KR100672487B1 - Method for managing memory in order to store pictures, and mobile communication terminal supporting the same - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for managing a video storage memory useful for storing an image input by photographing in a mobile communication terminal having a camera, and a mobile communication terminal supporting the same. The present invention relates to a method for actively and efficiently managing the memory in consideration of the capacity, and to a mobile communication terminal supporting the memory, and also to considering the remaining capacity of the image storage memory in order to support the active and efficient management of the image storage memory. An image storage memory management method for actively adjusting image data size according to photographing and compressing and storing image data at a compression ratio in consideration of the remaining capacity of the image storage memory, and a mobile communication terminal supporting the same to be.

Mobile terminal, camera phone, digital camera, memory for video recording

Description

Method for managing memory in order to store pictures, and mobile communication terminal supporting the same}

1 is a view for explaining the setting of the image size in the prior art and the imaging process accordingly.

Figure 2 is a block diagram showing a part of the configuration of the camera phone for the management of the image storage memory according to the present invention.

FIG. 3 is a diagram illustrating an image size setting for managing memory for image storage and an image capturing procedure according to the first embodiment of the present invention; FIG.

4 is a diagram illustrating an image size setting for managing image storage memory and an image capturing procedure according to a second embodiment of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to communication, and more particularly, to a method of managing an image storage memory useful for storing an image input by shooting in a mobile communication terminal having a camera, and a mobile communication terminal supporting the same.

Recently, mobile communication terminals equipped with digital cameras supporting hundreds of thousands and millions of pixels have been released.

Such a mobile communication terminal is generally referred to as a digital camera phone (hereinafter, referred to as a camera phone).

The prior art supports an image setting menu so that a user can set an image size (or image quality) in advance when taking a picture using a camera phone.

1 is a view for explaining the setting of the image size and the imaging procedure according to the prior art.

Referring to FIG. 1, the conventional image size setting and photo shooting basically use a corresponding application provided in the camera phone.

The application having an image size setting and a photographing function is executed according to a user's request (S1), and the user selects a desired task. The task is largely divided into a photographing task and an image size setting task.

If the user selects an image size setting task, the camera menu is displayed by the display means (generally using a liquid crystal display (LCD)) (S2).

When the user selects any one image size from the camera menu, the image size to be used for taking a picture is adjusted to the size selected by the user (S3 and S4).

Thereafter, the camera phone provides a photographing environment as the user selects a photographing task (S5), and when the user requests to save the photographed picture by pressing a key (S6, S7). As described above, once the resizing is completed, the user continues to take a picture with the image size selected once unless the user arbitrarily adjusts the image size next time.

On the other hand, the capacity confirmation procedure of the image storage memory in the prior art is as follows. In other words, the above-described application of the camera phone is executed according to the user's request, and the memory management task belonging to the application is further selected. Thus, when the user executes the memory management task, the prior art provides the user with only the information of the remaining capacity of the remaining memory and the currently occupied memory occupancy capacity.

Based on the above, the prior art does not support an active function of managing the capacity of the image storage memory. That is, it was impossible to adjust the image size of the photo data to be stored in consideration of the remaining capacity of the image storage memory, and only the photo data was stored at the image size adjusted by the user's request.

For example, if the user sets the largest resolution (or image data size), the conventional technology stores still picture data photographed at the set resolution regardless of the remaining capacity of the memory.

As a result, since there is no method for actively managing the capacity of the image storage memory in the prior art, there is no proper solution for managing the limited memory capacity.

 SUMMARY OF THE INVENTION An object of the present invention has been made in view of the above points, and provides an image storage memory management method for actively and efficiently managing the memory in consideration of the capacity of the image storage memory, and a mobile communication terminal supporting the same. It is.

It is another object of the present invention to provide a memory management method for image storage suitable for actively adjusting the size of image data according to photographing in consideration of the remaining capacity of the image storage memory, and a mobile communication terminal supporting the same.

Another object of the present invention is to provide a memory management method for image storage suitable for compressing and storing image data at a compression ratio in consideration of the remaining capacity of the image storage memory, and a mobile communication terminal supporting the same.

According to an aspect of the present invention, there is provided a memory management method for image storage according to the present invention. Compressing the data of the image photographed at a specific compression ratio and storing the data in the image storage memory, calculating the remaining capacity of the image storage memory in which the data is stored, and the calculated remaining capacity is preset. If less than the threshold, adjusting the specific compression ratio.

More preferably, as the storage of the data of the image taken by the digital camera is further requested, the method further includes compressing the data of the further requested image at the adjusted compression ratio and storing the stored data in the image storage memory. .

Also preferably, the compression ratio is adjusted so that data of an image to be stored in the image storage memory is compressed to a smaller size.

Another aspect of the image storage memory management method according to the present invention for achieving the above object is a method for managing the image storage memory of the mobile communication terminal having a digital camera and the image storage memory, Calculating the remaining capacity of the image storage memory as the storage of the data of the image taken by the digital camera to the image storage memory, and when the calculated remaining capacity is smaller than a preset threshold value Adjusting the previously applied compression ratio, compressing the data of the captured image at the adjusted compression ratio, and storing the compressed image data in the image storage memory. will be.

More preferably, the size of data of the photographed image is adjusted downward by compressing at the adjusted compression ratio.

Also preferably, when the calculated remaining capacity is smaller than a preset threshold, the previously applied compression ratio is adjusted so that the data of the photographed image is compressed to a smaller size.

A first feature of a mobile communication terminal according to the present invention for achieving the above object is a digital camera, an image storage memory for storing images taken by the digital camera, and the remaining capacity of the image storage memory. Automatically manage memory that applies different compression ratios as a reference, compresses the data of the captured image at the compression ratio applied according to the remaining capacity of the image storage memory, and stores the compressed data in the image storage memory. It is composed of blocks.

More preferably, the automatic memory management block sets a plurality of different thresholds for distinguishing the capacity of the image storage memory in order to apply different compression ratios according to the capacity of the image storage memory. Wherein the thresholds have a first threshold indicating more residual capacity and a second threshold indicating a smaller residual capacity relative to the first threshold. In particular, the memory automatic management block calculates a remaining capacity after storing the data of the photographed image in the image storage memory, and adjusts a compression ratio previously applied when the calculated value is smaller than the set threshold value. By using the adjusted compression ratio, the data of the captured image is compressed to a smaller size. Alternatively, the automatic memory management block stores the data of the photographed image in the image storing memory, and the image data to be stored thereafter when the remaining capacity of the image storing memory is smaller than the set threshold after the storing. Adjust the previously applied compression ratio so that is compressed to a smaller size. The memory automatic management block inquires of the user of the mobile communication terminal whether the compression ratio is adjusted before the adjustment of the compression ratio, and the user automatically responds to the inquiry of the adjustment. The management block adjusts the previously applied compression ratio.

A second feature of the mobile communication terminal according to the present invention for achieving the above object is to distinguish the capacity of the digital camera, the image storage memory for storing the image taken by the digital camera and the image storage memory; Set a plurality of different thresholds for the display, apply different compression ratios based on the remaining capacity of the image storage memory identified through comparison with the thresholds, and store the image at the applied compression ratio. And a memory automatic management block for compressing image data stored in a memory and storing the captured image data in the image storage memory.

A third feature of the mobile communication terminal according to the present invention for achieving the above object is to distinguish the capacity of the digital camera, the image storage memory for storing the image taken by the digital camera and the image storage memory; Set a plurality of different thresholds for the display, apply different compression ratios based on the remaining capacity of the image storage memory identified through comparison with the thresholds, and store the image at the applied compression ratio. And an automatic memory management block for compressing image data stored in a memory, compressing the image data of the photographed image at the applied compression ratio, and storing the image data in the image storage memory.

Other objects, features and advantages of the present invention will become apparent from the detailed description of the embodiments with reference to the accompanying drawings.

Hereinafter, with reference to the accompanying drawings illustrating the configuration and operation of the embodiment of the present invention, the configuration and operation of the present invention shown in the drawings and described by it will be described by at least one embodiment, By the technical spirit of the present invention described above and its core configuration and operation is not limited.

The present invention, when storing the image data of the picture taken by the camera phone in the image storage memory built in the camera phone, the size of the image data in consideration of the capacity (remaining capacity or occupied capacity) of the image storage memory Adjusting is key.

In particular, the present invention compresses the video data at a specific compression ratio in order to adjust the size of the video data.

In more detail, the present invention uses various threshold values corresponding to the degree of the remaining capacity of the image storage memory so that the image data is compressed and stored in different sizes according to the degree of the remaining capacity of the image storage memory.

As such, the use of the various thresholds in the present invention is for dividing the capacity of the image storage memory. Examples of setting such thresholds are illustrated in Tables 1-3.

The camera phone (mobile communication terminal) of FIG. 2 according to the present invention includes a digital camera 50. The camera phone includes an image storage memory 60 for storing an image (still image or a moving image) captured by the digital camera 50.

In particular, image data stored in the image storage memory 60 is compressed at a specific compression ratio by the memory automatic management block 40 described below before or after storage.

On the other hand, the camera phone is an application for performing a series of processes from the setting of the photographing condition using the digital camera 50 to storing the photographed picture as image data in the memory 60 for storing the picture as image data. It is provided.

The above application is a photographing task 10 involved in setting the photographing conditions and photographing of the digital camera 50, and an image sizing task 20 that allows a user to set the image data size (or compression ratio) of the photograph. And a memory management task 30 that allows a user to check the capacity of the image storing memory 60.

In particular, the above application performs data compression based on the remaining capacity of the memory 60 (based on the fullness of the memory) in the process of storing the image data according to the photographing in the image storage memory 60 and further compresses the data. It further comprises a memory automatic management block 40 for automatically adjusting the size of the image data by the.

Meanwhile, as another example, the automatic memory management block 40 compresses the already stored image data at a specific ratio according to the remaining capacity of the image storage memory 60 to automatically adjust the size of the stored image data. This is a method of securing the capacity by compressing the memory 60.

However, hereinafter, only the case of down-sampling the image data by compressing the image data to be stored, and from such an example, the implementation of compressing the previously stored image data as described above is sufficiently possible. Detailed description will be omitted. That is, a detailed description of an example of compressing previously stored image data according to the remaining capacity of the image storing memory 60 will be omitted below.

In particular, the memory automatic management block 40 supports a user environment for setting a plurality of threshold values for determining whether to compress data according to the remaining capacity of the memory 60 and for setting a compression ratio of image data according to each set threshold value. To provide. That is, the user presets threshold values according to the threshold setting function supported by the memory automatic management block 40 and also sets a compression ratio for each of the set threshold values.

Thereafter, the automatic memory management block 40 compares the image data according to the photographing to the preset threshold values whenever the image data is stored in the memory 60 or after storing the image data according to the photographing. The current remaining capacity is compared with preset threshold values.

When the comparison result is that the current remaining capacity is larger than a specific threshold value (that is, when the remaining capacity of the current memory is larger than the set threshold capacity), the image data is compressed and stored in the memory 60 at the current compression ratio ( Or store the image data in memory without compression). Alternatively, the current compression ratio is maintained to apply the same compression ratio even when storing the next image data.

On the other hand, if the comparison shows that the current remaining capacity is below a certain threshold (that is, when the remaining capacity of the current memory is less than or equal to the set threshold capacity), the current compression ratio for the image data to be stored is further adjusted (the image to be compressed). After downsampling the data size, the image data is compressed and stored in the memory 60 to achieve the adjusted compression ratio. On the other hand, in the case of adjusting the size of the image data after storing the image data once, adjust the current compression ratio to a lower compression ratio after storing the image data in the memory, and then adjusting the next time storing the image data. Image data is compressed to have a compressed ratio. Here, the downward adjustment of the compression ratio is equivalent to down sampling the size of the image data to be compressed.

Examples of compression ratios based on multiple threshold values in the present invention are shown in Table 1 below. The values in Table 1 below are adjusted as desired by the user. Adjusting the compression ratio in Table 1 is the same as adjusting the size of the image data to be stored as described above. The compression ratio described above or below is the ratio of the size of the image data after compression to the size of the image data before compression. That is, "compression ratio = [size of image data after compression / size of image data before compression]"

Threshold (T _K ) Memory Remaining Capacity (%) Compression Ratio (%) First critical residual capacity T ₁ 50 90 Second critical residual capacity (T ₂ ) 40 80 Third critical residual capacity T ₃ 30 70 Fourth critical residual capacity (T ₄ ) 20 60

Unlike Table 1, an example of directly using image data size (or resolution) instead of using a compression ratio is shown in Table 2 below.

Threshold (T _K ) Memory Remaining Capacity (%) Image data size (resolution) First critical residual capacity T ₁ 50 1280 × 840 Second critical residual capacity (T ₂ ) 40 840 × 420 Third critical residual capacity T ₃ 30 320 × 240 Fourth critical residual capacity (T ₄ ) 20 160 × 120

Table 3 below shows an example of using a compression ratio corresponding to the image data size of Table 2.

Threshold (T _K ) Memory Remaining Capacity (%) Image data size Compression Ratio (%) 50 or more 1600 × 1200 0 First critical residual capacity T ₁ 50 1280 × 840 56 Second critical residual capacity (T ₂ ) 40 840 × 420 18.4 Third critical residual capacity T ₃ 30 320 × 240 4 Fourth critical residual capacity (T ₄ ) 20 160 × 120 One

As a result, the memory automatic management block 40 checks the remaining capacity of the memory 60 in association with the memory management task 30 when storing the image data according to the photographing in the memory 60. The compression ratio is lowered by one or more steps whenever the identified remaining capacity becomes smaller than each critical residual capacity. In other words, the size of the image data to be stored is reduced to a size smaller by one or more steps.

For example, assume that the remaining capacity of the current memory is 52%. And it is assumed that the size of the image data to be stored by the current picture taking occupies 3% of the memory capacity.

The memory automatic management block 40 calculates the remaining capacity of the memory that is expected when the image data obtained by the current photograph is stored. The calculated value is then "52-3 = 49 [%]".

The memory auto management block 40 then compares the calculated value with predefined threshold residual capacities. In the case of applying Table 3, since the calculated value is smaller than the first critical residual capacity (50%), the memory automatic management block 40 adjusts the compression ratio of the image data from 0% to 56%.

On the other hand, the image data obtained by photographing later is compressed at a rate of 56% (after being reduced in size by 44%) and stored in the image storage memory. Using Table 2 above, when the calculated value is smaller than the first critical residual capacity (50%), the memory automatic management block 40 changes the size of the image data from "1600 x 1200" to "1280 x 840". The image data is compressed to a size of "1280 x 840" and then stored in the memory. Here, the compression ratio adjusted from "1600 x 1200" to "1280 x 840" is 56% in Table 3.

Then, if the remaining capacity of the image storage memory becomes 42%, and the size of the image data to be stored by the current picture taking occupies 3% of the memory capacity, the memory automatic management block 40 determines that the image data by this picture shooting is made. Recalculate the remaining capacity of the expected memory when is stored. The calculated value is then "42-3 = 39 [%]".

The memory automatic management block 40 then compares the calculated value (39%) with predefined threshold residual capacities. In the case of applying Table 3, since the calculated value (39%) is smaller than the second critical residual capacity (40%), the memory automatic management block 40 reduces the compression ratio of the image data from 56% to 18.4%. Down to readjust. Using Table 2 above, when the calculated value is less than the second threshold residual capacity (40%), the memory automatic management block 40 changes the size of the image data from "1280 x 840" to "840 x 420". The image data is compressed into the "840 x 420" size and then stored in the memory. Here, the compression ratio adjusted from "1280 x 840" to "840 x 420" is 18.4% in Table 3, and "840 x 420" corresponds to 18.4% for "1600 x 1200".

Determination of image data compression and compression ratio (storage size of image data) by the memory automatic management block 40 will be described in more detail with reference to FIGS. 3 and 4 below.

FIG. 3 is a diagram illustrating an image size setting and an image capturing procedure for managing memory for image storage according to a first embodiment of the present invention. FIG. 3 is a procedure of adjusting and storing an image size by compression at the time of storing image data. It is shown.

Referring to FIG. 3, the above-described application is executed according to a user's request, and the display unit displays an image captured by the digital camera as the user selects a photo-taking task.

If the user requests later, take a picture (S10). The video is temporarily stored.

In addition, the camera phone inquires of the user through the display means whether to store the data of the temporarily stored image according to the photographing. In operation S11, it is determined whether to store the image data according to the user's response.

If the user requests the storage of the corresponding image data, the camera phone calculates the remaining capacity value R of the image storing memory after storing the image data according to the photographing (S12). In other words, the automatic memory management block of the camera phone calculates a value obtained by subtracting the size of the image data that is waiting for storage (temporary storage) by the current picture taking from the remaining capacity of the current image storage memory. In other words, if the remaining capacity of the current image storage memory is R1 (the remaining capacity before storing image data) and the size of the image data stored at this time is r1, the remaining capacity after the storage of the image storage memory is "R = R1-r1. "to be.

Thereafter, the automatic memory management block checks whether the calculated remaining capacity value R exceeded the calculated residual capacity value R with respect to a preset threshold residual capacity value, and the threshold residual capacity value R and the threshold residual capacity. The values T _K are compared (S13). More preferably, the calculated residual dose value R in the present invention is compared with the threshold residual dose values T _{K which} are larger than the residual dose R1 before storage.

In the comparison result, when it is determined that the calculated residual capacity value R is smaller than the critical residual capacity T _K , K = 1, 2, 3, 4, ... (S14), the memory automatic management block is determined. The current compression ratio is adjusted downward (S15). Meanwhile, before the current compression ratio is adjusted down, the automatic memory management block displays a pop-up notification message on the display unit to inform the user of the adjustment of the compression ratio. In this way, it is most preferable to substantially adjust the compression ratio according to the user's decision by asking the user whether to adjust the compression ratio through the pop-up notification message. As another example, the automatic memory management block informs the user of the available remaining capacity of the image storage memory as a percentage of the total memory capacity through a pop-up notification message.

Here, the notification method of adjusting the compression ratio is notified in text format as in the pop-up notification message format.

And when the user responds positively to the query for adjusting the compression ratio of the image data, that is, when the user selects to lower the compression ratio, the memory automatic management block compresses the temporarily stored image data with the downward adjusted compression ratio ( S16). The compressed image data is stored in the image storage memory (S19). The automatic memory management block adjusts the compression ratio after adjusting the compression ratio down, the compression fact of the image data after the compression of the image data, the compressed size of the image data, and the storage facts of the image data after the storage of the image data. At that time, the user is informed via a pop-up notification message.

Meanwhile, in the comparison result, when the calculated residual capacity value R is not smaller than the threshold residual capacity T _K (S14), the memory automatic management block maintains the current compression ratio (S17). Thus, the memory automatic management block compresses the temporarily stored image data at the current compression ratio maintained (S18). The compressed image data is stored in the image storage memory (S19). The automatic memory management block then maintains the compression ratio, the compression fact of the image data after the image data compression, the compressed size of the image data, and the fact of storing the image data after the storage of the image data. Inform the user.

FIG. 4 is a diagram illustrating an image size setting and an image capturing procedure for managing memory for image storage according to a second embodiment of the present invention. After storing image data, FIG. The procedure to be applied when storing the image data is shown.

Referring to FIG. 4, the above-described application is executed according to a user's request, and the display unit displays an image captured by the digital camera as the user selects a photographing task.

If the user requests later, take a picture (S20). After temporarily storing the image, the user is inquired through the display means to store the image data according to the photographing. In operation S21, it is determined whether to store the image data according to the user's response.

If the user requests the storage of the image data, the camera phone compresses the image data according to the photographing at the currently set compression ratio and stores the image data of the compressed size in the image storage memory (S22 and S23). . In other words, the automatic memory management block of the camera phone compresses the image data that is currently waiting for storage (temporary storage) by the current photographing at the current compression ratio (S22). Then, the compressed image data is stored in the image storage memory (S23).

Meanwhile, the memory automatic management block checks the remaining capacity R of the image storage memory after storing the image data this time (S24).

The memory automatic management block may further check the identified memory remaining capacity value R and the threshold remaining capacity values (R) in order to check whether the identified memory remaining capacity value R is exceeded with respect to a preset threshold residual capacity value. T _K ) is compared (S25).

In the comparison result, when it is determined that the memory residual capacity value R is smaller than the threshold residual capacity T _K , K = 1, 2, 3, 4, ... (S26), the memory automatic management block is displayed. A pop-up notification message is displayed on the means, and the user is asked whether the compression ratio is adjusted down (S27). In this way, after inquiring the user of whether to adjust or not adjust the compression ratio through the pop-up notification message, if the user responds positively to the inquiry about adjusting the compression ratio of the image data (S28), the memory automatic management block Adjusts the current compression ratio downward (S29).

Afterwards, the automatic memory management block further notifies the user through a pop-up notification message about the fact that the compression ratio is lowered, the adjusted compression ratio, and the size of the image data according to the lowered compression ratio.

Then, when storage of image data according to photographing is required, the memory automatic management block compresses the image data at the downwardly adjusted compression ratio and stores the image data in the image storage memory.

Meanwhile, in the comparison result, if the checked residual capacity value R is not smaller than the threshold residual capacity T _K (S14), the memory automatic management block is maintained without re-adjustment of the current compression ratio.

As a further example, the present invention provides the user with the fact that the calculated residual capacity value R is not less than the critical residual capacity T _K even though the calculated residual capacity value R is not less than the critical residual capacity T _K. When notifying the user, if the user is requested to readjust the current compression ratio, the current compression ratio is adjusted up or down according to the user's request. The video data being temporarily stored at the compression ratio adjusted by the user's request is compressed and stored in the memory.

The notification method to the user described above also applies to a text format such as a pop-up notification message format as well as a voice notification format.

Meanwhile, as another example, in the present invention, if the compression ratio is readjusted, and the calculated residual capacity value R does not reach the minimum threshold residual capacity, the calculated residual capacity value R of Table 2, for example, is calculated. ) Is less than the fourth threshold residual capacity T ₄ , the memory auto management block forces a downward readjustment on the compression ratio and notifies the user of the rebalancing fact and the reason for the forced reconditioning.

On the other hand, as another example of the present invention, the automatic memory management block is a pop-up notification message when the user adjusts the current compression ratio, and informs the user that the down-regulation of the compression ratio, and the image size setting task and Provides an image size setting environment for the user to select one of image sizes such as "1280 x 840", "840 x 420", "320 x 240", and "160 x 120" or select a specific compression ratio. . Accordingly, when the user selects one image size (or compression ratio), the image size (or compression ratio) is substantially adjusted according to the user's selection.

The above description is given by taking an example.

Assume that the total memory capacity of the camera phone's image storage memory is 64MB. As described above, the thresholds set for dividing and dividing the capacity of the memory are 32 MB (first critical remaining capacity), 16 MB (second critical remaining capacity), 8 MB (third critical remaining capacity), and 4 MB (fourth critical remaining). Capacity).

At this time, it is assumed that the remaining capacity of the image storage memory is 34MB, and the size of the image data stored by the current picture taking is 3MB.

As a result, the remaining capacity of the memory becomes 31MB after the current video data is stored. Therefore, the automatic memory management block asks the user to lower the current compression ratio applied to compress the video data that is currently waiting to be stored as well as the video data to be stored later. Ask for adjustment.

 At this time, if the user responds positively, the memory automatic management block further adjusts the current compression ratio. As a result of the downward adjustment of the compression ratio, the size of the image data becomes smaller than before.

As described above, the present invention has the following effects.

First, since image data is compressed and stored while adjusting a compression ratio (or image data size) in consideration of the remaining capacity of the image storage memory, it is possible to actively manage a limited capacity of the image storage memory.

Second, since information related to the adjustment of the compression ratio is inquired and notified to the user through a pop-up notification message, the user can actively check the total memory, the remaining capacity or the occupied capacity. And, accordingly, it supports active management of user's limited memory capacity.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (15)

A digital camera; An image storage memory for storing an image photographed by the digital camera; Apply different compression ratios based on the remaining capacity of the image storage memory, compress the data of the photographed image at the compression ratio applied according to the remaining capacity of the image storage memory, and convert the compressed data into the image. And an automatic memory management block for storing in the storage memory. The memory management block of claim 1, wherein the automatic memory management block sets a plurality of different threshold values for distinguishing the capacities of the image storage memory to apply different compression ratios according to the capacities of the image storage memory. Mobile communication terminal, characterized in that. The mobile terminal of claim 2, wherein the threshold values have a first threshold value indicating a higher residual capacity and a second threshold value indicating a smaller residual capacity compared to the first threshold value. The memory management block of claim 2, wherein the automatic memory management block calculates a remaining capacity after storing the data of the photographed image in the image storing memory, and is applied previously when the calculated value is smaller than the set threshold value. And adjusting the compression ratio to compress the data of the captured image into a smaller size. The method of claim 2, wherein the memory automatic management block stores data of the captured image in the image storage memory, and after the storage, the remaining capacity of the image storage memory is smaller than the set threshold value. And a previously applied compression ratio so that the image data to be stored thereafter is compressed to a smaller size. The mobile communication terminal according to any one of claims 4 to 5, wherein the memory automatic management block inquires of a user of the mobile communication terminal whether the compression ratio is adjusted before adjusting the compression ratio. . 7. The mobile communication terminal of claim 6, wherein the memory automatic management block adjusts the previously applied compression ratio as the user responds positively to the query for adjustment. A digital camera; An image storage memory for storing an image photographed by the digital camera; Setting a plurality of different thresholds for distinguishing the capacity of the image storage memory, applying different compression ratios based on the remaining capacity of the image storage memory identified through comparison with the threshold values, And an automatic memory management block for compressing image data stored in the image storage memory at the applied compression ratio, and storing the captured image data in the image storage memory. A digital camera; An image storage memory for storing an image photographed by the digital camera; Setting a plurality of different threshold values for distinguishing the capacity of the image storage memory, applying different compression ratios based on the remaining capacity of the image storage memory identified through comparison with the threshold values, And a memory automatic management block for compressing the image data stored in the image storage memory at the applied compression ratio, and compressing the data of the photographed image at the applied compression ratio and storing the image data in the image storage memory. Characterized in a mobile communication terminal. A method of managing the image storage memory of a mobile communication terminal having a digital camera and an image storage memory, the method comprising: Compressing data of the image photographed by the digital camera at a specific compression ratio and storing the data in the image storage memory; Calculating a remaining capacity of the image storage memory in which the data is stored; And adjusting the compression ratio when the calculated remaining capacity is smaller than a predetermined threshold value. 11. The method of claim 10, further comprising: storing the data of the image requested by the digital camera in the memory for storing the image by compressing the data of the further requested image at the adjusted compression ratio. Memory management method for image storage of a mobile communication terminal comprising a. The method of claim 10, wherein the compression ratio is adjusted so that data of an image to be stored in the image storage memory is compressed to a smaller size. A method of managing the image storage memory of a mobile communication terminal having a digital camera and an image storage memory, the method comprising: Calculating a remaining capacity of the image storage memory when the data of the image photographed by the digital camera is requested to be stored in the image storage memory; Adjusting the previously applied compression ratio if the calculated remaining capacity is less than a preset threshold; Compressing data of the requested image at the adjusted compression ratio; And storing the data of the compressed image in the image storage memory. 15. The method of claim 13, wherein the size of data of the captured image is adjusted downward by compressing at the adjusted compression ratio. The mobile communication terminal of claim 13, wherein when the calculated remaining capacity is smaller than a preset threshold value, the previously applied compression ratio is adjusted so that the data of the stored requested image is compressed to a smaller size. Memory management for video recording.

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