JP3781652B2 - Foldable mobile phone, display brightness adjustment method and program for foldable mobile phone - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a foldable mobile phone, and more particularly to a foldable mobile phone including a self-luminous display. The present invention also relates to a method and a program for correcting the brightness of a display of a folding cellular phone.
[0002]
[Prior art]
In recent years, mobile phones adopting a self-luminous display such as an organic EL display have been introduced in order to reduce power consumption. And 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 and the place where it is used.
[0003]
Conventionally, it is also possible to mount a function of automatically changing the luminance according to ambient light by mounting an optical sensor. For example, in a place where the surroundings are judged to be bright, it can be clearly seen by further increasing the brightness of the display. Can do. In this manner, mobile phones with improved convenience are provided in consideration of power saving and user-friendliness.
[0004]
The output characteristics of the photosensors that serve as a reference when adjusting the luminance as described above vary depending on the individual photosensors. Therefore, in order to suppress such variations, adjustment is usually performed on 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. When the ambient brightness is detected by the optical sensor, the measured value of the ambient light is corrected according to the correction value, and the luminance of the display is changed based on this value. In this way, variations in the characteristics of the optical sensor can be suppressed.
[0005]
[Problems to be solved by the invention]
However, in the above-described method, it is possible to correct the variation in the output value of the optical sensor itself. However, if the luminance varies in the initial state of the display, the luminance value of the display corresponding to the ambient light. Even if is changed, 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 expected brightness may not be reached. 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. Such a situation can also occur when luminance deterioration occurs due to aging of the display.
[0006]
OBJECT OF THE INVENTION
The present invention improves the inconveniences of the above-described conventional examples, and in particular, while saving power, the display state of the display can be automatically adjusted to display at a luminance corresponding to the ambient light, and the luminance varies from display to display. It is an object of the present invention to provide a foldable mobile phone that can suppress variations in the above. It is another object of the present invention to provide a display brightness correction method and program for a foldable mobile phone.
[0007]
[Means for Solving the Problems]
  Therefore, in the present invention, a foldable casing, a self-luminous display and an operation section arranged on the folding surface of the casing, and a control for controlling the operation of the telephone itself based on a command from the operation section. And a storage unit having a predetermined storage capacity, a fold detection unit for detecting that the case is in a folded state, and a self-luminous type in a state in which the case is folded A light sensor unit facing the display, and storing a predetermined standard value to be compared with an output value from the light sensor unit for the self-luminous display in the storage unit. When the detection unit detects that the housing is in the folded state, the display of the self-luminous display is in a predetermined display state.Display for correctionThe light sensor correction display function set to, and the self-luminous display with the housing foldedFor correctionThe optical sensor output detection function that detects the output value from the optical sensor unit in the display state, and the output value detected at this time is compared with the standard value stored in the storage unit to output the optical sensor unit A correction value calculation function for calculating a correction value for correcting the value;When the fold detection unit detects that the housing is openFrom the optical sensorwas detectedA brightness adjustment function that changes the brightness of the self-luminous display based on the output value for ambient light and the calculated correction valueWhen,With a configuration ofThe
[0008]
With such a configuration, when the foldable mobile phone is folded, the display and the optical sensor unit face each other, and the optical sensor unit detects the luminance of the display. The detected output value is compared with a standard value preset in the storage unit, and a correction value corresponding 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 cellular phone is opened later. Then, the mobile phone adjusts the brightness of the display based on the output value and the correction value. Therefore, in order to adjust the brightness of the display by adjusting the correction value based on the result of comparing the brightness of the display with the standard value to the output value of the ambient light, the brightness characteristic at the time of shipment of the display and the brightness due to aging deterioration The brightness of the display can be automatically adjusted while suppressing the influence of the characteristics of the display.
[0009]
  The display function for correcting the optical sensor of the control unit controls the display state of the self-luminous display to the display state corresponding to the position of the optical sensor unit when detecting that the housing is in the folded state. It is desirable that the function be controlled so that only the part facing the optical sensor unit is displayed.Yes.Thereby, when the display is used as a light source for correcting the optical sensor, only the portion corresponding to the optical sensor is displayed in a state in which the mobile phone is folded, and the display portion of the display is limited, Power saving can be achieved. Furthermore, by making the display state suitable for optical sensor correction, such as displaying the portion in white, the correction and efficiency of the optical sensor can be ensured.
[0010]
  The correction value calculation function of the control unit is an output value for the ambient light of the optical sensor unit when the standard value is higher when the output value from the optical sensor unit is compared with the standard value. It is desirable that the correction value is set so that the output value for the ambient light of the optical sensor unit is corrected to be low by the brightness adjustment function when the standard value is lower.Yes.
[0011]
Thereby, the optical sensor is corrected in accordance with the luminance characteristics of each display. In other words, when the original brightness of the display is low, the correction value is calculated so that the output value of the ambient light sensor is corrected to be higher, or corrected when the original brightness of the display is high. To do. Thereafter, by adding / subtracting the correction value to / from the actual output value of the ambient light optical sensor, the ambient light is measured according to the brightness of the display, and the brightness is corrected according to the brightness characteristics. For example, in the case of a display with originally low brightness, even if the actual output value of the optical sensor with respect to ambient light is standard, the output value is corrected to be higher by the correction value, and the brightness of ambient light is brighter than standard It is judged. At this time, the brightness of the display is set higher. Therefore, it is possible to suppress variations in display luminance from the time of shipment or variations due to deterioration over time, taking into consideration the user's visibility.
[0012]
  Further, the present invention provides a method for adjusting the brightness of a self-luminous display disposed in a case of a foldable mobile phone according to a command from a control unit that controls the operation of the phone itself. When the foldable mobile phone detects that the foldable mobile phone is in the folded state, the display of the self-luminous display is in a predetermined display state.Display for correctionThe light sensor correction display process set to, and the self-luminous display is in a folded stateFor correctionWhen in the display stateFitted with a self-luminous display with the housing foldedA sensor output detecting step for detecting an output value from the optical sensor unit, and comparing the detected output value at this time with a standard value stored in advance in a storage unit provided in the mobile phone, the optical sensor unit A correction value calculating step for calculating a correction value for correcting the output value ofWhen the fold detection unit detects that the housing is openFrom the optical sensorwas detectedThere is also provided a display brightness adjustment method for a foldable mobile phone having a configuration including a brightness adjustment process for changing the brightness of a self-luminous display based on an output value for ambient light and a calculated correction value. HaveThe
[0013]
  Further, according to the present invention, there is provided a program for controlling the operation of a control unit for controlling the operation of the telephone itself so as to adjust the brightness of the self-luminous display disposed in the case of the folding cellular phone. When the folding detection unit provided on the body detects that the folding mobile phone is in the folded state, the display of the self-luminous display is in a predetermined display state.Display for correctionThe display process for optical sensor correction set to, and the self-luminous displayFor correctionWhen in the display stateFitted with a self-luminous display with the housing foldedSensor output detection processing for detecting an output value from the optical sensor unit, and comparing the detected output value at this time with a standard value stored in advance in a storage unit provided in the mobile phone, the optical sensor unit Correction value calculation processing for calculating a correction value for correcting the output value ofWhen the fold detection unit detects that the housing is openFrom the optical sensorwas detectedA brightness adjustment process for changing the brightness of the self-luminous display based on the output value with respect to the ambient light and the calculated correction value, and a display brightness adjustment program for the folding mobile phone that controls the operation of the control unit to execute the brightness adjustment process Also offersTheEven if it does in this way, it acts as mentioned above and can achieve the above-mentioned purpose.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG. 1 is a schematic diagram showing a 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.
[0015]
(overall structure)
First, the configuration of the mobile phone according to the present embodiment will be described with reference to FIGS. As shown in FIG. 1 and FIG. 2, the cellular phone according to the present invention is a case that can be folded into two, which is configured by opening and closing an upper case 1A and a lower case 1B with a hinge 1C. 1 is a foldable mobile phone. A self-luminous display 2 and an operation unit 3 are disposed on the folding surface of the housing 1. In particular, a self-luminous display 2 is disposed in the upper housing 1A, and an operation unit 3 is disposed in the lower housing 1B.
[0016]
Further, the casing 1 includes a fold detection unit 4 that detects that the casing 1 is in a folded state, and an optical sensor unit 5 that faces the self-luminous display 2 in a state in which the casing 1 is folded. Is provided.
[0017]
Further, the housing 1 is provided with a control unit 6 for controlling the operation of the telephone itself based on a command from the operation unit 3 and a storage unit 7 having a predetermined storage capacity (see FIG. 2). . This will be described in detail below.
[0018]
(Self-luminous display)
The self-luminous display 2 is a display that is controlled by the control unit 4 and emits light itself. For example, there is an organic EL display, and a material that emits light by an electroluminescence effect when an electrical stimulus is received is used. 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.
[0019]
Here, if the display 2 is the same product, it should have the same light emission characteristics, but in reality, the brightness differs for each display, resulting in variations. Therefore, even if the control unit 4 performs the same display control, the luminance varies depending on the display. In addition, variation in luminance also occurs due to aging.
[0020]
(Folding detector)
The fold detection unit 4 includes a button unit 4B that transmits a predetermined signal to the control unit 4 when pressed, and a projection 4A that presses the button unit 4B. The button 4B is provided in the lower housing 1B, and the protrusion 4A is provided in the upper housing 1A so that the protrusion 4A presses the button 4B when the housing 1 is folded. That is, the button part 4B and the protrusion part 4A are provided with the hinge part 1C symmetrically. Thereby, when the housing 1, that is, the cellular phone is folded, the button portion 4 </ b> B is pressed by the protrusion 4 </ b> A, and a predetermined signal is transmitted to the control unit 6. And the control part 6 can detect that the housing | casing 1 was folded so that it may mention later. However, the fold detection unit 4 is not limited to such a configuration. For example, it may be provided inside the hinge portion 1C so that the switch is turned on and off at a predetermined angle.
[0021]
(Optical sensor part)
The optical sensor unit 5 is a sensor that measures the brightness of the light emitter, 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. And in the state by which the housing | casing 1 was folded, it is provided in the position which faces the said display 2 so that the brightness | luminance of the display 2 can be measured.
[0022]
(Memory part)
The storage unit 7 is a storage medium that is provided in the housing 1 and stores predetermined information based on a command from the control unit 6. Specifically, it is composed of a ROM 7A and a RAM 7B. The ROM 7A may be a rewritable ROM such as an EPROM. The RAM 7B may be a register in the control unit 6 described later.
[0023]
The ROM 7A stores a predetermined standard value to be compared with the output value from the optical sensor unit 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 in a state where the self-luminous display 2 emits light with a predetermined luminance and the housing 1 is folded. Therefore, the standard value should be detectable in all telephones by design, but since the brightness of the display 2 varies as described above, it may be different for each telephone.
[0024]
The ROM 7A stores an ambient light standard value that is a predetermined standard brightness value of ambient light. That is, it is a value that is set to be general as the luminance value of the ambient light detected by the optical sensor unit 5 when the folding cellular phone is opened and used. For example, the luminance by the optical sensor unit 5 in the outdoors where there are most opportunities to use may be used. As will be described later, the brightness of the display 2 is adjusted based on this value.
[0025]
The ROM 7A also stores predetermined data such as the number of another person's mobile phone. In this way, the description of parts that are basically the same as those of general mobile phones is omitted.
[0026]
(Control part)
The control unit 6 is a CPU that is stored in the housing 1 and has a predetermined arithmetic processing capability. The control unit 6 has functions of a general mobile phone. For example, a function for displaying information input to the operation unit 3 on the display 2 and a call function are provided. Since this is a technique similar to the prior art, the description thereof is omitted.
[0027]
Further, the control unit 6 has a photosensor correction display function for setting the display of the self-luminous display 2 to a predetermined display state when the fold detection unit 4 detects that the housing 1 is in the folded state. The optical sensor output detection function for detecting the output value from the optical sensor unit 5 when the casing 1 is in the folded state and the self-luminous display 2 is in the predetermined display state, and the output value detected at this time A correction value calculation function for calculating a correction value for correcting the output value of the optical sensor unit 5 by comparing with a standard value stored in the storage unit 7 and an output value for ambient light from the optical sensor unit 5 are calculated. And a brightness adjustment function for changing the brightness of the self-luminous display 2 based on the correction value.
[0028]
The display function for optical sensor correction is a function that operates as follows. First, a predetermined signal issued from the fold detection unit 4 when the button unit 4B of the fold detection unit 4 is pressed, that is, a signal notifying that the casing 1 is folded is received. When this signal is received, the display on the self-luminous display 2 is changed to a 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 unit 5 provided in the lower housing 1 </ b> B emits light, and the light source 2 </ b> A of the optical sensor unit 5 is emitted. The display state of the display 2 is controlled so that The shape of the light source 2A is a square that is substantially the same as the shape of the light receiving portion of the optical sensor unit 5 as shown in FIG. At this time, the light source 2A portion of the display 2 is displayed in white, and the other portions are displayed in black, that is, do not emit light. However, such display is an example, and is not limited to such display. Here, FIG. 3 is an explanatory diagram showing a state when the display of the self-luminous display 2 is changed for optical sensor correction.
[0029]
The optical sensor output detection function is a function that operates as follows. First, as described above, it is detected that the casing 1 is folded, and the display value of the display 2 is changed for correction by the display function for optical sensor correction, and then the output value from the optical sensor unit 5 is detected. . That is, the luminance value of the light source 2A is detected using a part of the display 2 as the light source 2A. The detected output value is temporarily stored in the RAM 7B.
[0030]
The correction value calculation function is a function that operates as follows. First, the standard value stored in the ROM 7A is read out and temporarily stored in the RAM 7B. Subsequently, the magnitude relationship between the read standard value and the output value which is the luminance value of the light source 2A of the display 2 detected by the optical sensor output detection function and temporarily stored in the RAM is compared. A correction value is calculated based on this magnitude relationship. For example, when the values are the same, the correction value is set to zero. When the standard value is higher, a correction value is set so that the output value for the ambient light of the optical sensor unit 5 is corrected to be higher by the brightness adjustment function, and when the standard value is lower, the light sensor is set by the brightness adjustment function. The correction value is set so as to correct the output value for the ambient light of the unit 5 to be 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 it is determined that the standard value is higher, the luminance value of the display 2 is lower, that is, the brightness of the display 2 is darker than the standard. In this state, the brightness value of the display 2 is changed when the brightness of the ambient light is detected by the optical sensor unit 5 and the ambient brightness is determined to be standard. Not. However, the brightness of the display 2 has been reduced from the time of product shipment or due to deterioration over time. In the case of such a display 2, by setting the output value of the ambient light with 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 this inconvenience is suppressed. Can do. On the other hand, in the case where the display 2 is originally brightly displayed, 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.
[0031]
The brightness adjustment function is a function that operates as follows. First, when the button 4B of the fold detection unit 4 is opened, the information is received from the fold detection unit 4 and it is detected that the housing 1 is opened. Subsequently, the brightness of ambient light is detected by the optical sensor unit 5, and the output value is temporarily stored in the RAM 7B. Subsequently, the ambient light standard value stored in advance in the ROM 7A is read out, and is also stored in the RAM 7B. And the value which added and subtracted the said correction value with respect to the output value of the optical sensor part 5 with respect to ambient light is compared with ambient light standard value, and the brightness | luminance of the self-luminous display 2 is changed based on the magnitude relationship. Thereby, the luminance characteristic of the display 2 is taken into consideration with respect to the output value of the optical sensor unit 5 with respect to the ambient light, and the luminance of the display 2 is adjusted. Therefore, appropriate luminance setting is automatically set so that the user can easily see. Can be done.
[0032]
Here, each of the above functions can be realized by a program described so as to operate as described above being incorporated in a CPU (not shown) as the control unit 6 and executed by the CPU. Accordingly, each program is stored in the ROM 7A, which is the storage unit 7, and is read and incorporated by the CPU as necessary. For example, this program sets the display of the self-luminous display 2 to a predetermined display state when the foldable detection unit 4 provided in the housing 1 detects that the foldable mobile phone is in the folded state. A display process for optical sensor correction, a sensor output detection process for detecting an output value from the optical sensor unit 4 when the housing 1 is in a folded state and the self-luminous display 2 is in a predetermined display state; 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 with a standard value stored in advance in the storage unit 7 provided in the mobile phone; The control unit 6 is controlled to perform the brightness adjustment processing 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. Folding a cellular phone display luminance adjustment program.
[0033]
(Operation)
Next, the operation of the embodiment will be described with reference to FIGS. FIG. 4 is a flowchart showing an operation when calculating a correction value for the output value of the optical sensor unit 5. FIG. 5 is a flowchart showing an operation when adjusting the luminance of the self-luminous display 2.
[0034]
First, the control unit 6 detects information output from the fold detection unit 4 to recognize whether or not the telephone is in a folded state (step S1). For example, information output from the fold detection unit 4 is read by the control unit 6 at regular time intervals, and is set in advance in a RAM or the like when the control unit 6 recognizes that the telephone is in a folded state. The flag is set. Specifically, 1 is assigned to F1, which is a flag variable that is initialized when the power is turned on, in the folded state.
[0035]
Subsequently, when F1 = 1, that is, when the housing 1 is folded, the display state of the self-luminous display 2 is a state in which only the portion corresponding to the optical sensor unit 5 is displayed as described above. (Step S2, photosensor correction display process).
[0036]
Subsequently, in the folded state, the display 2 becomes a measurement target of the optical sensor unit 5, and the optical sensor unit 5 detects the luminance of the light source 2 </ b> A that is a display part of the display 2 (step S <b> 3). The detected luminance output value at this time is temporarily stored in the RAM (sensor output detection step). Further, the standard value is read from the storage unit 7 and is also temporarily stored in the RAM (step S4).
[0037]
Subsequently, the output value and the standard value are compared. First, it is determined 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 zero. If it is determined that they are not equal, it is determined which value is larger (step S6). When it is determined that the output value is large, that is, when it is determined that the luminance value of the display 2 is high, the correction value is set to a negative value (step S7).
[0038]
The magnitude of the 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 determined in advance is stored in the storage unit 7, and 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 is calculated in the same manner as described above (correction value calculation) except that the correction value becomes a positive value (step S8). Process). Thereafter, the display 2 is turned off (step S9). Note that the power of the display 2 may be turned off after detecting the luminance of the light source 2A, which is the display 2, in step S3.
[0039]
As a result, a correction value reflecting the luminance characteristic of each display 2 is calculated, and the luminance of the ambient light is corrected with this correction value, so that luminance adjustment corresponding to each display 2 is performed.
[0040]
Next, the operation at the time of brightness adjustment of the self-luminous display 2 shown in FIG. 5 will be described. First, it is detected whether or not the housing 1 is in an opened state (step S11). Specifically, when the pressing of the button part 4B of the fold detection part 4 is released, the flag F1 described above is set to zero. This is because the state of the fold detection unit 4 is monitored by the control unit 6.
[0041]
Subsequently, when it is detected from the state of the flag F1 that the housing 1 is opened, 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 stored in the RAM. Temporarily stored. 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. (Step S13). That is, a value obtained by adding the luminance characteristics of the display 2 of the telephone to the actual ambient brightness is calculated.
[0042]
Subsequently, the ambient light standard value stored in advance in the ROM is read out and temporarily stored in the RAM (step S14). Then, the ambient light standard value is compared with the corrected brightness B of the ambient light. At this time, if the values are the same (step S15), the display luminance value is not changed. If the corrected ambient light brightness B is larger (step S16), control is performed to increase the luminance value of the self-luminous display 2 (step S17), and if B is small, the luminance value of the display 2 is decreased. (Step S18, luminance adjustment step).
[0043]
At this time, the adjustment value of the luminance value of the display 2, that is, how much the light emission amount is increased or decreased is based on the difference between the corrected ambient light brightness B and the ambient light standard value as described above. Calculated.
[0044]
In this way, 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 executed in consideration of the brightness characteristics that are different for each display 2. Can do.
[0045]
Hereinafter, other embodiments of the present invention will be described. The other embodiment includes substantially the same components as the mobile phone in the above-described embodiment, but is further different in that the brightness of the display 2 is adjusted based on a user instruction. Details will be described below.
[0046]
First, in this embodiment, the standard value compared with the output value of the light source 2A is a value representing a predetermined range. That is, a range is given to a value that allows the luminance of the display 2 to be a standard value. Therefore, if the value when the light sensor 2 detects the luminance of the light source 2A of the display 2 is within the range of the standard value, the correction is not performed. When the output value of the optical sensor unit 5 for the light source 2A is not within the range of the standard value, the correction value is calculated based on the median value of the standard value.
[0047]
In the embodiment, a second standard value different from the standard value is also stored in advance. Since the second standard value is a value used when the correction value is calculated in the dark room, the second standard value is set lower than the standard value. Then, which standard value is used to calculate the correction value can be arbitrarily selected by the user operating the operation unit 3. When the use of the second standard value is set, the user folds the mobile phone in the dark room or dark box.
[0048]
By doing in this way, since the light from the light source 2A is detected by the optical sensor unit 5 in a state where the light is blocked from the outside, the correction value corresponding to the luminance of the display 2 is further calculated. Can do.
[0049]
Similarly to the 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 places where the user uses the mobile phone, such as outdoors and indoors. The user can set the brightness of the display to a brightness adapted to the ambient brightness by selecting the ambient light standard value according to the place of use.
[0050]
Furthermore, in the present embodiment, the brightness adjustment function described above is not executed only when the mobile phone is opened, but is executed based on a user operation command. Therefore, the brightness adjustment function of the control unit 6 is activated by receiving a predetermined command from the operation unit 3.
[0051]
By doing in this way, the dispersion | variation in the brightness of the said display by the difference in the luminance characteristic for every display can be suppressed more, and since the user can perform brightness | luminance adjustment arbitrarily, the said user's Convenience can be improved.
[0052]
【The invention's effect】
Since the present invention is configured and functions as described above, according to this, the correction value of the output value for the ambient light of the optical sensor unit corresponding to the luminance characteristic at the time of production of the display and the luminance characteristic due to aging is calculated. Since the output value of the optical sensor unit 5 with respect to ambient light is corrected based on the correction value, the brightness adjustment according to the brightness characteristic of the display is automatically executed, and the display is improved while improving the visibility of the display. Variations in luminance characteristics that differ from one to the other can be suppressed, and the quality of the mobile phone itself can be made uniform.
[Brief description of the 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 is an explanatory diagram showing a display state when changed for optical sensor correction.
FIG. 4 is a flowchart showing an operation when calculating a correction value for the output value of the optical sensor unit;
FIG. 5 is a flowchart showing an operation when adjusting the luminance of the self-luminous display.
[Explanation of symbols]
1 housing
2 Self-luminous display
3 Operation part
4 Folding detector
5 Optical sensor
6 Control unit
7 Memory part
1A Upper housing
1B Lower case
2A light source

Claims (2)

A foldable case, a self-luminous display and an operation unit arranged on a folding surface of the case, a control unit for controlling the operation of the telephone itself based on a command from the operation unit, and a predetermined memory In a foldable mobile phone comprising a storage unit having a capacity,
The previous-stage housing includes a fold detection unit that detects that the housing is in a folded state, and a light sensor unit that faces the previous-time self-luminous display in a state in which the housing is folded. Storing a predetermined standard value to be compared with an output value from the light sensor unit for the self-luminous display,
When the control unit detects that the casing is in a folded state by the fold detection unit, the display on the self-luminous display is corrected corresponding to the position of the optical sensor unit in a predetermined display state. An optical sensor correction display function set to display for display, and an optical sensor that detects an output value from the optical sensor unit when the casing is in a folded state and the self-luminous display is in the correction display state An output detection function; a correction value calculation function for calculating a correction value for correcting the output value of the optical sensor unit by comparing the output value detected at this time with the standard value stored in the storage unit; Based on the output value with respect to the ambient light detected from the optical sensor unit and the calculated correction value when the fold detection unit detects that the housing is opened, the self-luminous display Change brightness Folding mobile phone, characterized by comprising that the brightness adjustment function, a. A foldable case, a self-luminous display and an operation unit arranged on a folding surface of the case, a control unit for controlling the operation of the telephone itself based on a command from the operation unit, and a predetermined memory In a foldable mobile phone comprising a storage unit having a capacity,
The previous-stage housing includes a fold detection unit that detects that the housing is in a folded state, and a light sensor unit that faces the previous-time self-luminous display in a state in which the housing is folded. Storing a predetermined standard value to be compared with an output value from the light sensor unit for the self-luminous display,
When the control unit detects that the casing is in the folded state by the fold detection unit, only the part that faces the light sensor unit in the predetermined display state is displayed on the self-luminous display. An optical sensor correction display function set to a correction display to be displayed, and an output value from the optical sensor unit is detected when the casing is in a folded state and the self-luminous display is in the correction display state And a correction value calculation function for calculating a correction value for correcting the output value of the optical sensor unit by comparing the output value detected at this time with the standard value stored in the storage unit And the self-light emission based on the output value for the ambient light detected from the optical sensor unit and the calculated correction value when the folding detection unit detects that the housing is opened. Type display Foldable portable telephone characterized by comprising a brightness adjustment function for changing the brightness, the.

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