JP2012079141A - Mobile display device, operation control method therefor, and operation program therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an imaged document to be easily viewed even on a small display screen.SOLUTION: In an imaged document 40, a first area 41, a second area 42 and a third area 43 that are adjacent in the vertical direction are determined. The size of the second area 42 is enlarged to become the same as the respective sizes of the first area 41 and the third area 43. Image parts in the first area 41 and the third area 43 are displayed on the display screen of a mobile phone at the equal magnification, and an image part in the second area 42 is enlarged and displayed on the display screen of the mobile phone. When scrolling is performed, the second area 42 is moved to the right direction, and an image part in the moved second area 42 is enlarged and displayed on the display screen. Since the image part in the second area 42 is enlarged, it is easily viewed.

Description

  The present invention relates to a portable display device, an operation control method thereof, and an operation program thereof.

  A mobile terminal called a so-called smartphone can not only make a call but also read an image or an imaged document. Since such a portable terminal has a small display screen, it is necessary to scroll to read an image or a document. For this reason, there is one that automatically scrolls according to the reading speed of the user (Patent Document 1). In addition, there is an apparatus that enlarges a character designated by the user (Patent Document 2).

  However, it is still difficult to read a document on a small display screen.

2001-282414 2008-250948

  An object of the present invention is to make it easy to read an imaged document even on a small display screen.

  The portable display device according to the present invention includes a first area, a second area, and a third area adjacent to each other in the vertical direction in a document image representing a document as an image, and the second area at a given magnification. A region determining means for determining the first region, the second region, and the third region in which the second region has the same size as the first region and the third region by enlarging the region; Extraction means for extracting the portions included in the first area, the second area, and the third area determined by the means, and the portions included in the second area among the portions extracted by the extraction means; , An enlargement means for enlarging at the given enlargement ratio, a portion of the first area and a portion of the third area extracted by the extraction means, and a portion of the second area enlarged by the enlargement means, Position in document image Display device that displays on the display screen in the same positional relationship as the relationship, the second region is moved in the horizontal direction as the scroll direction in response to the scroll command, and the movement of the second region is stopped in response to the scroll stop command The first area determination control means for controlling the area determination means, the extraction process by the extraction means, the enlargement process by the enlargement means, the display process by the display device, and the process by the first area determination control means It has the control means which repeats.

  The present invention also provides an operation control method suitable for the portable display device. That is, in this method, the area determination means includes a first area, a second area, and a third area that are adjacent in the vertical direction in a document image representing a document as an image, and has a given enlargement ratio. By magnifying the second region, the first region, the second region, and the third region are determined so that the second region has the same size as the first region and the third region. A portion included in each of the first region, the second region, and the third region determined by the region determination unit is extracted, and the enlargement unit extracts a second region from the portions extracted by the extraction unit. The display device is enlarged at the given enlargement ratio, and the display device is enlarged by the first and third areas extracted by the extraction means and the second enlargement means by the enlargement means. In the above document image The area determination control means moves the second area in the horizontal direction that is the scroll direction in response to the scroll command and the second in response to the scroll stop command. The control means repeats the extraction process by the extraction means, the enlargement process by the enlargement means, the display process by the display device, and the process by the first area determination control means.

  The present invention also provides a computer-readable program suitable for carrying out the operation control method of the portable display device. A recording medium storing such a program may be provided.

  According to the present invention, in a document image representing a document as an image, the first area, the second area, and the third area that are adjacent in the vertical direction are enlarged at a given enlargement ratio. Thus, the first area, the second area, and the third area are determined so that the second area has the same size as the first area and the third area. Portions included in the determined first region, second region, and third region are extracted. Of the extracted parts, the part included in the second region is enlarged at a given enlargement ratio. The extracted first region portion and third region portion and the enlarged second region portion are displayed on the display screen. In response to the scroll command, the second region is moved in the horizontal direction, which is the scroll direction, and in response to the scroll stop command, the movement of the second region is stopped. When the second area moves in response to the scroll command, a portion included in the second area after the movement is extracted, so that the extracted portion is enlarged and displayed. Since the second area portion is enlarged and scrolled as compared with the first area portion and the third area portion, even if the display screen is relatively small, the second area portion Is easy to see.

  A scroll stop command is generated in response to the touch panel formed on the display screen and the touch panel portion corresponding to the second area displayed on the display screen being touched. , Further may include first command generation means for generating a scroll command in response to the touch panel portion corresponding to the second region portion displayed on the display screen not being touched. .

  In response to the end of the document image in the scroll direction being extracted by the extracting means, the first region and the first region are located at the end of the document image in the direction opposite to the scroll direction and shifted downward. You may further provide the 2nd area | region determination control means which controls the said area | region determination means so that 2 area | region and 3rd area | region may be determined.

  Preferably, the touch panel is touched in the touch panel formed on the display screen and the portion of the touch panel corresponding to the portion of the second area displayed on the display screen. Second command generation means for generating a scroll command in a direction determined according to a direction in which the object traces on the touch panel is further provided.

  The first region portion and the third region portion extracted by the extraction means and the second region portion enlarged by the enlargement means are displayed on the display screen, so that a scroll command is generated. Three command generation means may be further provided.

It is a block diagram which shows the electric constitution of a mobile telephone. It is a flowchart which shows the process sequence which browses the imaged document. It is a flowchart which shows the process sequence which browses the imaged document. It is an example of a document image. It is an example of a display screen. It is an example of a display screen. It is an example of a document image. It is an example of a display screen. It is an example of a display screen. It is an example of a document image. It is an example of a display screen.

  FIG. 1 shows an embodiment of the present invention and is a block diagram showing an electrical configuration of a mobile phone (portable display device) called a so-called smartphone.

  The overall operation of the mobile phone 1 is controlled by the control device 2.

  The mobile phone 1 is provided with a communication device 10 and an antenna 11 for communication with other mobile phones, access to the Internet, and the like. A program 12 for performing the operation described later is downloaded to the mobile phone 1 via the antenna 11. When the downloaded program 12 is installed in the mobile phone 1, the mobile phone 1 performs an operation described later. However, when the mobile phone 1 is provided with a memory card reader (not shown), the program stored in the memory card is read using the memory card reader, and the read program is read. You may make it install in the mobile telephone 1. FIG.

  Further, the mobile phone 1 is provided with a display device 3 for displaying a document, an image or the like on a display screen. A touch panel 4 is formed on the display screen of the display device 3. By touching the touch panel 4 formed on the display screen, the user can give various commands to the mobile phone 1.

  The mobile phone 1 also includes a memory 5 in which programs and predetermined data are stored. Further, the cellular phone 1 includes a speaker 8 and a microphone 9. The audio signal is amplified by the amplifier circuit 7 and given to the speaker 8, so that the audio is output from the speaker 8. A sound signal representing sound input from the microphone 9 is amplified by the amplifier circuit 7 and input to the control device 2.

  In the mobile phone 1 according to this embodiment, an imaged document (referred to as a document image) can be displayed on the display screen of the display device 3. When displaying a document image, since the display screen is small, it is difficult to read the document if all the documents are displayed on the display screen. For this purpose, a part of the document image is displayed on the display screen. Then, it is necessary to scroll to see a part other than the part displayed on the display screen. In this embodiment, when the document image is viewed while scrolling, it is easy to see.

  2 and 3 are flowcharts showing a processing procedure for browsing a document image on the mobile phone 1. FIG. 4 is an example of an imaged document.

  The document image 40 shown in FIG. 4 is not represented by text data, but is represented by an image file. The image file representing the document image 40 is stored in the memory 5 and is displayed on the display screen of the display device 3 by being read from the memory 5.

  First, in the document image 40, a first area 41, a second area 42, and a third area 43 adjacent in the vertical direction are determined (step 20 in FIG. 2). The second region 42 sandwiched between the first region 41 and the third region 43 has the same size as the first region 41 and the third region 43 by being enlarged at a given magnification. It will be. The enlargement ratio may be set using the touch panel 4 or may be determined in advance. A portion in a region 45 (hereinafter referred to as a display region) that is a combination of the first region 41, the second region 42, and the third region 43 is displayed on the display screen of the display device 3. The size of the first region 41 and the size of the third region 43 are the same, but the second region 42 is enlarged by a given enlargement ratio to increase the size of the first region 41 and the third region 43. Therefore, the size of the second region 42 is smaller than the size of the first region 41 (third region 43).

  The position of the extraction area 45 determined first may be any position in the document image 40, but will preferably be the leftmost position of the document image 40. When the extraction area 45 is positioned at the upper left of the document image 40, the upper left origin of the second area 42 is preferably the upper left origin of the document (the first character of the document). However, it goes without saying that the extraction region 45 can be moved to a desired position by giving a command to move the extraction region 45 from the touch panel 4.

  When the third region 43 is determined from the first region 41, the parts (image portions) in the respective regions of the first region 41, the second region 42, and the third region 43 from the document image 40 are determined. Extracted (step 21 in FIG. 2). Of the extracted image portions in the first region 41, the second region 42, and the third region 43, the image portions in the first region 41 and the third region 43, respectively. Is displayed on the display screen of the display device 3 (step 22 in FIG. 2).

  FIG. 5 is an example of the display screen 50.

  The display screen 50 is divided into three in the vertical direction, and a first display area 51, a second display area 52, and a third display area 53 are defined. Although the frames indicating the first display area 51 to the third display area 53 are not formed for each area on the display screen 50, such a frame is used when the document image 40 is viewed. It may be formed.

  In the first display area 51, the image portion in the first area 41 in the document image 40 is displayed at the same magnification. Similarly, in the third display area 53, the image portion in the third area 43 in the document image 40 is displayed at the same magnification. In the second display area 52, the image portion in the second area 42 in the document image 40 is displayed. The second area 42 is enlarged at a predetermined enlargement ratio, thereby the first area 41 (first area 41). 3 is the same size as the area 43). The image portion in the second area 42 is enlarged at the enlargement ratio and displayed in the second display area 52 (steps 23 and 24 in FIG. 2).

  FIG. 6 is an example of the display screen 50.

  As described above, in the first display area 51 and the third display area 53, the image portions in the first area 41 and the third area 43 in the document image 40 are respectively displayed at the same magnification.

  On the other hand, in the second display area 52, the image portion in the second area 42 in the document image 40 is the size of the second display area 52 as described above. The image is enlarged and displayed at such an enlargement rate. Since the characters displayed in the second display area 52 are relatively larger than the characters displayed in the first display area 51 and the third display area 53, they are easy to see.

  Referring to FIG. 3, if the second display area 52 (second area 42) is not touched (NO in step 25), a scroll command is generated for scroll processing (step 26). When the second display area 52 is touched (YES in step 25), a scroll stop command is issued to stop the scroll process (step 31).

  As described above, when the scroll command is generated (step 26) without touching the second display area 52 (NO in step 25), the second area 42 is moved rightward (step 27). If the right side of the second area 42 does not become the right end of the document image 40 due to the movement in the right direction (NO in step 28), the process returns to step 21 in FIG. Are displayed on the display screen 50 from the first display area 51 to the third display area 53 (steps 21 to 24).

  Referring to FIG. 7, assume that second region 42 has moved to the right and moved to a position indicated by reference numeral 42A. Then, the image portion in the second area 42 at the position indicated by the reference numeral 42A is extracted, and the extracted image portion is enlarged and displayed in the second display area 52 on the display screen 50.

  FIG. 8 is an example of the display screen 50.

  As described above, in the second display area 52, the image portion in the second area 42 moved to the position indicated by reference numeral 42A in FIG. 7 is enlarged and displayed. As a result, scroll processing has been performed. The image portions displayed in the first display area 51 and the third display area 53 do not change when the second display area 52 is scrolled to the right.

  It is assumed that the right side of the second area 42 becomes the right end of the document image 40 as indicated by reference numeral 42B in FIG. 7 as a result of the second area 42 moving to the right (step 27 in FIG. 3) ( YES in step 28 of FIG. 3).

  FIG. 9 is an example of the display screen 50.

  When the right side of the second area 42 is the right end of the document image 40, the right end portion of the document image 40 is displayed in the second area 52 of the display screen 50. As indicated by reference numeral 42B in FIG. 7, the second area 42 has no part to be newly displayed even if it is further moved to the right side. Therefore, the second area 42 is located at the left end of the document image 40 as shown in FIG. The entire extraction area 45 including the first area 41 and the third area 43 is shifted downward by one line (step 29 in FIG. 3).

  FIG. 10 shows the relationship between the document image 40 and the extraction area 45.

  As described above, when the extraction area 45 is shifted downward by one line, the extraction area 45 moves to the reference 45C. Then, on the display screen 50, the image portion in the extraction area 45 moved to the reference numeral 45C is displayed.

  FIG. 11 is an example of the display screen 50.

  As shown in FIG. 10, when the extraction area 45 is shifted downward by one line, the image portion in the extraction area 45 moved to the position of 45C is the first display area 51, the second display area. 52 and the third display area 53 are displayed. As described above, the image portion in the second display region 52 is enlarged as compared with the image portions in the first display region 51 and the third display region 53.

  When the right end portion of the document image 40 is displayed by the scroll processing described above, the left end portion of the document image 40 shifted downward by one line is displayed on the display screen 50. Since the text is continuously displayed on the display screen 50 when the document image 40 is being read, the text is easy to read.

  In the above-described embodiment, since the scroll process is performed when the second display area 52 is not touched, the image portion in the extraction area 45 of the document image 40 is displayed on the display screen 50. A scroll command is generated by this, but conversely, the scroll processing may be performed by touching the second display area 52. For example, according to the direction in which an object such as a finger touching the touch panel 4 or a touch pen traces on the touch panel 4, a scroll command in that direction may be generated. When the finger, the touch pen, or the like moves leftward on the touch panel 4, the second region 42 described above moves leftward (or rightward), and scroll processing is performed. Further, on the touch panel 4, when the finger, the touch pen, or the like moves in the right direction, the second area 42 described above moves in the right direction (or left direction), and scroll processing is performed.

  Furthermore, in the embodiment described above, the text displayed in each of the first area 41, the second area 42, and the third area 43 is four lines, but is not limited to four lines and may be one line. Any other number of lines may be used.

  In the above embodiment, an image file representing the document image 40 is stored in the memory 5 and a part of the document image 40 represented by the image file is scrolled and displayed on the display screen 50. The image file representing the image 40 may be stored in a server computer (not shown) without being stored in the mobile phone 1. In such a case, the cellular phone 1 requests the server computer to transmit the image portion in the extraction area 45, and a file representing the image portion is transmitted from the server computer to the cellular phone 1 in response to the request. It will be. When the file transmitted from the server computer is received by the mobile phone 1, the image portion in the extraction area 45 is displayed on the display screen 50. When the scroll process is performed as described above, the generated scroll command is transmitted from the mobile phone 1 to the server computer, and the second area 42 is moved in the server computer. A file representing the image portion included in the second area 42 after the movement is transmitted from the server computer to the cellular phone 1, and the scrolled image is displayed on the display screen 50 of the cellular phone 2 as described above. It will be.

1 Mobile phone (portable display device)
2 Control device (extraction means, enlargement means, first area determination control means, control means)
3 Display device 4 Touch panel

Claims (7)

In a document image representing a document as an image, the second region is enlarged by a given enlargement factor in the first region, the second region, and the third region adjacent in the vertical direction. A region determining means for determining the first region, the second region, and the third region in which the region is the same size as the first region and the third region;
Extraction means for extracting portions included in each of the first area, the second area, and the third area determined by the area determination means;
An enlarging means for enlarging a portion included in the second area among the parts extracted by the extracting means at the given enlargement rate;
The first area portion and the third area portion extracted by the extraction means and the second area portion enlarged by the enlargement means are displayed on the display screen with the same positional relationship as that in the document image. Display device to display,
A first area that controls the area determining means to move the second area in a horizontal direction that is a scroll direction in response to a scroll command and to stop the movement of the second area in response to a scroll stop command Determination control means, and control means for repeating the extraction process by the extraction means, the enlargement process by the enlargement means, the display process by the display device, and the process by the first region determination control means,
A portable display device comprising: A scroll stop command is generated in response to the touch panel formed on the display screen and the touch panel portion corresponding to the second area portion displayed on the display screen being touched. , First command generating means for generating a scroll command in response to the fact that the touch panel portion corresponding to the second region portion displayed on the display screen is not touched;
The portable display device according to claim 1, further comprising: In response to the end of the document image in the scroll direction being extracted by the extracting means, the first region and the first region are located at the end of the document image in the direction opposite to the scroll direction and shifted downward. Second region determination control means for controlling the region determination means to determine the second region and the third region;
The portable display device according to claim 1, further comprising: The touch panel formed on the display screen and the touch panel portion corresponding to the second area portion displayed on the display screen touch the object touching the touch panel. -A second command generating means for generating a scroll command in a direction determined according to the direction of tracing on the panel;
The portable display device according to claim 1, further comprising: The first region portion and the third region portion extracted by the extraction means and the second region portion enlarged by the enlargement means are displayed on the display screen, so that a scroll command is generated. 3 command generation means,
The portable display device according to claim 1, further comprising: The area determining means enlarges the second area at a given enlargement ratio in the first, second, and third areas adjacent in the vertical direction in the document image representing the document as an image. By doing so, the first region, the second region, and the third region in which the second region has the same size as the first region and the third region are determined,
The extracting means extracts portions included in the first area, the second area, and the third area determined by the area determining means,
The enlargement means enlarges the part included in the second area among the parts extracted by the extraction means at the given enlargement rate,
The display device uses the same positional relationship as the positional relationship in the document image for the first region portion and the third region portion extracted by the extraction means, and the second region portion enlarged by the enlargement means. On the display screen,
The area determination control means controls the determination means so as to move the second area in the horizontal direction that is the scroll direction in response to the scroll command and to stop the movement of the second area in response to the scroll stop command. ,
The control means repeats the extraction process by the extraction means, the enlargement process by the enlargement means, the display process by the display device, and the process by the first area determination control means.
Operation control method of portable display device. A computer-readable program for controlling a computer of a portable display device,
In a document image representing a document as an image, the second region is enlarged by a given enlargement factor in the first region, the second region, and the third region adjacent in the vertical direction. The first region, the second region, and the third region are determined to be the same size as the first region and the third region,
A portion included in each of the determined first region, second region, and third region is extracted;
Among the extracted parts, the part included in the second area is enlarged at the given enlargement ratio,
Displaying the extracted first region portion and third region portion and the enlarged second region portion on the display screen in the same positional relationship as the positional relationship in the document image;
In response to the scroll command, the second region is moved in the horizontal direction as the scroll direction, and in response to the scroll stop command, the movement of the second region is stopped.
An operation program for controlling the computer of the portable display device to repeat the extraction process, the enlargement process, the display process, and the movement of the second area and the stop process of the movement.

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