JPH02140079A - Electric still camera - Google Patents

Abstract

PURPOSE:To inform the completion of recording of all tracks to the user with simple circuit constitution by providing a retrieval means and discriminating it as the completion of all tracks when a recording head exceeds all tracks recorded with a picture signal so as to inform the fact. CONSTITUTION:When a magnetic disk 27 is loaded and a main switch 14 sets the recording mode, a detector switch 29 checks the presence of a lug of a disk cassette. When the presence of a lag is discriminated, whether or not a count of a track counter provided in a system control section 13 reaches 51 is discriminated. When the result of discrimination reaches a count of 51, since it means that a picture is recorded onto all tracks, FULL display is applied to an LCD 30. When the content of the track counter does not reach 51, the track number is displayed on the LCD 30. Then the processing of the shutter sequence I or II is implemented by the turning-on of the shutter switch SW 1 or SW 2.

Description

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

[Prior art and its problems] Electronic still cameras have been known that store still images on magnetic disks, and the magnetic disks can store image data for one field per track. It is considered that image data for a total of 50 fields can be stored.

However, in this type of camera, when images have been recorded on all 50 tracks, it is preferable to notify the user in some way to encourage the user to replace them.
For example, this type of technique is described in Japanese Patent Application Laid-open No. 1727/1983.

That is, this technique uses shift registers as image recording memories, provides a detection circuit for each shift register to determine whether or not an image is recorded, and counts the number of shift registers in which images are recorded. A notification is made when this count value matches the number of all shift registers.

However, in the above-mentioned technical means, it is necessary to provide a detection circuit for each image memory to determine whether or not image data is recorded, and also a counting circuit to count the number of recorded memories. However, the disadvantage is that the circuit becomes extremely complicated.

[Object of the Invention] The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide an electronic still camera that can notify that images are recorded on all image recording tracks of a magnetic disk with an extremely simple configuration. purpose.

[Key Points of the Invention] In order to achieve the above object, the present invention provides a recording head capable of recording and reproducing, and when an image signal is read from this recording, the recording head is sequentially moved to the next one. The main point is that the recording head is moved to the track, and when the recording head crosses all the tracks on which image signals are recorded, it is determined that all the trunks have been recorded and a notification is issued.

[Embodiment J 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 1B,
Track control switches 17a and 17b are connected. The main mode switch 14 is constituted by, for example, a rotary switch, and switches and designates each mode of recording, reproduction, erasure I, and erasure H. The above erase mode I is a mode for erasing image information recorded on a magnetic disk in units of one track (one disk), which will be described later.
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 consists of 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 of the magnetic disk forward one track or back one track. Furthermore, a detection signal from an AE (automatic exposure) sensor 18 is inputted to the system control section 13 via an AE circuit 19, and a detection signal from a remote control sensor 21 is manually inputted via a remote control receiving section 22. Above remote control sensor 2
A remote control that manually inputs an optical signal to a remote controller 1 is configured as shown in FIG. 2, for example. That is, the remote control 20 shown in FIG. 2 has a numeric keypad 201 for instructing track Nα, an enter key 202 for instructing data input, a recording key 203 for instructing shutter operation, a track control switch 204 for shifting recording tracks, and a shutter operation control switch. A shutter/control switch 205 for instructing slow speed mode is provided. This shutter/control switch 205 is
There are 1J and 2J modes, and in mode 1, the shutter operates immediately when the record key 203 is operated.
In mode "2", when the record key 203 is operated, the shutter operation is delayed for a certain period of time. This delay mode is used when the remote control operator himself is the subject and it would be a problem if the person operating the remote control was not 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/track detection switch 25s for detecting that the recording head 26 has moved to the first track.
The detection signal is sent to the system control unit 13 and presets a track counter provided in the system control unit 13 to "1".Then, the presence or absence of a disk is detected in the mounting portion of the magnetic disk 27. A disk detection switch 28 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 are provided, and a detection signal thereof 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 displays, for example, I/Rack No. and error numbers, which are composed of, for example, 4-digit Japanese-shaped segments.
Numerical/character display section 301 that displays characters such as oven
, a main mode display section 302 that displays modes such as , R (recording), P (playback), and E (erase), and a shutter mode display section 303 that displays modes such as S (single) or C (quick shooting). .

Further, in FIG. 1, reference numeral 31 denotes an imaging lens, and this imaging lens 31 forms an image of externally incident light via 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 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 the timing signal generation circuit 11. 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, a color difference signal RY, and a color difference signal RY.
. The luminance signal processing circuit 39 converts the luminance signal Y+S into an FM signal YFM and outputs it to the mixing circuit 4.
1, and the color difference signal processing circuit 40 outputs the color difference signal R-Y
, B-Y are line-sequentialized, converted into FM double CFM, and outputted to the mixing circuit 41. This mixing circuit 41 mixes the output signal YPM of the luminance signal processing circuit 39 and the output signal CPM of the color difference signal processing circuit 40,
Output to 2. 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 2B 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 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 this reproduction amplifier 46 is sent to a YC separation circuit 47 and separated into a luminance FM signal YPM and a color FM signal CPM. 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 Y1M and inputs it to the encoder 50, and the color demodulation circuit 49 demodulates the luminance signal Y+S from the luminance FM signal Y1M and inputs it to the encoder 50.
The color difference signal R-YXB-Y is 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 Nα sent from the system control unit 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 above output switching circuit 52
is controlled by the system control unit 13, and the superimpose processing circuit 51 is controlled by the system control unit 13 during normal playback operation.
However, while an arbitrary track Nα is designated and a direct search is performed, the output signal is switched to the ground line side and the monitor display is maintained at the 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, 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 an image recorded on the magnetic disk 27, specify the playback mode using the main mode switch 14, and select the track number where the image you want to play is recorded using the track or control switches 17a, 17b or the remote control 20. Specify. If you wish to further erase the recorded image on the magnetic disk 27, specify erase mode I or erase mode n with the main mode switch 14, and then
Operate the shirt button.

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, and if the magnetic disk 27 is not installed, the process proceeds 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 AI2, 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
When the local search process of I2 is completed, the process proceeds to step A13, where a process of determining whether or not the mode is recording mode is performed.

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 ALO
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 the erase mode H, which will be described in detail later.
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 46, and the reproducing circuit system is turned on. Next, the process proceeds to step B2 to determine 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 B
Return to 2. 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 A12 in FIG. 4. First, in step CI, the recording/reproduction switching circuit 45 is switched to the reproduction amplifier 4θ 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 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 2B 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 (
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 13 has reached "51". If the count value has reached "51", it means that images have been recorded on all tracks, so proceed to step D8 and display the full rFULLJ on the LCD 30.
Display is performed, and then the process returns to step D2. but,
If the value of the track counter has not reached "51", the process proceeds from step DI to step D9, the track number is displayed on the LCD 30, and then step DIO
It is determined whether or not there is remote control input. 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 I, the details of which will be described later, is executed. Thereafter, the process proceeds to step D13, where it is determined whether the shutter switch SW2 has been turned on by operating the shutter button, and if it has not been turned on, it is determined in step D14 whether or not the shutter switch SW1 is turned on. If the shutter switch SWI is on, the process returns to step D13, and steps DI3. 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 D14, and step D1
5, the recording circuit system is turned off, and the spindle motor 24 is also turned off, and the process returns to step D2. However, if you press the shutter button all the way, the shutter switch S
When W2 is turned on, the process proceeds from step D13 to step D16, where it is determined whether or not the rotation of the magnetic disk 27 has reached a stable state. If the rotation of the magnetic disk 27 is unstable, the process waits 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 D1B. If the delay mode is specified, the process proceeds from step D17 to step D19 and the delay time total 4-1 timer is set. Determine whether delay time is being measured. At first, since the total A11j operation has not been performed yet, the process proceeds to step D20 to start a timer that measures a delay time of, for example, 1 second, and then returns to step D2. After starting the 1 second timer above,
Since the determination result in step D19 is YES, 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 1-second timer finishes its measuring operation, step D2
1, the process proceeds to step D18, and shutter sequence I processing is executed. After completing the processing of this shutter sequence I, the process proceeds to step D1B as described above.

In step DIS, 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 rFUL LJ.

If the value of the track counter has not reached 51, it is determined in step D25 whether or not the continuous shooting mode is specified, and if the quick shooting mode is not specified, the process proceeds to step D15 to record the data. The circuit system and spindle motor 24 are turned off.If 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 turned off.
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 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 D2G 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 E1.
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 H of 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 above-mentioned shirt tank I. In this case, if the strobe is used, the strobe control is performed as shown in step F2, and then the process proceeds to step F3; if the strobe is not used, 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 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 pM%Cpy, respectively, and the mixing circuit 41
The signals are mixed to form an FM image signal, which is output to the recording amplifier 44 via the recording/erasing switching circuit 42. Then, the FM image signal amplified by this recording amplifier 44 is recorded/
The image signal is sent to the recording head 26 via the 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 Na searched in step F6 is displayed on the LCD 30,
Finish the processing of shutter sequence (■).

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 number, , or directly specify the desired track Nα using the numeric keypad 201 of the remote control 20. 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 2B 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 Then, in step G5, if it is determined that there is a disc, the LCD is displayed in step G6.
After displaying the track number at 30, the process proceeds to step G7, where it is determined whether or not there is a remote control input. If there is a remote control input, the process proceeds to step G8 to determine whether 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 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.
Proceed to IO and select the specified track number, then the current track number,
Subtract. If the result of this subtraction is “+”, that is,
If the designated track number is larger than the current track number, the process proceeds to step Gll, where the output switching circuit 5z is switched to the ground side to turn off the output circuit, and at the same time, the process proceeds to step G12.
At step G3, 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 subtraction in step GIO is "-", that is, if the designated track number is smaller than the current track number, the process advances to step G13, where the output switching circuit 52 is switched to the ground side and the output circuit is turned off. At the same time, the recording head 2B is moved back by one track in step G14, and then the process returns to step G3 to repeat the above operation. Then, step G11. Processing of G12 or step G13
C; When the designated track number matches the current track NQ through the process of step 14, the process moves from step GIO to step G1.
Proceeding to step 5, the output switching circuit 52 is switched to the superimpose processing circuit 51 side to turn on the output circuit. Thereafter, the system control unit 13 inputs the track number to the superimpose processing circuit 51 as shown in step 01B.

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 26 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. The image 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 N (L) 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 remote controller is not manually operated, the process proceeds to step G17, where it is determined whether or not the track control switch 17a (+ key) has been operated. If it is determined in step G8 that the search is not a direct search, the process proceeds to step 618, where the in-track control switch 2 of the remote control 20
It is determined whether or not the + key operation of 04 has been performed. If it is determined in step G17 or G18 that the + key has been operated, the process advances to step G19 and the track N
Determine whether α is "50" or not. If it is "50", the final track has already been reached and you cannot proceed to the next track.
The process directly proceeds to step G16 and subsequent steps. Also,
If it is determined in step G19 that the track number is not "50", the process proceeds to step G20, where it is determined whether or not time has elapsed.

That is, the track board 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 020 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 total tPj 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 that measures a delay time of, for example, 2 seconds is started.
The process returns to step G3 via step G1B. 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 016 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, 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 26 by one track, and then proceeds to step G1B to step G3.
Return to Below, track e control switch 17a
, 204 (+ key) is operated, the recording head 26 is moved forward one track each time a 4 Hz timing signal is applied in step G24.

On the other hand, step G17. If the determination result in G18 is No, proceed to steps 02B and G27 and turn the track control switches 17b and 20, respectively.
It is determined whether or not the key 4 (- key) has been operated, and if the key has not been operated, the process returns to step G3 via step G1B. If the determination result in step 02B or G27 is YES, the process advances to step 028 to determine whether the current track Nα is "1" or not. If it is "1", the process directly returns to step G3 via step 016. If it is determined in step 028 that the track number is not "1", in steps 029 to G34, the same processing as in steps 020 to G25 is performed and the recording head 2
move. In this case, in the movement processing of the recording head 26 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 specify the track number to be erased in the playback mode. Next, the main mode switch 14 is used to designate the erase mode (2), and the shirt button, which also serves as an erase button, is operated. If the erase mode is designated, the process proceeds from step A15 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 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 to display a track mark on the LCD 30, and then in step H8 it is determined whether or not 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. When the shutter switch SW2 is turned on, the process proceeds from step H8 to step H9, where the spindle motor 24 is turned on, and the
It rotates at about 1/4 speed. And step H
At step 1 (l), 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 is sent to the recording head 26 via the recording/reproducing switching circuit 42, the recording amplifier 44, and the recording/reproducing switching circuit 45, and the recorded content of the designated track of the magnetic disk 27 is erased by the recording head 2G. 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 erase circuit system is turned off at step H12, and the process returns to step H2.This completes the operation of the erase mode (2).

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 A15 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 I2, the key power is read. Next, the process proceeds to step E3, where it is determined whether or not the erase mode (2) is selected, and at the same time, 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 II4, the process returns to step A3 in FIG. Then, if it is determined that there is a disk in step 4 above, 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 6 and the process returns to step I2. In addition, the above step I5
If it is determined that the nail is growing, proceed to step I7 and press L.
Display rALLJ to erase all tracks on the CD 30, and then press the shutter switch SW in step I8.
2 is turned on, and if it is not turned on, the process returns to step 2 and the above operation is repeated to wait. When the shutter switch SW is turned on in this state, step I
8 to step I9, the recording head 26 is moved to the first track, and the spindle motor 24 is turned on and driven at low speed as shown in step IIO. and,
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. When the erasure for the first track is completed, the process proceeds to step 112, where the recording head 2G is moved to the next track, and in step 113, the track N (L) is displayed on the LCD 30. Thereafter, in step 114, the track Nα is changed to “51”. '', and if r51J has not been reached, the process returns to step Ill and erases the next track.

Thereafter, the processes of steps 111 to 114 described above are repeated to sequentially erase the recorded contents of each track. Then, when all the tracks are erased, the track No.

Since the value becomes "51", the process proceeds from step I14 to step 115, where the spindle motor 24 is turned off, and at the same time, the erasing circuit system is turned off at step I26. Then, in step 117, the recording head 26 is moved to the first track, and then step! Return to step 2 and prepare for the next key force. 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 Y+S 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 described in detail above, according to the present invention, the recording head is provided with a search means for sequentially moving the recording head to the next track if no image signal is recorded, and the recording head is caused to detect the image signal by the search means. The circuit configuration is extremely simple, and the user can easily see that all tracks have been recorded without increasing the size of the camera itself. It is possible to notify the

[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 ■, FIG. 10 is a flowchart showing the operation in playback mode, and FIG. 11 is a flowchart showing operation in erase mode I. 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, 2o1
...Numeric keypad 202...Enter key 203...
・S self-recording key 204...Track control switch, 2o5...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, 2g-1° disk detection switch, 29...Claw detection switch, 30...LCD,
31...Imaging lens, 32...Aperture, 33...Shutter, 34...Imaging element, 35...Aperture drive circuit, 36...Shutter drive circuit, 37...Driver
38... Video signal processing circuit, 39... Luminance signal processing circuit, 40... Color difference signal processing circuit, 41... Mixing circuit, 42... 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 , 5o... Encoder, 51... Superimpose processing circuit, 52... Output switching circuit, 53... External output terminal. Applicant's Representative Patent Attorney Takehiko Suzue

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, and a magnetic disk having a plurality of recording tracks in which the image signals from the image sensor are stored. a recording head that moves over the plurality of recording tracks of the magnetic disk and records the image signal on the moved track and reads the recorded image signal from the moved track; head position storage means for storing positional information on which of a plurality of recording tracks the recording head is on; and moving the recording head to the next recording track when the image signal is read by the recording head. and image-unrecorded track search means for changing the position information in the recording head position storage means to information corresponding to the moved recording track and stopping the movement of the recording head when no image information is read out; It is characterized by comprising a notification means for detecting, based on the position information of the head position storage means, that the recording head has exceeded the plurality of recording tracks in which the image signals are stored by the search means. electronic still camera.