WO2011158682A1 - Display control device, display control program, and data transmission program - Google Patents

Abstract

Provided are a display control device, a display control program, and a data transmission program, wherein a user can easily confirm the progress of a file data download. A display terminal can perform data communication with a PC, and controls the display of an image on a display panel for image display. The display terminal receives, from the PC, file data including data of one or a plurality of pages to be displayed on the display panel, and stores the data in a memory card (S30). Whether or not the reception of the data of one page in the file data is complete is judged (S36). Every time it is judged that the reception of the data of one page is complete (S36:YES), the display terminal displays the one page of which data reception is complete, on the display panel, in accordance with the data stored in the memory card, while the file data is being received (S38, S39).

Description

Display control device, display control program, and data transmission program

The present disclosure relates to a display control device, a display control program, and a data transmission program capable of communicating file data for displaying an image on a display.

Conventionally, a technique for transmitting and receiving file data for displaying an image on a display between a plurality of devices is known. For example, a PC (personal computer) disclosed in Patent Document 1 creates file data in a format such as a data format that can be processed by the display control device of the communication partner from file data created by various applications. The PC transmits the created file data to the display control device. The display control device can display an image on the display based on the file data downloaded from the PC.

JP 2009-128670 A

In the conventional technology, the user confirms the image on the display whose display is controlled by the display control device unless the display control device downloads all of the file data including the data of one or a plurality of pages. I could not. Therefore, it is difficult for the user to check the progress of the download while downloading the file data.

This disclosure is intended to provide a display control device, a display control program, and a data transmission program that allow a user to check the progress of downloading file data.

A display control apparatus according to an aspect of the present disclosure includes a communication unit that performs data communication with an external device, receives data from the external device via the communication unit, and performs image processing according to the received data. A display control device for displaying an image on a display means for displaying file data including one or more page data to be displayed on the display means from an external device via the communication means and storing the data Receiving means for storing in the storage means, determining means for determining whether or not reception of data of one page of the file data has been completed by the receiving means, and determination of data of one page by the determining means Each time it is determined that the reception has been completed, the display unit displays the one page during the reception of the file data in accordance with the data stored in the storage unit. And a display control means for displaying.

The display control apparatus according to an aspect of the present disclosure includes a file data including one or a plurality of pages of data, and each time reception of one page of data is completed, the page for which data reception has been completed is included in the file data. Display on the display means during reception. Therefore, the user can check the progress of the reception of the file data, that is, the progress of the download during the data download by viewing the image displayed on the display means.

The display control device includes an instruction receiving unit that receives a process execution instruction for a page displayed on the display unit by the display control unit during reception of the file data, and an instruction to execute a process by the instruction reception unit. The processing unit may further include a processing unit that, when accepted, executes the process instructed by the execution instruction on the data of the page instructed to execute the process by the execution instruction. The user can cause the display control device to execute processing for each page while checking the progress of downloading the file data while downloading the file data. Therefore, the user can cause the display control device to execute processing for each page.

The instruction receiving means may be capable of receiving a first execution instruction that is an execution instruction of a process for providing a mark used for searching a page. The processing means may add a mark to a page instructed to execute the process when the first execution instruction is received by the instruction receiving means. In this case, the user can give a mark used for searching the page to the desired page while checking the progress of downloading the file data.

The instruction receiving means may be capable of receiving a second execution instruction that is an execution instruction for processing to delete a page. When the second execution instruction is received by the instruction receiving unit, the processing unit may delete the data of the page instructed to execute the process from the storage unit. In this case, the user can delete the desired page data while checking the progress of downloading the file data.

The processing unit may execute the process according to the execution instruction received by the instruction receiving unit during the reception of the one file data when the reception of the one file data by the receiving unit is completed. In this case, the display control apparatus does not need to execute the process instructed by the user while downloading the file data. Therefore, the display control device can smoothly download the file data while reducing the possibility that a problem such as processing delay occurs.

The display control apparatus may further include a selection receiving unit that receives a selection instruction as to whether or not to display a page for which data reception has been completed on the display unit during reception of file data. The display control means causes the display means to display the one page every time reception of data of one page is completed only when a selection instruction for displaying a page is accepted by the selection accepting means. Also good. In this case, if the user inputs a selection instruction to display a page for which data reception has been completed during reception of file data, the user can grasp the progress of data download. On the other hand, when the user does not need to grasp the progress of the download, the user can reduce the processing load on the display control device by inputting a selection instruction not to display the page. As a result, the file data download speed can be improved and the power consumption of the display control apparatus can be reduced.

The display control means may be capable of displaying a plurality of pages for which data reception has been completed on the display means in a thumbnail format. In this case, the user can check the progress of data download on a plurality of pages displayed in the thumbnail format.

A display control program according to an aspect of the present disclosure includes a communication unit that performs data communication with an external device, receives data from the external device via the communication unit, and performs image processing according to the received data. A display control program to be executed by a display control device for displaying an image on a display means for displaying a file data including one or more pages of data to be displayed on the display means on a computer from an external device. A receiving step for storing data in a storage means for storing data, a determining step for determining whether or not reception of data of one page of the file data is completed by the receiving step, and Each time the determination step determines that the reception of one page of data has been completed, the data stored in the storage means is stored. According, characterized in that to execute a display control step of displaying said one page while receiving the file data on the display means.

According to the display control program that is one aspect of the present disclosure, the display control device completes reception of data each time reception of data of one page among file data including data of one or more pages is completed. The displayed page is displayed on the display means while receiving the file data. Therefore, the user can check the progress of the reception of the file data, that is, the progress of the download during the data download by viewing the image displayed on the display means.

A data transmission program according to an aspect of the present disclosure is a data transmission program for transmitting file data for displaying an image on the display unit to a display control device for displaying an image on the display unit according to data received from an external device. A data transmission step of transmitting file data including data of one or a plurality of pages to be displayed on the display unit to the display unit via a communication unit that performs data communication; A display instruction step of transmitting an instruction to display the one page on the display means to the display control device every time transmission of data of one page of the file data is completed in the step. Features.

According to the data transmission program which is one aspect of the present disclosure, the display control apparatus completes reception of data each time reception of data of one page is completed among file data including data of one or more pages. The displayed page is displayed on the display means. Therefore, the user can easily confirm the progress of the reception of the file data, that is, the progress of the download while downloading the data by viewing the image displayed on the display means.

1 is a system configuration diagram of an image display system 100. FIG. 3 is a block diagram showing an electrical configuration of the display terminal 1. FIG. It is a block diagram which shows the electric constitution of PC3. It is a flowchart of the transmission process which PC3 disclosed in 1st embodiment performs. It is a figure which shows an example of a file data transmission / reception setting screen. It is a flowchart of the reception process which the display terminal 1 disclosed by 1st embodiment performs. It is a figure which shows one form of the display terminal 1 which is performing the display sequentially. It is a flowchart of the transmission process which PC3 disclosed in 2nd embodiment performs. It is a flowchart of the reception process which the display terminal 1 disclosed by 2nd embodiment performs.

Hereinafter, the display terminal 1 disclosed in the first embodiment of the present disclosure will be described with reference to the drawings. The referenced drawings are used to describe technical features that can be employed by the present disclosure. The configuration of the apparatus, the flowcharts of various processes, and the like described in the drawings are not intended to be limited to these, but are merely illustrative examples.

An overview of an image display system 100 provided with the display terminal 1 will be described with reference to FIG. The image display system 100 includes a display terminal 1 and a PC 3. The display terminal 1 is a lightweight and thin portable display terminal formed in a rectangular plate shape having a predetermined thickness in plan view. The display terminal 1 includes a display panel 26 having a rectangular shape in plan view on the upper surface thereof. On the display panel 26, various contents including text, charts and the like are displayed. In particular, the display panel 26 can display content including a plurality of pages. Therefore, the user can also use the display panel 26 for applications such as electronic books.

The display panel 26 is driven by an electrophoresis method. The electrophoretic display panel 26 displays an image by moving positively charged white electrophoretic particles and negatively charged black electrophoretic particles through the display liquid by electrophoresis. In the display terminal 1 of the present embodiment, image display is performed based on file data in a format suitable for display control by the electrophoresis method. In the following description, a format suitable for display control by an electrophoresis method is described as a terminal format. In addition to the electrophoretic display panel, a light and thin reflective liquid crystal may be applied to the display panel 26.

On the right side of the display panel 26, an operation unit 27 for a user to input various operation instructions is provided. Although not shown, a card slot into which the memory card 15 (see FIG. 2) is inserted, a USB port to which the USB cable 20 is attached and detached, and the like are provided on the side surface of the display terminal 1. For example, the display terminal 1 and the PC 3 can perform wired communication () such as communication via the USB cable 20 or wireless communication by wireless.

The PC 3 is installed with a driver program that controls communication with the display terminal 1 and an application program that creates, views, and edits various file data. The user operates the application using the LCD 46, the keyboard 47, and the mouse 48 connected to the PC 3. By the operation of this application, various contents such as documents, drawings and photographs are generated. The driver generates file data in a terminal format from file data in a general format such as PDF, JPEG, HTML, etc. generated by various applications. The driver transmits the generated file data to the display terminal 1. The display terminal 1 displays an image according to the file data received from the PC 3 and stored, that is, the downloaded file data. In the following description, receiving file data may be described as downloading. As a result of displaying an image according to the downloaded file data, the user can view various contents on the display terminal 1. The display terminal 1 disclosed in the present embodiment is characterized in that each time reception of data of one page is completed, the page for which reception of data has been completed is displayed on the display panel 26.

The electrical configuration of the display terminal 1 will be described with reference to FIG. The display terminal 1 includes a CPU 10 that controls the display terminal 1. Connected to the CPU 10 are a ROM 11, a RAM 12, an EEPROM 13, a memory card I / F 14, a display controller 16, a key controller 17, a USB I / F 18, and a wireless communication I / F 19.

The ROM 11 stores various programs such as a display control program for operating the display terminal 1 and initial values. The RAM 12 temporarily stores various information used in the control program. The EEPROM 13 is a non-volatile storage device that stores various types of information. The memory card I / F 14 is connected to the memory card 15 inserted in the card slot, and reads and writes data such as file data for displaying an image with respect to the memory card 15. The display controller 16 controls image display on the display panel 26. The key controller 17 receives an operation input to the operation unit 27. The USB I / F 18 transmits and receives data to and from an external device such as the PC 3 via the USB cable 20. The wireless communication I / F 19 performs wireless data transmission / reception with an external device.

The electrical configuration of the PC 3 will be described with reference to FIG. The PC 3 includes a CPU 30 that controls the PC 3. Connected to the CPU 30 are a ROM 31, a RAM 32, an HDD 33 (hard disk drive), a CD-ROM drive 34, a display controller 36, an operation controller 37, a USB I / F 38, and a wireless communication I / F 39.

The ROM 31 stores programs such as BIOS executed by the CPU 30, initial values, and the like. The RAM 32 temporarily stores various information. The HDD 33 is a non-volatile storage device, and stores a driver program that controls communication with the display terminal 1, an application program that creates various file data, and the like. The CD-ROM drive 34 reads data stored in the CD-ROM 35. The PC 3 may acquire the driver program by reading it from the CD-ROM 35 or may acquire it via a network such as the Internet. The display controller 36 controls image display on the LCD 46 connected to the PC 3. The operation controller 37 receives operations input to the keyboard 47 and the mouse 48. The USB I / F 38 and the wireless communication I / F 39 perform data transmission / reception with an external device such as the display terminal 1.

Hereinafter, processing executed by the image display system 100 disclosed in the first embodiment will be described in detail. First, a transmission process executed by the PC 3 will be described with reference to FIGS. 4 and 5. The transmission process is executed by the CPU 30 of the PC 3 according to the driver program stored in the HDD 33 when an instruction for starting the driver program is input by the keyboard 47 or the like. In the transmission process, file data in a terminal format is generated from file data including data of one or a plurality of pages, and transmitted to the display terminal 1.

As shown in FIG. 4, when the transmission process is started, an instruction to select transmission data by the user is accepted (S1). The user operates the keyboard 47 and mouse 48 to select file data to be transmitted to the display terminal 1. The CPU 30 determines the file data selected by the selection instruction as file data to be transmitted to the display terminal 1.

Next, an instruction to select whether or not to sequentially display each page on the display terminal 1 is accepted (S2). The sequential display means that the display terminal 1 displays a page for which transmission / reception is completed each time transmission / reception of data of each page is completed. As the display terminal 1 sequentially displays, the user can grasp the progress of downloading the file data. Furthermore, the user confirms how the image is displayed on the display panel 26 every time transmission / reception of data of each page is completed without waiting for the download of one file data to be completed. Can do.

The image display system 100 disclosed in the present embodiment can allow the user to select whether or not to cause the display terminal 1 to perform sequential display in the process of S2. Specifically, when changing the setting of whether to perform sequential display, the user operates the keyboard 47 and mouse 48 to input a setting change instruction. The CPU 30 displays the file data transmission / reception setting screen shown in FIG. The user selects whether or not to sequentially perform display depending on whether or not a check box of “display reception results as needed” is checked. When “Display reception result as needed” is checked, either “Full screen display” or “Thumbnail display” can be selected, and the user can select a desired display mode. The full screen display is a mode in which only the latest page for which data transmission / reception has been completed is displayed on the entire display panel 26. The thumbnail display is a mode in which an image of a page is additionally displayed on the display panel 26 in a thumbnail format every time transmission / reception of the page data is completed. According to the thumbnail display, a plurality of pages for which transmission / reception has been completed can be displayed on the display panel 26. The CPU 30 of the PC 3 stores the contents received in the process of S2 in the RAM 32 or the HDD 33.

Next, it is determined whether or not a transmission processing end instruction has been input (S3). When the user ends the transmission process halfway, the user operates the keyboard 47 or the like and inputs an end (cancel) instruction. If an end instruction has not been input (S3: NO), it is determined whether an instruction to start transmission of file data has been input (S4). If not input (S4: NO), S3 and S4 The judgment is repeated. When an instruction to end the transmission process is input (S3: YES), the process ends as it is.

When the keyboard 47 and the mouse 48 are operated and an instruction to start transmission of file data is input (S4: YES), wired or wireless communication is established with the display terminal 1 (S5). A command for selecting whether to display each page sequentially and a command for notifying the display terminal 1 of a display mode selection instruction are transmitted to the display terminal 1 (S8). This command is a command for notifying the display terminal 1 of a selection instruction for whether or not to sequentially display each page and a display mode selection instruction. As described above, the content of the selection instruction is accepted in the process of S2.

A start notification command for notifying the start of file data transmission is transmitted to the display terminal 1 (S9). The value of the page number counter n indicating the number of pages being transmitted is initialized to “0” (S11), and processing for transmitting file data is performed (S12 to S19).

In the process of transmitting file data, it is first determined whether there is no untransmitted page data (whether transmission of data of all pages has been completed) among the file data to be transmitted (S12). If there is an untransmitted page (S12: NO), “1” is added to the value of the page number counter n (S13). From the file data selected in S1, file data in the terminal format of the nth page is generated (S14). A page start command for notifying the start of data transmission for one page is transmitted to the display terminal 1 (S15). The nth page of the file data is transmitted to the display terminal 1 (S16). The data transmission is continued until the transmission of the nth page data is completed (S17: NO) (S16). When the transmission of the nth page of data is completed (S17: YES), a page end command indicating that the data transmission of one page has been completed is transmitted to the display terminal 1 (S18), and the process returns to S12. If there is untransmitted page data (S12: NO), the next page data is transmitted (S13 to S18). When transmission of data of all pages is completed (S12: YES), an end notification command for notifying that transmission of one file data has ended is transmitted to the display terminal 1 (S19). The transmission process ends.

Next, with reference to FIG. 6, a reception process executed by the display terminal 1 disclosed in the first embodiment will be described. The reception process is executed by the CPU 10 in accordance with a program stored in the ROM 11 when a process for establishing communication with the PC 3 is started.

First, communication with the PC 3 is established (S21). A selection instruction as to whether or not to sequentially display each page and a command for notifying the display terminal 1 of a selection instruction for display mode are received, and a selection instruction as to whether or not to sequentially display each page and selection of the display mode Instructions are accepted. Depending on the contents of the received selection instruction, whether or not to perform sequential display and the display mode of the image when sequential display is performed are set (S22). Until a start notification command for notifying the start of file data transmission is received (S23: NO).

When the start notification command is received (S23: YES), it is determined whether or not it is set to execute sequential display (S24). If it is set not to execute sequential display (S24: NO), the file data is received as it is and stored in the memory card 15 (S25) until an end notification command is received (S26: NO). In this case, since the display terminal 1 does not need to execute processing such as image display, the processing load is reduced. As a result, the download speed of the file data is improved and the power consumption is also reduced. When the end notification command is received (S26: YES), the process ends.

If it is set to execute sequential display (S24: YES), processing for receiving file data and processing for performing sequential display are started (S28 to S40). First, it is determined whether an end notification command has been received (S28). If it has not been received (S28: NO), it is determined whether or not a page start command for notifying the start of data transmission for one page has been received from the PC 3 (S29). If not received (S29: NO), the determinations of S28 and S29 are repeated. When the page start command is received (S29: YES), the terminal format file data is received and stored in the memory card 15 (S30).

Next, a process execution instruction for the page displayed on the display panel 26 is accepted (S32 to S35). Specifically, it is first determined whether or not an instruction for giving a mark used for searching a page, such as a bookmark, to the displayed page is input (S32). If it has not been input (S32: NO), the process proceeds to the determination of S34 as it is. If input (S32: YES), an instruction to add a mark to the page is stored in the RAM 12 in association with the displayed page (S33). Next, it is determined whether or not an instruction to delete the data of the displayed page has been input (S34). If it has not been input (S34: NO), the process proceeds directly to the determination of S36. If it is input (S34: YES), an instruction to delete the page data is stored in the RAM 12 in association with the displayed page (S35).

Note that the “page being displayed” refers to the page displayed on the display panel 26 when an instruction is input, that is, when data is being transmitted / received at that time, when full-screen display is performed. The page immediately before the current page. In addition, when thumbnail display is performed, in this embodiment, the page immediately before the page at which data is transmitted / received at that time, that is, the latest page that has been received is surrounded by a thick frame, and the page immediately before this page is displayed. Is the “page being displayed”. That is, the user can input a process execution instruction to the last displayed page among one or a plurality of pages displayed in the thumbnail format on the display panel 26. However, the display terminal 1 may allow the user to select one of one or a plurality of pages displayed in the thumbnail format, not limited to the page displayed last, by the operation unit 27. In this case, the display terminal 1 may store the process execution instruction input in S32 and S34 in association with the selected page. In addition, an instruction accepted when no image is displayed on the display panel 26, that is, when the first page of data is received, is discarded without being stored.

Next, it is determined whether or not a page end command indicating that data transmission of one page has been completed is received from the PC 3 (S36). If not received (S36: NO), the process returns to S30, and reception of page data and reception of an instruction to execute the process are repeated (S30 to S35). If a page end command has been received (S36: YES), it is determined whether or not thumbnail display is set to be executed (S37). If the thumbnail display is set (S37: YES), the latest page for which data has been received is additionally displayed in the thumbnail format on the display panel 26 (S38).

Specifically, as shown in FIG. 7, in addition to the image 51 of the page for which data reception has been completed in the past, the image 52 of the latest page is displayed based on the received file data. In the present embodiment, the latest page 52 is surrounded by a thick frame, and the execution instruction for adding a mark and the execution instruction for deleting a page are processed as instructions for the latest page 52 surrounded by a thick frame.

Note that the display terminal 1 can display an image based on the same file data received from the PC 3 both when displaying the image of the page on the entire screen and when displaying the thumbnail. That is, in the image display system 100, it is not necessary to generate dedicated data for causing the display terminal 1 to display images as thumbnails on the PC 3. Specifically, the dedicated data is preview data. Since there is no need to generate dedicated data on the PC 3, the image display system 100 can display the progress of data download without performing both processing for generating thumbnail display-specific data on the PC 3 and transmission / reception. The display panel 26 can make the user grasp.

On the other hand, if the display is not thumbnail display but full screen display (S37: NO), the image of the previous page that was displayed is erased, and the latest page for which data reception has been completed is displayed on the display panel 26. It is displayed (S39). The process returns to the determination in S28. The page data is repeatedly received until the PC 3 completes the transmission of the data of all pages and transmits an end notification command to the display terminal 1 (S30 to S39).

When the end notification command is received from the PC 3 (S28: YES), the corresponding page data is processed in accordance with the instructions stored in S33 and S35 (S40). That is, processing is performed according to instructions stored in the RAM 12 among the file data stored in the memory card 15. Specifically, a process of assigning a mark or a process of deleting a page with respect to the data of the page displayed on the display panel 26 at the time when the instruction is accepted is collectively performed after the reception of the data of all pages. Is called. Thereafter, the reception process ends.

As described above, the display terminal 1 according to the first embodiment completes reception of data every time reception of data of one page among file data including data of one or more pages is completed. The displayed page can be displayed on the display panel 26. Therefore, the user can check the progress of downloading the file data while downloading the data by viewing the image displayed on the display panel 26. Further, in the conventional image display system, it is not possible to confirm how each page is displayed on the display terminal until transmission of one file data from the PC to the display terminal is completed. However, according to the display terminal 1 disclosed in the first embodiment, the user can check how each page is displayed on the display panel 26 while downloading data. Further, the display terminal 1 displays the page on the display panel 26 after the reception of data of one page is completed. Therefore, the display terminal 1 can control the display more smoothly than in the case where the page being received is displayed while the data of one page is being received.

According to the display terminal 1, the user can cause the display terminal 1 to execute processing for each page while checking the progress of the download while downloading the file data. Therefore, the user can cause the display terminal 1 to execute processing for each page. Specifically, the user can assign a mark used for searching a page to a desired page. The user can delete the data of the desired page while checking the progress of downloading the file data.

The display terminal 1 can execute processing instructed by the user during downloading when receiving one file data, that is, when all the downloading is completed. That is, the display terminal 1 does not need to execute the process instructed by the user while downloading the file data. Therefore, the display terminal 1 can download file data quickly and smoothly, reducing the possibility of problems such as processing delays.

According to the display terminal 1, the user can grasp the progress of the download of the file data by inputting an execution instruction for sequential display. On the other hand, when the user does not need to grasp the progress of the download, it is possible to reduce the processing load during data reception in the display terminal 1 by inputting an instruction not to execute sequential display. As a result of inputting the instruction not to execute the sequential display, the file data download speed can be improved and the power consumption of the display terminal 1 can be reduced. Further, the display terminal 1 can display the page for which data reception has been completed in a thumbnail format. Therefore, the user can grasp the progress of data download and the display mode of each page from the plurality of images displayed in the thumbnail format.

In the first embodiment, the display terminal 1 that controls the display of an image corresponds to the “display control device” of the present disclosure. The display panel 26 corresponds to the “display unit” of the present disclosure. The USB I / F 18 and the wireless communication I / F correspond to “communication means”. The memory card 15 corresponds to “storage means”. In S25 and S30 of FIG. 6, the CPU 10 that receives the file data and stores it in the memory card 15 functions as a “reception unit”. The CPU 10 that determines whether or not the page end command is received in S36 of FIG. 6 functions as a “determination unit”. The CPU 10 that causes the display panel 26 to display the page for which data reception has been completed in S38 and S39 in FIG. 6 functions as a “display control unit”.

In S32 and S34 in FIG. 6, the CPU 10 that receives an instruction to execute a process for the displayed page functions as an “instruction receiving unit”. In S40 of FIG. 6, the CPU 10 that processes the data of the page instructed to execute the process functions as a “processing unit”. The execution instruction accepted in S32 corresponds to the “first execution instruction”. The execution instruction of the process accepted in S34 corresponds to the “second execution instruction”. In S22 of FIG. 6, the CPU 10 receives a selection instruction for performing sequential display by receiving from the PC 3 a command for selecting whether or not to sequentially display each page and a command for notifying the display terminal 1 of a display mode selection instruction. However, it functions as “selection accepting means”.

The process of receiving the file data and storing it in the memory card 15 in S25 and S30 of FIG. 6 corresponds to the “reception step” of the present disclosure. The process of determining whether or not a page end command has been received in S36 of FIG. 6 corresponds to a “determination step”. The process of displaying the page for which data reception has been completed on the display panel 26 in S38 and S39 in FIG. 6 corresponds to a “display control step”.

The image display system according to the second embodiment, which is one aspect of the present disclosure, will be described with reference to FIGS. 8 and 9. In the image display system of the second embodiment, the PC 3 that operates according to a driver program corresponding to the “data transmission program” in the present disclosure controls the sequential display of images on the display terminal 1. This is different from the first embodiment in which the display terminal 1 sequentially controls display. Processing other than the above and the configuration of each device are the same as the processing and configuration in the first embodiment. Therefore, the same processing as the processing in the first embodiment and the configuration of each device are assigned the same numbers as in the first embodiment, and the description is omitted or simplified.

Referring to FIG. 8, a transmission process executed by the PC 3 disclosed in the second embodiment will be described. The transmission processing shown in FIG. 8 is executed by the CPU 30 of the PC 3 according to the driver program stored in the HDD 33. First, an instruction to select transmission data by the user is accepted (S1). An instruction to select whether to perform sequential display on the display panel 26 is accepted (S2). When an instruction to start transmission of file data is input (S4: YES), communication with the display terminal 1 is established (S5). The display terminal 1 is notified of the start of file data transmission (S9). The value of the page number counter n is initialized to “0” (S11). Thereafter, a process of transmitting file data and a process of instructing the display terminal 1 to sequentially display pages for which data transmission has been completed are executed.

First, it is determined whether there is no untransmitted page data among the file data to be transmitted, that is, whether the transmission of data of all pages is completed (S12). If there is an untransmitted page (S12: NO), “1” is added to the value of the page number counter n (S13). Terminal format data for displaying the nth page is generated (S14). A page start command for notifying the start of data transmission for one page is transmitted to the display terminal 1 (S15). The generated nth page file data is transmitted to the display terminal 1 (S16, S17). When the transmission is completed (S17: YES), a page end command is transmitted (S18).

Next, it is determined whether or not it is set to execute sequential display (S51). When a selection instruction not to perform sequential display is input in the process of S2 (S51: NO), the process directly returns to the determination of S12. If it is set to execute sequential display (S51: YES), the latest page display instruction command for instructing the display panel 26 to display the page for which data transmission has been completed last is transmitted to the display terminal 1. (S52). The process returns to the determination in S12. The latest page display instruction command is provided with a command for instructing execution of full screen display and a command for instructing execution of thumbnail display. The CPU 30 instructs execution of either full screen display or thumbnail display according to the selection instruction received in S2.

Until the transmission of all pages is completed (S12: NO), the data transmission process (S13 to S18) of each page and the process of instructing display (S51, S52) are repeated. When transmission of data of all pages is completed (S12: YES), an end notification command for notifying that transmission of one file data has ended is transmitted to the display terminal 1 (S19). The transmission process ends.

With reference to FIG. 9, the reception process executed by the display terminal 1 disclosed in the second embodiment will be described. The reception process is executed by the CPU 10 of the display terminal 1 in accordance with a program stored in the ROM 11 when a process for establishing communication with the PC 3 is started. First, communication with the PC 3 is established (S21). When the start notification command is received (S23: YES), the process of receiving the file data is started. When a page start command is received (S29: YES), processing for receiving and storing page file data is performed (S30). When a process execution instruction for the page displayed on the display panel 26 is input (S53: YES), the input process execution instruction is stored in the RAM 12 in association with the displayed page (S54). . Until the page end command is received (S36: NO), the process of downloading the file data is repeated.

When the page end command is received, it is determined whether or not the latest page display instruction command is received (S61). As described above, the latest page display instruction command is an instruction for instructing the display panel 26 to display the last page for which data transmission has been completed. The latest page display instruction command is transmitted each time the transmission of data of each page is completed when the sequential display setting is performed in the PC 3. If no command is received (S61: NO), the process directly returns to the determination in S28. When the latest page display instruction command is received (S61: YES), the latest page that has been received is displayed on the display panel 26 (S62). The CPU 10 displays an image in either a full screen display or a thumbnail display according to the type of the received command. The process returns to the determination in S28. When the end notification command is received (S28: YES), the corresponding page data is processed according to the instruction stored in S54 (S40), and the process ends.

As described above, the PC 3 disclosed in the second embodiment completes the transmission of data each time transmission of data of one page is completed among file data including data of one or more pages. The page can be displayed on the display panel 26 of the display terminal 1 while the file data is being downloaded. Therefore, the user can check the progress of downloading the file data while downloading the data by viewing the image displayed on the display panel 26. The user can check how each page is displayed on the display panel 26 while downloading the data.

The user can grasp the progress of downloading the file data on the display panel 26 by inputting a sequential display execution instruction to the PC 3. On the other hand, when the user does not need to grasp the progress of the download, it is possible to reduce the processing load during data reception in the display terminal 1 by inputting an instruction not to execute sequential display. As a result, the file data download speed can be improved and the power consumption of the display terminal 1 can be reduced.

In the second embodiment, the driver program that causes the PC 3 to execute the transmission process illustrated in FIG. 8 corresponds to the “data transmission program” of the present disclosure. The display terminal 1 that controls the display of images corresponds to the “display control device” of the present disclosure. The display panel 26 corresponds to the “display unit” of the present disclosure. The USB I / F 38 and the wireless communication I / F 39 correspond to “communication means”. The process of transmitting page data in S16 of FIG. 8 corresponds to a “data transmission step”. The process of transmitting the latest page display instruction command in S52 of FIG. 8 corresponds to a “display instruction step”.

It goes without saying that the present disclosure is not limited to the above-described embodiment, and various modifications are possible. The display terminal 1 disclosed in the above embodiment is a portable terminal including the display panel 26. However, the present disclosure is not limited to a terminal including the display panel 26. For example, the present disclosure can also be applied to a display control apparatus that does not include a display but is connected to an external display and controls display of the connected display. Further, the present invention can be applied to a projector that projects an image on a screen.

The PC 3 of the above embodiment generates file data in the terminal format from the file data selected to be transmitted, and transmits the generated data to the display terminal 1. However, the present disclosure can also be applied to the case of transmitting the file data without changing the format such as the data format. The display terminal 1 may display a progress bar indicating the progress of data download. In this case, for example, the CPU 30 of the PC 3 notifies the display terminal 1 of the data amount or the number of pages of the file data to be transmitted when the start notification command is transmitted to the display terminal 1 in S9 of FIG. The CPU 10 of the display terminal 1 may display a progress bar based on the notified data amount and the received data amount when the file data is received in S30 of FIG. In this case, the user can grasp the progress of data download.

In the above embodiment, in the transmission process executed by the PC 3 (see FIGS. 4 and 8), a page start command is transmitted at the start of transmission of data for each page (S15), and further, the page at the end of transmission of page data is transmitted. An end command is transmitted (S16). However, one of the page start command and the page end command can be omitted. The end of page data transmission coincides with the start of transmission of the next page. Therefore, even if a command is transmitted only at the start or end of page transmission, the same processing as in the above embodiment can be realized.

In the first embodiment, the PC 3 inputs a selection instruction as to whether to perform sequential display and a selection instruction as to whether to perform thumbnail display (S2, see FIG. 4). The PC 3 transmits a command indicating the selected selection content to the display terminal 1 (S8, see FIG. 4). The display terminal 1 receives a command transmitted from the PC 3 and receives a selection instruction from the user (S22, see FIG. 6). However, the display terminal 1 may accept the selection instruction directly by the operation unit 27 without using the PC 3. In this case, the display terminal 1 may display a screen similar to the file data transmission / reception setting screen shown in FIG. 5 on the display panel 26, prompt the user to operate the operation unit 27, and accept a selection instruction.

The display terminal 1 of the above embodiment can accept an instruction to add a mark to a displayed page and an instruction to delete data on the displayed page while receiving file data (S32, S34, FIG. 6). reference). However, the execution instruction of the process that can be accepted by the display terminal 1 during the reception of the file data is not limited to this. For example, the display terminal 1 gives an instruction to rotate the displayed page, an instruction to designate as a page to be initially displayed on the display panel 26, an instruction to designate as a representative page displayed as a thumbnail in order to show an outline of file data, and the like. The file data may be received during reception. Further, the display terminal 1 may accept an input of an instruction to stop downloading file data. In this case, the display terminal 1 may notify the PC 3 that a download stop instruction has been input, and stop sending data from the PC 3.

The display terminal 1 of the above embodiment stores the input execution instruction when an execution instruction for the process is input during the download of the file data. The display terminal 1 executes processing for each page in accordance with the stored execution instruction after downloading of all the pages of the file data is completed. As a result, the display terminal 1 can prevent an increase in processing load during downloading of file data. However, the display terminal 1 may execute the process when the execution instruction is input without waiting for the completion of the download of the file data. For example, the processing corresponding to the execution instruction may be executed before one page is downloaded and the next page starts to be downloaded.

The display terminal 1 of the above embodiment displays an image based on the same file data received from the PC 3 in both cases where the image of the page is displayed on the entire screen and when the thumbnail is displayed. Therefore, the image display system 100 does not need to perform any process for generating thumbnail display-dedicated data by the PC 3 and any process for transmitting and receiving. However, it is also possible for the PC 3 to generate data dedicated to thumbnail display and transmit it to the display terminal 1.

1 Display terminal 3 PC
10 CPU
11 ROM
12 RAM
15 Memory card 18 USB I / F
19 Wireless communication I / F
26 Display panel 27 Operation unit 30 CPU
32 RAM
38 USB I / F
39 Wireless communication I / F
100 Image display system

Claims (9)

Display control that includes a communication unit that performs data communication with an external device, receives data from the external device via the communication unit, and causes the display unit to display an image according to the received data. A device,
Receiving means for receiving file data including data of one or more pages to be displayed on the display means from an external device via the communication means, and storing the data in a storage means for storing data;
Determining means for determining whether reception of data of one page of the file data is completed by the receiving means;
A display that causes the display means to display the one page during the reception of the file data in accordance with the data stored in the storage means each time the determination means determines that the reception of the data of the one page has been completed. And a display control device. An instruction receiving means for receiving a process execution instruction for the page displayed on the display means by the display control means during the reception of the file data;
Processing means for executing the process instructed by the execution instruction on the data of the page instructed to execute the process by the execution instruction when the instruction accepting means is accepted by the instruction accepting unit; The display control apparatus according to claim 1, further comprising a display control apparatus. The instruction receiving means can receive a first execution instruction which is an execution instruction of a process for providing a mark used for searching a page,
The display control apparatus according to claim 2, wherein the processing unit assigns the mark to a page instructed to execute the process when the first execution instruction is received by the instruction receiving unit. . The instruction receiving means can receive a second execution instruction that is an execution instruction for a process of deleting a page,
3. The processing unit according to claim 2, wherein when the second execution instruction is received by the instruction receiving unit, the processing unit deletes data of a page instructed to execute the process from the storage unit. Display control device. The processing means, when reception of one file data by the receiving means is completed, executes processing according to an execution instruction received by the instruction receiving means during reception of the one file data. The display control apparatus according to claim 2. A selection receiving means for receiving a selection instruction as to whether or not to display a page for which data reception has been completed on the display means during reception of file data;
The display control means causes the display means to display the one page every time reception of data of one page is completed only when a selection instruction for displaying a page is accepted by the selection accepting means. The display control apparatus according to claim 1. The display control apparatus according to claim 1, wherein the display control means is capable of displaying a plurality of pages for which data reception has been completed on the display means in a thumbnail format. Display control that includes a communication unit that performs data communication with an external device, receives data from the external device via the communication unit, and causes the display unit to display an image according to the received data. A display control program to be executed by a device,
On the computer,
A receiving step of receiving file data including data of one or more pages to be displayed on the display means from an external device via the communication means, and storing the data in a storage means for storing data;
A determination step of determining whether reception of data of one page of the file data is completed by the reception step;
A display that causes the display means to display the one page during reception of the file data in accordance with the data stored in the storage means each time it is determined that the reception of the data of one page is completed by the determining step. A display control program for executing control steps. A data transmission program for transmitting file data for displaying an image on the display means to a display control device for displaying an image on the display means in accordance with data received from an external device,
On the computer,
A data transmission step of transmitting file data including data of one or more pages to be displayed on the display means to the display control device via a communication means for performing data communication;
A display instruction step of transmitting an instruction to display the one page on the display means to the display control device every time transmission of data of one page of the file data is completed in the data transmission step. Data transmission program to make it.

Images