JP2003125060A - Foldable portable telephone, method and program for adjusting display brightness of the foldable portable telephone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress fluctuations in brightnesses which are different for different displays. SOLUTION: A foldable casing 1 has a folded-state detector 4 for detecting the folded state of the casing and a light sensor 5 opposed to a self-light- emitting display unit 2. A predetermined standard value is previously stored in a memory. A controller has a display function for photosensor correction of setting a screen of the display unit in a predetermined display state, when the casing is in the folded state, a photosensor output detection function of detecting the output value from the photosensor, a correction calculation function of calculating a correction to correct the output value of the photosensor by comparing the then detected output value with the stored standard value, and a brightness adjustment function of changing the brightness of the display unit, on the basis of an output value to ambient light from the photosensor and the calculated correction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foldable mobile phone, and more particularly to a foldable mobile phone equipped with a self-luminous display. The present invention also relates to a method and program for correcting the brightness of the display of a foldable mobile phone.

[0002]

2. Description of the Related Art In recent years, mobile phones have come to use self-luminous displays such as organic EL displays in order to reduce power consumption. In a mobile phone equipped with such a display, it is easy to change the brightness of the display, and the brightness of the display can be set and used depending on the owner or the place of use.

Further, conventionally, it is possible to mount a function of automatically changing the brightness according to ambient light by mounting an optical sensor. For example, in a place where the surroundings are judged to be bright, the brightness of the display can be increased to make it more visible. You can In this way, a mobile phone has been provided that is power-saving and has improved convenience in consideration of the user's viewability.

The output characteristics of the photosensors, which serve as a reference when adjusting the brightness as described above, vary from one photosensor to another. Therefore, in order to suppress such variations, adjustment is usually performed in a mobile phone manufacturing line by setting a correction value based on the output value of the optical sensor by making the standard light source and the optical sensor face each other. ing. Then, when the ambient light is detected by the optical sensor, the measured value of the ambient light is corrected according to the correction value, and the brightness of the display is changed based on this value.
In this way, variations in the characteristics of the optical sensor can be suppressed.

[0005]

However, in the above-mentioned method, although it is possible to correct the variation in the output value of the optical sensor itself, if there is variation in the brightness in the initial state of the display, the surroundings can be corrected. Even if the brightness value of the display is changed according to the light, it cannot be set to an appropriate value. That is, even if the brightness of the display is increased by a predetermined value because the ambient light is measured to be bright, if the brightness of the display is originally low, the brightness may not reach the intended brightness. Therefore, the brightness of the display of the mobile phone still varies, and it becomes difficult to set the display to an appropriate brightness corresponding to the ambient light. And, such a thing can also occur when the deterioration of the luminance due to the deterioration of the display over time occurs.

[0006]

It is an object of the present invention to improve the inconveniences of the above-mentioned conventional examples, and in particular, it is possible to automatically adjust the display state of the display so as to display at a brightness corresponding to ambient light while saving power. It is an object of the present invention to provide a foldable mobile phone capable of suppressing a variation in brightness that varies from display to display. Another object of the present invention is to provide a display brightness correction method and program for a foldable mobile phone.

[0007]

Therefore, according to the present invention, a foldable case, a self-luminous display and an operation section arranged on a folding surface of the case, and a command from the operation section are used. And a fold detection unit for detecting that the case is in a folded state, and a storage unit having a storage unit having a predetermined storage capacity. In the folded state, the self-luminous display is provided with an optical sensor section that faces the storage section, and the storage section stores a predetermined standard value to be compared with the output value from the optical sensor section for the self-luminous display. Further, the control unit sets the display of the self-luminous display to a predetermined display state when the folding detection unit detects that the casing is in the folded state, and an optical sensor correction display function, and the casing. Fold In the state where the self-luminous display is in a predetermined display state, an optical sensor output detection function that detects an output value from the optical sensor unit, and the output value detected at this time and the standard stored in the storage unit A self-luminous display based on a correction value calculation function for calculating a correction value for correcting the output value of the optical sensor section by comparing the output value with respect to the ambient light from the optical sensor section and the calculated correction value. And a brightness adjusting function for changing the brightness of (1).

With this structure, when the foldable mobile phone is folded, the display and the optical sensor section face each other, and the optical sensor section detects the brightness of the display. The detected output value is compared with a standard value preset in the storage unit, and a correction value according to the comparison result is calculated. This correction value is added to or subtracted from the output value of ambient light detected by the optical sensor unit when the mobile phone is subsequently opened. Then, the mobile phone adjusts the brightness of the display based on the output value and the correction value. Therefore, the display brightness is adjusted by adjusting the correction value based on the result of comparing the display brightness and the standard value to the output value of the ambient light. The brightness of the display can be automatically adjusted by suppressing the influence of the characteristics of.

Further, the optical sensor correction display function of the control unit controls the display state of the self-luminous display to a display state corresponding to the position of the optical sensor unit when it is detected that the housing is in the folded state. It is desirable to have a function of controlling to display only the portion facing the optical sensor section (claims 2 and 3). With this, when the display is used as a light source for correcting the light sensor, only the portion corresponding to the light sensor is displayed in the folded state of the mobile phone, and the display portion of the display is limited, Power saving can be achieved. Furthermore, by making the display state suitable for the optical sensor correction, such as displaying the portion in white, it is possible to ensure the correction and efficiency of the optical sensor correction.

The correction value calculation function of the control unit is
When comparing the output value from the optical sensor and the standard value,
When the standard value is higher, the brightness adjustment function sets a correction value so that the output value for the ambient light of the optical sensor part is corrected to a higher value, and when the standard value is lower, the brightness adjustment function surrounds the optical sensor part. It is desirable that the function is to set a correction value so that the output value for light is corrected low (claim 4).

As a result, the optical sensor is corrected in accordance with the brightness characteristic of each display. That is, if the original brightness of the display is low, the correction value is calculated so that the output value of the ambient light from the optical sensor is corrected to a higher value, or if the original brightness of the diplay is corrected to a lower value. To do. After that, the ambient light is measured according to the brightness of the display by adding or subtracting the correction value to the actual output value of the ambient light optical sensor, and the brightness is corrected according to the brightness characteristic. For example, in the case of a display that originally has low brightness, even if the actual output value of the optical sensor for ambient light is standard, the output value is corrected to a high value by the correction value, and the brightness of ambient light is brighter than standard. Is judged. At this time,
The display brightness is set higher. Therefore, it is possible to suppress the variation in the brightness of the display from the time of shipment or the variation due to aged deterioration while considering the visibility of the user.

Further, according to the present invention, there is provided a method of adjusting the brightness of a self-luminous display arranged in the casing of a foldable portable telephone by a command from a control unit for controlling the operation of the telephone itself. An optical sensor correction display step of setting the display of the self-luminous display to a predetermined display state when the folding detection unit provided in the housing detects that the folding mobile phone is in the folded state, A sensor output detecting step of detecting an output value from the optical sensor unit when the body is in a folded state and the self-luminous display is in a predetermined display state, and the detected output value at this time and the mobile phone are provided. A correction value calculating step of calculating a correction value for correcting the output value of the optical sensor unit by comparing the standard value stored in advance in the stored storage unit, and an output value for the ambient light from the optical sensor unit. Also provided is a display brightness adjusting method for a foldable mobile phone having a structure including a brightness adjusting step of changing the brightness of the self-luminous display based on the correction value issued (claim 5). ).

Further, the present invention is a program for controlling the operation of a control unit for controlling the operation of the self-luminous display arranged in the housing of the folding mobile phone so as to adjust the brightness of the self-luminous display. And a display process for correcting an optical sensor that sets the display of the self-luminous display to a predetermined display state when the folding detection unit provided in the housing detects that the folding mobile phone is in the folded state. A sensor output detection process of detecting an output value from the optical sensor unit when the housing is in the folded state and the self-luminous display is in a predetermined display state, the detected output value at this time, and the mobile phone. A correction value calculation process for calculating a correction value for correcting the output value of the optical sensor unit by comparing it with a standard value stored in advance in a storage unit provided in A brightness adjustment process for changing the brightness of the self-luminous display based on the output value and the calculated correction value, and a display brightness adjustment program for the foldable mobile phone that controls the operation of the control unit to execute the brightness adjustment process. It is provided (Claim 6). Even in this case, it is possible to achieve the above object by operating as described above.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a schematic diagram showing the configuration of a mobile phone. FIG. 2 is a block diagram showing a similar configuration. FIG. 3 is an explanatory diagram showing a display state of the display. 4 to 5 are flowcharts showing the operation of the mobile phone.

(Overall Structure) First, the structure of the portable telephone according to the present embodiment will be described with reference to FIGS.
As shown in FIG. 1 and FIG. 2, the mobile phone according to the present invention is a foldable housing composed of an upper housing 1A and a lower housing 1B which are openably and closably coupled by a hinge portion 1C. 1
It is a foldable mobile phone having. And the case 1
The self-luminous display 2 and the operation unit 3 are arranged on the folding surface. In particular, the upper housing 1A is provided with the self-luminous display 2, and the lower housing 1B is provided with the operation unit 3.

The housing 1 has a folding detection unit 4 for detecting that the housing 1 is in a folded state, and an optical sensor facing the self-luminous display 2 in a folded state of the housing 1. And part 5.

Further, inside the housing 1, a control unit 6 for controlling the operation of the telephone itself based on a command from the operation unit 3,
A storage unit 7 having a predetermined storage capacity is provided (see FIG. 2). Hereinafter, this will be described in detail.

(Self-luminous display) The self-luminous display 2 is a display which is controlled by the controller 4 and emits light by itself. For example, there is an organic EL display, which uses a material "itself emits light" by an electroluminescence effect when it is electrically stimulated. Therefore, the brightness of the display 2 itself, that is, the brightness of the display can be changed by a command from the control unit 4.

Here, the displays 2 should have the same light emission characteristics if they are the same product, but in reality, the brightness is different for each display, and variations occur. Therefore, even if the same display control is performed by the control unit 4, the brightness differs depending on the display. In addition, variations in luminance also occur due to deterioration over time.

(Folding Detection Unit) The folding detection unit 4 sends a predetermined signal to the control unit 4 when pressed, and the button unit 4
B and a protruding portion 4A that pushes the button portion 4B. The button portion 4B is provided in the lower housing 1B, and the projection portion 4A is provided in the upper housing 1A so that the projection portion 4A presses the button portion 4B when the housing 1 is folded. That is, the button portion 4B and the protrusion portion 4A are provided symmetrically with the hinge portion 1C. As a result, when the housing 1, that is, the mobile phone is folded, the button portion 4B is pressed by the projection portion 4A, and a predetermined signal is transmitted to the control portion 6. Then, the control unit 6 can detect that the housing 1 is folded as described later. However, the folding detection unit 4 is not limited to such a configuration. For example, it may be provided inside the hinge portion 1C and configured so that the switch is turned on and off at a predetermined angle.

(Optical Sensor Section) The optical sensor section 5 is a sensor for measuring the brightness of the light emitting body, and is provided at a predetermined location of the lower housing 1B. The optical sensor unit 5 detects the brightness around the optical sensor based on a command from the control unit 6. The housing 1 is provided at a position facing the display 2 so that the brightness of the display 2 can be measured when the housing 1 is folded.

(Storage Unit) The storage unit 7 is a storage medium which is provided inside the housing 1 and stores predetermined information based on a command from the control unit 6. Specifically, ROM7A and RA
It is composed of M7B. ROM7A is EPR
It may be a rewritable ROM such as OM. RA
M7B may be a register in the control unit 6 described later.

The ROM 7A stores a predetermined standard value to be compared with the output value from the photosensor section 5 for the self-luminous display 2. The standard value is a theoretical value or an experimental value that can be detected by the optical sensor unit 5 when the self-luminous display 2 is caused to emit light with a predetermined brightness and the housing 1 is folded. Therefore,
By design, all phones should be able to detect the standard value, but the brightness of the display 2 varies as described above, and therefore may differ from phone to phone.

Further, the ROM 7A stores a standard ambient light standard value which is a predetermined standard luminance value of ambient light. That is, it is a value set as a general value as the brightness value of the ambient light detected by the optical sensor unit 5 when the foldable mobile phone is opened and used.
For example, it may be the brightness obtained by the photo sensor unit 5 outdoors, which is most often used. Then, as will be described later, the brightness of the display 2 is adjusted based on this value.

The ROM 7A also stores predetermined data such as the cell phone number of another person. Thus, basically, the description of the same parts as those of a general mobile phone will be omitted.

(Control Unit) The control unit 6 is a CPU which is housed in the housing 1 and has a predetermined arithmetic processing capability.
The control unit 6 has the functions of a general mobile phone. For example, it has a function of displaying information input to the operation unit 3 on the display 2 and a call function. Since this is the same technique as the conventional technique, its description is omitted.

Further, the control unit 6 sets the display of the self-luminous display 2 to a predetermined display state when the folding detection unit 4 detects that the housing 1 is in the folded state. A display function, an optical sensor output detection function of detecting an output value from the optical sensor unit 5 when the housing 1 is in the folded state, and the self-luminous display 2 is in a predetermined display state, A correction value calculation function for calculating a correction value for correcting the output value of the optical sensor unit 5 by comparing the output value with the standard value stored in the storage unit 7, and the output value for the ambient light from the optical sensor unit 5. And a brightness adjusting function for changing the brightness of the self-luminous display 2 based on the calculated correction value.

The optical sensor correction display function is a function that operates as follows. First, the button section 4 of the fold detection section 4
A predetermined signal emitted from the folding detection unit 4 when B is pressed, that is, a signal notifying that the housing 1 has been folded is received. Then, when receiving this signal, the display of the self-luminous display 2 is changed to the correction display. For example, as shown in FIG. 3, when the housing 1 is folded, only the position facing the light receiving portion of the optical sensor portion 5 provided in the lower housing 1B emits light, and the light source 2A of the optical sensor portion 5 concerned. The display state of the display 2 is controlled so that The shape of the light source 2A is as shown in FIG.
The shape of the square is almost the same as the shape of the light receiving portion of. And
At this time, the light source 2A portion of the display 2 displays white, and the other portions display black, that is, do not emit light. However, such a display is an example, and the present invention is not limited to such a display. Here, FIG. 3 is an explanatory diagram showing a state in which the display of the self-luminous display 2 is changed for correcting the optical sensor.

The optical sensor output detection function is a function that operates as follows. First, as described above, it is detected that the housing 1 is folded, the display of the display 2 is changed to the correction by the display function for correcting the optical sensor, and then the output value from the optical sensor unit 5 is detected. . That is, a part of the display 2 is used as the light source 2A, and the brightness value of the light source 2A is detected. Then, the detected output value is temporarily stored in the RAM.
It is stored in 7B.

The correction value calculation function is a function that operates as follows. First, the standard value stored in the ROM 7A is read and temporarily stored in the RAM 7B. continue,
The read standard value and the display 2 which is detected by the optical sensor output detection function and temporarily stored in the RAM.
The magnitude relationship with the output value, which is the luminance value of the light source 2A, is compared. The correction value is calculated based on this magnitude relationship. For example, if the values are the same, the correction value is set to zero. Then, when the standard value is higher, the correction value is set by the brightness adjusting function so as to correct the output value of the optical sensor unit 5 with respect to the ambient light higher, and when the standard value is lower, the optical sensor is adjusted by the brightness adjusting function. The correction value is set so that the output value of the unit 5 with respect to the ambient light is corrected low. That is, in the former case, the correction value takes a positive value, but in the latter case, the correction value takes a negative value. This is because when the standard value is determined to be higher, the brightness value of the display 2 is lower, that is, the brightness of the display 2 is darker than the standard value. In this state, the brightness of the ambient light is detected by the optical sensor unit 5 by the brightness adjusting function described later, and when it is determined that the ambient brightness is the standard brightness, the brightness value of the display 2 is changed. Not done. However, the brightness of the display 2 is dark from the time of product shipment or due to deterioration over time. In the case of such a display 2, by raising the output value of the ambient light by the correction value, it is determined that the ambient light is bright, so that the brightness of the display 2 is set to be increased, and such inconvenience is suppressed. You can Further, in the case where the display 2 that is originally displayed brightly is provided, the brightness of the display 2 can be adjusted so as not to be too bright by correcting and lowering the brightness of the ambient light contrary to the above.

The brightness adjusting function is a function that operates as follows. First, when the button portion 4B of the fold detection unit 4 is opened, it receives the information from the fold detection unit 4 and detects that the housing 1 is opened. Subsequently, the light sensor unit 5 detects the brightness of the ambient light and temporarily stores the output value in the RAM 7B. Subsequently, the ambient light standard value stored in advance in the ROM 7A is read out and also stored in the RAM 7B. Then, the value obtained by adding or subtracting the above-mentioned correction value to the output value of the optical sensor unit 5 for ambient light is compared with the ambient light standard value, and the brightness of the self-luminous display 2 is changed based on the magnitude relationship. As a result, the brightness characteristic of the display 2 is taken into consideration with respect to the output value of the optical sensor unit 5 with respect to ambient light, and the brightness of the display 2 is adjusted. Can be done.

Here, for each of the above functions, the program described to operate as described above is the control unit 6 C
It can be realized by being incorporated in a PU (not shown) and executed by the CPU. Therefore, each program
It is stored in the ROM 7A which is the storage unit 7, and is read and incorporated by the CPU as needed. This program sets, for example, the display of the self-luminous display 2 to a predetermined display state when the folding detection unit 4 provided in the housing 1 detects that the folding mobile phone is in the folded state. Optical sensor correction display processing, sensor output detection processing for detecting an output value from the optical sensor unit 4 when the housing 1 is in the folded state and the self-luminous display 2 is in a predetermined display state, and at this time And a correction value calculation process for calculating a correction value for correcting the output value of the optical sensor unit 5 by comparing the detected output value of 1 with the standard value stored in advance in the storage unit 7 provided in the mobile phone. , A brightness adjustment process for changing the brightness of the self-luminous display 2 based on the output value for the ambient light from the optical sensor unit 5 and the calculated correction value, and the operation of the control unit 6 is controlled. Folding a cellular phone display luminance adjustment program.

(Operation) Next, the operation of one embodiment will be described with reference to FIG.
It will be described with reference to FIG. FIG. 4 is a flowchart showing the operation when calculating the correction value for the output value of the optical sensor unit 5. FIG. 5 is a flowchart showing the operation when adjusting the brightness of the self-luminous display 2.

First, the control unit 6 detects the information output from the folding detection unit 4 to recognize whether or not the telephone is in the folded state (step S).
1). For example, the information output from the folding detection unit 4 is read by the control unit 6 at regular time intervals, and the control unit 6
RAM when the phone recognizes the phone as folded
It is designed to set a preset flag such as. Specifically, the flag variable F1 initialized when the power is turned on is set to 1 in the folded state.
Is substituted.

Next, when F1 = 1, that is, when the housing 1 is folded, the display state of the self-luminous display 2 is limited to the portion corresponding to the optical sensor section 5 as described above. Change to display status (step S
2. Display process for optical sensor correction).

Subsequently, in the folded state, the display 2 is the measurement target of the optical sensor unit 5, and the optical sensor unit 5 is subject to measurement.
Detects the brightness of the light source 2A, which is the display portion of the display 2 (step S3). The detected output value of the brightness at this time is temporarily stored in the RAM (sensor output detection step). In addition, the standard value is read from the storage unit 7,
This is also temporarily stored in the RAM (step S4).

Subsequently, the output value and the standard value are compared with each other. First, it is judged whether or not these values are equal (step S5). At this time, if it is determined that they are equal, the correction value is not set, that is, the correction value is set to 0. If it is determined that they are not equal, it is determined which value is larger (step S6). If it is determined that the output value is large, that is, if the brightness value of the display 2 is high, the correction value is set to a negative value (step S).
7).

The magnitude of this correction value is set based on the difference between the output value and the standard value. For example, data in which the magnitude of the correction value corresponding to the difference is predetermined is stored in the storage unit 7, and the value of the correction value is obtained by reading and matching the data. Specifically, as the output value is larger than the standard value and the difference is larger, the correction value becomes a negative value having a larger absolute value. When the difference is not so large, it becomes a negative value with a small absolute value. On the other hand, when the magnitude relationship between the output value and the standard value is opposite, the correction value becomes a positive (plus) value (step S8),
The correction value is calculated in the same manner as described above (correction value calculation step).
Then, after that, the power of the display 2 is turned off (step S9). In step S3, display 2
After detecting the brightness of the light source 2A, the display 2 may be powered off.

As a result, a correction value reflecting the brightness characteristic of each display 2 is calculated, and the brightness of the ambient light is corrected by this correction value, so that the brightness adjustment corresponding to each display 2 is performed. become.

Next, the operation of the self-luminous display 2 shown in FIG. 5 during brightness adjustment will be described. First, it is detected whether or not the housing 1 is open (step S1).
1). Specifically, the above-mentioned flag F1 is set to zero when the button portion 4B of the folding detection portion 4 is released. This is because the state of the folding detection unit 4 is monitored by the control unit 6.

Then, from the state of the flag F1 to the case 1
When it is detected that is open, the brightness value of the ambient light is detected by the optical sensor unit 5 (step S12), and the output value at this time is temporarily stored in the RAM. Subsequently, the correction value calculated as described above is read from the storage unit 7, and the correction value is added to or subtracted from the output unit to calculate the brightness B of the ambient light corrected corresponding to the telephone. Is performed (step S13). That is, a value in which the brightness characteristic of the display 2 of the telephone is added to the actual ambient brightness is calculated.

Subsequently, the ambient light standard value previously stored in the ROM is read out and temporarily stored in the RAM (step S14). Then, this ambient light standard value is compared with the corrected ambient light brightness B. At this time, if the values are the same (step S15), the display brightness value is not changed. Then, if the corrected ambient light brightness B is higher (step S16), control is performed to increase the brightness value of the self-luminous display 2 (step S17), and if B is smaller, the brightness value of the display 2 is decreased. Control (step S18, brightness adjustment step).

At this time, the adjustment value of the brightness value of the display 2, that is, how much the light emission amount is increased or decreased depends on the corrected brightness B of the ambient light as described above.
And the ambient light standard value.

By doing so, not only the brightness of the display 2 is adjusted based on the brightness of the ambient light, but also the brightness adjustment of the display 2 is performed in consideration of the brightness characteristics different for each display 2. Can be executed.

Another embodiment of the present invention will be described below. The other embodiment has substantially the same components as the mobile phone according to the above-described embodiment, but is different in that the brightness of the display 2 is adjusted based on a user's instruction. The details will be described below.

First, in the present embodiment, the standard value compared with the output value of the light source 2A is a value representing a predetermined range. That is, the value that allows the brightness of the display 2 to be the standard value has a width. Therefore, the value when the light sensor unit 5 detects the brightness of the light source 2A of the display 2 is
If it is within the range of the standard value, no correction is made. Then, when the output value of the optical sensor unit 5 with respect to the light source 2A is not within the range of the standard value, the correction value is calculated with reference to the median of the standard values.

Further, in this embodiment, the second standard value having a value different from the standard value is also stored in advance.
The second standard value is a value used when the correction value is calculated in the dark room, and thus is set lower than the standard value. The user can arbitrarily select which standard value to use to calculate the correction value by operating the operation unit 3. When it is set to use the second standard value, the user folds the mobile phone in a dark room or a dark box.

By doing so, the light from the light source 2A is detected by the optical sensor section 5 in a state where the light is blocked from the outside, so that the correction value more corresponding to the brightness of the display 2 can be calculated. Can be executed.

Similarly to the above standard value, the ambient light standard value is a value representing a predetermined range, and two or more different ambient light standard values are stored in advance. These ambient light standard values are set as values according to the place where the user uses the mobile phone, such as outdoors or indoors. The user can set the brightness of the display to a brightness more suited to the ambient brightness by selecting the ambient light standard value according to the place of use.

Further, in the present embodiment, the above-described brightness adjusting function is not executed only when the mobile phone is opened, but is executed based on the operation command of the user. Therefore, the brightness adjusting function of the control unit 6 is activated by receiving a predetermined command from the operation unit 3.

By doing so, it is possible to further suppress the variation in the brightness of the display due to the difference in the brightness characteristic for each display, and it is possible for the user to arbitrarily perform the brightness adjustment. It is possible to improve the convenience of the user.

[0052]

Since the present invention is constructed and functions as described above, according to the present invention, the correction of the output value with respect to the ambient light of the optical sensor unit corresponding to the luminance characteristics during the production of the display and the luminance characteristics due to aging deterioration. Since the value is calculated and the output value of the optical sensor unit 5 with respect to the ambient light is corrected based on this correction value, the brightness adjustment according to the brightness characteristic of the display is automatically performed, and the visibility of the display is improved. At the same time, it is possible to suppress variations in the brightness characteristics that differ for each display, and to make the quality of the mobile phone itself uniform.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing a configuration in an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration in an embodiment of the present invention.

FIG. 3 is a diagram showing a self-luminous display, and an explanatory diagram showing a display state when the display is changed to correct an optical sensor.

FIG. 4 is a flowchart showing an operation when calculating a correction value for an output value of an optical sensor unit.

FIG. 5 is a flowchart showing an operation when adjusting the brightness of the self-luminous display.

[Explanation of symbols]

1 case 2 Self-luminous display 3 operation part 4 Folding detector 5 Optical sensor section 6 control unit 7 memory 1A upper case 1B lower case 2A light source

Claims (6)

[Claims] 1. A foldable casing, a self-luminous display and an operating unit arranged on a folding surface of the casing, and a control unit for controlling the operation of the telephone itself based on a command from the operating unit. A foldable mobile phone having a storage unit having a predetermined storage capacity, a folding detection unit for detecting that the casing is in a folded state, and a state in which the casing is folded. And a light sensor section facing the self-luminous display, and the storage section stores a predetermined standard value to be compared with an output value from the light sensor section for the self-luminous display. An optical sensor correction display device in which the control unit sets the display of the self-luminous display to a predetermined display state when the folding detection unit detects that the housing is in the folded state. And an optical sensor output detection function for detecting an output value from the optical sensor unit when the housing is in a folded state and the self-luminous display is in a predetermined display state, and an output value detected at this time And a standard value stored in the storage unit, and a correction value calculation function for calculating a correction value for correcting the output value of the optical sensor unit, and an output value for the ambient light from the optical sensor unit and the A foldable mobile phone having a brightness adjusting function for changing the brightness of the self-luminous display based on the calculated correction value. 2. A display function for optical sensor correction included in the control unit corresponds to a display state of the self-luminous display when the housing is in a folded state, corresponding to a position of the optical sensor unit. The foldable mobile phone according to claim 1, which has a function of controlling a display state. 3. The optical sensor correction display function of the control unit is only for a portion where the display state of the self-luminous display is facing the optical sensor unit when it is detected that the housing is in the folded state. The foldable mobile phone according to claim 1, wherein the foldable mobile phone has a function of controlling to display. 4. The correction value calculation function of the control unit is
When the output value from the optical sensor unit is compared with the standard value, and when the standard value is higher, the brightness adjustment function corrects the output value of the optical sensor unit with respect to ambient light to be high. A value is set, and when the standard value is lower than the standard value, the brightness adjusting function sets the correction value so as to correct the output value of the optical sensor unit with respect to ambient light to a low value. The foldable mobile phone according to Item 1, 2, or 3. 5. A method of adjusting the brightness of a self-luminous display provided in a housing of a foldable mobile phone by a command from a control unit that controls the operation of the phone itself. An optical sensor correction display step of setting the display of the self-luminous display to a predetermined display state when the folding detection unit provided detects that the folding mobile phone is in a folded state; Is a folded state and the self-luminous display is in a predetermined display state, a sensor output detection step of detecting an output value from the optical sensor section, the detected output value at this time and the mobile phone A correction value calculation step of calculating a correction value for correcting the output value of the optical sensor unit by comparing with a standard value stored in advance in a storage unit provided, and for the ambient light from the optical sensor unit. Display brightness adjustment method foldable portable telephone characterized by comprising a luminance adjusting step of changing the brightness of the self-luminous display on the basis of the correction value a force value and the calculated. 6. A program for controlling the operation of a control unit for controlling the operation of the foldable mobile phone so as to adjust the brightness of a self-luminous display arranged in the housing of the foldable mobile phone. An optical sensor correction display process for setting the display of the self-luminous display to a predetermined display state when the folding detection unit provided in the body detects that the folding mobile phone is in a folded state, and A sensor output detection process of detecting an output value from the optical sensor unit when the housing is in the folded state and the self-luminous display is in a predetermined display state, the detected output value at this time, and the portable device. A correction value calculation process of calculating a correction value for correcting the output value of the optical sensor unit by comparing with a standard value stored in advance in a storage unit provided in the telephone; Display brightness of a foldable mobile phone that controls the operation of the control unit to execute a brightness adjustment process for changing the brightness of the self-luminous display based on an output value for ambient light and the calculated correction value. Adjustment program.