JPH0477503B2 - - Google Patents

Description

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

[Prior art and its problems] Conventional electronic still cameras are generally dedicated to recording, but a playback circuit is installed in a part of the camera so that playback and display can be performed on the monitor (liquid crystal display panel) installed in the camera body. There is something like this. However, conventional electronic still cameras equipped with reproducing circuits are designed to enable confirmation of the quality or necessity of recorded images immediately after imaging, and are not configured to be able to reproduce arbitrary images.

There is a demand for images taken with electronic still cameras to be displayed large on a home TV or printed on a video printer, but with conventional cameras, the magnetic disk is removed from the camera and played back by connecting it to a TV or printer. This has disadvantages in that it must be set on the camera, the playback operation is troublesome, and a playback device separate from the camera is required. In addition, it would be convenient for searching if the track number etc. could be displayed on the image when playing back the image. Therefore, for example, it is possible to record the image number together with the image when recording. If the images are combined and recorded together, there is a problem in that the original image that was taken becomes invisible. Furthermore, when editing using the recording medium, the recorded image number gets in the way and requires a device to remove it.

[Object of the Invention] The present invention has been made in view of the above-mentioned circumstances, and allows recorded images to be reproduced and displayed on a home television or printed on a video printer without using a reproduction-only device. Another object of the present invention is to provide an electronic still camera that has a simple configuration and can reproduce image numbers without affecting recorded images.

[Summary of the Invention] The present invention provides an electronic still camera with a playback circuit that plays back recorded images, and also combines head position information with the playback image signal played back by this playback circuit and outputs it to an external device. The device is characterized in that it is provided with an output terminal for

[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 11 that generates various timing signals using a crystal oscillator 12.
Output to other circuit sections. The system control unit 13 also includes a main mode switch 14, a shutter mode switch 15, and a shutter switch 1.
6. Truck control switch 17a, 1
7b is connected. The main mode switch 14 is composed of, for example, a rotary switch, and switches and designates each mode of recording, reproduction, erasure, and erasure. The above erase mode 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 erase mode 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 SW1 and SW2, SW1 is turned on when the shutter button is pressed halfway, and SW2 is turned on when the shutter button is pressed all the way. The shutter button also serves as an erase button, and in the erase mode, the ON signal of switch SW2 is used as an erase command. The track control switches 17a and 17b advance the specified recording track of the magnetic disk by one track,
This is a switch to go back one track. Furthermore, a detection signal from an AE (automatic exposure) sensor 18 is input to the system control unit 13 via an AE circuit 19, and a detection signal from a remote control sensor 21 is input to the system control unit 13 via a remote control receiving unit 22.
The remote control that inputs an optical signal to the remote control sensor 21 is configured as shown in FIG. 2, for example. That is, the remote control 20 shown in FIG. 2 includes a numeric keypad 201 for instructing the track number, an enter key 202 for instructing data input, a record key 203 for instructing shutter operation, a track control switch 204 for shifting the recording track, and a shutter operation. The shutter control switch 205 is provided for instructing a slow speed mode. This shutter/control switch 205 has modes "1" and "2". In mode "1", the shutter operates immediately when the record key 203 is operated, and in mode "2", the shutter operates immediately when the record key 203 is operated. When this happens, the shutter will operate with a certain time delay. 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.

Then, the system control unit 13 in FIG.
In response to each switch operation on the camera body side or an instruction from the remote controller 202, a control command is given to the servo control section 23 to drive and control the spindle motor 24, and a control command is given to the head moving mechanism section 25 to perform recording. The movement of the head 26 is controlled. The spindle motor 24 rotates a magnetic disk 27 mounted on a camera body (not shown) in accordance with control commands from the servo control section 23. This magnetic disk 27 has 50 tracks on which image data for one field of an NTSC television signal can be recorded, and if the field is recorded, it is possible to write image data equivalent to 50 sheets of silver halide film, for example. It is. In this case, the head moving mechanism section 25 receives a command from the system control section 13 to move one field (one screen) per track.
The movement of the recording head 26 is controlled so as to write the corresponding image data. The head moving mechanism section 2
5 includes a first track detection switch 25 for detecting that the recording head 26 has moved to the first track.
s is provided, and its detection signal is sent to the system control section 13 to preset a track counter provided in the system control section 13 to "1". This track counter is provided to store information on the track position on the magnetic disk 27 at which the recording head 26 is currently located in each of the recording, reproducing, erasing, and erasing modes. By presetting the initial value to "1", the count value, which increases or decreases as the recording head 26 moves, indicates the accurate track position of the recording head 26. Further, in the mounting portion of the magnetic disk 27, 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 in the storage cassette of the magnetic disk 27 are provided. The signal 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.

Furthermore, an LCD (liquid crystal display panel) 30 is connected to the system control section 13 . This LCD3
As shown in detail in FIG. 3, numerical/character display sections 301 and 301 (R) display characters such as track number, error, open, etc., which are composed of, for example, four-digit day-shaped segments. ), P (play), E
A main mode display section 302 that displays the (erase) mode, and a shutter mode display section 303 that displays the S (single) or (continuous shooting) mode are provided.

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 driven by an aperture drive circuit 35 and a shutter drive circuit 36, respectively, which operate based on commands from the system control section 13. Further, the image sensor 34 is driven by a driver 37 that operates according to a timing signal from 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 and a color difference signal R.
-Y and B-Y, the luminance signal Y+S is input to the luminance signal processing circuit 39, and the color difference signal R-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 an FM signal.
The color difference signal processing circuit 40 converts the color difference signals R-Y, B-Y into line sequential signals, converts them into FM signals C _FM , and outputs them to the mixing circuit 41 _.
Output to 1. This mixing circuit 41 mixes the output signal Y _FM of the luminance signal processing circuit 39 and the output signal C _FM of the color difference signal processing circuit 40 and outputs the mixed signal to the recording/erasing switching circuit 42 . This recording/erase switching circuit 42
is the output signal of the mixing circuit 41 or the erasing signal source 4 according to the switching signal from the system control unit 13.
3 is selected and outputted to the recording head 26 via the recording amplifier 44 and the recording/reproduction switching circuit 45. 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 46 side according to a command from the system control section 13.

In the reproduction mode, the image signal recorded on the magnetic disk 27 is continuously outputted by the recording head 26 and sent to the reproduction amplifier 46 via the recording/reproduction switching circuit 45. The output signal of this reproduction amplifier 46 is sent to a YC separation circuit 47 and separated into a luminance FM signal Y _FM and a color FM signal C _FM .
Luminance FM signal Y _FM is luminance signal demodulation circuit 48, color
The FM signal _CFM is sent to the system control section 13 and the color demodulation circuit 49. The luminance signal demodulation circuit 48 demodulates the luminance signal Y+S from the luminance FM signal _YFM and inputs it to the encoder 50, and the color demodulation circuit 49 demodulates the luminance signal Y+S from the luminance FM signal YFM and inputs it to the encoder 50.
The color difference signals R-Y and B-Y are demodulated from the FM signal C _FM 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 count value of the track counter sent from the system control section 13, that is, the track number of the magnetic disk 27 currently selected by the recording head 26, is synthesized with the signal from the output switching circuit 52.
and output to an external circuit via an 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 connected to the superimpose processing circuit 5 during normal playback operation.
1 output signal is selected, but any track number.
is specified and a direct search is performed, the line is switched to the ground line side and the monitor display is maintained at a black level. Note that the color FM signal _CFM sent to the system control unit 13 is
It 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. That is, if you want to take a photo, specify the recording mode using the main mode switch 14, and
Single mode or continuous shooting mode is designated by the shutter mode switch 15, and then the camera is pointed at the subject and the shutter button is operated. If you want to play back images recorded on the magnetic disk 27, use the main mode switch 14 to specify the playback mode, and use the track control switches 17a, 17b or the remote control 20 to select the track number in which the image you want to play is recorded. Specify. If it is desired to further erase the recorded image on the magnetic disk 27, the main mode switch 14 is used to designate the erase mode or erase mode, and then the shutter button is operated.

Accordingly, the processes shown in the flowcharts of FIGS. 4 to 12 are executed in accordance with the various key operations described above. That is, the main mode switch 14
When a desired operation mode is designated by , the power is first turned on and the system control section 13 executes the process shown in the flowchart of FIG.
When the power is turned on, initialization processing is first performed in the system control section 13 as shown in step A1 in FIG. 4, and then reading in response to key input is performed in step A2. Then, as shown in step A3, the magnetic disk 27 is detected based on the detection signal of the disk detection switch 28.
If the magnetic disk 27 is not installed, the program proceeds to step A4 and displays OPEN on the LCD 30 to notify the user that the magnetic disk 27 is not installed. Inform. Thereafter, in step A5, it is checked whether or not the magnetic disk 27 is attached. If the magnetic disk 27 is not attached, the process returns to step A4 and the open display is continued.
When the magnetic disk 27 is mounted in this state, the process proceeds from step A5 to step A6, in which a drive command is given from the system control section 13 to the servo control section 23 to rotate the spindle motor 24 at a predetermined speed. Then, in step A7, a control command is given from the system control section 13 to the head moving mechanism section 25 to move the recording head 26 to the first position of the magnetic disk 27.
Move to track. The movement of the recording head 26 to the first track is detected by the first track detection switch 25s, and the aforementioned track counter provided in the system control unit 13 for recording the track position of the recording head 26 is counted. The value is preset to "1". after that,
Main mode switch 1 at step A8
It is determined whether or not the recording mode is set based on the setting state of 4. If it is the recording mode, the process advances to step A9 to execute empty track search processing, which will be described in detail later.

On the other hand, if it is determined in step A3 that the magnetic disk 27 is not attached,
Proceeding to step A10, it is determined whether or not the erase mode is in effect. If not, the process proceeds to step A11, where the spindle motor 24 is driven to rotate at a predetermined speed, and then, in step A12, local search processing, which will be described in detail later, is executed. do.

If it is determined in step A8 above that the mode is not recording mode, the above step
If the empty track search process in A9 is completed, or if the local search process in step A12 is completed, the process advances to step A13 to determine whether or not the recording mode is in effect. This step A13
If it is determined that you are in recording mode,
Recording mode processing, the details of which will be described later, is executed, and if it is determined that the mode is not recording, the process proceeds to step A14, where it is determined whether or not the mode is reproduction mode. If it is determined in this step A14 that the mode is playback mode, the 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 to determine whether or not it is in erase mode. . Also, if it is determined in step A10 that the mode is erase mode, the determination operation in step A15 is performed. If it is determined that the erase mode is in step A15, then erase mode processing, which will be described in detail later, is executed, and if it is determined that the erase mode is not, then erase mode processing, which will be described in detail later, is executed.

Next, the empty track search process in step A9 above,
Step A12 local search processing, recording processing,
The details of the playback process and the erase process (erase mode 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, 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), and if it is not an empty track, the recording head is moved to step B3. 26 one track ahead, then step
Return to B2. Thereafter, the operations of steps B2 and B3 are repeated to advance the recording head 26 to the empty track position, and the empty track search operation is completed. Note that the count value of the track counter provided in the system control section 13 is calculated by the recording head 26 in step B3.
The count value of the track counter at the end of this empty track search operation corresponds to the track where the recording head 26 was finally located, that is, the track number of the empty track.

FIG. 6 shows details of the local search process in step A12 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. Next, the process proceeds to step C2, where it is determined whether the currently designated track is an empty track or not.
If the track is not empty, the recording head 26 is advanced by one track in step C3, and then in step C4 it is determined whether the track is empty or not.
Return to Thereafter, steps C3 and C4 are repeated to advance the recording head 26 to the empty track position, and
Ends the empty track search operation. On the other hand, if it is determined in step C2 that the track is empty, the process proceeds to step C5 where it is determined whether or not it is the first track. 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 C6, moves the recording head 26 forward by one track, and then returns to step C2. If all the tracks on the magnetic disk 27 are empty, the recording head 26 is returned to the first track by repeating steps C2, C5, and C6, and the process ends. However, recording head 2
If a track on which an image has been recorded is detected while returning the recording head 6 in the direction of the first track, the process proceeds from step C2 to step C3, and the recording head 2 is returned to the first track direction.
Move 6 one track ahead. Then, the local search process ends after passing through 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. Also, the count value of the track counter built in the system control unit 13 is 1 when the recording head 26 is moved in steps C3 and C4.
Since the count is counted up or down, the count value of the track counter at the end of this local search process also represents the track number of the track on which the recording head 26 is finally located.

Next, the operation for recording photographed images on the magnetic disk 27 will be explained according to the flowchart of FIG. Proceeding from step A13 in FIG. 4 to the recording mode processing flow in FIG. Turn off. Then, after reading the key input in step D2,
Proceed to step D3 to determine whether it is in recording mode or not.
If it is not the recording mode, the process returns to step A3 in FIG. 4, and if it is the recording mode, it is determined in step D4 whether or not the magnetic disk 27 is mounted. If the magnetic disk 27 is not installed, the process returns from step D4 to step A3; if the magnetic disk 27 is installed, the process proceeds to step D5, where it is determined whether or not there is a pawl in the disk cassette based on the signal from the pawl detection switch 29. to decide. If there is no claw, recording on the magnetic disk 27 is prohibited, so an error message (Err) is displayed on the LCD 30 as shown in step D6, and the process returns to step D2. Furthermore, 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 image on the LCD 30.
Then, return to step D2. However, if the value of the track counter has not reached "51", the process advances from step D7 to step D9 to display the currently selected track number, that is, the count value of the track counter, on the LCD 30, and then proceeds to step D9. At D10, it is determined whether there is a remote control input. If there is no remote control input, step
Proceeding to step D11, 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, where the shutter sequence is explained in detail later. Execute processing. After that, the process proceeds to step D13, where it is determined whether or not the shutter switch SW2 has been turned on by operating the shutter button.
If it is not on, it is determined in step D14 whether or not the shutter switch SW1 is on. If the shutter switch SW1 is on, the process returns to step D13, and the processes of steps D13 and D14 are repeated until the shutter switch SW2 is turned on. In this case, if the shutter button is pressed halfway and the shutter operation is canceled, that state is detected in step D14, and the recording circuit system is turned off as well as the spindle motor 24 as shown in step D15, and the process returns to step D2. . but,
If you press the shutter button all the way, shutter switch SW2 will turn on and the steps will start from step D13.
Proceeding to D16, it is determined whether or not the rotation of the magnetic disk 27 has reached a stable state. If the rotation is unstable, the process waits until the 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, execute the shutter sequence processing shown in step D18 and proceed to step D18.
The process proceeds to D16, and if the delay mode is designated, the process proceeds from step D17 to step D19 to determine whether or not measurement is in progress. At first, since no measurement operation has been performed yet, the process proceeds to step 20 to start a timer of, for example, 1 second, and then returns to step D2.
After starting the 1 second timer, the determination result in step D19 will be YES, so step
Proceeding to step D21, it is determined whether or not the time is up, and if the time is not up, the process returns to step D2. When the one-second timer finishes its measuring operation, the process advances from step D21 to step D18 to execute the shutter sequence process. After completing this shutter sequence processing, the process proceeds to step D16 as described above.

In step D16, 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 shutter sequence 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 will be described later. When the shutter sequence processing is completed, it is determined in step D23 whether or not the count value of the track counter has reached "51".
If the count value has reached "51", step D24
``FULL'' is displayed on the LCD 30.
If the track counter value has not reached "51", it is determined whether or not continuous shooting mode is specified as shown in step D25, and if continuous shooting mode is not specified, the process proceeds to step D15. The recording circuit system and spindle motor 24 are turned off.
If the continuous shooting mode is specified, it is determined in step D26 whether or not the shutter switch SW2 is on, and if the shutter switch SW2 is on, the process returns to step D22 to execute shutter sequence processing and take pictures. Transfer images to magnetic disk 2
Record in 7. Thereafter, while the shutter switch SW2 is on, steps D22 to D26 are repeated to continuously perform the photographing operation. Then, when the shutter switch SW2 is turned off, it is determined that the shooting has ended, and the process moves from step D26 to step D15.
Then, 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.

Figure 8 shows step D12 in Figure 7 above.
This shows the details of the D18 shutter sequence. In this shutter sequence, first, in step E1, the AE signal from the AE circuit 9 is taken into the system control section 13, the aperture value and shutter speed are calculated based on a predetermined program, and the exposure conditions are locked. Then, the system control unit 13
gives a control signal to the aperture drive circuit 35 from the aperture 3
2 is set to the aperture value based on the above AE lock value. Next, proceeding to step E2, the spindle motor 24 is turned on, and at the same time, in step E3,
The local search process shown in detail in FIG. 6 is executed to search for an empty track. Then step
At step E4, the reproducing circuit system is turned off, and at step E5, the recording circuit system is turned on to complete the shutter sequence process.

FIG. 9 shows details of the shutter sequence at step D22 in FIG. 7 above. In this shutter sequence, first, in step F1, a control signal is applied from the system control section 13 to the shutter drive circuit 36, and the shutter 33 is driven at the shutter speed of the AE lock value set in the shutter sequence. In this case, if the strobe is used, the strobe control is performed as shown in step F2, and then the process proceeds to step F3; if the strobe is not used, the process immediately proceeds from step F1 to step F3 to perform recording processing. That is, when the shutter drive circuit 36 controls the shutter 33 to open as shown in step F1, external incident light forms an image on the image pickup element 34 via the image pickup lens 31 and the diaphragm 32. This image sensor 34 is
The optical image is converted into an electrical video signal and output 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 motive signal and color difference signals R-Y, B-Y, and sends the luminance signal Y+S to the luminance signal processing circuit 39.
The color difference signals R-Y and B-Y are input to the color difference signal processing circuit 40. The above luminance signal processing circuit 3
9 and the color difference signal processing circuit 40, the luminance signal Y
+S, color difference signals R-Y, B-Y are converted into FM signals Y _FM and C _FM , respectively, mixed by a mixing circuit 41 to form an FM image signal, and outputted to a recording amplifier 44 via a recording/erasing switching circuit 42. do. 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 tracks the designated track of the magnetic disk 27, that is, the local track of step E3 in FIG. An image signal is recorded on the empty track selected in the search process.

When the recording process of one screen worth of image signals obtained by the image pickup device 34 is completed as described above, the process proceeds to the next step F4, where the recording circuit system is turned off, and at the same time, a shutter charge is performed 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 number searched in step F6 is displayed on the LCD 30, and the shutter sequence processing is completed.

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, turn the track control switch 17.
a, 17b or by operating the truck control switch 204 on the remote control 20.
Specify the numbers sequentially or use the numeric keypad 2 on the remote control 20.
01 to directly specify the desired track number. If the above playback mode is specified, the fourth
The program proceeds from step A14 in the figure to step G0 in FIG. 10, where it is determined whether the currently selected track is the first track or not based on the count value of the track counter. If it is the first track, proceed to step G1 and turn on the regeneration circuit system.
Key input is read in step G3.
If it is determined in step G0 that this is not the first track, the recording head 26 is moved back one track in step G2, that is, a recorded track adjacent to the empty track is selected, and then the process proceeds to step G3. Reads key input. Next, proceed to step G4 to determine whether or not the mode is playback mode, and if the mode is playback mode, proceed to step G4.
It is determined whether or not there is a magnetic disk 27 in G5. The determination result in steps G4 and G5 above is NO.
In this case, return to step A3 in FIG. and,
If it is determined in step G5 that a disk is present, the count value of the track counter, that is, the current track number, is displayed on the LCD 30 in step G6, and then 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 or not it is a direct search, and if it is a direct search, it is determined in step G9 whether the designated track number 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", proceed to step G10 and subtract the current track number from the designated track number. If the result of this subtraction is "+", that is, the specified track number.
is larger than the current track number, step G11
At step G12, the output switching circuit 52 is switched to the ground side to turn off the output circuit, and at step G12 the recording head 26 is advanced by one track, and then the process returns to step G13 to repeat the above operation. If the result of the subtraction in step G10 is "-", that is, if the designated track number is smaller than the current track number, the process proceeds to step G3, 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 26 is moved back one track in step G14, and then the process returns to step G3 to repeat the above operation. When the designated track number matches the current track number through the processing of steps G11 and G12 or the processing of steps G13 and G14, the process proceeds from step G10 to step G15, where the output switching circuit 5
2 to the superimpose processing circuit 51 side to turn on the output circuit. Thereafter, the system control section 13 sets the track number, that is, the count value of the track counter, in the output switching circuit 52 as shown in step G16, and returns to step G3. In this case, since the output circuit is held in the on state, the recording head 26 drives the magnetic disk 2.
The image signal read from the designated track 7 is reproduced by the reproduction circuit system, and the track number (count value of the track counter) is added by the superimpose processing circuit 51, and the image signal is transmitted from the external connection terminal 53 to, for example, an external monitor ( (not shown) and 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, proceed to step G17 and press the truck control switch 17a (+ key).
Determine whether or not the has been operated. Also, step
If G8 determines that it is not a direct search, proceed to step G18 and use the remote control 20.
It is determined whether or not the + key of the track control switch 204 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 number is "50" or not based on the count value of the track counter. has already reached the final track and cannot proceed to the next track, so the process directly proceeds from step G16 onwards. If it is determined in step G19 that the track number is not "50", the process proceeds to step G20 to determine whether or not time has elapsed. That is, the truck control switch 17a, 1
7b, 204 is operated, if the operation time is less than 2 seconds, 1
It moves one track at a time, and if the operation is continued for 2 seconds or more, a measurement operation is performed to move the tracks continuously at a timing of 4 Hz, for example. Therefore, the determination result in step G20 above is initially NO, so in this case, step
Proceed to G21 to determine whether measurement is in progress. At this point, the measurement operation has not yet started, so proceed from step G21 to step G22 and record head 2.
After advancing 6 by one track, for example, a 2 second timer is started in step G23, and the process returns to step G3 via step G16. When you start the above timer, it will start measuring, so you will need to continue from step G20 to step G21 until the timer times out.
It circulates through G16 and returns to step G3.
When 2 seconds have elapsed and a time-up is detected in step G20, the process proceeds to step G24, where it is determined whether it is time to move the truck, 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 G16. However, if a timing signal is given, step G25
The program advances the recording head 26 by one track, and then returns to step G3 via step G16. Below, the truck control switch 17a, 2
While 04 (+ key) is operated, the step
At G24, the recording head 26 is moved forward one track each time a 4 Hz timing signal is applied.

On the other hand, the determination results of steps G17 and G18 above are
If NO, proceed to steps G26 and G27 and turn on the truck control switches 17b and 2, respectively.
Determine whether or not 04 (- key) has been operated, and if no key has been operated, proceed to step G16.
After that, return to step G3. Step G26 above,
If the determination result in G27 is YES, proceed to step G28 and determine whether the current track number is "1" based on the count value of the track counter. If it is "1", proceed directly to step G16. Return to G3. If it is determined in step G28 that the track number is not "1", the recording head 26 is moved in steps G29 to G34 by performing the same processing as in steps G20 to G25. In this case, in the movement processing of the recording head 26 in steps G31 and G34, "-1 track" processing is performed, contrary to the case of steps G22 and G25. As described above, a track on the magnetic disk 27 is selected and designated, and the recorded image of the designated track is reproduced.

Next, the operation for erasing the recorded image on the magnetic disk 27 will be explained. There are two modes for erasing recorded images: an erasing mode in which tracks are erased one track at a time, and an erasing mode in which all tracks are erased at once. However, if you want to delete recorded images one track at a time,
First, specify the track number you want to erase in playback mode. Next, the erase mode is designated by the main mode switch 4, and the shutter 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 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 program proceeds to step H2, where key inputs are read, step H3, which determines whether the erase mode is in effect, and step H4, which determines whether or not the magnetic disk 27 is mounted. If it is determined in step H3 that the erase mode is not in effect, or if it is determined in step H4 that there is no disk, the process returns to step A3 in FIG. If it is determined in step H4 that there is a disk, the process proceeds to step H5, where it is determined whether or not there is a claw on the disk cassette.
If there is no claw, the process advances to step H6, and after an error is displayed on the LCD 30, the process returns to step H2. If step H5 determines that there is a claw, step
Proceed to step H7 to display the track number on the LCD 30, then proceed to step H8 to turn on the shutter switch.
Determine whether SW2 is on. If the shutter switch SW2 is on, 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.
It rotates at about 1/3 to 1/4 the speed of recording/playback. Then, in step H10, the erase circuit system is turned on, that is, the recording/erase switching circuit 42 is switched to the erase signal source 43 side, and the erase signal source 43 is turned on, for example, for about 1/20 seconds. The erase signal output from the erase signal source 43 is transmitted to the recording/erase switching circuit 4.
2. The data is sent to the recording head 26 via the recording amplifier 44 and the recording/reproduction switching circuit 45, and the recorded content of the designated track on the magnetic disk 27 is erased by the recording head 26. When the 1/20 second has elapsed, the process proceeds to step H10, 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 erase mode operation.

Further, when erasing all recorded contents of the magnetic disk 27, the erase mode is designated by the main mode switch 14, and then the shutter button is operated. If the erase mode is designated, the process proceeds from step A15 to the erase mode process shown in FIG. 12. That is, as shown in step I1, the reproducing circuit system is turned off and the spindle motor 24 is also turned off, and then, in step I2, key input is read. Next, the process proceeds to step I3, where it is determined whether or not the erase mode is in effect, 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 in effect, or if it is determined that there is no disk in step I4, the process returns to step A3 in FIG. If it is determined in step I4 that there is a disk, the process proceeds to step I5, where it is determined whether or not there is a claw on the disk cassette.If there is no claw, an error is displayed on the LCD 30 in step I6, and then the process proceeds to step I5.
Return to I2. If it is determined in step I5 that there is a claw, proceed to step I7 and display "ALL" on the LCD 30 to indicate that all tracks will be erased.
Thereafter, in step I8, it is determined whether the shutter switch SW2 is turned on or not. If it is not turned on, the process returns to step I2 and the above operation is repeated to wait.
If the shutter switch SW is turned on in this state,
Proceed from step I8 to step I9 and record head 2
6 to the first track and step
As shown at I10, the spindle motor 24 is turned on and driven at low speed. Then, in step I11, 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 the erasing mode. After erasing the first track, the process advances to step I12 and the recording head 2 is erased.
6 is moved to the next track, and the track number is displayed on the LCD 30 in step I13. Thereafter, in step I14, it is determined whether the track number has reached "51" or not. If it has not reached "51", the process returns to step I11 and erases the next track. Thereafter, the above steps I11 to I14 are repeated to sequentially erase the recorded contents of each track. Then, when all tracks have been erased, the track number becomes "51", so proceed to step I14.
Proceed to step I15 to connect the spindle motor 24.
At the same time, the erase circuit system is turned off in step I16. Then, in step I17, the recording head 26 is moved to the first track, and then the process returns to step I2 to prepare for the next key input.
This completes the erase mode operation.

In the above embodiment, notification of completion of recording to all tracks, errors, etc. 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 luminance signal demodulation circuit 48
It is sufficient to add a circuit to the circuit of the embodiment to modulate the output signal Y+S of the color demodulation circuit 49 and the output signals R-R, B-Y of the color demodulation circuit 49 into R, G, and B signals to drive the color LCD. .

Further, in the above embodiment, a case was explained in which a mechanical shutter 33 was used, but if the image pickup device 34 is constituted by a CCD, the accumulation time can be controlled only by driving the CCD. You can also eliminate it.
Further, the recording medium is not limited to a magnetic disk, but may also be a magnetic tape, a semiconductor memory, or the like.

[Effects of the Invention] As described in detail above, according to the present invention, an electronic still camera is provided with a reproducing circuit to reproduce recorded images, and the head position information is added to the reproduced image signal reproduced by the reproducing circuit. Since it is combined and supplied to a terminal for outputting to an external output device, recorded images can be played back and displayed on a home TV without going through a playback-only device, and at that time, the image number is also transferred to the recording medium. can be displayed even though it is not recorded.

[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 arrangement of the remote control, and Fig. 3 is a diagram showing the LCD.
FIG. 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 a flowchart showing the local search operation. The figure is a flowchart showing the operation in recording mode, No. 8.
Figure 9 is a flowchart showing the operation of the shutter sequence, Figure 9 is a flowchart showing the operation of the shutter sequence, Figure 10 is a flowchart showing the operation in playback mode, and Figure 11 is a flowchart showing operation in erase mode. Flowchart FIG. 12 is a flowchart showing the operation in the erase mode. DESCRIPTION OF SYMBOLS 11... Timing signal generation circuit, 12... Crystal oscillator, 13... System control unit, 14... Main mode switch, 15... Shutter mode switch, 16... Shutter switch, 17
a, 17b...Truck control switch, 18...AE sensor, 19...AE circuit, 20
...Remote control, 201...Numeric keypad, 202...
Enter key, 203...Record key, 204...
Truck control switch, 205... Shutter control switch, 21... Remote control sensor,
22... Remote control receiving section, 23... Servo control section, 24... Spindle motor, 25... Head moving mechanism section, 26... Recording head, 27... Magnetic disk, 28... Disk detection switch, 29
...Claw detection switch, 30...LCD, 31...
Imaging lens, 32...aperture, 33...shutter,
34...Image sensor, 35...Aperture drive circuit, 36
... Shutter drive circuit, 37 ... Driver, 38
...Video signal processing circuit, 39...Brightness signal processing circuit, 40...Color difference signal processing circuit, 41...Mixing circuit, 42...Record/erase switching circuit, 43...Erasure 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.

Claims (1)

[Claims] 1. An imaging lens, an imaging device that photoelectrically converts an optical image obtained through the imaging lens and outputs an image signal, an image recording medium having a plurality of image recording tracks, and the image output from the imaging device. a recording means for recording a signal on the image recording track of the recording medium; a head for reading out the image signal recorded on the image recording track of the recording medium; and this head reads the image recording track of the plurality of image recording tracks. a head position recording means for recording positional information on which track position the head is located at; a reproduction means for reproducing the image signal read out through the head; and an image signal reproduced by the reproduction means. a superimpose processing circuit that synthesizes the position information of the head position storage means and outputs an image signal containing the head position image; and an image signal containing the head position image output from the superimpose processing circuit that is An electronic still camera characterized by comprising an external output terminal for outputting to a device.