JP2816734B2 - Electronic still camera - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention records a video signal on a magnetic disk,
The present invention relates to an electronic still camera capable of reproducing.

[Conventional technology]

In an electronic still camera, a plurality of tracks are formed concentrically on a magnetic disk, and a video signal or an audio signal can be recorded on each track. Conventionally, the signal recorded on this track is reproduced one by one on each track.

[Problems to be solved by the invention]

Thus, in the conventional apparatus, each track is assigned to one track.
I could only play it book by book. As a result, when playing all or a relatively large number of tracks,
Eventually, the operation of reproducing each track one by one must be repeated, which is inconvenient.

The present invention has been made in view of such a situation, and aims to reproduce all or a relatively large number of tracks by one operation.

[Means for solving the problem]

The electronic still camera according to claim 1, wherein the reproducing means reproduces a signal recorded on a track of the disc, and when operated, the reproducing means transmits a signal recorded on a predetermined track of the disc to the reproducing means. First switch means for reproducing, and when operated during the reproducing operation by operating the first switch means, the reproducing means sequentially transmits signals recorded on a plurality of tracks of the disc for a predetermined time. And a second switch means for performing continuous reproduction.

According to a second aspect of the present invention, in the first aspect of the present invention, when the first switch is operated during the reproduction, the reproduction is stopped, and during the continuous reproduction, the second switch is operated. When operated, the continuous reproduction is stopped and the reproduction is performed.

According to a third aspect of the present invention, in the first aspect of the present invention, the second switch is configured to operate another function of the electronic still camera when an external operation is performed when the reproduction is not being performed. The feature is that it is also used as

According to a fourth aspect of the present invention, in accordance with the first to third aspects of the present invention, whether the first switch is operated to reproduce a predetermined track or the second switch is operated. It is characterized in that the display means for identifying and displaying whether continuous reproduction is performed is also used as the display means for displaying other states during non-reproduction.

[Action]

In the electronic still camera according to the first aspect, in the reproduction mode, when continuous reproduction is instructed, the track on the inner circumference or the outer circumference than the track where the magnetic head is located at that time is continuously reproduced.

Therefore, all or a relatively large number of tracks can be continuously reproduced at one time.

In the electronic still camera according to the second aspect, since the continuous playback operation is displayed by also using the display means for displaying other operations, the cost can be reduced and the apparatus can be downsized. Can be.

Further, in the electronic still camera according to the third aspect, since the command for the continuous reproduction operation is input by also using the switch means used for other commands, the cost is reduced and the apparatus is downsized. Can be

〔Example〕

FIG. 1 is a block diagram showing the configuration of an embodiment of the electronic still camera according to the present invention.

A floppy disk (magnetic disk) 1 is a spindle motor 2 controlled by a spindle motor control circuit 3.
, And a predetermined video signal or audio signal is recorded and reproduced by the magnetic head 4 via the recording and reproducing circuit 8. The position of the magnetic head 4 in the disk radial direction is determined by the tracking motor control circuit 6.
It can be moved by a tracking motor 5 controlled by

For example, a system controller 7 composed of a microcomputer or the like controls the tracking motor control circuit 6 and the recording / reproducing circuit 8 and also controls a display control circuit 11 to display predetermined information on a liquid crystal display (LCD) 12. Let it. In addition, the system controller 7 performs control necessary for an operation of recording, reproducing, and erasing information on the floppy disk 1.

The system controller 7 includes a trigger switch (release switch) 9 operated when recording or reproduction is started or ended, an exposure correction switch 10 operated when performing an exposure correction operation, and other modes such as recording, reproduction, and erasing. A signal corresponding to the operation of the mode switch 13 and the select switch 14 operated when selecting and setting various modes is input. Further, by operating the up switch 15 and the down switch 16, the number displayed on the LCD 12 can be increased or decreased. Further, by operating the flash mode switch 17, a predetermined flash mode can be input.

 Next, the operation will be described.

2 (a) to 2 (c) show an embodiment of the display by the LCD 12. FIG.

As shown in these figures, the LCD 12 displays various marks. By operating the mode switch 13, the blinking display position of each mark sequentially moves in the vertical direction, and by operating the select switch 14, the mark moves in the horizontal direction.

For example, each time the mode switch 13 is operated, a blinking display mark indicates a single mode mark (one rectangular mark in the figure) indicating a mode for recording one video signal, a REC mark indicating a recording mode, and a video signal Alternatively, the control sequentially shifts to one of a NORMAL mark indicating a normal mode for recording an audio signal, an AUTO mark of the white balance display mark WB, and a seven-segment element indicating the date, hour, minute, and second.

When the select switch 14 is operated while the single mode mark at the top is blinking, for example, the blinking position is changed to a self-timer mark for setting the self-timer, one, two or five sheets per second. A continuous shooting mark (a mark in which three rectangular marks are superimposed in the figure) indicating a mode for recording a video signal and numbers 1, 2, and 5 indicating the number of continuous shots per unit time are blinked sequentially. It has become.

Similarly, in the second display, a REC mark indicating a recording mode, a PLAY mark indicating a playback mode,
The ERASE mark indicating the erase mode and the MONITOR mark indicating the monitor mode are sequentially displayed.

In the third row, a NORMAL mark indicating a normal mode for recording a video signal or an audio signal, or an AV mark indicating an AV mode for recording a video signal and an audio signal in association with each other is selectively displayed.

In the fourth stage white balance WB mark,
AUTO mark for automatic mode, cloudy mark for cloudy mode (shown as cloudy in the figure), sunny mark for sunny mode (shown in the figure of the sun), A fluorescent lamp mark (indicated by a fluorescent lamp in the figure) indicating the fluorescent lamp mode and an incandescent lamp mode mark (indicated by the incandescent lamp in the figure) indicating the incandescent lamp mode are sequentially selected. Is done.

Further, in the fifth row, numbers of year, month, day (or hour, minute, second) are sequentially selected.

The mark on the left of the date is a battery mark, which is lit or blinking when the battery becomes weak, and the mark on the right is a disk mark indicating whether or not a floppy disk is mounted, and is lit when the disk is mounted. You.

Therefore, by operating the mode switch 13 and the select switch 14, the blinking position can be moved, and the mode represented by the blinking position can be instructed to the system controller 7. The display other than the selected mode changes from blinking to lighting.

Also, by operating the flash mode switch 17, AUTO
Mark, ON mark, and OFF mark light up sequentially.

In this way, specify the recording mode (in this case, REC
When the mark is blinked) When the trigger switch 9 is operated, the system controller 7 drives the spindle motor 2 via the spindle motor control circuit 3 to rotate the floppy disk 1. Further, the tracking motor 5 is driven via the tracking motor control circuit 6, and the magnetic head 4 is moved on a predetermined track. The track position (track number) is indicated by a two-digit number to the left of the REC mark. Then, a predetermined video signal or audio signal is input to the magnetic head 4 via the recording / reproducing circuit 8, and this signal is recorded on a predetermined track of the floppy disk 1.

Prior to this recording, when the exposure compensation switch 10 is operated in the recording mode, the exposure compensation mark ± EF is turned on, and the display of the 7-segment element on the right side thereof indicates the exposure compensation value designated at that time. Is changed to When the up switch 15 or the down switch 16 is operated simultaneously with the exposure compensation switch 10, the exposure compensation value is increased or decreased. When the exposure compensation switch 10 and the trigger switch 9 are operated at the same time, photographing is performed with the exposure set to the compensation value.

When the continuous shooting mode is set during the recording mode, the continuous shooting mark is turned on, and among the numbers 1, 2, and 5, the number corresponding to the selected number of continuous shootings per second is blinking. In this case, when the trigger switch 9 is operated, the specified number of video signals per second are continuously recorded.

Next, the reproducing operation will be described with reference to the flowchart of FIG.

When the reproduction mode is set by operating the mode switch 13 and the selector switch 14, the PLAY mark blinks as shown in FIG. 2 (a). When the trigger switch 9 (first switch means) is operated in this state, as shown in FIG. 2B, the PLAY mark changes from blinking to lighting, and the spindle motor control circuit 3 and the spindle motor 2 are turned on. Then, the floppy disk 1 is rotated, and a reproduction subroutine is executed (steps S1 to S54).

In the reproduction processing subroutine, a mode input of a reproduction track is performed (step S31). That is, the recording / reproducing circuit 8 demodulates the reproduced signal output from the magnetic head 4, and reads the DPSK signal recorded together with the video signal or the control data recorded together with the audio signal. These signals or data include a video signal (V mode) or an audio signal (A
Mode) is recorded, or a signal indicating whether a video signal and an audio signal are recorded correspondingly (AV mode) is included. System controller 7
(Control means) reads the mode information from the output of the recording / reproducing circuit 8.

When in the AV mode, the AV mark is turned on, and the magnetic head 4 (reproducing means) is transferred to the track where the audio signal is recorded via the tracking motor control circuit 6 and the tracking motor 5 (transfer means) (step). S32 to S
34). Then, the track is reproduced, and the reproduction signal is
The data is temporarily stored in a memory incorporated in the recording / reproducing circuit 8 (step S35). Next, the magnetic head 4 is transferred to a track on which the corresponding video signal is recorded, and the video signal is reproduced from the track (steps S36 and S37). This video reproduction signal is supplied to the monitor / speaker 21 and displayed. At this time, the audio signal stored in the memory is expanded and reproduced, and output to the monitor / speaker 21.

In this way, the video signal and the corresponding audio signal are output simultaneously.

On the other hand, when the playback track mode is not the AV mode,
The NORMAL mark is turned on (step S38). And
If the audio signal is recorded, the audio signal is temporarily stored in the memory of the recording / reproducing circuit 8 and then read out and reproduced (steps S39 and S40). If the video signal is recorded, the reproduced signal is
The data is supplied to the speaker 21 and displayed (step S41).

During such a reproducing operation, the exposure compensation switch 10 (second
Is not operated, the trigger switch 9 is operated again, and the reproduction is continued until the end of the reproduction is commanded (steps S5 and S6).

When the trigger switch 9 is operated again and the end of the reproduction is instructed, the rotation of the floppy disk 1 is stopped, and the NO
The RMAL mark or AV mark turns off and the PL
The AY mark shifts from the lighting state to the blinking state again, and returns to the reproduction standby state (steps S7 to S10).

In this way, reproduction of only one track is executed.

On the other hand, when the exposure compensation switch 10 is operated during the reproduction operation, the continuous shooting mark is turned on as shown in FIG. 2C (steps S4 and S11). Then, the mode of the reproduction track is determined, and if the mode is the V mode, the system controller 7 operates a built-in interval timer (step S13). When the interval timer measures a preset time (for example, 5 seconds), the magnetic head 4 is transferred to the inner circumference (or outer circumference) of one track via the tracking motor 5 (steps S14 and S22). At this time, the LCD
The track number displayed in 12 is also incremented by one. Then, as in the case described above, a reproduction processing subroutine is executed (step S23).

This operation is repeated, and the video signal is reproduced and output sequentially and sequentially from each track for 5 seconds.

When the magnetic head 4 reaches the last track (the innermost track), the first track (the outermost track)
Is transferred to Thus, all the tracks of the floppy disk 1 are sequentially reproduced.

If the exposure compensation switch 10 is operated again and the stop of the interval playback is commanded before the interval timer times the predetermined time, the interval playback mode is canceled and the continuous shooting mark is turned off (step S15, S17). Then, control goes to a step S6.

When the trigger switch 9 is operated again before the interval timer has counted the predetermined time and the stop of the reproduction is instructed, the continuous shooting mark is turned off and the reproduction is stopped (steps S16, S18, S7 to S10). .

Next, when the reproduction track is in the A mode or the AV mode and is related to the audio signal, the reproduction time of the audio signal has priority over the time set by the interval timer, and the video signal is reproduced until the reproduction audio ends. When the audio signal ends, the process shifts to reproduction of the next track (step S19,
S22).

In the case of the AV mode, the corresponding audio signal is recorded on the inner track of the currently reproduced video track, and at this time, the magnetic head 4 is moved two tracks to the next video track. In the AV mode, the number of the video track is displayed instead of the number of the audio signal track.

If the exposure compensation switch 10 or the trigger switch 9 is operated again before the reproduction sound ends, the interval reproduction or the reproduction is stopped as in the case described above (steps S20, S21, S17, S18). .

In the case of the above embodiment, originally, the continuous shooting mark displayed when the continuous shooting mode is set is displayed in the continuous playback mode, but a mark dedicated to the continuous playback mode is provided and displayed. You can also. However, doing so requires an increase in the area of the LCD 12, which is disadvantageous. Therefore, as in the embodiment,
It is preferable to use a mark used for another display.

Also, the double-purpose mark may be a mark other than the continuous shooting mark, but the continuous shooting mark is displayed when the operation is continuously performed. In that sense, when displayed together with the PLAY mark, the continuous playback mode is set. There is an effect that the user can easily recognize that

Further, in the above embodiment, the continuous reproduction mode is selected by the exposure compensation switch 10 having another function, but a dedicated switch may be provided. However, when used in common as in the embodiment, it is possible to prevent an increase in the number of components, the number of wirings, and the like, an increase in cost, and an increase in the size of the apparatus.

〔The invention's effect〕

As described above, according to the electronic still camera of the first aspect, the first switch means and the second switch can reproduce not only each track one by one but also all the tracks continuously. It becomes possible by operating the means, and the operability is improved.

According to the electronic still camera of the second aspect, it is possible to start and stop the independent reproduction every time the first switch is operated, and to start and reproduce the continuous reproduction every time the second switch is operated. Since it is possible to return to, the operability is improved.

According to the electronic still camera of the fourth aspect, the display means for displaying another operation is also used for displaying that the operation is a continuous reproduction operation, so that the cost and the size of the apparatus are increased. Can be prevented.

According to the electronic still camera of the third aspect, the switch means used for the command of another operation is also used for the continuous reproduction operation, thereby preventing an increase in cost and an increase in size of the apparatus. Can be.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing the configuration of an embodiment of an electronic still camera according to the present invention, and FIGS. 2 (a) to (c) show LCD displays in the embodiment of FIG. FIGS. 3 (a) and 3 (b) are flowcharts for explaining the reproducing operation of the embodiment of FIG. 1 Floppy disk 2 Spindle motor 3 Spindle motor control circuit 4 Magnetic head 5 Tracking motor 6 Tracking motor control circuit 7 System controller 8 Recording / reproducing circuit 9 Trigger switch 10 Exposure compensation switch 11 Display control circuit 12 Liquid crystal display 13 Mode switch 14 Select switch 15 Up switch 16 Down switch 21 Monitor / speaker

──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. ⁶ Identification code FI H04N 5/781 H04N 5/781 520E

Claims (4)

(57) [Claims] 1. A reproducing means for reproducing a signal recorded on a track of a disk, and a first switch which, when operated, causes the reproducing means to reproduce a signal recorded on a predetermined track of the disk. And a second means for causing the reproducing means to successively reproduce signals recorded on a plurality of tracks of the disk sequentially for a predetermined time when operated during the reproducing operation by operating the first switch means. An electronic still camera, comprising: switch means. 2. The reproduction means stops the reproduction when the first switch means is operated during the reproduction, and the reproduction means when the second switch means is operated during the continuous reproduction. 2. The electronic still camera according to claim 1, wherein the operation is stopped and the process returns to the reproduction. 3. The electronic apparatus according to claim 1, wherein said second switch means is also used as a switch means for operating other functions of said electronic still camera when operated when said reproduction is not being performed. Electronic still camera. 4. A display means for discriminating whether the first switch means is operated to reproduce a predetermined track or the second switch means is operated to reproduce continuously. 4. The electronic still camera according to claim 1, wherein the electronic still camera also serves as a display unit for displaying another state during reproduction.