JP2960938B2 - Image playback device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reproducing apparatus capable of effectively grasping the state of an erasing operation on a plurality of pieces of information recorded on a recording medium such as a floppy disk.

[Related Art] In recent years, floppy disks have been actively used as recording media for various kinds of information. Many electronic still cameras that electronically image a subject using a solid-state imaging device such as a CCD are configured to use a floppy disk as a recording medium for recording the electronic still image. The floppy disk used in this type of electronic still camera has a diameter of 2 inches generally called an SVF (still video floppy disk), and the electronic still image is recorded on the disk-shaped magnetic recording surface of the SVF. To 5
About 0 recording tracks are formed concentrically, and an electronic still image is magnetically recorded for each of these recording tracks.

By the way, the reproduction of an electronic still image recorded on this type of SVF is performed, for example, as shown in FIG.
This is performed by loading the F2, reading out the electronic still image recorded on the recording track of the SVF2, and displaying the image using the display 3 such as a television receiver.

For example, as shown in FIG. 4, the image reproducing apparatus 1 rotates the SVF 2 at a predetermined rotational speed by a spindle motor driving unit 11 and a SVF 2 by a head 13 moved in a radial direction of the SVF 2 by a head driving unit 12. The recording track is accessed and information (electronic still image) recorded on the recording track is read or written. The reading and writing of the electronic still image is selectively controlled by switching the switch 14 to connect the head 13 to a signal reproducing system or a signal recording system.

The control unit 15 includes a data management unit 36 having data such as the recording status of the disk, and controls the spindle motor drive unit 11 and the head drive unit 12 according to the operation mode setting information instructed from the operation unit 16 such as a key switch. The operation of each switch is controlled, and the operation of the signal reproducing system and the signal recording system are controlled together with the switching of the switch 14, thereby controlling the reading of the electronic still image from the SVF2 and the writing of the electronic still image to the SVF2.

The signal reproduction system and the signal recording system will be described.
The above signal recording system is basically an input circuit section 21, an FM modulation section 22,
The signal reproduction system includes a recording circuit unit 23, and a signal reproduction system includes a reproduction circuit unit 31, an FM demodulation unit 32, a field memory circuit 33, a signal processing unit 34, an output circuit unit 35, and a character generation circuit 37. You.

The input circuit unit 21 of the signal recording system inputs an electronic still image (video signal; Video) given as an NTSC signal or the like,
The signal is subjected to predetermined signal processing such as conversion into a luminance signal (Y signal) and a color difference signal (RY / BY signal). The FM modulator 22 converts the luminance signal and the color difference signal into FM signals, respectively. Modulate. At this time, the FM modulation unit 22 outputs the color difference signal (RY / BY).
Signal) in line-sequential form. Thus, the recording circuit unit 23 mixes the luminance signal and the chrominance signal FM-modulated as described above, and generates a recording current necessary for signal recording in the SVF 2 by the head 13 according to the mixed signal. . This recording current is supplied to the head 13 via the switch 14, and the electronic still image (video signal; V
ideo) is recorded.

Although the image reproducing apparatus 1 having a function of recording an image signal is shown here, the image reproducing apparatus 1 may of course be configured without the above-described signal recording system (recording function of an image signal). That is.

On the other hand, the reproduction circuit unit 31 of the signal reproduction system reproduces and amplifies the signal read from the SVF 2 from the head 13 via the switch 14 to obtain a reproduction RF signal. FM demodulation unit 32
The signal is FM-demodulated to obtain a luminance signal and a color difference signal, and are recorded in the field memory circuit 33 over one image. The signal processing unit 34 performs, for example, dropout compensation, skew distortion correction, and synchronization processing on a reproduced color difference signal with respect to the reproduced signal obtained from the FM demodulation unit 32 or the reproduced signal recorded in the field memory circuit 33. Signal processing is performed, and the signal subjected to such signal processing is output as a video signal such as an NTSC signal via the output circuit unit 35. Such a video signal is supplied to the display 3 to output and display an electronic still image.

The field memory circuit 33 records and holds the electronic still image read from the SVF2, and repeatedly reads and outputs the electronic still image to realize the continuous image reproduction separately from the reading of the electronic still image from the SVF2. It is for.

Further, the data management unit 36 provided in the signal reproduction system,
For example, prior to reading out an electronic still image from a recording track when the SVF2 is loaded, each recording track of the SVF2 identifies the presence or absence of recording by the envelope level of a reproduction RF signal, and holds the weaving result. An electronic still image is recorded on a recording track, and a recording state indicating which recording track is empty is managed.
The character generation circuit 37 generates character information such as a management number of a recording track on which an image is reproduced, for example, in accordance with an instruction output by referring to the data management unit 36 included in the control unit 15 described above. This character information is superimposed on the NTSC signal via the output circuit section 35, and is used for displaying characters on the display 3.

Now, as another important function of the image reproducing apparatus 1 configured as described above, there is a function of deleting an electronic still image recorded in the SVF 2. This erasing function is, for example, SVF2 where electronic still images are recorded on all recording tracks respectively.
In order to use the electronic still image again by the electronic still camera, the recorded information is erased over all the recording tracks, or unnecessary (unnecessary) in the recorded electronic still image is used. This is a function for selectively erasing an electronic still image corresponding to a recording track. This erasing function is realized by, for example, passing an erasing current of a predetermined bias to the head 13 via the signal recording system to eliminate the signal recording magnetic field (magnetic domain structure) of the SVF2.

[Problems to be Solved by the Invention] However, when such an image reproducing apparatus 1 deletes an electronic still image for SVF2, for example, if a character display off (OFF) mode is set, which recording track However, there is a problem that it is impossible to know whether the information has been erased or whether the erasure of the recording track has been completed, and it is not possible to grasp the erasure state. To solve this problem, by setting the display mode of the recording status managed by the data management unit 36 and performing the erasing operation,
It is possible to check the erasure status. However, there is a problem that it is troublesome to switch display modes one by one (each time).

It was made in view of such circumstances of the present invention,
The purpose is to simplify and effectively confirm the status of the erasing operation on the recorded information recorded on the recording medium.
An object of the present invention is to provide a highly practical image reproducing apparatus that can be grasped.

[Means and Actions for Solving the Problems] An image reproducing apparatus according to the present invention is an image reproducing apparatus for reproducing an electronic still image from a recording medium on which an image is recorded, and selectively sets a plurality of operation modes. Possible mode setting means, and one of a function of erasing all images recorded on the recording medium and a function of selecting an image to be erased among all images recorded on the recording medium are set. Erasing function setting means, image reproducing means for executing an image reproducing mode for selectively reproducing a management number of an image accompanying the reproduced image together with the reproduced image, and erasing mode setting means for setting the erasing mode from the operation mode setting means Determining means for determining whether the erasing mode has been set by the erasing mode setting means; and selectively specifying an image stored in the recording medium as an erasing target. A selection operation means for erasing the image to be erased set by the erasure function setting means or selected by the selection operation means; Display control means for performing display including the management number of the image attached to the target image, and displaying the management number attached to the image together with the image by the image playback means again when the operation in the erasing mode is completed; When the erase mode is executed, the display including the management number of the image to be erased is not required without complicated operation, and the erase mode operation is not performed. When the process is completed, the management number accompanying the image is displayed again together with the image.

Further, it is possible to set either a function of erasing all images by the erasing function setting means for erasing or a function of selecting an image to be erased from all images recorded on the recording medium.

Hereinafter, an image reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings.

The system of this embodiment is applied to, for example, the image reproducing apparatus 1 shown in FIGS. 3 and 4 for reproducing an image signal recorded in SVF2. Leverage image reproduction machine 1
In addition to the function of reading and reproducing and outputting image signals recorded on a plurality of recording tracks of SVF2, the electronic still image recorded on each designated recording track is selectively or A function as erasing function setting means for erasing all electronic still images recorded in SVF2 is incorporated. This erasing function is activated by operating an erasing mode switch as erasing mode setting means incorporated in the operation unit 16 of FIG.

When the electronic still image recorded in the SVF 2 is to be selectively erased, for example, the track number of the recording track to be erased is selectively designated from the operation unit 16 and then the erase mode switch is operated. And so on.

The image reproducing apparatus 1 also has a function of displaying information on the recording status of the electronic still image recorded in the SVF2, and a recording management number of the electronic still image being reproduced and output, for example, a recording track in the SVF2. A function as image reproducing means for displaying information of the indicated track number is incorporated. The display of such information is performed by the operation unit 16.
The operation is selectively performed by operating a display mode switch incorporated in the device. By operating the display mode switch, for example, a mode in which only the reproduced image is displayed (character display OFF mode), a mode in which the track number is displayed together with the reproduced image (track number display mode), and the SVF2 A mode (disc information display mode) for displaying the status of recording of an electronic still image on a plurality of recording tracks is selectively set.

The feature of the system of the present embodiment in the image reproducing apparatus 1 having such a function is that, as shown in FIG. 1, a certain display mode is set to the SVF 2 in a state in which a display mode is set. Erase mode is set,
When the erasing operation is performed, a mode (disc information display mode) for displaying a status of recording an electronic still image on a plurality of recording tracks of the SVF2 is forcibly set in place of the above-described image reproduction output. A function of controlling the display operation so as to return to the original display mode when the erasing operation is completed.

That is, as shown in FIG. 1, in the disc information display mode, information display frames respectively corresponding to a plurality of recording tracks (50 recording tracks in this example) formed concentrically on the SVF 2 are displayed as [10 × 5], a mark corresponding to whether an electronic still image has been recorded on the recording track or has been erased and is empty. Is displayed. The display control of the marks in these information display frames is performed according to the status information of the image recording of SVF2 managed by the data management unit 36. From such a mark display mode, it is possible to know which recording track has the electronic still image recorded thereon, or which recording track has been erased and is empty. Also, how many recording tracks have electronic still images recorded,
In other words, the number of electronic still images recorded is notified.

When the erase mode is set and the electronic still image recorded in SVF2 is erased, the disc display mode is forcibly set in this system regardless of the display mode setting at that time. Then, according to the information on the image recording status of the SVF2 that changes with the execution of the erasing operation, the status of the change in the recording status is displayed in real time. Specifically, when the deletion of the electronic still image recorded on a certain recording track is completed along with the execution of the erasing operation, the information of the image recording status of the SVF2 is updated accordingly, and the display Change information to new updated information. Such a display operation is repeatedly performed over a period in which the erasing operation is performed, and a mark displayed on the information display frame corresponding to the erased recording track is displayed in a state where the electronic still image is recorded. Characters indicating that the recording track is empty It changes sequentially.

Thus, according to the embodiment system in which the disc display mode is forcibly set at the time of executing the erasing operation, and the recording state changing with the progress of the erasing operation is displayed every moment, as described above. From the information, it is possible to effectively (clearly) grasp which recording track has been erased and which recording track has the erasing process left. If the order of erasure for a plurality of recording tracks is predetermined such as to be performed from the innermost side of SVF2, for example, which recording track is currently being erased from the above-described display form Can be grasped. When the erase mode is activated by specifying a recording track to be erased, the mark displayed in the information display frame corresponding to the relevant recording track is a character □ indicating that the electronic still image is recorded. From the character indicating that the recording track is empty By monitoring whether or not the erase operation has been performed, the progress of the erase operation can be grasped.

Then, the erasing process proceeds while displaying the image recording status (erasing status) for the SVF2, and when the erasing operation is completed, the display mode is automatically returned to the display mode set before the erasing operation was started. For example, it is possible to immediately restore the display mode before activating the erase mode, and to continuously perform, for example, the image reproduction processing in the display mode that was being performed before. In other words, the display mode is switched when the erase operation is started, and the erase operation is easily performed while grasping the state of the erase without any troublesome operation such as switching the display mode again upon completion of the erase operation. On top of that, effects such as being able to return to the original use state for the image reproducing device 1 are obtained.

FIG. 2 is a diagram showing an example of a control algorithm in the present system for executing the above-described display mode switching control.

The processing operation will be described. When the SVF 2 is loaded into the image reproducing device 1 (step a), the identification result data relating to the recording status of the electronic still image is read from the SVF 2 and recorded and stored in the data management unit 36. (Step b). The disc information is set, for example, corresponding to each of a plurality of recording tracks managed by a track number, and includes flag information indicating whether an electronic still image is recorded on the recording track. The storage is performed by sequentially reading the flag information in accordance with the order of the track numbers. Such reading of the disk information is performed only once, for example, as an initial operation when the SVF2 is loaded.

After the disk information is read in this manner, the image reproducing apparatus 1 is put in a standby state (initial state) (step c), and waits for the operation mode setting instruction from the operation unit 16 described above. (Step d).

Thus, the operation mode switch in the operation unit 16 (for example, a reproduction switch, a recording switch, an erase switch, a multi-screen display switch, a character display mode switch, etc.)
Is selectively operated, a determination process of the operated switch (specified mode) is started. For example, if only the display control in the present system is described, it is determined whether the erasing mode is instructed by the determination unit. It is determined (step e). If an instruction other than the erase mode is given,
Other processes such as image reproduction and image recording are executed according to the operation mode instruction information obtained by another determination process (step f).

Here, when an erase mode setting instruction is determined and detected at a certain point in time, the operation of the erase process is started. In the erasing process, first, the display mode set at that time is stored in the memory (step g), and the above-described disc information display mode is forcibly set (step h). In this state, according to the disk information (flag information corresponding to the track number) managed by the data management unit 36, the first
The disc information is displayed in the display form shown in the figure (step i), and the erasing operation is executed (step j).

Specifically, as shown in the subroutine of steps A to E, the disk information is read from the data management unit 36 (step A), and the disk information is displayed on the screen (step B). Then, it is checked whether or not there is a recording track designated as an erasure target among the recording tracks on which the electronic still image is recorded (step C). A track is designated and information recorded therein is erased (step D). After that, the disc information is updated by resetting the flag information provided corresponding to the track number indicating the recording track erased in the step D of the data management unit 36 (step E). Such a processing operation is repeatedly executed until there is no recording track to be erased.

Note that, at the time of the erasing operation of the recording track designated by SVF2, the flag information corresponding to the recording track is also reset. However, since the disk information is updated in the data management unit 36 in parallel with this operation as described above, undesired processing such as reading the disk information from the SVF 2 again is not performed. By displaying the screen of the disc information on the basis of only the updating process of the disc information (flag information) to the data management unit 36, the recording status (erasing status) in real time as the erasing operation proceeds.
Is displayed.

When the erasure of the electronic still image on the designated recording track is completed as described above, the display mode is read out before the execution of the erasure operation stored in the memory (step k). Then, the setting is changed to the display mode according to the read display mode (step l), and the screen display control in the display mode before the start of the erasing operation is performed (step m).

With such a display control algorithm, the display processing based on the processing concept shown in FIG. 1 described above is performed in connection with the execution of the erasing operation, and the above-described erasing state can be effectively grasped. The effect can be achieved.

Note that the present invention is not limited to the above-described embodiment. For example, the display screen format of the disk display may be determined according to the system specifications, and its display control algorithm can be variously modified. Also here
Although the example of erasing information recorded on SVF2 has been described as an example, even in a system where multiple information recording areas are set on a recording medium and information is recorded and erased for each area, the recording status display The same function can be implemented by incorporating a function of performing the above. In addition, the present invention can be variously modified and implemented without departing from the gist thereof.

[Effects of the Invention] As described above, according to the present invention, display including the management number of an image to be erased can be performed without requiring a complicated operation, and when the erase mode operation is completed, Since the management number associated with the image is displayed again together with the image, the erasing state can be effectively grasped, and the risk of erroneously erasing a necessary image can be reduced.

Also, since the erasing function setting means for erasing can set either a function of erasing all images or a function of selecting an image to be erased from all images recorded on the recording medium, extra A great effect can be obtained, for example, such that an unnecessary operation unit is not required.

[Brief description of the drawings]

FIG. 1 is a diagram showing a processing concept in an image reproducing apparatus according to an embodiment of the present invention, FIG. 2 is a diagram showing an example of a processing algorithm of display control in the system of the embodiment, and FIG. FIG. 4 is a schematic configuration diagram, and FIG. 4 is a block diagram showing a general configuration example of an image reproducing apparatus. 1 image reproducer, 2 SVF (recording medium), 3 display, 13 head, 15 control unit, 16 operation unit, 33 field memory circuit, 35 output circuit Section, 36 ... Data management section, 37 ... Character generation circuit.

Claims (1)

(57) [Claims] 1. An image reproducing apparatus for reproducing an electronic still image from a recording medium on which an image is recorded, comprising: an operation mode setting means for selectively setting a plurality of operation modes; Function setting means for setting one of a function of erasing all images stored in the storage medium and a function of selecting an image to be deleted from all images recorded on the recording medium; Image reproducing means for executing an image reproducing mode for selectively reproducing a management number of an image attached to the image data; erasing mode setting means for setting an erasing mode from the operation mode setting means; and erasing mode by the erasing mode setting means. Determination means for determining whether or not is set; selection operation means for selectively designating the image stored in the recording medium as an erasure target; When the setting of the erasing mode is determined by the determining means for the image to be erased set by the delete function setting means or selected by the selecting operation means, and the erasing mode is executed, the erasing is performed. A display including a management number of an image accompanying the target image is performed, and when the operation in the erasing mode is completed, the management number accompanying the image is displayed together with the image by the image reproducing unit again. An image reproducing apparatus, comprising: display control means.