JP2014206646A - Communication terminal device, image display method, and image display program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure for reducing processing amount of a CPU and use amount of a RAM at the time of page transition in a communication terminal device which displays electric data.SOLUTION: A display unit of a smartphone displays a data display image that is an image in which data is input in a data display area of a base image. The smartphone displays the data display image on the display unit and simultaneously retains at least any one of the base image and the data display image in a RAM in the background. When an acceptance unit accepts an instruction for transferring the data display image, the smartphone transfers the data display image being displayed on the display unit to the background to retain the image in the RAM and also displays the base image retained on the background or the data display image created by inputting data in the data display area of the data display image, on the display unit.

Description

  The present invention mainly relates to a communication terminal device that displays a data display image on a display unit.

  2. Description of the Related Art Conventionally, electronic data (phone books, documents, books, etc.) is browsed using a communication terminal device such as a smartphone or a PC (personal computer). When viewing electronic data, a method of displaying new information by displaying the electronic data page by page and transitioning to the next page, and displaying new information by scrolling and displaying the electronic data continuously There exists a method.

  However, when displaying electronic data for each page, it may take time until the next page is displayed due to the influence of arithmetic processing or the like. Further, even when electronic data is continuously displayed, it may take a similar amount of time until the content is displayed after scrolling. Patent Documents 1 and 2 disclose techniques for solving this problem.

  Patent Document 1 discloses an electronic book device that displays electronic data (electronic book) for each page. In this electronic book apparatus, a browsing method similar to that of an actual book in which a page is quickly turned to find a desired part can be used. Further, in this electronic book device, in order to suppress the processing amount of the CPU (Central Processing Unit) and the usage amount of the RAM (Random Access Memory) as the main storage device, a part of each page (for example, Only about one-fourth from the right end).

  Patent Document 2 discloses a processing method that performs high-speed scrolling while displaying information in a terminal that continuously displays electronic data. In this processing method, information is displayed in monochrome during scrolling, and coloring is performed later. Thereby, since monochrome data has a small amount of data, it is possible to realize high-speed scrolling by reducing the amount of computation of the CPU, and to reduce the amount of RAM used.

JP 2012-88801 A Japanese Patent No. 3374449

  However, when only a part of electronic data is displayed as in Patent Document 1, the amount of RAM used increases as the number of page transitions increases. Further, as in Patent Document 2, even when processing for displaying electronic data in monochrome is performed, if the scroll amount increases, the amount of RAM used increases. Accordingly, it is necessary to separately perform processing for releasing the storage area of the RAM.

  Further, partial display of the electronic data page may reduce the components of the electronic data, which may give the user a sense of discomfort. Moreover, this display method is not suitable for a browsing mode in which pages are changed while checking electronic data page by page.

  Therefore, in the case of a browsing mode in which electronic data is checked page by page, in order to realize smooth page transition, it is necessary to create images for a plurality of pages in advance and store them in the RAM. However, in this case, the amount of RAM used increases and the processing amount of the CPU also increases. Further, since not only the image before display but also the image after display is normally stored in the RAM, the amount of RAM used increases, and a process for releasing the storage area of the RAM is required.

  The present invention has been made in view of the above circumstances, and its main object is to provide a configuration that suppresses the amount of CPU processing and the amount of RAM used at the time of page transition in a communication terminal device that displays electronic data. There is.

Means and effects for solving the problems

  The problems to be solved by the present invention are as described above. Next, means for solving the problems and the effects thereof will be described.

  According to the 1st viewpoint of this invention, the communication terminal device of the following structures is provided. That is, the communication terminal device includes a display unit, a storage unit, a reception unit, and a control unit. The display unit displays a data display image that is an image in which data is input in the data display area of the base image. The storage unit retains at least one of the base image and the data display image in the background in addition to the data display image displayed on the display unit. The reception unit receives an instruction to transition the data display image to another data display image. The control unit displays the data display image on the display unit and holds at least one of the base image and the data display image in the storage unit in the background. In addition, when the receiving unit receives an instruction to change the data display image, the control unit shifts the data display image being displayed on the display unit to the background and holds the data display image in the storage unit. The data display image created by inputting data into the data display area of the base image or the data display image held in the background is displayed on the display unit.

  Thereby, since the data in the data display area is rewritten to create a new data display image, an increase in the usage amount of the storage unit can be suppressed. Therefore, it is possible to omit the process of releasing the storage area of the storage unit. In addition, the processing amount of the control unit can be reduced as compared with a configuration in which an image is newly created for each page transition.

  In the communication terminal device, the storage unit preferably holds one of the base image and the data display image in the background in addition to the data display image displayed on the display unit. .

  Thereby, since it is only necessary to store a total of two images in the storage unit, the amount of use of the storage unit can be further suppressed.

  In the communication terminal device, the control unit receives the data described in the data display area of the data display image being displayed on the display unit when the reception unit receives a transition of the data display image. It is preferable that the data display image is transferred to the background and retained in the storage unit in the state where it is left.

  Thereby, the process of deleting data in the data display area at the time of shifting to the background can be omitted. Further, when the transition of the data display image is accepted again, there is no particular problem because it is only necessary to overwrite the data described in the data display area.

  In the communication terminal device, the data described in the data display area of the data display image is preferably text data.

  As a result, only text data with a small amount of data can be rewritten, and other portions with a large amount of data such as icons and background images can be reused, so that the processing amount of the control unit can be reduced.

  According to a second aspect of the present invention, an image display method for displaying a data display image, which is an image in which data is input in a data display area of a base image, on a display unit of a communication terminal device includes the following steps: Is provided. That is, the image display method includes a step of displaying the data display image on the display unit and holding at least one of the base image and the data display image in the storage unit of the communication terminal device in the background. Including. Further, in the image display method, when an instruction to change the data display image to another data display image is received, the data display image being displayed on the display unit is transferred to the background, and the storage unit And displaying the data display image created by inputting data in the data display area of the base image or the data display image held in the background on the display unit.

  Thereby, since the data in the data display area is rewritten to create a new data display image, an increase in the usage amount of the storage unit can be suppressed. Therefore, it is possible to omit the process of releasing the storage area of the storage unit. In addition, the processing amount of the control unit can be reduced as compared with a configuration in which an image is newly created for each page transition.

  According to a third aspect of the present invention, in an image display program for displaying a data display image, which is an image in which data is input in a data display area of a base image, on a display unit of a communication terminal device, a program including the following procedure: Is provided. That is, the image display program displays the data display image on the display unit and holds at least one of the base image and the data display image in the storage unit of the communication terminal device in the background. Including. Further, in the image display method, when an instruction to change the data display image to another data display image is received, the data display image being displayed on the display unit is transferred to the background, and the storage unit And displaying the data display image created by inputting data in the data display area of the base image or the data display image held in the background on the display unit.

  Thereby, since the data in the data display area is rewritten to create a new data display image, an increase in the usage amount of the storage unit can be suppressed. Therefore, it is possible to omit the process of releasing the storage area of the storage unit. In addition, the processing amount of the control unit can be reduced as compared with a configuration in which an image is newly created for each page transition.

The block diagram which shows the structure of the smart phone which concerns on one Embodiment of this invention. The flowchart which shows the process which switches the display of a contact display image (data display image). The figure explaining a contact display image (data display image) and a base image. The figure which shows notionally the first half of the process when changing a contact display image (data display image). The figure which shows notionally the latter half part of the process when changing a contact display image (data display image). The figure which shows notionally the process when changing a contact display image in a prior art example.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram illustrating a configuration of a smartphone.

  The present embodiment relates to a processing method when displaying a data display image such as a contact address on a communication terminal device such as a smartphone 10. As shown in FIG. 1, the smartphone (communication terminal device) 10 includes a CPU (control unit) 11, a RAM (storage unit) 12, a storage 13, and a touch panel 14.

  The CPU 11 performs various calculations for operating the smartphone 10. The CPU 11 executes, for example, control for communicating with an external device, control for displaying information stored therein, control for changing information to be displayed in accordance with a user instruction, and the like.

  A RAM (storage unit) 12 is a device that the CPU 11 can directly access. The RAM 12 stores a program being executed by the CPU 11 and an image being displayed. In the present embodiment, a part of the RAM 12 serving as the main storage device is used as a drawing memory. However, in addition to the RAM 12, a drawing-dedicated memory (VRAM) may be provided. In the latter case, the combined configuration of the RAM 12 and the VRAM corresponds to the “storage unit” of the present application.

  The storage 13 stores contact data, image data such as various icons, sound data such as a ring tone, and the like. As the storage 13, for example, a flash memory such as a NAND flash memory or an SD card can be used.

  The touch panel 14 includes a display unit 21 and a reception unit 22.

  The display unit 21 includes a liquid crystal display or the like, and can display an image created based on, for example, a contact stored in the storage 13.

  The receiving unit 22 detects a touch operation on the display unit 21 by the user. In this embodiment, a projection-type capacitance method is adopted as a method for detecting a touch operation. In this method, a plurality of highly transmissive electrodes are arranged on a display panel, and a touch position is detected based on a change in capacitance when a fingertip approaches the display panel. For example, the reception unit 22 can detect a flick operation in which a fingertip is slid while the fingertip is in contact with the display unit 21.

  Next, a process for creating an image showing the details of a contact and a process for transitioning a page when the flick operation is received while the image is displayed will be described with reference to FIGS.

  The user can display a list of registered contacts by performing a predetermined touch operation on the touch panel 14. Further, by selecting a predetermined person from the contact list, an image (contact image) showing details of the contact information of this person can be displayed.

  Here, FIG. 3A shows an example of a contact image. In this contact address image, item names, icons, and specific values (numbers or character strings) are described for each item of name, telephone number, facsimile number, e-mail address, and company name. Hereinafter, an area where the specific value is displayed is referred to as a “data display area”. An image obtained by removing the specific value from the contact image is referred to as a base image (see FIG. 3B).

  When receiving an instruction from the user to display the contact image, the CPU 11 first creates two base images (S101). Next, the CPU 11 acquires contact information of the person selected by the user from one of the two base images from the storage 13 and inputs it to the data display area (S102).

  Note that the remaining one base image is not processed and is held in the background. Here, in this application, “hold in the background” means that an image not being displayed is continuously stored in the RAM 12.

  Next, the CPU 11 sets a contact image created by inputting contact information as a display image (image to be displayed on the display unit 21) (S103), and performs control to display on the display unit 21 (S104). ).

  FIG. 4A shows a state immediately after the process of step S104 is completed. That is, a predetermined value is input to the data display area for the image 1 being displayed, and no value is input to the data display area for the image 2 held in the background.

  Next, the CPU 11 waits until the user performs a flick operation and the reception unit 22 receives the flick operation (S105). When the accepting unit 22 accepts the flick operation, the CPU 11 acquires information on the next contact address according to the accepted flick direction (S106). The CPU 11 inputs the acquired contact information into the data display area of the base image held in the background (S107).

  FIG. 4B shows a state immediately after the processing of step S107 is finished. That is, a predetermined value is input to the data display area of the image 2 held in the background.

  Next, the CPU 11 cancels the setting of the currently displayed contact image as a display image and holds it in the background (S108). At this time, it is not necessary to delete the value input in the data processing area, and this contact image is held in the background as it is.

  In addition to the above processing, the CPU 11 sets a contact image held in the background as a display image (S108). Then, the CPU 11 displays the set contact image on the display unit 21 (S104). As a result, the contact image of the next person is displayed.

  FIG. 4C shows a state immediately after step S104 is executed again. That is, the contact image of the next person is displayed on the display unit 21, and the contact image displayed before is held in the background.

  Thereafter, the CPU 11 waits again until the user performs a flick operation and the reception unit 22 receives the flick operation (S105). And when the reception part 22 receives a flick operation, the process of step S106 to step S108 is performed again.

  Since the base image is held in the background in the first process, the process of inputting a value in the blank data processing area is executed in step S107. However, in the second and subsequent processes as in this case, A value has already been entered in the data processing area. Accordingly, in the second and subsequent processes, the CPU 11 overwrites the value of the data processing area in step S107.

  FIG. 5 shows a specific example of the second and subsequent processes. FIG. 5A shows a state in which a contact image of a new person is displayed by the previous flick operation. FIG. 5B shows a state after the value of the data processing area of the contact image held in the background is overwritten by accepting the second and subsequent flick operations. FIG. 5C shows a state after the contact image created in FIG. 5B is displayed on the display unit 21.

  Next, the process of this embodiment is compared with the conventional process. FIG. 6 is a diagram conceptually showing processing when a contact display image is changed in the conventional example.

  Conventionally, a contact image is created from the beginning instead of creating a contact image by inputting (overwriting) a value in the data display area. That is, every time a contact image is created, it is necessary to read and arrange item names and icons. For this reason, the processing amount of the CPU has increased.

  Also, in order to realize smooth page transition, it is necessary to create a plurality of contact images in advance as shown in FIG. In this case, however, the amount of RAM used increases. Further, since the contact image after the display is continuously stored in the RAM, a process for releasing the storage area of the RAM is separately required.

  On the other hand, in the present embodiment, a contact image created once is reused (a value is overwritten in the data display area) to create a contact image. It becomes unnecessary, and the processing amount of the CPU can be reduced. In particular, in this embodiment, text data with a small capacity is input to the data display area, and icons with a large capacity can be reused, so that the processing amount of the CPU can be further reduced.

  Further, by reducing the processing amount of the CPU, it becomes unnecessary to previously hold a plurality of contact images in the background, and the amount of RAM used can be reduced. Further, by reusing the contact address image, the processing for releasing the storage area of the RAM becomes unnecessary, so that the processing can be simplified.

  As described above, the smartphone 10 according to the present embodiment includes the display unit 21, the RAM 12, the reception unit 22, and the CPU 11. The display unit 21 displays a data display image (contact image) that is an image in which data is input in the data display area of the base image. The RAM 12 holds at least one of a base image and a data display image in the background in addition to the data display image displayed on the display unit 21. The accepting unit 22 accepts an instruction to transition the data display image to another data display image. The CPU 11 displays a data display image on the display unit 21 and holds at least one of the base image and the data display image in the RAM 12 in the background. In addition, when the receiving unit 22 receives an instruction to change the data display image, the CPU 11 shifts the data display image being displayed on the display unit 21 to the background and holds the data display image in the RAM 12 and is held in the background. A data display image created by inputting data into the data display area of the base image or data display image that has been displayed is displayed on the display unit 21.

  Thereby, since the data in the data display area is rewritten to create a new data display image (contact address image), an increase in the usage amount of the RAM 12 can be suppressed. Therefore, the process for releasing the storage area of the RAM 12 can be omitted. Further, the processing amount of the CPU 11 can be reduced as compared with a configuration in which an image is newly created for each page transition.

  In addition, in the smartphone 10 according to the present embodiment, the RAM 12 holds one of the base image and the data display image in the background in addition to the data display image displayed on the display unit 21.

  As a result, since only a total of two images need be stored in the RAM 12, the amount of use of the RAM 12 can be further reduced.

  In the smartphone 10 of the present embodiment, the CPU 11 leaves the data described in the data display area of the data display image being displayed on the display unit 21 when the reception unit 22 receives the transition of the data display image. In this state, the data display image is transferred to the background and held in the RAM 12.

  Thereby, the process of deleting data in the data display area at the time of shifting to the background can be omitted. Further, when the transition of the data display image is accepted again, there is no particular problem because it is only necessary to overwrite the data described in the data display area.

  Moreover, in the smart phone 10 of this embodiment, the data described in the data display area of the data display image is text data.

  As a result, only text data with a small amount of data can be rewritten, and other portions with a large amount of data such as icons and background images can be reused, so that the processing amount of the CPU 11 can be reduced.

  The preferred embodiment of the present invention has been described above, but the above configuration can be modified as follows, for example.

  Although the method of applying the present invention to a smartphone has been described above, the present invention can also be applied to other communication terminal devices (tablet devices or PCs).

  The reception unit may be configured to receive a user instruction other than an operation on the touch panel. For example, in the case of a smartphone or a tablet device, instructions using hardware keys such as direction keys, and in the case of a PC, an instruction using a keyboard, mouse, trackball, or the like can be given.

  The display method of the contact address image is arbitrary and can be changed as appropriate. For example, items other than those described above may be displayed, and the icon display may be omitted. Further, when two or more contact images are displayed on one screen and a flick operation or the like is received, the contact images for two or more contacts may be rewritten together.

  In the above description, the contact image is an image displayed on the entire screen, but the image displayed on a part of the screen may be rewritten. For example, a display method in which a list of persons is displayed on the left side of the screen and detailed contact information of the person is displayed on the right side of the screen corresponds to this. In this display method, a detailed contact image on the right side is rewritten by accepting a touch operation for selecting a predetermined person from the list of persons on the left side.

  The reception unit 22 may be configured to receive a touch operation other than the flick operation. Further, the method for detecting the touch operation is not limited to the projection-type capacitance method, and an appropriate method can be used. Moreover, the structure which detects the touch operation by a rod-shaped member, for example besides the touch operation by a user's finger | toe may be sufficient.

  In the above, one image is held in the background, but two or more images may be held in the background.

  The flowchart shown above is an example of processing for realizing the present invention, and processing may be added, deleted, or changed, or a plurality of processing may be performed in parallel. For example, overwriting of the data display area may be performed in advance, not after receiving the flick operation as described above.

  In the above, the present invention is used to display contact information, but it can also be used to display other information. For example, it can be used to display the position, business hours, handling items, etc. for each store, or can be used to display the price, inventory status, sales, etc. for each product.

10 Smartphone (communication terminal device)
11 CPU (control unit)
12 RAM (storage unit)
13 Storage 14 Touch Panel 21 Display Unit 22 Reception Unit

Claims (6)

A display unit that displays a data display image that is an image in which data is input in the data display area of the base image;
In addition to the data display image displayed on the display unit, a storage unit that holds at least one of the base image and the data display image in the background;
A receiving unit that receives an instruction to transition the data display image to another data display image;
A control unit;
With
The controller is
A control for displaying the data display image on the display unit and holding at least one of the base image and the data display image in the storage unit in the background;
When the receiving unit receives an instruction to change the data display image, the data display image being displayed on the display unit is transferred to the background and held in the storage unit, and is also held in the background. Control for displaying the data display image created by inputting data in the data display area of the base image or the data display image on the display unit;
The communication terminal device characterized by performing. The communication terminal device according to claim 1,
The storage unit holds one of the base image and the data display image in the background in addition to the data display image displayed on the display unit. The communication terminal device according to claim 1 or 2,
When the receiving unit receives the transition of the data display image, the control unit displays the data display in a state where the data described in the data display area of the data display image being displayed is left on the display unit. A communication terminal apparatus, wherein an image is transferred to a background and held in the storage unit. The communication terminal device according to any one of claims 1 to 3,
The communication terminal apparatus, wherein data described in a data display area of the data display image is text data. In an image display method for displaying a data display image, which is an image in which data is input to a data display area of a base image, on a display unit of a communication terminal device,
Displaying the data display image on the display unit, and holding at least one of the base image and the data display image in the storage unit of the communication terminal device in the background;
When an instruction to transition the data display image to another data display image is received, the data display image being displayed on the display unit is transferred to the background and held in the storage unit. Displaying the data display image created by inputting data in the data display area of the base image or the data display image held on the display unit;
An image display method comprising: In an image display program for causing a computer to execute a process of displaying a data display image, which is an image in which data is input to a data display area of a base image, on a display unit of a communication terminal device,
Displaying the data display image on the display unit, and holding at least one of the base image and the data display image in the storage unit of the communication terminal device in the background;
When an instruction to transition the data display image to another data display image is received, the data display image being displayed on the display unit is transferred to the background and held in the storage unit. A procedure for displaying the data display image created by inputting data in the data display area of the base image or the data display image held on the display unit;
An image display program comprising:

Images