JP4094512B2 - Screen scroll control device - Google Patents

Description

The present invention, one-dimensional vertical scrolling according to the reading order of the document image on the screen, to scroll two-dimensionally screen, thereby scroll control equipment capable of displaying an image of a desired area on the screen about the.

  In general, when a document image is displayed by an image display device of a personal computer, a PDA, or a portable telephone tower, the number of pixels of the document image is larger than the displayable size (number of vertical and horizontal pixels) of the display device. List display may not be possible.

  In order to eliminate this inconvenience, a reduced image display (thumbnail display or the like) is performed and a list display is also performed. However, in this display, the contents (characters) of the document image may not be decoded.

  Thus, it is generally performed to display a part of a large document image in a size larger than the thumbnail display and to scroll the screen by a scroll bar provided in the window. For example, in the case of a vertically written document, horizontal scrolling is performed, the information from the beginning of one line to the end of the line is viewed, and when the display is shifted to the next line, vertical scrolling is further performed using a vertical scroll bar. A dimensional operation is required, which is troublesome for the user. In particular, a terminal such as a PDA or a mobile phone that is operated while walking or with one hand, even if a seesaw key that can perform horizontal scrolling and vertical scrolling is provided, two-dimensional operation is not easy. Absent.

Furthermore, in Patent Document 1, as a method for displaying a document in any limited screen space of a PDA, even when there are a plurality of windows, only a necessary set of scroll bars is displayed, or a display position with respect to the entire document is displayed. A method of displaying a measure of the number is disclosed. In Japanese Patent Laid-Open No. 11-213011, the display area includes an area for displaying a thumbnail (reduced image) and an area for displaying a part of a document, and a part of the area is highlighted. Has been proposed to move up and down in synchronization with scrolling.
JP 2000-159941 A

  However, even in the technologies described in these reports, there is a problem that the user cannot read the document unless the vertical scroll and the horizontal scroll are repeated two-dimensionally, and the operability is extremely poor.

The object of the present invention is to perform two-dimensional operation according to the reading order of the document images on the screen by one-dimensional operation (for example, scrolling up and down, or rotating a button in one direction like a roller provided in a recent intelligence mouse). to screen to scroll through, thereby to provide a scroll control equipment capable of displaying an image of a desired region on the screen.

The present invention includes a resolution changing means for enlarging and reducing an image displayed on a display device, and a scroll device for two-dimensionally scrolling the image displayed on the display device, and a document image displayed on the display device. In a scroll control device that controls scrolling, a reading order determining unit that analyzes a document image displayed on a display device and determines a reading order of the document image, and that is determined by the reading order determining unit according to a unified scroll operation Display instruction means for scroll- displaying a part of the document image in accordance with the read order, and when the document image larger than the screen size of the display device is displayed by the resolution changing means, the document image is read in the reading order. Read according to the reading order determined by the determining means, display according to the display instruction means, the screen includes the end of the line, and the next character When a display instruction is given, the resolution changing unit temporarily displays the entire document in a reduced size, then switches to the previous resolution and jumps the display to the screen for displaying the document image from the beginning of the next line. It is characterized by having.

In the present invention, when a document image is to be displayed by an image display device of a personal computer, PDA, or portable telephone tower, a scroll control device that is easy for a user to read even if the display image is larger than the display size. it is possible to provide a location.

  FIG. 1 is a block diagram showing an embodiment of a scroll control device of the present invention. The scroll control device 1 includes a control main body 11, a reading order determination unit 12, a display instruction unit 13, a movement amount change unit 14, a resolution change unit 15, a scroll device 16, and a communication unit 17. . The control main body 11 can receive a scroll instruction signal from the scroll device 16 and perform scrolling according to the instruction. The reading order determination means 12 can determine the reading order of a column of documents such as columns. The display instruction unit 13 can display a part or all of the document image on the display device. The movement amount changing means 14 can change the ratio between the size of the scroll instruction and the screen scroll without synchronizing the scroll instruction by the scroll device 16 with the screen scroll. The resolution changing unit 15 can change the resolution of the whole or a part of the display area in accordance with a scroll instruction signal from the scroll device 16. The communication means 17 can connect to the Internet or the like.

FIG. 2 is an explanatory view showing a first embodiment of the present invention. 2, the scroll control device 1 can be in accordance Viewing device reading order of the document image OG displayed (shown as a terminal 4), it displays a portion of a region of the document image.

  The scroll control device 1 analyzes the document and specifies the reading order. The reading order is from top to bottom in the case of horizontal writing, and from right to left in the case of vertical writing, the identification is easy in these cases. In addition, when the document is constituted by a plurality of columns as a result of the document analysis, the reading order employed in the normal plurality of steps stored in advance in the memory is adopted.

  2A, 2B, 2C, and 2D, FIG. 2A is an original image (document image 11), and the document includes a character area and a graphic area. The character area includes a title and a text, and the scroll control device 1 analyzes the columns based on the font size and font and specifies the reading order. That is, the scroll control device 1 divides the document image 11 as a display target into a character area, a photograph area, a figure area, a table area, and the like by area identification processing. Further, reading order is given to these character area, photo area, figure area, and table area. For example, in the case of a horizontally written double-column magazine, the order is the title, left character area, and right character area.

  The display device (4) is provided with a mouse or arrow key scroll device (arrow key in FIG. 2), and the user can scroll the display image to an area to be displayed by the scroll device. As shown in FIG. 2B, when the title is displayed first, if a next display instruction (for example, operation of the right arrow key or operation of the down arrow key) is performed, FIG. As shown in FIG. 2, the display shifts from the title area to the left character area, and the display shifts to the right character area as shown in FIG. In FIGS. 2B to 2D, enlargement processing is not performed, and display at the same magnification is performed. If the document is an image like a word processor, for example, the document may be re-edited (such as reducing the number of characters per line), and the above display may be performed based on the processed document.

  Of course, if the user gives an instruction to display the previous area, the display area is scrolled backward, and for example, a predetermined command is preset to a key (for example, the up arrow key or the down arrow key). In this case, it is possible to jump to the first character region or the last character region.

  Further, in a structured application such as an electronic document of a word processor (software), if the data indicating the type of image (attribute information indicating the area) is provided in the form of a tag or the like, the area identification process becomes easy. In addition, when the reading order information is provided as a tag, it is not necessary to perform the area identification process.

  Thereby, a part of the document image is enlarged and displayed in a limited space, the visibility of the user becomes extremely high, and the contents of small characters in the character area can be easily understood. Furthermore, scrolling to the next area can be performed by an instruction from a scroll control device such as a mouse.

  3 (A), (B), (C), (D), and (E) are explanatory views showing a second embodiment of the present invention. FIG. 3A shows an original image, and the scroll control device can display an enlarged image on the display device (4). When the right arrow key is operated in the enlarged state, the image shifts from the state of FIG. 3B to the state of FIGS. 3C and 3D, and the end of the line is displayed as shown in FIG. Then, the screen is switched to the display including the beginning of the line by the next operation of the right arrow key.

  4 (A), (B), (C), and (D) are explanatory views showing a third embodiment of the present invention. In the first and second embodiments, zigzag display is simply performed at the same magnification, but once the entire document is displayed (reduced display), it returns from the end of the line to the beginning of the line. That is, for example, when the right arrow key is operated while the end of the line is displayed as shown in FIG. 4A, the display image is reduced as shown in FIG. 4B, and the right arrow key is further pressed. When operated, the display image is further reduced as shown in FIG. Thereafter, when the right arrow key is operated, an area for displaying the head of the line is enlarged as shown in FIG.

  5A and 5B are explanatory views showing a fourth embodiment of the present invention. In the first to third embodiments, all the areas are displayed with the same resolution as the normal display in the display screen, but in the fourth embodiment, only the central portion is enlarged and the center in the display screen is displayed. In an area other than the area, a display smaller than the center is performed. That is, in FIG. 5A, the central portion is displayed in an enlarged manner, but the upper and lower areas are displayed in a reduced size, and in FIG. 5B, the central portion is displayed in an enlarged manner. The left and right areas are displayed in a reduced size. The reduced area may be reduced stepwise (one step, two steps, etc.) with respect to the enlarged region, or may be continuously reduced.

It is a block diagram which shows embodiment of this invention. It is explanatory drawing which shows 1st Embodiment of this invention. It is explanatory drawing which shows 2nd Embodiment of this invention. It is explanatory drawing which shows 3rd Embodiment of this invention. It is explanatory drawing which shows 4th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Scroll control apparatus 11 Control main-body part 12 Reading order determination means 13 Display instruction | indication means 14 Movement amount change means 15 Resolution change means 16 Scroll apparatus 17 Communication means

Claims (1)

A resolution changing means for enlarging and reducing an image displayed on the display device and a scroll device for two-dimensionally scrolling the image displayed on the display device, and scroll-controlling the document image displayed on the display device. In the scroll control device,
Reading order determining means for analyzing the document image displayed on the display device and determining the reading order of the document image;
Display instruction means for scroll- displaying a part of the document image in accordance with the reading order determined by the reading order determining means in accordance with a unified scroll operation ,
When displaying a document image larger than the screen size of the display device by the resolution changing means, the document image is read according to the reading order determined by the reading order determining means, displayed according to the display instruction means, and the end of the line is displayed on the screen. When the next character is instructed to be displayed, the resolution changing means temporarily displays the entire document in a reduced size, then switches to the previous resolution and displays the document image from the beginning of the next line. A scroll control device comprising a jump function for jumping a display.

Images