JP2011113001A - Image display device and image adjusting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display device and the like capable of displaying a suitable image even when a sensing value showing an illuminance or the like by a sensor changes. <P>SOLUTION: A projector 100 which is a kind of an image display device includes: an operation section 120; an external light measuring section 110 arranged near the operation section 120, which creates a first sensing value; an adjusting section 160 for performing image adjustment; a determining section 180 for determining whether or not, it is in an operation state for indicating a state that the operation section 120 is operated, on the basis of a second sensing value of a human sensor 130. The adjusting section 160 performs the image adjustment based on the first sensing value when it is not in the operation state, and does not perform the image adjustment based on the first sensing value when it is in the operation state. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an image display device and an image adjustment method.

  For example, Japanese Unexamined Patent Application Publication No. 2009-25338 describes that the brightness around the projector is detected and the brightness of the image is adjusted according to the brightness. More specifically, the publication describes a method for determining the brightness of an image according to the ambient illuminance using a brightness specification table and a method for determining the brightness of an image by performing an operation according to the ambient illuminance. Has been.

JP 2009-25338 A

  However, with such a method, it is considered that the brightness of the image fluctuates because it reacts sensitively to changes in ambient illuminance. For example, the brightness of the image fluctuates when a person crosses in front of the illuminance sensor or when a door in a dark room opens. In the case of the method using the table, when the illuminance is around the illuminance threshold of the table, the brightness of the image varies every time the illuminance is measured. In particular, when the illuminance sensor and the operation button are arranged adjacent to each other, the measured value of the illuminance sensor changes during the operation, so that the brightness of the image is likely to fluctuate.

  The same problem occurs when sensors other than the illuminance sensor and operation buttons are arranged adjacent to each other.

  Some aspects of the present invention provide an image display device and an image adjustment capable of displaying an appropriate image even when a sensing value indicating illuminance or the like by a sensor changes by solving the above-described problem A method is provided.

  An image display device according to one aspect of the present invention includes an operation unit, a first sensor that is disposed in proximity to the operation unit and generates a first sensing value, and an adjustment unit that adjusts an image. A state in which the operation unit is operated based on at least one of a second sensing value by the human sensor, operation information from the operation unit, and detection information indicating that the operation unit has been operated. A determination unit that determines whether or not the operation state is indicated, and the adjustment unit adjusts an image based on the first sensing value when the operation state is not the operation state. The image adjustment based on the first sensing value is not performed.

  In addition, an image adjustment method that is one aspect of the present invention includes an image display device that includes an operation unit and a first sensor that is disposed in proximity to the operation unit and generates a first sensing value. The computer causes the first sensor to generate a first sensing value, out of the second sensing value by the human sensor, operation information from the operation unit, and detection information indicating that the operation unit has been operated Based on at least one of the above, it is determined whether or not the operation unit is in an operation state indicating a state in which the operation unit is operated. If not, the image is adjusted based on the first sensing value, and the operation is performed. In the case of the state, the image adjustment based on the first sensing value is not performed.

  According to the present invention, the image display device displays an appropriate image even when the sensing value indicating the illuminance or the like by the sensor changes by adjusting the image according to whether or not it is in the operation state. be able to.

  In addition, the image display device includes a storage unit that stores color tone mode data indicating correspondence between illuminance and color mode, and the first sensor measures illuminance of external light as the first sensing value. When the adjustment unit is not in the operation state, the adjustment unit determines the color tone mode to be applied based on the measurement value and the color tone mode data, and according to the color tone mode. If at least one of the color and brightness of the image is adjusted and the operation state is set, the adjustment currently applied as the adjustment of the image may be continued.

  According to this, the image display device adjusts the color of the image according to whether or not it is in the operation state, so that an appropriate image can be displayed even when the sensing value indicating the illuminance or the like by the sensor changes. Can be displayed.

  In addition, when the adjustment unit transitions from the operation state to the non-operation state, the adjustment unit continues the adjustment currently applied as the image adjustment until a predetermined time elapses after the transition to the non-operation state. May be.

  According to this, the image display apparatus can prevent the occurrence of a situation in which the adjustment content of the image frequently changes due to repeated switching between the operation state and the non-operation state in a short time, and can display a more stable image. it can.

  Further, the image display device causes the first sensor to generate the first sensing value when not in the operation state, and the first sensor causes the first sensor value to be generated when in the operation state. You may include the control part which controls the said 1st sensor so that it may not produce.

  According to this, since the image display apparatus can determine whether or not to generate the first sensing value according to the operation state, an appropriate value can be acquired as the first sensing value. Can be displayed.

  In addition, the image display device includes the human sensor disposed in proximity to the operation unit, and the determination unit determines whether the operation state is based on the second sensing value. Also good.

  According to this, the image display apparatus can appropriately determine whether or not it is in the operation state by using the sensing value of the human sensor.

  The operation unit includes at least one of a focus adjustment unit for adjusting the focus state of the image, a zoom adjustment unit for adjusting the zoom state of the image, and an operation panel unit on which a plurality of operation buttons are arranged. A detection information generation unit that detects that at least one of the focus adjustment unit, the zoom adjustment unit, and the plurality of operation buttons has been operated and generates the detection information, and the determination unit includes: Based on the detection information, it may be determined whether the operation state is present.

  According to this, the image display apparatus can appropriately determine whether or not it is in the operation state by detecting that the operation button or the like has been operated.

  The operation unit includes at least one of a focus adjustment unit for adjusting the focus state of the image, a zoom adjustment unit for adjusting the zoom state of the image, and an operation panel unit on which a plurality of operation buttons are arranged. A focus adjustment unit, the zoom adjustment unit, and an operation information generation unit that generates the operation information indicating at least one operation content of the plurality of operation buttons, and the determination unit includes the operation information. Based on this, it may be determined whether the operation state is present.

  According to this, the image display apparatus can appropriately determine whether or not it is in an operation state by using operation information such as operation buttons.

1 is an external view of a projector according to a first embodiment. It is a functional block diagram of the projector in a 1st Example. It is a flowchart which shows the image adjustment procedure in a 1st Example. It is an external view of the projector in a 2nd Example. It is a functional block diagram of the projector in a 2nd Example. It is a flowchart which shows the image adjustment procedure in 2nd Example. It is an external view of the projector in a 3rd Example. It is a functional block diagram of the projector in a 3rd Example. It is a flowchart which shows the image adjustment procedure in a 3rd Example. It is an external view of the projector in a 4th Example. It is a functional block diagram of the projector in a 4th Example. It is a flowchart which shows the image adjustment procedure in a 4th Example.

  Embodiments in which the present invention is applied to a projector will be described below with reference to the drawings. In addition, the Example shown below does not limit the content of the invention described in the claim at all. In addition, all the configurations shown in the following embodiments are not necessarily essential as means for solving the invention described in the claims.

(First embodiment)
FIG. 1 is an external view of a projector 100 according to the first embodiment. A projector 100, which is a type of image display device, is a portable projector. A plurality of operation buttons 121, a zoom ring 122 for zoom adjustment, a focus ring 123 for focus adjustment, and the like are provided on the top surface facing the ground plane of the projector 100, and between the operation buttons 121 and the zoom ring 122. In addition, an external light measurement unit 110 for measuring the illuminance of external light (for example, illumination light such as a fluorescent lamp, sunlight, etc.) is provided.

  Further, a human sensor 130 is provided on the top surface of the projector 100 so as to be close to (for example, within several centimeters) the operation button 121, the zoom ring 122, and the focus ring 123. The projector 100 determines whether or not the external light measurement unit 110 is in an operation state indicating that the external light measurement unit 110 cannot perform appropriate measurement by operating the operation button 121 or the like based on the sensing value by the human sensor 130. In the operation state, the external light measurement unit 110 does not adjust the image based on the sensing value. When the operation state is not, the external light measurement unit 110 adjusts the image based on the sensing value. Yes.

  Next, functional blocks of the projector 100 having such functions will be described. FIG. 2 is a functional block diagram of the projector 100 according to the first embodiment. The projector 100 measures an illuminance of external light and generates a first sensing value (measurement value) indicating the illuminance, and an external light measurement unit 110 that is a type of a first sensor, and operates according to a user operation. An operation unit 120 that generates information and the like, a human sensor 130 that generates a second sensing value, a storage unit 140 that stores various data, and an update unit 152 that updates the data according to operation information and the like , An image input unit 150 to which an image signal is input from an image supply device such as a PC (Personal Computer), an adjustment unit 160 that adjusts at least one of color and brightness of the image, and a control unit 170 that performs various controls. A determination unit 180 that performs various determinations, and a projection unit 190 that projects the adjusted image.

  In addition, the storage unit 140 indicates illuminance, a color tone mode, color tone mode data 142 indicating color and brightness adjustment values for each color mode, sensing data 144 indicating a first sensing value, a focus state, a zoom state, and the like. Setting data 146 and the like are stored.

  The projector 100 may function as each of these units using the following hardware. For example, the projector 100 is an external light measurement unit 110 is an illuminance sensor, the operation unit 120 is an operation button 121, a zoom ring 122, a focus ring 123, a remote controller, and the human sensor 130 is an infrared sensor, a proximity sensor, or the like. Unit 152, control unit 170, determination unit 180, CPU, etc., storage unit 140, non-volatile memory, etc., image input unit 150, image signal input terminal, converter, etc., adjustment unit 160, CPU, image processing circuit, etc., projection unit 190 A light control device, a lamp, a liquid crystal panel, a liquid crystal driving circuit, a lens, or the like may be used.

  Next, an image adjustment procedure in the projector 100 will be described. FIG. 3 is a flowchart showing an image adjustment procedure in the first embodiment.

  Based on the second sensing value from the human sensor 130, the determination unit 180 determines whether there is no user response to the human sensor 130 every predetermined time (for example, 0.5 seconds) (step S1). ). For example, when the user operates any one of the operation button 121, the zoom ring 122, and the focus ring 123, the user's hand is approaching the human sensor 130, and thus the second sensing value is The value indicates that there is a reaction.

  The determination unit 180 determines that the second sensing value is a numerical value indicating that there is no user response (step S2), and if not, determines that the second sensing value is an operational state (step S3). . In this case, the determination unit 180 may update a flag indicating whether or not the operation state is set, and store the update time of the flag.

  When it determines with not being in an operation state, the determination part 180 determines whether specified time (for example, 1-5 second etc.) passed since it determined with not being in an operation state (step S4).

  When it is determined that the operation state is not reached, the control unit 170 controls the external light measurement unit 110 to measure the illuminance of external light, and the update unit 152 receives the first light from the external light measurement unit 110. 1 sensing value is added to the sensing data 144 (step S5).

  In this case, the adjustment unit 160 determines the color tone mode based on the color tone mode data 142 and the sensing data 144 (step S6). The applied color mode when the illuminance is 0 or more and less than 30 is theater, the applied color mode when the illuminance is 30 or more and less than 100 is Living 1, and the applied color mode when the illuminance is 100 or more and less than 200 is The applied color mode when the illuminance is 200 or more in the living room 2 may be dynamic.

  On the other hand, when it is in the operation state or when the specified time has not elapsed since it was determined that it is not in the operation state, the processes of steps S5 and S6 are not executed. That is, only when a predetermined time has elapsed since it is determined that the state is not the operation state, the illuminance sensing and the color tone mode according to the illuminance are determined.

  The adjustment unit 160 adjusts the image according to the color tone mode determined in step S6 (step S7). More specifically, for example, the adjustment unit 160 determines at least one of the color and brightness of the image (for example, brightness, contrast, hue, color density) according to the adjustment value of the color tone mode indicated by the color tone mode data 142. The sharpness, the color temperature, the aperture ratio of the light control device in the projection unit 190, the brightness of the lamp, and the like), and an image is generated based on the image signal from the image input unit 150.

  The projection unit 190 projects an image on a screen or the like with the adjustment by the adjustment unit 160 (step S8).

  The projector 100 determines whether or not there is an end instruction based on the operation information from the operation unit 120 (step S9). If there is no end instruction, the projector 100 continues a series of processes (steps S1 to S9), and the end instruction is received. If there is, the series of processing ends.

  As described above, according to the present embodiment, the projector 100 adjusts the color of the image or the like according to whether or not it is in the operating state, thereby changing the sensing value indicating the illuminance by the external light measurement unit 110. Even in this case, an appropriate image can be displayed.

  Further, according to the present embodiment, the projector 100 prevents occurrence of a situation in which the adjustment content of the image frequently changes due to repeated switching between the operation state and the non-operation state in a short time, and displays a more stable image. can do.

  Further, according to the present embodiment, the projector 100 is in the operation state by determining whether or not the projector 100 is in the operation state based on the sensing value of the human sensor 130 disposed in proximity to the operation unit 120. Whether or not can be determined appropriately.

(Second embodiment)
The human sensor 130 described above is not indispensable, and it may be determined whether or not the operation state is based on the operation information.

  FIG. 4 is an external view of the projector 101 in the second embodiment. The projector 101 does not have the human sensor 130 and has a function of determining whether or not the operation state is based on the operation information.

  Next, functional blocks of the projector 101 having such functions will be described. FIG. 5 is a functional block diagram of the projector 101 in the second embodiment. The projector 101 has the same configuration as the projector 100, but does not have the human sensor 130, and the determination unit 181 determines whether or not the operation state is based on the operation information from the operation unit 120. Different from the projector 100.

  Next, an image adjustment procedure using the determination unit 181 and the like will be described. FIG. 6 is a flowchart showing an image adjustment procedure in the second embodiment.

  The determination unit 181 is based on operation information from the operation unit 120 (for example, information that the operation button 121 is pressed, information that the zoom ring 122 is operated, information that the focus ring 123 is operated, and the like). It is determined whether there is no operation every time (for example, 0.5 seconds) (step S11). If there is no operation, it is determined that it is not in an operation state (step S2). (Step S3). Since the processing after step S4 is the same as that of the first embodiment, description thereof is omitted.

  As described above, the projector 101 has the same operational effects as the projector 100 of the first embodiment.

  Further, according to the present embodiment, the projector 101 does not have the human sensor 130, and thus can adjust the image according to the operation state with a simpler configuration.

(Third embodiment)
It may be determined whether or not the operation state is based on both the sensing value by the human sensor and the operation information.

  FIG. 7 is an external view of the projector 102 in the third embodiment. FIG. 8 is a functional block diagram of the projector 102 in the third embodiment. The projector 102 has the same configuration as the projector 100, but does not have the zoom ring 122 and the focus ring 123, and the human sensor 131 is arranged on a straight line connecting the operation button 121 and the external light measurement unit 110. Yes. The projector 102 is different from the projector 100 in that the determination unit 182 determines whether or not the operation state is based on both the sensing value by the human sensor 131 and the operation information.

  Next, an image adjustment procedure using the determination unit 182 and the like will be described. FIG. 9 is a flowchart showing an image adjustment procedure in the third embodiment.

  The determination unit 182 determines whether there is no user operation based on the operation information from the operation unit 120 (step S21). Further, the determination unit 182 determines whether or not there is a user reaction on the human sensor 131 based on the second sensing value from the human sensor 131 (step S22).

  When there is no user operation or no user reaction, it is determined that the operation state is not established (step S2). On the other hand, when there is a user's operation and there is a user's reaction (when it is determined that there is a user's operation based on the operation information from the operation unit 120 and the human sensor 131 has a user's reaction) If it is determined, the determination unit 182 determines that the operation state is set (step S3). Since the processing after step S4 is the same as that of the first embodiment, description thereof is omitted.

  As described above, the projector 102 has the same operational effects as the projector 100 of the first embodiment.

  In addition, according to the present embodiment, the projector 102 can make a more appropriate determination by determining whether or not the operation state is based on both the sensing value by the human sensor 131 and the operation information.

  For example, in FIG. 7, when the user presses the operation button 121 from the back side of the projector 102, the external light measurement unit 110 is not covered with the user's hand and can appropriately measure the illuminance. On the other hand, when the user presses the operation button 121 from the front side of the projector 102, the external light measurement unit 110 is covered with the user's hand and cannot properly measure the illuminance.

  According to the present embodiment, the projector 102 can make an appropriate determination according to each of these cases, and can adjust the image more appropriately.

(Fourth embodiment)
The case where the sensing value changes is not limited to the case where the external light measurement unit 110 is provided on the top surface of the projectors 100 to 102. For example, the same applies when the imaging unit is provided in front of the projector. The determination in step S4 is not essential, and the first sensor may generate the first sensing value regardless of the operation state.

  FIG. 10 is an external view of the projector 103 in the fourth embodiment. An imaging unit 111 is provided in front of the projector 103, and a human sensor 132 is provided in the vicinity of the imaging unit 111. In the present embodiment, the projector 103 has a function of determining whether or not the operation state is based on the sensing value of the human sensor 132.

  Next, functional blocks of the projector 103 having such functions will be described. FIG. 11 is a functional block diagram of the projector 103 in the fourth embodiment. The projector 103 has the same configuration as that of the projector 100, but includes an imaging unit 111 that is a kind of first sensor instead of the external light measurement unit 110, and the update unit 152 receives the first sensing value from the imaging unit 111. The sensing data 145 of the storage unit 141 is updated on the basis of the image data, the determination unit 183 determines whether or not the operation state is based on the second sensing value from the human sensor 132, and the control unit 171 controls the imaging unit 111. The color tone mode data 142 is not stored in the storage unit 141, and the adjustment unit 161 is different from the projector 100 in that the brightness of the image is adjusted based on the sensing data 145. Note that the imaging unit 111 may be, for example, a CMOS sensor, a CCD sensor, or the like.

  Next, an image adjustment procedure using the determination unit 183 and the like will be described. FIG. 12 is a flowchart showing an image adjustment procedure in the fourth embodiment.

  The control unit 171 causes the imaging unit 111 to capture an image projected on a screen or the like at regular time intervals (for example, 0.5 seconds), and the update unit 152 is based on the first sensing value from the imaging unit 111. Then, the sensing data 145 is updated (step S31).

  Based on the second sensing value from the human sensor 130, the determination unit 183 determines whether there is no user response in the human sensor 132 every predetermined time (for example, 0.5 seconds) (step S32). ). If the second sensing value is a numerical value indicating that there is no user response, the determining unit 183 determines that it is not in the operating state (step S33), and otherwise determines that it is in the operating state (step S34). .

  When it is determined that the state is not the operation state, the adjustment unit 161 adjusts the brightness of the image based on the sensing data 145 to generate an image (step S35). In the operation state, the adjustment unit 161 continues the current brightness adjustment (does not change the brightness adjustment level).

  The projection unit 190 projects the image generated on the liquid crystal panel or the like (step S36). The projector 103 determines whether or not there is an end instruction based on the operation information from the operation unit 120 (step S36). If there is no end instruction, the projector 103 continues a series of processes (steps S31 to S36), and the end instruction is received. If there is, the series of processing ends.

  As described above, the projector 103 has the same operational effects as the projector 100 of the first embodiment. Further, according to the present embodiment, the projector 103 does not adjust the brightness of the image when the imaging unit 111 is covered by the user's hand or the like, thereby causing a situation in which the brightness of the image changes abruptly. Therefore, the image can be adjusted appropriately.

(Other examples)
In addition, application of this invention is not limited to the Example mentioned above, A various deformation | transformation is possible. For example, the operation unit 120 includes a detection information generation unit that detects that any one of the operation button 121, the zoom ring 122, and the focus ring 123 is operated, and generates detection information, and the determination units 180 to 183 are detection units. Based on the information, it may be determined whether or not it is in an operation state.

  In addition, the specified time in the determination in step S4 described above may be a time from when it is determined that the operation state is once set until it is determined that the operation state is not set. For example, as described above, the determination unit 180 can appropriately determine the specified time by updating a flag indicating whether or not the operation state is set and storing the update time of the flag.

  Further, the adjustment of the image by the adjustment units 160 and 161 is not limited to the adjustment of the color and brightness of the image, and may be, for example, correction of trapezoidal distortion of the image. Moreover, you may make a user set whether the image adjustment based on a 1st sensing value is performed when it is not an operation state.

  Moreover, the computer which projector 100-103 has may read the program memorize | stored in the information storage medium, and may function as the determination part 180 grade | etc.,. As such an information storage medium, for example, a CD-ROM, DVD-ROM, ROM, RAM, HDD, or the like can be applied.

  Further, the projectors 100 to 103 are not limited to liquid crystal projectors (transmission type, reflection type such as LCOS), and may be projectors using a digital micromirror device, for example. Further, the functions of the projectors 100 to 103 may be distributed to a plurality of devices (for example, a PC and a projector).

  The image display device is not limited to the projectors 100 to 103, and may be, for example, a television, a digital camera, a digital video camera, a mobile phone, a portable game device, a liquid crystal display, or the like.

  100 to 103 projector (image display device), 110 external light measurement unit (first sensor), 111 imaging unit (first sensor), 120 operation unit, 121 operation buttons, 122 zoom ring, 123 focus ring, 130 to 132 human sensor, 140, 141 storage unit, 142 color mode data, 144, 145 sensing data, 146 setting data, 150 image input unit, 152 update unit, 160, 161 adjustment unit, 170, 171 control unit, 180-183 Judgment unit, 190 Projection unit

Claims (8)

An operation unit;
A first sensor that is disposed in proximity to the operation unit and generates a first sensing value;
An adjustment unit for adjusting the image;
Indicates a state in which the operation unit is operated based on at least one of a second sensing value by the human sensor, operation information from the operation unit, and detection information indicating that the operation unit has been operated. A determination unit for determining whether or not the operation state;
Including
The adjustment unit adjusts the image based on the first sensing value when not in the operation state, and does not adjust the image based on the first sensing value when in the operation state.
Image display device. The image display device according to claim 1,
Including a storage unit for storing color mode data indicating correspondence between illuminance and color mode;
The first sensor measures the illuminance of external light as the first sensing value and generates a measurement value indicating the illuminance,
The adjustment unit determines the color tone mode to be applied based on the measurement value and the color tone mode data when not in the operation state, and adjusts at least one of the color and brightness of the image according to the color tone mode. And if it is in the operation state, the adjustment currently applied as the adjustment of the image is continued.
Image display device. The image display device according to claim 2,
When the adjustment unit transitions from the operation state to the non-operation state, the adjustment unit continues the adjustment currently being applied as the image adjustment until a predetermined time has elapsed since the transition to the non-operation state.
Image display device. The image display device according to any one of claims 1 to 3,
When not in the operating state, the first sensor generates the first sensing value, and when in the operating state, the first sensor does not generate the first sensing value. Including a controller that controls the sensor,
Image display device. In the image display device according to any one of claims 1 to 4,
Including the human sensor arranged in proximity to the operation unit;
The determination unit determines whether or not the operation state is based on the second sensing value.
Image display device. In the image display device according to any one of claims 1 to 4,
The operation unit is
At least one of a focus adjustment unit for adjusting the focus state of the image, a zoom adjustment unit for adjusting the zoom state of the image, and an operation panel unit on which a plurality of operation buttons are arranged;
A detection information generation unit that detects that at least one of the focus adjustment unit, the zoom adjustment unit, and the plurality of operation buttons has been operated, and generates the detection information;
Including
The determination unit determines whether the operation state is based on the detection information.
Image display device. In the image display device according to any one of claims 1 to 4,
The operation unit is
At least one of a focus adjustment unit for adjusting the focus state of the image, a zoom adjustment unit for adjusting the zoom state of the image, and an operation panel unit on which a plurality of operation buttons are arranged;
An operation information generation unit that generates the operation information indicating the operation content of at least one of the focus adjustment unit, the zoom adjustment unit, and the plurality of operation buttons;
Including
The determination unit determines whether or not the operation state is based on the operation information.
Image display device. A computer having an image display device including an operation unit and a first sensor that is arranged in proximity to the operation unit and generates a first sensing value,
Causing the first sensor to generate a first sensing value;
Indicates a state in which the operation unit is operated based on at least one of a second sensing value by the human sensor, operation information from the operation unit, and detection information indicating that the operation unit has been operated. Determine if it is in an operational state,
When not in the operation state, the image is adjusted based on the first sensing value. When in the operation state, the image is not adjusted based on the first sensing value.
Image adjustment method.

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