JP4345631B2 - Portable display device, display control method, and program - Google Patents

Description

  The present invention relates to a portable display device, a display control method, and a program that include an information display unit that displays information using power and can be switched to a power saving mode that suppresses power consumption in the information display unit and the like.

2. Description of the Related Art Conventionally, there is a portable display device including an information display unit that displays information with electric power, such as a cellular phone including a liquid crystal panel with a backlight.
Such a portable display device has a function of switching to a power saving mode for turning off an information display unit or a key illumination unit for illuminating a key, which consumes a large amount of power, in order to reduce power consumption and extend battery driving time as much as possible. There is something.

With regard to such a device, in Patent Document 1, the incoming LED is blinked when waiting for a power-saving state so that the user can recognize the power-on state.
JP 2003-134039 A

  However, in the above-described conventional portable display device, the information display unit is turned off as the power saving mode, so that it is difficult for the user to distinguish between the power-off state and the power saving mode state.

Moreover, although the thing of the patent document 1 mentioned above is a suitable thing which can recognize this distinction, information, such as the present time information and radio wave level information which were displayed on the information display part at the time of the normal mode which is not a power saving mode. The problem of not being able to see was left.
To deal with this problem, for example, conventional mobile phones have taken measures such as displaying on the back sub-liquid crystal, but the power consumption of the sub-liquid crystal is slightly larger and smaller than the main information display unit. There was a problem that the mobile phone of the type cannot be seen when it is in the power saving mode in the open state.

  The present invention has been made in view of such a situation, and notifies that the power saving mode is set instead of turning off the power while minimizing power consumption, and at the same time, useful information such as the current time, for example. It is an object of the present invention to provide a portable display device, a display control method, and a program that can notify a user of the above.

In order to achieve this object, a portable display device as a first aspect of the present invention includes information display means for displaying information by power and input means including numeric keys, and each numeric key is individually provided. Control means capable of controlling the power-saving mode for controlling the operation of the portable display device and reducing the power consumption by the information display means, wherein the individual illumination means for illuminating is provided for each numeric key. And the control means displays information of current time information by controlling turning on / off of the individual illumination means in the power saving mode.

Control means noted above, when the current time information, by lighting the individual lighting means disposed relative number key that corresponds to the partial sequence to display the current time information desirable.

  The above control means uses numeric keys corresponding to the tenth digit of the hour, the digit of the hour, the digit of the tenth of the minute, and the digit of the minute for the hour and minute in the current time information of the 24-hour system. It is preferable to display the current time information by sequentially turning on the individual illumination means arranged on the display.

  When the control means described above displays the current time information by sequentially turning on the individual lighting means, a first turn-off time is provided between the lighting of one individual lighting means and the lighting of the next individual lighting means. It is preferable.

  In the case where the power saving mode is further continued after displaying the current time information by sequentially turning on the individual lighting means, the above-described control means again turns on the individual lighting after the second turn-off time has elapsed from the current time information display. It is preferable that the current time information display by sequentially turning on the means is controlled to be repeated, and the second turn-off time is longer than the first turn-off time.

The control means described above may display a radio wave reception level as an information display.
Preferably, the control means displays the radio wave reception level by turning on the individual illumination means provided for the numeric key corresponding to the current radio wave reception level for a predetermined time.

The control means described above may display the remaining battery level as information display.
The control means described above preferably displays the remaining battery level by turning on the individual illumination means provided for the numeric key corresponding to the current remaining battery level for a predetermined time.

  In the power saving mode described above, it is preferable that the power consumption by the information display means is turned off, and the information display described above is performed by lighting the individual illumination means one by one.

  The control means controls to enter the power saving mode when no input is made from the above input means for a predetermined period of time or longer, and immediately returns to the normal mode when any input is made from the input means. It is preferable to control such that

The display control method according to the second aspect of the present invention includes information display means for displaying information by electric power and input means including numeric keys, and individual illumination means for individually illuminating each numeric key. A display control method for a portable display device arranged for each numeric key, which reduces power consumption by the information display means when no input is made from the input means for a predetermined time or more. It is characterized by comprising a mode switching step for setting the power mode, and an information display step for displaying information on the current time information by controlling turning on / off of the individual illumination means in the power saving mode.

Above noted information display step, when the current time information, it is preferable to display the current time information by sequentially lighting the disposed the individual lighting means with respect to numeric key corresponding to the minute.

  In the information display process described above, the numeric keys corresponding to the tenth digit of the hour, the digit of the hour, the digit of the tenth of the minute, and the digit of the minute for the hour and minute in the current time information in the 24-hour system. It is preferable to display the current time information by sequentially turning on the individual illumination means arranged for.

  In the information display step described above, when displaying the current time information by sequentially turning on the individual lighting means, the first turn-off time is set between the lighting of one individual lighting means and the lighting of the next individual lighting means. It is preferable to provide it.

  In the information display step described above, when the power saving mode is further continued after the current time information is displayed by sequentially turning on the individual illumination means, the individual lighting unit is again individually turned on after the second turn-off time has elapsed from the current time information display. It is preferable that the current time information display by sequentially turning on the illumination means is repeated, and the second turn-off time is longer than the first turn-off time.

In the information display step described above, the reception level of radio waves may be displayed as information display.
In the information display step described above, it is preferable to display the radio wave reception level by lighting the individual illumination means provided for the numeric key corresponding to the current radio wave reception level for a predetermined time.

In the information display step described above, the remaining battery level may be displayed as information display.
In the information display step described above, it is preferable to display the remaining battery level by turning on the individual illumination means provided for the numeric key corresponding to the current remaining battery level for a predetermined time.

  In the mode switching step described above, it is preferable that the power consumption by the information display unit is turned off as the power saving mode, and the above information display is performed by lighting the individual illumination units one by one.

  When any input is made from the input means during the above information display process, it is preferable to immediately return to the normal mode.

The display control program according to the third aspect of the present invention includes information display means for displaying information by power and input means including numeric keys, and individual illumination means for individually illuminating each numeric key. A display control program for a portable display device arranged for each numeric key, wherein the computer displays power consumption by the information display means when no input is made from the input means to the computer for a predetermined period of time. A mode switching process for reducing the power saving mode and an information display process for displaying information on the current time information by controlling turning on / off of the individual illumination means in the power saving mode are executed.

In the information display process noted above, when the current time information, it is preferable to display the current time information by sequentially lighting the disposed the individual lighting means with respect to numeric key corresponding to the minute.

  In the information display processing described above, numeric keys corresponding to the tenth digit of the hour, the digit of the hour, the digit of the tenth of the minute, and the digit of the minute for the hour and minute in the current time information in the 24-hour system. It is preferable to display the current time information by sequentially turning on the individual illumination means arranged for.

  In the information display process described above, when displaying the current time information by sequentially turning on the individual lighting means, the first turn-off time is set between the lighting of one individual lighting means and the lighting of the next individual lighting means. It is preferable to provide it.

  In the information display process described above, when the power saving mode is further continued after the current time information is displayed by sequentially turning on the individual lighting means, the individual lighting unit is again turned on after the second turn-off time has elapsed from the current time information display. It is preferable that the current time information display by sequentially turning on the illumination means is repeated, and the second turn-off time is longer than the first turn-off time.

In the information display process described above, the reception level of radio waves may be displayed as information display.
In the information display processing described above, it is preferable to display the radio wave reception level by turning on the individual illumination means provided for the numeric key corresponding to the current radio wave reception level for a predetermined time.

In the information display process described above, the remaining battery level may be displayed as the information display.
In the information display process described above, it is preferable to display the remaining battery level by turning on the individual illumination means provided for the numeric key corresponding to the current remaining battery level for a predetermined time.

  In the mode switching process described above, it is preferable that the power consumption by the information display unit is turned off as the power saving mode, and the above information display is performed by lighting the individual illumination units one by one.

  When any input is made from the input means during the information display process described above, it is preferable to immediately return to the normal mode.

  As described above, according to the present invention, it is notified that the power saving mode is set instead of turning off the power while minimizing power consumption, and at the same time, useful information such as the current time is notified to the user. be able to.

Next, an embodiment in which a mobile display device, a display control method, and a program according to the present invention are applied to a mobile phone will be described in detail with reference to the drawings.
First, an outline of the present embodiment will be described.

In the present embodiment, a hardware such as a CPU is used as a power saving state display means for indicating a display OFF state and a power OFF when a power saving function of a display unit is used in a small portable terminal such as a mobile phone having a power saving function. It is characterized by providing software that functions as a key illumination control means.
This key illumination control means illuminates the corresponding number using an individual illumination unit of a number key that can individually illuminate numerical information such as time at a fixed time interval, while using the power saving function, It realizes the notification of the minimum necessary numerical information. By performing such an operation, it is possible to display information such as current time information with a minimum current consumption without using a display unit with a large current consumption.

[First Embodiment]
Referring to FIG. 1, a mobile phone 100 according to a first embodiment of the present invention is shown.
As shown in FIG. 2, the mobile phone 100 according to the present embodiment includes a control unit 101 that controls the operation of the entire mobile phone 100, a display unit 102 such as a liquid crystal display, and a display that illuminates the display unit 102 such as a backlight. Various inputs such as an illumination unit 103, a wireless unit 104 that performs wireless communication with the outside of the apparatus, a clock unit 105, a storage unit 106 such as a ROM or a nonvolatile RAM, and numeric keys 108 (108a, 108b,...) Are performed. And an individual key illumination unit 107 (107a, 107b,...) That is incorporated in each numeric key 108 as shown in FIG. 3 and illuminates the numeric key.
The display unit 102 and the display illumination unit 103 described above function as an information display unit that performs information display using power.

Here, a numeric key is a numerical value assigned to a key by selecting and pressing any one key by assigning one button (key) to each number from 0 to 9. It is comprised so that it can input.
The mobile phone according to the present embodiment includes this numeric key as input means for receiving an operation input from the outside, and various publicly known mobile phones such as a menu key for calling various function screens and a mail key for mail. The configuration may include an operation unit.

  As described above, the cellular phone 100 according to the present embodiment stores software (program 106 a) that causes hardware such as a CPU to function as control means (control unit 101) for key individual illumination in the storage unit 106. When the user does not operate the cellular phone 100 at all for a certain period of time, the control unit 101 turns off the display of the display unit 102 in order to suppress current consumption, and stops the illumination of the display illumination unit 103 and the key individual illumination unit 107 as a whole. To do.

  After the stop, in order to notify the user of the power saving mode, the control unit 101 performs information notification by turning on only the illumination of the corresponding numeric keys for information using numerical values such as the current time from the clock unit 105. That is, the control unit 101 turns on only the key individual illumination unit 107 of the corresponding numeric key for information display at a certain time interval so as to save power than when the display unit 102 is used. Along with the information notification, it is notified by the very small power consumption that the power saving mode is set instead of turning off the power.

  As shown in FIG. 3 described above, the key individual illumination unit 107 is provided as a lighting element such as one or more LEDs for each numeric key 108, and only numeric keys that are to be lit for information display. It is configured so that the user can easily recognize that it is lit.

  The mobile phone 100 realizes functions known as a mobile phone such as a telephone function and a mail function when the wireless unit 104 performs wireless communication with a base station or the like under the control of the control unit 101 during normal use. During this normal use (when the power is turned on in an operation mode other than the power saving mode), the display unit 102, the display illumination unit 103, and all the key individual illumination units 107 are turned on under the control of the control unit 101, and are visible to the user. Provides a good interface.

Next, an operation in the power saving mode in the mobile phone 100 as the present embodiment will be described with reference to FIGS. 4, 5, and 6.
When a predetermined condition such that no external operation input is performed for a predetermined time or more is satisfied, the power saving mode is started, and the control unit 101 stops the display of the display unit 102 of the mobile phone 100 and displays illumination. The unit 103 and the key individual illumination unit 107 are all turned off and controlled to suppress power consumption (step S1).

  As the key illumination control, the control unit 101 realizes the power saving state notification and the time information notification by lighting at a constant interval that does not increase the current consumption. ; Waits for the lighting on timing every second turn-off time) (step S2), obtains the current time information of the 24-hour system from the clock unit 105, and first of all, based on the obtained current time information Only the key individual illumination unit 107 of the number corresponding to the tens digit is turned on for a predetermined time (step S3).

Then, considering the case where the same number continues, after turning off the light for a certain time shorter than the lighting time of the 10-digit number (inter-digit light-off time; first light-off time), then it corresponds to the first digit of the time Only the numerical key individual illumination unit 107 to be turned on is turned on for a predetermined time (step S4).
Next, similarly, the light is turned off for the above-mentioned turn-off time between numbers, and then only the key individual illumination unit 107 of the number corresponding to the tenth digit of the minute is turned on for a certain time (step S5). Similarly, the light is turned off for the above-described turn-off time, and then only the key individual illumination unit 107 of the number corresponding to the minute digit is turned on for a predetermined time (step S6).

  When the power saving mode is still continued after the series of time information lighting display is completed, the control unit 101 is configured to notify at the time of time notification in order to make it possible to understand the separation of information and to realize low power consumption. After waiting for a certain time longer than the lighting interval (light-off time between displays), the same lighting operation is repeated.

For example, in the case of the case of 2:45 pm, the series of time information lighting display described above as steps S3 to S6 is “1”, “4”, “4” as 24-hour time information as shown in FIG. In the order of “5”, the lights are sequentially turned on while sandwiching the turn-off operation of the turn-off time between numbers. The timing is illustrated in FIG.
By lighting up in this way, for example, when two overlapping displays such as “1”, “4”, “4”, and “5” are displayed, they are lit twice instead of being lit for a long time. This can be shown to the user in an easy-to-understand manner, and the current time information can be reliably notified.

  Further, at the same time when the processing as the power saving mode shown in FIG. 4A is started, the power saving mode monitoring processing shown in FIG. 4B is started to control whether or not the power saving mode is continuing. The unit 101 always monitors (step S7). That is, the above-described processing as the power saving mode shown in FIG. 4A and the power saving mode monitoring processing shown in FIG. 4B are simultaneously executed in parallel, and the power saving mode shown in FIG. During execution of the process, the control unit 101 always monitors in the background whether or not the power saving mode is terminated due to some operation input from the outside.

  In this power saving mode monitoring process, when a state where the power saving mode should be terminated is detected, for example, when some external operation input is performed, the normal mode (operation mode other than the power saving mode) is immediately started from any state. Return.

  As described above, this embodiment includes a mobile phone with a display function having an individual illumination function of numeric keys and software installed therein, and the software realizes the individual illumination function of numeric keys and displays a current saving state. Further, the key individual illumination unit 107 (107a, 107b,...) Is used to display the minimum necessary information, and the current consumption for display control is minimized.

  As described above, according to the present embodiment, the operation unit 108 is used to turn off the power consumption of the information display unit by the display unit 102 and the display illumination unit 103 in the power saving mode and indicate the power saving mode state in that state. By controlling the turning on / off of the individual lighting of the numeric keys in, not only simple power saving mode status notification, but also realizes power saving status and at the same time notifies the user of the minimum necessary numerical information such as the current time Can be realized.

  In the first embodiment described above, it is described that the lighting control of the key individual illumination unit 107 is performed at regular time intervals. However, the present invention is not necessarily limited to regular time intervals, for example, between hours and minutes. The interval may be longer than the interval between the tenth digit and the first digit.

  In addition, each key individual illumination unit 107 has been described as having one type of lighting method for each number. However, the lighting method is not necessarily limited to one type of lighting. For example, the lighting can be performed with two or more colors. You may make it light simultaneously, changing a color with a digit and one digit.

[Second Embodiment]
Next, a mobile phone as a second embodiment of the present invention will be described. In the second embodiment, the mobile phone 100 according to the first embodiment described above notifies the radio wave level information indicating the radio wave reception level instead of notifying the time information in the power saving mode. It is what you do. Other parts are the same as those in the first embodiment described above, and a description thereof will be omitted.

The operation of the mobile phone as the second embodiment will be described with reference to the flowchart of FIG.
When a predetermined condition such that no external operation input is performed for a predetermined time or longer is satisfied, the power saving mode starts, and the control unit 101 controls the display unit 102 as in the first embodiment described above. The display is stopped, the lighting of all of the display illumination unit 103 and the key individual illumination unit 107 is stopped, and control is performed so as to suppress consumption of current consumption (step S11).

  As the key illumination control, the control unit 101 realizes the power saving state notification and the radio wave level information notification by lighting at a constant interval that does not increase the current consumption. Waiting for lighting on timing every time (step S12), radio wave level information is obtained from the radio unit 104, and only the key individual illumination unit 107 of the number corresponding to the obtained radio wave level information is lit for a certain period of time (step) S13).

  In this radio wave level information, the radio wave level indicated by display on the display unit 102 may be expressed as a number as it is, or another method may be used. When the radio wave level by display is expressed as a number as it is, for example, if the radio wave level is displayed by five levels of antenna marks, “0” is displayed when out of service area, and “1” if the radio wave level is one antenna mark. In the same manner, the number “2” is displayed when the antenna mark has two radio wave levels, and the numeral “5” is displayed when the antenna mark has five radio wave levels.

  After the radio wave level information lighting display is completed, if the power saving mode is still continued, the control unit 101 determines whether the information is separated and the power consumption mode is low. After waiting for (light-off time), the same lighting operation is repeated.

  Further, at the same time when the processing as the power saving mode shown in FIG. 7A starts, the power saving mode monitoring processing shown in FIG. 7B starts to control whether or not the power saving mode is continuing. The unit 101 always monitors (step S14). That is, the process as the power saving mode shown in FIG. 7A and the power saving mode monitoring process shown in FIG. 7B are executed in parallel at the same time, and the power saving mode shown in FIG. During execution of the process, the control unit 101 always monitors in the background whether or not the power saving mode is terminated due to some operation input from the outside.

  In this power saving mode monitoring process, when a state where the power saving mode should be terminated is detected, for example, when some external operation input is performed, the normal mode (operation mode other than the power saving mode) is immediately started from any state. Return.

  Thus, according to the second embodiment, in the power saving mode, an operation is performed to turn off the power consumption in the information display means by the display unit 102 and the display illumination unit 103 and indicate the power saving mode state in that state. By controlling on / off of individual lighting of the numeric keys in the unit 108, not only a simple notification of the power saving mode state but also a minimum required numerical information such as radio wave level information is realized at the same time as realizing the power saving state. It is feasible to notify

  In the second embodiment described above, the radio wave level information is notified by lighting in the power saving mode. However, the battery level information (remaining battery level information) may be used instead of the radio wave level information. Embodiments can be similarly realized.

Moreover, each embodiment mentioned above is a suitable embodiment of this invention, This invention is not limited to this, It can change variously based on the technical idea of this invention, and can be implemented.
For example, the display unit 102 has been described as a liquid crystal display or the like. However, the display unit 102 is not limited to this as long as it can be displayed by electric power, and may be, for example, an organic EL display (Organic Electroluminescence Display). Further, the display illumination unit 103 may be omitted as long as the display unit 102 can display information so that the information can be suitably viewed. That is, the display unit 102 alone may function as an information display unit.

Further, the input using the numeric keys is not limited to pressing when input is possible, and may be, for example, a touch type.
In addition, the number key provided with the key individual illumination unit may be in various forms as long as it is a key divided into numbers from 0 to 9, and is not limited to the embodiment described above.

  Further, the control unit 101 may be realized by processing hardware such as a CPU by a program, or may be realized by hardware such as a control circuit. Further, for example, a configuration in which a portion that performs illumination control is configured to be independent from other control units may be used.

  Further, the portable display device, the display control method, and the program according to the present invention applied to the cellular phone have been described above. However, the portable display device may include a numeric key and a key individual illumination unit for each numeric key. The present invention is not limited to this, and the present invention can be similarly applied to, for example, a portable terminal device such as a PDA (Personal Digital Assistant) or various portable electronic devices having a display function.

Further, by recording the processing procedure for realizing the mobile phone as each embodiment described above as a program (software) on a recording medium, the above-described functions according to each embodiment of the present invention are supplied from the recording medium. The program can be realized by causing a CPU of a computer constituting the apparatus or system to perform processing.
In this case, the present invention can be applied even when an information group including a program is supplied to the output device from the above recording medium or from an external recording medium via a network.
That is, the program code itself read from the recording medium realizes the novel function of the present invention, and the recording medium storing the program code and the signal read from the recording medium constitute the present invention. It will be.
As this recording medium, for example, a floppy (registered trademark) disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD-R, magnetic tape, nonvolatile memory card, ROM, EEPROM, or the like may be used.

  According to the program according to the present invention, each function in the mobile phone as each embodiment according to the present invention described above can be realized in the portable display device controlled by the program.

1 is a perspective view showing a mobile phone 100 as an embodiment of the present invention. 4 is a block diagram showing a configuration in control of the mobile phone 100. FIG. It is a conceptual diagram which shows arrangement | positioning of the key separate illumination part. It is a flowchart which shows the control procedure at the time of a power saving mode. It is a figure which shows the light emission state transition by the said control procedure at the time of a power saving mode. It is a figure which shows the lighting timing in this control procedure at the time of a power saving mode. It is a flowchart which shows the other control procedure at the time of a power saving mode.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 Mobile phone 101 Control part 102 Display part 103 Display illumination part 104 Radio | wireless part 105 Clock part 106 Memory | storage part 106a Program 107 (107a, 107b, ...) Key individual illumination part 108 Operation part 108a, 108b ... Numeric key

Claims (33)

Information display means for displaying information by electric power;
And input means including numeric keys,
An individual illumination means for individually illuminating each numeric key is a portable display device arranged for each numeric key,
Control means capable of controlling the operation of the portable display device and controlling to a power saving mode for reducing power consumption by the information display means;
The portable display device characterized in that the control means displays information of current time information by controlling turning on / off of the individual illumination means in the power saving mode. Wherein, when the current time information, according to claim 1, wherein the displaying the current time information by lighting the individual lighting means disposed relative number key that corresponds to the partial sequence Portable display device. For the hour and minute in the current time information of the 24-hour system, the control means is for numeric keys corresponding to the tenth digit of the hour, the digit of the hour, the digit of the tenth of the minute, and the digit of the minute. mobile display device according to claim 1, wherein the displaying the current time information by sequentially turned the individual illumination means disposed Te. The control means provides a first turn-off time between the lighting of one individual lighting means and the lighting of the next individual lighting means when displaying the current time information by sequentially turning on the individual lighting means. mobile display device according to claim 2 or 3, wherein the a. In the case where the power saving mode is further continued after displaying the current time information by sequentially turning on the individual lighting means, the control means again performs the individual lighting after a second turn-off time has elapsed from the current time information display. Control to repeat the current time information display by lighting the lighting means sequentially,
The second off time, the portable display device as claimed in claim 2 in any one of the 4, characterized in that longer than the first off time.   The portable display device according to claim 1, wherein the control means displays a reception level of radio waves as the information display. The control means according to claim 6, wherein the displaying the reception level of a radio wave by lighting the individual lighting means disposed relative number key that corresponds to the reception level of the current electric wave given time Portable display device.   The portable display device according to claim 1, wherein the control unit displays a remaining battery level as the information display. The said control means displays the remaining battery level by lighting the said individual illumination means arrange | positioned with respect to the number key applicable to the present remaining battery level for a predetermined time. 9. The portable display device according to 8 . In the power saving mode, the power consumption by the information display means is turned off,
The information display, a portable display device according to any one of claims 1 to 9, characterized in that by lighting one by one the individual lighting means. The control means controls to enter the power saving mode when no input is made from the input means for a predetermined period of time or longer, and immediately enters normal mode when any input is made from the input means. mobile display device according to any one of claims 1 to 10, characterized by controlling so as to return. Information display means for displaying information by electric power;
And input means including numeric keys,
A display control method in a portable display device in which individual illumination means for individually illuminating each numeric key is provided for each numeric key,
A mode switching step for setting a power saving mode for reducing power consumption by the information display means when no external input is performed from the input means for a predetermined time or more,
A display control method comprising: an information display step of displaying information on current time information by controlling turning on / off of the individual illumination means in the power saving mode. Wherein in the information display step, when the current time information, by lighting the individual lighting means disposed relative number key that corresponds to the partial sequence of claim 12, wherein the displaying the current time information Display control method. In the information display step, for the hour and minute in the current time information of the 24-hour system, the numeric key corresponding to the tenth digit of the hour, the digit of the hour, the digit of the tenth of the minute, and the digit of the minute 13. The display control method according to claim 12 , wherein the current time information is displayed by sequentially turning on the individual illumination means arranged on the display. In the information display step, when displaying the current time information by sequentially turning on the individual lighting means, a first turn-off time is set between the lighting of one individual lighting means and the lighting of the next individual lighting means. claim 13 or 14 display control method, wherein the provided. In the information display step, when the power saving mode is further continued after the current time information is displayed by sequentially turning on the individual illumination means, the second turn-off time is elapsed from the current time information display, and then again Repeat the current time information display by turning on the individual lighting means sequentially,
The second off time, the display control method according to any one of claims 13 to 15, characterized in that longer than the first off time. 13. The display control method according to claim 12 , wherein, in the information display step, a radio wave reception level is displayed as the information display. In the information displaying step, claim and displaying the received level of the electromagnetic wave by lighting the individual lighting means disposed relative number key that corresponds to the reception level of the current electric wave given time 17 The display control method described. The display control method according to claim 12 , wherein in the information display step, a remaining battery level is displayed as the information display. The battery remaining level is displayed in the information display step by turning on the individual illumination means provided for the numeric key corresponding to the current battery remaining level for a predetermined time. Item 20. The display control method according to Item 19 . In the mode switching step, power consumption by the information display means is turned off as a power saving mode,
The display control method according to any one of claims 12 to 20 , wherein the information display is performed by turning on the individual illumination units one by one. The display control method according to any one of claims 12 to 21 , wherein when any input is made from the input means during the information display step, the normal mode is immediately restored. Information display means for displaying information by electric power;
And input means including numeric keys,
A display control program for a portable display device in which individual illumination means for individually illuminating each numeric key is arranged for each numeric key,
On the computer,
A mode switching process for setting a power saving mode for reducing power consumption by the information display means when input from the outside is not performed from the input means for a predetermined time or more;
A display control program for executing information display processing for displaying information of current time information by controlling turning on / off of the individual illumination means in the power saving mode. Wherein the information display process, when the current time information, by lighting the individual lighting means disposed relative number key that corresponds to the partial sequence according to claim 23, characterized in that to display the current time information Display control program. In the information display process, for the hour and minute in the current time information of the 24-hour system, the number key corresponding to the tenth digit of the hour, the digit of the hour, the digit of the tenth of the minute, and the digit of the minute 24. The display control program according to claim 23 , wherein the current time information is displayed by sequentially turning on the individual illumination means arranged on the display. In the information display process, when displaying the current time information by sequentially turning on the individual lighting means, a first turn-off time is set between the lighting of one individual lighting means and the lighting of the next individual lighting means. The display control program according to claim 24 or 25 , wherein the display control program is provided. In the information display process, when the power saving mode is further continued after the current time information is displayed by sequentially turning on the individual illumination means, the second turn-off time is elapsed from the current time information display, and the information is displayed again. Repeat the current time information display by turning on the individual lighting means sequentially,
The second off time, the display control program according to any one of claims 24 to 26, characterized in that longer than the first off time. 24. The display control program according to claim 23 , wherein in the information display process, a reception level of radio waves is displayed as the information display. Wherein the information display processing, according to claim 28, characterized in that displaying the reception level of a radio wave by lighting the individual lighting means disposed relative number key that corresponds to the reception level of the current electric wave given time The display control program described. 24. The display control program according to claim 23 , wherein in the information display process, a remaining battery level is displayed as the information display. In the information display processing, the remaining battery level is displayed by turning on the individual illumination means provided for a number key corresponding to the current remaining battery level for a predetermined time. Item 30. A display control program according to Item 30 . In the mode switching process, power consumption by the information display means is turned off as a power saving mode,
The display control program according to any one of claims 23 to 31 , wherein the information display is performed by turning on the individual illumination means one by one. The display control program according to any one of claims 23 to 32 , wherein when any input is made from the input means during the information display process, the normal mode is immediately restored.

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