JP3309587B2 - LCD integrated video camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal integrated video camera provided with two electronic viewfinders (hereinafter, referred to as EVF) of a cathode ray tube and a color liquid crystal.

[0002]

2. Description of the Related Art In recent years, video cameras have been equipped with color viewfinders of 1 type or less, and with 3 to 4 type liquid crystal monitors emphasizing visibility.

A conventional liquid crystal integrated video camera will be described below with reference to the drawings. FIG. 3 is a schematic diagram showing the front and back of a conventional liquid crystal integrated video camera. In FIG. The monitor 2 is a magnetic recording / reproducing unit for recording and reproducing video and audio by loading a tape cassette (not shown), and is connected to the liquid crystal monitor 1 by a hinge (not shown) so as to be freely opened and closed. Reference numeral 3 denotes a camera unit having a lens or the like inside, 4 denotes an EVF provided in the camera unit 3, and 5 denotes a switch that is provided near the liquid crystal monitor 1 and is turned on / off when the liquid crystal monitor 1 is opened and closed.

[0004] The operation of the conventional liquid crystal integrated video camera configured as described above will be described below.

In FIG. 3A, since the liquid crystal monitor 1 is open and the switch 5 is on, the liquid crystal monitor 1 operates and the EVF 4 does not operate. Also, E
When taking a picture by VF4, as shown in FIG.
By closing the liquid crystal monitor 1, the switch 5 turns off the liquid crystal monitor 1 and turns on the EVF 4.
When shooting in a bright place such as outdoors or when shooting a fast-moving subject, it is difficult to shoot on the LCD monitor 1 having a relatively large screen.

[0006]

However, in the above arrangement, when the same liquid crystal and the cathode ray tube display the same video signal, there is no problem in displaying the color liquid crystal as shown in FIG. However, as shown in FIG. 4 (b), the display of the cathode ray tube performs an overscan of about 10% in consideration of the variation in parts and circuits of the cathode ray tube, so that display characters 8 such as an operation status and a warning are displayed on the screen. Partly out of the way. The insertion position of the display character 8 is determined in advance with respect to the video signal, and such a problem occurs.

An object of the present invention is to solve the above-mentioned problems, and to provide a video camera integrated with a liquid crystal in which displayed characters in two EVFs are not cut off.

[0008]

In order to solve the above problems, a liquid crystal integrated video camera of the present invention comprises a first electronic viewfinder using a cathode ray tube and a second electronic viewfinder using a liquid crystal.
And a character generating means for displaying characters on the first and second viewfinders, wherein a user operates the first electronic viewfinder and the second electronic viewfinder. A first switch capable of switching between viewfinders; and a second switch for connecting a power supply to the first electronic viewfinder or the second electronic viewfinder by switching in accordance with the state of the first switch. And character control means for controlling a display position of a display character generated by the character generation means so as to correspond to one of the screen sizes of the first and second electronic viewfinders in conjunction with the state of the first switch. When,
And character mixing means for mixing character information output from the character control means into a video signal.

[0009]

With the above arrangement, the first switch detects which of the first and second EVFs is operating,
By setting such that the character position of the character generation means can be inserted into an arbitrary position of the first and second EVFs, when displaying the video signal on the first and second EVFs and displaying the characters, the Missing display characters due to changes and variations in parts can be eliminated.

[0010]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a liquid crystal integrated video camera according to this embodiment, and FIG. 2 is an EV in the embodiment.
It is a schematic diagram which shows the display state of F. 1 and 2, reference numeral 1 denotes a liquid crystal monitor, 2 denotes a magnetic recording / reproducing unit, 4 denotes a cathode ray tube EVF, 5 denotes a first switch, and 9 denotes a power supply for driving the liquid crystal monitor 1 and the EVF 4. A power supply terminal (hereinafter referred to as VCC), 10 is a second switch for switching between inputting VCC9 to the liquid crystal monitor 1 and EVF 4, 11 is a character mixing circuit, 12 is a character generation circuit, and 13 is a character control circuit. It is.

The operation of the liquid crystal integrated video camera of the present invention having the above-described structure will be described below.

First, when the user turns on the first switch 5, the second switch 10 is switched to the a side, and the VC
Power is input to the liquid crystal monitor 1 from C9, and the liquid crystal monitor 1 is activated. At the same time, the character control circuit 13
Controls the character generation circuit 12 to generate a character and also sets the display position of the character. Display characters are input from the character generation circuit 12 to the character mixing circuit 11 and mixed with the video signal input from the recording / reproducing unit 15. The video signal mixed with the display characters is input to the liquid crystal monitor 1 and displayed on the screen.

When the first switch 5 is turned off, the second switch 10 is switched to the side b, and
Power is input to the EVF 4 from 9 and the EVF 4 is activated. At the same time, the character control circuit 13 controls the character generation circuit 12 to generate a character. Since the display position of the character can be set arbitrarily, it is set at a position that does not deviate from the screen as shown in FIG. Display characters are input from the character generation circuit 12 to the character mixing circuit 11 and mixed with the video signal input from the recording / reproducing unit 15. The video signal mixed with the display characters is input to the liquid crystal monitor 1 and displayed on the screen.

As described above, according to the present embodiment, the position of the character to be displayed in the EVF can be arbitrarily set.
It is possible to prevent display characters from being missing when displayed on a small EVF.

[0016]

As described above, according to the present invention, the first electronic viewfinder using the cathode ray tube, the second electronic viewfinder using the liquid crystal, and the first and second viewfinders are provided. A video camera integrated with a liquid crystal comprising a character generating means for displaying characters, wherein
A first switch capable of switching between the electronic viewfinder and the second electronic viewfinder, and switching between the first electronic viewfinder and the second electronic viewfinder by interlocking with the state of the first switch. And a display character generated by the character generation means so as to correspond to a screen size of one of the first and second electronic viewfinders in conjunction with the state of the first switch. And a character mixing means for mixing the character information output from the character control means into the video signal, so that the character position of the character generation means can be adjusted by the first and second EVFs. By setting the video signal to be inserted at an arbitrary position, when the video signal is displayed on the first and second EVFs and character display is performed, environmental changes and parts Those having an excellent effect that it is possible to eliminate the lack of display character by variability.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a liquid crystal integrated video camera according to an embodiment of the present invention.

FIG. 2 is a view E of the liquid crystal integrated video camera in the embodiment.
Schematic diagram showing display of VF

FIG. 3 is a schematic diagram showing the front and back of a conventional liquid crystal integrated video camera.

FIG. 4 is a schematic view showing an EVF display of a conventional liquid crystal integrated video camera.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 LCD monitor 4 EVF 5 1st switch 10 2nd switch 11 Character mixing circuit 12 Character generation circuit 13 Character control circuit

Claims (1)

(57) [Claims] 1. A first electronic viewfinder using a cathode ray tube, a second electronic viewfinder using liquid crystal, and a character generating means for displaying characters on the first and second viewfinders. A video camera integrated with a liquid crystal, comprising: a first switch which allows a user to switch between the first electronic viewfinder and the second electronic viewfinder, and a state interlocked with a state of the first switch. A second switch for connecting a power supply to the first electronic viewfinder or the second electronic viewfinder by switching the first and second electronic viewfinders, and the first and second electronic viewfinders in conjunction with the state of the first switch. A character control unit for controlling a display position of a display character generated by the character generation unit so as to correspond to a size of any screen of the electronic viewfinder; A liquid crystal integrated video camera comprising: character mixing means for mixing character information output from character control means into a video signal.