JPH05197844A - Data processor - Google Patents

Abstract

PURPOSE:To prevent the reproducing order of the image data set in a reproduction state from being affected by the recording order of the data. CONSTITUTION:A system controller 19 reads the information on the recording time of the image data out of an IC memory card 11 and then controls a system to reproduce the image information out of the card 11 at least in the order of recording time sections, i.e., the order of dates. Furthermore, the controller 19 also performs the control. to rearrange the image information recorded on the card 11 in the order of recording time sections with use of an auxiliary memory 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data processing device, and more particularly to a data processing device for recording and reproducing image information (including audio information) on an information recording medium.

[0002]

2. Description of the Related Art A data processing apparatus for recording / reproducing image information on / from an information recording medium is widely used in various fields. In the field of cameras, for example, image information captured by an electronic still camera is recorded on the recording medium. It is widely practiced to reproduce this, edit it into a format such as an electronic album, and process it.

Now, assuming that an IC memory card is used as the recording medium of the electronic still camera, the recording format of this IC memory card will first be described with reference to Table 1 below.

[0004]

[Table 1] Table 1 above shows JEIDA “IC memory card guideline Ver4.1” and “DOS interface
Each of them is created in conformity with the “Guideline Ver1.1” and is composed of an attribute memory 24 and a common memory 25. The image of the memory arrangement of the common memory 25 is divided into an attribute information area and a data area. The attribute information area contains a data start address, block length, initialization date and time, and the data area contains various data. Written. The data area includes a memory management area and an image data file area.

When an object is sequentially photographed by an electronic still camera having an IC memory card of the recording format shown in Table 1 above, the file name 26 on the root directory in the memory management area is named in the order of photographing, but the actual image information is A free area in the data file area divided into a plurality of clusters is searched by a system controller described later and randomly stored in the free area, and the starting cluster is recorded in the root directory. That is, the directory entries such as the file name 26 and the start cluster 27 are recorded according to the shooting order, but the actual storage location of the image data for each shooting frame is random. Further, in a card in which the shooting order and the recording order are different due to copying or the like, the playback order at the time of playback is determined by the order of directory entries on the root directory (see FIG. 6).

By the way, there is a program reproducing apparatus capable of controlling a program when reproducing an image recorded on an image recording medium such as a video tape and holding the control content in a form that a user can easily confirm. -313338
No. Furthermore, an on-screen display device, in which date data is added to each photographed frame and the date data is retrieved by on-screen display, is actually available.
No. 3-564. Further, Japanese Patent Application Laid-Open No. 64-62983 discloses an electronic still camera in which a date is recorded together with a video signal, and a reproducing date can be viewed together with a video image reproduced by a monitor or the like during reproduction.

[0007]

However, when the stored information is reproduced by the conventional electronic still camera described above, in the case of a card in which photographed data is recorded separately regardless of the photographing order, the recorded information is reproduced according to this recording order. That is, since the shooting order and the recording order of the data are different, the playback screen is also different. Therefore, when trying to edit an electronic album or the like, it is impossible to edit the date order and the shooting order as they are.

This is also the case with recorded data obtained by continuous shooting or interval shooting at fixed time intervals, and a series of continuous shooting is performed for a card in which the order of continuous shooting by copying or the like is different from the order of recording. The video is fragmented and played back. Further, in Japanese Patent Laid-Open No. 63-313382 for performing program reproduction, reproduction management information is separately required, and reproduction is not performed based on the recorded header information, but the reproduction order is merely specified manually. .. Furthermore, Japanese Utility Model Laid-Open No. 63-564, which has a search function based on date data, merely gives specific date data and searches for the corresponding data, and does not rearrange and reproduce at the time of reproduction. Furthermore, in Japanese Patent Laid-Open No. 64-62983, in which the date is recorded together with the video signal and the date is superimposed at the time of reproduction, the recorded data is merely displayed on the screen and the recorded data changes. Data is not displayed only when

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problems and to provide a data processing apparatus in which the reproduction order at the time of reproduction is not influenced by the recording order of image data.

[0010]

A data processing apparatus according to the present invention comprises a recording medium in which predetermined data and information regarding a recording time of the data are recorded, and the predetermined data is recorded in at least recording time division order based on the time information. The recording medium further comprises a data reproducing means for reproducing, and a means for rearranging the data recorded in advance on the recording medium on the recording medium in at least the recording time division order.

[0011]

When reproducing the predetermined data with this data processing device, it is reproduced at least in the recording time division order based on the information regarding the recording time. Further, the predetermined data is rearranged on the recording medium at least in the order of the recording time and then reproduced.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to an electronic still camera will be described below. FIG. 1 is a block configuration diagram of an electronic still camera. The configuration of the hardware side of the first embodiment of the present invention will be described with reference to FIG.

When the camera is set to the recording mode, the subject image transmitted through the optical system 1 is photoelectrically converted into an electric signal in the image pickup system 2 including a CCD or the like. This electric signal is converted into a digital signal by the A / D (analog / digital) conversion circuit 4 after the DC level is kept constant by the clamp circuit 3. This digital signal is once written to the frame memory 6 via the memory control circuit 5.

When all the image data converted into digital signals have been written in the frame memory 6, this time the memory control circuit 5 reads the data from the frame memory 6 and performs DCT (discrete cosine transform) / IDC.
In the T circuit 7, data necessary for data compression is converted and sent to the coder / decoder 8. Coder / Decoder 8
Then, this data is compressed through the card I / F circuit 9 while using the auxiliary memory 10, and the IC memory card 1
Write to 1.

On the other hand, when this camera is set to the reproduction mode, the data read from the IC memory card 11 is
Decompression processing is performed in the coder / decoder 8 via the card I / F circuit 9. The data decompressed by the coder / decoder 8 is subjected to inverse DCT processing in the DCT / IDCT circuit 7 and written in the frame memory 6 through the memory control circuit 5.

When the expansion processing of all data is completed, this time the data is read from the frame memory 6 by the memory control circuit 5 and converted into an analog signal by the D / A (digital / analog) conversion circuit 12,
An image is reproduced by an EVF (electronic viewfinder) 14 after passing through the 75Ω driver 13. The output of the driver 13 is also supplied to the external output terminal 15.

In addition to this, the character generator 16
The on-screen display such as date and time is displayed on the screen. In addition, a display unit 17 that displays various operation modes and the like, an operation unit 18 that performs various operations, and a system controller 19 that controls the operation sequence of each of these components.
Etc. are provided. This system controller 19
Has therein a data reproducing means, a displaying means for displaying the changed date, and a means for rearranging in order of recording time division.

The operation of the first embodiment thus constructed will be described with reference to the flow chart of FIG. In the first embodiment, when reproducing predetermined data randomly recorded in the data file area of the recording medium regardless of the shooting order,
The data is reproduced at least in the order of the recording time section, and here the recording date 28 (see Table 1) is used as the recording time section. Therefore, the reproduction order of the data captured and recorded on the same day does not have to be the recording time order.

Now, the system controller 19 (see FIG. 1) judges whether it is the date order reproduction mode or the normal reproduction mode (step S1), and if it is the date order reproduction mode, the system controller 19 uses, for example, an IC memory card or the like. The header information indicating the date (recording date 28 shown in Table 1) is read from the recording medium (step S2), and the reproduction order is controlled based on the header information to reproduce the recording in the date order (step S3). On the other hand, if it is determined in step S1 that the normal reproduction mode is set, normal reproduction is performed in the recording order on the recording medium as in the conventional case (step S4).

The movement of predetermined data randomly recorded in the data file area on the recording medium in the date order reproduction mode will be described with reference to FIG. When the recording order on the recording medium is random regardless of the shooting order as shown in FIG. 3 (A), the system controller 19 reads the date information and the reproduction order at the time of reproduction is as shown in FIG. 3 (B). Sort by date.

According to the first embodiment, a plurality of predetermined data randomly recorded in the data file area of the recording medium irrespective of the photographing order can be reproduced in the recording time division order, that is, the date order. This means that when editing a huge amount of data due to the increase in capacity of a recording medium, even if the recording order is different, it is not necessary to be aware of the recording order at the time of reproduction. Therefore, it is convenient for an electronic album.

In the first embodiment described above, it is possible to automatically rearrange and reproduce a plurality of predetermined data whose recording order is random on the recording medium in the order of date. However, the recording date of each reproduced image is recognized. You cannot do it. Therefore, a means for displaying this on the reproduction screen when the shooting date of the reproduced image sequence changes will be described below with reference to FIGS. 4 and 5 as a modified example of the first embodiment. The configuration of the hardware surface of this modified example is the same as that of FIG. 1 in the first embodiment, so the description thereof is omitted.

FIG. 4 is a flow chart for explaining the operation of this modification, which is a system controller 19 (see FIG. 1).
Reads the header information indicating the shooting date on the recording medium (step S11) and determines whether the date has changed (step S12). When the date changes, the character generator 16 (see FIG. 1) displays the changed date on-screen on the reproduction screen (step S13). If the date does not change, no processing is performed. This flow ends.

According to the above modification, when the date changes in the date-order reproduction mode, as shown in FIG. 5, the reproduction frames 31 and 34 of the changed date have shooting dates 31a and 34a.
a can be automatically displayed on-screen. Since the date display is not displayed on the playback frames 32, 33, and 35 where the date does not change, the state change becomes clearer than when the date is continuously displayed on all the playback screens. Differentiated playback data is possible. Therefore,
The transition of the date in the date order reproduction mode in the case of an electronic album becomes clearer.

The recording format of the IC memory card in the above-mentioned conventional example has been described with reference to Table 1, but the actual image data in the data file area can also be obtained by changing the order of the directory entries of the root directory in this table. The playback order can be rearranged without moving, and this will be described here as another modification of the first embodiment.

That is, the root directory in the memory management area and this entry format are shown in FIG.
In each of the cases shown in (B), the playback order is managed in the root directory, and when the recorded data in the data file area is stored in the order shown in FIG. In order to reproduce in the order of C → A → D → E → B, the file names on the root directory may be rearranged as shown in FIG. 7 (A).

In the first embodiment and its modified example, a plurality of randomly recorded predetermined data are reproduced in the order of date at the time of reproduction, but a plurality of predetermined data once recorded on the recording medium at random. The data may be rearranged so that the recording order matches the shooting order on the recording medium and then reproduced, which will be described below as a second embodiment of the present invention. Since the hardware configuration of the second embodiment is the same as that shown in FIG. 1, the description thereof is omitted, and only the data rearrangement procedure and its operation will be described with reference to FIGS.

In FIG. 8, a plurality of predetermined data 41 to 45 already recorded in the data file area of the IC memory card 11 (see FIG. 1) as a recording medium are stored in the auxiliary memory 1
0 (see FIG. 1) is a diagram for explaining the procedure for physically rearranging in this order. As shown in FIG. 8 (A), predetermined data 43, 45,
It is assumed that 41, 42 and 44 have already been recorded.

[First Step] First, the IC memory card 1
Predetermined data 43 stored in the memory area 11a on 1 is temporarily shifted to the auxiliary memory 10 via the card IF circuit 9 (see FIG. 1) (arrow A1), and then stored in the area 11c. The predetermined data 41 present is shifted (arrow A2). Then, by shifting the predetermined data 43 temporarily stored in the auxiliary memory 10 to the area 11c (arrow A3), a data array in the IC memory card 11 as shown in FIG. 8B can be obtained.

[Second Step] The predetermined data 45 and 42 stored in the memory areas 11b and 11d on the IC memory card 11, respectively, are indicated by arrows B1 and B in FIG. 8B.
By performing the same replacement operation as shown in 2 and B3 respectively, the in-card data array as shown in FIG. 8C can be obtained.

[Third Step] Finally, the memory area 11
Predetermined data 45 and 4 stored in d and 11e, respectively
The rearrangement of data is completed by operating the arrows C1, C2 and C3 of FIG.

The operation of the second embodiment thus constructed will be described with reference to the flow chart of FIG. When this flow starts, it is checked whether or not it is a mode in which the recording order on the recording medium is rearranged so as to match the shooting order before the reproducing operation (step S21). In this mode, the header information indicating the date is checked. Is read (step S22), and the data array on the memory is rearranged in the date order based on the header information (step S23). On the other hand, if the rearrangement mode is not such a mode in step S21, the flow ends without performing any processing.

The second embodiment is the same as the first embodiment in that the reproduction screens can be displayed according to the shooting order in the reproduction mode, but the recorded data is rearranged on the recording medium. Even if it is played back on the playback device, it can be played back in the order of shooting.

In each of the above embodiments and modifications, the present invention is applied to an electronic still camera. However, the present invention is not limited to this, and can be widely applied to data processing apparatuses in general.

According to each of the above-described embodiments and modifications, the reproduction order can be controlled based on the header information such as the information regarding the recording time of the data recorded together with each predetermined data on the recording medium. It is expected that operability during playback and search efficiency will be improved.

[0036]

As described above, according to the present invention, at the time of reproducing a plurality of predetermined data randomly stored in the data file area of the recording medium irrespective of the recording order, at least the recording time division order is read. Alternatively, since the data is read out after being sorted in the recording time division order, the remarkable effect that the reproduction order at the time of reproduction is not influenced by the recording order of the image data is exhibited.

[Brief description of drawings]

FIG. 1 is a block configuration diagram of a first embodiment in which the present invention is applied to an electronic still camera.

FIG. 2 is a flowchart of a reproducing operation in the first embodiment.

FIG. 3A is a diagram showing a recording order on the recording medium in the first embodiment, and FIG. 3B is a diagram showing a reproduction order during reproduction.

FIG. 4 is a flowchart of a date display operation in the modification of the first embodiment.

FIG. 5 is a diagram showing a display screen sequence of a series of playback frames in the above modification.

FIG. 6A is a diagram for explaining a root directory in a memory management area of an IC memory card, and FIG. 6B is a diagram for explaining this entry format.

FIG. 7A illustrates a root directory in a memory management area of an IC memory card, and FIG. 7B illustrates a data file area.

FIG. 8 is a diagram illustrating a procedure of physically rearranging recorded data of an IC memory card using an auxiliary memory according to the second embodiment of the present invention, in which (A) shows the first step and (B).
Shows the second step, and (C) shows the third step.

FIG. 9 is a flowchart of a rearrangement operation in the second embodiment.

[Explanation of symbols]

11 ... Auxiliary memory (means for sorting in order of recording time) 19 ... System controller (data reproducing means, display means for displaying changed date, means for sorting in recording time section)

Claims (3)

[Claims] 1. A data reproducing means for reproducing the predetermined data from a recording medium in which predetermined data and information regarding a recording time of the data are recorded, at least in a recording time division order based on the time information. Data processing device. 2. The data processing apparatus according to claim 1, further comprising display means for displaying the changed date when the date is changed during reproduction. 3. A data processing apparatus comprising a means for rearranging data recorded on a recording medium in advance in at least a recording time division order on the recording medium.