JP2001013945A - Display device provided with external factor detecting function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the display device provided with an external factor detecting function which is capable of performing the display by changing a display format to an easy-to-see display format in accordance with an external factor when the external factor including vibration and noise or the like is imparted to itself of a device in a display device capable of display more numerous information with a small display screen. SOLUTION: The display mode in accordance with the situation of environment in which a display device is to be used can be realized by allowing the display device to be provided with an external factor detecting part 20 detecting an external factor from the environment in which the main body of the device is to be used and a display control part 10 which judges the characteristic of the detected external factor when the external factor is detected in the external factor detecting part 20 and selects or generates character font patterns different from character font patterns in being displayed at present based on the detected result and generates display images from these character font patterns and makes generated display images to be displayed on a display part 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for displaying information including characters, figures and images, and more particularly to a display device having a function for detecting an external factor (environment) such as vibration. Things.

[0002]

2. Description of the Related Art In recent years, information devices and electronic devices including electronic notebooks, electronic books, mobile phones, CD / MD players for displaying lyrics, etc., have a built-in display device, a battery, and are light and compact. Devices of various genres have been commercialized, including portable devices that are designed and can be used anytime and anywhere. These devices are required to output a large amount of information contrary to a lightweight and compact design. Also, when using these devices while traveling on vehicles such as trains,
If character information or the like is to be obtained from the display screen of the device, the focus tends to be deviated due to the vibration of the vehicle, and there is a problem that it is difficult to distinguish small characters. In other words, small equipment
In order to emphasize portability, the display screen becomes smaller accordingly, and more information is to be displayed on the smaller display screen, which makes it difficult to distinguish small characters and makes the display difficult to see. Have.

In order to improve this problem, for example, Japanese Patent Application Laid-Open No. Hei 7-319614 discloses a technique for detecting input vibration and detecting the vibration and setting sampling information arbitrarily to obtain accurate input information. A technique for improving the recognition rate of character recognition and the like has been disclosed.

[0004]

However, the technique described above still has the following problems.

When the technique disclosed in Japanese Patent Application Laid-Open No. 7-319614 is used while riding in a vehicle, the input means for external vibration is improved. However, when the user confirms the input result, the external vibration is also required. , There remains a problem that it is difficult to determine a character.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a display device capable of displaying more information on a small display screen, including vibration, noise, and the like. It is an object of the present invention to provide a display device with an external factor detection function that can change the display font into an easily viewable display font according to the external factor when the external factor is given to the device itself.

[0007]

According to the present invention, there is provided a display device having an external factor detecting function, comprising: a font pattern generating means capable of generating a plurality of types of display character fonts; and a font pattern storage for storing the character fonts. Means,
What is claimed is: 1. A display device comprising: a display image generating unit configured to generate a display image from the character font; and a display unit configured to output and display the display image, wherein the external device detects an external factor from an environment using the main device. Factor detecting means; determining when the external factor is detected by the external factor detecting means; determining the characteristic of the detected external factor; and determining the font based on a result of the determining means. A character font pattern different from the currently displayed character font pattern is selected from the pattern storage means, a display image is generated by the display image generating means from the selected character font, and the generated display image is displayed on the display screen. And display control means for displaying by means.

According to the present invention, there is provided a display device with an external factor detecting function, comprising: a basic pattern storage means for storing a basic pattern of characters; and a font pattern capable of generating a plurality of types of display character fonts based on the basic pattern. A display device comprising: a generation unit; a display image generation unit configured to generate a display image from the character font; and a display unit configured to output and display the display image. External factor detecting means for detecting, when the external factor is detected by the external factor detecting means, determining means for determining the characteristic of the detected external factor, based on a result of the determining means Then, the font pattern generating means generates a character font pattern different from the character font pattern currently being displayed, and determines whether the generated character font pattern is It generates a display image by the display image generating means, characterized in that a display image which is the product formed by and a display control means for displaying at said display means.

Further, in the display device with an external factor detection function according to the present invention, the display control means may be arranged such that, when the display image is generated from the character font by the display image generation means, the target data is a delimiter. It is characterized in that the display image generating means is instructed to generate the delimiter in a size different from that of ordinary characters, and is generated.

Further, in the display device with an external factor detection function according to the present invention, the display control means may display the display image using a character font pattern different from the character font pattern currently being displayed based on the result of the determination means. When the display is performed on the display, the display further includes display release designation means for returning the displayed state to the original display state.

In the display device with an external factor detecting function according to the present invention, the external factor detecting means detects at least one of external factors including vibration, sound, and brightness. .

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a display device with an external factor detecting function according to the present invention will be described below with reference to the drawings.

The display device with an external factor detecting function according to the present invention can display various information devices including an electronic notebook, an electronic book, a portable information tool, a pocket computer, a notebook / palm-top personal computer, a word processor, a mobile phone, etc., and lyrics. CD / MD players, and various electronic devices including a navigator and the like. In the following embodiments, for the sake of simplicity, external factors are assumed to be vibrations, and a display device having a vibration detection function will be mainly described. However, the present invention is not limited to this, and is not limited thereto. It may be sound or the brightness of the place where the device is used. (First Embodiment) FIG. 1 is a block diagram showing an example of a functional configuration of a display device with a vibration detection function, which is one of display devices with an external factor detection function.

The display device has a vibration detecting section 2 for detecting vibration.
1, a content storage unit 50 storing information to be displayed, a character font table storage unit 40 storing font display pattern information, a display unit 30 displaying content content, and information from each unit. The display control unit 10 generates display image information based on the display image information, and outputs the generated display image information to the display unit 30. The variable storage unit 11 stores variables and constants used by the display control unit 10. It is configured. In addition to the above, there are keys as input means for performing display control such as information input and display scrolling. Further, in this embodiment, there is provided means for switching the display state between the normal display state and the special display state. For example, an enlargement release button 60 is provided as display release designation means for returning the display state from the special display state to the normal display state.

The vibration detecting section 21 is for detecting vibration of an information device or an electronic device main body equipped with the display device with a vibration detecting function of the present embodiment.

FIG. 2 is a conceptual diagram showing an example of a conceptual configuration of the vibration detecting section. The vibration detection unit 21 includes a cube 29 and a ball 21 having a radius slightly smaller than the cube 29.
And a contact sensor 22 provided on each surface of the cube 29. The ball 21 in the cube 29 outputs an output signal (TO) associated with the contact of the contact sensor 22 provided on each surface.
P, BACK, RIGHT, BOTTOM, FRON
T, LEFT) 24 and the contact period thereof
For example, a method of detecting vibration by monitoring by using a method can be considered.

How much vibration occurs when it is determined to be vibration, and how long the cycle is determined to be vibration, etc., differ depending on the application, product category, and usage scene used by the user. When the vibration detecting device having the function of the vibration detecting unit 21 shown in FIG. 2 is used, for example, while riding on a train or the like, the time when the contact cycle of the contact signal to a different surface is short is “vibrating”. In the case of walking, a method of determining that the vibration amount is large is determined to be “during vibration”. However, since this determination method is not directly related to the present invention, its details are omitted.

The vibration detecting unit 21 detects that the apparatus is vibrating (in some cases, it is easier to detect that the apparatus is not vibrating), or shifts from the non-vibrating state to the vibrating state (in some cases). Is an electronic chip sensor including a mechanism for outputting one or both of a transition from a vibration state to a non-vibration state as an electric signal (VIB_OUT signal 25 in FIG. 2). Note that, in the present embodiment, it is assumed that the electric signal VIB_OUT25 is output when it is detected that the state has changed from the vibration state to the non-vibration state.

The content storage unit 50 is a storage device represented by a hard disk or the like. The display information stored in the content storage unit 50 differs depending on the product or application to which the present embodiment is applicable.
In the case of a CD / MD player or the like, lyrics information can be considered, in the case of a mobile phone or the like, input telephone number information, and in the case of a navigator, map information including a place name, a shop name, and destination information can be considered. Although the present embodiment can be applied to a car navigator, a personal navigator that displays map information when a person walks in a town or shopping is more easily adapted. Therefore, the content storage unit 50 does not depend on the stored display information, but at least some character information content needs to exist.

The character font table storage unit 40 is a storage device such as a hard disk in which a display pattern as a font generation rule of display image data for each character is stored.

The content storage section 50 and the character font table storage section 40 are a kind of database, which is a tape system such as a magnetic tape or a cassette tape.
Disk systems of magnetic disks such as floppy disks and hard disks, optical disks such as CD-ROM / MO / MD / DVD, card systems such as IC cards (including memory cards) / optical cards, mask ROMs, EPROs
The storage medium may include a semiconductor memory such as an M, an EEPROM, a flash ROM, or the like.

FIG. 3 shows the data structure (font table (FONT) stored in the character font table storage unit).
It is a figure showing an example of TB)).

The character font table storage unit 40 is composed of three items: a character code 301, a font size 302, and a font pattern 303. The font size 302 is a plurality of font sizes, and the font pattern 303 is It stores font pattern data corresponding to the size. FIG.
In the case of, the character code 301 of each character is
Horizontal dot size is 8x8 font size (SIZE
1) Image data of small font 302a (IMG
1) Two types of image data (IMG2) 303b of a large font with a font size (SIZE2) 302b of 8x16 (vertical and horizontal) dot size are stored. In this embodiment, two types of font image data having different sizes are stored for individual characters. However, font image data of various sizes such as an outline font is calculated and calculated. It may be in a form that can be generated.

The display unit 30 may be any device as long as it can display the contents of the content. For example, CRT
LCD used in small devices
(A liquid crystal display device) or the like.

The display control unit 10 responds to the vibration detection information (signal VIB_OUT 25) output from the vibration detection unit 21 and the release button pressing information of the enlarged display release button 60.
Generate or select a character font pattern in the information to be displayed, generate display image information, and
A control unit that outputs the generated display image information to the display unit 30. The display control unit 10 may be, for example, a hardware form in which control is performed based on an electric signal level, or control is performed by an operation of a program in a ROM including a CPU and a RAM / ROM. It may be in the form of software.

The variable storage unit 11 stores variables and constants used in the display control unit 10, and secures a storage area for a variable (FONT_MD) indicating whether the display mode is the enlargement mode or the like. The variable storage unit 11 is a memory in which data can be electrically rewritten, for example, a RAM, an EEP
It may be composed of a ROM and a flash memory, or may be the storage medium described in the description of the content storage unit 50 and the character font table storage unit 40.

Although not shown, there are of course means for generating various font patterns from basic character patterns and means for generating display image information for displaying on a screen using the generated character font patterns. are doing. In addition, the character font table storage unit 40 may store only the basic pattern of the character, or may store in advance all the various font patterns generated from the basic pattern. Therefore, when all the various font patterns are stored in advance, a process may be used in which a font pattern required for display is selected from the character font table storage unit 40 and used. Further, when only the basic pattern is stored in the character font table storage unit 40, a target font pattern may be generated and used in each case.

FIG. 4 is a flowchart showing the operation of the display control unit.

The display control unit 10 is started by turning on the power of the main body of the apparatus, and initializes the value of a variable FONT_MD in a display mode indicating whether or not the display is enlarged to a normal display state (sets the variable FONT_MD to 0) (step S101),
It is checked whether or not a vibration detection signal VIB_OUT25 indicating that vibration has been detected is output from the vibration detection unit 21 (step S102).

When the vibration detection signal VIB_OUT 25 is output, it is checked whether or not the display mode is already in the enlarged display mode (step S103). If the result of the check is the enlarged display mode, the process returns to step S102, and the vibration detection signal VIB_OU
The output weight such as T is continuously monitored. On the other hand, if the result of the check is not the enlarged display mode, the character string of the content stored in the content storage unit 50 is obtained (step S104), and the character font table storage unit 4
0 large font (IMG2) data (for example, 3 in FIG. 3)
03b) (step S105), the display image data is generated and output to the display unit 30 (step S1).
06). Further, a variable FONT_ indicating the display mode state
The mode state is updated to the enlarged display mode with the value of MD set to 1 (step S107), and the vibration detection signal VIB_ is again
OUT or other output weight monitoring step (step S10
Return to 2).

In step S102, if there is no output of the vibration detection signal VIB_OUT, it is checked whether or not the enlarged display release button 60 has been pressed (step S108). If the press is not detected, step S1
02, the output weights such as the vibration detection signal VIB_OUT and the like are continuously monitored. If a press is detected,
It is checked whether the display is in the normal display mode (step S109). If the result of the check is the enlarged display mode, the process returns to step S102, and the vibration detection signal VIB_OU
The output weight such as T is continuously monitored. On the other hand, if the result of the check is not the enlarged display mode, a character string of the content stored in the content storage unit 50 is obtained (step S110), and the character font table storage unit 4
0 small font (IMG1) data (for example, 3 in FIG. 3)
03a) (step S111), display image data is generated and output to the display unit 30 (step S1).
12). Further, a variable FONT_ indicating the display mode state
The MD value is initialized to 0, the mode state is updated to the normal display (step S113), and the process returns to the output weight monitoring step for the vibration detection signal VIB_OUT and the like (step S102).

In this embodiment, the enlarged display is released when the user presses the enlarged display release button 60. In this case, the vibration detection unit 21 may also detect non-vibration and automatically cancel the enlarged display according to the output of the detection. However, the automatic state means that the user has an unexpected timing. On the contrary, the problem that the displayed content is very difficult to see is considered.

In the present embodiment, the case where "the display is automatically enlarged when a vibration is detected" is described.
The display may be “reduced display automatically when non-vibration is detected”. That is, “transition from vibration state to non-vibration state”,
Alternatively, one of “Transition from non-vibration state to vibration state” is automatically performed, and the other is operated by the user.
It is desirable to perform a switching display process.

FIG. 5 is a schematic diagram of logic for generating display image data from individual font image data. The content character string “Today's weather is generally sunny. Is an example of a display during normal operation and during vibration.

FIG. 5A shows a display example in a normal state, in which the number of pixels in the horizontal direction (the number of display dots) of the display device (corresponding to the display section 30 in FIG. 1) is 100 dots, the pitch between characters is 2 dots,
This indicates that the font size of the character is 8 × 8 dots and the font size of the punctuation space character is 8 × 8 dots. FIG. 5B is a display example of the enlarged display in which the vibration is detected. The pitch between the characters is 4 dots, the font size of the character is 16 × 16 dots, and the font size of the punctuation space character is 8 × in the enlarged display. This indicates that 16 dots are used.

The sizes of such large and small fonts are determined by the variables SIZE1, S in the character font table storage unit 40.
The value of SIZE2 is used, but it should be noted that there is a difference in the horizontal font size between the normal character and the punctuation space character at the time of enlarged display.

The target characters are mainly text,
It is intended for delimiters for separating phrases, words, and the like. For example, punctuation or space, "・" (middle point)
And symbolic characters such as “:” (colon) (“,”, “.”, “,” “.”, “;”, “:”,
“•”, “/”, “”). This is because the size of the character that has little effect on the display content and the character that represents the character break is displayed smaller than the size of the normal character, so that the displayed text can be displayed even on a small display screen. It is easy to read and can display as many characters as possible. Note that these processes are executed by the display control unit 10 instructing a display image generating unit (not shown) for generating display image information from a character font pattern for each character.

FIG. 6 shows an example in which the display state of FIG. 5 is displayed on a display device with a vibration detecting function.

An example of a normal display of FIG. 5A is displayed on the display unit 30 of FIG. 6A, and the vibration of FIG. 5B is detected on the display unit 30 of FIG. 6B. A display example at the time of enlarged display is displayed. Note that, here, arrows are described so as to shift from normal display to enlarged display when vibration is detected. Also, the display state is changed from the enlarged display state of (b) to (a).
In order to return to the normal display state, the user can operate the enlargement release button 60 as the illustrated display release designation means.

FIG. 7 shows a display state when the display device with the vibration detecting function is applied to a navigation system. (A) shows a display example of the normal state on the display unit 30, and (b) shows a display example after the vibration is detected on the display unit 30. Note that, in these figures as well, in order to return the display state from the enlarged display state of (b) to the normal display state of (a), an enlargement release button 60 is provided as display release designation means.

The navigator does not display contents consisting only of character data, but displays contents composed of images and character data, and only changes the rules for generating display image data. That is, the present invention can be applied to any content including any character data.

In FIG. 7B, in the presence of various character data such as names of places, roads, rivers, and buildings (stores, buildings, etc.), the current position and the purpose are set so that the user can easily understand. The display in the enlarged character size is applied to the display of the character data of the ground. This means that if you zoom in on the names of all places, roads, rivers, and buildings (stores, buildings, etc.)
This is for avoiding complicated display contents.
However, this is only an example. For example, if the current point and the destination are too far apart, a method of enlarging and displaying the names of places, roads, rivers, and buildings (shops, buildings, etc.) serving as landmarks between them. It may be. In order to enlarge and display only specific data among the names of places, roads, rivers, and buildings (shops, buildings, etc.) without enlarging the names of the map information in the map database, Data and character data such as names of places, roads, rivers and buildings (shops and buildings, etc.) are linked based on position information (latitude and longitude), and attribute information items of display form are provided in the character data. It is desirable that the configuration be as follows. By using this data configuration, for example, not only the departure place, the destination, and the current location, but also the name of a specific area (included within a certain latitude and longitude) can be enlarged and displayed. I do.

FIG. 8 is a flowchart for explaining the operation when the display device with the vibration detecting function shown in FIG. 7 is applied to a navigation system. The flow of the processing is basically the same as that of the flowchart of FIG. 4 described above, and only different parts will be described. In step S204,
Acquires the destination and the place name near the current location from the database. In step S206, display image data for displaying the obtained font pattern on the map image is generated and output. In step S210, a place name near the destination and the current position is acquired from the database. In step S212, display image data for displaying the acquired font pattern over the map image is generated and output. That is, the difference is that in the case of FIG. 4, only the text data is displayed, but in the case of FIG. 8, the image data of the map and the text data such as place names are mixed. This is because it is displayed.

In the above description, the display size has been described in two types, large and small, that is, enlarged and normal. However, it may be large and medium and small, that is, three types of enlarged, normal and reduced. May be set as normal, first reduction and second reduction, or second expansion and first purchase, and may be three or more types. These settings can be arbitrarily set by the user. (Second Embodiment) In the above-described first embodiment, the description has been made with respect to vibration as an external factor, but here, other factors will be conceptually described. FIG. 9 is a block diagram illustrating an example of a functional configuration of a display device with an external factor detection function when the vibration detection unit in FIG. 1 is replaced with an external factor detection unit. <1> When the external factor is sound The external factor detecting unit 20 in FIG. 9 corresponds to a sound detecting unit that detects a sound. Here, the sound detector is used to make a judgment to enlarge the display based on the loudness of the surrounding noise or to keep the normal display, etc., from a microphone or a sound sensor with a sound collection function. It shall be configured. For example, if the sound around you feels loud, it is enlarged and displayed.
If it is quiet, the display is normal. Also, the reverse pattern may be used. Further, a plurality of display size patterns may be provided in accordance with the loudness level of the sound, and the display size patterns may be applied. That is, the vibration in the first embodiment can be applied as it is by replacing it with sound. <2> When the external factor is brightness The external factor detection unit 20 in FIG. 9 corresponds to an illuminance detection unit that detects brightness. The illuminance detector detects the ambient brightness (illuminance)
Based on this, a determination is made for enlarging the display or keeping the normal display, and it is assumed that the display is constituted by a light detection sensor. For example, when the surrounding brightness feels bright, the normal display is used to see a lot of information, and when it feels dark, the display is enlarged to make it easier to see. Also, the reverse pattern may be used. Further, a plurality of display size patterns may be provided according to the brightness level, and the display size patterns may be applied. That is, it can be applied as it is by replacing the vibration in the first embodiment with the brightness.

As described above, in the first and second embodiments,
Each of the external factors has been individually defined and described.
However, the external factor detection unit 20 shown in FIG. 9 does not correspond to one external factor, and is a unit having two detection functions of vibration detection and sound detection, and vibration detection and illuminance detection. Is also good. For example, at the time of shipment of a product, a detection means capable of coping with a plurality of external factors is provided, and in actual use, the user uses the provided setting means to set the external factor detection means to be used. A configuration for selecting and setting may be used.

From the contents of the first and second embodiments, the display device of the present invention has a detection function for detecting an external factor at the time of using the device. The font size of characters can be automatically generated and displayed. Further, the external factor may be vibration, sound, brightness, or other environmental information.

For example, when the external factor is vibration,
The non-vibration state is determined to be the normal use state, and when the vibration occurs, the character font is displayed larger than in the normal use state, so that the display contents can be easily determined. Conversely, the vibrating state is determined to be in the normal use state, and the character font is displayed smaller than in normal use when not vibrating, so that the amount of display information in the same display area is increased and the information list can be grasped or the contents can be grasped. The whole picture can be grasped. In addition, by defining either the vibration state or the non-vibration state as a normal state, a means for canceling display processing accompanying vibration / non-vibration detection is provided, and the operation for shifting to the normal state is performed manually. Can be intentionally canceled, thereby making it possible to prevent the display contents from being randomly changed, thereby suppressing the viewability. In addition, by providing a font generation rule that has a different font size for each character, it is possible to suppress a decrease in the amount of information in one page by displaying large characters. Become. Note that these characteristics can be applied not only to the case where the vibration is targeted but also to the case where the characteristic is applied to other external factors such as sound and brightness.

The contents of the above-described embodiments are not limited to the contents described above unless the gist of the present invention is changed.

[0049]

According to the display device with an external factor detecting function of the present invention, the following effects can be obtained.

The display device with the external factor detecting function of the present invention can automatically generate and display the font size of the character according to the use situation. Furthermore, the external factor may be vibration, sound,
It may be brightness or other environmental information.

For example, when the external factor is vibration,
The non-vibration state is determined to be the normal use state, and when the vibration occurs, the character font is displayed larger than in the normal use state, so that the display contents can be easily determined. Conversely, the vibrating state is determined to be in the normal use state, and the character font is displayed smaller than in normal use when not vibrating, so that the amount of display information in the same display area is increased and the information list can be grasped or the contents can be grasped. The whole picture can be grasped. In addition, by defining either the vibration state or the non-vibration state as a normal state, a means for canceling display processing accompanying vibration / non-vibration detection is provided, and the operation for shifting to the normal state is performed manually. Can be intentionally canceled, thereby making it possible to prevent the display contents from being randomly changed, thereby suppressing the viewability. Note that these characteristics can be applied not only to the case where the vibration is targeted but also to the case where the characteristic is applied to other external factors such as sound and brightness.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an example of a functional configuration of a display device with a vibration detection function according to the present invention.

FIG. 2 is a conceptual diagram illustrating an example of a conceptual configuration of a vibration detection unit of the display device with a vibration detection function according to the present invention.

FIG. 3 is a diagram illustrating an example of a data configuration stored in a character font table storage unit of the display device with a vibration detection function according to the present invention.

FIG. 4 is a flowchart illustrating an operation of a display control unit of the display device with a vibration detection function according to the present invention.

FIG. 5 is a diagram showing an example of a data layout on a display screen during normal / vibration according to the present invention.

FIG. 6 shows a display device with a vibration detection function according to the present invention in a normal state /
FIG. 9 is a diagram showing an example of a screen display at the time of vibration.

FIG. 7 is a diagram showing a display example when the display device with a vibration detection function of the present invention is applied to a navigation system.

FIG. 8 is a flowchart illustrating an operation when the display device with a vibration detection function of the present invention is applied to a navigation system.

FIG. 9 is a block diagram illustrating an example of a functional configuration of a display device with an external factor detection function according to the present invention.

[Explanation of symbols]

 Reference Signs List 10 display control unit 11 variable storage unit 20 external factor detection unit 21 vibration detection unit 30 display unit 40 character font table storage unit 50 content storage unit 60 enlarged display release button

Claims (5)

[Claims] 1. A font pattern generating unit capable of generating a plurality of types of display character fonts, a font pattern storage unit storing the character font, and a display image generating unit generating a display image from the character font. A display device for outputting and displaying the display image, comprising: an external factor detection unit configured to detect an external factor from an environment in which the main unit is used; When a specific factor is detected,
Determining a characteristic of the detected external factor; selecting a character font pattern different from the character font pattern currently being displayed from the font pattern storage based on a result of the determining means; Display control means for generating a display image from the displayed character font by the display image generation means, and displaying the generated display image on the display means. Display with function. 2. A basic pattern storing means for storing a basic pattern of a character, a font pattern generating means capable of generating a plurality of types of display character fonts based on the basic pattern, and a display image from the character font. A display device comprising: a display image generating means for generating; and a display means for outputting and displaying the display image, wherein: an external factor detecting means for detecting an external factor from an environment in which the main body device is used; When an external factor is detected by the local factor detection means,
Judgment means for judging the characteristic of the detected external factor, and based on the result of the judgment means, the font pattern generation means generates a character font pattern different from the currently displayed character font pattern. Display control means for generating a display image from the generated character font by the display image generating means, and displaying the generated display image on the display means. Display device with detection function. 3. When the display image generating means generates a display image from a character font, if the target data is a delimiter, the display control means sets the delimiter to a size different from that of ordinary characters. The display device with an external factor detection function according to claim 1, wherein the generation is instructed by the display image generation unit to generate the image. 4. When the display control means causes the display means to display a display image based on a character font pattern different from the character font pattern currently being displayed based on a result of the determination means, the display is performed. 3. The display device with an external factor detection function according to claim 1, further comprising a display canceling designation unit for returning the display state to the original display state. 5. The external factor detection device according to claim 1, wherein the external factor detection means detects at least one of external factors including vibration, sound, and brightness. Display with function.