JPH0258483A - Electronic steel camera - Google Patents

Abstract

PURPOSE:To make successive photographing speed high and to attain the successive photographing following up the high speed movement of an object by recording a picture signal from one image pickup element to a fixed recording medium at a successive photographing mode, after driving the other recording medium to a next recording position while recording it, and recording the picture signal to the recording medium. CONSTITUTION:On a successive photographing mode, a switching means C to switch a picture signal from an image pickup element A to different recording media B1 to Bn in fixed order and to output alternately and recording means D1 to Dn to make the recording media B1 to Bn record are provided. Then, on the successive photographing mode, the picture signal from the one image pickup element A is switched and is recorded in the fixed recording medium B1, and after the other recording medium Bn is driven to a next recording position while recording it, the picture signal is recorded in the other recording medium Bn. Thus, successive photographing speed is made high, and the recording and the reproducing of the change, etc., of a moving object are attained.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an electronic still camera that records or records and reproduces still images.

<Prior art> For example, as seen in Japanese Patent Application Laid-Open No. 194677/1983, an optical image signal is converted into an electrical image signal using a solid-state image sensor such as a COD, and this is processed to be used in a storage medium such as a magnetic disk. Electronic still cameras that record images are known.

<Problems to be Solved by the Invention> By the way, not only with electronic still cameras but also with regard to shooting in continuous shooting mode, continuous shooting is impossible while the storage medium is being driven to the next recording position, and the continuous shooting speed is Of course there were limits. On a magnetic disk called a still video frame in an electronic still camera, one still image is recorded in analog on every track in the case of field recording and every two tracks in the case of frame recording. Similarly, it is difficult to record and reproduce still images at a continuous shooting speed that sufficiently follows the high-speed movement of the subject, since the disk cannot be photographed during the drive time.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic still camera that can increase the continuous shooting speed during limited photo opportunities, and can record and reproduce without interruption without missing changes in a moving subject.

<Means for Solving the Problems> Therefore, as shown in FIG. An image sensor A to be converted, a plurality of recording media B, -Bfi, which are provided for one image sensor A and record the image signal, and an image signal from the image sensor in the continuous shooting mode is transferred to the different recording media 81 to 81. B.

switching means C which alternately outputs output by switching in a predetermined order;
and recording means 81-D for recording manually input image signals on the recording media 81-B.

Further, in claim 2, in addition to claim 1, continuous output means E, -E for reading image information recorded on each recording medium B, .about.B, as indicated by broken lines in FIG.

, a display means F for reproducing and displaying image information, and a reproducing means G for causing the display means F to reproduce and display the image information read out from the recording medium in a predetermined order.

<Operation> In this manner, in claim 1, the image signal from one image sensor is switched and recorded on a predetermined recording medium during continuous shooting mode, and during this recording, the other recording medium is switched to the next recording position. After the image signal is driven to the maximum, the image signal is recorded on another recording medium, and a continuous shooting operation is performed.

In the second aspect of the present invention, the image information recorded on each recording medium of the first aspect is read out and reproduced and displayed on the display means in a predetermined order.

<Example> Embodiments of the present invention will be described below based on the drawings.

FIG. 2 to FIG. 6 are first diagrams corresponding to claims 1 and 2.
An example is shown.

In FIG. 2, an optical image of a subject from an optical lens 1 is formed via an aperture 2 and a half mirror 3 on the light receiving surface of a CCD 4 as an image pickup device. The CCD 4 photoelectrically converts the formed optical image and outputs an analog image signal to the signal processing circuit 5.

Further, the optical image reflected by the half mirror 3 enters the optical finder 9 via the finder optical lens 6.7 and the mirror 8.

The signal processing circuit 5, based on the image signal from the CCD 4,
Processing such as separating the color signal (more specifically, the color difference signal) and the luminance signal is performed, and the processed analog image signal is sent to the FM modulation circuit 1.
Output to 0. The FM modulation circuit IO performs FM (frequency) modulation on the input analog image signal and outputs the modulated image signal to the multiplexer 11. Multiplexer 1
4 selectively outputs the image signal to the first recording amplifier 12 or the second recording amplifier 13.

The first recording amplifier 12 amplifies the image signal and outputs it to the first recording/reproducing magnetic head 14 via the first recording/reproducing switch 15. The first recording/reproducing magnetic head 14 records the image signal on a first magnetic disk (not shown) as a recording medium. Further, the second recording amplifier 13 amplifies the image signal and outputs it to the second recording/reproducing magnetic head 16 via the second recording/reproducing switch 17 . The first recording/reproducing magnetic head 16 transfers the image signal to the second magnetic disk (as a recording medium).
(not shown). Here, the first and second recording/reproducing magnetic heads 14 and 16 constitute a recording means.

In addition, in order to reproduce the image signal recorded on the first magnetic disk, the first recording/reproducing magnetic head 14 sends the detected image signal to the selection circuit 18 via the first recording/reproducing switch 15 and the first head amplifier 19. and output it. Further, in order to reproduce the image signal recorded on the second magnetic disk, the second recording/reproducing magnetic head 16 sends the detected image signal to the selection circuit I8 via the second recording/re-switching switch 17 and the second head amplifier 19. and output it. The selection circuit 18 selects and outputs the image signals of the first and second magnetic disks to the FM demodulation circuit 21. The FM demodulation circuit 21 performs FM demodulation on the modulated image signal and outputs it to the reproduction circuit 22. The reproducing circuit 22 composes the demodulated image signal to create a video signal and outputs it to a display 23 as a display means made of liquid crystal to display an image.

Further, the system controller 24 receives a signal from the mode setting switch 25, operates according to a program based on the flowchart shown in FIG. 4, controls the multiplexer 11 during continuous shooting, and transfers the image signal to the first recording/reproducing magnetic The head 14 and the second recording/reproducing magnetic head 16 are configured to output data alternately.

Next, the appearance of the camera will be explained based on FIG. 3. A pair of spindle motors 27a and 27b for rotationally driving a magnetic disk 26 are attached to the camera body at a predetermined interval. Also, in the vicinity of each spindle motor 27a, 27b, there are first and second gear actuators 28a, 28.
Each hend actuator 28a is mounted so that it can move freely toward and away from the spindle motor 27a27b.
, 28b have first and second recording/reproducing magnetic heads 1.4.
16 are installed respectively. The hend actuators 28a and 28b are connected to the system controller 2.
The first and second recording/reproducing magnetic helads 14 . I6
It is designed to record image signals.

Here, the multiplexer 11 and the system controller 24 constitute a switching means. Further, the first and second recording/reproducing magnetic heads 14.16 and the first and second head amplifiers 19.20 constitute a reading means.

Furthermore, the selection circuit 18, the FM demodulation circuit 21, and the reproduction circuit 2
2 constitutes a reproduction means. In addition, in FIG. 3, 29a.

29b is a drive cover, and 30 is a release switch.

Next, the operation will be explained according to the flowchart in FIG. 4 with reference to FIG.

In Sl, after initializing the memory etc., frame shooting, field shooting, shooting date, etc. excluding image information, etc.
Read D and proceed to S2.

In S2, it is determined whether the mode setting switch 25 is set to continuous shooting mode, and if YES, the process advances to S3, and if NO, the routine is ended.

In S3, it is determined whether the drive selection mode is the 1-drive selection mode, the 2-drive selection mode, or the automatic selection mode, and if it is the automatic selection mode, the process advances to S4, and if it is the 2-drive selection mode, it advances to S51, and ■ Drive selection If the mode is selected, the process advances to S19.

In S4, it is determined whether the set continuous shooting speed is faster than 1/IO second. If YES, the process advances to S5; if NO, the process advances to S19.

In S5, it is determined whether the disk selection mode for starting recording is the first magnetic disk selection mode, the second f7A disk selection mode, or the automatic selection mode, and if it is the automatic selection mode, the process advances to S6, where the first magnetic disk is selected. When the mode is selected, the process proceeds to S7, and when the mode is the second magnetic disk selection mode, the process proceeds to S8.

In the automatic selection mode, it is determined in S6 which magnetic disk to start recording from, and when the first magnetic disk is determined, the process advances to S7, and when the second magnetic disk is determined, the process advances to S8.

In S7, after reading the set continuous shooting speed, S9
Proceed to.

In S9, the first and second spindle motors 27a and 27b are driven to rotate at a rotational speed corresponding to the read continuous shooting speed.

At SIO, 10 is read out to record the photographing date, etc. on the first and second magnetic disks.

In the Sll, the image signal is output to the first recording/reproducing magnetic disk 14 via the multiplexer 11 to record the image signal on a predetermined track of the first magnetic disk, and then the process proceeds to step 312.

In S12, the image signal is output to the second recording/reproducing magnetic head 16 via the multiplexer 11 to record the image signal on a predetermined track of the second magnetic disk, and then the process proceeds to 313.

At step 313, it is determined whether or not recording of the last track (for example, track 50) of the first and second magnetic disks has been completed. If YES, the routine is terminated; if NO, the routine returns to step 311.

For example, during field 'recording, as shown in FIG. recorded on disk. In this way, the CCD is attached to the first fff magnetic disk and the second magnetic disk.
The image signals from 4 are alternately field-recorded according to the photographing order.

On the other hand, when the second magnetic disk is selected in S5 or S6, the set continuous shooting speed is read in S8, and then the process advances to 314.

In S14, the first and second spindle motors 27a and 27b are driven to rotate at a rotational speed corresponding to the read continuous shooting speed.

In S15, the ID is not read in order to record the photographing date and the like on the first and second magnetic disks.

In step 316, the image signal is output to the second recording/reproducing head 16 via the multiplexer 11, and the image signal is recorded in a predetermined trunk of the second magnetic disk.
Proceed to.

In S17, the image signal is output to the first recording/reproducing magnetic disk 14 via the multiplexer 11, and the image signal is recorded on a predetermined track of the first magnetic disk, after which the process proceeds to S18.

At step 318, it is determined whether or not recording of the final 1-rank (for example, track 50) of the first and second magnetic disks has been completed.If YES, the routine is terminated, and if NO, the process returns to 316. .

For example, during field recording, the CCD 4 is
The first image signal is recorded on the second magnetic disk, and the next image signal is recorded on the first magnetic disk. In this way, the first magnetic disk and the second
Image signals from the CCD 4 are alternately field-recorded on the magnetic disk in accordance with the photographing order. For this reason, for example, during recording on the first magnetic disk, the second recording/playback head 16 can be moved to the next track on the second magnetic disk side, so continuous shooting can be performed at a higher speed than before, and the subject It is possible to follow and record the speed of the descendants.

Furthermore, in S19, the 16th n air disk or the second
Image signals are usually recorded on each track of a magnetic disk by continuous shooting.

Next, frame recording will be explained in detail with reference to the time chart of FIG. 6.

When S2 of the release switch 30 is turned on, a PC signal is output from the PG coil that detects the PG yoke positions of the first and second magnetic disks every rotation of the 6ff magnetic disk. Also, in synchronization with the PC signal, a vertical synchronization signal (
The 6th leap VP signal) is output at regular intervals (1/60 seconds). Approximately 50□8c after the release switch 30 52 is turned on, the output start point of this vertical synchronization signal is reset by the VRESET signal synchronized with the PC signal, so that the vertical synchronization signal and the PG double signal are synchronized. It has become.

Furthermore, when 32 of the release switch 30 is turned on, automatic exposure control of the diaphragm 2 is performed depending on the illuminance of the subject and the like. Also, the half mirror 3 is set to C immediately after the automatic exposure control ends.
Mirror-up moved from the optical path of CD4 to another position? 1+lI4 wholesale is made.

Then, after four cycles of the vertical synchronizing signal have elapsed from the end of output of the VRESET signal, a shutter (not shown) is opened for a predetermined time and an optical image of the subject is formed on the CCD 4, and the CCD 4 is exposed.

When the exposure is completed, field recording is performed on a predetermined track of the first magnetic disk in channel A of the first magnetic recording/reproducing head 14, and immediately after this field recording, recording is performed on the next trunk of the first magnetic disk. - Parallel recording is performed and frame recording is performed. During recording on the first magnetic disk, automatic exposure control, mirror up control, etc. are performed on the second magnetic disk side, and then frame recording is performed. In this way, frame recording is performed alternately on the first magnetic disk and the second magnetic disk.

The images recorded alternately on the first and second magnetic disks according to the photographing order are reproduced and displayed on the display 23 in the following manner.

For example, when recording starts from the first magnetic disk,
The first and second recording/reproducing selector switches 15 and 17 are controlled by the head amplifier 19 by a control signal from the system controller 24.
．． Switch to the 20 side.

After the recorded image on the first magnetic disk is first read, the recorded images on the first magnetic disk and the recorded images on the second magnetic disk are read out alternately. The read image signals are then reproduced and displayed on the display 23 alternately according to the photographing order on the first magnetic disk side and the second magnetic disk side by the reproduction circuit 22. In this way, the images recorded on the first magnetic disk and the images recorded on the second magnetic disk are reproduced and displayed on the display 23 at predetermined intervals. For this reason,
A desired still image can be created by arbitrarily selecting the most necessary image from the reproduced images, and the selection range (number) of necessary still images can also be widened.

FIG. 7 is a time chart showing a second embodiment of the present invention.

First, to briefly explain this configuration, a first CCD and a second CCD are provided, and a forelight image of the same subject is formed on the first COD and the 20th CD. Also, the first CC
A first magnetic disk and a second magnetic disk are provided on which image signals from D are selectively recorded. Also, the second
A third VA disk and a fourth magnetic disk are provided on which image signals from the CCD are selectively recorded.

Then, as shown in FIG. 7 in the continuous shooting mode, the first C
Image signals of a CD are alternately recorded on a first magnetic disk and a second magnetic disk. Further, the image signals of the second CCD are alternately recorded on the third magnetic disk and the fourth magnetic disk.

In this way, the first CCD and the second CCD can be operated independently, so that the first CCD and the second CCD can operate independently.
Recording can be performed at overlapping timings on the CD side and the second CCD side, and the continuous shooting speed can be made faster than in the first embodiment. In addition, the first CCD and the second CCD
D are operated at the same timing to record the first field image for frame recording on the magnetic disk on the first CCD side, while recording a field image adjacent to the first field image on the magnetic disk on the second CCD side. If you set it to frame recording, you can record 1 frame.
/60 seconds, allowing frame recording to be performed faster than conventional methods (1/30 seconds).

<Effects of the Invention> As explained above, the present invention has the following features in claim 1:
During continuous shooting mode, an image signal from one image sensor is recorded on a predetermined recording medium, and during this recording, another recording medium is driven to the next recording position, and then the image signal is recorded on that recording medium. As a result, the continuous shooting speed can be made faster than in the past, and continuous shooting can be performed while following the high-speed movement of the subject.

In addition, in claim 2, since the image information is successively output from the recording medium in claim 1 and reproduced and displayed on the display means in a predetermined order, it is possible to select a desired still image from the reproduced images, and also to select the desired still image. It can also be made wider.

[Brief explanation of the drawing]

Fig. 1 is a diagram corresponding to the claims of the present invention, Fig. 2 is a configuration diagram showing a first embodiment of the present invention, Fig. 3 is an external view of the same as above, Fig. 4 is a flowchart of the same as above, and Fig. 5 is a diagram of the same as above. FIG. 6 is a time chart for explaining the action, FIG. 6 is a time chart for explaining other actions of the same, and FIG. 7 is a time chart showing a second embodiment of the present invention. 4...CCD 5...Signal processing circuit 11.
...Multiplexer 14...First recording/playback magnetic head Second recording/playback magnetic head 22...Reproduction circuit display 24...System controller 16.
・・・ 23...

Claims (2)

[Claims] (1) In an electronic still camera with continuous shooting mode,
an image sensor that converts an optical image of a subject into an electrical image signal; a plurality of recording media provided for one image sensor that records the image signals; 1. An electronic still camera comprising: switching means for switching and alternately outputting a recording medium in a predetermined order; and a recording means for recording an input image signal on the recording medium. (2) The electronic still camera according to claim 1, further comprising: reading means for reading image information recorded on each recording medium; display means for reproducing and displaying the image information; An electronic still camera comprising: a reproduction means for causing a display means to reproduce and display images in a predetermined order.