JPS62290271A - Still video camera with reproducing function - Google Patents

Abstract

PURPOSE:To prevent a mis-operation from being generated, by providing a display means which displays a reproduction mode within a finder field at a reproduction mode. CONSTITUTION:A release button 17 is used in a photographing and recording operation, and also, in a reproducing operation commonly. Therefore, the display means to recognize whether the operation of the button 17 is for the photographing and recording operation, or for the reproducing operation, by a photographer, is provided. In the display means, a light emitting diode 19 as an in-finder display is provided, and the light emitting diode 19 is lightened by a system controller 16 at the time of setting a recording and reproducing mode switch 18 positioned at the reproduction mode. In this way, an alarm for the forgetting of the operation of the button 18 is issued, thereby, a mis- photographing operation can be prevented.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention - Field of Industrial Application - The present invention relates to a methyl video camera with a playback function for recording still images on a magnetic disk and playing back the recorded images.

Background of the Invention - A still video camera uses a magnetic circle (generally a small floppy disk) and a magnetic head instead of film as a record carrier in a general still camera, and uses a magnetic head to collect image information from a subject through an optical system. The light is received by the photoelectric conversion surface of the image sensor, and the signal read out from the image sensor pixel by pixel is concentrically recorded on a magnetic disk with one image per track by sending the magnetic head one track at a time. A still image is displayed on a display device such as a television by reproducing the signal read from the required track position by feeding one track at a time.

Such still video cameras do not have a playback function themselves, but either transfer the IM'je recorded floppy disk to a player and play it back on the player, or use the camera's magnetic head as the recording/playback head to play the floppy disk. A method has been proposed in which the device is attached to the camera and the playback output is obtained directly from the nuclear camera or from a playback adapter.

-Problems to be Solved by the Invention- Conventional still video cameras with a playback function are easier to use than those without a playback function, such as eliminating the need to transfer floppy disks, etc. As the functions of the camera itself are expanded, there is a problem in that not only the number of playback processing circuits increases, but also the number of operation switches such as function changeover switches becomes too large.

Therefore, it is conceivable to make the operation switch double as multiple at@ switches, but this increases the possibility of erroneous operation.1 For example, if the operation of moving the magnetic head during playback is also used as the release button operation, the switch The difference between the operation of moving the magnetic head one track for playback and the operation of moving the magnetic head one track after taking a picture becomes clear. However, it is easy to make a photographing error in which only the magnetic head is actually being moved. In particular, the above-mentioned photographic errors are likely to occur in methyl video cameras that have mechanical shutters with low operating noise and electronic shutter-type still video cameras that have a shutter mechanism that is controlled electronically on the image pickup device side.

SUMMARY OF THE INVENTION An object of the present invention is to provide a still video camera in which a release button is also used as a playback operation switch, which prevents operational errors from occurring.

-Means for Solving the Problems- In order to achieve the above-mentioned object, the present invention provides a recorder fE that records a photographed image from an optical system as a still image signal on a magnetic disk, and a recording device fE that records an image signal from this magnetic disk. In a still video camera equipped with a playback function for playing back, and a release button that also serves as a recording operation for photographing a subject, a recording operation using the recording function, and a playback operation using the playback function after this recording, playback on the playback device fl. When in mode,
It is equipped with a display means for displaying the reproduction mode within the field of view of the finder.

One Embodiment - The figure is a block diagram of a still video camera with a playback function showing one embodiment of the present invention. The optical system is the same as a general single-lens reflex camera except that the image pickup device (COD, etc.) 1 is used as the imaging surface instead of film, and includes a lens 2, an aperture 3, a mirror 4, a shutter 5, a screen 6, and a pentameter. prism 7
and an eyepiece lens 8 to display the image of the object within the viewing field and to flip up the mirror 4 and open the shutter 5 during exposure.

In the recording mode, the image signal read from the image sensor 1 is applied to the recording/reproducing head 10 as a recording'-π stream through the recording processing circuit 9 which performs signal processing such as color signal separation and FM conversion 2118I. During recording and reproduction, the drive 10 is trunked in the radial direction of the floppy disk 13 by a moving mechanism 11 and a stepping morph 12, and records a field image signal or a frame image signal on each track of the floppy disk 13. Floppy disk 13 is motor 1
4 to rotate at a constant speed.

In the playback mode, the image signal read from the floppy disk 13 to the recording/playback head 10 is taken out as a playback output via a playback processing circuit 15 that performs FM demodulation, playback signal processing, and encoding into a television signal.

Signals necessary for the control and processing of the optical system, recording system, and reproduction system as described above are provided by a system controller 16 made of a microcomputer or the like. That is, the system controller 16 controls the raising of the mirror 4 and the shutter release 5 (or the electronic shutter of the image sensor 1) when the photographer visually observes the subject image within the field of view of the finder and operates the release button 17. floppy disk 13
An image signal is recorded on one track of
Or move 2 tracks (frame record Q). and,
During playback, the recording/playback mode switch 18 is operated to the playback side, and each time the release button 17 is operated, the RAD 10 is moved one track at a time to the recording/playback mode, thereby processing the playback output of the image signal recorded on any track. circuit 15
Get from.

Here, the release button 17 is used for both shooting and recording operations and playback operations to reduce the number of operation switches.

For this reason, a display means is provided that allows the photographer to recognize whether the operation of the release button 17 is a shooting/recording operation or a playback operation. As shown in the figure, this display means is provided with a light emitting diode 19 as a display in the viewfinder, and the light emitting diode 19 is turned on by the system controller 16 when the recording and reproducing mode switch 18 is in the reproducing mode. With this display means, if the photographer attempts to take a picture while operating the recording/playback mode switch 18 to the playback mode side, a display in the viewfinder will inform that the user is currently in the playback mode, and will warn him/her if he/she forgets to operate the switch 18, thereby causing a shooting error. prevent.

Note that the display means in the embodiments may be of a type that can display on the viewfinder that the user is in playback mode, so that the photographer can be notified by looking through the viewfinder when taking a picture, instead of displaying in the viewfinder using a light emitting diode. The same effect can be obtained by keeping the mirror 4 raised or keeping the aperture 3 closed in the playback mode so that the subject image is not displayed in the finder.

Effects of the Invention As is clear from the above description, the present invention provides a still video camera in which the release button is used for both shooting and recording operations and playback operations. Since the display means is provided, it is possible to inform whether the camera is in recording mode or playback mode by looking through the finder when taking a picture, which has the effect of reliably preventing mistakes in taking pictures due to forgetting to switch the mode, and reducing the number of operation switches.

[Brief explanation of the drawing]

The drawing is a block diagram of a still video camera with a playback function showing an embodiment of the present invention. l...Image sensor, 3...Aperture, 4...Mirror, 5
...Shutter, 8...Eyepiece. 9... Recording processing circuit. DESCRIPTION OF SYMBOLS 10... Recording/playback head, 13... Floppy disk, 15... Playback processing circuit, 16... System controller, 17... Release button, 18... Recording/playback mode switch, 19... light emitting diode.

Claims (1)

[Scope of Claims] 1) A recording function for recording a photographed image from an optical system as a still image signal on a magnetic disk, a reproduction function for reproducing an image signal from this magnetic disk, and a recording function for photographing a subject and recording by the recording function. In a still video camera equipped with a release button that is used both for operation and playback operation using the playback function after recording, display means displays the playback mode within the field of view of the finder when the playback mode is set to the playback function. A still video camera with a playback function.