JPH0713329Y2 - Electronic still camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an electronic still camera.

[Prior Art and its Problems] Conventional electronic still cameras are generally dedicated to recording, but in order to judge the quality of recorded images and leave only the necessary ones, a playback circuit and LCD ( Some have a monitor such as a liquid crystal display panel).

However, this type of electronic still camera is not configured to reproduce the recorded image captured immediately before.

[Object of the Invention] The present invention has been made in view of the above circumstances, and it is possible to reproduce an arbitrary recorded image and, when switching to the reproduction mode, to reproduce from the first recorded image taken in the recording mode. It is an object of the present invention to provide an electronic still camera according to the above.

[Summary of the Invention] The present invention is an electronic still camera equipped with a recording and reproducing function, and when a recording mode is designated and shooting is performed, a recording area of a recording medium in which a first captured image is recorded. A storage means for storing the NO. Is provided, and when the mode is switched from the recording mode to the reproduction mode, the recorded image in the storage area NO. Stored in the storage means is reproduced first. It is what

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to the drawings. First, the overall structure of the present invention will be described with reference to FIG. In the figure, reference numeral 11 denotes a timing signal generation circuit, which generates various timing signals using the crystal oscillator 12 and outputs them to the system control unit 13 and other circuit units. Further, a main mode switch 14, a shutter mode switch 15, a shutter switch 16, and track control switches 17a and 17b are connected to the system control unit 13. The main mode switch 14 is constituted by, for example, a rotary switch, and switches and designates each mode of recording, reproducing, erasing I and erasing II. The erasing mode I is a mode for erasing image information recorded on a magnetic disk, which will be described later, in units of one track (one sheet), and the erasing mode II is a mode for erasing a recorded image on all tracks. The shutter mode switch 15 switches and designates a mode in which one photograph is taken one by one (single) mode and a continuous shooting mode. The shutter switch 16 is composed of two switches SW1 and SW2. SW1 is turned on when the shutter button is pushed halfway, and SW2 is turned on when the shutter button is pushed all the way. The shutter button also serves as an erase button, and in the erase mode, the ON signal of the switch SW2 is used as an erase command.
The track control switches 17a and 17b move the designated recording track of the magnetic disk forward by one track,
This is a switch for returning to the previous track. In addition, the detection signal of the AE (automatic exposure) sensor 18 is input to the system control unit 13 via the AE circuit 19, and the detection signal of the remote control sensor 21 is input via the remote control reception unit 22. A remote controller for inputting an optical signal to the remote controller sensor 21 is configured, for example, as shown in FIG. That is, the remote controller 20 shown in FIG. 2 has a ten-key 201 for instructing the track No. and an enter key 20 for instructing data input.
2. A recording key 203 for instructing a shutter operation, a track control switch 204 for shifting a recording track, and a shutter / control switch 205 for instructing a slow speed mode of the shutter operation are provided. This shutter / control switch 205
Has "1" and "2" modes. In the "1" mode, the shutter operates immediately when the recording key 203 is operated,
In the "2" mode, when the recording key 203 is operated, the shutter operation is delayed for a predetermined time. This delay mode is used when the operator of the remote controller himself / herself becomes the subject and when it is troublesome to photograph the state of operating the remote controller.

Further, the memory 10 is connected to the system control unit 13 in FIG. The memory 10 stores a flag for storing various modes, a tester for storing the track No. designated by the remote controller 20, and a register for storing the initial track No. when switching from another mode such as the recording mode to the reproduction mode. Etc. are provided.

Then, the system control unit 13 gives a control command to the servo control unit 23 in response to an operation of each switch on the camera body side or an instruction from the remote controller 20, and the spindle motor 24
The print head 26 is driven and controlled, and the print head 26 is moved by giving a control command to the head moving mechanism 25. The spindle motor 24 rotationally drives the magnetic disk 27 mounted on the camera body (not shown) according to a control command from the servo control unit 23. This magnetic disk 27 has 50 tracks capable of recording image data for one field of an NTSC television signal. In the case of field recording, it is possible to write image data equivalent to 50 pieces of silver salt film, for example. It is possible. In this case, the head moving mechanism section 25 receives a command from the system control section 13 and controls the movement of the recording head 26 so as to write image data for one field (one screen) on one track. The head moving mechanism section 25 is provided with a first track detection switch 25s for detecting that the recording head 26 has moved to the first track,
The detection signal is sent to the system control unit 13 to preset the track counter provided in the system control unit 13 to "1". And, in the mounting portion of the magnetic disk 27, there are provided a disk detection switch 28 for detecting the presence / absence of disk installation and a claw detection switch 29 for judging the presence / absence of a claw provided in the cassette for storing the magnetic disk 27, and the detection signal thereof. Is sent to the system controller 13. The system control unit 13 determines whether or not information can be written and erased from the magnetic disk 27 based on the detection signal from the claw detection switch 29.

Further, an LCD (Liquid Crystal Display Panel) 30 is connected to the system control unit 13. On the LCD 30, as shown in detail in FIG. 3, for example, a numerical / character display section 301, R (for displaying a track number, an error, an open, etc., which is composed of a 4-digit day-shaped segment, is displayed. There are provided a main mode display section 302 for displaying a recording mode, a P (reproduction) mode, and an E (erasing) mode, and a shutter mode display section 303 for displaying an S (single) mode or a C (continuous shooting) mode.

Further, in FIG. 1, reference numeral 31 is an image pickup lens, and the image pickup lens 31 forms an image of external incident light through a diaphragm 32 and a shutter 33 on a solid-state image pickup device 34 including a CCD, a MOS transistor or the like. The diaphragm 32 and the shutter 33 are driven by a diaphragm drive circuit 35 and a shutter drive circuit 36 which operate based on a command from the system control unit 13, respectively. Also,
The image sensor 34 is driven by a driver 37 that operates according to the timing signal from the timing signal generation circuit 11. Then, the video signal output from the image pickup device 34 is sent to the video signal processing circuit 38. The video signal processing circuit 38 separates the video signal from the image pickup device 34 into a luminance signal Y + S including a synchronization signal and color difference signals RY and BY, and inputs the luminance signal Y + S to the luminance signal processing circuit 39. The color difference signals RY and BY are input to the color difference signal processing circuit 40. The luminance signal processing circuit 39 converts the luminance signal Y + S into an FM signal Y _FM and outputs the FM signal Y _FM to the mixing circuit 41.
After line-sequentializing the color difference signals RY and BY, FM signal C _FM
And output to the mixing circuit 41. This mixing circuit 41 is
The output signal Y _FM of the luminance signal processing circuit 39 and the output signal C _FM of the color difference signal processing circuit 40 are mixed and output to the recording / erasing switching circuit 42. The recording / erasing switching circuit 42 selects the output signal of the mixing circuit 41 or the erasing signal from the erasing signal source 43 in accordance with the switching signal from the system control unit 13 and, via the recording amplifier 44 and the recording / reproducing switching circuit 45. Recording head
Output to 26. The recording head 26 writes an image signal on the magnetic disk 27 or erases a recording signal. The recording / reproducing switching circuit 45 selects the recording amplifier 44 side or the reproducing amplifier 46 side in accordance with a command from the system control unit 13.

Then, in the reproduction mode, the image signal recorded on the magnetic disk 27 is reproduced by the recording head 26 and sent to the reproduction amplifier 46 via the recording / reproduction switching circuit 45. The output signal of the reproduction amplifier 46 is sent to the YC separation circuit 47 and separated into a luminance FM signal Y _FM and a color FM signal C _FM ,
The FM signal Y _FM is sent to the luminance signal demodulation circuit 48, and the color FM signal C _FM is sent to the system controller 13 and the color demodulation circuit 49. The luminance signal demodulation circuit 48 demodulates the luminance signal Y + S from the luminance FM signal Y _FM and inputs it to the encoder 50, and the color demodulation circuit 49 outputs the color difference FM signal C.
Encoder 50 by demodulating color difference signals RY and BY from _FM
To enter. The encoder 50 is a luminance signal demodulation circuit 48
The luminance signal Y + S demodulated by and the color difference signals RY and BY demodulated by the color demodulation circuit 49 are encoded,
Output to superimpose processing circuit 51. The superimpose processing circuit 51 responds to the signal from the encoder 50 by selecting the selected track N sent from the system control unit 13.
O. is combined and output to an external circuit via the output switching circuit 52 and the external output terminal 53. A monitor such as a TV receiver or a video printer is connected to the external output terminal 53. The output switching circuit 52 is controlled by the system control unit 13 and selects the output signal of the superimpose processing circuit 51 during the normal reproducing operation, but the arbitrary track NO. During the research, it is switched to the ground line side and the monitor display is kept in the black level state. The color FM signal C _FM sent to the system control unit 13 is used for empty track detection in an empty track search process and a local search process described later.

Next, the operation of the above embodiment will be described. When using the camera, the user first specifies the operation mode by switching the main mode switch 14 from the power-off state to the desired mode position, and then performs the switch operation according to the operation mode. That is, if you want to take a picture, specify the recording mode with the main mode switch 14 and the single mode or continuous shooting mode with the shutter mode switch 15, and then point the camera at the subject and operate the shutter button. To do. If you want to play the image recorded on the magnetic disk 27, use the main mode switch.
The playback mode is designated by 14 and the track number on which the image to be played is recorded is designated by the track control switches 17a, 17b or the remote controller 20. Further, when it is desired to erase the recorded image on the magnetic disk 27, the erase mode I or the erase mode II is designated by the main mode switch 14, and then the shutter button is operated.

Then, according to the above-mentioned various key operations, FIGS.
The processing shown in the flowchart in the figure is executed. That is, when the desired operation mode is designated by the main mode switch 14, the power is first turned on, and the system control unit 13 executes the processing shown in the flowchart of FIG. When the power is turned on, first, as shown in step A1 in FIG. 4, initialization processing is performed in the system controller 13, that is, various flags in the memory 10 storing mode information and the like, clearing of register contents, and recording. head
Processing such as movement of 26 tracks to the first track is performed. In this case, the register for storing the initial track No. for the reproduction mode in the memory 10 is preset to "1". Next, in step A2, reading for the key input is performed. Then, as shown in step A3, it is determined whether or not the magnetic disk 27 is mounted based on the detection signal of the disk detection switch 28.If the magnetic disk 27 is not mounted, the process proceeds to step A4 and the LCD 30 is displayed. Open (OPE
N) Make a display to inform the user that the magnetic disk 27 is not mounted. Then, in step A5, it is checked whether or not the magnetic disk 27 is mounted. If the magnetic disk 27 is not mounted, the process returns to step A4 and the open display is continued. When the magnetic disk 27 is mounted in this state, the process proceeds from step A5 to step A6, in which the system controller 13 issues a drive command to the servo controller 23 to rotationally drive the spindle motor 24 at a predetermined speed. And
At step A7, the system controller 13 gives a control command to the head moving mechanism 25 to move the recording head 26 to the first track of the magnetic disk 27. The fact that the recording head 26 has moved to the first track means that the first track detection switch 25
Detect by s. Then, in step A8, it is determined from the set state of the main mode switch 14 whether or not the recording mode is set.

On the other hand, if it is determined in step A3 that the magnetic disk 27 is mounted, the process proceeds to step A8 and a process of determining whether or not it is the recording mode is performed. This step
If it is determined in A8 that the mode is the recording mode, the recording mode process (FIG. 7), which will be described in detail later, is executed. If it is determined that the mode is not the recording mode, the process proceeds to step A9 to check whether the mode is the reproduction mode. Determine. If it is determined in step A9 that the mode is the reproduction mode, the process of the reproduction mode (FIG. 10), which will be described in detail later, is executed. If it is determined that the mode is not the reproduction mode, the process proceeds to step A10 to erase mode I. Or not. If the erase mode I is determined in step A10, the erase mode I process (FIG. 11), which will be described in detail later, is executed to erase the erase mode I.
If not, erase mode will be described in detail later
Perform the process II (Fig. 12).

Next, the above recording process, reproduction process, and erasing process (erasing mode I
The details of the erase mode II) will be described.

First, the operation of recording a captured image on the magnetic disk 27 will be described with reference to the flowchart of FIG. Proceeding from step A8 in FIG. 4 to the recording mode process flow in FIG. 7, in step D01, the spindle motor 2
4 is turned on, and the empty track search process shown in step D02 is executed. In this empty track search process, as shown in detail in FIG. 5, first, in step B1, the recording / reproducing switching circuit 45 is switched to the reproducing amplifier 46 and the reproducing circuit system is turned on. Next, in step B2, it is judged whether or not the currently designated track is an empty track (YC separation circuit 47
(If there is no color FM signal C _FM from the blank track), if it is not a blank track, the recording head 26 is advanced one track in step B3, and then the process returns to step B2. Thereafter, the operations of steps B2 and B3 are repeated to advance the recording head 26 to the position of the empty track, and the empty track search process is completed.

Then, in step D1 of FIG. 7, the recording / reproducing switching circuit 45 is switched to the recording amplifier 44 side to turn off the reproducing circuit system and the spindle motor 24. Next, after reading the key input in step D2, the process proceeds to step D3 to determine whether or not it is the recording mode. If it is not the recording mode, the process returns to step A3 in FIG.
At D4, it is determined whether or not the magnetic disk 27 is mounted. If the magnetic disk 27 is not mounted, the process returns from step D4 to step A3.If the magnetic disk 27 is mounted, the process proceeds to step D5 to check whether the disk cassette has a claw or not by a signal from the claw detection switch 29. to decide. If there is no claw, recording on the magnetic disk 27 is prohibited, so an error display (Err) is displayed on the LCD 30 as shown in step D6, and the process returns to step D2. If it is determined in step D6 that there is a nail, step
In step D7, it is determined whether or not the value of the track counter provided in the system control unit 13 has reached "51". If the count value has reached "51", the image is displayed on all tracks. Since it is recorded, proceed to step D8.
Perform a full "FULL" display on LCD30, then step D
Return to 2. However, the track counter value is "51".
If it has not reached step D7, the process proceeds from step D7 to step D9 to display the track number on the LCD 30, and then step D1.
At 0, it is determined whether or not there is a remote control input. If there is no remote control input, the process proceeds to step D11, and it is determined whether or not the shutter switch SW1 is turned on by operating the shutter button. If not, the process returns to step D2, but if it is on, the process proceeds to step D12. The process of the shutter sequence I described later in detail is executed. Then step
Go to D13 and press the shutter button to release the shutter switch S
It is determined whether or not W2 is turned on. If not, it is determined at step D14 whether or not the shutter switch switch SW1 is turned on. If the shutter switch SW1 is on, the process returns to step D13 and the shutter switch S
The processes of steps D13 and D14 are repeated until W2 is turned on. In this case, when the shutter button is pressed halfway and the shutter operation is stopped, the state is detected in step D14, the recording circuit system is turned off and the spindle motor 24 is turned off, and the process returns to step D2 as shown in step D15. .
However, when the shutter button is pressed all the way, the shutter switch SW2 is turned on, and the process proceeds from step D13 to step D16A to determine whether it is the first shooting.

On the other hand, if it is determined in step D10 that there is a remote control input, the process proceeds to step D17.
The control switch 205 determines whether the delay mode is designated. If the delay mode is not specified, the process of the shutter sequence I shown in step D18 is executed and the process proceeds to step D16A. If the delay mode is specified, the process proceeds from step D17 to step D19 and the delay time measurement timer described later is delayed. It is determined whether or not time is being measured. Since the measurement operation has not yet been performed at the beginning, the process advances to step D20 to start a timer for measuring a delay time of, for example, 1 second, and then returns to step D2. 1 above
After the second timer is started, the determination result in step D19 is YES, so the process proceeds to step D21, it is determined whether or not the time is up, and if the time is not up, the process returns to step D2. When the 1-second timer finishes its measuring operation, the process proceeds from step D21 to step D18, and the shutter sequence I process is executed. After the processing of this shutter sequence I is completed, as described above, step D16A
Proceed to.

In this step D16A, it is determined whether or not it is the first shooting after the recording mode is specified. If it is the first shooting, the value of the track counter provided in the system control unit 13 in the memory 10 is stored in the memory 10 in step D16B. Preset to the initial track No. storage register of. And this step D16B
If the process in step D16A is completed, or if the result of the determination in step D16A is NO, then proceed to step D16C.
It is determined whether or not the rotation of 27 is stable. When the rotation of the magnetic disk 27 is stable, the processing of the shutter sequence II shown in step D22 is executed, and the captured image is recorded on the magnetic disk 27. Details of this shutter sequence II will be described later. Then, when the processing of this shutter sequence II is completed, it is determined in step D23 whether or not the count value of the track counter has reached "51", and if the count value has reached "51", the LCD 30 is displayed in step D24.
"FULL" is displayed on. If the value of the track counter has not reached "51", it is determined whether or not the continuous shooting mode is designated as shown in step D25. If the continuous shooting mode is not designated, the process proceeds to step D15. The recording circuit system and the spindle motor 24 are turned off. Also,
If the continuous shooting mode is designated, it is determined in step D26 whether or not the shutter switch SW2 is turned on. If the shutter switch SW2 is turned on, the process returns to step D22 to execute the shutter sequence II processing, and the shooting is performed. The image is recorded on the magnetic disk 27. Hereinafter, while the shutter switch SW2 is on, the processing of steps D22 to D26 is repeated, and the photographing operation is continuously performed at a predetermined time interval, for example, once every 1/4 second. The control of this time interval is achieved by, for example, providing a 1/4 second timer, activating this timer in synchronization with shutter control of a shutter sequence II described later, and performing this at the time-up of this timer. Then, when the shutter switch SW2 is turned off, it is determined that the photographing is completed, and the steps D26 to D15 are performed.
Then, the recording circuit system and the spindle motor 24 are turned off. Then, the process returns to step D2 to prepare for the next shutter operation and the like.

FIG. 8 shows the details of the shutter sequence I of steps D12 and D18 in FIG. In the shutter sequence I, first, in step E1, the AE signal from the AE circuit 19 is taken into the system control unit 13, the aperture value and the shutter speed are calculated based on a predetermined program, and the exposure condition is locked. Then, the system controller 13 gives a control signal to the aperture drive circuit 35 to set the aperture 32 to an aperture value based on the AE lock value. Next, in step E2, the spindle motor 24 is turned on, and in step E3, the local search process shown in FIG. 6 is executed to search for an empty track. Then, in step E4, the reproducing circuit system is turned off, and in step E5, the recording circuit system is turned on to end the processing of the shutter sequence I.

The local search process shown in step E3 is performed as shown in FIG. First, in step C1, the recording / reproducing switching circuit 45 is switched to the reproducing amplifier 46 side and the reproducing circuit system is turned on. Next, in step C2, it is determined whether or not the currently designated track is an empty track. If it is not an empty track, the recording head 26 is advanced one track in step C3, and then, in step C4, that track is an empty track. Whether or not it is an empty track, the process returns to step C3. Below, steps C3 and C4
The above operation is repeated to advance the recording head 26 to the position of the empty track, and the empty track search operation is completed. On the other hand, if it is determined that the track is an empty track in step C2, the process proceeds to step C to determine whether the track is the first track. If it is the first track, the local search processing is ended as it is, but if it is not the first track, the procedure proceeds to step C6, the recording head 26 is returned by one track, and then step C2.
Return to. If all the tracks on the magnetic disk 27 are empty tracks, the process of steps C2, C5, and C6 is repeated to return the recording head 26 to the first track and terminate the process. However, if a track on which an image is recorded is detected while the recording head 26 is being returned in the direction of the first track, the process proceeds from step C2 to step C3 described above.
Move 26 one track ahead. Then, the local search process is terminated after the empty track determination step C4. By the above processing, if all tracks are empty tracks, the recording head 26 is moved to the first track, and in all other cases, the recording head 26 is moved to the first empty track.

Next, details of the shutter sequence II of step D22 in FIG. 7 will be described with reference to FIG. In this shutter sequence II, first in step F1, the system control unit 13 gives a control signal to the shutter drive circuit 36,
The shutter 33 is driven at the shutter speed of the AE lock value set in the shutter sequence I. In this case, if the strobe is used, the strobe control is performed as shown in step F2 and then the process proceeds to step F3. If the strobe is not used, the process immediately proceeds from step F1 to step F3 to perform the recording process. That is, when the shutter 33 is controlled to be opened by the shutter drive circuit 36 as shown in step F1, the external incident light is imaged on the image pickup element 34 via the image pickup lens 31 and the diaphragm 32. The image sensor 34 electrically converts the optical image into a video signal and outputs the video signal to the video signal processing circuit 38. The video signal processing circuit 38 includes a luminance signal Y + S and a color difference signal RY, B including a sync signal from the input video signal.
-Y, and the luminance signal Y + S is separated into the luminance signal processing circuit 39
And input the color difference signals RY and BY to the color difference signal processing circuit.
Enter 40. The luminance signal processing circuit 39 and the color difference signal processing circuit 40 include the luminance signal Y + S and the color difference signals RY and B.
-Y respective FM signal Y _FM, the FM image signal are mixed by the mixing circuit 41 converts the C _FM, is output through the recording / erasing switching circuit 42 to the recording amplifier 44. Then, the FM image signal amplified by the recording amplifier 44 is sent to the recording head 26 via the recording / reproduction switching circuit 45, and the recording head 26 records the image signal on the specified track of the magnetic disk 27.

When the recording process of the image signal for one screen obtained by the image pickup device 34 is completed as described above, the process proceeds to the next step F4, the recording circuit system is turned off, and the shutter charge is performed in step F5. After that, the process proceeds to step F6 to perform the empty track search detailed in FIG. Next, as shown in step F7, the reproducing circuit system is turned off and the recording circuit system is turned on in step F8. Then, in step F9, the number of the empty track searched in step F6 is displayed on the LCD 30, and the processing of the shutter sequence II is completed.

Next, the reproducing operation will be described with reference to the timing chart of FIG. When reproducing the image recorded on the magnetic disk 27, the reproduction mode is designated by the main mode switch 14. Then, the track control switches 17a and 17b or the track control switch 204 of the remote controller 20 is operated to sequentially specify the track numbers, or the ten keys 201 of the remote controller 20 are used to directly specify a desired track number. When the reproduction mode is specified, the process proceeds from step A9 in FIG. 4 to step G0 in FIG. 10 to drive the spindle motor 24 to rotate, and then the recording head 26 is moved to the initial track of the memory 10 as shown in step G1. NO. Move to the preset track in the memory register. Then, the process proceeds to step G2, the reproducing circuit system is turned on, and the key input is read in step G3. Next, in step G4, it is determined whether or not the reproduction mode is set. If the reproduction mode is set, it is further determined in step G5 whether or not the magnetic disk 27 is present. Step G above
If the determination result of 4, G5 is NO, the process returns to step A3 in FIG. When it is determined in step G5 that a disc is present, the track N is displayed on the LCD 30 in step G6.
After displaying O., it proceeds to step G7 and determines whether or not there is a remote control input. If there is a remote control input, go to step G8 to determine whether it is a direct search. If it is a direct search, go to step G9
Determine whether the NO. Is "50" or less. If the designated track No. is larger than "50", the process directly returns to step G3,
If "50" or less, proceed to step G10 and specify track N
The current track number is subtracted from O. When the result of this subtraction is "+", that is, the specified track No. is the current track N.
If it is larger than O., the process proceeds to step G11 to switch the output switching circuit 52 to the ground side to turn off the output circuit, and the recording head 26 is advanced one track at step G12, and then the process returns to step G3 to perform the above operation. Repeat. In this case, each time the recording head 26 moves and the contents of the track counter are updated, the contents are preset in the initial track No. storage register in the memory 10. If the result of the subtraction in step G10 is "-", that is, if the specified track No. is smaller than the current track No.,
In step G14, the output switching circuit 52 is switched to the ground side to turn off the output circuit, and in step G14 the recording head 2
6 is returned by one track, and then the process returns to step G3 to repeat the above operation. Then, by the processing of steps G11 and G12 or the processing of steps G13 and G14, the designated track No.
When the current track No. coincides with the current track No., the process proceeds from step G10 to step G15 to switch the output switching circuit 52 to the superimpose processing circuit 51 side to turn on the output circuit. After that, the system control unit 13 sets the track NO. In the superimpose processing circuit 51 as shown in step G16, and returns to step G3. In this case, since the output circuit is kept in the ON state, the recording head 26 causes the magnetic disk
The image signals read from the 27 designated tracks are reproduced by the reproducing circuit system, and the superimpose processing circuit 51
Then, the track number is added and sent from the external output terminal 53 to, for example, an external monitor (not shown) for image display. When the next track number is designated in this state, the recorded image of the designated track is read out and displayed as an image by the above-mentioned operation. That is, when the recording mode is switched to the reproduction mode, if the shooting is performed in the recording mode, the first captured image at that time is reproduced first, and if the reproduction is not performed, the reproduction is performed in the previous reproduction mode. The last recorded image that had been recorded is reproduced first. Then, when another image is desired to be viewed, the image is designated by operating the track control switches 17a and 17b.

On the other hand, if it is determined in step G7 that it is not the remote control input, the process proceeds to step G17 and it is determined whether or not the track control switch 17a (+ key) is operated. When it is determined in step G8 that the direct search is not performed, the process proceeds to step G18, and it is determined whether or not the + key operation of the track control switch 204 of the remote controller 20 is performed. If it is determined in step G17 or G18 that the + key has been operated, the process proceeds to step G19 to determine whether the track number is "50", and if it is "50", the last track has already been reached. Since it is not possible to proceed to the next track, the process directly proceeds to step G16 and subsequent steps. In step G19 above, track No.
When it is determined that is not "50", the process proceeds to step G20, and it is determined whether or not the delay time measuring timer described later has timed up. This determination processing is for switching control of the image reproduction processing operation according to the operation time of the track control switches 17a, 204. In the image reproducing process according to the present embodiment, for example, if the switch operating time is less than 2 seconds, the recording head 26 is set to 1 by one switch operation.
When the track moves and only the next image is played back and is operated continuously for 2 seconds or more, the track is continuously moved at the same time interval as the shooting operation in the continuous shooting mode, that is, at the timing of 4 Hz, The image is played continuously for 1/4 second. Then, above step G20
The determination result of is initially NO, so in this case the step
Go to G21 to determine if the timer is measuring. At this point, the measurement operation has not started yet.
After proceeding from G21 to step G22 and advancing the recording head 26 one track, at step G23 a timer for measuring a delay time of, for example, 2 seconds is started, and after step G16, the process returns to step G3. Since the timer is started when the timer is started, the process is cycled from step G20 through step G21, step G16 and back to step G3 until the time is up. Then, when the time-up is detected in step G20 after 2 seconds have passed, the process proceeds to step G24, and it is determined whether or not the timing of moving the track, that is, the timing signal of 4 Hz is given, and the timing signal is given. If not, it goes through step G16 and returns to step G3. However, when the timing signal is given, the process goes to step G25 to advance the recording head 26 by one track, and then returns to step G3 via step G26.
Thereafter, while the track control switches 17a and 204 (+ key) are being operated, the recording head 26 is moved forward one track each time a timing signal of 4 Hz is applied in step G24. As a result, a desired image can be quickly found, and at the same time, images taken in the continuous shooting mode can be displayed as moving images at time intervals corresponding to the shooting time.

On the other hand, if the determination result of steps G17 and G18 is NO,
Go to steps G26 and G27, respectively, to determine whether the track control switches 17b, 204 (-key) have been operated. If no key operation has been performed, proceed to step G26.
After G16, return to step G3. If the result of the determination in steps G26 and G27 is YES, proceed to step G28 and select the current track.
It is determined whether or not NO. Is "1", and if "1", the process directly returns to step G3 through step G16. When it is determined in step G28 that the track No. is not "1", the recording head 26 is moved by performing the same processing as steps G20 to G25 in steps G29 to G34. In this case, in the movement processing of the recording head 26 in steps G31 and G34, the processing of "-1 track" is performed contrary to the case of steps G22 and G25. As described above, the tracks on the magnetic disk 27 are sequentially selected and designated, and the recorded images on the designated tracks are continuously reproduced. In this case, the point that you can quickly find the desired image is the same as when you operate the + key for a long time, but the images shot in continuous shooting mode are displayed as reverse motion video at time intervals that correspond one-to-one with the shooting. It

Next, the operation for erasing the recorded image on the magnetic disk 27 will be described. To erase recorded images, erase I mode, which erases one track at a time, and erase II, which erases all tracks at once
There are modes. Then, when the recorded image is erased one track at a time, first, the track number to be erased is designated in the reproduction mode. Then main mode switch 14
The erase mode I is designated by and the shutter button which also serves as the erase button is operated. If the erase mode I is specified,
The process proceeds from step A10 in FIG. 4 to the process shown in the flowchart in FIG. In the erase mode I processing, first, in step H1, the reproducing circuit system is turned off and the spindle motor 24 is turned off. Then, in step H2, the key input is read, and in step H3, the erase mode I
It is determined whether or not the magnetic disk 27 is mounted in step H4. If it is determined in step H3 that the erase mode I is not set, or step H4
If it is determined that there is no disc in step, the steps in Fig. 4
Return to A3. If it is determined in step H4 that there is a disc, the process proceeds to step H5 to determine whether or not the disc cassette has a claw. If there is no claw, the process proceeds to step H6 to display an error message on the LCD 30. After step H
Return to 2. If it is determined in step H5 that the nail is present, the process proceeds to step H7 to display the track number on the LCD 30, and then in step H8, it is determined whether or not the shutter switch SW2 is turned on. If the shutter switch SW2 is off, the process returns to step H2 and the above operation is repeated. Then, when the shutter switch SW2 is turned on, step H8
To Step H9, turn on the spindle motor 24,
It is driven to rotate at a speed of about 1/3 to 1/4 that of recording / playback. Then, in step H10, the erasing circuit system is turned on, that is, the recording / erasing switching circuit 42 is switched to the erasing signal source 43 side, and the erasing signal source 43 is turned on for about 1/20 second, for example. The erasing signal output from the erasing signal source 43 is sent to the recording head 26 via the recording / erasing switching circuit 42, the recording amplifier 44, and the recording / reproducing switching circuit 45, and the recording head 26 designates the magnetic disk 27. The recorded contents of the track are deleted. Then, when the above 1/20 second has elapsed, the process proceeds to step H10, the spindle motor 24 is turned off, the erase circuit system is turned off in step H12, and the process returns to step H2. Thus, the operation of erase mode I is completed.

Further, when erasing all the recorded contents of the magnetic disk 27, the erase mode II is designated by the main mode switch 14 and then the shutter button is operated. If the erase mode II is designated, the process proceeds from step A10 to the erase mode II process shown in FIG. That is, as shown in step I1, the reproducing circuit system is turned off and the spindle motor 24 is turned off, and then the key input is read in step I2. Next, in step I3, it is determined whether or not the erase mode II is set, and in step I4, it is determined whether or not the magnetic disk 27 is mounted. If it is determined in step I3 above that the erase mode is not II, or step I4
If it is determined that there is no disc in step, the steps in Fig. 4
Return to A3. If it is determined in step I4 that there is a disc, the process proceeds to step I5 to determine whether the disc cassette has a claw.
After displaying an error message at 0, return to step I2. If it is determined in step I5 that there is a nail, the process proceeds to step I7 to display “ALL” indicating that all tracks are erased on the LCD 30, and then in step I8 whether the shutter switch SW2 is turned on or not. Is determined, and if it is not turned on, step I2
Return to and repeat the above operation and wait. When the shutter switch SW is turned on in this state, the process proceeds from step I8 to step I9 to move the recording head 26 to the first track, and as shown in step I10, the spindle motor 24 is turned on to drive at low speed. Then, in step I11, the erasing circuit system is turned on for about 1/20 second to erase the recorded contents of the first track of the magnetic disk 27 as in the erase mode I.
After erasing this first track,
In step I13, the recording head 26 is moved to the next track, and the track number is displayed on the LCD 30 in step I13. Then, in step I14, the track number is "51".
If it has not reached "51", the process returns to step I11 to erase the next track. Thereafter, the processing of steps I11 to I14 is repeated to sequentially erase the recorded contents of each track. When the erasing of all the tracks is completed, the track number becomes "51". Therefore, the process proceeds from step I14 to step I15 to turn off the spindle motor 24 and turn off the erasing circuit system at step I16. Then, in step I17, the recording head 26 is moved to the first track, and then the step
Return to I2 to prepare for the next keystroke. Erase Mode II
Ends the operation.

The erasing mode is not limited to the I and II modes described above, but may be a mode in which one or two tracks are designated by a ten-key pad or the like and the recorded image after the designated track or between the designated tracks is erased.

Further, in the above embodiment, the track control switch 17a, 17b, 20 is operated to reproduce an image at the same time interval as the shooting time interval at the time of continuous shooting to search for an arbitrary image.
Although it is done in 4, it is equipped with a dedicated switch for continuous shooting image playback or a mode switch to switch between continuous shooting image playback mode and arbitrary image playback mode, and images during continuous shooting image playback and arbitrary image search The playback intervals may be different. In this case, although the circuit and the mechanism are somewhat complicated, since the time intervals for image reproduction are independent, the continuous shooting speed can be high-speed continuous shooting of 10 frames or more per second. When the mode changeover switch is provided, it is more desirable to add a double speed mode, a slow mode, or the like.

In the above embodiment, the completion of recording on all tracks and the notification of an error or the like are performed only by display, but a buzzer or the like may be provided. Further, a monitor such as a color LCD for displaying a reproduced image may be provided on the camera body.
In this case, the output signal Y + S of the luminance signal demodulation circuit 48 and the output signals RR and BY of the color demodulation circuit 49 are changed to R, G and B, respectively.
A circuit for driving the color LCD by modulating the above signal may be added to the circuit of the embodiment.

Further, in the above embodiment, the case where the mechanical shutter 33 is used has been described.However, when the image pickup device 34 is configured by a CCD, the accumulation time can be controlled only by the drive control of the CCD, so that the mechanical electronic shutter is used. It can be lost. Further, the recording medium is not limited to the magnetic disk, but may be another type such as a magnetic tape or a semiconductor memory.

[Advantages of the Invention] As described in detail above, according to the present invention, in the electronic still camera having the recording and reproducing functions, when the photographing is performed in the recording mode, the first photographed image is recorded. A storage unit for storing the recording area No. of the recording medium is provided, and when the mode is switched from the recording mode to the reproduction mode, the recorded image of the recording area No. stored in the storage unit is first reproduced. As a result, any playback image can be played back, and at the same time, when the mode is changed from the recording mode to the playback mode, the image captured first in the immediately preceding recording mode is played back first, for example, continuous shooting. The captured image or the like can be effectively displayed.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a block diagram showing the entire circuit configuration, FIG. 2 is a diagram showing a key arrangement state of a remote controller, and FIG. 3 is a display configuration of an LCD monitor. 4 and 5 are flowcharts showing a main flow for explaining the operation, FIG. 5 is a flowchart showing an empty track search operation, FIG. 6 is a flowchart showing a local search operation, and FIG. 7 is an operation in a recording mode. 8 is a flowchart showing the operation of the shutter sequence I, FIG. 9 is a flowchart showing the operation of the shutter sequence II, FIG. 10 is a flowchart showing the operation in the reproduction mode, and FIG. 11 is the erase mode I. FIG. 12 is a flow chart showing the operation of the erase mode II. 11 ... Timing signal generating circuit, 12 ... Crystal oscillator, 13 ... System control unit, 14 ... Main mode switch, 15 ... Shutter mode switch, 16 ... Shutter switch, 17a, 17
b ... Track control switch, 18 ... AE sensor, 1
9 ... AE circuit, 20 ... remote control, 201 ... numeric keypad, 202 ... enter key, 203 ... record key, 204 ... track control switch, 205 ... shutter control switch, 21 ... remote control sensor, 22 ... remote control receiver, 23 ... servo Control, 24
... Spindle motor, 25 ... Head moving mechanism section, 26 ... Recording head, 27 ... Magnetic disk, 28 ... Disk detection switch, 29 ... Claw detection switch, 30 ... LCD, 31 ... Imaging lens, 3
2 ... Aperture, 33 ... Shutter, 34 ... Image sensor, 35 ... Aperture drive circuit, 36 ... Shutter drive circuit, 37 ... Driver, 38 ... Video signal processing circuit, 39 ... Luminance signal processing circuit, 40 ... Color difference signal processing circuit, 41 ... Mixing circuit, 42 ... Recording / erasing switching circuit, 43 ...
Erase signal source, 44 ... Recording amplifier, 45 ... Recording / reproducing switching circuit, 46 ... Reproducing amplifier, 47 ... YC separation circuit, 48 ... Luminance signal demodulating circuit, 49 ... Color demodulating circuit, 50 ... Encoder, 51 ... Superimpose Processing circuit, 52 ... Output switching circuit, 53 ... External output terminal.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display area H04N 5/765 5/781

Claims (1)

[Scope of utility model registration request] 1. A recording means for converting an image obtained through a photographing lens into a video signal and recording it on a recording medium, a reproducing means for reproducing an image recorded on the recording medium, and both means. Which recording area is the mode selection means for setting the operation state to one and the recording area of the image first recorded on the recording medium by the recording means when the recording mode is selected by the mode selection means. Storage means for storing such information and means for causing the reproduction means to reproduce an image in a storage area corresponding to the information stored in the storage means when the mode selection means is switched from the recording mode to the reproduction mode. And a means for switching an image reproduced by the reproducing means to an image stored in another storage area when the mode selecting means selects a reproducing mode. Electronic still camera to.