JPH11331651A - Digital camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the digital camera that magnifies an optional part of a display image. SOLUTION: Image data reproduced from a memory card 36 are once written in a video memory area 34a of a DRAM 34 and then read. As a result, a reproduced image is displayed on a monitor 32. When the operator operates a zoom button 70, a CPU 38 gives frame data to a memory control circuit 28 and gives zoom data to a zoom circuit 22. Thus, the memory control circuit 28 reads partial image data resident in a half the video memory area 34a from the midposition of the area. And the zoom circuit 22 applies double magnification zoom processing to the partial image data. As a result, a magnified image whose middle part is magnified twice is displayed on the monitor 32. When the operator operates cursor keys 66a-66d, the CPU 38 updates the frame data. Thus, the displayed image on the monitor 32 is scrolled.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital camera, and more particularly, to a digital camera that enlarges and displays a part of a reproduced image reproduced from a recording medium on a monitor.

[0002]

2. Description of the Related Art In a conventional digital camera of this type, a 1/9 portion of an original reproduced image is magnified and displayed in response to a magnifying zoom instruction, and another 1/9 is displayed in response to an operation of a cursor key. Some switches to nine images. That is, the reproduced image is divided into nine parts in advance, and the image that can be enlarged and displayed is limited to any one of the nine partial images.

[0003]

However, in such a conventional technique, an arbitrary portion of a display image cannot be enlarged, which is inconvenient. Therefore, a main object of the present invention is to provide a digital camera capable of enlarging an arbitrary portion of a display image.

[0004]

According to the present invention, there is provided a digital camera for outputting image data read from a memory from a monitor, comprising: input means for inputting an operator's instruction; Output means for outputting position data for defining a typical readout position and zoom data for defining an enlarged zoom magnification, readout means for reading out partial image data from the position indicated by the position data in the memory, and enlargement zooming to the partial image data according to the zoom data The digital camera includes a magnifying zoom unit that performs processing, and the output unit includes a first updating unit that updates position data in response to a scroll instruction from an operator.

[0005]

The image data reproduced from the recording medium is a DRA
The data is temporarily written to the M video memory area and then read. As a result, the reproduced image is displayed on the monitor.
When the operator operates the zoom button, the CPU supplies the frame data to the memory control circuit and the zoom data to the zoom circuit. Therefore, the memory control circuit reads out half of the partial image data from the center of the video memory area, and the zoom circuit subjects the partial image data to double magnification zoom processing. As a result, an enlarged image whose center is enlarged twice is displayed on the monitor. Here, when the operator operates the cursor keys,
The CPU updates the frame data. Thereby, the display image on the monitor is scrolled.

[0006]

According to the present invention, since the position data is updated in response to the operator's scroll instruction, an arbitrary portion of the display image can be enlarged. The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

[0007]

Referring to FIG. 1, a digital camera 10 of this embodiment includes a lens 12. FIG. The incident light image of the subject is applied to the CCD imager 14 through the lens 12. The CCD imager 14 has 640 pixels and 480 lines of pixels in the horizontal and vertical directions.

When the mode setting switch 68 is set to the camera side, the system controller 65
The camera mode is set in the CPU 38 through 8b. At this time, the CPU 38 instructs the timing generator 16 to read a pixel signal (camera signal), and the timing generator 16 reads a camera signal from the CCD imager 14 by a raster scan method. The read camera signal is converted into a digital signal (camera data) by the A / D converter 18, and the converted camera data is input to the signal processing circuit 20. A complementary color filter (not shown) is mounted on the front surface of the CCD imager 14, and each pixel of the input camera data is
It has only one complementary color component of e, Cy, Mg and G. For this reason, the signal processing circuit 20 performs color separation on the input camera data, and outputs the R obtained by the color separation.
YUV conversion is performed on the GB data.

The thus obtained YUV data, that is, image data, is input to the DRAM 34 via the bus 24, and is written to the video memory area 34a by a raster scan method. The video memory area 34a is the monitor 32
Has a capacity equivalent to a frame (monitor frame)
The image data output from the zoom circuit 22 is DMA
(Direct memory access) is written to the video memory area 34a. Specifically, the CPU 3
8 gives frame data to the memory control circuit 28 together with the write request, that is, data of the X coordinate and Y coordinate at the upper left corner of the frame and the horizontal size (X size) and vertical size (Y size) of the frame. According to the frame data, the image data is written to a predetermined position in the video memory area 34a. In the camera mode, the frame data of the monitor frame is input to the memory control circuit 28. Since the upper left coordinates of the monitor frame are (0, 0) and the horizontal size and the vertical size are 640 pixels and 480 lines, respectively, the image data is written to the full video memory area 34a.

After the writing of the image data in the video memory area 34a is completed, the image data is read out by the memory control circuit 28 in a raster scan manner and supplied to the video encoder 30 via the bus 24. The video encoder 30 encodes the input image data, and outputs a composite video signal obtained by the encoding to a monitor 32 also serving as a viewfinder. CCD imager 1
4 is displayed on the monitor frame. A buffer (not shown) is provided at the input / output port of the DRAM 34, and the transfer rate of the image data is converted by the buffer. Therefore, the writing and reading of the image data are executed in parallel.

When the operator operates the shutter button 72 in the camera mode, the CPU 38 instructs the timing generator 16 to stop reading charges. Thereby, the image data is transferred to the CCD imager 14.
From the shutter button 7
The image data at the time point 2 is pressed is stored in the video memory area 3
4a. The CPU 38 reads out image data from the video memory area 34a by DMA,
4 to the compression / decompression circuit 26. At the same time, the CPU 38 gives a compression instruction to the compression / expansion circuit 26. The compression / expansion circuit 26 compresses the input image data according to the JPEG method, stores the compressed image data in an image file,
Then, the image file is provided to the memory card 36.
A write instruction is also given from the CPU 38 to the memory card 36, whereby the image file output from the compression / expansion circuit 26 is recorded on the memory card 36.

When the operator sets the mode setting switch 68 to the reproduction side, the system controller 65 sets the reproduction mode to the CPU 38. In response, the CP
U 38 reproduces a desired image file from the memory card 36 and supplies it to the compression / expansion circuit 26 via the bus 24. The compression / decompression circuit 26 is also supplied with a decompression instruction from the CPU 38. The compression / decompression circuit 26 decompresses the image data of the input image file by the JPEG method, and inputs the decompressed image data, that is, reproduced image data to the DRAM 34. In order to write the reproduced image data to the video memory area 34a, a write request is given from the compression / expansion circuit 26 to the memory control circuit 28, and the CPU 38 sends frame data to the memory control circuit 28 to specify the write position. Given.

In accordance with the write request and the frame data, the memory control circuit 28 writes the reproduced image data to the video memory area 34a. The frame data at this time has (0, 0) coordinate data, X size data of "640", and Y size data of "480", whereby the reproduced image data is written to the entire video memory area 34a. When the writing is completed, the CPU 38 inputs the same frame data and a read request to the memory control circuit 28, and in response, the memory control circuit 28 reads the reproduced image data from the video memory area 34a. The read reproduced image data is provided to the zoom circuit 22 via the bus 24, and is subjected to 1x zoom processing. That is, even if the playback mode is set, the playback image data is output to the video encoder 30 as it is unless the zoom button 70 is pressed. The video encoder 30 encodes the input reproduced image data, and as a result, the reproduced image (still image) is displayed on the monitor 32.

When the operator operates the zoom button 70 while the reproduced image is displayed on the monitor 32, the CP
U38 transmits frame data defining a part of the video memory area 34a and a read request to the memory control circuit 2
8 and further to the zoom circuit 22 zoom data for performing an enlarged zoom on the partial image data read from the video memory area 34a. The zoom data includes
In addition to the horizontal zoom magnification data and the vertical zoom magnification data, a part of the frame data, that is, the X size data of the frame, the X coordinate data of the upper left corner of the frame, and the Y coordinate data are included. The zoom circuit 22 enlarges the partial image data based on such zoom data, and the enlarged image is finally displayed on the monitor 32.

As shown in FIG. 5, when the zoom button 70 is depressed once while the 1 × reproduced image is displayed, the partial image of 320 pixels × 240 lines at the center of the reproduced image is doubled. The processing is applied, and the monitor 32 displays the enlarged image shown in FIG. Zoom button 70
When is pressed once more, the partial image of 160 pixels × 120 lines at the center of the 1 × reproduced image is subjected to 4 × zoom processing, and the display image is switched from FIG. 6 to FIG. In this way, the display image is enlarged each time the zoom button 70 is operated. Note that the dotted line drawn in the reproduced image shown in FIG. 5 is not actually displayed.

When any of the enlarged images is displayed on the monitor 32, the operator presses the cursor key 66a.
When any one of -66d is operated, the reading position of the partial image data in the video memory area 34a is updated. That is, the CPU 38 updates the frame data input to the memory control circuit 28, and the memory control circuit 28 reads out the partial image data from a different position from before. However, the operation of the cursor keys 66a to 66d causes the CPU
The zoom circuit 38 does not update the zoom data, and the zoom circuit 22 continues the same enlarged zoom processing as before. Thereby, the enlarged image displayed on the monitor 32 is scrolled.

As described above, the operation of the zoom button 70 in the reproduction mode indicates an instruction to enlarge the reproduced image, and the operation of the cursor keys 66a to 66d when the enlarged image is displayed indicates an instruction to scroll the displayed image. . Therefore, the display image is enlarged in response to the operation of the zoom button 70, and the display image is scrolled in response to the operation of the cursor keys 66a to 66d. After that,
A frame formed when reading out the reproduced image data written in the video memory area 34a is defined as a reproduced frame.

The memory control circuit 28 is configured as shown in FIG. The X size data and the Y size data included in the frame data are loaded into decoders 44 and 46, respectively, and the X coordinate data and the Y coordinate data are loaded into the address operation circuit 48. The address operation circuit 48 is configured as shown in FIG. 3, and the X coordinate data and the Y coordinate data are loaded into the registers 60 and 62 in detail. In the normal reproduction mode, the decoders 44 and 46 hold numerical data of “639” and “479”, respectively, and the registers 60 and 62 both hold numerical data of “0”.

However, when the zoom button 70 is operated once, the numerical data of the decoders 44 and 46 becomes "31".
9 "and" 239 ", respectively.
Numerical data of 0 and 62 are “160” and “12”.
When the zoom button 70 is operated again, the numerical data of the decoders 44 and 46 becomes "159" and "119", and the numerical data of the registers 60 and 62 become "240" and "119". 180 ".

As a result, as compared with a reproduction frame formed when the reproduction mode is set, FIG.
A reproduction frame is formed as shown in FIG. 8, and at the time of 4 × zoom, a reproduction frame is formed as shown in FIG. The numerical data held in the registers 60 and 62 is updated at the input timing of the vertical synchronization pulse _Vsync .

When the cursor keys 66a to 66d are operated in a state where an enlarged image of twice or more is displayed,
The numerical data of the decoders 44 and 46 is not updated, but the numerical data of the registers 60 and 62 are updated. As a result, the position of the reproduction frame is changed. The H counter 40 is incremented according to the pixel clock, and the count value (horizontal count value) of the H counter 40 is input to the address operation circuit 48 and the decoder 44. The decoder 44 compares the input horizontal count value with its own numerical value, and outputs a coincidence pulse when the two coincide. The H counter 44 is reset by the coincidence pulse, and the V counter 42 is incremented by the coincidence pulse. The count value (vertical count value) of the V counter 42 is given to the address operation circuit 48 and the decoder 46, and the decoder 46 resets the V counter 42 when the vertical count value matches its own numerical value. As described above, the H counter 40 is reset when counting the pixels corresponding to the X size of the frame, and the V counter 42 is reset when counting the lines corresponding to the Y size of the frame.

Referring to FIG. 3, the horizontal count value and the vertical count value are applied to adders 52 and 54 provided in address operation circuit 48, respectively. Adder 52
Adds the horizontal count value to the X coordinate data held in the register 60, and the adder 54 adds the vertical count value to the Y coordinate data held in the register 62. Adder 54
Is added to the multiplier 56, and the multiplier 56 multiplies the inputted addition result by the numerical data "640" held in the register 64. Adder 5
8 adds the result of addition by the adder 52 and the result of multiplication by the multiplier 56. That is, the address operation circuit 4
8 generates an address signal by calculating equation (1). This address signal specifies an address in the reproduction frame.

[0023]

## EQU1 ## Address = (horizontal count value + upper left X coordinate) +
(Vertical count value + upper left Y coordinate) × 640 The controller 50 receives an address signal from the address operation circuit 48 and a write / read request from the CPU 38 or the compression / expansion circuit 26, and sends an address signal and a W / R signal to the DRAM 34. And an enable signal. That is, the controller 50 outputs the address signal from the address operation circuit 48 as it is, and at the same time, sets the enable signal to high level. Further, when a write request is given, the W / R signal is set to a high level, and when a read request is given, the W / R signal is set to a low level. Such an address signal, W / R
The access to the desired address of the video memory area 34a is performed by the signal and the enable signal.

The zoom circuit 22 is configured as shown in FIG. The capacity of the line memories 22a and 22b is defined by the X size data included in the zoom data, and the capacity of the line memories 22a and 22b matches the X size of the reproduced frame. Video memory area 34
The reproduced image data read out of the reproduced frame a is written into the line memory 22a in response to the pixel clock, and is thereafter read out by one line with the same pixel clock. The read image data is written into another line memory 22b again and read one line later. Therefore, the line memories 22a and 22b
, Two consecutive lines of image data are output simultaneously. The image data output from the line memory 22a is directly input to the multiplier 22g, and is also input to the multiplier 22f with a delay of one pixel by the latch circuit 22c. The image data output from the line memory 22b is directly input to the multiplier 22i, and is also input to the multiplier 22h with a delay of one pixel by the latch circuit 22d.

To the multipliers 22g and 22i, the decimal number of the numerical data output from the adder 22y is input, and to the multipliers 22f and 22h, this decimal number is subtracted from the subtractor 22.
A complement number subtracted from "1.0" in e is input. For this reason, the image data given to the multipliers 22g and 22i are weighted by decimal numbers, and the image data given to the multipliers 22f and 22h are weighted by complements. The outputs of the multipliers 22f and 22g are
2j, and the outputs of multipliers 22h and 22i are added by adder 22k. Through such multiplication processing and addition processing, horizontal zoom is applied to the image data.

The addition data output from the adders 22j and 22k are input to multipliers 22n and 22p. The decimal number of the numerical data output from the adder 22z is input to the multiplier 22p, and the decimal number is
The complement obtained by subtracting m from “1.0” is input to the multiplier 22n. Therefore, the addition data output from the adder 22j is multiplied by a complement, and the addition data output from the adder 22k is multiplied by a decimal. The outputs of the multipliers 22n and 22p are then
Thus, zoom image data that has been subjected to zoom processing in both the horizontal direction and the vertical direction is obtained.

The numerical data output from the adders 22y and 22z is obtained as follows. The maximum count value of the H counter 22r is “639”, and the maximum count value of the V counter 22s is “479”. The H counter 22r is incremented by the pixel clock, outputs a carry signal at the maximum count value, and is reset by the horizontal synchronization signal. On the other hand, the V counter 22s is incremented by the carry signal output from the H counter 22r, and is reset by the vertical synchronization signal. The divider 22t divides the count value of the H counter 22r by the horizontal zoom magnification output from the CPU 38, and the divider 22u divides the count value of the V counter 22s by the vertical zoom magnification output from the CPU 38. The division result of the divider 22t is added to the upper left X coordinate data of the reproduced frame by the adder 22y, and the division result of the divider 22u is added to the upper left Y coordinate data of the reproduced frame by the adder 22z.

The addition result of each of the adders 22y and 22z indicates to which horizontal position and vertical position of the original image the zoom pixel output from the adder 22q is currently. The horizontal position data and the vertical position data of the original image are output from the adders 22y and 22z. The signal is input to the multiplier 22p. The original image is C
The image is a subject image that has been incident on the CD imager 14, and original image data is obtained from the signal processing circuit 20.

The CPU 38 processes the flowcharts shown in FIGS. 9 to 12 when the mode setting switch 68 is set to the reproduction side. First, in step S1, zoom data and frame data are initialized. That is, the horizontal zoom magnification and the vertical zoom magnification are “1”, the X size and the Y size are “640” and “480”, and the upper left X
The coordinate and the upper left Y coordinate are both “0”. next,
In step S3, the image file is reproduced from the memory card 36. In step S3, a read instruction is given to the memory card 36 to read, for example, the latest image file, and the compressed image data stored in the image file is expanded by the compression / expansion circuit 26. When the decompression is completed, a write request for decompressed image data is input from the compression / decompression circuit 26 to the memory control circuit 28. CPU3
In step S5, the initial frame data is input to the memory control circuit 28 at the same timing as the write request, and the expanded image data is written to the video memory area 34a. As a result, a frame corresponding to a monitor frame is formed in the video memory area 34a, and expanded image data, that is, reproduced image data is written in this frame.

Next, the CPU 38 gives initial frame data and a read request to the memory control circuit 28 in step S7, and reads reproduced image data from the video memory area 34a. As a result, the reproduced image is displayed on the monitor 3
2 is displayed. Thereafter, the CPU 38 monitors the operation of the cursor keys 66c or 66d in step S9, and monitors the operation of the zoom button 70 in step S13. If neither operation is performed, the CPU 38 proceeds to step S7.
Is repeated, whereby the same still image is continuously displayed on the monitor 32.

On the other hand, when the cursor key 66c or 66d is operated, the CPU 38 reproduces another image file from the memory card 36 in step S11, and proceeds to step S5.
Return to Also at this time, the CPU 38 gives a read instruction to the memory card 36 to read a desired image file,
The compressed image data stored in the image file is expanded by the compression and expansion circuit 26. The decompressed image data is overwritten in the video memory area 34a in step S5. Thereby, the reproduced image displayed on the monitor 32 is updated.

On the other hand, when the zoom button 70 is operated,
In step S15, the CPU 38 determines whether the current zoom mode is the preset mode or the auto mode. If the current zoom mode is the preset mode, the process proceeds to step S17. If the current mode is the auto mode, the process proceeds to step S27. The zoom mode is set by a menu operation. In the preset mode, first, the zoom data and the frame data are updated in step S17. That is, the horizontal zoom magnification and the vertical zoom magnification are set to “2”, the X size and the Y size of the reproduction frame are set to “320” and “240”, and the X coordinate and the Y coordinate of the upper left corner of the reproduction frame are set. Set to “160” and “120”. Subsequently, in step S19, a read request is issued to the memory control circuit 2
8 to read out the image data in the reproduction frame.
The read image data is subjected to enlargement zoom processing by the zoom circuit 22, whereby the enlarged image is displayed on the monitor 32.

When the cursor keys 66a to 66d are operated, the CPU 38 determines "YES" in a step S21, and updates the frame data in a step S23. Specifically, the upper left X coordinate and the upper left Y coordinate are updated. As a result, the position where the reproduced frame is formed in the video memory area 34a is changed. Therefore, the next step S1
By the process of No. 9, the display image on the monitor 32 is scrolled.

When the zoom key 70 is operated, the CPU 3
In step S25, "YES" is determined in step S25,
At 27, both the zoom data and the frame data are updated. If the current display image is an enlarged image of 2 × zoom, the horizontal zoom magnification and the vertical zoom magnification are set to “4”, and the X size and the Y size of the reproduction frame are set to “1”.
60 "and" 120 ", and the X and Y coordinates of the upper left corner of the playback frame are set to" 240 "and" 180 ", so that the next step S
By the process in step 19, the central portion of the enlarged image at the double zoom is further enlarged twice. That is, an image four times as large as the image displayed on the monitor 32 before “YES” is determined in step S13 is displayed.

When the end key 74 is operated, the CPU 38
Determines "YES" in the step S29, and proceeds to the step S1
Return to In the auto mode, first, in step S31, FIG.
The subroutine shown in FIG. 2 is processed. Referring to FIG.
The CPU 38 reads the pointer data from the character area 34b of the DRAM 34 in step S51, and displays the pointer on the monitor 32. Next, operations of the cursor keys 66a to 66d and the enter key 70 are monitored in steps S53 and S57, respectively. Cursor key 66a
When any one of .about.66d is operated, the CPU 38 determines "YES" in a step S53, changes the display position of the pointer according to the key operation in a step S55, and returns to the step S51. On the other hand, when the enter key 76 is operated, it is determined in a step S57 whether or not the flag 38a is set. If the flag 38a is not set,
The CPU 38 determines the current pointer position as the upper left coordinate of the reproduction frame in step S61, and sets the flag 38a in step S63. Then, the process returns to step S51.

If it is determined in step S59 that the flag 38a is set, the CPU 38 determines the current pointer position as the lower right coordinate of the reproduction frame in step S65. Then, after resetting the flag 38a in step S67, the X size and the Y size of the reproduced frame are calculated in accordance with Equation 2 in step S69. That is, the X size is obtained by subtracting the upper left X coordinate from the lower right X coordinate of the reproduced frame, and the Y size is obtained by subtracting the upper left Y coordinate from the lower right Y coordinate of the reproduced frame.

[0037]

X size = lower right X coordinate-upper left X coordinate Y size = lower right Y coordinate-upper left Y coordinate Upper left X coordinate: X coordinate at the upper left corner vertex of the reproduction frame Upper left Y coordinate: upper left corner of the reproduction frame Y coordinate at the vertex Lower right X coordinate: X coordinate at the lower right corner vertex of the reproduction frame Lower right Y coordinate: Y coordinate at the lower right corner vertex of the reproduction frame Returning to FIG. I do. That is, the horizontal zoom magnification is obtained by dividing the X size of the monitor frame by the X size of the playback frame, and the Y size of the monitor frame is calculated as the Y size of the playback frame.
Divide by size to find the vertical zoom factor.

[0038]

## EQU3 ## Horizontal zoom magnification = X size of monitor frame /
X size of playback frame Vertical zoom magnification = Y size of monitor frame / Y size of playback frame In step S35, upper left coordinate data and size data of the frame obtained in step S31 are set in memory control circuit 28, and step S37 is performed. Then, the same upper left coordinate data and X size data and the zoom magnification calculated in step S33 are set in the zoom circuit 22. Thereafter, the same processes as those in steps S19 to S29 in FIG. 10 are performed, and thus, duplicated description will be omitted.

In this way, the image in the reproduction frame formed by the operator is displayed on the monitor 32 in an enlarged manner.

[Brief description of the drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a block diagram showing a part of the embodiment in FIG. 1;

FIG. 3 is a block diagram showing another part of the embodiment in FIG. 1;

FIG. 4 is a block diagram showing a part of the embodiment in FIG. 3;

FIG. 5 is an illustrative view showing one portion of an operation in a reproduction mode;

FIG. 6 is an illustrative view showing another portion of the operation in the reproduction mode;

FIG. 7 is an illustrative view showing another portion of the operation in the reproduction mode;

FIG. 8 is an illustrative view showing a reproduction frame;

FIG. 9 is a flowchart showing a part of the operation in the reproduction mode.

FIG. 10 is a flowchart showing another portion of the operation in the reproduction mode.

FIG. 11 is a flowchart showing another portion of the operation in the reproduction mode.

FIG. 12 is a flowchart showing yet another portion of the operation in the reproduction mode.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Digital camera 22 ... Zoom circuit 24 ... Bus 26 ... Compression / expansion circuit 28 ... Memory control circuit 34 ... DRAM 36 ... Memory card 38 ... CPU

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[Procedure amendment]

[Submission date] March 23, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

3. The digital camera according to claim 1, wherein said position data is frame data for defining a frame at said read position, and said reading means reads said partial image data from said frame.

[Procedure amendment]

[Submission date] August 4, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

[0004]

SUMMARY OF THE INVENTION The present invention, in a digital camera for displaying an image based on image data read out from the memory in the monitor, the expansion of a portion of the image finger
And a coordinate data defining a partial readout position of the memory in response to the enlargement instruction by the enlargement instruction means.
Over data and output means for outputting a zoom data defining the enlargement zoom magnification and size data, output by the output means
Holding means for holding the input coordinate data,
Defined by the coordinate data and size data
Reading means for reading the partial image data from a predetermined position, enlarging zoom means for enlarging the partial image data according to the zoom data, and an enlarged image displayed on the monitor
Scroll instruction means for instructing scrolling of an image, and
Scroll the coordinate data held by the holding means
Update means for updating in response to a scroll instruction by the indicating means
A digital camera, comprising a step.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

In accordance with the write request and the frame data, the memory control circuit 28 writes the reproduced image data to the video memory area 34a. The frame data at this time has coordinate data of (0, 0), X size data of “6 39 ”, and Y size data of “4 79 ”, whereby the reproduced image data is written to the entire video memory area 34 a. It is. When the writing is completed, the CPU 38 inputs the same frame data and a read request to the memory control circuit 28, and in response, the memory control circuit 28 reads the reproduced image data from the video memory area 34a. The read reproduced image data is provided to the zoom circuit 22 via the bus 24, and is subjected to 1x zoom processing. That is, even if the playback mode is set, the playback image data is output to the video encoder 30 as it is unless the zoom button 70 is pressed. The video encoder 30 encodes the input reproduced image data, and as a result, the reproduced image (still image) is displayed on the monitor 32.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0029

[Correction method] Change

[Correction contents]

The CPU 38 processes the flowcharts shown in FIGS. 9 to 12 when the mode setting switch 68 is set to the reproduction side. First, in step S1, zoom data and frame data are initialized. That is, the horizontal zoom magnification and the vertical zoom magnification are set to “1”, the X size and the Y size are set to “6 39 ” and “4 79 ”, and the upper left X
The coordinate and the upper left Y coordinate are both “0”. next,
In step S3, the image file is reproduced from the memory card 36. In step S3, a read instruction is given to the memory card 36 to read, for example, the latest image file, and the compressed image data stored in the image file is expanded by the compression / expansion circuit 26. When the decompression is completed, a write request for decompressed image data is input from the compression / decompression circuit 26 to the memory control circuit 28. CPU3
In step S5, the initial frame data is input to the memory control circuit 28 at the same timing as the write request, and the expanded image data is written to the video memory area 34a. As a result, a frame corresponding to a monitor frame is formed in the video memory area 34a, and expanded image data, that is, reproduced image data is written in this frame.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0032

[Correction method] Change

[Correction contents]

On the other hand, when the zoom button 70 is operated,
In step S15, the CPU 38 determines whether the current zoom mode is the preset mode or the auto mode. If the current zoom mode is the preset mode, the process proceeds to step S17. If the current mode is the auto mode, the process proceeds to step S27. The zoom mode is set by a menu operation. In the preset mode, first, the zoom data and the frame data are updated in step S17. That is, the horizontal zoom magnification and the vertical zoom magnification are set to “2”, the X size and the Y size of the reproduction frame are set to “3 19 ” and “2 39 ”, and the X coordinate and Y of the upper left corner of the reproduction frame are set. The coordinates are set to “160” and “120”. Subsequently, in step S19, a read request is issued to the memory control circuit 2
8 to read out the image data in the reproduction frame.
The read image data is subjected to enlargement zoom processing by the zoom circuit 22, whereby the enlarged image is displayed on the monitor 32.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0034

[Correction method] Change

[Correction contents]

When the zoom key 70 is operated, the CPU 3
In step S25, "YES" is determined in step S25,
At 27, both the zoom data and the frame data are updated. If the current display image is an enlarged image of 2 × zoom, the horizontal zoom magnification and the vertical zoom magnification are set to “4”, and the X size and the Y size of the reproduction frame are set to “1”.
59 "and" 1 19 ", and the X and Y coordinates of the upper left corner of the reproduction frame are set to" 240 "and" 180 ", so that the next step S
By the process in step 19, the central portion of the enlarged image at the double zoom is further enlarged twice. That is, an image four times as large as the image displayed on the monitor 32 before “YES” is determined in step S13 is displayed.

Claims (3)

[Claims] 1. A digital camera for outputting image data read from a memory from a monitor, input means for inputting an operator's instruction, and defining a partial reading position of the memory in response to the operator's enlargement instruction. Output means for outputting position data to be performed and zoom data for defining an enlarged zoom magnification; reading means for reading partial image data from a position indicated by the position data in the memory; and enlarging and zooming processing on the partial image data according to the zoom data. A digital camera, comprising: a zooming means for applying; and the output means includes first updating means for updating the position data in response to a scroll instruction from the operator. 2. The digital camera according to claim 2, wherein said output means includes second update means for updating said position data and said enlargement zoom magnification in response to said enlargement instruction inputted next. 3. The digital camera according to claim 1, wherein said position data is frame data for defining a frame at said read position, and said reading means reads said partial image data from said frame.