JP2004185568A - Display device and display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suitable display device having improved usability in security protection. <P>SOLUTION: The display device comprises a means of displaying information to a plurality of persons, a means of determining whether the information to be displayed includes confidential information, and a means of taking such control that the display means is inhibited from displaying the information if the determination means determines that the information include confidential information. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a display device and a display method used for a presentation.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, when making a presentation, an overhead projector or a projector display connected to a computer has been widely used. A data image is created by presentation software of a computer, transferred to a projector display, and displayed outside by projecting the data image.
[0003]
Also, the following methods have been proposed as methods for restricting information browsing.
[0004]
(1) Many computers can be set to require a user ID and password when starting an operation.
[0005]
(2) The application software “Acrobat” of Adobe can be set to require a password when browsing a data file.
[0006]
(3) Patent Literature 1 below discloses an example in which additional information is added to information provided on a network to restrict use by a user or a place.
[0007]
[Patent Document 1]
JP-A-09-160899 [0008]
[Problems to be solved by the invention]
However, in the above-mentioned conventional example, there is a disadvantage that the viewing restriction can be performed only by the qualification of the operator of the device. That is, even if many audiences may browse, if the operator himself is qualified to access information, everyone can browse. In such a case, whether or not to allow all members to browse depends on the judgment of the operator. It is very difficult to ensure confidentiality because there is a possibility that the operator may inadvertently make it visible to an audience without access privileges.
[0009]
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a suitable display device and a display method which improve usability relating to confidentiality.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the display device of the present invention has the following configurations (1) to (4), and the display method has the following configurations (5) to (8).
[0011]
(1) means for displaying information for a plurality of persons;
Means for determining whether the information to be displayed contains confidential information;
Means for controlling display of information on the display means to be prohibited when the result of the determination means is confidential information;
Display device provided with.
[0012]
(2) The display device according to (1), wherein the determination unit determines whether a confidential attribute is added to the information to be displayed.
[0013]
(3) The display device according to (1), wherein the determining unit searches the information to be displayed and determines that the information is confidential information when a word meaning confidential is included.
[0014]
(4) Pattern matching means is further provided, wherein the determination means determines that the displayed information is confidential information if the displayed information includes a phrase or pattern meaning confidential by performing pattern matching. The display device according to the above.
[0015]
(5) displaying information for a plurality of persons;
Determining whether the information to be displayed contains confidential information;
Controlling the display of information in the display step to be prohibited when the result of the determination step is confidential information;
Display method with
[0016]
(6) The display method according to (5), wherein the determining step determines whether a confidential attribute is added to the information to be displayed.
[0017]
(7) The display method according to (5), wherein the determining step is to search the information to be displayed and determine that the information is confidential information when a word meaning confidential is included.
[0018]
(8) The method further comprises the step of performing pattern matching, wherein the determining step performs pattern matching on the information to be displayed, and determines that the displayed information is confidential information when a word or pattern meaning confidential is included. Display method of description.
[0019]
In the configuration of the present invention, it is determined whether the data to be displayed to the audience is confidential information, and if the data is confidential information, the display is prohibited.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0021]
Embodiment 1
In the present embodiment, in a device for displaying data to a plurality of persons using a projector or the like, it is determined whether or not the data to be displayed to the audience has a confidential attribute, and if the data is confidential information, the display is prohibited. Perform the operation.
[0022]
<Overall configuration of display device (FIG. 2)>
The configuration of the display device will be described with reference to the block diagram of FIG.
[0023]
The display device of the present embodiment is a portable information terminal capable of displaying a large screen by connecting to a projector. In the portable information terminal 1, a CPU 2 controls the entire apparatus, and executes processes such as shooting control, various calculations, and I / O control according to a program stored in a memory unit 3. The memory unit 3 includes a RAM, a ROM, and the like, and stores a control program of the CPU 2, work data, and the like. Further, it also functions as a VRAM for storing an image to be displayed on a liquid crystal display (LCD) 10 or a projector display 13 described later. A secondary storage device such as a hard disk, a magneto-optical disk, a CD-ROM, a CD-RW, or a DVD-ROM may be included. Reference numeral 4 denotes an expansion card (expansion card slot) into which an expansion memory, a function I / O card, and the like can be inserted. Any standard IC card such as PCMCIA, CF, SD, and MMC can be used. An expansion card interface 5 controls an IC card inserted into the expansion card slot 4. A communication interface 6 connects to an external network or device. It is connected to a network by a wireless LAN such as Bluetooth or 802.11b, a wired LAN such as Ethernet®, or a public line connection. External devices are connected by interfaces of various standards such as USB, IEEE 1394, and RS232C. Reference numeral 7 denotes a keyboard interface for inputting key data from a keyboard connected as an option. Reference numeral 8 denotes a digitizer using a resistive tablet or the like. It is composed of a polyethylene film (PET) with a resistive film deposited on the opposite surface and glass, and the pressed position on the PET can be detected. By superposing this on the liquid crystal display 10, an input / output integrated user interface can be configured. Reference numeral 9 denotes a digitizer control unit which drives the digitizer 8 to convert a point pressed by the user into coordinate data and output the coordinate data. It is composed of a resistive film driving circuit, a switching circuit, an A / D converter and the like. A liquid crystal display 10 displays various data in the apparatus. An image image when performing projector display and a software switch for performing device control are also displayed. Reference numeral 11 denotes a liquid crystal display display control unit, which generates a signal for operating the liquid crystal display 10. Reference numeral 12 denotes a projector display control unit, which generates a signal for operating an external projector display 13. An image is transmitted as a composite signal or RGB signal for video input / output. It is also possible to transmit audio data in the form of analog line output. A projector display 13 displays an image on a large screen by a projection type or other method. Reference numeral 14 denotes a data file (presenter) to be displayed on the projector. Data created by various applications such as document creation, spreadsheets, and presentation material creation can be used.
[0024]
<Structure of data file (Fig. 3)>
FIG. 3 is a diagram showing the configuration of a data file, and a method for adding a confidential attribute to the data file will be described with reference to FIG. In the figure, reference numeral 30 denotes a data file body. Reference numeral 31 denotes a file header, which stores information such as a file format and size, a creator and a creation date and time. Reference numeral 33 denotes a data body such as a presentation material or an image. 32 is a secret attribute. If there is no confidential information in the data, a value indicating "general display permission" is written. On the other hand, when confidential information is included, a value representing “confidential information” is written.
[0025]
<Explanation of projector display processing (FIG. 1)>
The flow of the projector display process will be described with reference to the flowchart of FIG. When a display of new data is requested by a screen feed or the like, it is determined whether or not the data has a confidential attribute, and if the data is confidential information, the display is prohibited.
[0026]
The process will be described in detail. When a new screen is requested to be displayed, data to be displayed next is read from the memory 3 in step S101. In step S102, the read display data is analyzed, and the confidential attribute 32 is extracted. In step S103, it is determined whether the value of the confidential attribute 32 is “permitted for general display”. If the value is affirmative, the process proceeds to step S104. If the value is negative, the process proceeds to step S105. In step S104, the data body 33 is displayed on the LCD 10 and the projector display 13, and the process ends. Step S105 is processing in a case where confidential information is included in the data and display is not permitted. Here, while the data body 33 is displayed on the LCD 10, the dummy data is displayed on the projector display 13 instead of the confidential data, and the process ends.
[0027]
<Description of display screen example (FIGS. 4 and 5)>
An example of a display screen when performing projector display will be described with reference to FIGS. 4 and 5.
[0028]
FIG. 4 is a diagram illustrating an example of an LCD screen and a projector screen when data whose confidential attribute is “general display permission” is to be displayed. FIG. 4A shows a display screen on the LCD 10. In the figure, 40 represents the entire LCD screen, and 41 is the presentation data body. Buttons 42 to 44 are displayed on the screen. When the button 42 is pressed, the screen is returned by one screen, when the button 43 is pressed, the operation is terminated, and when the button 44 is pressed, the operation is advanced by one screen. FIG. 4B shows a display example of the projector screen. Since the general display is permitted, the same data as on the LCD screen is displayed on the projector as indicated by 45.
[0029]
FIG. 5 is a diagram illustrating an example of an LCD screen and a projector screen when displaying data having a confidential attribute of “confidential information”. FIG. 5A shows a display screen on the LCD 10. Reference numeral 51 denotes a presentation data body including confidential information, and a display is performed on the LCD 10. At the same time, as shown at 52, a message warning that the information is confidential information is displayed. FIG. 5B shows a display example of the projector screen. Since the display is prohibited by the confidential attribute 32, dummy data is displayed on the projector as indicated by 54.
[0030]
As described above, if the data contains confidential information, the display can be prohibited.
[0031]
As shown in FIG. 5A, a release button 53 may be provided, and the display prohibition may be released by pressing this button.
[0032]
As described above, according to the present embodiment, a confidential document is inadvertently displayed by determining whether the attribute of the data to be displayed to the audience is confidential information and prohibiting the display if the attribute is confidential information. Such mistakes can be eliminated. Thereby, confidential information management can be performed more easily.
[0033]
The present invention is not limited to the above-described embodiment, but can be widely applied.
[0034]
For example, it is also possible to set a security level at a plurality of levels as the value of the security attribute, and write a value corresponding to each. In this case, a list of attribute values that can be added may be displayed so that the attributes whose display is prohibited can be individually specified.
[0035]
The unit for which display is prohibited may be a data file unit or an individual screen unit. It may be a partial area in the screen. In this case, the dummy data may be combined and displayed in the corresponding area.
[0036]
Embodiment 2
In the above-described embodiment, a process has been described in which it is determined whether or not data to be displayed to the audience has a confidential attribute, and if the data is confidential information, the display is prohibited. However, new attributes may not be added to data in some cases. For example, a case where the file format is strictly standardized in a specific application. In the present embodiment, an example will be described in which data to be displayed is searched, and when a word meaning confidential is included, the data is determined to be confidential information.
[0037]
<Configuration of Entire Device (FIGS. 7 and 8)>
FIG. 7 is a block diagram illustrating the configuration of the display device according to the present embodiment. Since the device of the present embodiment is almost the same as that of the first embodiment, the same elements are denoted by the same reference numerals and description thereof will be omitted. In the present embodiment, the memory 3 includes a confidential phrase table 15. The configuration of the confidential phrase table 15 is as shown in FIG. The confidential phrase table 15 stores phrases indicating confidentiality, such as “secret” and “Secret”.
[0038]
<Explanation of Projector Display Processing (FIG. 6)>
Next, the flow of the projector display process will be described with reference to the flowchart of FIG. When a display of new data is requested by a screen feed or the like, a search is performed to determine whether the data includes a word indicating confidentiality, and if so, the display is prohibited.
[0039]
The process will be described in detail. When a display of a new screen is requested, in step S201, data to be displayed next is read from the memory 3. In step S202, a search is made as to whether the read display data includes a phrase registered in the confidential phrase table 15. In step S203, it is determined whether or not a phrase in the confidential phrase table 15 has been included. If affirmative, the process proceeds to step S204, and if negative, the process proceeds to step S205. In step S204, the data body 33 is displayed on the LCD 10 and the projector display 13, and the process ends. Step S205 is processing in a case where confidential information is included in the data and display is not permitted. Here, while the data body is displayed on the LCD 10, dummy data is displayed on the projector display 13 instead of the confidential data, and the process is terminated.
[0040]
An operation example of screen display will be described based on FIGS. 4 and 5. FIG. 4A does not include a phrase in the confidential phrase table 15 as shown in FIG. 8, so that the data content is displayed on the projector display 13 as it is. On the other hand, the data body 51 in FIG. 5A includes the phrase “confidential”. In the present embodiment, when a word in the confidential phrase table 15 is detected, it is determined that display is prohibited. Therefore, dummy data is displayed on the projector display 13 instead of confidential data.
[0041]
As described above, according to the present embodiment, it is possible to determine whether data to which a new attribute cannot be added is confidential information, and confidential information management can be performed more easily.
[0042]
The present invention is not limited to the above-described embodiment, but can be widely applied.
[0043]
For example, display may be prohibited by searching for character data that has been subjected to character modification such as underlining or colored characters. Important words and phrases that have confidentiality are often emphasized by character modification. By detecting such words, confidentiality can be secured.
[0044]
FIG. 9 shows an example of the setting screen of the security modification attribute in this case. In the figure, reference numeral 90 denotes a screen for setting a confidential decoration attribute, reference numeral 91 denotes a candidate decoration attribute, and reference numeral 92 denotes a selection button. By pressing the selection button 92 corresponding to the desired decoration attribute 91, it is possible to set whether or not to perform the display prohibition operation.
[0045]
Embodiment 3
In the above-described embodiment, an example has been described in which information to be displayed is searched, and when a word meaning confidential is included, it is determined to be confidential information. However, in the case of an image such as bitmap data, it is not possible to simply perform a text search for a word meaning confidential. In the present embodiment, an example will be described in which information to be displayed is subjected to pattern matching, and when a word or pattern meaning confidential is included, it is determined to be confidential.
[0046]
<Overall configuration of the apparatus (FIGS. 11 and 12)>
FIG. 11 is a block diagram illustrating the configuration of the display device according to the present embodiment. Since the device of the present embodiment is almost the same as that of the first embodiment, the same elements are denoted by the same reference numerals and description thereof will be omitted. In the present embodiment, the memory 3 includes a confidential image dictionary 16 for storing image images indicating confidentiality. The configuration of the confidential image dictionary 16 is as shown in FIG. The confidential image dictionary 16 stores image image data of characters indicating confidentiality such as “secret” and “Secret”. At the same time, a mark indicating confidentiality and image data of a design are stored as shown at 110.
[0047]
The pattern matching of the present embodiment is performed by the CPU 2. That is, the presentation data 14 is read from the memory 3, an area is cut out, feature points of the area are extracted, and the feature points of the confidential image dictionary 16 are compared. If there is dedicated hardware for performing image recognition, it is of course possible to use it.
[0048]
<Description of Projector Display Processing (FIG. 10)>
Next, the flow of the projector display process will be described with reference to the flowchart of FIG. When new data is requested to be displayed, for example, by a screen feed, a process is performed in which pattern matching is performed to determine whether the data contains an image indicating confidentiality, and if so, the display is prohibited. .
[0049]
The process will be described in detail. When a new screen is requested to be displayed, data to be displayed next is read from the memory 3 in step S301. In step S302, the read display data is subjected to pattern matching to search for an image registered in the confidential image dictionary 16. In step S303, it is determined whether or not the image of the confidential image dictionary 16 has been included. If the determination is affirmative, the process proceeds to step S304. If the determination is negative, the process proceeds to step S305. In step S304, the data body 33 is displayed on the LCD 10 and the projector display 13, and the process ends. Step S305 is processing in a case where confidential information is included in the data and display is not permitted. Here, while the data body is displayed on the LCD 10, dummy data is displayed on the projector display 13 instead of the confidential data, and the process is terminated.
[0050]
The operation example will be described with reference to FIG. 5. The data body includes a character image of “confidential”. In the present embodiment, when the image of the confidential image dictionary 16 is detected, it is determined that the display is prohibited. Therefore, dummy data is displayed on the projector display 13 instead of the confidential data.
[0051]
As described above, according to the present embodiment, even in the case of an image such as bitmap data, it can be determined whether or not the image is confidential information, and confidential information management can be performed more easily.
[0052]
【The invention's effect】
As described above, according to the present invention, it is determined whether the data to be displayed to the audience is confidential information, and if the data is confidential information, the display is prohibited. Can be eliminated. As a result, there is an effect that usability at the time of performing secrecy can be improved.
[Brief description of the drawings]
FIG. 1 is a flowchart showing a flow of a display determination process in Embodiment 1. FIG. 2 is a block diagram showing a schematic configuration of a display device in Embodiment 1. FIG. 3 is a diagram showing a configuration of a data file in Embodiment 1. 4 Example of display of data with no confidential attribute set in Embodiment 1 [FIG. 5] Example of display of data with confidential attribute set in Embodiment 1 [FIG. 6] Flow of display determination processing in Embodiment 2 FIG. 7 is a block diagram illustrating a schematic configuration of a display device according to the second embodiment. FIG. 8 is a diagram illustrating a configuration of a confidential phrase table according to the second embodiment. FIG. 10 is a diagram illustrating an example. FIG. 10 is a flowchart illustrating a flow of a display determination process according to a third embodiment. FIG. 11 is a block diagram illustrating a schematic configuration of a display device according to the third embodiment. Diagram showing a configuration of a confidential image dictionary in Example 3 [Description of symbols]
1 portable information terminal 2 CPU
3 memory (memory part)
4 Expansion card (expansion card slot)
5 Expansion card interface 6 Communication interface 7 Keyboard interface 8 Digitizer 9 Digitizer control unit 10 Liquid crystal display (LCD)
11 LCD display control unit 12 Projector display control unit 13 Projector display 14 Presentation display data (presentation data)
15 confidential phrase table 16 confidential image dictionary 30 data file body 31 file header 32 confidential attribute 33 data body 40 LCD screens 41, 51 presentation data bodies 42, 43, 44 buttons 53 release button 90 confidential qualification attribute setting screen 91 qualification attribute 92 Selection button

Claims (8)

Means for displaying information to a plurality of persons;
Means for determining whether the information to be displayed contains confidential information;
Means for controlling the display of information on the display means to be prohibited when the result of the determination means is confidential information;
A display device comprising: The display device according to claim 1, wherein the determining unit determines whether a confidential attribute is added to the information to be displayed. 2. The display device according to claim 1, wherein the determination unit determines that the information to be displayed is confidential information when the information to be displayed is searched and a word meaning confidential is included. Means for performing pattern matching, wherein the determination means determines that the information to be displayed is confidential information by performing pattern matching on the information to be displayed when a word or pattern meaning confidential is included. The display device according to 1. Displaying information for a plurality of people;
Determining whether the information to be displayed contains confidential information;
Controlling the display of information in the display step to be prohibited when the result of the determination step is confidential information;
A display method comprising: 6. The display method according to claim 5, wherein the determining step determines whether a confidential attribute is added to the information to be displayed. 6. The display method according to claim 5, wherein the determining step determines that the information to be displayed is confidential information when the information to be displayed is searched and a word meaning confidential is included. A pattern matching step, wherein the determination step determines that the information to be displayed is confidential information if the displayed information includes a phrase or pattern meaning confidential. 5. The display method according to item 5.

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