the VCR tape; Video signal recording means (54) for recording an output signal of the camera means (52); When the third control signal CS3 is input from the control means 51, the output signal of the camera means 52 is selectively selected from the output signal of the video signal recording means 54 and the output signal of the video signal reproducing means 53. Second switching means (55b) for outputting; In accordance with the second control signal CS2 from the control means 51, the image signal output from the second switching means 55b is converted and then internally placed in a viewfinder or for projecting on an external screen. It consists of the display means 56.

The camera means 52 of FIG. 5 includes a lens unit 52a for receiving an optical image signal for a subject, as shown in FIG. 6A; A charge coupled device (CCD) image sensor 52b for converting an optical image signal output from the lens unit 52a into an electrical image signal; A sample and holder 52c for automatically gain-adjusting the output signal of the CCD image sensor 52b and then sampling-holding the gain-adjusted image signal; A time signal generator 52d for generating a time signal for synchronizing the signal processing time between the CCD image sensor 52b and the sample and holder 52c; A signal processor 52e for processing a video signal output from the sample and holder 52c to produce a composite video signal including luminance signals and color signals in the form of R (red signal), G (green signal), and b (blue signal). It consists of.

As shown in FIG. 7, the display means 56 of FIG. 5 includes an image signal processor 56a for processing the image signal output through the second switching means 55b to make it displayable; An interface unit 56b for sequentially providing an output signal of the image signal processing unit 56a to the LCD panel; A driving unit 56c for converting the second control signal of the video signal provided to the LCD panel through the interface unit 56b; A synchronization signal generator 56d for providing a plurality of horizontal and vertical synchronization signals to the driving unit 50c to synchronize the horizontal and vertical sides of the video signals to be array-converted; A direct current converter 56e for making and supplying a direct current power required for each component of the display means 56; A light amount adjusting unit 56f for generating a control signal for adjusting the light amount according to the second control signal CS2; A light source 56g for generating an adjusted amount of light in accordance with the control signal; A condenser lens 56h for connecting the light generated from the light source 56g; A first polarizing plate 56i for polarizing an optical image passing through the condenser lens; A liquid crystal display (LCD) 56j which is composed of pixels in a matrix form, is illuminated by light passing through the first polarizing plate 56i, and displays an image signal output from the interface unit 56b. ); A second polarizing plate 56k for polarizing an optical image displayed on the LCD panel 56j; In order to focus the optical image passing through the second polarizing plate 56k, the focus lens unit 56l is provided so that the distance to the LCD panel 56k can be adjusted.

In FIG. 7, reference numeral 56A corresponds to the viewfinder circuit 4 of FIG. 1 representing the conventional movie camera system, and reference numeral 56B corresponds to the viewfinder 5. However, the internal structure is completely different from them.

Here, although the LCD panel 56j is used as the display element, it is also possible to use a new display element using a modified CCD and a luminescence element.

In FIG. 7, when the image displayed on the LCD panel 56j is projected on an external screen, the focus lens units 56l may be adjusted to mutual distances for performing a zoom function to enlarge or reduce the image. It consists of two focus lenses 56l1 and 56l2, which are installed so as to be installed. In addition, the focus lens unit 56l will be described in more detail later.

In FIG. 7, the driving section 56c includes a horizontal side unidirectional register 5c1 which outputs a plurality of horizontal synchronization signals inputted from the synchronization signal generating section 56d in the order of input, as shown in FIG. 9A; A vertical-side bidirectional register 56c2 for outputting a plurality of vertical synchronization signals input from the synchronization signal generation unit 56d in the order of input or in reverse order according to the second control signal CS2; And a buffer 56c3 which buffers a plurality of vertical synchronization signals inputted from the vertical bidirectional register 56c2 and applies them as column driving signals from the uppermost column of the LCD panel 56j to the lower side in the input order. .

In FIG. 7, the interface portion 56b has a plurality of transistors as shown in FIG. 9A, and the source of each transistor is connected to the corresponding output side of the image signal processing portion 56a, and The drain is connected to the pixel of the corresponding column in each column on the upper side of the LCD panel 56j, and the gate of each transistor is connected to the corresponding output side of the horizontal side unidirectional register 56c1, and each transistor is connected to the horizontal side unidirectional register 56c1. R, G, and B type video signals driven by the horizontal synchronization signal output from the video signal processor 56a are driven from the leftmost pixel of the column to the right in the order in which they are output by the vertical synchronization signals. It consists of a sample holder 56b1 for sequentially applying.

FIG. 9B shows a schematic circuit diagram of the vertical side bidirectional register 56c2 in FIG. 8A. In FIG. 9B, SHL is a control signal for shifting the signal in the left direction, SHR is a control signal for shifting the signal in the right direction, and START PULSE (CARRY IN) is an image signal on the LCD panel 56j. It is a clock signal for indicating the start time to be displayed. In addition, CK1, CK2, and CK3 are shift clock signals, BSR1-BSR4 are unit portions of a register, and CLR is a clear signal.

In FIG. 9B, the unit portion of the vertical-side bidirectional register 56c2 includes a first inversion gate IC1 for inverting the first input signal as shown in FIG. 9C; A second inverting gate IC2 for inverting the second input signal; A third inversion gate IC3 for inverting output signals of the first inversion gate IC1 and the second inversion gate IC2; An orifice IC4 for inputting an output signal of the third inverting gate IC3 and a clear CLR signal; A fourth inverting gate IC5 for inverting the output signal of the oragate IC4 and applying the output signal together with the output signal of the third inverting gate IC3 to the oragate IC4 as one input signal; The fifth inversion gate IC6 may invert the output signal of the OR gate IC4 and output the inverted signal as the final signal.

Further, in FIG. 9B, the unit portion of the vertical-side bidirectional register 56c includes a first inversion gate IC7 for inverting the first input signal, as shown in FIG. 9B; A second inverting gate IC8 for inverting the second input signal; A third inversion gate IC9 for inverting output signals of the first inversion gate IC7 and the second inversion gate IC8; A fourth inverting gate IC11 applied as a first input signal to the first or gate IC10 for inputting the output signal of the third inverting gate IC9 and the clear signal; A sixth inversion gate IC13 for inverting the output signal of the fifth inversion gate IC12 for inverting the output signal of the first oracle IC10; A second oar gate IC14 for inputting a clear signal CSR and an output signal of the sixth inversion gate IC13 to output a final signal; The seventh inversion gate IC15 that inverts the output signal of the second orifice IC14 and applies the inverted signal together with the output signal of the sixth inversion gate IC13 as one input signal of the second orifice IC14. It can be composed of).

An operation of the movie camera system according to Embodiment 1 of the present invention will be described with reference to FIGS. 5 to 4.

In FIG. 5, the camera means 52 photographs the subject to produce a corresponding analog image signal in analog form. That is, as shown in FIG. 6, the lens unit 52a receives an optical image signal corresponding to the photographed subject, and the CCD image sensor 52b converts the optical image signal into an image signal electrically. Subsequently, the sample and holder 52c samples and holds the electrical image signal, and then simultaneously performs automatic gain adjustment.

At this time, since the 52b of the CCD image sensor processes the image signal in units of frames, the sample and holder 52c must also perform sample and holders in units of frames.

The time signal generator 52d generates and provides a time signal to the CCD image sensor 52b and the sample and holder 52c to process the signal in synchronization. In order to process an image signal in a movie camera system, the image signal must be divided into a luminance signal (Y) and a color signal (C). Accordingly, the video signal output from the sample and holder 12c is converted into a composite video signal in the form of R, G, and B, which are composed of the luminance signal Y and the color signal C through the signal processing unit 52e.

The output signal of the camera means 52 is applied to the video signal recording means 54 via the first switching means 55a when the third control signal CS3 is generated from the control means 51, and the video signal recording means ( 54) to the VCR tape.

Further, the output signal of the camera means 52 is applied to one input terminal of the second switching means 55b, and the other input terminal of the second switching means 55b is reproduced by the video signal reproduction signal 53 from the VCR tape. The video signal of the VCR is applied. By the second control signal CS2 applied from the control means 51, the second switching means 55b selects one of the output signals of the camera means 52 and the video signal reproducing means 53, and displays the display means 56. ) Is applied.

As shown in FIG. 7, the image signal processing section 56a of the display means 56 processes the input video signal to be displayed on the LCD panel 56j so that each pixel of the image is red (R) and green (G). ) And blue (B) forms and three sequential video signals V1, V2, and V3 are input to the interface unit 56b via the driving unit 56c, as shown in FIG.

If the second control signal CS2 for function selection corresponds to the viewfinder, the sequential video signals V1, V2, and V3 are applied to each source side of the sample holder 56b1 of the interface unit 56b. do.

On the other hand, the horizontal one-way register 56c1 of the driving unit 56c receives a predetermined time difference in the order of inputting the n horizontal synchronization signals X1, X2, ..., XN generated from the synchronization signal generator 56d. Output in order. This horizontal synchronization signal is applied as a drive signal to the gate of each transistor provided in the sample holder 56b1.

On the other hand, the vertical-side bidirectional register 56c2 of the driving section 56c outputs m vertical synchronization signals Y1, Y2, ..., Ym generated from the synchronization signal generating section 56d in the order of input.

Subsequently, the buffer 56C4 buffers the vertical synchronizing signals Y1, Y2, ..., Ym output from the vertical-side bidirectional register 56C2 and applies them as driving signals to the corresponding columns of the LCD panel 56j.

Since a thin film transistor (TET) is formed at the bottom of the LCD panel 56j to drive all the pixels of each column, when the corresponding vertical synchronization signal Y is input, all the pixels of the column are used to input an image signal. It becomes a driving state.

As a result, the LCD panel 56j is driven sequentially from the top column to the bottom, and each transistor of the first sample holder 56b1 is left by the horizontal synchronization signals X1, X2, ..., Xn. Since the video signals V1, V2, and V3 are turned on in order from the right to the right, the sequential video signals V1, V2, and V3 are sequentially applied from the leftmost pixel to the right direction in the vertical direction of the LCD panel 56j, and from the leftmost pixel to the horizontal direction. .

On the other hand, if the second control signal CS2 for function selection corresponds to the project, the arrangement of the image signals displayed on the LCD panel 56j should be arranged up and down symmetrically with the arrangement in the viewfinder view described above. .

Only then is the correct image projected on the external screen as described in FIGS. 4A-4C. That is, the vertical-side bidirectional register 56c2 reverses the order of inputting the vertical synchronization signals Y1, Y2, ..., Ym generated by the synchronization signal generator 56d by the second control signal CS2. Output

The reverse vertical synchronization signals Ym, Ym-1, ..., Y1 are applied to the LCD panel 56j via the buffer 56c3, and the LCD panel 56j is sequentially driven from the bottom column to the top. .

Therefore, the sequential video signals V1, V2, and V3 are sequentially applied from the bottom left column to the top in the vertical direction through the drain of each transistor, and from the leftmost column to the right in the horizontal direction as in the viewfinder. . As a result, the image displayed on the LCD panel 56j has a shape converted upside down from the image displayed in the viewfinder.

Again, in FIG. 7, the DC converter 56e converts the supplied DC power into a value suitable for each component 56a-56d and supplies it to each component 56a-56d. Meanwhile, the light amount adjusting unit 56f of FIG. 7 adjusts the amount of light generated from the light source 56g according to the second control signal CS2.

That is, if the second control signal CS2 corresponds to the viewfinder function, light of low intensity is generated from the light source 56g, and if corresponding to the project function, light of high intensity is generated from the light source 56g. . Light generated from the light source 56g illuminates the rear surface of the LCD panel 56j through the condenser lens 56h and the first polarizing plate 56j.

Therefore, when performing the viewfinder function of the display means 56, the user can view the image on the LCD panel 56j through the focus lens unit 56l and the second polarizing plate 56k.

At this time, the focus lens portion 56l is used as a conventional eye lens. When the display means 56 performs the project function, since the light of high intensity shines on the back of the LCD panel 56j, the image on the LCD panel 56j causes the second polarizing plate 56k and the focus lens part to be exposed by this light. Projected on an external screen via 56l. On the other hand, the focus lens 56l is installed so that the distance to the LCD panel 56j can be adjusted, by adjusting the distance is focused on the image projected on the external screen.

8A shows an example of focal lengths FC actually used.

Usually, FC1 is the most used among the three types of focal lengths FC1, FC2, and FC3. In addition, as shown in FIG. 7, the focus lens unit 56l includes two focus lenses installed so that the distance between them can be adjusted to perform a zoom function for zooming an image projected on one screen. It consists of parts 56l1 and 56l2.

As shown in FIG. 8A, when the second focus lens portion 56l2 is in the position shown by the solid line, the focal length is FC1. The focal length is FC2 when the second focus lens 56l2 is in the position shown by the dotted line.

Thus, the farther the distance between the first focus lens 56l1 and the second focus lens 56l2 appears, the closer the projected image appears on the screen, and the closer the distance between them appears, the farther away the image appears.

FIG. 10 corresponds to the red signal R, the green signal G and the blue signal B by the horizontal driving clock signals X1, X2, X3, ... generated from the synchronization signal generator 56d. FIG. 1 is a timing diagram illustrating a state in which the sequential video signals V1, V2, and V3 are sequentially displayed on the pixels of each column of the LCD panel 56j.

In FIG. 10, Hsync represents a column synchronization signal, DX represents a column synchronization delay signal, and H1-H320 represents the number of pixels in each column.

Hsync is generated once every time n horizontal synchronization signals are generated from the synchronization signal generator 56d. According to this embodiment, it takes about 47usec to display the video signal on 320 pixels.

FIG. 11 is a timing diagram showing a state in which columns V1-V220 are sequentially applied to vertical synchronization signals Y1, Y2, Y3, ..., Ym generated from the synchronization signal generator 56d.

In FIG. 10, Vsync represents a row synchronization signal, DX represents a row synchronization delay signal on the vertical side, and V1-V220 represents the number of pixels in each column.

According to this embodiment, it took 13.97 msec to display 220 video signals. This thermal synchronization signal Vsync is generated every frame of the screen.

Example 2

Embodiment 2 uses a frame memory to convert an arrangement of video signals to suit a project function or a viewfinder function. Memory-based technology is currently used in movie camera systems. In other words, it is a technique for converting while outputting an array of video signals stored in a frame memory.

Since this technique is a commonly used technique, detailed description thereof will be omitted. That is, Embodiment 2 is an example applied only to a camera unit of a movie camera system, and stores R, G, and B video signals in a matrix form, and converts the stored video signals according to a control signal according to a control signal. Output configuration.

FIG. 12 is a block diagram showing the configuration of the movie camera system according to the second embodiment, wherein camera means 57 for converting an R, G, B type analog video signal, which is input by photographing a subject, into a digital shape signal. ); Key signal input means (58) for providing a function selection signal for performing the view finding or projection function; Control means (59) for providing a control signal in accordance with the output signal of the key signal input means (58); Memory means (60) for storing an output signal of the camera means (57) and converting and outputting an array of video signals stored in a viewfinder or a project according to the control signal of the control means (59); D / A conversion means (61) for converting the video signal output from the memory means into an analog signal; Display means 62 for displaying the R, G, and B video signals output from the D / A converting means 61 according to the function control signal of the control means 59 or projecting them on one screen. It is composed.

In FIG. 12, the camera means 57 includes a lens portion 57a for receiving an optical image signal for a subject, as shown in FIG. 6 (b); A CCD image sensor 57b for converting the optical image signal output from the lens portion 57a into an electrical image signal; A sample and holder 57c for automatically gain adjusting the output signal of the CCD image sensor 57b and then sampling and holding the gain adjusted image signal; A time signal generator 57b for generating a time signal for synchronizing the signal processing time between the image sensor 57b and the sample and holder 57c; A signal processor 57e for processing the video signal output from the sample and holder 57c to produce R, G, and B type video signals composed of luminance signals and color signals; (Also commonly referred to as a matrix circuit.) An A / D converter 57f for converting the output signal of the signal processor 57e into a digital signal.

In addition, in FIG. 12, as shown in FIG. 12, the display means 62 processes R, G, and B image signals outputted through the D / A converting means 61 into a displayable signal. An image signal processor 62a; An interface unit 62b for sequentially providing an output signal of the image signal processing unit 62a to the LCD panel; A driving unit 62c for driving the LCD panel and the interface unit 62b so that image signals are sequentially provided to the LCD panel through the interface unit 62b; A synchronization signal generator 62d for providing a plurality of horizontal synchronization signals and vertical synchronization signals to the driving unit 62c to synchronize the horizontal and vertical sides of the video signal provided to the LCD panel; A direct current converter 62e for making and supplying a direct current power required for each aqueous element of the display means 62; A light amount adjusting unit 62f for generating an adjustment signal for adjusting the light amount appropriately for the viewfinder or the project in accordance with the function control signal from the control unit 59; A condenser lens 62h for connecting the light generated from the light source 62g for generating the amount of light adjusted in accordance with the light amount control signal; A first polarized lens 62i for polarizing the optical image passing through the condenser lens 62h; An LCD panel 62j formed of pixels in matrix form, having a rear surface illuminated by light passing through the first polarizing plate 62i, and displaying an image signal input through the interface unit 62h; When the image displayed on the LCD panel 62j is projected on the external screen, two focus lenses 6ll1 and 6ll2 are installed so that the mutual distance can be adjusted to perform a zoom function for enlarging or reducing the image. It is composed of

Also, as shown in FIG. 14, the driving unit 62c of FIG. 13 includes a horizontal side unidirectional register 62c1 which outputs a plurality of horizontal synchronization signals inputted from the synchronization signal generator 62d in the order of inputting; A vertical side unidirectional register 62c2 for outputting a plurality of vertical synchronization signals inputted from the synchronization signal generator 62d in the order of input; It consists of a buffer 62c1 which sequentially applies a plurality of vertical synchronization signals input from the vertical side bidirectional register 62c2 as column drive signals from the uppermost column of the LCD panel 62j in the downward direction in the input order.

In addition, in FIG. 13, the interface portion 62b has a plurality of transistors, and the drain of each transistor is connected to the pixel of the corresponding column in each column at the upper side of the LCD panel 62j, and the source element of each transistor is A video signal is connected to the output side of the image signal processing unit 62a, and a gate of each transistor is connected to the output side of the driving unit 62c so that each transistor is driven by a horizontal synchronization signal to be output to the image signal processing unit 6a. Is composed of one sample and holder 62b for sequentially applying from the leftmost pixel of the column driven by the vertical synchronization signal to the right direction in the order of output.

In FIG. 12, the memory means 60 includes a frame memory for storing the video signal in units of frames in accordance with the control signal. The configuration of Embodiment 2 is similar to that of Embodiment 1, but slightly different in function of each component.

The main difference is that, as described above, the arrangement conversion of the video signal is performed in the memory means 60 instead of the means 56 in the display in the first embodiment. Therefore, as shown in FIG. 14, the structure of the driving part 62c and the interface part 62b is simplified.

By way of example, in comparison with the 8a diagram showing Embodiment 1, instead of the vertical bidirectional register 52 in FIG. 9a, the vertical unidirectional register 62c2 was used. In addition, wiring is simplified. Instead, in Fig. 12, since the signal is processed in the digital form in the memory means 60, the memory means 60 must be added in order to process the image signal so that it can be displayed on the LCD panel 62j.

Since the sequential video signals V1, V2, and V3 that are continuously output from the video signal processor 62a are displayed on the LCD panel 62j, the principle of the first embodiment is the same as that of the first embodiment, and a description thereof will be omitted. In addition, since all the configuration and operation of the above-described difference is the same as the first embodiment, description thereof will be omitted.

Third Embodiment

In Embodiment 3, the memory means is used to convert the arrangement of the video signals as in Embodiment 2. The difference from Embodiment 2 is that the present invention is applied only to the VCR unit of the movie camera system. In general, in a VCR, a memory is used to realize high image quality in shift reproduction and still operation, and particularly in a SUPER-VAS method.

As shown in FIG. 15, Embodiment 3 includes video signal reproducing means 63 for reproducing a composite video signal recorded on a VCR tape in digital form of R, G, and G forms; Key signal input means 64 for providing a view-finding or projection command signal; Control means (65) for providing a control signal in accordance with the output signal of the key signal input means (64); Memory means (66) for storing the output signal of the video signal reproducing means (63) and converting the arrangement of the stored video signals in accordance with the output signal of the control means (65) to suit a viewfinder or a project; D / A converting means 67 for converting the digital video signal output from the memory means 66 into an analog signal; And a display means 68 for projecting the composite video signal output from the D / A converting means into a viewfinder or projecting on an external screen in accordance with the control signal from the control means.

Since the detailed configuration and operation of the third embodiment are the same as those of the second embodiment, description thereof is omitted.

Example 4

The fourth embodiment uses the memory means to convert the arrangement of the video signals, as in the second and third embodiments, and the difference from the second and third embodiments is not limited to the movie camera system, but the analog video signal in the analog form. Is applied to all systems that print

As shown in FIG. 16, Embodiment 4 includes: key signal input means 69 for providing a function selection signal for performing a viewfinder or project function according to a user's selection; Control means (70) for providing a control signal in accordance with the function selection signal of the key signal input means (69); Memory means 72 for storing the digital video signal output from the A / D conversion means 71 and converts the arrangement of the video signal according to the control signal output from the control means 70 to the view finder or project, and outputs it. ; D / A conversion means (73) for reconverting the digital video signal output from the memory means (72) into an analog signal; In accordance with the control signal output from the control means 70, the display means 74 for viewfinder or projecting the video signal output from the D / A conversion means 73.

Example 5

In the fifth embodiment, as in the second to fourth embodiments, the memory means is used to convert the arrangement of the video signals to suit the project function or the view-in function. A feature of Example 5 is that the present invention has been applied to the overall configuration of a movie camera system.

As shown in FIG. 17, Embodiment 5 provides a function selection signal for performing a viewfinder or project function and a mode selection signal for selecting a video signal of a camera or a VCR according to a user's selection. Key signal input means (75) for carrying out; Control means (76) for providing a first control signal for function selection and a second control signal for selection of an image signal according to the output signal of the key signal input means (75); Camera means (77) for photographing a subject and converting the subject into a digital image signal; Video signal reproducing means (78) for reproducing a composite video signal recorded on a VCR tape; First memory means (79) for storing an output signal of the camera means (77), and converting the stored video signal according to the control signal from the control means (76) so as to be suitable for a project or view finder; Second memory means (80) for storing the output signal of the video signal reproducing means (78) and for converting the arrangement of the stored video signal according to the control signal from the control means (76) so as to be suitable for a project or a viewfinder; Switching means (81) for selecting and outputting one of the output signals of the first memory means (79) and the second memory means (80) in accordance with the second control signal; D / A conversion means 82 for converting the output signal of the switching means 81 into an analog composite video signal; And a display means 83 for processing the output signal of the D / A converting means 82 in a displayable state and then projecting or viewfinder according to the first control signal.

Detailed configuration and operation of the fifth embodiment is also the same as that of the second embodiment, and thus a detailed description thereof will be omitted.

Example 6

Embodiment 6 specifically uses the viewfinder having an LCD panel for displaying an image signal and an LCD driving means for driving the LCD panel to convert the arrangement of the input image signal to be suitable for the project and the viewfinder function. Apparatus, which can be applied to any system that outputs an analog composite video signal.

Embodiment 6 includes, as shown in FIG. 18, key signal input means 84 for providing a function selection signal for performing a project or viewfinder function in accordance with a user's selection; Control means (85) for providing a control signal in accordance with the output signal of the key signal input means; Video signal processing means (86) for processing the input analog composite video signal to be displayed on an LCD panel; An LCD panel 87 formed of pixels in matrix form and displaying an output signal of the image signal processing means 86 on the LCD panel 87 or through the LCD panel 87 according to the control signal. A viewfinder 88 for projecting onto an external one screen; Synchronizing signal generating means (90) for generating a plurality of horizontal synchronizing signals and a vertical synchronizing signal for synchronizing the horizontal vertical law of the image signal displayed on the LCD panel (87); LCD driving means for converting an arrangement of video signals output from the video signal processing means 86 into a viewfinder or a project suitable by using the horizontal synchronizing signal and the vertical synchronizing signal according to the control signal from the control means 85 ( 89).

The detailed configuration and operation of the sixth embodiment are similar to those of the first embodiment, and therefore description thereof will be given.

Example 7

Example 7 is almost similar to Example 6, with the difference that the configuration is applied only to the camera portion of the movie camera system. Embodiment 7 includes key signal input means 91 for providing a function selection signal for performing a project or viewfinder function, according to the user's selection, as shown in FIG. Control means (92) for providing a control signal in accordance with the output signal of the key signal input means; Camera means (93) for photographing a subject and converting the subject into an electrical composite video signal; Video signal processing means (94) for processing a video signal output from the camera means (93) to be displayed on an LCD panel; An LCD panel 95, and according to the control signal, an LCD panel 95 for outputting an output signal of the video signal processing means 94; LCD panel 95, and according to the control signal, a view for displaying the output signal of the image signal processing means 94 on the LCD panel 95 or projecting on one screen through the LCD panel 95 Finder 96; Synchronizing signal generating means (98) for generating a plurality of horizontal synchronizing signals and vertical synchronizing signals for synchronizing the horizontal and vertical sides of the image signal displayed on the LCD panel (95); In accordance with the control signal, from the image signal processing means 94 using horizontal and vertical synchronization signals. LCD panel 95: From the image signal processing means 94 using horizontal and vertical synchronization signals according to the control signal. And LCD driving means 97 for converting the arrangement of the video signals output to the LCD panel 95 to suit the project or viewfinder function.

The detailed configuration and operation of the seventh embodiment are also almost similar to those of the first embodiment, and thus description thereof is omitted.

Example 8

Example 8 is also almost similar to the sixth and seventh embodiments, except that the configuration is applied only to the VCR portion of the movie camera system.

As shown in FIG. 20, Embodiment 8 includes: key signal input means 99 for providing a function selection signal for performing a project or viewfinder function in accordance with a user's selection; Control means (100) for providing a control signal for function selection in accordance with the function selection signal of the key signal input means (99); Video signal reproducing means 101 for reproducing the video signal recorded on the VCR tape; Video signal processing means 102 for processing the output signal of the video signal reproducing means 101 to be displayed on an LCD panel; A viewfinder (104) having an LCD panel (103) for projecting an image signal input from the image signal processing means (102) according to the control signal or projecting on one screen via the LCD panel (103); Synchronizing signal generating means (106) for generating a plurality of vertical synchronizing signals and a horizontal synchronizing signal for synchronizing the horizontal and vertical sides of the image signal displayed on the LCD panel (103); And an LCD driving means 105 for converting the arrangement of the video signals output from the video signal processing means 103 to be suitable for the performance of the project or the viewfinder function by using the vertical and horizontal synchronous signals according to the control signal.

The detailed configuration and operation of the eighth embodiment are also similar to those of the first embodiment, and thus description thereof is omitted.

Example 9

Example 9 is also almost similar to the sixth to eighth embodiments, except that the configuration is applied to the overall configuration of the movie camera system.

Embodiment 9 is a key signal input for providing a function selection signal for performing a project or viewfinder function and a mode selection signal for selecting one of a VCR video signal and a camera video signal according to a user's selection as shown in FIG. Means 107; Control means for generating a second control signal in accordance with a mode selection signal according to the function selection signal of the key signal input means (108): a camera portion (109) for photographing a subject and converting it into an electrical composite video signal; Video signal reproducing means (110) for reproducing a composite video signal recorded on a VCR tape; Switching means (111) for outputting one of the output signals of the video signal reproducing means (110) and the camera means (109) in accordance with the second control signal; Video signal processing means 112 for processing the video signal output through the switching means 111 to be displayed on the LCD panel 113; LCD panel 113, a viewfinder for projecting the image signal output from the image signal processing means 112 on the LCD panel 113 or a project on an external screen through the LCD panel 113 (114); Synchronizing signal generating means (116) for generating a plurality of vertical synchronizing signals and horizontal synchronizing signals for synchronizing the horizontal and vertical sides of the image signal displayed on the LCD panel (103); The video signal processing means 112 changes the arrangement of the video signals output on the LCD panel 113 to suit the project or viewfinder function by using the vertical synchronizing signal and the horizontal synchronizing signal according to the first control signal. LCD driving means 115.

The detailed configuration and operation of the ninth embodiment are also substantially similar to those of the first embodiment, and thus description thereof is omitted.

In Examples 1 to 9, although an LCD panel was used as the display element, it can be constructed using an element such as an EL (Electro Luminescence) element and a modified CCD.

In addition, in the embodiments of the present invention, although the VCR tape is used as the recording medium for recording the video signal, it may be recorded using another recording medium such as a compact disc.

According to the present invention as described above, the following effects can be obtained.

First, by improving the conventional view finder, the movie camera system can perform both the viewfinder function and the projection function, thereby making it possible to customize the function of the movie camera system.

Secondly, the movie camera system can project the captured images so that multiple people can monitor the images on the big screen. In particular, this project function is more advantageous outdoors when there is no television receiver or monitor.

Third, since the Movie Carrera system has a project function, it is economical because the user does not need to purchase a separate project.

Claims (6)

According to the user's selection, the mode selection signal for selecting one of the video signal and the VCR video signal of the camera, the function selection signal for selecting one of the viewfinder and the project function, and the record selection for recording the output signal of the camera means. Key signal input means (50) for providing a signal; The first control signal in accordance with the mode selection signal from the key signal input signal 50, the second control signal for selecting the viewfinder function and the project function in accordance with the function selection signal, and the third control signal in accordance with the tune selection signal. Control means 51 for generating a; Camera means 52 for photographing a subject and converting the subject into an analog composite video signal; Video signal reproducing means 53 for reproducing the video signal recorded on the recording medium; Image signal recording means (54) for recording the output signal of the camera means (52) on a recording medium; First switching means (55a) for providing an output signal of the camera means (52) to the video signal recording means (54) when a third control signal is input from the control means (51); Second switching means 55b for selectively outputting one of an output signal of the camera means 52 and an output signal of the video signal reproducing means 53 in accordance with the first control signal; Display means 56 for viewing or projecting an image signal output from the second switching means 55b according to the second control signal from the control means 51 on one external screen; Camera system. 2. The display apparatus according to claim 1, wherein the display means comprises: an image signal processor (56a) for processing the image signal output through the second switching means (55b) to make it displayable; An interface unit 56b for sequentially providing an output signal of the image signal processing unit 56a to the display element; A driving unit 56c for converting an array of video signals provided to the display element through the interface unit 56b according to the second control signal; A synchronization signal generator 56d for providing a plurality of horizontal and vertical synchronization signals to the driving unit 50c to synchronize the horizontal and vertical sides of the video signals to be array-converted; A direct current converter 56e for making and supplying a direct current power required for each component of the display means 56; A light amount adjusting unit 56f for generating a control signal for adjusting the light amount according to the second control signal; A light source 56g for generating an adjusted amount of light in accordance with the control signal; A connection lens 56h for connecting the light generated from the light source 56g; A first polarizing plate 56j for polarizing an optical image passing through the condenser lens; A display element 56i, which is composed of pixels in matrix form, is illuminated by light passing through the first polarizing plate 56j, and displays an output signal of the interface unit 56b; A second polarizing plate 56k for polarizing an optical image displayed on the display element 56i; And a focus lens unit (56l) installed so that the distance to the display element (56j) can be adjusted to focus the optical image passing through the second polarizing plate (56k). The two focus lenses of claim 2, wherein the focus lens unit 56l is provided so that the mutual distance can be adjusted to perform a zoom function when an image displayed on the display element 56j is projected on an external screen. And 56l ₁ , 56l ₂ . Camera means (57) for photographing a subject and generating a composite video signal in digital form; Key signal input means 58 for providing a function selection signal for performing a view pinter or a project function; Control means (59) for providing a control signal in accordance with the output signal of the key signal input means (58); Memory means (60) for storing an output signal of the camera means (57) and for converting and outputting an array of image signals stored in accordance with a viewfinder or a project function according to the control signal of the control means (59); D / A conversion means (61) for converting the video signal output from the memory means (60) into an analog signal; Display for projecting the composite video signal output from the D / A converting means 61 according to the viewfinder function of the control means 59 and the function control signal for selecting the project function or projecting on an external one screen And a means (62). 5. The display device according to claim 4, wherein the display unit (62) comprises: an image signal processor (62a) for processing the image signal output through the D / A converting means (61) to make a displayable signal; An interface unit 62b for sequentially providing the output signal of the image signal processing unit 62a to the one display element; A driving unit 62c for driving the display element and the interface unit 62b even if an image signal is sequentially provided to the display element through the interface unit 62b; A synchronization signal generator 62b for providing a plurality of horizontal synchronization signals and vertical synchronization signals to the driving unit 62c to synchronize the horizontal side of the image signal provided on the display element with the vertical layer; A DC converter 62e for making and supplying DC power required for each component of the display means 62; A light amount adjusting unit 62f for generating an adjustment signal for adjusting the light amount appropriately for the viewfinder function or the project function according to the control signal from the control means 59; A light source 62g for generating a controlled amount of light according to the control signal: a condenser lens 62h for condensing light generated from the light source 62g; A first polarizing lens 62i for polarizing light passing through the condenser lens 62h; A display element 62j made of pixels in matrix form and illuminated by light passing through the first polarizing plate 62i and displaying an image signal input through the interface unit 62h; A second polarizing plate 62k for polarizing light of an image displayed on the display element 62j; And a focus lens portion (62l) provided so that the distance to the display element (62j) can be adjusted to focus the optical image passing through the second polarizing plate (62k). The two focusing units of claim 5, wherein the focus lens unit 621 is provided so that the mutual distance can be adjusted to perform a zoom function when an image displayed on the display element 62j is projected on an external screen. A movie camera system featuring a lens (62l1, 62l2).