JP3104464B2 - Image data processing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to image data
The present invention relates to an image data processing device such as an electronic still camera that records and reproduces an image.

[0002]

2. Description of the Related Art Conventionally, a camera for imaging and recording still image data is generally a film camera for exposing an optical image to a silver halide film, or a still image data imaged by a solid-state image sensor on a floppy disk. A floppy camera for recording and the like has been put to practical use.

Here, some of the cameras record the date of photographing simultaneously. In the case of the film camera, the date data is directly imprinted on the film. In the case of a floppy camera, a recording track on a floppy disk is used as a track for recording date data, and the date data is written in accordance with the number of recording tracks for still image data.

[0004]

Here, in the above-mentioned film camera, the photographing date is inevitably advanced in the film winding order, but in the above-mentioned floppy camera, once-recorded still image data can be deleted. Therefore, when the erasure of the still image data and the photographing and recording are repeated, the photographing date is output before and after the reproduction of the still image data.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has an image data processing apparatus capable of outputting data in the order of shooting dates when reproducing still image data of a plurality of images. The purpose is to provide.

[0006]

That is, an image data processing apparatus according to the present invention records and reproduces a plurality of still image data on a storage medium. The image data processing apparatus records the plurality of still image data on the storage medium. Recording means, date data recording means for recording date data corresponding to each still image data recorded on the storage medium on the storage medium, and determination means for determining the magnitude relationship between the date data recorded on the storage medium And an order storage means for storing an order according to the magnitude relation of the date data obtained by the determination means;
Playback means for playing back the still image data recorded on the storage medium in the order of storage in the storage means .

[0007]

[ Function ] That is, for example, a floppy disk (storage medium)
Each still image data recorded on the index track of
The corresponding imaging date data is temporarily stored in the date data recording means.
Be recorded. The order of the imaging date is the size of date data
The recording track No. of the still image data
Are sorted based on the attached data and stored in the order storage unit.
Therefore, based on the stored track No.
Moves the input / output magnetic head to the
If this is done, the multiple still image data recorded on the floppy disk
The data is sequentially output and reproduced in the order of the imaging date.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a first electronic circuit in an electronic still camera equipped with the image data processing device of the present invention.

FIG. 2 is a block diagram showing the configuration of a second electronic circuit in an electronic still camera equipped with the image data processing device of the present invention. In FIG. 1 and FIG.
Is a control unit. The control unit 10 controls the operation of each part of the circuit according to the release switch and the reproduction key in the release switch and the operation command key 11, or the switch and key operation of the mode switching key of the recording / reproduction mode. .

For example, in the recording mode, the imaging unit 12
Is provided with an optical system such as an imaging lens, and a CCD image sensor, and optically forms a subject image captured by a user through a finder on a pixel area of the image sensor. A still image obtained by the imaging unit 12 The data imaging signal is output to the decoder 13.

The decoder 13 separates an input image signal into a luminance signal (Y) and color difference signals (RY) (BY), and separates the luminance signal (Y) from the decoder 13 from the luminance signal (Y). The color difference signals (RY) and (BY) are all F
The signal is supplied to the M modulator 14. The FM modulator 14 converts the signals (Y) (RY) (B)
−Y) are FM-modulated and superimposed.
The image signal modulated and superimposed by the M modulator 14 is output to the magnetic disk device 16 via the switch circuit 15,
The data is recorded on a floppy disk through the magnetic head.

In this case, the floppy disk of the magnetic disk device 16 has a recording area of, for example, 50 tracks,
On tracks 1 to 49, still image data is written on each track, and on the 50th track (index track), imaging date data is written corresponding to each recording track of the still image data. It is.

The inter-track movement control of the magnetic head in the magnetic disk drive 16 is performed by a head control signal from the control unit 10 via the head movement control unit 17.

On the other hand, in the reproduction mode after the imaging and recording of the subject image is completed, the magnetic disk drive 1
The image signal recorded on the floppy disk No. 6 is output to the demodulation unit 19 via the switch circuit 18.

The demodulation unit 19 is provided for the magnetic disk drive 16
Demodulates the image signal read from the floppy disk and separates it into a luminance signal (Y) and a color difference signal (RY) (BY). NTSC (National T
elevision System (Commitee) video signal Vide
is converted to o and output to the video playback terminal of a monitor television, for example.

Here, the switch circuits 15 and 18 are switched by a switch control signal from the control unit 10 when writing and reading the imaging date data with respect to the index track on the floppy disk of the magnetic disk device 16 respectively. The index data is exchanged with the control unit 10 by the data signal processing unit 21.
Write / read processing.

The control unit 10 is connected to a date counter 22 for counting the Christian era and date data, and a date data storage unit 23 for storing imaging date data for the index track of the floppy disk. The date data storage unit 23 Is designated by the address control unit 24 in correspondence with each still image recording track of the floppy disk.

That is, the date data storage section 23 has date data storage addresses corresponding to tracks 1 to 49 of the floppy disk, respectively, and the image pickup date data based on the count data of the date counter 22 is written in each of them. Be included.

On the other hand, the control unit 10 and the date data storage unit 23
The first and second registers 25a and 25b are connected to a data transfer line between the first and second registers. The first and second registers 25a and 25b are respectively provided with the address control unit 24.
This stores imaging date data corresponding to the memory address of the date data storage unit 23 specified by
The imaging date data stored in the second registers 25a and 25b are sent to the first comparing unit 26, and the date data stored in the first registers 25a are stored in the second registers 25b.
Is determined to be less than or equal to the date data stored in. The comparison result data from the first comparing unit 26 is output to the control unit 10.

The address controller 24 includes a controller 1
Count data from a track No counter 27 that performs a count operation by a counter control signal from 0 is given,
The track number counter 27 has a track number storage unit 28
Is connected.

The control unit 10 is connected to a last track number storage unit 29, which counts the count track number in the track number counter 27 and the last track number storage unit 29.
Is compared with the last track No. in the second comparing unit 30.

The second comparing section 30 determines whether or not the track number of the floppy disk sequentially counted by the track number counter 27 exceeds the last recording track number. The comparison determination signal is output to the control unit 10.

The track number storage 28 stores the first register 25a and the second register 2 in the first comparator 26.
5b stores the track number in the track number counter 27 when the result of comparison of the date data with “5b” is “first register> second register”. It is provided to an order storage unit 31 connected to the control unit 10.

That is, the date data storage unit 23, the address control unit 24, the first register 25a, and the second register 2
5b, the first comparing section 26, the track number counter 27, the track number storing section 28, the last track number storing section 29, and the second comparing section 30 obtain a track number having the minimum date data in each recording track of the floppy disk. so,
Each time the memory address is advanced by the address counter 32, the track number having the larger date data is written into the order storage section 31 in ascending order of the date data.

The control unit 10 is connected to a number storage unit 33 for storing the number of still images recorded on the floppy disk.
A third comparing unit 34 is connected between the second comparing unit 34 and the second comparing unit 34.

The third comparing section 34 compares the total number of still image data recorded on the floppy disk with the number of track numbers written in ascending order of date data in the order storage section 31 and writes the data in the order storage section 31. The number of tracks, that is, the count data of the address counter 32 is
This is to compare and determine whether or not the number of recorded still images has been exceeded.
The comparison determination signal from the third comparing unit 34 is output to the control unit 10.

Next, the operation of the electronic still camera having the above configuration will be described. FIG. 3 is a flowchart showing an image capturing and recording process in the electronic still camera.

That is, to capture a subject image,
When the imaging recording mode is set by operating the mode switching key, the control unit 10 releases the release switch and the operation command key 1.
The recording mode is set in accordance with the mode switching key operation signal from 1.

Then, the control unit 10 controls the magnetic disk device 1
6, a disk device control signal is supplied, the date data of each still image recording track recorded on the index track of the floppy disk is read, and transferred to the date data storage unit 23 via the switch circuit 18 → data signal processing unit 21. (Step R1).

Here, if there is no operation of turning off the power of the camera or the operation of ejecting the floppy disk, the control unit 10 sends the magnetic disk device 1 through the head movement control unit 17.
6 searches for an empty track on the floppy disk (steps R2 and R3).

When the empty track is searched, the magnetic disk drive 1 is
The magnetic head No. 6 is set to move to a free track position of the floppy disk (steps R4, R5).

At this time, the memory address of the date data storage unit 23 corresponding to the empty track of the floppy disk is set by the address control unit 24 (step R6).

Thereafter, when the user captures the subject image through the viewfinder and operates the release switch,
An imaging signal obtained by the imaging unit 12 is converted into a luminance signal (Y) and a color difference signal (RY) (BY) via the decoder 13.
After being FM-modulated and superimposed via the FM modulator 14, the data is sent to the magnetic disk device 16 through the switch circuit 15, and the still image is recorded on the empty track of the floppy disk via the preset magnetic head. It is recorded as image pickup data (steps R7, R8).

At this time, the imaging date data is written from the date counter 22 to the memory address of the date data storage section 23 corresponding to the floppy disk track on which the imaging data has been recorded (step R9).

On the other hand, in step R7, when the release switch is not operated and the camera power is turned off or the floppy disk is ejected, each of the date data stored in the date data storage unit 23 is stored. The shooting date data corresponding to the still image recording track is
The data is transferred from the control unit 10 to the magnetic disk device 16 via the data signal processing unit 21 and the switch circuit 15, and is written again to the index track of the floppy disk (steps R7 → R10, R11).

If the power of the camera is turned off or the floppy disk is ejected in step R2, or if the empty track of the floppy disk is not searched in step R4, the process proceeds to step R11. The imaging date data corresponding to each still image recording track stored in the date data storage unit 23 is transmitted from the control unit 10 to the data signal processing unit 21.
And the magnetic disk drive 16 via the switch circuit 15
To be written to the index track of the floppy disk again.

When the image of the subject is picked up in this manner, still image pick-up data is recorded on an empty track of the floppy disk, and an index track of the floppy disk is associated with the still image recording track. Imaging date data is recorded.

FIG. 4 is a first half flowchart showing a process of reproducing image data in the electronic still camera. FIG. 5 is a second half flowchart showing a reproduction process of the image data in the electronic still camera.

That is, when the imaging data reproduction mode is set by operating the mode switching key to reproduce the imaging data, the control unit 10 responds to the mode switching key operation signal from the release switch and the operation command key 11. To set the playback mode.

Then, the control unit 10 controls the magnetic disk device 1
6, a disk device control signal is supplied, the date data of each still image recording track recorded on the index track of the floppy disk is read, and transferred to the date data storage unit 23 via the switch circuit 18 → data signal processing unit 21. (Step P1).

Here, the still image recording tracks on the floppy disk are 1 to 5 tracks, and the date data recorded on the index tracks corresponding to the 1 to 5 tracks are "Track 1: 6 days" in the same year and month, respectively. "Track 2: 7 days""Track 3: 7 days""Track 4: 3"
Day "and" Track 5: 4th ".

Then, the last track No. in the date data storage unit 23, in this case, "Track 5" is read out by the control unit 10 and transferred to and stored in the last track No. storage unit 29 (step P2). Similarly, the number of recorded still images, in this case, "5", is stored in the number storage 33 (step P3).

After the track number counter 27 is reset by the control unit 10, the count data (in this case, track "1") of the track number counter 27 is stored in the track number storage unit (register) 28 (see FIG. 4). Steps P4 and P5).

At this time, the address control unit 24 specifies the memory address of the date data storage unit 23 corresponding to the track No. “1” stored in the track number counter 27, and The date data stored at the specified address, in this case, the date data "6th" corresponding to the track "1" is stored in the first register 25a (step P6).

Here, the count data of the track No. counter 27 is incremented by (+1) to become track "2", and this count data "2" is stored in the last track No. storage section 29.
The second comparator 30 compares and determines whether or not the last track No. “5” stored in advance has been exceeded, that is, whether or not the search for date data has been completed for all recording tracks (steps P7 and P8).

In this case, in step P8, since the current counter track No. is "2" and the last track No. is "5", it is determined to be "No", and it is determined that the track No. "2" is the minimum date data. It is determined whether or not the indicated selection flag is set (step P9). Then, the date data storage unit 2 corresponding to the current counter track No. “2”
The third date “7 days” is stored in the second register 25b (step P10).

Then, the date data of the still image recording track stored in the first register 25a is stored in the second register 25a.
It is determined whether or not it is equal to or less than the date data of the still image recording track stored in b (step P11).

In this case, "6 days" corresponding to track No. "1" is stored in the first register 25a, and "7 days" corresponding to track No. "2" is stored in the second register 25b. Therefore, "Yes" is determined in step P11, and the process returns to step P7 again.

Thereafter, when the process proceeds to steps P7 to P11,
The first register 25a stores "6 days" corresponding to the track No. "1", and the second register 25b stores the track No.
Since "7 days" corresponding to "3" is stored, "Yes" is determined again, and the process returns to Step P7.

Further, when proceeding to steps P7 to P11,
The first register 25a stores "6 days" corresponding to the track No. "1", and the second register 25b stores the track No.
Since "3 days" corresponding to "4" is stored, "N"
o ", and the track number" 4 "is read from the track number counter 27 and stored in the track number storage unit 28 (step P12). And the second register 2
Date data stored in 5b ("3 days" in this case)
Is transferred and stored in the first register 25a (step P
13) Return to step P7 again.

Here, when proceeding to steps P7 to P11,
The first register 25a stores "3 days" corresponding to the track No. "4", and the second register 25b stores the track No.
Since "4 days" corresponding to "5" is stored, "Ye
s "and the program returns to Step P7.

Further, in step P7, the track
When the count data of the No counter 27 is incremented by (+1) and becomes track "6", the second comparing section 30 determines that the track has exceeded the last track "5".
Is determined to be "Yes", and the track No. (in this case, "4") having the minimum date data previously stored in the track No. storage unit 28 in step P12 is transferred and stored in the order storage unit 31 (step P14).

Then, the memory address of the date data storage unit 23 corresponding to the track No. “4” in the track No. storage unit 28 is specified by the address control unit 24, and a selection flag is set for the memory address ( Steps P15 and P16).

At this time, the count data in the address counter 32 is incremented (+1), the track No. memory address in the order storage section 31 is advanced, and the count data of the address counter 32 is stored in the number storage section 3.
3, whether or not the number of still image recording tracks stored (in this case, “5”) has been exceeded, that is, whether or not the writing process of the date data of all the still image recording tracks in the small order in the order storage unit 31 has been completed. Are compared by the third comparing unit 34 (steps P17 and P18).

In this case, the number of still image recording tracks stored in the number storage section 33 is "5", and the count data of the address counter 32 is "2". The counter 27 is reset, and the track instruction No. is set to "1" (step P19). Then, it is determined whether or not the selection flag is set in the date data of the date data storage unit 23 corresponding to the track instruction No (step P20).

In this case, since the selection flag is not set for the date data "6th" corresponding to the track No. "1", "No" is determined in step P20, and the process returns to step P5.

At this time, the track number "1" is transferred and stored again from the track number counter 27 to the track number storage unit 28, and the date data "6th" corresponding to the track number "1" is stored. From the unit 23 to the first register 2
5a is transferred and stored (steps P5 and P6).

Then, the processing of steps P7 to P11 is repeated to compare the date data "6" of the track No. "1" with the date data "7th" of the track No. "2" and the track No. "3". After the determination is made, when the track number of the track number counter 27 is counted up to the track "4" in Step P7, this track
Since the selection flag is set in advance in step P16 for the date data “3rd” in the date data storage unit 23 corresponding to No. “4”, “Ye” is set in step P9.
s ", and the process returns to Step P7.

At this time, the track number of the track number counter 27 is counted up to the track "5", and when the date data "4th" is stored in the second register 25b (steps P7 to P10), the first comparison is performed. In the unit 26, it is determined that the date is smaller than the date data "6th" of the first register 25a, and the track No. "5" is read out from the track No. counter 27 and transferred and stored in the track No. storage unit 28 (step). P11, P12).

After the date data "4 days" corresponding to the track "5" stored in the second register 25b is transferred and stored in the first register 25a, the track No.
The count data in the counter 27 is track “6”.
(Step P13 → P7).

Then, the second comparing section 30 determines that the track has exceeded the last track "5", and therefore, the step P8
Is determined to be “Yes”, and the track No. (in this case, “5”) having the second minimum date data previously stored in the track No. storage unit 28 in step P12 is transferred and stored in the order storage unit 31 (step P12). P14).

Then, the memory address of the date data storage unit 23 corresponding to the track No. “5” in the track No. storage unit 28 is specified by the address control unit 24, and a selection flag is set for the memory address ( Steps P15 and P16).

At this time, the count data in the address counter 32 is incremented (+1), the track No. memory address in the order storage section 31 is advanced, and the count data of the address counter 32 is stored in the number storage section 3.
3, whether or not the number of still image recording tracks stored (in this case, “5”) has been exceeded, that is, whether or not the writing process of the date data of all the still image recording tracks in the small order in the order storage unit 31 has been completed. Are compared by the third comparing unit 34 (steps P17 and P18).

In this case, the number of still image recording tracks stored in the number storage section 33 is "5", and the count data of the address counter 32 is "3". The counter 27 is reset, and the track instruction No. is set to "1" (step P19).

Then, it is determined whether or not a selection flag is set in the date data of the date data storage unit 23 corresponding to the track instruction No (step P20). In this case, since the selection flag is not set for the date data “6th” corresponding to the track No. “1”, step P2
If it is 0, it is determined as “No”, and the process returns to Step P5.

At this time, the track No. 1 is transferred and stored again from the track No. counter 27 to the track No. storage unit 28, and the date data "6th" corresponding to the track No. "1" is stored. From the unit 23 to the first register 2
5a is transferred and stored (steps P5 and P6).

Then, the processing of steps P7 to P11 is repeated to compare the date data "6th" of the track No. "1" with the date data "7th" of each of the track No. "2" and the track No. "3". After the determination is made, when the track number of the track number counter 27 is counted up to the track "4" in Step P7, this track
Since the selection flag is set in advance in step P16 for the date data “3rd” in the date data storage unit 23 corresponding to No. “4”, “Ye” is set in step P9.
s ", and the process returns to Step P7.

Further, in step P7, the track No.
When the track No. of the counter 27 is counted up to the track “5”, a selection flag is set in advance in step P16 for the date data “4th” in the date data storage unit 23 corresponding to the track No. “5”. Therefore, "Yes" is determined in step P9, and the process returns to step P7.

Then, the count data in the track number counter 27 is counted up to the track "6" again (step P7). Thereby, the second comparison unit 30
In step P8, it is determined that the track has exceeded the last track "5", so that "Yes" is determined in step P8, and the track No. having the third minimum date data stored in the track No. In this case, "1") is transferred and stored in the order storage unit 31 (step P14).

Then, the memory address of the date data storage unit 23 corresponding to the track No. “1” in the track No. storage unit 28 is specified by the address control unit 24, and a selection flag is set for the memory address ( Steps P15 and P16).

At this time, the count data in the address counter 32 is incremented (+1), the track No. memory address in the order storage section 31 is advanced, and the count data of the address counter 32 is stored in the number storage section 3.
3, whether or not the number of still image recording tracks stored (in this case, “5”) has been exceeded, that is, whether or not the writing process of the date data of all the still image recording tracks in the small order in the order storage unit 31 has been completed. Are compared by the third comparing unit 34 (steps P17 and P18).

In this case, the number of still image recording tracks stored in the number storage section 33 is "5", and the count data of the address counter 32 is "4". The counter 27 is reset, and the track instruction No. is set to "1" (step P19). Then, it is determined whether or not the selection flag is set in the date data of the date data storage unit 23 corresponding to the track instruction No (step P20).

In this case, since the selection flag was set for the date data "6th" corresponding to the track No. "1" in step P16, "Ye" is set in step P20.
s ", and the count data of the track No counter 27 is counted up to the track" 2 "(step P21). In this case, since the selection flag is not set for the date data “7th” corresponding to the track No. “2”, “No” is determined in Step P20, and the process returns to Step P5.

At this time, the track number “2” is transferred and stored from the track number counter 27 to the track number storage unit 28, and the date data “7th” corresponding to the track number “2” is stored in the date data storage unit. 23 to the first register 25
The data is transferred and stored in a (steps P5 and P6).

Then, by comparing the date data "7th" of the track No. "3" with the date data "7th" of the track No. "3" by the processes of steps P7 to P11, the process proceeds to step P7. When the track No. of the track No. counter 27 is counted up to the track "4", the date data "3 days" in the date data storage unit 23 corresponding to the track No. "4" is previously stored in the step P.
Since the selection flag has been set at 16, “Yes” is determined at step P 9, and the process returns to step P 7.

Further, in step P7, the track No.
When the track No. of the counter 27 is counted up to the track “5”, a selection flag is set in advance in step P16 for the date data “4th” in the date data storage unit 23 corresponding to the track No. “5”. Therefore, "Yes" is determined in step P9, and the process returns to step P7.

Then, the count data in the track No counter 27 is counted up to the track "6" again (step P7). Thereby, the second comparison unit 30
In step P8, it is determined that the track has exceeded the last track "5", so that "Yes" is determined in step P8, and in step P5, the track No. having the fourth minimum date data stored in the track No. storage unit 28 in advance. In this case, “2”) is transferred and stored in the order storage unit 31 (step P14).

Then, the memory address of the date data storage unit 23 corresponding to the track No. “2” in the track No. storage unit 28 is specified by the address control unit 24, and a selection flag is set for that memory address ( Steps P15 and P16).

At this time, the count data in the address counter 32 is incremented (+1), the track No. memory address in the order storage section 31 is advanced, and the count data of the address counter 32 is stored in the number storage section 3.
3, whether or not the number of still image recording tracks stored (in this case, “5”) has been exceeded, that is, whether or not the writing process of the date data of all the still image recording tracks in the small order in the order storage unit 31 has been completed. Are compared by the third comparing unit 34 (steps P17 and P18).

In this case, the number of still image recording tracks stored in the number storage section 33 is "5", and the count data of the address counter 32 is "5". The counter 27 is reset, and the track instruction No. is set to "1" (step P19).

Then, it is determined whether or not a selection flag is set in the date data of the date data storage unit 23 corresponding to the track instruction No (step P20). In this case, since the selection flag was set in the above-mentioned step P16 for the date data "6th" corresponding to the track No. "1", "Yes" is determined in step P20, and the count data of the track No. The count is increased to track "2" (step P21).

Since the selection flag was set in the above-mentioned step P16 for the date data "7th" corresponding to the track No. "2", "Yes" in step P20.
And the count data of the track No counter 27 is counted up to the track “3” (step P).
21).

In this case, since the selection flag is not set for the date data “7th” corresponding to the track No. “3”, “No” is determined in Step P20, and the process returns to Step P5. At this time, the track No. “3” is transferred and stored from the track No. counter 27 to the track No. storage unit 28, and the date data “7th” corresponding to the track No. “3” is stored from the date data storage unit 23 to the The data is transferred and stored in one register 25a (steps P5 and P6).

After the selection flags of the track No. "4" and the track No. "5" are confirmed by the processing in steps P7 to P9, the count data in the track No. 6 ". As a result, the second comparing section 30 determines that the last track “5” has been exceeded, so that “Ye” is selected in step P8.
s ", and the track No. (in this case," 3 ") having the fifth minimum date data previously stored in the track No. storage unit 28 in step P5 is transferred and stored in the order storage unit 31 (step P14). .

Here, the track number of the still image recording track on the floppy disk is stored in the order storage unit 31 in the order of date data “3 days” → “4 days” → “6 days” → “7 days”.
On the day, track "4" → "5" → "1" → "2" →
This means that "3" is stored in an array.

Thereafter, the memory address of the date data storage unit 23 corresponding to the track No. "3" in the track No. storage unit 28 is designated by the address control unit 24, and a selection flag is set for the memory address. (Steps P15 and P16).

At this time, the count data in the address counter 32 is incremented by (+1), the track No. memory address in the order storage section 31 is advanced, and the count data in the address counter 32 is stored in the number storage section 3.
3, whether or not the number of still image recording tracks stored (in this case, “5”) has been exceeded, that is, whether or not the writing process of the date data of all the still image recording tracks in the small order in the order storage unit 31 has been completed. Are compared by the third comparing unit 34 (steps P17 and P18).

In this case, the number of still image recording tracks stored in the number storage section 33 is "5", and the count data of the address counter 32 is "6". The count data of the counter 32 is reset, and the track number (in this case, “4”) of the head memory address in the order storage unit 31 is specified (step P22).

Here, when the reproduction key is operated without turning off the camera power or ejecting the floppy disk, the first track No. indicated in the order storage unit 31 (in this case, “4”) The head movement control unit 17 is controlled on the basis of the above, and the magnetic head in the magnetic disk device 16 is moved to the track "4" of the floppy disk.
The position is set to move (steps P23 to P25).

Then, in the magnetic disk device 16, the still image data recorded on the track “4” of the floppy disk is read, and the switch circuit 18 and the demodulation unit 19 are read.
Is output and reproduced from the encoder 20 as a video signal of the NTSC system via the PPC (step P26).

As a result, first, a still image recorded on track "4" of the floppy disk and having an imaging date of "3 days" is reproduced. Thereafter, when the playback key is further operated without turning off the camera power or ejecting the floppy disk, the address counter 32 is counted up, and the order storage section 31 is operated.
Is designated (steps P27 to P29).

Then, in the magnetic disk device 16, the still image data recorded on the track “5” of the floppy disk is read, and the switch circuit 18 and the demodulation unit 19 are read.
Is output and reproduced as an NTSC video signal from the encoder 20 via the PPC (step P26).

As a result, following the reproduction of the still image picked up on the “three days”, the still image recorded on the track “5” of the floppy disk and having the picked up date “fourth” is reproduced. become.

Thereafter, when the reproduction key is repeatedly operated, the processing of steps P27 to P29 → P25 and P26 is repeatedly executed, and the still image whose imaging date recorded on track “1” of the floppy disk is “6th” The still image recorded on the track "2" and having the imaging date of "7th day" and the still image data recorded on the floppy disk in the order of the imaging date are output and reproduced.

Therefore, according to the electronic still camera having the above configuration, the image pickup date data corresponding to each still image data recorded on the index track of the floppy disk is
Once the data is read out to the date data storage unit 23 and the still image recording tracks are arranged and stored in the order storage unit 31 in the order of the imaging date, the magnetic disk drive 16 is read out based on the track numbers stored in the order storage unit 31. By controlling the movement of the magnetic head, a plurality of still image data recorded on the floppy disk is sequentially output and reproduced in the order of the imaging date.

[0096]

As described above, according to the present invention, a plurality of still image data are recorded and reproduced on a storage medium, and the image data recording means for recording a plurality of still image data on the storage medium; Date data recording means for recording date data corresponding to each still image data recorded on the storage medium on the storage medium, determination means for determining the magnitude relationship between the date data recorded on the storage medium, and this determination means Notation that stores the order according to the magnitude relation of date data obtained by
Storage means and reproduction means for reproducing the still image data recorded on the storage medium in the order stored in the order storage means. , Smooth according to the order of shooting date
An image data processing device capable of outputting data to a computer can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a first electronic circuit in an electronic still camera according to an embodiment of the image data processing device of the present invention.

FIG. 2 is a block diagram showing a configuration of a second electronic circuit in the electronic still camera according to one embodiment of the image data processing device of the present invention.

FIG. 3 is a flowchart showing an image recording process in the electronic still camera.

FIG. 4 is a first half flowchart showing a reproduction process of image data in the electronic still camera.

FIG. 5 is a second half flowchart showing a process of reproducing image data in the electronic still camera.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Control part, 11 ... Release switch and operation command key, 12 ... Imaging part, 13 ... Decoder, 14 ... FM modulation part, 15, 18 ... Switch circuit, 16 ... Magnetic disk device, 17 ... Head movement control part, 19 ... Demodulation unit, 20 encoder, 21 data signal processing unit, 22 date counter, 23 date data storage unit, 24 address control unit
25a ... first register, 25b ... second register, 26 ...
First comparison unit, 27: track number counter, 28: track number storage unit, 29: last track number storage unit, 30: second
Comparison unit, 31 ... order storage unit, 32 ... address counter,
33: Number storage unit; 34: Third comparison unit.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04N 5/76-5/956 G11B 27/10 H04N 5/225

Claims (1)

(57) [Claims] 1. An image data processing apparatus for recording and reproducing a plurality of still image data on a storage medium, comprising: image data recording means for recording a plurality of still image data on the storage medium; Date data recording means for recording date data corresponding to still image data on the storage medium; determination means for determining the magnitude relationship between the date data recorded on the storage medium; and date data obtained by the determination means. For large and small relationships
Order storage means for storing the same order, and the storage medium in the order stored in the order storage means.
An image data processing apparatus, comprising: reproducing means for reproducing recorded still image data.