JPH02140077A - Still picture recording and reproducing device - Google Patents

Abstract

PURPOSE:To decrease number of switches and to make the device small in size by using a switch commanding the recording and a switch commanding the erasure in common. CONSTITUTION:In the case of photographing, a main mode switch 14 designates the recording mode and a shutter mode switch 15 designates the mode as to whether the single mode or the consecutive shot mode to pick up an object. Moreover, when a picture recorded on a magnetic disk 27 is desired for reproduction, the main mode switch 14 designates the reproduction mode, and a track number recorded with a picture desired for reproduction by track control switches 17a, 17b or a remote controller is designated. Moreover, when the recorded picture on the magnetic disk 27 is desired to be erased, the main mode switch 14 designates the erasure mode I (erasure in the unit of a track) or the erasure mode II (erasure of all tracks) and a shutter button 18 is operated, The button 16 is used in common with an erasure button and an on-signal of the switch SW 2 in the erasure mode is used as an erasure instruction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a still image recording and reproducing device such as an electronic still camera.

[Prior art and its problems] Devices for recording and reproducing still images on recording media such as magnetic disks have been known. For example, a normal stationary device extracts one field of a television signal and records it, and can play back the recorded image.Also, electronic still cameras can capture a subject through an imaging lens. The image is converted into a video signal and recorded, and the recorded image can be displayed on a monitor immediately after recording.

These devices are generally provided with a function to erase recorded images, but in conventional devices, recorded images are erased by operating a dedicated erase switch.

For this reason, there are problems in that the number of parts increases and it becomes difficult to arrange the switches when trying to make the device more compact.

[Object of the Invention] The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide a still image recording/reproducing device in which the number of switches is reduced and the device is easily miniaturized.

[Summary of the Invention] The present invention reduces the number of switches by sharing a switch for instructing a recording operation and a switch for instructing an erasing operation.

[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. Also connected to this system control section 13 are a main mode switch 14, a shutter mode switch I5, a shutter switch 16 that operates as a recording switch, and track control switches 17a and 17b. The main mode switch 14 is composed of, for example, a low-return switch, and switches and specifies each mode of recording, playback, erasing (11) and (2) erasing. The above erasing mode I is a mode in which image information recorded on a magnetic disk, which will be described later, is erased in units of one track (one disk), and the erasing mode (2) is a mode in which all tracks of recorded images are erased. 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 consists of two switches SWI and SW2, SWI is turned on when the shutter button is pressed halfway, and SW2 is turned on when the shutter button is pressed all the way.

Further, 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. Track control switch 17a
, 17b are switches for advancing the designated recording track of the magnetic disk by one track or returning by 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 201 for instructing the track number, an enter key 202 for instructing data input, a recording key 203 for instructing shutter operation, a track control switch 204 for shifting the recording track, and a shutter for instructing slow mode of shutter operation. - Equipped with a control switch 205. This shutter/control switch 205 is
There are lJ f'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 delay when the record key 203 is operated. It is supposed to be done. 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 26. 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. The track counter provided in I3 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 number/value/character display section 801 that displays characters such as track Nα, error, open, etc., which is composed of, for example, four-digit Japanese-shaped segments;
Main mode display section 31) that displays R (record), P (play), and E (erase) modes 2, S (single)
Alternatively, a shutter mode display section 303 is provided to display a mode of C (quick shooting).

Further, in FIG. 1, reference numeral 31 denotes an imaging lens, and this imaging lens 31 forms an image of external incident light via an aperture 32 and a shutter 33 onto a solid-state imaging device 34 made of, for example, a COD or MOS transistor. The aperture 32 and shutter 33 are configured by an aperture drive circuit 35 and a shutter drive circuit 3 that operate based on commands from the system control unit 13, respectively.
6. Further, the image sensor 34 is driven by a driver 37 that operates according to a timing signal from a timing signal generation circuit If. 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 RY.
The luminance signal y+s is input to the luminance signal processing circuit 39, and the color difference signal RY is separated into SB-Y.

B−Y is input to the color difference signal processing circuit 40. The luminance signal processing circuit 39 converts the luminance signal Y+S into FM doubler YFM and outputs it to the mixing circuit 41, and the color difference signal processing circuit 40
After line-sequentializing the color difference signals R-Y and B-Y, they are converted into FM double CFM and outputted to the mixing circuit 4E. This mixing circuit 41 mixes the output signal YFM of the luminance signal processing circuit 39 and the output signal CPM of the color difference signal processing circuit 4o, and outputs the mixed signal 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 according to the switching signal from the system control unit 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, It is output to the recording head 26.

The recording head 26 writes image signals on the magnetic disk 27 or erases recorded signals. The recording/reproduction switching circuit 45 selects the recording amplifier 44 side or the reproduction amplifier 4B 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 this reproduction amplifier 46 is sent to a YC separation circuit 47 and separated into a luminance FM signal YFM and a color FM signal CPM. 13 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 color difference signals RY and BY from the color difference FM signal CFM and inputs it to the encoder 50. The encoder 5o receives a luminance signal Y+s demodulated by the luminance signal demodulation circuit 4B and a color difference signal RY demodulated by the color demodulation circuit 49.

Encode B-Y and superimpose processing circuit 5
Output to 1. The superimpose processing circuit 51 synthesizes the selected track number sent from the system control unit 13 with the signal from the encoder 50, and outputs the synthesized signal to an external circuit via the output switching circuit 52 and 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, but when an arbitrary track number is specified, the output signal is directly output. While the search is being performed, the line is switched to the ground line side and the monitor display is maintained at a black level. The color FM signal CPM sent to the system control section 13 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, and a single mode or a snapshot mode is designated by the shutter mode switch I5. Thereafter, the user points the camera at the subject and operates the shutter button. If you want to play back images recorded on the magnetic disk 27, specify the playback mode using the main mode switch 14, and also use the track φ
Using the control switches 17a, 17b or the remote controller 20, the track Nα in which the image desired to be reproduced is recorded is designated. If it is desired to further erase the recorded image on the magnetic disk 27, the main mode switch 14 is used to designate erase mode I or erase mode ■, 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 mode switch 14, the power is first turned on, and the system control section 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 A1 in FIG. 4, and then, in step A2, reading of key input is performed. 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. If the magnetic disk 27 is not installed, the process advances to step A4 and the LCD 30 is displayed. Oven (OP E
N) A display is displayed to inform the user that the magnetic disk 27 is not installed. Thereafter, in step A5, it is checked whether or not the magnetic disk 27 is installed. If the magnetic disk 27 is not installed, the process returns to step A4 and the oven display continues. When the magnetic disk 27 is installed in this state, the process advances from step A5 to step A6, where the system controller 13 transfers the information to the servo controller 23.
A drive command is given to the spindle motor 24 to rotate 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. After that, in step A8, it is determined whether or not the recording mode is set based on the setting state of the main mode switch 14,
If it is the recording mode, the process advances to step A9 to execute an empty track search process, 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 AI3 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 4G 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 26 to the empty track position, and the empty track search operation is completed.

FIG. 6 shows details of the local search process in step AI2 in FIG. 4. First, in step C1, 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
6 to the empty track position, and the empty track search operation is completed. 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 is immediately terminated, but if it is not the first track, the process proceeds to step CB, 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 2B 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 26 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 (
Err) 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 13 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 full rFLTLLJ is displayed 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, and the track number is displayed on the LCD 30, and then, in step DIOE, it is determined whether or not there is a remote control input. do. If there is no remote control input, the process proceeds to step Dll, and it is determined whether or not the shutter switch SW1 is on by operating the shutter button. If it is not on, the process returns to step D2, but if it is on, the process proceeds to step D12. Processing of shutter sequence 1, 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 SWl is on, the process returns to step D13, and steps D13. until the shutter switch SW2 is turned on. The process of D14 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 as shown in step D1.5, and the spindle motor 24 is turned off, and step D2 Return to

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 D1B, where it is determined whether or not the rotation of the magnetic disk 27 has reached a stable state. If so, wait until a stable state is reached.

On the other hand, if it is determined in step D10 that there is a remote control input, the process proceeds to step D17, where it is determined whether or not 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 D17 to step D19 and the delay time measurement timer is set to the delay time. Determine whether measurement is in progress. Initially, since a total of n+ operations have not been performed yet, the process proceeds to step D20, where a timer for measuring a delay time of, for example, 1 second is started, and then the process returns to step D2. After starting the 1-second timer, the determination result in step D19 becomes YES, so step D
The process advances to step D21 to determine whether or not the time has expired, 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 completing the processing of this shutter sequence I, the process proceeds to step DIG as described above.

In step D1B, it is determined whether or not the rotation of the magnetic disk 27 has stabilized. When the rotation of the magnetic disk 27 has stabilized, the process of shutter sequence H 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 this shutter sequence H is completed, it is determined in step D23 whether 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. “Display F U L LJ.

Further, if the value of the track counter has not reached "51", it is determined whether or not the quick shooting mode is specified as shown in step D25, and if the continuous shooting mode is not specified, the process proceeds to step DL5 and the recording is performed. Turn off the circuit system and spindle motor 24. In addition, if the snapshot mode is specified, it is determined in step D2B whether or not the shutter switch SW2 is on, and the shutter switch SW2 is turned on.
If W2 is on, the process returns to step D22 to execute the shutter sequence H and record the photographed image on the magnetic disk 27. Thereafter, while the shutter switch SW2 is on, steps D22 to D26 are repeated to continuously perform the photographing operation. In this case, when the recording on the last recording track of the magnetic disk 27 is completed even during the continuous shooting operation, the judgment result in step D23 becomes YES, and a full (FULL) display is performed on the LCD 30 in step D24. Step D15
Then, the recording circuit system and spindle motor 24 are turned off, and then the process returns to step D2. That is, after completing recording on the magnetic disk 27, the spindle motor 24 is turned off to reduce power consumption. In the snapshot mode, when the shutter switch SW2 is turned off, it is determined that photographing has ended, and the process proceeds from step D2B to step D15, where 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. In this shutter sequence ■, first, in step E1, the AE
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 above-mentioned AE clock 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 H of step D22 in FIG. 7 above. In this shutter sequence (2), first, in step F1, a control signal is given from the system control unit 13 to the shutter drive circuit 36,
The shutter 33 is driven at the AE clock value shutter speed 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 Fl
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 3B separates the input video signal into a luminance signal Y+S including a synchronization signal and color difference signals RY, B-Y, inputs the luminance signal y+s to the luminance signal processing circuit 39, and outputs the color difference Signal R
-Y.

B−Y is input to the color difference signal processing circuit 40. The luminance signal processing circuit 39 and the color difference signal processing circuit 40 convert the luminance signal y+s and the color difference signal R-YSB-Y into FM multiplied signals FMSCFM, and mix the signals in a mixing circuit 41 to form FM image signals, which are then recorded/recorded. It is output to the recording amplifier 44 via the erase switching circuit 42. 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 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 empty track searched in step FB is displayed on the LCD 30, and the processing of the shutter sequence H is completed.

Next, the playback operation will be explained. When playing back images recorded on the magnetic disk 27, after specifying the playback mode using the main mode switch 14, the track control switch 17a, 17b or the track control switch 204 of the remote control 20 is operated. Specify N[L sequentially or press remote control 20
A desired track block is directly specified using the numeric keypad 201. If the above playback mode is specified, the fourth
The process proceeds from step A14 in the figure to step GO in FIG. 10, where it is determined whether the currently selected track is the first track or not. 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. Also, the above step GO
If it is determined that it is not the first track, the recording head 26 is moved back one track in step G2, and then the process proceeds to step G3, where key manual reading is performed. Next, the process proceeds to step G4, where it is determined whether the mode is playback mode or not.
If it is the reproduction mode, it is further determined in step G5 whether or not the magnetic disk 27 is present. If the determination result in steps G4 and G5 is No, step A3 in FIG.
Return to If it is determined in step G5 that there is a disc, then in step G6 the LCD 3
After displaying the track number at 0, the process proceeds to step G7, where it is determined whether there is a remote control input. If there is a remote control input, the process proceeds to step G8 to determine whether or not a direct search is being performed, and if it is a direct search, it is determined in step G9 whether or not the designated track N[L is "50" or less.

If the designated track number is greater than "50", the process returns to step G3, but if it is less than "50", the process advances to step GIO and the current track Nα is changed from the designated track number.
Subtract. If the result of this subtraction is "+", that is, if the designated track number is greater than the current track number, the process proceeds to step Gll, where the output switching circuit 52 is switched to the ground side and the output circuit is turned off. Step G1
2, the recording head 26 is advanced by one track, and then
Return to step G3 and repeat the above operation. Also, if the result of step GIO subtraction is "-", that is, if the designated track No. is smaller than the current track Na, then
Proceeding to step G13, the output switching circuit 52 is switched to the ground side to turn off the output circuit, and at the same time, in step G14, the recording head 26 is returned by one track, and then the process returns to step G3 to repeat the above operation. Then, the processing of steps Gll and G12 or step GL3.
The designated track Nα is changed to the current track N by the process of G14.
o, if it matches, step GIO to step G15
Then, 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 sets the track Nα in the superimpose processing circuit 51 as shown in step 01B, and 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 270 by the recording head 2B is reproduced by the reproduction circuit system, and the track magic signal is reproduced by the superimpose processing circuit 51. is added and sent from the external connection terminal 53 to, for example, an external monitor (not shown), where the image is displayed.

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 control switch 17a (+ key) has been operated. If step G8 determines that it is not a direct search, the process proceeds to step G18, where it is determined whether or not the + key of the track control switch 204 of the remote controller 20 has been operated. If it is determined in step G17 or G18 that the + key has been operated, the process proceeds to step G19, where it is determined whether the track NCL is "50" or not. If it is "50", the last track has already been reached and the next track is reached. Since it is not possible to proceed to the track , the process directly proceeds to the above-mentioned step G1B and subsequent steps. If it is determined in step G19 that the track N.alpha. is not "50", the process proceeds to step G20, where it is determined whether or not time has elapsed.

That is, the in-track 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. A measurement operation is performed in order to move it. Therefore, since the determination result in step G20 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 2B by one track. In step G23, a timer for measuring a delay time of, for example, 2 seconds is started, and in step 01B. After that, the process returns to step G3. When the timer is started, it is in the process of measuring, so the steps from step G20 to step G21. The process circulates through step G16 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 the truck movement timing, that is, whether or not a 4Hz timing signal has been applied, and whether or not the timing signal has been applied. If not, proceed directly to step 01B and step G3.
Return to But given a timing signal,
The process advances to step G25 to advance the recording head 26 by one track, and then returns to step G3 via step 01B. Below, track control switch 17a, 2
04 While the (+ key) is operated, step G
At step 24, the recording head 2B is moved forward one track each time a 4 Hz timing signal is applied.

On the other hand, step G17. The determination result of G18 is No.
In each case, step G28. Proceed to G27 and set track ψ control switches 17b, 204 (
- key) has been operated, and if no key has been operated, the process proceeds to step GlB and then to step G.
Return to 3. If the determination result in steps 02B and G27 is YES, the process proceeds to step 028, where it is determined whether the current track number is "1" or not. If it is "1", the process directly returns to step G3 via step G1B. If it is determined in step 028 that the track Nα is not "1", then in steps G29 to G34, the step G
The recording head 26 is moved by performing the same processing as in G20 to G25. In this case, in the movement processing of the recording head 2B in steps 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, the track Nα to be erased is designated in the playback mode. Next, erase mode I is designated by the main mode switch 14, and the shirt button, which also serves as an erase button, is operated. When erase mode I is designated, the process proceeds from step A15 in FIG. 4 to the process shown in the flowchart in FIG. 11. In this erase mode ■ process,
First, in step H1, the reproducing circuit system is turned off, and the spindle motor 24 is also turned off.

Next, the process proceeds to step H2, where the key is manually read, and in step H3, it is determined whether or not the erase mode I is set.
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 A3 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 proceeds to step H7 and the track Nα is displayed on the LCD 30.
is displayed, 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 shutter switch SW2
When 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
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 R43 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 28 via the recording head 2B.
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 AL5 to erase mode H shown in FIG. In other words, step ■1
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 I2, 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 in step E4 that there is no disc, the process returns to step A3 in FIG. If it is determined in step I4 that there is a disk, step I5
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 r8 to step (2)9 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 111, the erase circuit system is 1/20
The magnetic disk 27 is turned on for about a second, and the magnetic disk 27 is turned on as in erase mode I.
Erase the recorded contents of the first track.

When erasing on the first track is completed, the process proceeds to step I12, where the recording head 2B is moved to the next track, and in step 113, the track number is determined.

is displayed on the LCD 30. Thereafter, in step 114, it is determined whether the track number has reached "51" or not. If it has not reached "51", the process returns to step Ill and erases the next track. Thereafter, the processes of steps Ill to 114 are repeated to sequentially erase the recorded contents of each track. When the erasing for all tracks is completed, the track count becomes "51", so the process proceeds from step I14 to step 115, where the spindle motor 24 is turned off, and at the same time, at step 116, the erasing circuit system is turned off.

Then, in step 117, the recording head 2B is
Then, return to step I2 to prepare for the next key manpower. This completes the operation of erase mode H.

In the above embodiment, only a display means (error display) is provided as a notification means, but a buzzer or the like may be used instead. In addition, a color LC that displays the reproduced image on the camera body
A monitor such as D may be provided. In this case, the circuit of the embodiment modulates the output signal Y+S of the luminance signal demodulation circuit 48 and the output signal R-RSB-Y of the color demodulation circuit 49 into R, G, and B signals to drive the color LCD. It would be better to add it to .

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 CCD, so a mechanical electronic shutter can be used. You can also eliminate it.

[Effects of the Invention] As detailed above, according to the present invention, in a still image recording and reproducing device such as an electronic still camera, the switch for commanding recording operation and the switch for commanding erasing operation are shared. , the number of operation switches can be reduced, the number of parts can be reduced, and the device can be easily miniaturized.

[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. 8 is a flowchart showing the operation of shutter sequence I, FIG. 9 is a flowchart showing the operation of shutter sequence H, FIG. 10 is a flowchart showing the operation in playback mode, and FIG. 11 is a flowchart showing operation in erase mode. FIG. 12 is a flowchart showing the operation in erase mode (2). 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, 20
1...Numeric keypad, 202...Enter key 203
...Record key 204...Track control switch, 205...Nyatta control switch, 21.
...Remote control sensor, 22...Remote control receiving section, 23
... Servo control unit, 24 ... Spindle motor, 2
5... Head moving machine groove portion, 26... Recording head, 2
7...Magnetic disk, 28...Disk detection switch, 29...Claw detection switch, 30...LCD, 3
DESCRIPTION OF SYMBOLS 1... Imaging lens, 32... Aperture, 33... Shutter, 34... Image sensor, 35... Aperture drive circuit,
36...Shutter drive circuit, 37...Driver 3
8... 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... recording/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 Volume 1 Figure 11 t NEET'■ Procedural amendment 1989 and 8

Claims (1)

[Claims] A photographic lens, an image sensor that photoelectrically converts an optical image obtained through the photographic lens and outputs an image signal, a magnetic disk having a plurality of image recording tracks, and a magnetic disk that moves on the image track of the magnetic disk. magnetic head,
a position display means for displaying which of the plurality of image recording tracks the magnetic head is positioned on, a shutter switch, and the magnetic head is positioned by operating the shutter switch; a recording means for recording a video signal based on the image signal output from the image sensor on an image recording track; a track control switch for moving the magnetic head; and a track control switch for moving the magnetic head each time the magnetic head is moved by operation of the track control switch. a reproducing means for reading out a video signal recorded on the moved image recording track by the magnetic head; and a magnetic head for supplying an erasing signal to the magnetic head in place of recording by the recording means by operating the shutter switch. What is claimed is: 1. A still image recording and reproducing apparatus comprising an erase mode setting switch for erasing a video signal of an image recording track in which a still image recording track is located.