JP2014174662A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device that can efficiently save electric power by changing an effective area of a touch panel according to the distance to a user even when the display device has a large screen and a touch panel function.SOLUTION: A touch panel control section (1b) controls a touch panel (3) so as to set the whole touch panel (3) as an effective area, to set a part of the touch panel (3) from an edge side of a display section (2) which faces a person to the opposite edge side as an effective area, or to set the whole touch panel (3) as an ineffective area according to the distance to the person which is measured by an opposite person distance measurement section (S1).

Description

  The present invention relates to a display device, and more particularly to a display device with a touch panel function.

  As a conventional first display device, contact sensor means for sensing that a human body is in contact with a casing, face sensor means for sensing that a person is facing the display means, and controlling power supply For example, Japanese Patent Application Laid-Open No. 2004-46386 (Patent Document 1) includes a control unit that performs the above control. In the first conventional display device described above, when the power saving mode instructing to minimize the power supply to the main body is set and the contact sensor means does not sense contact with the housing, or the face sensor means Is detected or not suitable for the display means, the control means cuts or reduces the power supply to unnecessary parts that are not currently used. Thus, the first conventional display device turns the screen on and off depending on whether or not a person is in front using a human sensor attached to the front of the television screen.

  Further, the conventional second display device is a display that can be switched between two states of an activated state (on) and a non-activated state (off), and can detect that the user is in the vicinity. There is a device in which a capacitance sensor and a means for starting up a display in accordance with the output of the capacitance sensor are incorporated (for example, see Japanese Patent Application Laid-Open No. 2007-526509 (Patent Document 2)).

JP 2004-46386 A JP 2007-526509 A

  The conventional first display device does not partially turn on / off the display means during use by a person, and the conventional second display device has a capacitance and has a display in hand. The screen cannot be partially turned on / off only by setting the display to the activated state (on) with the electrostatic capacity of the display and only the activated state (on) and non-activated state (off) of the display.

  As described above, the conventional first and second display devices can save power by controlling on / off of a terminal or a display using a human sensor, or can use a contact sensor or a capacitance sensor. The power is turned on when a person holds the device in his hand to save power.

  However, in the case of a large-screen display device that is installed horizontally on a table or the like, the usage status of “holding in hand” is not assumed, so the technologies such as the conventional first and second display devices described above are not used. Cannot be used.

  Further, in the above-described conventional first and second display devices, in the case of a display device with a large-screen touch panel function, it is difficult to say that power saving can be efficiently achieved by on / off control of the entire touch panel. Depending on the size of the touch panel, Since the touch panel is effective to the extent that the user cannot reach, there is a problem that wasteful current consumption occurs.

  Accordingly, an object of the present invention is to provide a display device that can efficiently save power by changing the effective area of the touch panel according to the distance from the user even in a display device with a large-screen touch panel function. It is in.

In order to solve the above problems, a display device according to the present invention provides:
A rectangular display for displaying an image on the screen;
A touch panel arranged on the screen of the display unit;
An interpersonal distance measuring unit for detecting a person existing in the outer direction of at least one side of the display unit and measuring a distance to the person;
A touch panel control unit that controls the touch panel based on the distance between the person and the person measured by the interpersonal distance measurement unit;
The touch panel control unit
Depending on the distance to the person measured by the interpersonal distance measuring unit, all of the touch panel is set as an effective area, or the side from the side of the display unit facing the person to the opposite side The touch panel is controlled so that a part of the touch panel is set as an effective area, or all of the touch panel is set as an invalid area.

  As is clear from the above, according to the present invention, the touch panel is controlled by the touch panel control unit, and all of the touch panel is set in the invalid area according to the distance to the person measured by the interpersonal distance measurement unit, Or, by setting a part of the touch panel as an effective area from the side of the display unit facing the person to the opposite side, or by setting all of the touch panel as an effective area, a large-screen touch panel function is provided. Also in the display device, it is possible to realize a display device that can efficiently save power by changing the effective area of the touch panel according to the distance from the user.

FIG. 1 is a block diagram showing the configuration of the display device according to the first embodiment of the present invention. FIG. 2 is a schematic diagram of a main part of the display device. FIG. 3 is a schematic diagram when the entire area of the touch panel of the display device is validated. FIG. 4 is a schematic diagram when a partial area of the touch panel of the display device is validated. FIG. 5 is a schematic diagram when the entire area of the touch panel of the display device is invalidated. FIG. 6 is a schematic diagram when the touch panel of the display device is set in a standby state. FIG. 7 is a flowchart for explaining the processing operation of the control device of the display device. FIG. 8 is a schematic view of a display device according to a second embodiment of the present invention. FIG. 9 is a schematic diagram when the entire area of the touch panel of the display device is validated. FIG. 10 is a schematic diagram when a partial area of the touch panel of the display device is invalidated. FIG. 11 is a schematic diagram when the entire area of the touch panel of the display device is invalidated. FIG. 12 is a schematic diagram when the touch panel of the display device is set in a standby state. FIG. 13 is a flowchart for explaining the processing operation of the control device of the display device.

  Hereinafter, the display device of the present invention will be described in detail with reference to embodiments shown in the drawings.

[First Embodiment]
FIG. 1 is a block diagram showing the configuration of the display device according to the first embodiment of the present invention.

  As shown in FIG. 1, the display device 10 according to the first embodiment includes a control device 1, a rectangular display unit 2 that receives a display control signal from the control device 1 and displays an image on a screen, and a display. The touch panel 3 arranged on the screen of the unit 2 and outputs an operation signal to the control device 1, the flash memory 4 read / written by the control device 1, the RAM (Random Access Memory) 5, the human A human sensor S1 as an example of an interpersonal distance measuring unit that detects the presence of the person and measures the distance to the person. Note that a display panel in which the display unit 2 and the touch panel 3 are integrated may be used.

  The human sensor S1 may be a sensor that detects the presence of a person by detecting a temperature change of the ambient temperature using infrared rays and measures the distance to the person, or an ultrasonic sensor equipped with an ultrasonic transceiver. A known system such as a sound wave system or a system that transmits visible light and detects the reflected light can also be applied. Further, as the human sensor, a face recognition process that is widely used in digital cameras is applied, and the presence of a person is detected by performing the face recognition process on the captured image captured by the imaging unit, and the distance to the person May be measured by other distance measuring means.

  The control device 1 includes a microcomputer and an input / output circuit, and is measured by a distance determination unit 1a that determines a distance from a person based on a detection signal from the human sensor S1 and an interpersonal distance measurement unit 1a. The touch panel control unit 1b for controlling the touch panel 3 and the display control unit 1c for controlling the display unit 2 are provided based on the distance between the user and the person.

  FIG. 2 is a schematic view of the main part of the display device 10. As shown in FIG. 2, the display device 10 includes a frame portion 11 that is attached so as to surround the rectangular display portion 2 on which the touch panel 3 is arranged on the screen, and an intermediate between one side H <b> 1 of the frame portion 11. Is provided with a human sensor S1. Here, human sensor S1 detects the person who exists in the outside direction of one side H1 of display part 2 in fan-like detection range A, and measures the distance with the person. In the detection range A, a first determination distance X, a second determination distance Y, and a third determination distance Z are set in order from the human sensor S1.

Here, the first determination distance X, the second determination distance Y, and the third determination distance Z are set such that the distance between the human sensor S1 and the person is L.
L ≦ X: Position where the entire screen of the display unit 2 can be reached X <L ≦ Y: Position where the hand can reach a part of the screen of the display unit 2 Y <L ≦ Z: Hand cannot reach the screen of the display unit 2 Position (within detection range of human sensor S1)
Z <L: Position where the hand cannot reach the screen of the display unit 2 (outside the detection range of the human sensor S1)
It is set to become.

  Next, an example in which the effective area of the touch panel 3 is changed according to the distance from the user will be described with reference to FIGS.

  FIG. 3 is a schematic diagram when the entire area of the touch panel 3 of the display device 10 is validated. In FIG. 3, the effective area of the touch panel 3 is represented by arranging rhombuses (hatched portions) in a checkered pattern, and the invalid area is represented by arranging rhombuses without hatched lines (similar to FIGS. 4 and 5).

In FIG. 3, the position where the hand reaches the entire screen of the display unit 2, that is, the distance L between the human sensor S1 and the person is
L ≤ X
When it is, the touch-panel control part 1b makes all the touch panels 3 an effective area | region.

  FIG. 4 is a schematic diagram when a partial area of the touch panel 3 of the display device 10 is validated.

In FIG. 4, the position where the hand reaches a part of the screen of the display unit 2, that is, the distance L between the human sensor S1 and the person is
X <L ≦ Y
When it is, the touch-panel control part 1b makes some touch panels 3 an effective area | region.

  Here, the touch panel control unit 1b is a person who measures the width W of the effective area of the touch panel 3 from the one side (H1) side of the display unit 2 facing the person toward the opposite side (H3) by the human sensor S1. Is set to be inversely proportional to the distance L. Therefore, when the distance L between the human sensor S1 and the person satisfies the condition of X <L ≦ Y, the width W of the effective area of the touch panel 3 becomes longer as the distance L between the person and the display device 10 is closer. The width W of the effective area of the touch panel 3 becomes shorter as the distance L with the person is farther from the display device 10.

  FIG. 5 is a schematic diagram when the touch panel 3 of the display device 10 is invalidated.

In FIG. 5, the position where the hand cannot reach the screen of the display unit 2 (within the detection range of the human sensor S1), that is, the distance L between the human sensor S1 and the person is
Y <L ≤ Z
When it is, the touch-panel control part 1b makes all the touch panels 3 an invalid area | region.

  Next, FIG. 6 shows a schematic diagram when the touch panel 3 of the display device 10 is set in a standby state.

In FIG. 6, the position where the hand cannot reach the screen of the display unit 2 (outside the detection range of the human sensor S1), that is, the distance L between the human sensor S1 and the person is
Z <L
In the case, the touch panel control unit 1b sets all of the touch panel 3 as invalid areas, and the display control unit 1c sets the display unit 2 in a standby state. Here, in the standby state of the display unit 2, for example, in the configuration of the liquid crystal display and the backlight, both power supplies are turned off.

  Next, the processing operation of the control device 1 of the display device 10 will be described according to the flowchart of FIG.

First, when the process is started, the presence of a person is detected by the human sensor S1 in step S1, and the distance L to the person is measured.
Next, the process proceeds to step S2, where it is determined whether or not L ≦ X by the distance determination unit 1a, and if it is determined that L ≦ X, the process proceeds to step S7, and the entire area of the touch panel 3 is enabled by the touch panel control unit 1b. Then, the process returns to step S1.
On the other hand, if it progresses to step S2 and it determines with it not being L <= X, it will progress to step S3 and will determine whether it is X <L <= Y by the distance determination part 1a.
And if it determines with it being X <L <= Y at step S3, it will progress to step S8 and will validate the partial area | region of the touch panel 3 according to the distance L with a person.
On the other hand, if it is determined in step S3 that X <L ≦ Y, the process proceeds to step S4, and the distance determination unit 1a determines whether Y <L ≦ Z.
Next, when it is determined in step S4 that Y <L ≦ Z, the process proceeds to step S9, the touch panel control unit 1b invalidates the entire area of the touch panel 3, and then returns to step S1.
On the other hand, if it is determined in step S4 that Y <L ≦ Z is not satisfied, the process proceeds to step S5, where the entire touch panel 3 is set to an invalid area by the touch panel control unit 1b and the display unit 2 is set in the standby state by the display control unit 1c. Return to step S1.

  According to the display device 10 configured as described above, according to the distance L1 between the touch panel control unit 1b and a person existing on the outer side of one side of the display unit 2 measured by the human sensor S1 that is the interpersonal distance measurement unit, Since the effective area of the touch panel 3 is set from the side of the display unit 2 facing the person toward the opposite side, for example, when a human hand reaches the entire touch panel 3, the entire touch panel 3 is enabled and When the hand reaches a partial area of the touch panel 3, the partial area of the touch panel 3 where the hand can reach, that is, the area in front of the person is validated. Further, when the human hand does not reach the touch panel 3, the touch panel 3. The whole is invalid. Thus, by changing the effective area of the touch panel 3 according to the distance L1 with the user, even in a display device with a large-screen touch panel function, power can be efficiently saved. In particular, the present invention is effective when a large-screen display device with a touch panel function having human sensors serving as interpersonal distance measuring units on four sides is horizontally installed.

  In addition, the touch panel control unit 1b determines that the distance L1 to the person existing in the outer direction of each side of the display unit 2 measured by the human sensor S1 is equal to or less than a preset first determination distance X. When the unit 1a determines, the entire area of the touch panel 3 is validated. Further, the distance determination unit 1a when the distance L1 to the person existing in the outer direction of each side of the display unit 2 measured by the human sensor S1 is longer than the first determination distance X and equal to or less than the second determination distance Y. Is determined, the partial area of the touch panel 3 is validated from the side of the display unit 2 facing the person toward the opposite side. Thereby, the power saving of the more optimal touch panel 3 can be performed. Further, by setting the width W of the effective area of the touch panel 3 (the width in the direction from the side of the display unit 2 facing the person to the opposite side) to be inversely proportional to the distance L1 with the person, the closer the hand is, the touch panel Since the effective area width W of the touch panel 3 becomes narrower as the hand is farther away, the optimum power saving of the touch panel 3 can be achieved.

  In addition, the distance determination unit 1a determines that the distance L1 to the person existing in the outward direction of each side of the display unit 2 measured by the human sensor S1 is longer than the second determination distance Y by the touch panel control unit 1b. In this case, since the entire area of the touch panel 3 is invalidated, power can be reliably saved when the hand does not reach the touch panel 3.

  In addition, if the distance L1 measured by the human sensor S1 with the person positioned in the outer direction of each side of the display unit 2 is longer than the third determination distance Z (> second determination distance Y), the distance determination unit 1a. When the display control unit 1c puts the display unit 2 into a standby state, the power consumption of the display unit 2 can be reduced when a person is far away from seeing the screen of the display unit 2. .

[Second Embodiment]
FIG. 8 is a schematic view of a display device 20 according to the second embodiment of the present invention. The display device 20 of the second embodiment has the same configuration as the display device 10 of the first embodiment except for the operations of the human sensors S1 and S2 and the control device 1, and the same reference is made to the same components. Reference is made to FIG.

  As shown in FIG. 8, the display device 20 according to the second embodiment includes a frame unit 11 attached so as to surround the periphery of the rectangular display unit 2 on which the touch panel 3 is arranged on the screen, and the frame unit. Human motion sensors S1 and S2 are provided in the middle of one of the eleven short sides H1 and H3 (H1) and one of the long sides H2 and H4 (H2).

  In FIG. 8, the distance from the person measured by the human sensor S1 on the side H1 is L1, and the distance from the person measured by the human sensor S2 on the side H2 is L2.

  Next, an example in which the effective area of the touch panel 3 is changed according to the distance from the user will be described with reference to FIGS.

  FIG. 9 shows a schematic diagram when the entire area of the touch panel 3 of the display device 20 is validated.

  In FIG. 9, the first determination distance X1 of the fan-shaped detection range A1 on the side H1 side of the display unit 2 where the human sensor S1 is arranged is a fan shape on the side H2 side of the display unit 2 where the human sensor S2 is arranged. The first determination distance X2 of the detection range A2.

The position where the hand reaches the entire screen of the display unit 2, that is, the distance to the person measured by the human sensor S1, is L1, and the distance to the person measured by the human sensor S2 on the side H2 is L2. Then
L1 ≤ X1
L2 ≤ X2
When at least one of the above is satisfied, the touch panel control unit 1b sets the entire touch panel 3 as an effective area.

  Here, the display device 20 has the human sensor arranged on two sides, but the generalized condition of arranging the human sensor Sm on the side Hm (m is 1, 2, 3, 4) is considered. The distance to the person measured by each human sensor Sm is represented by Lm, and the first determination distance Xm, the second determination distance Ym, the second determination distance Am corresponding to the fan-shaped detection range Am of each human sensor Sm. 3 It is assumed that a determination distance Zm is set.

This
Lm ≤ Xm
When there is at least one Lm that satisfies the condition, the touch panel control unit 1b sets the entire touch panel 3 as an effective area.

  Next, FIG. 10 shows a schematic diagram when a partial area of the touch panel 3 of the display device 20 is invalidated.

  In FIG. 10, the first determination distance X1 and the second determination distance Y1 of the fan-shaped detection range A1 on the side H1 side of the display unit 2 where the human sensor S1 is arranged, and the display unit 2 where the human sensor S2 is arranged. The first determination distance X2 and the second determination distance Y2 of the fan-shaped detection range A2 on the side H2 side of FIG.

When at least one person is present at a position where a part of the display unit 2 can be reached, that is, the distance to the person measured by the human sensor S1 is L1, and the human sensor S2 on the side H2 measures the distance. If the distance to a person is L2,
X1 <L1 ≦ Y1
X2 <L2 ≦ Y2
When at least one of the above conditions is satisfied, the touch panel control unit 1b sets a part of the touch panel 3 as an effective area. However, X1 <L1 and X2 <L2 are assumed.

  In FIG. 10, both of the above conditions are satisfied, and the touch panel control unit 1b determines the width W1 of the effective area of the touch panel 3 from the side H1 side of the display unit 2 facing the person toward the opposite side H3, and the human sensor S1. The width W2 of the effective area of the touch panel 3 from the side H2 side of the display unit 2 facing the person to the opposite side H4 side is set to be inversely proportional to the distance L1 with the person measured by the human sensor S1. Is set so as to be inversely proportional to the distance L2 to the person measured.

  At this time, the effective area (width W1) of the touch panel 3 set from the side H1 side of the display unit 2 facing the person toward the opposite side H3 side, and the side H2 side of the display unit 2 facing the person to the opposite side H4 side The effective area (width W2) of the touch panel 3 set toward is overlapped at a corner portion where the side H1 and the side H2 are adjacent to each other.

  Here, the display device 20 arranges human sensors on two sides, but considering a generalized case where human sensors Sm are arranged on m sides (m is an integer of 2 or more and 4 or less), The distance to the person measured by each human sensor is represented by Lm, and the first determination distance Xm, the second determination distance Ym, and the third determination distance Zm corresponding to the fan-shaped detection range of each human sensor. Shall be set.

This
Xm <Lm ≦ Ym
When there is at least one Lm that satisfies the condition, the touch panel control unit 1b sets a part of the touch panel 3 as an effective area. However, other Lm that does not satisfy the above condition is longer than Xm.

  Next, FIG. 11 shows a schematic diagram when the touch panel 3 of the display device 20 is invalidated.

  In FIG. 11, the first determination distance X1, the second determination distance Y1, and the third determination distance Z1 of the fan-shaped detection range A1 on the side H1 of the display unit 2 where the human sensor S1 is disposed are set. The first determination distance X2, the second determination distance Y2, and the third determination distance Z2 of the fan-shaped detection range A2 on the side H2 side of the arranged display unit 2 are used.

When at least one person exists in a position where the hand cannot reach the screen of the display unit 2 (within the detection range of the human sensor S1), that is, the distance to the person measured by the human sensor S1 is L1, When the distance from the person measured by the H2 human sensor S2 is L2,
Y1 <L1 ≦ Z1
Y2 <L2 ≦ Z2
When at least one of the above conditions is satisfied, the touch panel control unit 1b sets all of the touch panel 3 as invalid areas. However, Y1 <L1 and Y2 <L2 are assumed.

  In FIG. 11, the person existing on the side H1 side is at a position farther than the third determination distance Z1, and the person existing on the side H2 side is present at a position satisfying the condition of Y2 <L2 ≦ Z2 on the side H2 side. Yes.

  Here, the display device 20 has human sensors arranged on two sides, but considering the generalized case where human sensors are arranged on m sides (m is an integer of 2 or more and 4 or less), The distance from the person measured by the human sensor is represented by Lm. The first determination distance Xm, the second determination distance Ym, and the third determination distance Zm are set corresponding to the fan-shaped detection range of each human sensor.

This
Ym <Lm ≦ Zm
When there is at least one Lm that satisfies the condition, the touch panel control unit 1b sets the entire touch panel 3 as an invalid area. However, other Lm that does not satisfy the above condition is longer than Ym.

  FIG. 12 is a schematic diagram when the touch panel 3 of the display device 20 is set in a standby state.

In FIG. 12, when a person is present at a position where the hand cannot reach the screen of the display unit 2 (outside the detection range of the human sensor S1), that is, the distance from the person measured by the human sensor S1 is L1, When the distance from the person measured by the human sensor S2 on the side H2 is L2,
Z1 <L1
Z2 <L2
When both of the conditions are satisfied, the touch panel control unit 1b sets the entire touch panel 3 and the display control unit 1c sets the display unit 2 in a standby state. Here, in the standby state of the display unit 2, for example, in the configuration of the liquid crystal display and the backlight, both power supplies are turned off.

  Next, the processing operation of the control device 1 of the display device 20 will be described according to the flowchart of FIG.

First, when the process starts, in step S11, the presence of a person is detected by the human sensor Sm, and the distance Lm with the person is measured. Here, Sm is on the side Hm (m is 1, 2, 3, 4).
Next, the process proceeds to step S12, where it is determined whether or not there is one or more m satisfying Lm ≦ Xm by the distance determining unit 1a, and when it is determined that there is one or more m satisfying Lm ≦ Xm, the process proceeds to step S17. After proceeding and enabling the entire area of the touch panel 3 by the touch panel control unit 1b, the process returns to step S11.
On the other hand, if it progresses to step S12 and it determines with there being no m which satisfy | fills Lm <= Xm, it will progress to step S13 and will determine whether there exists one or more m which satisfy | fills Xm <Lm <= Ym by the distance determination part 1a.
If it is determined in step S13 that there is one or more m satisfying Xm <Lm ≦ Ym, the process proceeds to step S18, and a partial area of the touch panel 3 is validated according to the distance Lm with the person.
Here, when there are two or more m satisfying Xm <Lm ≦ Ym, the effective areas of the touch panel 3 for each side of the display unit 2 can be overlapped.
On the other hand, if it is determined in step S13 that there is no m satisfying Xm <Lm ≦ Ym, the process proceeds to step S14, and the distance determination unit 1a determines whether there is one or more m satisfying Ym <Lm ≦ Zm.
Next, when it is determined in step S14 that there is one or more m satisfying Ym <Lm ≦ Zm, the process proceeds to step S19, the touch panel control unit 1b invalidates the entire area of the touch panel 3, and then returns to step S11.
On the other hand, if it is determined in step S14 that there is no m satisfying Ym <Lm ≦ Zm, the process proceeds to step S15, the touch panel control unit 1b invalidates the entire area of the touch panel 3, and the display control unit 1c waits for the display unit 2. After setting, the process returns to step S11.

  Further, the display device 20 of the second embodiment has the same effect as the display device 10 of the first embodiment.

  Further, when there are a plurality of users around the display device 20, the effective area of the touch panel 3 can be overlapped in accordance with the positional relationship of each person so that the power consumption of the touch panel 3 can be more efficiently reduced. Can be planned.

  In the first and second embodiments, the display devices 10 and 20 in which the human sensors S1 and S2 are arranged in the frame portion 11 have been described. However, in the display device in which the frame portion is not provided and the entire screen is a display portion, You may arrange | position the sensor which detects the person who exists in the outer side direction of the at least one side of a part.

  Although specific embodiments of the present invention have been described, the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the present invention.

The display device of the present invention is
A rectangular display unit 2 for displaying an image on the screen;
A touch panel 3 disposed on the screen of the display unit 2;
Interpersonal distance measuring units S1, S2, Sm for detecting a person existing in the outer direction of at least one side of the display unit 2 and measuring the distance to the person;
A touch panel control unit 1b for controlling the touch panel 3 based on the distance between the person measured by the interpersonal distance measuring units S1, S2 and Sm;
The touch panel controller 1b
Depending on the distance to the person measured by the interpersonal distance measuring unit S1, S2, Sm, either all of the touch panel 3 is set as an invalid area, or the side of the display unit 2 facing the person The touch panel 3 is controlled so that a part of the touch panel 3 is set as an effective area from the side toward the opposite side or all the touch panel 3 is set as an effective area.

  According to the above configuration, the touch panel control unit 1b faces the person according to the distance to the person existing in the outer direction of at least one side of the display unit 2 measured by the interpersonal distance measurement units S1, S2, and Sm. Since the effective area of the touch panel 3 is set from the side of the display unit 2 toward the opposite side, for example, when a human hand reaches the entire touch panel 3, the entire touch panel 3 is enabled and the human hand is When reaching a partial area, the partial area of the touch panel 3 that can be reached, that is, the area in front of the person is valid, and when the human hand does not reach the touch panel 3, the entire touch panel 3 is invalidated. . Thus, by changing the effective area of the touch panel 3 according to the distance to the user, even in a display device with a large-screen touch panel function, power can be efficiently saved. In particular, the present invention is effective when a large-screen display device with a touch panel function having sensors serving as interpersonal distance measuring units on four sides is installed horizontally.

In the display device of one embodiment,
The touch panel controller 1b
When a plurality of persons existing in the outer direction of each side of the display unit 2 detected by the interpersonal distance measuring units S1, S2, Sm exist in the outer direction of the plurality of sides of the display unit 2, and When setting a part of the touch panel 3 as an effective area from the side to the opposite side for each side of the display unit 2 facing the person detected by the interpersonal distance measuring units S1, S2, Sm, The effective area of the touch panel 3 for each side of the display unit 2 can be overlapped.

  According to the above-described embodiment, when there are a plurality of users around the device, the effective area of the touch panel 3 is changed so as to be able to overlap according to the positional relationship of each person, thereby more efficiently saving the power of the touch panel 3. Can be achieved.

In the display device of one embodiment,
A distance determination unit 1a for determining a distance from a person existing in the outer direction of at least one side of the display unit 2 measured by the interpersonal distance measurement units S1, S2, Sm;
The touch panel controller 1b
The distance determination unit 1a when the distance measured by the interpersonal distance measurement units S1, S2, Sm and the person existing in the outer direction of each side of the display unit 2 is equal to or less than a preset first determination distance X. Is determined, all the touch panel 3 is set as an effective area,
A second determination distance that is longer than the first determination distance X and set in advance is a distance to a person that exists in the outer direction of each side of the display unit 2 measured by the interpersonal distance measurement units S1, S2, and Sm. When the distance determination unit 1a determines that it is equal to or less than Y, a part of the touch panel 3 is set as an effective area from the side of the display unit 2 facing the person toward the opposite side.

  According to the above-described embodiment, the touch panel control unit 1b performs a first determination in which distances to persons existing in the outer direction of each side of the display unit 2 measured by the interpersonal distance measurement units S1, S2, and Sm are set in advance. When the distance determination unit 1a determines that the distance X is equal to or less than the distance X, the entire area of the touch panel 3 is validated. Moreover, when the distance with the person which exists in the outer side direction of each edge | side of the display part 2 measured by interpersonal distance measurement part S1, S2, Sm is longer than the 1st determination distance X and below the 2nd determination distance Y. When the distance determination unit 1a determines, the partial area of the touch panel 3 is validated from the side of the display unit 2 facing the person toward the opposite side. Thereby, the power saving of the more optimal touch panel 3 can be performed. For example, the width of the effective area of the touch panel 3 (the width in the direction from the side of the display unit 2 facing the person to the opposite side) is set to be inversely proportional to the distance to the person. Since the width of the effective area becomes wider and the width of the effective area of the touch panel 3 becomes narrower as the hand is farther, the power consumption of the optimal touch panel 3 can be reduced by setting only the reachable area as the effective area.

In the display device of one embodiment,
The touch panel controller 1b
The distance determination unit 1a determines that the distance measured by the interpersonal distance measurement units S1, S2, Sm and the person existing in the outer direction of each side of the display unit 2 is longer than the second determination distance Y. When this is done, the entire touch panel 3 is set as an invalid area.

  According to the above-described embodiment, the distance from the person existing in the outer direction of each side of the display unit 2 measured by the interpersonal distance measuring units S1, S2, and Sm by the touch panel control unit 1b is greater than the second determination distance Y. When the distance determination unit 1a determines that the length is long, the entire area of the touch panel 3 is invalidated, so that power can be reliably saved when the hand does not reach the touch panel 3.

In the display device of one embodiment,
A third determination distance Z in which the distance between the person positioned in the outer direction of each side of the display unit 2 and measured by the interpersonal distance measurement units S1, S2, Sm is set longer than the second determination distance Y in advance. When the distance determining unit 1a determines that the distance is longer, the display control unit 1c is provided to place the display unit 2 in a standby state.

  According to the said embodiment, the distance with the person located in the outer side direction of each edge | side of the display part 2 measured by interpersonal distance measurement part S1, S2, Sm is 3rd determination distance Z (> 2nd determination distance Y). When the distance determination unit 1a determines that the display unit is longer than the display unit, the display control unit 1c puts the display unit 2 into a standby state. Can also be reduced.

DESCRIPTION OF SYMBOLS 1 ... Control apparatus 1a ... Distance determination part 1b ... Touch panel control part 1c ... Display control part 2 ... Display part 3 ... Touch panel 4 ... Flash memory 5 ... RAM
DESCRIPTION OF SYMBOLS 10,20 ... Display apparatus 11 ... Frame part S1, S2, Sm ... Human sensor H1, H2, H3, H4 ... Side

Claims (5)

A rectangular display for displaying an image on the screen;
A touch panel arranged on the screen of the display unit;
An interpersonal distance measuring unit for detecting a person existing in the outer direction of at least one side of the display unit and measuring a distance to the person;
A touch panel control unit that controls the touch panel based on the distance between the person and the person measured by the interpersonal distance measurement unit;
The touch panel control unit
Depending on the distance to the person measured by the interpersonal distance measuring unit, all of the touch panel is set as an effective area, or the side from the side of the display unit facing the person to the opposite side A display device that controls the touch panel so that a part of the touch panel is set as an effective area or all the touch panel is set as an invalid area. The display device according to claim 1,
The touch panel control unit
When the plurality of persons existing in the outer direction of each side of the display unit detected by the interpersonal distance measuring unit exist in the outer direction of the plurality of sides of the display unit, and detected by the interpersonal distance measuring unit. In addition, when setting a part of the touch panel as an effective area from the side to the opposite side for each side of the display unit facing the person, the effective area of the touch panel for each side of the display unit can be overlapped. A display device characterized by being made. The display device according to claim 1 or 2,
A distance determination unit for determining a distance from a person existing in an outer direction of at least one side of the display unit measured by the interpersonal distance measurement unit;
The touch panel control unit
When the distance determination unit determines that the distance to the person existing in the outer direction of each side of the display unit measured by the interpersonal distance measurement unit is equal to or less than a preset first determination distance, Set all as valid areas and
The distance determination is such that the distance between the person and the person existing in the outer direction of each side of the display unit measured by the interpersonal distance measuring unit is longer than the first determination distance and equal to or less than a preset second determination distance. A display device characterized in that when the unit determines, a part of the touch panel is set as an effective region from the side of the display unit facing the person toward the opposite side. The display device according to claim 3,
The touch panel control unit
When the distance determination unit determines that the distance to the person existing in the outer direction of each side of the display unit measured by the interpersonal distance measurement unit is longer than the second determination distance, all the touch panels are A display device that is set in an invalid area. The display device according to claim 4,
The distance determination unit when the distance measured by the interpersonal distance measurement unit is longer than a third determination distance that is set in advance longer than the second determination distance. A display device comprising: a display control unit that puts the display unit into a standby state when it is determined.

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