JP2003315913A - Liquid crystal projector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid crystal projector which prevents an adjustment result of an optical system from being changed due to misoperation of a user. <P>SOLUTION: The liquid crystal projector is provided with a means for performing setting to inhibit or permit zoom adjustment of the optical system based on the operation of an operation part on the liquid crystal projector main body side, a means for performing setting to inhibit or permit zoom adjustment of the optical system based on remote operation, a means for inhibiting the zoom adjustment operation of the optical system based on operation of the operation part on the liquid crystal projector main body side in the case that setting to inhibit the zoom adjustment of the optical system based on the operation of the operation part on the liquid crystal projector main body side is performed, and a means for inhibiting the zoom adjustment operation of the optical system based on remote operation in the case that setting to inhibit the zoom adjustment of the optical system based on remote operation is performed. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal projector.

[0002]

2. Description of the Related Art In a liquid crystal projector, optical system adjustments such as zoom adjustment, focus adjustment, shift adjustment (moving a lens vertically and horizontally) are performed. These adjustments are performed based on the key operation of the main body operation unit provided in the liquid crystal projector main body or the remote operation by the remote control transmitter.

By the way, a large liquid crystal projector is not moved once it is installed, for example, suspended from the ceiling. Therefore, it is necessary to adjust the optical system such as zoom adjustment, focus adjustment, and shift adjustment. Once done,
There is little need to make these adjustments thereafter.

However, even after such an adjustment of the optical system is once performed, due to a user's operation error,
Sometimes I unknowingly changed the adjustment results of these optical systems. Then, it becomes necessary to readjust the optical system again.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a liquid crystal projector capable of preventing the adjustment result of the optical system from being changed by a user's operation error.

[0006]

According to a first aspect of the present invention, means for making a setting for prohibiting or permitting zoom adjustment of an optical system, and a setting for prohibiting zoom adjustment of an optical system are performed. In this case, a means for prohibiting the zoom adjustment operation of the optical system is provided.

According to a second aspect of the present invention, means for making settings for prohibiting or permitting zoom adjustment of the optical system based on the operation of the operation section on the liquid crystal projector main body, and zooming of the optical system based on the remote operation. A means for performing a setting for prohibiting or permitting adjustment, and a setting for prohibiting the zoom adjustment of the optical system based on the operation of the operation unit on the liquid crystal projector main body, the operation on the liquid crystal projector main body side If the means for prohibiting the optical system zoom adjustment operation based on the remote control operation and the setting to prohibit the optical system zoom adjustment operation based on the remote operation are set, the optical system zoom adjustment operation based on the remote operation is performed. It is characterized by having means for prohibiting it.

According to a third aspect of the invention, there is provided means for making a setting for prohibiting or permitting the focus adjustment of the optical system, and a setting for prohibiting the focus adjustment of the optical system. It is characterized in that it comprises means for prohibiting the focus adjustment operation of the optical system.

According to a fourth aspect of the present invention, there is provided means for making settings for prohibiting or permitting focus adjustment of the optical system based on the operation of the operation section on the liquid crystal projector main body side.
A means for making settings for prohibiting or allowing the focus adjustment of the optical system based on remote operation, and a case where the setting for prohibiting the focus adjustment of the optical system based on the operation of the operation unit on the liquid crystal projector main body is set. Is a means for prohibiting the focus adjustment operation of the optical system based on the operation of the operation unit on the liquid crystal projector main body, and the remote operation when the setting for prohibiting the focus adjustment of the optical system based on the remote operation is performed. It is characterized by comprising means for prohibiting the focus adjustment operation of the optical system based on the above.

According to a fifth aspect of the present invention, a means for performing a setting for prohibiting or permitting the shift adjustment of the optical system and a setting for prohibiting the shift adjustment of the optical system are performed. It is characterized in that it is provided with means for prohibiting the shift adjustment operation of the optical system.

According to a sixth aspect of the present invention, means for making settings for prohibiting or permitting shift adjustment of the optical system based on the operation of the operation unit on the liquid crystal projector main body, and shift of the optical system based on the remote operation. A means for performing a setting for prohibiting or permitting adjustment, and a setting for prohibiting shift adjustment of the optical system based on the operation of the operation unit on the liquid crystal projector main body, the operation on the liquid crystal projector main body side Means for prohibiting the optical system shift adjustment operation based on the operation of the optical system and the setting to prohibit the optical system shift adjustment operation based on the remote operation, the optical system shift adjustment operation based on the remote operation is performed. It is characterized by having means for prohibiting it.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the structure of a liquid crystal projector.

The video signal input to the video input terminal 1 is
The image data is sent to the video processing circuit 2 for scaling processing and the like. The video signal output from the video processing circuit 2 is OSD
It is sent to the mixing circuit 3 and is combined with OSD (on-screen display) data. The video signal output from the OSD mixing circuit 3 is written in the liquid crystal panel 5 by the drive circuit 4.

The image written on the liquid crystal panel 5 is projected on a screen (not shown) via the optical system 9 by the action of the light source lamp 6. A cooling fan 8 is provided near the light source lamp 6.

The light source lamp 6 is driven by a lamp driving circuit 7. The optical system 9 includes an optical system adjusting mechanism for performing zoom adjustment, focus adjustment, and shift adjustment. The optical system driving device 10 drives an optical system adjusting mechanism to perform zoom adjustment, focus adjustment, and shift adjustment, and includes a zoom motor, a focus motor, and a shift motor.

The lamp drive circuit 7, the cooling fan 8 and the optical system drive device 10 are controlled by the microcomputer 20. An operation signal is input to the microcomputer 20 from an operation unit 21 provided in the liquid crystal projector main body, and a remote operation signal is input from a remote control transmitter 22.

The zoom adjustment, focus adjustment, or shift adjustment is performed by the operation unit 21 provided in the liquid crystal projector body.
Alternatively, it is performed based on an operation signal from the remote control transmitter 22.

In this embodiment, settings for prohibiting or permitting zoom adjustment, focus adjustment, or shift adjustment are possible. This setting operation will be described.

First, the operation unit 21 or the remote control transmitter 2
By operating 2, the main menu screen is displayed on the screen, and the setting menu screen as shown in FIG. 2 is displayed on the screen from the main menu screen. The operation unit 21 or the remote control transmitter is provided with cursor keys including up, down, left and right keys, a decision key, and the like.

In the example of FIG. 2, the setting menu screen has, as selection items, a language setting item for setting the language used on the menu screen, a display setting item for making settings such as up / down / left / right inversion, and the above-mentioned items. Key setting items for permitting or prohibiting zoom adjustment, lamp setting items for setting the number of lighting lamps when a plurality of light source lamps 6 are provided, and the like are displayed. Further, a back button is also displayed on the setting menu screen.

After selecting a key setting item by operating the up and down keys on the setting menu screen and pressing the enter key, the key setting screen shown in FIG. 3 is displayed on the screen.

In the example of FIG. 3, in addition to the return button, the following six types of setting items are displayed on the key setting screen.

"Zoom main body": Setting item for setting whether to permit or prohibit zoom adjustment based on the operation of the operation unit 21 provided in the liquid crystal projector main body "Zoom remote control": For operation of the remote control transmitter 22 Item to set whether to allow or prohibit zoom adjustment based on

"Focus main body": Setting item for setting whether to permit or prohibit focus adjustment based on the operation of the operation unit 21 provided in the liquid crystal projector main body "Focus remote control": For operation of the remote control transmitter 22 Setting item to set whether to allow or prohibit focus adjustment based on

"Lens shift main body": Setting item for setting whether to permit or prohibit shift adjustment based on the operation of the operation unit 21 provided in the liquid crystal projector main body "Lens shift remote control": Remote control transmitter 22 Setting item to set whether to allow or prohibit shift adjustment based on operation

After selecting the set item with the up and down keys, the user operates the left and right keys to select permission or prohibition, thereby setting permission / prohibition for the setting item.

In the display example of FIG. 3, only the zoom adjustment based on the operation of the remote control transmitter 22 is prohibited.

The microcomputer 20 stores the setting contents of the key setting in a non-volatile memory (not shown). Then, when an operation signal for zoom adjustment, focus adjustment, or shift adjustment is input from the operation unit 21 or the remote control transmitter 22 provided in the liquid crystal projector main body, the keys stored in the nonvolatile memory are stored. Based on the setting contents of the setting, it is determined whether the operation is prohibited or permitted, and if it is prohibited, the operation signal is invalidated. If the operation is permitted, the operation signal is accepted as valid and control is performed according to the operation signal.

After zoom adjustment, focus adjustment, or shift adjustment is performed once, for example, zoom adjustment,
If the settings for prohibiting all focus adjustment or shift adjustment operations are performed, even if the user mistakenly performs an operation corresponding to zoom adjustment, focus adjustment, or shift adjustment, the adjustment that has already been set The contents will not change.

In the above-described embodiment, the settings for permitting or prohibiting zoom adjustment, focus adjustment, or shift adjustment are made based on the operation of the operation unit 21 provided in the liquid crystal projector main body and the remote control transmitter 22. The adjustment based on the operation of the operation unit 21 provided in the liquid crystal projector main body and the adjustment based on the operation of the remote control transmitter 22 are collectively set. You may do it.

For example, with respect to zoom adjustment, only one setting item for setting whether to permit or prohibit zoom adjustment is provided, and when the setting for prohibiting zoom adjustment is made, it is provided in the liquid crystal projector main body. Operation unit 21
Alternatively, zoom adjustment based on any operation of the remote control transmitter 22 may be prohibited.

[0033]

According to the present invention, it is possible to prevent the adjustment result of the optical system from being changed by a user's operation error.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a liquid crystal projector.

FIG. 2 is a schematic diagram showing an example of a setting menu screen.

FIG. 3 is a schematic diagram showing an example of a key setting screen.

[Explanation of symbols]

3 OSD mixing circuit 4 drive circuit 5 LCD panel 9 Optical system 10 Optical system drive 20 microcomputer 21 Operation unit provided on the liquid crystal projector body 22 Remote control transmitter

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04N 5/74 H04N 5/74 AF Term (reference) 2H088 EA12 HA06 HA24 MA20 2H093 NC48 NC50 NC90 ND60 NE06 NG02 2K103 AA05 AA16 AB10 CA31 CA78 5C056 AA05 BA10 CA02 CA05 CA13 DA02 DA11 EA05 5C058 AA06 BA35 EA02 EA12 EA26

Claims (6)

[Claims] 1. A means for performing a setting for prohibiting or permitting the zoom adjustment of the optical system, and a zoom adjustment operation of the optical system when the setting for prohibiting the zoom adjustment of the optical system is performed. A liquid crystal projector comprising means for prohibiting. 2. A means for setting for prohibiting or permitting zoom adjustment of an optical system based on an operation of an operation unit on the liquid crystal projector main body, and a prohibition or permitting zoom adjustment of an optical system based on a remote operation. If the setting to prohibit the zoom adjustment of the optical system based on the operation of the operation unit on the liquid crystal projector main body is made,
When the means for prohibiting the zoom adjustment operation of the optical system based on the operation of the operation unit on the liquid crystal projector main body and the setting for prohibiting the zoom adjustment of the optical system based on the remote operation are set, the optical operation based on the remote operation is performed. A liquid crystal projector comprising means for prohibiting a zoom adjustment operation of the system. 3. A means for performing a setting for prohibiting or permitting the focus adjustment of the optical system, and a setting for prohibiting the focus adjustment of the optical system,
A liquid crystal projector comprising means for inhibiting a focus adjustment operation of an optical system. 4. A means for making settings for prohibiting or permitting focus adjustment of an optical system based on an operation of an operation unit on the liquid crystal projector main body, and for prohibiting or permitting focus adjustment of an optical system based on a remote operation. If the setting for prohibiting the focus adjustment of the optical system based on the operation of the operation section on the liquid crystal projector main body is made, the optical system based on the operation of the operation section on the liquid crystal projector main body is set. Means for prohibiting the focus adjustment operation of the optical system, and means for prohibiting the focus adjustment operation of the optical system based on the remote operation when the setting for prohibiting the focus adjustment of the optical system based on the remote operation is performed. LCD projector characterized by being 5. A means for performing a setting for prohibiting or permitting shift adjustment of an optical system, and a shift adjustment operation of an optical system when a setting for prohibiting shift adjustment of an optical system is performed. A liquid crystal projector comprising means for prohibiting. 6. A means for performing setting for prohibiting or permitting shift adjustment of an optical system based on an operation of an operation unit on the liquid crystal projector main body, and for inhibiting or allowing shift adjustment of an optical system based on a remote operation. If there is a setting to prohibit the shift adjustment of the optical system based on the operation of the operation unit on the liquid crystal projector main body,
When the means for prohibiting the shift adjustment operation of the optical system based on the operation of the operation unit on the liquid crystal projector main body and the setting for prohibiting the shift adjustment of the optical system based on the remote operation are performed, the optical operation based on the remote operation is performed. A liquid crystal projector comprising: means for inhibiting a system shift adjustment operation.