JPH02140071A - electronic still camera - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Technical field of invention] The present invention relates to an electronic still camera.

[Prior art and its problems] It has been considered to use a magnetic disk as a recording medium in an electronic still camera. However, this magnetic disk is used by being stored in a cassette, and it has been considered that the storage cassette is provided with a claw for inhibiting recording on the magnetic disk.

However, although prohibiting recording based on the presence or absence of claws is useful in protecting the recorded content,
For the user, there is a disadvantage in that even though the image signal has been recorded, the image signal has not been recorded. Therefore, it may be possible to provide a display that constantly displays the presence or absence of claws to notify the user, but providing such a dedicated display not only increases the size of the camera itself, but also reduces power consumption. It was not favorable in that respect.

[Object of the Invention] The present invention has been made in view of the above-mentioned circumstances, and it not only makes it known that a magnetic disk without claws is installed, but also makes it possible to notify the user of the presence of a magnetic disk without claws, without providing a dedicated display, and also makes it possible to detect the presence of a magnetic disk when a recording operation is performed. To provide an electronic still camera that can clearly notify a user that no recording has been made.

[Summary of the Invention] The present invention provides a display means for optically displaying the position information of the magnetic disk, and when a magnetic disk storage cassette without claws is installed, the information is changed to the position information of the magnetic head at the time of recording. The main point is that the device is made to notify the user that the nail is missing.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, the overall configuration of the present invention will be explained with reference to FIG. In the figure, reference numeral 11 denotes a timing signal generation circuit that generates various timing signals using a crystal oscillator 12 and outputs them to the system control section 13 and other circuit sections. The system control unit 13 also includes a main mode switch 14, a shutter mode switch 15, a shutter switch 16,
Track control switch 178.17b is connected. The main mode switch 14 is constituted by, for example, a rotary switch, and switches and specifies each mode of recording, reproduction, erasing 11 and erasing H. The above erase mode ■ erases image information recorded on a magnetic disk in one track (described later).
This is a mode for erasing recorded images in units of 1 image, and erasing mode (2) is a mode for erasing all tracks of recorded images. A shutter mode switch 15 switches between a mode in which photographs are taken one by one (single) and a mode in which photographs are taken continuously.

The shutter switch 16 includes two switches SWI, S
The switch consists of W2, and SW2 is turned on when the shirt button is pressed halfway, and SW2 is turned on when the shirt button is pressed all the way. The shirt 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 are
This switch is used to move the designated recording track on the magnetic disk forward one track or back one track.

The system control unit 13 also includes an AE (automatic exposure)
A detection signal from the sensor 18 is input via the AE circuit 19, and a detection signal from the remote control sensor 21 is input via the remote control receiver 22. The above remote control sensor 21
A remote control that inputs an optical signal to a remote controller is configured as shown in FIG. 2, for example. That is, the remote control 2 shown in FIG.
0 is a numeric keypad 2011 that instructs the track number, an enter key 202 that instructs data input, a record key 203 that instructs shutter operation, a track control switch 204 that shifts the recording track, and a shutter control switch 204 that instructs slow mode of shutter operation. A control switch 205 is provided. This shutter/control switch 205 is
There are 1J and 2J modes.In mode ``1'', the shutter operates immediately when the record key 203 is operated, and in mode ``2'', the shutter operates after a certain period of time when the record key 203 is operated. It's supposed to work.

This delay mode is used when the remote control operator himself is the subject and it would be a problem if the remote control operator is photographed.

The system control unit 13 in FIG. 1 gives control commands to the servo control unit 23 in response to each switch operation on the camera body side or instructions from the remote control 20 to drive and control the spindle motor 24 and to move the head. A control command is given to the mechanism section 25 to control the movement of the recording head 2B. The spindle motor 24 rotates a magnetic disk 27 mounted on a camera body (not shown) according to a control command from the servo control section 23 . This magnetic disk 27 is an NTSC television signal.
50 tracks that can record image data for one field
In the case of field recording, it is possible to write image data equivalent to, for example, 50 sheets of silver halide film. In this case, the head moving mechanism section 25 is connected to the system control section 13.
The recording head 2 is instructed to write one field (one screen) worth of image data on one track in response to a command from
Control the movement of 6. The head moving mechanism section 25 is provided with a first track detection switch 25s that detects that the recording head 26 has moved to the first track, and the detection signal is sent to the system control section 13. 13 is preset to "1". The mounting portion of the magnetic disk 27 is provided with a disk detection switch 28 for detecting whether or not a disk is mounted, and a claw detection switch 29 for determining the presence or absence of a claw provided on the storage cassette for the magnetic disk 27, and the detection signal is is sent to the system control section 13. The system control unit 13 determines whether information can be written to 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 section 13. As shown in detail in FIG. 3, the LCD 30 includes a numeric/character display section 301 SR that displays characters such as track Nα, error, oven, etc., which is composed of, for example, four-digit Japanese-shaped segments.
A shutter mode display section 303 is provided to display the main mode display section a, 02, S (single) or C (continuous shooting) mode. There is.

Further, in FIG. 1, reference numeral 31 denotes an imaging lens, and this imaging lens 31 forms an image of externally incident light through an aperture 32 and a shutter 33 onto a solid-state imaging device 34 made of, for example, a CCD, a MOS transistor, or the like. The aperture 32 and shutter 33 are driven by an aperture drive circuit 35 and a shutter drive circuit 36, respectively, which operate based on commands from the system control section 13. Further, the image sensor 34 is driven by a driver 37 that operates according to a timing signal from a timing signal generation circuit II. The video signal output from the image sensor 34 is sent to a video signal processing circuit 38.

This video signal processing circuit 38 converts the video signal from the image sensor 34 into a luminance signal Y+S including a synchronization signal and a color difference signal R-Y.
, B-Y, and input the luminance signal Y+S to the luminance signal processing circuit 39, and input the color difference signals R-Y and BY to the color difference signal processing circuit 40. The luminance signal processing circuit 39 converts the luminance signal Y+S into an FM signal YPM and sends it to the mixing circuit 41.
The color difference signal processing circuit 40 outputs the color difference signals RY,
After line-sequentializing B-Y, it is converted into an FM signal CPM and output to the mixing circuit 41. This mixing circuit 41 combines the output signal YPM of the luminance signal processing circuit 39 and the color difference signal processing circuit 4.
0 output signal CPM is mixed and the recording/erasing switching circuit 42
Output to. 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 according to the switching signal from the system control section 13, and selects the output signal of the mixing circuit 41 or the erasing signal from the erasing signal source 43, and selects the output signal from the mixing circuit 41 or the erasing signal from the erasing signal source 43, Output to the recording head 2B. This recording head 2
Writing of an image signal or erasing of a recorded signal is performed on the magnetic disk 27 by means of B.

The recording/reproduction switching circuit 45 selects the recording amplifier 44 side or the reproduction amplifier 46 side according to a command from the system control section 13.

In the reproduction mode, the magnetic disk 27
The image signal recorded in
sent to. The output signal of the reproducing amplifier 4B is sent to a YC separation circuit 47 and separated into a luminance FM signal YFM and a color FM signal CFM. and is sent to the color demodulation circuit 49. The luminance signal demodulation circuit 48 demodulates the luminance signal Y+S from the luminance FM signal YPM and inputs it to the encoder 50, and the color demodulation circuit 49 demodulates the luminance signal Y+S from the luminance FM signal YPM and inputs it to the encoder 50.
The color difference signals R-Y and B-Y are demodulated from the PM and input to the encoder 50. The encoder 50 encodes the luminance signal Y+S demodulated by the luminance signal demodulation circuit 48 and the color difference signals RY and BY demodulated by the color demodulation circuit 49, and outputs the encoded signals to the superimpose processing circuit 51. The superimpose processing circuit 51 includes an encoder 50
The selected track N11L sent from the system control section 13 is synthesized with the signal from the system controller 13, and the synthesized signal is output to an external circuit via the output switching circuit 52 and the external output terminal 53. A monitor such as a television receiver, a video printer, or the like is connected to this 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 normal playback operation.
While L is designated and a direct search is performed, the line is switched to the ground line side and the monitor display is maintained at a black level. Note that the system control unit 13
The color FM signal CPM sent to is used for empty track detection in empty track search processing and local search processing, which will be described later.

Next, the operation of the above embodiment will be explained. When using the camera, the user first specifies the operating mode by switching the main mode switch 14 from the power-off state to a desired mode position, and then operates the switch according to the operating mode. In other words, if you want to take a photo, the main
A recording mode is designated by the mode switch 14, a single mode or a snapshot mode is designated by the shutter mode switch 15, and then the camera is pointed at the subject and the shutter button is operated. If you want to play back images recorded on the magnetic disk 27, specify the playback mode using the main mode switch 14, and select the track where the image you want to play is recorded using the track control switches 17a, 17b or the remote control 20. Specify No. If it is desired to further erase the recorded image on the magnetic disk 27, the main mode switch I4 is used to specify the erase mode (2) or the erase mode (2), and then the shirt button is operated.

According to the various key operations described above, the
The processing shown in the flowchart of FIG. 2 is executed. That is, when a desired operation mode is designated by the main φ 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, initialization processing is performed in the system control section 13 as shown in step Al in FIG. 4, and then, in step A2, the key input is read. Then, as shown in step A3, it is determined whether or not the magnetic disk 27 is installed based on the detection signal of the disk detection switch 28, and if the magnetic disk 27 is not installed, the process proceeds to step A4 and the LCD 30 is displayed. Oven (OPEN)
) is displayed to inform the user that the magnetic disk 27 is not installed. After that, in step A5, it is checked whether the magnetic disk 27 is installed or not.
If the magnetic disk 27 is not installed, proceed to step A4.
to continue displaying the oven. When the magnetic disk 27 is installed in this state, steps A5 to A6 are performed.
Then, the system control section 13 gives a drive command to the servo control section 23 to rotate the spindle motor 24 at a predetermined speed. Then, in step A7, the system control section 13 gives a control command to the head moving mechanism section 25 to move the recording head 26 to the first track of the magnetic disk 27. The movement of the recording head 26 to the first track is detected by the first track detection switch 25s. Thereafter, in step A8, it is determined from the setting state of the main mode switch 14 whether or not it is in the recording mode, and if it is the recording mode, the process proceeds to step A9 to execute empty track search processing, the details of which will be described later.

On the other hand, if it is determined in step A3 that the magnetic disk 27 is attached, the process proceeds to step AIO to determine whether or not the erase mode is in effect, and if it is not the erase mode, the process proceeds to step All to activate the spindle motor 24. It is rotated at a predetermined speed, and then, in step A12, local search processing, which will be described in detail later, is executed.

Then, if it is determined that the recording mode is not in step A8, or if the empty track search process in step A9 is completed, or if the empty track search process in step A9 is completed, or in step A
If the local search processing in step A12 is completed, the process advances to step A13 to perform a process to determine whether or not the recording mode is set.

If it is determined in this step A13 that the mode is the recording mode, a recording mode process whose details will be described later is executed, and if it is determined that the mode is not the recording mode, step A14 is executed.
to determine whether the mode is playback mode. This step A
If it is determined that the mode is playback mode in step A14, a process for playback mode, which will be described in detail later, is executed, and if it is determined that the mode is not playback mode, the process proceeds to step A15 and it is determined whether or not it is erase mode I. In addition, the above step AIO
This step A is also performed if it is determined that the erase mode is in
15 determination operations are performed. And this step A15
If it is determined that the erase mode is I, the process of erase mode I, which will be described in detail later, is executed, and if it is determined that the erase mode is not I, the erase mode ■, which will be described in detail later, is executed.
Execute the process.

Next, the empty track search process in step A9, the local search process in step A12, the recording process, the playback process,
The details of the erasing process (erase mode I and erase mode ■) will be explained.

FIG. 5 shows the details of the empty track search process in step A9. First, in step B1, the recording/reproducing switching circuit 45 is switched to the reproducing amplifier 4B and the reproducing circuit system is turned on. Next, the process proceeds to step B2, where it is determined whether or not the currently designated track is an empty track (if there is no color FM signal CFM from the YC separation circuit 47, it is an empty track); Go forward one track, then step B2
Return to Below, step B2. The operation B3 is repeated to advance the recording head 2B to the empty track position, and the empty track search operation is completed.

FIG. 6 shows details of the local search process in step A12 in FIG. 4. First, in step CI, the recording/reproduction switching circuit 45 is switched to the reproduction amplifier 46 side, and the reproduction circuit system is turned on. Then step C
In step 2, 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 by one track in step C3, and then, in step C4, it is determined whether or not the track is an empty track. If the track is not empty, the process returns to step C3. Thereafter, the operations of steps C3 and C4 are repeated to
Move B to the empty track position and complete the empty track search operation. On the other hand, if it is determined in step C2 that the track is empty, the process proceeds to step C5 and the first
Determine whether it is a truck or not. If it is the first track, the local search process ends, but if it is not the first track, the process proceeds to step C6, moves the recording head 26 back one track, and then returns to step C2. If all tracks on the magnetic disk 27 are empty, the recording head 26 is returned to the first track by repeating steps C2, C5, and CB, and the process ends. However, if a track on which an image has been recorded is detected while the recording head 26 is being returned to the first track direction,
The process advances from step C2 to step C3, where the recording head 26 is moved one track ahead. Then, the local search process ends after passing through the empty track determination step C4.

Through the above processing, if all the tracks are empty, the recording head 26 is moved to the first track, and in other cases, the recording head 28 is moved to the first empty track.

Next, the operation for recording photographed images on the magnetic disk 27 will be explained according to the flowchart of FIG. When proceeding from step A13 in FIG. 4 to the recording mode processing flow in FIG.
The reproduction switching circuit 45 is switched to the recording amplifier 44 side to turn off the reproduction circuit system, and at the same time, the spindle motor 24 is turned off. Next, in step D2, after reading the key power, the process proceeds to step D3, where it is determined whether or not it is in the recording mode.If it is not in the recording mode, the process returns to step A3 in FIG. 27
Determine whether or not it is installed. magnetic disk 27
If the magnetic disk 27 is not installed, the process returns to step A3, and if the magnetic disk 27 is installed, the process proceeds to step D5, where it is determined based on the signal from the pawl detection switch 29 whether or not there is a pawl on the disk cassette. If there are no claws, recording on the magnetic disk 27 is prohibited, so an error display (
E r r) and return to step D2. Further, if it is determined in step D6 that there is a claw, the process proceeds to step D7, where it is determined whether the value of the track counter provided in the system control unit I3 has reached "51". If the count value has reached "51", it means that images have been recorded on all the tracks, so the process advances to step D8, where a full "FULL" display is performed on the LCD 30, and then the process returns to step D2. However, if the value of the track counter has not reached "51", the process proceeds from step D7 to step D9, where the track Nα is displayed on the LCD 30, and then, in step DIO, it is determined whether or not there is a remote control input. If there is no remote control input, proceed to step Dll, determine whether or not the shutter switch SWI is on by operating the shutter button, and if it is not on, return to step D2, but if it is on, proceed to step DJ2, Processing of shutter sequence I, the details of which will be described later, is executed. Then step D
In step D13, it is determined whether or not the shutter switch SW2 is turned on by operating the shutter button, and if it is not turned on, the shutter switch SW2 is turned on in step D14.
Determine whether or not I is on. If the shutter switch SW1 is on, the process returns to step D13, and steps D13. until the shutter switch SW2 is turned on.
The process of DI4 is repeated. In this case, if the shutter button is pressed halfway and the shutter operation is canceled, that state is detected in step DI4, and the recording circuit system is turned off and the spindle motor 2 is turned off as shown in step D15.
4 is turned off and the process returns to step D2. However, if the shutter button is pressed all the way, the shutter switch SW2 is turned on, and the process proceeds from step D13 to step D16, where it is determined whether the rotation of the magnetic disk 27 has reached a stable state.
5. If the state is unstable, wait until it reaches a stable state.

On the other hand, if it is determined in step DIO that there is a remote control input, the process proceeds to step D17, where it is determined whether the delay mode is designated by the shutter/control switch 205. If the delay mode is not specified, the process of shutter sequence I shown in step D18 is executed and the process proceeds to step D16. If the delay mode is specified, the process proceeds from step DI7 to step D19 and the delay time measurement timer is set to the delay time. Determine whether measurement is in progress. Initially, since no measurement operation has been performed yet, the process proceeds to step D20 to start a timer for measuring a delay time of, for example, 1 second, and then returns to step D2. After starting the 1-second timer, the determination result in step D19 becomes YES, so step D2
1, it is determined whether the time has expired or not, and if the time has not expired, the process returns to step D2. Then, when the one-second timer finishes its measuring operation, the process proceeds from step D21 to step D18, and shutter sequence I processing is executed. After finishing the processing of this shutter sequence I,
Proceed to step DII3 as described above.

In step DL6, it is determined whether or not the rotation of the magnetic disk 27 has become stable. When the rotation of the magnetic disk 27 has stabilized, the process of shutter sequence (2) shown in step D22 is executed, and the photographed image is transferred to the magnetic disk 27. to be recorded. Details of this shutter sequence (2) will be described later. When the processing of the shutter sequence H is completed, it is determined in step 023 whether the count value of the track counter has reached "5", and if the count value has reached "51", the LCD 30 is displayed in step D24. "FUL LJ" will be displayed.

If the value of the track counter has not reached "51", it is determined in step D25 whether or not the quick-shooting mode has been designated, and if the quick-shooting mode has not been designated, the process proceeds to step D15, where the recording circuit system and spindle motor 24 are turned off. In addition, if the continuous shooting mode is specified, it is determined in step D2B whether or not the shutter switch SW2 is on, and the shutter switch SW2 is determined to be on.
If W2 is on, the process returns to step D22 to execute shutter sequence (2) and record the photographed image on the magnetic disk 27. Thereafter, while the shutter switch SW2 is on, steps D22 to D2B are repeated, and the photographing operation is continuously performed. When the shutter switch SW2 is turned off, it is determined that the shooting has ended,
Proceeding from step D2B to step D15, the recording circuit system and spindle motor 24 are turned off. Thereafter, the process returns to step D2 to prepare for the next shutter operation, etc.

FIG. 8 shows details of the shutter sequence I of steps D12 to D18 in FIG. 7. This shutter sequence I first starts with AE in step El.
The AE multiplication signal from the circuit 19 is input to the system control unit 13, the aperture value and shutter speed are calculated based on a predetermined program, and the exposure conditions are locked. Then, a control signal is given from the system control unit 13 to the aperture drive circuit 35, and the aperture 32 is set to an aperture value based on the AE lock value. Next, the process proceeds to step E2, where the spindle motor 24 is turned on, and at the same time, in step E3, a local search process shown in detail in FIG. 6 is executed to search for an empty track. Thereafter, the process proceeds to step E4, where the reproducing circuit system is turned off, and at the same time, at step E5, the recording circuit system is turned on, and the processing of the shutter sequence I is completed.

FIG. 9 shows details of the shutter sequence (2) in step D22 in FIG. 7 above. In this shutter sequence (2), first, in step Fl, a control signal is given from the system control unit 13 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 above. 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, step F1 is immediately followed by step F3.
Proceed to step 3 to perform recording processing. That is, step F1
As shown in FIG.
When the opening of the lens is controlled, external incident light forms an image on the imaging element 34 via the imaging lens 31 and the aperture 32. The image sensor 34 converts the optical image into an electrical video signal and outputs it to the video signal processing circuit 38. The video signal processing circuit 38 separates the input video signal into a luminance signal Y+S including a synchronization signal and color difference signals RY, B-Y, and inputs the luminance signal Y+S to a luminance signal processing circuit 39. , color difference signal R
-Y.

B-Y is manually input to the color difference signal processing circuit 40. The luminance signal processing circuit 39 and color difference signal processing circuit 40 convert the luminance signal Y+S, color difference signals R-Y, B-Y into FM multiplied signals FM Scp M, and mix them in a mixing circuit 41 to form an FM image signal. and record/erase switching circuit 4
2 to the recording amplifier 44. 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 2B records the image signal on a designated track of the magnetic disk 27.

When the recording process of one screen worth of image signals obtained by the image sensor 34 is completed as described above, the process proceeds to the next step F4, where the recording circuit system is turned off and the shutter is charged at step F5.

Thereafter, the process proceeds to step F6 to perform an empty track search as shown in detail in FIG. 5 above. Next, the reproducing circuit system is turned off as shown in step F7, and the recording circuit system is turned on in step F8.

Then, in step F9, the number of the empty track searched in step F8 is displayed on the LCD 30,
The processing of shutter sequence H ends.

Next, the playback operation will be explained. When reproducing images recorded on the magnetic disk 27, after specifying the reproduction mode with the main mode switch 14, the track Nα is selected by operating the track control switches 17a, 17b or the track control switch 204 of the remote control 20. The desired track Nα can be specified sequentially or directly using the numeric keypad 201 of the remote control 20. If the above playback mode is specified, the process proceeds from step A14 in FIG. 4 to step GO in FIG.
It is determined whether the track selected at that time is the first track. If it is the first track, the process proceeds to step G1, where the reproducing circuit system is turned on, and the key input is read in step G3. Furthermore, if it is determined in step GO that the track is not the first track, step G
2, after moving the recording head 26 back one track,
Proceed to step G3 to read the key manual input. Next, the process proceeds to step G4, where it is determined whether the mode is playback mode, and if it is the playback mode, it is further determined whether or not the magnetic disk 27 is present at step G5. Above step G4゜G
If the determination result in step 5 is No, the process returns to step A3 in FIG. Then, in step G5, if it is determined that there is a disc, the LCD 30 is displayed in step G6.
After displaying the track number, the program proceeds to step G7, where it is determined whether or not there is a remote control input. If there is a remote control input, proceed to step G8 to determine whether or not it is a direct search, and if it is a direct search, proceed to step G9.
It is determined whether the designated track number is "50" or less.

If the specified track Nα is greater than "50", the process returns to step G3, but if it is less than "50", the process returns to step G3.
Proceeding to IO, the current track Nα is subtracted from the designated track number. If the result of this subtraction is "+", that is, if the designated track number is larger than the current track number, the process advances to step Gll, where the output switching circuit 52 is switched to the ground side and the output circuit is turned off. At G12, the recording head 26 is advanced by one track, and then the process returns to step G3 to repeat the above operation. If the result of the subtraction in step GIO is "-", that is, if the designated track Nα is smaller than the current track number, the process proceeds to step G13, where the output switching circuit 52 is switched to the ground side and the output circuit is turned off. , the recording head 26 is moved back one track in step G14, and then the process returns to step G3 to repeat the above operation. Then, the above step Gl
l, G12 processing or step GIL G14
When the designated track seed matches the current track number through the process, the process proceeds from step GIO to step GL5, where the output switching circuit 52 is switched to the superimpose processing circuit 51 side and the output circuit is turned on. Thereafter, the system control unit 13 sends the track number to the superimpose processing circuit 51 as shown in step G1B.

is set and the process returns to step G3. In this case, since the output circuit is kept in the on state, the image signal read out from the designated track of the magnetic disk 27 by the recording head 2B is reproduced by the reproduction circuit system, and the superimpose processing circuit 51 reproduces the image signal from the designated track of the magnetic disk 27. No. is added, and the image is sent from the external connection terminal 53 to, for example, an external monitor (not shown) and displayed as an image.

If the next track number is specified in this state, the recorded image of the specified track is read out and displayed as an image by the above-described operation.

On the other hand, if it is determined in step G7 that the input is not a remote control input, the process proceeds to step G17, where it is determined whether or not the track writing control switch 17a (+ key) has been operated. If it is determined in step G8 that the search is not direct search, the process proceeds to step G18 and the track control switch 2 of the remote control 20 is
It is determined whether or not the + key operation of 04 has been performed. If it is determined in step G17 or 018 that the + key has been operated, the process advances to step G19 and the track N
o.

If it is "50", the last track has already been reached and it is not possible to proceed to the next track, so the process directly proceeds from step G16 onward. If it is determined in step G19 that the track fish is not "50", the process proceeds to step G20, where it is determined whether or not the time has expired.

That is, the track writing control switch 17a.

17b, 204 is operated, if the operation time is less than 2 seconds, the switch will move one track at a time, and if it is operated continuously for 2 seconds or more, the track will be moved continuously at a timing of 4Hz, for example. In order to move it, a total dpj operation is performed. Therefore,
Since the determination result in step G20 above is initially No,
In this case, the process advances to step G21 to determine whether or not measurement is in progress. At this point, the measurement operation has not yet started, so the process advances from step G21 to step G22 to advance the recording head 26 by one track, and then in step G23 a timer for measuring a delay time of, for example, 2 seconds is started.
The process returns to step G3 via step G1B. When the above-mentioned timer is started, the total time is n1, so the steps from step G20 to step G21. The process circulates through step G18 and returns to step G3. When a time-up is detected in step G20 after 2 seconds have elapsed, the process proceeds to step G24, where it is determined whether it is time to move the track, that is, whether or not a 4Hz timing signal has been applied, and whether or not the timing signal has been applied. If not, the process directly returns to step G3 via step 01B. However, if a timing signal is given, the process proceeds to step G25 to advance the recording head 2G by one track, and then passes through step GlB to step G3.
Return to Below, track control switch 17a
, 204 (+ key) is operated, the recording head 2B is moved forward by one track each time a 4 Hz timing signal is applied in step G24.

On the other hand, step G17. The determination result of G18 is No.
If so, proceed to steps G2B and G27, respectively, and turn on the track control switches 17b and 204 (
- key) is operated or not, and if the key is not operated, the process proceeds to step 016 and then to step G.
Return to 3. If the determination results in steps G2B and G27 are YES, the process advances to step 028, where it is determined whether the current track N (L is "1") is not, and if it is "1", the process directly proceeds to step G3 via step 016. Return.If it is determined in step G28 that the track number is not "1", then in steps 029 to G34, the same processing as in steps 020 to G25 is performed to move the recording head 26.In this case, step In the recording head 26) movement process in G31 and G34, step G22
．． Contrary to the case of G25, "-1 track" processing is performed. As described above, the tracks on the magnetic disk 27 are sequentially selected and designated, and recorded images on the designated tracks are continuously reproduced.

Next, the operation for erasing the recorded image on the magnetic disk 27 will be explained. For erasing recorded images, there are two modes: an erase I mode in which tracks are erased one track at a time, and an erase ■ mode in which all tracks are erased at once. When erasing recorded images one track at a time, first specify the track number to be erased in the playback mode. Next, the user selects portrait mode I from the main mode switch 141 and operates the shirt button, which also serves as an erase button. When erase mode I is designated, the process proceeds from step AI5 in FIG. 4 to the process shown in the flowchart in FIG. 11. In the erase mode I process, first, in step H1, the reproducing circuit system is turned off and the spindle motor 24 is also turned off.

Next, the process advances to step H2 to read the key manually, and in step H3, it is determined whether the erase mode 1 is selected.
In step H4, it is determined whether the magnetic disk 27 is attached. If it is determined in step H3 that the erase mode is not I, or if it is determined in step H4 that there is no disc, the process returns to step 83 in FIG. If it is determined in step H4 that there is a disc, the process proceeds to step H5, where it is determined whether or not there is a claw on the disc cassette. If there is no claw, the process proceeds to step H6, where an error is displayed on the LCD 30. Return to step H2. If it is determined in step H5 that there is a claw, the process advances to step H7 and the track number is displayed on the LCD 30.
, and then in step H8 it is determined whether the shutter switch SW2 is on. If the shutter switch SW2 is off, the process returns to step H2 and the above operation is repeated. And Nyatta switch SW
When 2 is turned on, the process advances from step H8 to step H9, where the spindle motor 24 is turned on and the 1/1 speed during recording/playback is turned on.
Rotate at a speed of about 3 to 1/4. Then, in step HIO, the erase circuit system is turned on, that is, the recording/erase switching circuit 42 is switched to the erase signal source 43 side, and the erase signal source 43 is turned on, for example, for about 1/20 seconds. The erase signal output from the erase signal source 43 is transmitted to the recording/erase switching circuit 42, the recording amplifier 44, and the recording/reproduction switching circuit 45.
is sent to the recording head 26 via the recording head 28.
As a result, the recorded contents of the designated track of the magnetic disk 27 are erased. When the 1/20 second has elapsed, the process proceeds to step HIO, where the spindle motor 24 is turned off, and at the same time, the erasing circuit system is turned off at step H12, and the process returns to step H2. This completes the operation of erase mode I.

If all recorded contents of the magnetic disk 27 are to be erased, the main mode switch 14 is used to designate erase mode (2), and then the shirt button is operated. Erase mode ■
If specified, the process proceeds from step AI5 to erase mode H shown in FIG. That is, step 11
As shown in FIG. 3, the reproducing circuit system is turned off and the spindle motor 24 is also turned off, and then, in step 2, the key power is read. Next, the process proceeds to step I3, where it is determined whether the erase mode (2) is selected, and at step I4, it is determined whether or not the magnetic disk 27 is mounted. If it is determined in step I3 that the erase mode is not set, or if it is determined that there is no disc in step I4, the process returns to step A3 in FIG. Then, if it is determined that there is a disc in step 4 above, step 15
Proceed to and determine whether the disc cassette has a claw,
If there is no claw, an error is displayed on the LCD 30 in step I6, and then the process returns to step I2. In addition, if it is determined in step I5 that there is a claw, the process proceeds to step I7 and the LCD screen is displayed.
At step 30, an rALLJ display indicating that all tracks will be erased is displayed, and then, at step I8, it is determined whether or not the shutter switch SW2 is turned on. If it is not turned on, the process returns to step I2 and the above operation is repeated to 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 at the same time, as shown in step 110, the spindle motor 24 is turned on and driven at low speed. Then, in step Ill, the erasing circuit system is turned on for about 1/20 seconds to erase the recorded contents of the first track of the magnetic disk 27 in the same manner as in erasing mode I. After erasing the first track, the process advances to step 112 where the recording head 2
6 is moved to the next track, and the next track is displayed on the LCD 30 in step 113. Thereafter, in step I14, it is determined whether the track number has reached "51" or not. If it has not reached "51", the process returns to step III to erase the next track.

Thereafter, the processes of steps Ill to 114 are repeated to sequentially erase the recorded contents of each track. Then, when all the tracks are erased, the track No.

or "51J, so step 114 to step 1
Step 1.5 turns off the spindle motor 24, and at step 11B the erasing circuit system is turned off. Then, in step II7, the recording head 26 is moved to the first track, and then the process returns to step I2 to prepare for the next keystroke. This completes the operation of erase mode H.

Note that in the above embodiments, notification of errors such as completion of recording to all tracks is performed only by display, but a buzzer or the like may be provided. Further, a monitor such as a color LCD for displaying reproduced images may be provided on the camera body. In this case, the output signal Y1S of the luminance signal demodulation circuit 48 and the color demodulation circuit 4
A circuit for driving a color LCD by modulating the output signals R-R, B-Y of No. 9 into R, G, and B signals may be added to the circuit of the embodiment.

Further, in the above embodiment, a case was explained in which a mechanical shutter 33 was used, but if the image sensor 34 is configured with a CCD, the accumulation time can be controlled only by controlling the drive of the COD, so a mechanical electronic shutter can be used. You can also eliminate it. Furthermore, the recording medium is not limited to a magnetic disk, but may also be, for example, a magnetic tape, a semiconductor memory, or the like.

[Effects of the Invention] As detailed above, according to the present invention, when a storage cassette without a claw is attached to an electronic still camera,
Since the display section that displays the position of the magnetic head during recording is made to display "no claw", it is not only immediately clear that a cassette without claws is installed, but also informs the user that no recording has been made. Can be done.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a block diagram showing the overall circuit configuration, FIG. 2 is a diagram showing the key layout of the remote control, and FIG. 3 is a diagram showing the display configuration of the LCD monitor. 4 is a diagram showing the main flow for explaining the operation, FIG. 5 is a flowchart showing the empty track search operation, FIG. 6 is a flowchart showing the local search operation, and FIG. 7 is the operation in recording mode. FIG. 8 is a flowchart showing the operation of shutter sequence I, FIG. 9 is a flowchart showing the operation of shutter sequence ■, FIG. 10 is a flowchart showing the operation in play mode, and FIG. 11 is erase mode. FIG. 12 is a flowchart showing the operation in erase mode H. DESCRIPTION OF SYMBOLS 11... Timing signal generation circuit, 12... Crystal resonator, 13... System control section, 14... Main...
Mode switch, 15...Shutter mode switch, 16...Shutter switch, 17a, 17b...
Track control switch, 18... AE sensor, 19... AE circuit, 20... Remote control, 201
...Numeric keypad 202...Enter key 203...
・5 Self-recording key 204...Track control switch, 205...Shutter control switch, 21...
・Remote control sensor, 22...remote control receiving section, 23.
... Servo control unit, 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, 32...Aperture, 33...Shutter, 34...Image sensor, 35...Aperture drive circuit, 3
6...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... Record/erase switching circuit, 43... Erase signal source, 44... Recording amplifier, 45... Record/playback switching circuit, 46... Playback amplifier, 47... YC separation circuit,
48... Luminance signal demodulation circuit, 49... Color demodulation circuit,
50... Encoder, 51... Superimpose processing circuit, 52... Output switching circuit, 53... External output terminal. Applicant's agent Patent attorney Takehiko Suzue No. 7 Sora Tora - 7 Suichi ↑ No. 7 Rogal Dimensions - Thousand No. Shutter Sheeps! Figure Shutter Sequence■ Figure 11.

Claims (1)

[Claims] It houses a photographing lens, an image sensor that photoelectrically converts an optical image obtained through the photographic lens and outputs an image signal, and a magnetic disk that records the image signal from the image sensor, and records and erases the image signal. a storage cassette having a claw portion for controlling the storage cassette; a claw detection switch for determining whether or not the claw portion of the storage cassette has a claw; and recording of an image signal on the magnetic disk, reading of the image signal, and erasing of the image signal. a magnetic head for performing the recording, a display means for optically displaying the position of the magnetic head, and a display means for notifying the absence of a claw by the optical display means based on a signal from the claw detection switch when recording on the magnetic disk. An electronic still camera characterized by comprising a notification means.