JPH1185451A - Portable information terminal unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to show whether the effective information exist in the areas other than a currently displayed area by discriminating an effective area having the effective information, scrolling to have only the effective display areas and showing the positional relation between the display and effective areas. SOLUTION: When the stored information is shown at a display part 5, a control part 1 sets a large threshold in a reception mode of the facsimile communication and otherwise sets the small threshold. Then, the part 1 calls the stored information out of a storage part 3 to show it at the part 5, displays small vertical and horizontal scroll icons and detects the presence or absence of a scroll instruction. If only an effective area is included in a large scrolled display area when a large scroll is instructed, the normal large scroll processing is carried out. If the areas other than the effective area are included in the display area, the scroll value is reduced by an amount equal to the number of included effective areas. In addition, a small scroll icon showing the opposite direction is displayed if an effective area exists in the scrolling direction. If no effective area exists in the scrolling direction, the display is discontinued.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable information terminal device having a display capable of displaying received or created information on a screen. In particular, the present invention relates to a portable information terminal device improved to facilitate a scroll operation.

[0002]

2. Description of the Related Art Among conventional portable information terminals, there are known portable information terminals capable of displaying received image information and documents created by the terminal itself on a display.

In this type of portable information terminal device, the size of the display is limited due to the convenience of carrying, and the portable information terminal device is equipped with a display smaller than that of an ordinary information terminal. Therefore, when the user checks the content of the information on the display, the size of the information displayed on the display is also limited. For this reason, if all of the information is displayed on the display, characters and graphics are crushed and become difficult to read, so that the information is partially enlarged and displayed. Then, a function is provided for scrolling the display screen vertically or horizontally so that the user can check all the information. For traditional scrolling,
This will be described with reference to FIG. 5 showing a screen layout for displaying information. A part of the storage information stored in the storage unit 3 is used as a display area, and information in the display area is displayed on the information display unit 6. In order to scroll the display area displayed on the information display unit 6 upward, the display area can be scrolled upward by a predetermined amount by instructing the upper scroll icon 7 with an input device such as a pen input device. it can. Similarly, in order to perform a downward scroll, the user can instruct the lower scroll icon 10 to scroll a predetermined amount downward. In the left-right direction, it is possible to scroll in the left-right direction by instructing the left scroll icon 11 and the right scroll icon 14.

On the other hand, the large scroll icons 8 and 12 are
The position icons 9 and 13 are used to indicate where the display area displayed on the display screen is located in the vertical and horizontal directions of the entire storage information. , Are displayed in the large scroll icons 8 and 12. For example, when the vertical position icon 9 is located at the uppermost position of the upper large scroll icon 8, the displayed information indicates that the uppermost portion of the entire stored information is displayed. Become. If the user designates the position below the vertical position icon 9 in the large vertical scroll icon 8, the size of the display area in the downward direction, that is, 1
It is possible to scroll only by the amount of the page display, and if an upper position is indicated, it is possible to scroll upward by the size of the display area. Left and right large scroll icon 1
2. Similarly, the horizontal position icon 13 can be scrolled in the horizontal direction by the size of the display area.

[0005]

However, since image information received by facsimile communication or a document created by the terminal has a blank portion that does not include information, scroll the screen to check the content of the information. In some cases, the screen scrolls to a blank area without knowing in advance how much effective information is available. Also,
If text is written in the upper part of the received image information and the middle part is blank and the character is written again in the lower part, if you scroll from the upper part while the upper part is displayed on the display, the middle part will be blank For this reason, when the middle row is displayed on the display, it is not known whether or not there is valid information in the lower row, and the valid information ends in the upper row, and the middle and subsequent rows may be determined to be margins.

The present invention has been made to solve such a problem, and it is possible to display whether or not valid information exists in an area other than the area currently being displayed. In addition, the display after scrolling allows only valid information to be displayed without displaying a blank.

[0007]

SUMMARY OF THE INVENTION The present invention comprises means for identifying an effective area having valid information, scroll means for scrolling so that the display area after scrolling is only the effective area, a display area and an effective area. And a display unit for displaying the positional relationship of

[0008] Also, a display means for displaying storage information stored in the memory, a scroll means for scrolling a display area displayed on the display means, and a means for identifying an effective area having valid information from the storage information. And the display means displays a positional relationship between a display area and the effective area.

A display unit for displaying storage information stored in the memory; a scroll unit for scrolling a display area displayed on the display unit; and a unit for identifying an effective area having valid information from the storage information. Wherein the scroll means scrolls so that the display after scrolling is limited to the effective area only.

Display means for displaying stored information stored in the memory; scroll means for scrolling a display area displayed on the display means; and means for identifying an effective area having valid information from the stored information. Wherein the scroll means prohibits scrolling in the scroll direction when no effective area exists in the scroll direction.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on examples. FIG. 1 is a block diagram showing an outline of the present invention, and FIG. 2 is a diagram showing an example of a display screen when a scroll process of the present invention is performed. FIG. 3 is a flowchart showing the scroll processing of the present invention. In the storage unit 3, image information received by facsimile communication, a document created by a portable information terminal, and the like are stored as character information. When displaying the storage information stored in the storage unit 3 on the display unit 5, the control unit 1 determines whether the storage information is information received by facsimile communication (see step 101. Is displayed.), And when it is determined that the information is received by facsimile communication, a large value is set as the threshold (S102), otherwise, a small value is set as the threshold (S103). This threshold is a value for determining whether the received information is information to be displayed.

The information received by facsimile communication is captured as binary information indicating whether or not a black dot exists, and includes unnecessary dot information due to contamination of a transmission original or a reading error when reading the original at the time of facsimile transmission. There are cases. In order to remove this unnecessary information, when the collection of black dot information is small, it can be removed from the information as noise instead of effective information. The number of groups of the black dot information is determined by a preset threshold value. That is, in the case of information received by facsimile communication, a large value is set as the threshold.

Next, the control unit 1 sets an area containing effective information in the display information as an effective area (S
104). Here, the setting of the effective area will be described. FIG. 4 shows the relationship between the storage information 15, the effective area 16 indicated by oblique lines, and the display area 17 indicated by vertical stripes. Storage information 15
Is image information or the like received by facsimile communication stored in the storage unit 3, the effective area 16 indicates an area including effective information of the stored information, and the display area 17 indicates the display memory 4.
The area displayed on the display unit 5 is shown in FIG. Therefore, the display area 17 is located at the position specified in the storage information by the user's scroll instruction.

The control unit 1 sets a horizontal decision line 19 with respect to the stored information represented in two dimensions, and captures each coordinate point on this line as a binary value of white or black to determine the decision line. It is determined whether there is a coordinate point having a black value on 19. If there is no coordinate point having a black value, it is determined that there is no valid information at the coordinate point of the next line. This determination is sequentially performed, and the determination line when the coordinate point having the black value first appears is determined. The upper region line 20 of the effective region is used, and the determination line when a coordinate point having a black value finally appears is the lower region line 21. Similarly, a left region line 22 and a right region line 23 are determined by the vertical determination line 18. An area surrounded by upper, lower, left, and right side area lines is an effective area 16 including effective information.
It is said. Since the judgment line is scanned over the entire stored information, a plurality of effective areas are generated. When the stored information is horizontal character information, each line is determined to be an effective area, a blank space between lines is not an effective area, and an effective area is set for each line. In order to prevent the effective area from being set for each line in this way and to collectively set the sentences as one effective area, for example, the length of the effective area set for each line in the vertical direction and the effective area Is compared with the distance to the next effective area, and if the length of the effective area in the vertical direction is longer, a process of including a blank portion to the next effective area in the effective area is performed.

Next, the control unit 1 calls the stored information from the storage unit 3 into the display memory 4 and displays it on the display unit 5 (S10).
5), up, down, left and right small scroll icons 7, 10, 1
1 and 14 are displayed (S106). Then, the presence or absence of a scroll instruction is detected by the scroll instruction unit 2 (S1).
07).

Next, if the detected scroll instruction is a small scroll instruction, small scroll processing is performed (S11).
1). If the detected scroll instruction is a large scroll instruction, it is determined whether or not only the effective area is included in the display area when the large scroll is performed (S108). Then, when only the effective area is included, the normal large scroll processing is performed (S110), and when the area other than the effective area is included, the scroll amount is reduced to scroll by an amount including only the effective area (S110). S109). For example, when a large scroll is performed in the downward direction, if only one line of effective area remains below the currently displayed information, even if a large scroll instruction is issued, only one line of scroll is performed. You can suppress the display of subsequent blank lines. Then, it is determined whether there is an effective area in the scroll direction (S112). If there is an effective area in the scroll direction, a small scroll icon indicating the opposite direction to the scroll direction is displayed (S114). If there is no effective area in the scroll direction, the display of the small scroll icon indicating the same direction as the scroll direction is stopped (S
113). This indicates to the user that there is no valid information in the scroll direction.

Next, it is determined whether or not an end instruction has been issued (S115).
The subsequent processing is repeated, and when the end instruction is detected, the processing ends (S116).

FIG. 2 shows an example of a screen displayed on the display unit 5 when the display area 17 is scrolled to the lower right of the effective area 16 in the storage information 15 shown in FIG. Since the state where the display of the lower small scroll icon 10 and the right small scroll icon 14 is stopped is shown, the user knows that there is no valid information on the right and lower sides of this display screen. As described above, according to the present invention, a means for identifying an effective area from among stored information is provided, and the positional relationship between the storage area, the display area, and the effective area is displayed on the display means. Therefore, it is possible to easily grasp the position of the display area in the effective area, and it is possible to eliminate unnecessary work of scrolling to a storage area other than the effective area.

Further, even when there is a blank area between the effective areas, the existence of the effective area is displayed, so that even if the area is scrolled to a position other than the effective area, it is found that the effective area still exists. Never miss valid information. further. When the area displayed after scrolling includes an area different from the effective area, scrolling is performed to the effective area, so that the screen can be effectively utilized. Furthermore, since the display after scrolling is made to be only the effective area, if there are a plurality of effective areas and there is a blank part between them, that part is skipped and displayed, so that there is no unnecessary scroll operation You can see the screen efficiently.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an outline of the present invention.

FIG. 2 is a diagram showing a display screen of the present invention.

FIG. 3 is a flowchart showing scroll processing according to the present invention;

FIG. 4 is a diagram showing display information, an effective area, and a display area in two dimensions.

FIG. 5 is a diagram showing a display screen according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Control part 2 Scroll instruction part 3 Storage part 4 Display memory 5 Display part

Claims (4)

[Claims] 1. A means for identifying an effective area having effective information, a scroll means for scrolling so that the display area after scrolling is only the effective area, and a display means for displaying a positional relationship between the display area and the effective area. A portable information terminal device comprising: 2. Display means for displaying storage information stored in a memory; scroll means for scrolling a display area displayed on the display means; and means for identifying an effective area having valid information from the storage information. Wherein the display means displays a positional relationship between a display area and the effective area. 3. Display means for displaying storage information stored in a memory, scroll means for scrolling a display area displayed on said display means, and means for identifying an effective area having valid information from said storage information. Wherein the scroll means scrolls so that the display after scrolling is limited to the effective area only. 4. Display means for displaying storage information stored in a memory, scroll means for scrolling a display area displayed on said display means, and means for identifying an effective area having valid information from said storage information. Wherein the scroll means prohibits scrolling in the scroll direction when there is no effective area in the scroll direction.