JPS58108882A - Electronic camera - Google Patents

Abstract

PURPOSE:To enable one electron camera to perform sound recording by providing a stil picture camera which uses a rotary magnetic disk with a sound recording function in addition to a still picture recording function. CONSTITUTION:For sound recording, when an audio/video changeover button 19 is placed in audio mode, a changeover switch 21 is changed over to a terminal 21B, i.e. an audio process side 20 to connect microphones 16 and 16' to a magnetic head system 11A, and a speaker 18 or headphone terminal 17 is connected; and a motor controller 22 changes rotating speeds of a motor 13 so that a magnetic disk 12 has a speed of 80sec per turn and a head shifter 23 is shifted so that the magnetic head system 11A slides on the disk surface spirally in contact. Consequently, sound collected by the microphones 16 and 16' is recorded on a spiral recording track T on the magnetic disk 12.

Description

[Detailed Description of the Invention] This invention relates to an electronic camera for photographing still images,
In particular, the present invention relates to an electronic power stopper in which the above-mentioned rotating magnetic disk is used as an audio recording/reproducing disk so that audio can also be recorded and reproduced.

Cameras are highly portable and are widely used as a means of recording still images while traveling.

In addition to the above-mentioned image recording, there are many cases in which audio recording is required these days, and in that case, a separate cheap recorder is required.
etc. must be prepared.

If it were possible to record both still images and audio with one device, it would be extremely convenient for reporting meetings and the like.

The present invention was proposed in view of these circumstances,
A still image camera using a rotating magnetic disk, which has already been proposed by the applicant, has an audio recording function in addition to a still image recording function, so that the rotating magnetic disk can be used for recording still images or audio signals. The aim is to make it possible to record audio using a single electronic camera.

That is, one of the present inventions is to record still image information by means of magnetism on a magnetic disk rotating at a high speed related to the vertical synchronization signal of a television signal (in such an electronic still camera, The invention is characterized in that it is possible to record or reproduce audio signals on the disk by rotating the magnetic disk at a speed lower than the high speed. In an electronic camera, still image information is recorded by a magnetic head at a rate of one frame per concentric unit track on a magnetic disk that rotates at a high speed related to a synchronization signal. The device is characterized in that the magnetic disk is rotated at a low speed and the magnetic head is controlled so as to form a spiral magnetic track, thereby making it possible to record or reproduce audio signals on the magnetic disk. It is.

In the present invention, when recording still images, the magnetic disk is rotated at a high speed of, for example, 1/60 sec/'1 rotation, whereas when recording audio, this is done at a high speed of 8w/'1 rotation.
This is done at a low speed of about one revolution.

Moreover, when recording still images, the recording tracks on the magnetic disk are concentric tracks, but when recording audio, the magnetic head is shifted and controlled so that the recording tracks are spiral tracks. Of course, this audio recording can be performed in stereo if two audio magnets are prepared, and in this case, it may be possible to listen to it using a stereo horn.

Next, prior to a detailed explanation of the present invention, an outline of an electronic camera already proposed by the present applicant will be explained with reference to FIG.

That is, inside the camera housing 1, like a normal camera, there are a lens system 2, an iris mechanism 3, a shutter mechanism consisting of a shutter plate 4 and a shutter button 5, and a mirror 6.7.
and a viewfinder 8 are provided. moreover,
Optical sensors such as CCDs are components unique to electronic cameras.
9, a signal recording circuit 10, a motor 13 for rotating a magnetic head 11, a magnetic disk 12, etc. are provided.

In addition, the disk jacket 14 that houses the rotating magnetic disk 12 is connected to the holder 15 of the camera housing 1.
The structure is such that it can be inserted from the outside.

Then, the image information from the lens system 2 is detected by the CCD 9, and the signal recording circuit 10 records the image information as a magnetic recording signal.
The image signals are sent to the magnetic disk 11, and one image signal is recorded concentrically on the magnetic disk 12 for every l track. Note that the reproduced image of the above image can be viewed on a normal television.

Next, an embodiment of the electronic camera according to the present invention will be described with reference to FIGS. 2 and 3. In these drawings, the same members as those shown in FIG. 1 will be described with the same reference numbers.

That is, a lens barrel portion 1A is provided protruding from the front surface of the camera housing 1, and a lens system 2 and an iris 3 are attached within this barrel IA. Furthermore, microphones 16° and 16' are attached near both sides of the front surface of the housing 1. Further, a Radphone terminal 1 is attached to one side of the housing 1, and a speaker 18 and an audio A/video changeover switch button 19 are attached near both sides of the back. Further, inside the camera housing 1, an image recording system is configured by a CCD 9 that detects an image captured by the lens system 2 and converts it into an electric signal, and a video process IOA that converts the detection signal of this CCD 9 into an image recording signal. and each of the microphones 16, 16'
An audio system is constructed in which an audio process 20 is connected to the headphone terminal 17 and the speaker 18 is connected to the audio process 20.

The video process IOA and the audio process 20 are configured so that a changeover switch 21 is operated by a changeover switch button 19 to selectively send a video signal or an audio signal to the magnetic node system 11A. Note that the magnetic head system IIA is configured in a two-head system.

Further, the motor 13 is provided with a chucking mechanism at the end of its output shaft 13A, and is adapted to rotationally drive a magnetic disk 12, which will be described later.

The audio/video changeover switch button 19 includes a motor controller 22 for changing the rotation speed of the motor 13, and a head shift controller 23 for changing the tracking state of the magnetic throat IIA to be concentric or spiral. is connected.

Further, 14 is a disk jacket, inside of which a circular sheet-like magnetic disk 12 is housed, and the camera housing 1 is
The motor output shaft 13A is inserted into the disk center hole 12 by loading it into the jacket insertion portion 15 provided on the back side of the disk.
A: is inserted and engaged, and the magnetic head system IIA comes into sliding contact with the magnetic recording surface of the magnetic disk 12.

In the above configuration, when photographing a still image, when the changeover switch button 19 is switched to video mode, the motor controller 22 switches the rotational speed of the motor 13 to, for example, 1 rotation V 60 seconds, and the henodonft controller 23 The magnetic/\RAD system 11Ail is shifted to track concentrically on the magnetic disk 12, and the changeover switch 2
1 is switched to the terminal 21A side and the video processor IQA is switched to the terminal 21A side.
Connect to 6 air head system 11A. In this state, when the shutter button 24 is turned on, the magnetic disk 12
In this case, the still image signal is in the fourth track with one shot.
As shown in Figure (A), it is possible to record and photograph concentric tracks T.

On the other hand, when recording audio using the camera configured as described above, when the audio/video switching button 19 is switched to the audio mode, the selector switch 21 is switched to the terminal 21B side, that is, the audio process 20 side, and the microphones 16, 16 are switched to the audio process 20 side. The magnetic head system I\IIA is connected to the speaker 18 or the Radhorn terminal 1, and the motor controller 22 controls the rotational speed of the motor 13 by 8Qsec/.
At the same time, the head shifter 2
3, the magnetic head system IIA is switched so that it comes into sliding contact with the disk surface in a spiral manner.

As a result, when a recording button (not shown) is turned on, the sounds collected from the microphones 16 and 16' are recorded on the magnetic disk 12 as a spiral recording track T as shown in FIG. 4 (Bl).

To reproduce the audio from the magnetic disk 12, a speaker 18 or a headphone terminal 17 provided on the camera is used.
Alternatively, as shown in FIG. 5, the magnetic disk jacket 14 recorded by the camera C can be taken out and the video player 25 used as an adapter can be used for television reception. You may also listen to it through the speaker of machine 26.

Furthermore, it is convenient if the camera C is provided with a switch for switching between monaural recording and playback recording. Furthermore, as shown in FIG. 2, if a battery pack 27 is prepared and connected to the camera C, it is convenient for long plays.

As described above, in the present invention, a magnetic disk for video can be used for recording and reproducing audio signals, and a single disk can record video and record and reproduce audio.

Furthermore, if a studio-recorded magnetic disk is used, high-quality stereo monitoring becomes possible, and the camera used while traveling can be transformed into a portable recording/playback device.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view schematically showing the outline of a conventional electronic camera;
FIG. 2 is a partially transparent perspective view showing an embodiment of the present invention, FIG. 3 is a schematic cross-sectional view partially shown as a block diagram, and FIG. 4 is a recording track by the camera of the present invention. 2 is a diagram illustrating a video track, in which (A) shows a video track and (B) shows an audio track. FIG. 5 is a schematic perspective view illustrating an example of a reproduction system.

Claims (2)

[Claims] (1) In an electronic still camera that uses a magnetic node to record still image information on a magnetic disk that rotates at a high speed related to the vertical synchronization signal of a television signal, A low speed camera capable of recording or reproducing audio signals on the disk by rotating the magnetic disk. (2) An electronic camera that uses a magnetic head to record still image information for one frame per concentric unit track on a magnetic disk that rotates at a high speed related to the vertical synchronization signal of a television signal. The magnetic disk is rotated at a speed lower than the above speed, and the magnetic head is controlled so as to form a spiral magnetic track to record or reproduce an audio signal on the magnetic disk. The camera that made it possible.