JP2001067051A - Image display device and its control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a user from changing a preset operation condition of an image display device, by prohibiting change of the setting of a locked set item with an operation-condition managing portion even when the user intends to set an operation condition using an operation condition input portion. SOLUTION: An installer sets an operation condition of a projection-type display device responsive to a control screen displayed on an adjusting device. Among set operation conditions, items to be prohibited (locked) to be changed in setting by the user or items to be permitted (unlocked) are selected. Lock/ unlock information of each selected item is contained in a control signal and transmitted to the projection-type display device, and stored in an operation condition setting memory 224. Even if the user intends to select the locked set items, an OSD processing portion 212 prohibits setting of the locked set items based on the lock/unlock information stored in the operation condition setting memory 224.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an image display device for displaying an image and a control method thereof.

[0002]

2. Description of the Related Art A projection display device, which is a type of image display device for displaying images, is often used for presentations because an image represented by an input image signal can be enlarged and displayed on a screen. This projection display device
In some cases, a professional installer (hereinafter, referred to as an “installer”) installs the terminal in a conference room, a hall, or the like where a presentation is given. In this case, the installer preliminarily sets various operating conditions including display (video) characteristics such as resolution, brightness, and contrast so as to operate properly in an environment where the projection display device is installed.

When actually using the projection display device thus installed, the user may want to directly adjust the operating conditions of the projection display device according to the displayed image. In order to meet this demand, the projection display device often has an adjustment function that allows a user to adjust operating conditions.

[0004]

However, the operating conditions set in advance by the installer are conditions set so as to operate properly in an environment in which the projection display device is installed, and are therefore included in the conditions. Some setting items may not be preferably changed by the user after installation by the installer.
Further, such a problem is not limited to the projection display device, but is also a common problem in a direct-view image display device using a flat panel such as a plasma display panel.

The present invention has been made to solve the above-mentioned problems in the prior art, and has a technique for preventing a user from changing the setting of the operating condition of the image display apparatus set in advance by the installer. The purpose is to provide.

[0006]

In order to solve at least a part of the above-mentioned problems, an image display apparatus according to the present invention is provided so that a user can input setting of operating conditions of the image display apparatus. An operation condition input unit, an operation condition management unit that manages the operation condition, and an image signal processing unit that converts an input image signal into a display image signal in accordance with a set operation condition; The management unit allows a specific user to lock the setting item of the operation condition, and locks when a user other than the specific user attempts to set the operation condition using the operation condition input unit. The change of the setting of the set item is prohibited.

According to the image display device of the present invention, it is possible to prevent the user from changing the setting of the operating condition of the image display device set in advance by the installer.

Here, the operating condition management unit allows the setting and release of the lock of the setting item of the operating condition when the specific user uses a specific input unit other than the operating condition input unit. Is preferred.

With this configuration, a specific user and a user other than the specific user can be easily distinguished.

In this case, it is preferable that the operating condition input unit is a remote controller.

In the above-mentioned image display device, the operating condition management unit displays a setting screen indicating a setting state of the operating condition, and a setting item for which a lock is set and a lock item in the setting screen. It is preferable to display the setting items that have been canceled so that they can be identified.

In this way, it is possible to easily indicate to the user the setting items for which the lock has been set and the setting items for which the lock has been released.

[0013] A method of controlling an image display device according to the present invention is a method of controlling an image display device including an operation condition input unit for a user to input setting of operation conditions of the image display device. While permitting the setting items of the operating condition of the image display device to be locked, when a user other than the specific user attempts to set the operating condition using the operating condition input unit, the locked setting item is locked. It is characterized in that setting change is prohibited.

By applying the above control method to the image display device, the same operation and effect as those of the image display device of the present invention can be obtained.

[0015]

DETAILED DESCRIPTION OF THE INVENTION Configuration of Projection Display Device: FIG.
FIG. 1 is an explanatory diagram showing a projection display system as an embodiment of the present invention. This projection display system includes a projection display device PJ and an adjusting device PC. The projection display device PJ and the adjustment device PC constitute a projection display device in a broad sense. As the adjusting device PC, for example, a personal computer is used.

The installer installs the projection display device PJ in a conference room or the like in the following procedure. First, the projection display device PJ is installed at a predetermined installation location, and the adjustment device PC is connected to the projection display device PJ. And a projection display device PJ
The image signal AV1 output from the adjustment device PC
Is projected and displayed on the screen SC. Note that the image signal AV1 may be supplied from an image supply device such as a personal computer or a video recorder. When the installer sets the operation conditions of the projection display device PJ using the adjustment device PC, the control signal C is transmitted via a communication line connecting the adjustment device PC and the projection display device PJ.
TR is output to the projection display device PJ, and the operating conditions of the projection display device PJ are set in the projection display device PJ.
The projection display device PJ displays an image according to the set operation conditions.

The user can set operating conditions of the projection display device PJ using a remote controller (remote controller) RC.

FIG. 2 is a block diagram showing an example of the overall configuration of the projection display device PJ. The projection display device PJ
An image signal processing unit 210, an OSD (on-screen display) processing unit 212, an OSD memory 213, a liquid crystal light valve driving unit 214, and a liquid crystal light valve 21.
6, a CPU 220, a frame memory 222, an operation condition setting memory 224, a control signal processing unit 228, the illumination optical system 100, and the projection optical system 102. An image signal processing unit 210;
The SD processing unit 212, the CPU 220, the operation condition setting memory 224, and the control signal processing unit 228
b are connected to each other, and the operation of each unit is
220. Liquid crystal light valve 21
6 is almost uniformly illuminated by the illumination optical system 100, and an image formed by the liquid crystal light valve 216 is projected on the screen SC by the projection optical system 102. In FIG. 2, the illustration of the optical systems 100 and 102 is simplified.

The image signal processing section 210 receives an analog image signal AV input from an external image supply device (not shown).
1 has a function of performing AD conversion, writing the AD converted image data into the frame memory 222, and reading the image data from the frame memory 222.
The processing of the image signal processing unit 210 is executed in accordance with an operation condition stored in an operation condition setting memory 224 described later.

As the analog image signal AV1, image signals such as an RGB signal representing a computer screen outputted from a personal computer and a composite image signal representing a moving picture outputted from a video recorder or a television receiver are supplied. You.

The control signal processing section 228 receives a command from the remote controller RC and a control signal CTR from the adjusting device PC (FIG. 1).
, And controls the function of each part of the projection display device PJ. For example, the control signal processing unit 228 controls the image signal processing unit 210 and the OSD processing unit 212,
Operation conditions such as display conditions can be set. Specifically, upon receiving a command from the remote controller RC or the adjusting device PC, the OSD processing unit 212 displays a predetermined setting screen,
The image signal processing unit 210 can execute processing based on the display conditions set according to the setting screen.

The OSD processing section 212 includes a control signal processing section 2
OSD image data representing a setting screen is generated based on a command from the CPU 28.

The OSD memory 213 stores graphic data, font data, and the like constituting a setting screen in a predetermined format. When displaying the setting screen, the OSD processing unit 212 reads out the corresponding image data from the OSD memory 213 and generates OSD image data. Further, the generated OSD image data is combined with the image data DV1 output from the image signal processing unit 210. The image data DV in the OSD processing unit 212
1 and the OSD image data are synthesized by the OSD processing unit 212.
This can be performed by a selector (not shown) provided therein. Alternatively, two multipliers each multiplying the image data DV1 and the OSD image data by a predetermined value by a constant,
This may be performed by providing an adder for adding two multiplication results. In this case, the image data DV
The setting screen represented by the OSD image data can be displayed in a semi-transparent state on the image represented by 1.

The image data DV2 output from the OSD processing section 212 is supplied to a liquid crystal light valve driving section 214. The liquid crystal light valve driving section 214 drives the liquid crystal light valve 216 according to the image data DV2. The liquid crystal light valve 216 modulates the light emitted from the illumination optical system 100. The light modulated by the liquid crystal light valve 216 is projected on the screen SC by the projection optical system 102, and an image is displayed on the screen SC. As can be understood from the above description, the image signal processing unit 210, the OSD processing unit 212, and the liquid crystal light valve driving unit 214 of the present embodiment function as an image display signal generation unit of the present invention, and the liquid crystal light valve 216 Function as an electro-optical device.

The adjusting device PC and the OSD processing unit 21
2. Each unit such as the control signal processing unit 228 can be realized not only by hardware but also by a computer executing a computer program. A computer program for realizing the functions of these units is provided in a form recorded on a computer-readable recording medium such as a floppy disk or a CD-ROM.

The "recording medium" in the present invention includes a flexible disk, a CD-ROM, a magneto-optical disk, an IC card, a ROM cartridge, a punched card, a printed matter on which a code such as a bar code is printed, and a computer internal storage. Device (RAM, ROM, etc.)
And various computer-readable media such as an external storage device.

B. Setting of operating condition using remote control RC: When the user sets the operating condition of the projection display device PJ, first, the display of the setting screen is selected by the remote control RC. Thereby, OSD is displayed on the screen SC.
The setting screen is displayed by the processing unit 212. FIG.
FIG. 9 is an explanatory diagram illustrating an example of a setting screen displayed on a screen SC. FIG. 3 shows an example in which a setting screen for operating conditions relating to video is displayed, and a setting item “display position” is selectively displayed. The user uses the remote control RC to
The user can select an item to be set on the displayed setting screen and set the item. For example, when setting of the setting item “contrast” is desired, the setting item “contrast” is selected by the “selection button” of the remote controller RC, and the condition is set by the “adjustment button”. The setting of other items can be similarly executed.

The set operating conditions are determined by the control signal processing unit 2
28 is stored in the operating condition setting memory 224.
The projection display device PJ displays an image in accordance with the operating conditions stored in the operating condition setting memory 224.

C. Setting of Operating Conditions Using Adjustment Device PC: The adjustment device PC of FIG. 1 is realized by executing a program for setting the operation conditions of the projection display device PJ on a general personal computer. FIG. 4 is a flowchart illustrating an example of a procedure for setting operating conditions of the projection display device PJ executed using the adjustment device PC. When the installer sets the operating conditions of the projection display device PJ using the adjustment device PC, first,
In step S110, the projection type display device PJ is activated. Next, the adjustment device PC is started in step S120, and the control program is executed in step S130. At this time, the adjustment device PC requests the projection display device PJ to output the product ID information. The control signal processing unit 228 of the projection display device PJ outputs the product ID information to the adjustment device PC. Then, step S1
At 40, a password input screen is displayed on the screen of the adjusting device PC. At this time, in step S150, the installer inputs the password,
The control screen of the projection display device PJ corresponding to the obtained product ID is displayed on the screen of the adjustment device PC.

FIG. 5 is an explanatory diagram showing an example of a control screen displayed on the adjusting device PC. In step S160, the installer sets operation conditions of the projection display device PJ according to the control screen displayed on the adjustment device PC.
The set operating conditions are transmitted to the projection display device PJ via the communication line CS, and are stored in the operating condition setting memory 224 by the control signal processing unit 228.

The projection display device PJ displays an image in accordance with the operating conditions stored in the operating condition setting memory 224. Therefore, the installer can adjust the operating conditions of the projection display device PJ using the adjustment device PC while checking the image projected and displayed on the screen SC.

Next, the installer proceeds to step S170
In, among the operation conditions set in step S160, an item for prohibiting (locking) or an item for permitting (unlocking) the setting change by the user is selected.

The processes of steps S160 to S180 are repeatedly executed until the setting of the operating conditions of the projection display device PJ is completed.

D. Lock / Unlock Control: FIG. 6 is a flowchart showing a procedure for selecting an item to be locked or an item to be unlocked in step S170. In step S172, the installer selects an item to be locked or an item to be unlocked according to the control screen of FIG. Specifically, selection is made by clicking a lock mark KM displayed in each setting item column of the control screen. A closed key mark KM (L) indicates a locked state, and an open key mark KM (U) indicates an unlocked state. When the closed key mark KM (L) is clicked, it changes to the open key mark KM (U), the unlocked state is selected, and when the open key mark KM (U) is clicked,
It changes to the key mark KM (L) in the closed state, and the locked state is selected. Note that a large key mark KMA at the upper left of the control screen can select whether to lock or unlock all items on the displayed setting screen. For example, by clicking the lock mark KMA in the upper left of FIG. 5, the operating conditions (tracking, synchronization,
Brightness, contrast, sharpness, etc.) can be locked or unlocked as a whole.

Lock / unlock information (prohibition information) indicating the lock / unlock status of each item selected in step S172 is included in the control signal CTR and transmitted to the projection display device PJ via the communication line CS. The data is transmitted and stored in the operation condition setting memory 224 by the control signal processing unit 228. Then, the processing of steps S172 to S176 is repeated until the selection of lock or unlock ends.

FIG. 7 shows an example of the operating conditions stored in the operating condition setting memory 224. As shown in FIG. 7, the operating condition setting memory 224 stores information indicating the locked / unlocked state for each item of the set operating condition.

At this time, the installer can actually display the setting screen and check the locked / unlocked state. The setting screen is displayed on the remote control RC
Can be performed by selecting the display of the setting screen, or by an instruction from the adjusting device PC.

The OSD processing section 212 can identify locked setting items and unlocked setting items based on the locked / unlocked state of each setting item stored in the operation condition setting memory 224. To be displayed. FIG.
FIG. 4 is an explanatory diagram showing an example of a setting screen for a locked state. As can be seen by comparing with the setting screen of FIG. 3, the setting screen of FIG. 8 is configured so that the characters “brightness” and “sharpness” are difficult to see (or not).
The setting items in the display state are displayed in a locked state.

At this time, even if the user attempts to select a locked setting item, the OSD processing section 212 determines whether the locked setting item is locked based on the lock / unlock information stored in the operating condition setting memory 224. Prohibit setting of items.

The above display is an example, and the locked items may be left blank. That is,
Any display may be used as long as the locked setting item and the unlocked setting item can be displayed in a distinguishable manner.

As described above, the projection type display device of the above embodiment unlocks the locked setting items on the setting screen according to the prohibition information set by the installer using the adjusting device PC. The displayed setting item can be displayed so as to be identifiable, and change of the setting of the locked setting item can be prohibited. Thus, it is possible to prohibit the setting of the operating condition that the user does not want to change the setting.

As can be seen from the above description, the image signal processing unit 210 of this embodiment and the frame memory 22
2, an OSD processing unit 212, an OSD memory 213,
Control signal processing unit 228 and operating condition setting memory 224
And the liquid crystal light valve driving section 214 correspond to the image signal generating section of the present invention. Further, the OSD processing unit 2 of the present embodiment
12, the OSD memory 213, and the control signal processing unit 228
And the operating condition setting memory 224 correspond to an operating condition management unit of the present invention. Further, the remote controller RC corresponds to the operation condition input unit of the present invention. Also, the adjusting device PC of the present embodiment
Corresponds to a specific input unit of the present invention.

It should be noted that the present invention is not limited to the above examples and embodiments, but can be implemented in various modes without departing from the gist thereof.
For example, the following modifications are possible.

(1) In the above embodiment, lock / unlock information (prohibition information) is supplied from the adjusting device PC as shown in FIG. 1, but the present invention is not limited to this.
For example, the remote control RC may be provided with a lock / unlock selection button, and lock / unlock information may be supplied from the remote control RC. In this case, the adjusting device can be omitted. It is preferable that the lock / unlock selection button be invisible to only a specific user who needs to perform lock / unlock such as an installer.

(2) In the above embodiment, the liquid crystal light valve 216 is used as the electro-optical device of the projection display device.
Although FIG. 2 is used, the present invention is not limited to this. That is, as the electro-optical device, various devices that emit light for forming an image according to an image signal can be used. For example, an emission direction control type optical modulator such as a DMD (digital micromirror device) may be used, or a high-brightness CRT or a plasma display panel may be used.

(3) In the above embodiment, the projection type display device is described as an example. However, the present invention is not limited to this.
The present invention can be applied to a direct-view image display device using a flat panel such as a plasma display panel.

(4) In the above embodiment, a part of the configuration realized by hardware may be replaced by software, and conversely, a part of the configuration realized by software is replaced by hardware. You may do so.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a projection display system as an embodiment of the present invention.

FIG. 2 is a block diagram illustrating an example of an overall configuration of a projection display device PJ.

FIG. 3 is an explanatory diagram showing an example of a setting screen displayed on a screen SC.

FIG. 4 is a flowchart illustrating an example of a procedure for setting operating conditions of the projection display device PJ executed using the adjustment device PC.

FIG. 5 is an explanatory diagram illustrating an example of a control screen displayed on the adjustment device PC.

FIG. 6 is a flowchart showing a procedure for selecting an item to be locked or an item to be unlocked in step S170.

FIG. 7 shows an example of operation conditions stored in an operation condition setting memory 224.

FIG. 8 is an explanatory diagram showing an example of a setting screen for a locked state.

[Explanation of symbols]

 Reference Signs List 100 illumination optical system 102 projection optical system 200b bus 200 image signal generating unit 210 image signal processing unit 212 OSD processing unit 213 OSD memory 214 liquid crystal light valve driving unit 216 liquid crystal light valve 220 CPU 222 ... Frame memory 224 ... Operating condition setting memory 228 ... Control signal processing unit PC ... Adjustment device PJ ... Projection display device RC ... Remote control SC ... Screen

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[Procedure amendment]

[Submission date] July 19, 2000 (2007.1)
9)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 5

[Correction method] Change

[Correction contents]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006]

In order to solve at least a part of the above-mentioned problems, an image display apparatus according to the present invention is provided so that a user can input setting of operating conditions of the image display apparatus. An operation condition input unit, an operation condition management unit that manages the operation condition, and an image signal processing unit that converts an input image signal into a display image signal in accordance with a set operation condition; management unit is configured to allow a particular user to lock the setting items of the operating condition, setting the operating conditions any of the specific user with the particular user other than the user uses the operating condition input unit even when you try to, characterized in that it is prohibited to change the settings for the locked setting item.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction contents]

[0007] According to the image display device of the present invention, the setting of the operating condition of the image display device set in advance by the installer is performed by the specific user and the specific user.
It is also possible to prevent any other outside from changing using the operating condition input unit .

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0013

[Correction method] Change

[Correction contents]

[0013] A method of controlling an image display device according to the present invention is a method of controlling an image display device including an operation condition input unit for a user to input setting of operation conditions of the image display device. While allowing to lock the setting items of the operating condition of the image display device, the specific
That the one user and the particular user other than the user tries to set the operating condition by using the operation condition input portion
In this case , the change of the setting of the locked setting item is prohibited.

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5C058 AA06 AB03 BA35 BB25 5C080 AA10 BB05 CC06 DD13 DD18 DD30 JJ01 JJ02 JJ07 KK43 5C082 AA01 CA81 CB01 CB06 DA87 MM09 5E501 AC15 BA03 CA04 CC02 DA12 EB05 FA08 FA23 FA

Claims (5)

[Claims] 1. An image display device for displaying an image, comprising: an operation condition input unit for a user to input setting of operation conditions of the image display device; an operation condition management unit for managing the operation conditions; An image signal processing unit for converting an input image signal into a display image signal according to a set operation condition, wherein the operation condition management unit locks a setting item of the operation condition by a specific user. And an image display device that prohibits a user other than the specific user from changing the settings of the locked setting items when trying to set operating conditions using the operating condition input unit. 2. The image display device according to claim 1, wherein the operation condition management unit is configured to determine the operation condition when the specific user uses a specific input unit other than the operation condition input unit. An image display device that allows setting and release of a lock of a setting item. 3. The image display device according to claim 2, wherein the operation condition input unit is a remote controller. 4. The image display device according to claim 1, wherein the operating condition management unit displays a setting screen indicating a setting state of the operating condition and the setting screen. among,
An image display device that displays a setting item in which a lock is set and a setting item in which the lock is released so as to be distinguishable. 5. A method for controlling an image display device, comprising: an operation condition input unit for allowing a user to input setting of operation conditions of the image display device, wherein a specific user sets an operation condition of the image display device. Image display that allows to lock the setting items and prohibits the user from changing the settings of the locked setting items when the user other than the specific user attempts to set the operating conditions using the operating condition input unit. How to control the device.