JPH04363983A - Recorder - Google Patents

Abstract

PURPOSE:To simplify the switching operation of moving picture recording and still picture recording. CONSTITUTION:A user selects the moving picture or the still picture pickup by a selector switch 60. Even when the moving picture pickup is selected by the selector switch 60, an image pickup mode signal generating circuit 62 outputs a moving picture image pickup mode signal only when a strobo device 58 is turned off and outputs a still picture image pickup mode signal in other cases. A changeover switch 44 is thrown to the position of a contact (a) by the moving picture image pickup mode signal and a camera control circuit 56 operates a shutter 24 for the moving picture image pickup. The changeover switch 44 is thrown to the position of a contact (b) by the still picture image pickup mode signal and the camera control circuit 56 operates a shutter 24 for the still picture image pickup.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording device capable of recording moving images and still images on a recording medium.

0002

2. Description of the Related Art There is an increasing demand for high density recording in video tape recorders (VTRs). When the tape running speed is slowed down for high-density recording, the relative speed between the fixed head for audio recording and the magnetic tape becomes small, resulting in a problem that the reproduced sound quality deteriorates.

[0003] To solve this problem, a method has been proposed in which the track of the rotary head is made longer and a time-base compressed audio signal is recorded in the extended portion. For example, in a rotating two-head helical scan VTR, the magnetic tape was conventionally wound approximately 180 degrees around the rotating cylinder;
0+θ) degrees, and record the time-axis compressed audio PCM signal in the θ portion. FIG. 2 shows the tape running system, and FIG. 3 shows the track pattern. In Figure 2,
10 is a magnetic tape, 12 is a rotating cylinder, and 14 and 16 are magnetic heads. In FIG. 3, 18 is a video signal recording area, and 19 is an audio PCM signal recording area (shaded area). The video signal recording area 18 is the rotary cylinder 1
2, and the PCM signal recording area 19 is θ
It is a degree.

As described above, a recording method has been proposed in which a track is extended and a PCM signal is recorded in the extended portion, and as an application of this, a recording method has been proposed in which a still image is digitally recorded in the PCM signal recording area 19. There is. To record one still image, it is sufficient to use only a small number of PCM signal recording areas 19. According to this recording method, still images can be recorded on the same recording medium using the same imaging system as for video recording, which is very convenient. Furthermore, it is possible to obtain a still image reproduction signal of higher image quality than the conventional still image output obtained by stopping the magnetic tape and repeatedly reproducing the same track.

[0005]

Generally, in video shooting, a constantly lit auxiliary lighting device called a video light is sometimes used, but a shooting method using a strobe device has not been considered.

However, when recording still images with a camera-integrated VTR having a still image recording function as described above, it is convenient to be able to use a strobe device in the same way as a still camera.

[0007] An object of the present invention is to provide a recording device that solves these demands.

[0008]

[Means for Solving the Problems] A recording device according to the present invention is a recording device that is equipped with a still image recording or moving image recording selection means and is capable of selectively recording moving images and still images on a tape-shaped recording medium. The present invention is characterized in that when the connected strobe device is in an on state, the mode is switched to a still image recording mode.

[0009]

[Operation] With the above means, when the strobe device is ready for use, the still image recording mode is set regardless of the selection by the selection means. Thereby, the operation of the selection means can be omitted, and the operation of switching the photographing mode becomes simple.

0010

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a block diagram of an embodiment of the present invention. Reference numeral 20 denotes a photographic lens including a focusing lens group 20a, a zooming lens group 20b, and a correction lens group 20c. 22 is the shutter, 24 is the aperture,
26 is an image sensor that converts an optical image into an electrical signal, and 28 is a preamplifier that amplifies the output of the image sensor 26. A focus drive circuit 30 performs focusing by a motor 32.
The zoom drive circuit 34 drives the zooming lens group 20b with the motor 36, the shutter drive circuit 37 opens and closes the shutter 32, and the aperture drive circuit 38 drives the zoom lens group 20b with the motor 36. By driving the blades of the aperture 24, the preamplifier 2
The aperture value is adjusted so that the output level of No. 8 becomes a predetermined value.

42 is a camera signal processing circuit that performs camera signal processing such as gamma correction on the output of the preamplifier 28 and outputs it as a standard format video signal; 44 is connected to the a contact point when recording a video, and the b contact when recording a still image; A video/still image changeover switch connected to the contact, 46 a video recording processing circuit for recording and processing the video signal from the a contact of the switch 44, 48
50 is a rate conversion circuit that converts the output data of the A/D converter 48 into a PCM. This is a PCM conversion circuit that performs modulation.

Reference numeral 54 denotes a recording circuit consisting of a magnetic head, a magnetic tape, and a drive system for these, which outputs the output of the video recording processing circuit 46 to the video recording area 1 of the magnetic tape.
8, and the output of the PCM conversion circuit 52 is recorded in the PCM signal recording area 19.

56 is a camera control circuit that controls the whole;
8 is a strobe device, 60 is a selection switch for selecting video recording or still image recording, and 62 is a selection signal from the selection switch 60 and a strobe device 58, which will be described in detail later.
This is a still image/video shooting mode signal generation circuit that generates a still image shooting mode signal or a moving image shooting mode signal in accordance with a strobe on/off signal and a strobe charging completion signal from the flash unit. 64 is a release device that instructs to start and stop photographing (recording). The changeover switch 44 is switched by a photographing mode signal from a still image/moving image mode signal generation circuit 62. Still image/video shooting mode signal generation circuit 62
The photographing mode signal outputted by the camera control circuit 56 is also applied to the camera control circuit 56.

Next, the operation of this embodiment will be explained.

FIG. 4 shows the still image/video mode signal generation circuit 6.
2 shows an operation flowchart of No. 2. When still image photography is selected by the selection switch 60 (S1), a still image photography mode signal is output to the changeover switch 44 and camera control circuit 56 (S2). Even if video recording is selected (S
1) When the strobe device 58 is on (S3), a still image shooting mode signal is output (S2). This is because it is thought that the photographer's intention is to shoot a still image. Also, video shooting is selected (S1), and the strobe device 58
When is off (S3), a video shooting mode signal is output (S4).

The selector switch 44 is connected to an a contact in response to a moving image photographing mode signal from the photographing mode signal generating circuit 62, and is connected to a b contact in accordance with a still image photographing mode signal.

FIG. 5 shows an operational flowchart of the camera control circuit 56. When the shooting mode signal from the shooting mode signal generation circuit 62 is a video shooting mode signal (S10)
, in response to the operation of the release device 64 (S11), the shutter drive circuit 37 operates the shutter 22 for video shooting (S12). Further, the photographing mode signal generation circuit 56
When the shooting mode signal from 1 is a still image shooting mode signal (S10), in response to the operation of the release device 64 (S1
3) The shutter drive circuit 37 operates the shutter 22 for still image photography (S14). Of course, when using the strobe device 58, the strobe device 58 emits light in synchronization. In still image shooting, the rotating cylinder 12 is on standby.
also stops rotating. This prevents unnecessary power consumption.

There is a so-called continuous shooting mode, which is a shooting method in which still image shooting is carried out at regular time intervals. If this is adopted, the operation of the photographing mode signal generation circuit 62 may be changed as shown in FIG. In other words, video recording is selected (
S20), the strobe device 58 is on (S22),
Moreover, when continuous shooting mode is set (S23)
, the camera control circuit 56 is commanded to display that the strobe device 58 is not used, and the strobe device 58 does not emit light (power off, charge off, or do not apply a trigger signal) (S24, 25), and stops the strobe device 58. An image shooting mode signal is output (S21). When the continuous shooting mode is not set, the still image shooting mode signal is output as is (S21).

When video shooting is selected (S20) and the strobe device 58 is off (S22), as in FIG.
A video shooting mode signal is output (S26).

Next, the overall basic operation will be explained. As described above, when the photographing mode signal generating circuit 62 outputs the video photographing mode signal, the entire device operates in video photographing mode. That is, the changeover switch 44 is connected to the a contact point, and the camera control circuit 56 opens and closes the shutter 22 at a predetermined cycle via the shutter drive circuit 37 according to the release device 64.

The image sensor 26 converts the optical image taken by the photographing lens 20 into an electrical signal. The output of the image sensor 26 is supplied to a camera signal processing circuit 42 via a preamplifier 28.
The camera signal processing circuit 42 outputs a video signal of the subject. The aperture drive circuit 38 adjusts the opening degree of the aperture 24 via the galvanometer 40 so that the output signal of the preamplifier 28 reaches a predetermined level.

The output of the camera signal processing circuit 42 is applied to a video recording processing circuit 46 via a switch 44. The video recording processing circuit 46 records the video signal output from the camera signal processing circuit 42 and applies it to the recording circuit 54 . The recording circuit 54 records the output of the video signal processing circuit 46 in the video recording area 18 of the magnetic tape.

When the photographing mode signal generating circuit 62 outputs the still image photographing mode signal, the entire system operates in the still image photographing mode. That is, the switch 26 is connected to the b contact, the camera control circuit 56 enters the still image shutter mode, and the strobe device 58 is operated as necessary.

The camera control circuit 56 sends a control signal to the camera signal processing circuit 42 in response to the release signal from the release device 64, and the camera signal processing circuit 42 responds to the control signal to control the image captured by the image pickup device 26. outputs one field (or frame) of video signal.

The output of the camera signal processing circuit 42 is applied to an A/D converter 48 via a switch 44 and digitized. The rate conversion circuit 50 rate converts the output data of the A/D converter 48 and supplies it to the PCM conversion circuit 52, which performs PCM modulation. Recording circuit 54
records the output of the PCM conversion circuit 52 in the PCM signal recording area 19 of the magnetic tape.

It goes without saying that the strobe device 58 may be of a built-in type or an external type.

[0028]

As can be easily understood from the above description, according to the present invention, the photographing mode is also switched by turning on/off the strobe device, which simplifies the operation and reduces wasteful power consumption.

[Brief explanation of the drawing]

FIG. 1 is a configuration block diagram of an embodiment of the present invention.

FIG. 2 is a plan view of the tape running system.

FIG. 3 is a track pattern of the magnetic tape 10.

FIG. 4 is an operation flowchart of the mode signal generation circuit 62.

FIG. 5 is an operation flowchart of the camera control circuit 56.

FIG. 6 is another operation flowchart of the mode signal generation circuit 62.

[Explanation of symbols]

10: Magnetic tape 12: Rotating cylinder 14,1
6: Magnetic head 18: Video signal recording area 19:
PCM signal recording area 20: Photographing lens 20a:
Focusing lens group 20b: Zooming lens group 20c: Correction lens group

Claims (1)

[Claims] Claim 1: A recording device comprising still image recording or moving image recording selection means and capable of selectively recording moving images and still images on a tape-shaped recording medium, the recording device being capable of selectively recording moving images and still images on a tape-shaped recording medium, the recording device comprising: A recording device characterized in that the mode is switched to a still image recording mode.