JP2011025779A - Device and method for controlling display, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a display surface from being hardly viewed even when light enters. <P>SOLUTION: An electronic device 1 including a display part 12 composed of a display surface 32A of transparent glass and a display surface 32B of frosted glass controls an attitude of the display part 12 so that the display surface 32A or the display surface 32B faces the front and switches the display surface 32 facing the front according to the illuminance in the front of the display surface 32 facing the front. As a result, the display surface 32 is prevented from being hardly viewed even when light enters the display surface 32. The present invention is applicable to electronic devices such as an on-vehicle car navigation device for example. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a display control device, a display control method, and a program.

  For example, a display unit of an electronic device such as a navigation device or an audio device mounted on a vehicle has its display surface oriented in a direction that can be viewed from a driver seat or a passenger seat. However, depending on the positional relationship between the vehicle and the sun, the sun may appear on the display surface, making it difficult to see.

  FIG. 8 shows a state where the sun is reflected on the display surface 202 of the display unit 201 and the upper left part of the display surface 202 shines and is difficult to see.

  If the display surface 202 is difficult to see in this manner, the electronic device cannot be operated accurately, and for example, the volume may be raised by mistake. Normally, the user (in this case, the driver) had to adjust his / her angle by holding his hand to block the light or changing his / her head position. However, for example, if such an operation is performed during driving, it is very dangerous.

  Therefore, in the case of a liquid crystal display, a reflection mode for reflecting light from the front of the liquid crystal panel to the front of the liquid crystal panel by providing a mirror on the reflection plate and providing an opening and a non-opening on the liquid crystal panel, and the liquid crystal panel There has been disclosed a configuration in which a visibility mode is improved by switching between a reflection mode and a transmission mode, having a transmission mode in which light from the back is transmitted to the front surface of the liquid crystal panel.

JP 2005-250063 A

  However, in the above-described method, for example, it is necessary to align the mirror provided on the reflector with the opening or non-opening of the liquid crystal panel. Therefore, it takes time and effort to manufacture the device precisely.

  Therefore, the present invention has been made in view of such a situation, and it is possible to easily prevent light from entering and becoming difficult to see.

  A display control device according to one aspect of the present invention is a display control device having a display unit including a first display surface and a second display surface, wherein the first display surface or the second display surface faces a predetermined direction. The control means for controlling the attitude of the display unit and the detection means for detecting the illuminance in front of the first display surface or the second display surface, and the control means is a display facing a predetermined direction. The display surface facing a predetermined direction is switched according to the illuminance in front of the surface.

  The display unit is configured by laminating transparent glass on one surface of the inorganic EL display unit and polishing glass on the other surface, the first display surface is a surface on the transparent glass side, The display surface is a surface on the side of the frosted glass, and the control means, when the magnitude of the illuminance detected by the detection means is greater than or equal to a predetermined threshold value, the second display surface has a predetermined direction. Rotate the display unit so that it faces, and if the detected illuminance magnitude is less than or less than a predetermined threshold, rotate the display unit so that the first display surface faces a predetermined direction Can do.

  The control means can invert the display displayed on the display unit when switching the display surface facing a predetermined direction.

  The display control method according to one aspect of the present invention is the display control method for a display control apparatus having a display unit including a first display surface and a second display surface, wherein the first display surface or the second display surface is predetermined. Including a control step for controlling the attitude of the display unit so as to face the direction, and a detection step for detecting the illuminance in front of the first display surface or the second display surface. The control step faces a predetermined direction. The display surface facing a predetermined direction is switched in accordance with the illuminance in front of the display surface.

  A program according to one aspect of the present invention is a program for controlling the attitude of a display unit of a display control apparatus having a display unit including a first display surface and a second display surface, the first display surface or the second display surface. Including a control step for controlling the attitude of the display unit so that the display surface faces a predetermined direction, and a detection step for detecting the illuminance in front of the first display surface or the second display surface. A computer is caused to execute a control process characterized by switching a display surface facing a predetermined direction in accordance with an illuminance in front of the display surface facing a predetermined direction.

  According to one aspect of the present invention, it is possible to easily prevent the light from becoming difficult to see even if light enters.

It is a figure which shows the structural example of the external appearance of the electronic device which concerns on embodiment of this invention. It is a figure which shows the structural example of the display panel of FIG. It is a figure which shows the example of a display of an inorganic EL display panel. It is a figure which shows the structural example of the display part of FIG. It is a figure which shows rotation operation | movement of the display part of FIG. It is a block diagram which shows the functional structural example of the electronic device which concerns on embodiment of this invention. It is a flowchart which shows operation | movement of the control part in the case of performing the switching process of a display part. It is a figure which shows the display state of a display surface.

[Structure of Electronic Device 1 According to Embodiment of the Present Invention]
FIG. 1 is a diagram illustrating a configuration example of an external appearance of an electronic device 1 according to an embodiment of the present invention. The electronic device 1 includes a main body 11 and a display unit 12. Here, the electronic device 1 is an audio device or a car navigation device mounted on a vehicle. That is, the electronic device 1 is disposed in front of the vehicle compartment so that the display unit 12 faces the direction in which the driver's seat and the passenger seat are present.

The display unit 12 is an inorganic EL display panel (inorganic electroluminescence
display) 21. An inorganic EL display panel uses a substance that emits light when a voltage is applied. A light emitter is deposited on a glass substrate, and characters and the like are displayed by applying an AC voltage of 100 to 200V.

  FIG. 2 is a diagram showing a configuration example of the inorganic EL display panel 21 (hereinafter referred to as the display panel 21). The display panel 21 is configured by laminating a transparent glass 32A on one surface of a display tube 31 on which a luminescent material is deposited, and a polished glass 32B on the opposite surface.

  As shown in FIG. 3, the inorganic EL display panel has a feature that the portion other than the displayed characters can be made transparent. Therefore, if the transparent glass 32A and the polished glass 32B are laminated so as to sandwich the display tube 31 on which the luminous body is deposited, display is performed from both the side where the transparent glass 32A is exposed and the side where the polished glass 32B is exposed. Can be visually recognized.

  That is, as shown in the upper part of FIG. 4, the display unit 12 exposes the display surface from which the transparent glass 32A is exposed (hereinafter referred to as the display surface 32A) and the polished glass 32B as shown in the lower part of FIG. The two display surfaces 32A and 32B (hereinafter simply referred to as the display surface 32 if they do not need to be individually distinguished) of the display surface (hereinafter referred to as the display surface 32B) are integrated with each other (ie, an angle of 180 degrees). Is provided).

  The display unit 12 includes an illuminance sensor 41A on the same side as the display surface 32A as shown in the upper part of FIG. 4, and an illuminance sensor 41B on the same side as the display surface 32B as shown in the lower part of FIG. Each is provided. The illuminance sensor 41A detects the illuminance in front of the display surface 32A, and the illuminance sensor 41B detects the illuminance in front of the display surface 32B.

Returning to FIG. 1, the electronic device 1 switches the display surface 32 of the display unit 12 facing the front (display surface 32 visible to the user) from the display surface 32A to the display surface 32B, or from the display surface 32B to the display surface 32A. it can.

In the example of FIG. 1, the display unit 12 has a side surface in the width direction (vertical direction in FIG. 1) of the display unit 12 connected to the slide unit 11 </ b> A of the main body 11 via a support unit 51. When the support portion 51 rotates or the slide portion 11A moves in the vertical direction, the display portion 12 rotates up and down 180 degrees, and the display surface 32 facing the front is switched.

  FIG. 5 shows how the display surface 32 facing the front is switched from the display surface 32A to the display surface 32B. As shown in the uppermost stage of FIG. 5, from the state in which the display surface 32A faces the front, the support part 51 is guided by the slide part 11A and moved downward, as shown in the second stage from the top. The display unit 12 is tilted so that the lower side of the unit 12 is pushed forward. Then, as shown in the third and bottom stages from the top in FIG. 5, the display unit 12 is set up so that the display surface 32B faces upward by lifting the side pushed out upward. In this way, the display surface 32 facing the front is switched from the display surface 32A to the display surface 32B.

  When switching from the display surface 32B to the display surface 32A, the illustration is omitted, but the upper side of the display unit 12 is forward (front side) from the state where the display surface 32B faces the front as shown in the lowermost stage of FIG. ) Fall down. The support unit 51 is guided by the slide unit 11A and moves upward, so that the display unit 12 is set up so that the display surface 32A faces the front. In this way, the display surface 32 facing the front is switched from the display surface 32B to the display surface 32A.

[Display surface switching processing]
FIG. 6 is a block diagram illustrating a functional configuration example of the electronic apparatus 1 (main body 11) according to the present invention. The electronic device 1 has a configuration for executing general functions (for example, an audio signal reproduction function and a navigation function) as the electronic device, but illustration of these configurations is omitted here.

  Under the control of the control unit 102, the drive unit 101 moves the support unit 51 as described above to rotate the display unit 12 and switches the display surface 32 facing the front. The control unit 102 inputs a sensor signal from the illuminance sensor 41 on the same side as the display surface 32 facing the front. And the control part 102 detects the brightness ahead of the display surface 32 based on the sensor signal, and controls the drive part 101 based on the brightness.

  FIG. 7 is a flowchart showing the operation of the control unit 102 when executing a process of switching the display surface 32 facing the front.

  In step S1, the control unit 102 acquires a sensor signal from the illuminance sensor 41 on the same side as the display surface 32 that is now facing the table. In step S2, based on the acquired sensor signal, the illuminance (that is, the table is displayed). It is determined whether or not the brightness of the front of the display surface 32 facing is equal to or greater than a predetermined threshold.

  When it is determined in step S2 that the illuminance is smaller than the threshold value, in step S3, the control unit 102 controls the posture of the display unit 12 so that the display surface 32A (the surface on the transparent glass 32A side) faces the front. For example, when the display surface 32B faces the front, the drive unit 101 is controlled to rotate the display unit 12 so that the display surface 32A faces the front. In this case, since the upper and lower sides of the display unit 12 are inverted, if the display state is left as it is, the upper and lower sides of the display are also inverted (that is, the upper and lower sides are reversed). Therefore, the control unit 102 performs processing for inverting the display state up and down to restore the display up and down.

  Whether the display surface 32 facing the front surface is the display surface 32A or the display surface 32B is determined, for example, in the initial state every time the display surface 32A faces the front and the display surface 32 facing the front is switched. Further, it can be determined by storing information indicating the display surface 32 facing the front in an internal storage unit (not shown).

  In this case, when the display surface 32A is facing from the beginning, the state is maintained.

  When it is determined in step S2 that the illuminance is greater than or equal to the threshold, that is, for example, when the sun is reflected and the illuminance is increased, in step S4, the control unit 102 displays the display surface 32B (surface on the polished glass 32B side). The orientation of the display unit 12 is controlled so that is facing the front. When the display surface 32A faces the front, the control unit 102 controls the drive unit 101 to rotate the display unit 12 so that the display surface 32B faces the front. Also in this case, if the display state is left as it is, the display is inverted upside down, and the control unit 102 performs processing for inverting the display state upside down.

When the display surface 32B is facing from the beginning, the state is maintained.

  When the process of step S3 or step S4 is performed, the process returns to step S1, and the subsequent processes are repeated until, for example, the power is turned off.

[Effect of the embodiment]
Since the transparent glass 32A reflects light, when the sun is reflected, as shown in FIG. On the other hand, the polished glass 32B diffuses light and suppresses reflection, so that even if the sun is reflected, it can be prevented from becoming difficult to see due to light reflection.

  Therefore, as described above, for example, when the sun is reflected and the front of the display unit 12 is bright, the display surface 32B (surface on the polished glass 32B side) faces the front, so that the sun appears on the display surface 32. Even in the case of being reflected, it can be suppressed that it becomes difficult to see due to the reflection of light. As a result, for example, the user does not need to block the light with his / her hand or adjust the angle at which the user sees his / her head. Therefore, the user can drive safely.

  Further, for example, when the sun is not reflected and the brightness is normal, the display surface 32A (the surface on the transparent glass 32A side) is directed to the front. Sex can be secured.

[Modification]
In the above description, the electronic device 1 is an audio device or a car navigation device mounted on the vehicle, but may be another device mounted on the vehicle. It can also be used for electronic devices other than those for on-vehicle use.

  In the above description, the case where one display panel 21 has two display surfaces 32 has been described as an example. However, two display panels 21 each having one display surface 32 may be provided. . Further, the number of display surfaces 32 is not limited to two, and a larger number of display surfaces 32 may be provided.

  In the above description, the two display surfaces 32 have a configuration in which the front and back surfaces are integrated, that is, a configuration in which the two display surfaces 32 have an angle of 180 degrees, but a configuration having another angle may also be used.

  In the above description, the case where the illuminance sensor 41 is provided on each of the display surfaces 32 has been described as an example. However, for example, one illuminance sensor that can detect the illuminance in front of the display unit 12 regardless of the switching of the display surface 32. Can also be arranged.

  In the above description, the display unit 12 is rotated 180 degrees up and down to switch the display surface 32 facing the front. However, the display unit 12 can be switched by other methods depending on the structure of the display unit 12.

  In the above description, when the display surface 32 facing the front is switched, the top and bottom of the display form is inverted. However, for example, the brightness and color of the display can be switched.

  The functions described above can also be realized by a computer. In that case, a program describing the processing contents of the functions described above is provided. The processing function is realized on the computer by executing the program on the computer. The program describing the processing contents can be recorded on a computer-readable recording medium. Examples of the computer-readable recording medium include a magnetic recording device, an optical disk, a magneto-optical recording medium, and a semiconductor memory. Examples of the magnetic recording device include a hard disk device (HDD), a flexible disk (FD), and a magnetic tape. Optical discs include DVD (Digital Versatile Disc), DVD-RAM, CD-ROM (Compact Disc ROM), CD-R (Recordable) / RW (ReWritable), and the like. Magneto-optical recording media include MO (Magneto-Optics).

  When distributing the program, for example, a portable recording medium such as a DVD or a CD-ROM in which the program is recorded is sold. It is also possible to store the program in a storage device of a server computer and transfer the program from the server computer to another computer via a network.

  The embodiments of the present invention are not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

  The process shown in the flowchart is executed in parallel or individually even if each step is not necessarily processed in time series, as well as processes performed in time series in the order described. It includes processing that. Further, the processing can be omitted as appropriate.

  DESCRIPTION OF SYMBOLS 1 Electronic device, 11 Main body, 12 Display part, 21 Display panel, 31 Display tube, 32A Transparent glass, 32B Polished glass, 41A Illuminance sensor, 41B Illuminance sensor, 101 Drive part, 102 Control part

Claims (5)

In a display control apparatus having a display unit composed of a first display surface and a second display surface,
Control means for controlling an attitude of the display unit so that the first display surface or the second display surface faces a predetermined direction;
Detecting means for detecting illuminance in front of the first display surface or the second display surface;
The display control device, wherein the control means switches the display surface facing the predetermined direction in accordance with the illuminance ahead of the display surface facing the predetermined direction. The display control device according to claim 1,
The display unit is configured by laminating a transparent glass on one surface of an inorganic EL display unit and a polished glass on the other surface,
The first display surface is a surface on the transparent glass side, and the second display surface is a surface on the polished glass side,
When the intensity of the illuminance detected by the detection unit is greater than or equal to a predetermined threshold, the control unit controls the display unit so that the second display surface faces the predetermined direction. Rotating and rotating the display unit so that the first display surface faces the predetermined direction when the detected illuminance magnitude is smaller than or less than a predetermined threshold value. Display control device. The display control device according to claim 2,
The display control device, wherein the control means reverses the display of the display displayed on the display unit when switching a display surface facing the predetermined direction. In a display control method for a display control apparatus having a display unit including a first display surface and a second display surface,
A control step of controlling the posture of the display unit so that the first display surface or the second display surface faces a predetermined direction;
Detecting the illuminance in front of the first display surface or the second display surface,
The display control method characterized in that the control step switches the display surface facing the predetermined direction according to the illuminance ahead of the display surface facing the predetermined direction. A program for controlling the posture of the display unit of a display control device having a display unit composed of a first display surface and a second display surface,
A control step of controlling the posture of the display unit so that the first display surface or the second display surface faces a predetermined direction;
Detecting the illuminance in front of the first display surface or the second display surface,
The program for causing the computer to execute control processing, wherein the control step switches the display surface facing the predetermined direction according to the illuminance in front of the display surface facing the predetermined direction.