JP3586927B2 - Liquid crystal integrated magnetic recording / reproducing device - Google Patents

Description

[0001]
[Industrial applications]
The present invention uses a video camera and video signals from the video camera on a magnetic tape by switching and using two different types of electronic viewfinders according to usage conditions, and playing back the video signal while checking the video signal under each usage condition. The present invention relates to a liquid crystal integrated magnetic recording / reproducing apparatus capable of reproducing, and more particularly to a liquid crystal integrated magnetic recording / reproducing apparatus using a liquid crystal monitor on a mechanical setup.
[0002]
[Prior art]
In recent years, a camera-integrated magnetic recording / reproducing apparatus (VTR) has been equipped with a conventional electronic viewfinder (EVF) that is small and can be used for peeking, and a small liquid crystal monitor of about 3 to 4 types. Some are available for switching.
[0003]
A conventional liquid crystal integrated magnetic recording / reproducing apparatus (VTR) will be described below. 3A and 3B are external views of a conventional camera-integrated VTR. In FIG. 3A, reference numeral 1 denotes a lens unit of a camera-integrated VTR. Reference numeral 2 denotes a main body of the camera-integrated VTR. Reference numeral 3 denotes a camera set-up unit for attaching a magnetic tape to the camera-integrated VTR. Reference numeral 4 denotes a peeping type electronic viewfinder (EVF). In FIG. 3B, reference numeral 6 denotes the above-described magnetic tape cassette.
[0004]
The operation of the camera-integrated VTR configured as described above will be described below. First, when recording / reproducing, the camera setup unit 3 of the camera-integrated VTR 2 is opened, the magnetic tape cassette 6 is mounted on the camera setup unit 3, and the camera setup unit 3 is closed to complete the mounting on the mechanical unit. Recording and reproduction are performed on the tape cassette 6.
[0005]
[Problems to be solved by the invention]
However, in the liquid crystal integrated VTR in which the second liquid crystal monitor is mounted on the set-up of the conventional camera integrated VTR, the magnetic tape cassette can be easily attached and detached in the conventional camera integrated VTR. In the above-mentioned two liquid crystal integrated type VTRs equipped with a finder, since a liquid crystal monitor is formed on the set-up section, a problem occurs that an obstacle is caused when the magnetic tape cassette is detached.
[0006]
SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and a liquid crystal integrated magnetic recording that can prevent a liquid crystal monitor above a cassette setup section from coming into contact with a setup section when a magnetic tape cassette is detached. It is an object to provide a playback device .
[0007]
[Means for Solving the Problems]
In order to achieve this object, a liquid crystal integrated magnetic recording / reproducing apparatus according to the present invention comprises a camera setup section to which a tape cassette can be mounted, two electronic viewfinders, and a camera setup section of the two electronic viewfinders. A first switch for switching the power of the two electronic viewfinders in conjunction with the opening and closing of one of the electronic viewfinders provided on the camera, and a power switch when the electronic viewfinder provided on the camera set-up section is opened by the first switch. When the power is supplied, the first switch can be switched to the first state; when the power is not supplied in the closed state, the switch can be switched to the second switch; A third switch, and a system control microcomputer connected to the third switch. The microcomputer controls the power setup unit to rise when the second switch is switched to the first state and the third switch is switched to a state of connecting to the second switch. have.
[0008]
[Action]
According to this configuration, it is possible to improve that the liquid crystal monitor provided in the liquid crystal integrated type VTR becomes an obstacle and cannot be set up, and it is possible to effectively operate such that the energization of the liquid crystal monitor indicates that the set up is possible. .
[0009]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In FIG. 1, components having the same reference numerals as those of the above-described conventional technology have the same functions, and the description thereof will be omitted. Reference numeral 7 denotes a control switch (hereinafter referred to as an EJECT switch) for taking out the magnetic tape cassette mounted on the cassette setup unit 3. Reference numeral 8 denotes a movable part of the liquid crystal monitor 9.
[0010]
The operation of the liquid crystal integrated VTR configured as described above will be described with reference to FIG.
[0011]
First, an EVF circuit 10 constituting the EVF section 4 and a monitor circuit 11 constituting the liquid crystal monitor section 9 are provided, and an EVF / monitor switching SW 12 provided in the movable section 8 switches and supplies a power supply voltage output from the power supply 13 to each of them. . Further, the EJECT inhibit SW 15 is operated in conjunction with the switch 12. The EJECT switch 7 is connected to the system control microcomputer 14 and to the EJECT inhibit SW 15 in series.
[0012]
When shooting using the EVF 4, the monitor unit 9 is closed, and the EVF / monitor changeover switch 12 provided on the movable unit 8 is connected to the a side to supply the power supply voltage of the power supply 13 to the EVF circuit 10. . At this time, the EJECT inhibit SW 15 is switched to the open terminal side, and the EJECT SW 7 is configured to be in the open state by the EJECT inhibit SW 15. Even if the EJECT SW 7 is operated, the EJECT operation is not accepted by the system control microcomputer 14. Part 3 does not rise. In the case of photographing using the liquid crystal monitor section 9, the EVF / monitor switch SW12 provided on the movable section 8 is connected to the b side by rotating the liquid crystal monitor section 9 to open, so that the monitor circuit 11 is connected. The power supply voltage of the power supply 13 is supplied, and the liquid crystal monitor 9 can be used instead of the EVF. Here EJECT prohibited SW15 becomes a state of being connected to the ground terminal, EJECT SW7 is Ri Do can be switched to the ground state and the EJECT SW7 is grounded, the system control microcomputer 14 accepts the cassette-up unit 3 is raised . The EJECT SW 7 can be activated / deactivated at an arbitrary angle of the liquid crystal monitor 9 so that the liquid crystal monitor 9 does not hit the liquid crystal monitor 9 even when the set-up unit 3 is raised. The EJECT SW 7 can be operated while power is supplied, and the liquid crystal monitor 9 can be used as a pilot lamp .
[0013]
【The invention's effect】
As described above, the present invention provides an easy-to-use liquid crystal integrated VTR equipped with an electronic viewfinder that can be used in two different ways, with a small direct-view type liquid crystal monitor arranged above the camera setup unit. This makes it possible to effectively use the EJECT function and easily use the electronic viewfinder corresponding to the shooting scene.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a configuration of a liquid crystal integrated magnetic recording / reproducing apparatus according to an embodiment of the present invention. FIG. 2 is a block diagram of an embodiment of the present invention. FIG. External view of [Description of reference numerals]
1 Lens unit 2 Camera integrated VTR
3 Set-up unit 4 EVF
7 EJECT SW
8 movable unit 9 liquid crystal monitor unit 10 EVF circuit 11 monitor circuit 12 EVF / monitor switching SW
13 Power supply 14 Syscon microcomputer 15 EJECT inhibit SW

Claims (1)

A camera set-up unit to which a tape cassette can be attached, two electronic viewfinders, and one of the two electronic viewfinders, the two electronic viewfinders being linked to the opening and closing of one electronic viewfinder provided on the camera setup unit. A first switch for switching the power of the viewfinder, and an electronic viewfinder provided on the camera set-up unit by the first switch in a first state when power is supplied in an open state, and in a closed state when power is supplied. A second switch that can be switched to a second state when power is not supplied, a third switch that can be switched to a state to be connected to or not connected to the second switch, and a connection to the third switch And a system control microcomputer that performs the operation when the second switch is in the second position. Is switched to the state, and when said third switch is switched to a state that connects to the second switch, integrated LCD magnetic recording and reproducing apparatus, characterized by controlling so as to increase the cassette-up unit.

Images