JPH09244138A - Projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify setting operation and to obtain the picture of desired projection size by easy input setting by adjusting the magnification of a projection lens based on magnification control instruction information outputted from an arithmetic means and displayed on a display means, adjusting the distance of the projection lens based on projection distance moving instruction information, and adjusting set height based on height moving instruction information. SOLUTION: The arithmetic means 12 arithmetically processes distance information and magnification information outputted from a projection distance detection means 3 and a projection magnification detection means 6, data read out from a storage means 13 and data inputted from respective input means 21, 22 and 23. The arithmetically processed result is displayed on a display device 24 as respective instruction signals 14, 15 and 16. The magnification of a zoom lens 4 is adjusted by the magnification control instruction signal 14, the distance of a focusing lens 1 to a screen is adjusted by the projection distance moving instruction signal 15, and the set height of a projector main body is adjusted by the height moving instruction signal 16 based on the instruction signals displayed on the display device 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projector for optimally setting a projection distance, range and projection angle of a projector main body installed on a projector stand on a screen.

[0002]

2. Description of the Related Art Conventionally, when installing a projector,
Difficult operation was required to set the screen in an appropriate state. For example, if the projector is not set to a predetermined height, trapezoidal screen distortion may occur in the image projected on the screen. In order to correct this trapezoidal screen distortion, a tilt mechanism has been added to the lens, and distortion has been corrected by image processing.

In addition, when the zoom ratio exceeds the limit when adjusting with a zoom lens to adjust the screen size on the screen, the projector main body is moved back and forth, and the height is increased each time the operation is performed. They had to perform complicated operations, such as the need to make adjustments again.

[0004]

However, it is extremely expensive to add a tilting mechanism to the projection lens in order to correct the screen distortion, and the correction circuit is complicated in the correction that is performed by image processing. There was a problem. Also,
When the zoom limit is exceeded, there is a problem in that complicated operations are required for installation.

Therefore, the present invention has been made to solve the above-mentioned conventional problems, and its purpose is to display the optimum installation condition by inputting the installation condition to the projector and simplify the installation work. It is to provide a projector that can do.

[0006]

In order to achieve such an object, the present invention provides an output means for detecting and outputting distance and magnification information when a projection lens projects an image on a screen, and an output means for the screen. Storage means for storing each information of projection magnification, projection position and projection height position for projecting an image, and input means for inputting installation information of the screen lower end position, desired projection size and height from a reference fixed position An arithmetic processing of the distance and magnification information output from the output means, the information stored in the storage means, and the installation information input by the input means, and an appropriate magnification control instruction, projection distance movement instruction, and height movement. And a display unit for displaying each of the magnification control instruction, the projection distance movement instruction, and the height movement instruction information output from the operation unit. Suitable for installation by adjusting the magnification of the projection lens by the magnification control instruction information displayed on the steps, adjusting the distance of the projection lens by the projection distance movement instruction information, and adjusting the installation height by the height movement instruction information. You can obtain the installation position, installation height, projection magnification, and projection distance information of the projector.

According to another aspect of the invention, a projection lens for projecting an image on a screen is controlled by a driving unit to detect distance and magnification information when the image is projected on the screen, and a projector main body model. A projector main body having a model discriminating means in which discriminating information determined for each is set, a connector for transmitting and receiving a signal to and from the model discriminating means and the control means, and means in the stand connected to the connector of the projector main body. A connector for transmitting and receiving signals, a storage means for reading and storing discrimination information for each model of the projector main body set in the model discrimination means, and a setting information of a screen lower end position, a desired projection size and a height from a reference fixed position. Input means for inputting, distance and magnification information output from the control means, discrimination information stored in the storage means, input An arithmetic means for arithmetically processing the installation information input by the means, and outputting each information of an appropriate magnification control instruction, projection distance movement instruction, stand height movement instruction, and stand front-back movement instruction, and an output means from this arithmetic means. The projector has a height adjustment drive means for controlling the height of the stand based on the stand height movement instruction information, and a front-back adjustment drive means for controlling the front-back direction of the stand based on the stand front-back movement instruction information output from the calculation means. A projector stand on which the main body is placed, and a display unit for displaying each information of the magnification control instruction, the projection distance movement instruction, the height movement instruction, and the stand front-back movement instruction output from the arithmetic unit are provided via both connectors. Signals are exchanged between the projector body and the projector stand, and the magnification control instruction information displayed on the display means By adjusting the magnification of the shadow lens and adjusting the distance of the projection lens according to the projection distance movement information, it is possible to obtain the appropriate installation position, installation height, projection magnification and projection distance information of the projector main body at the time of installation. Installation is possible.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. (Embodiment 1) FIG. 1 is a block diagram of a projector for explaining the configuration of an embodiment of the projector according to the present invention. In FIG. 1, the projection lens built into the projector main body is such that the focus lens 1 and the projection distance detecting means 3 are mechanically connected, and the focus lens 1 is moved so that the image projected on the screen becomes a clear image. Then, the distance information is output by the projection distance detecting means 3 including, for example, an encoder and a potentiometer in response to the movement. Similarly to the focus lens 1, the zoom lens 4 is mechanically connected to the projection magnification detecting means 6, and when the zoom lens 4 is moved when setting the projection size, the projection magnification detecting means 6 magnifies the movement. Information is output. The distance information and the magnification information are input to the calculation means 12.

In addition to this, the screen lower end position inputting means 21, the projection size inputting means 22 and the height inputting means 23 are connected to the computing means 12, and each inputting means 2 is connected.
The configuration is such that the signals output from 1, 22, 23 can be input. Normally, the installation position of the projection type projector main body in the height direction is such that the center position of the projection lens is not at the center position of the screen height and the projection is made from below, so the height of the projector main body depends on the projection distance. Need to be adjusted. For this reason, it is necessary to input the screen lower end position information by the screen lower end position input means 21.

Further, a storage means 13 is connected to the arithmetic means 12, and the storage means 13 stores respective data of optimum projection magnification, projection position, and projection height position when the projector is installed. There is. This calculation means 12
Then, these optimum data read from the storage unit 13, the distance information and the magnification information input from the projection distance detection unit 3 and the projection magnification detection unit 6, the screen lower end position input unit 21, the projection size input unit 22 and the height information. The arithmetic operation processing is performed on the screen lower end position information, the projection size information, and the height information input from the input means 23, and the appropriate installation data of the projector is output from these arithmetic results. Magnification control instruction signal 1 output from the calculating means 12
4, the projection distance movement instruction signal 15 and the height movement instruction signal 16 are, for example, a display device 24 including a liquid crystal display element or the like.
Is input to

In this way, the distance information and the magnification information output from the projection distance detecting means 3 and the projection magnification detecting means 6, respectively, and the data read from the storage means 13,
The results of arithmetic processing of the data input from the respective input means 21, 22, 23 are displayed on the display device 24 as the respective instruction signals 14, 15, 16, so that the display device 24
Magnification control instruction signal 1 based on each instruction signal displayed on
4 adjusts the magnification of the zoom lens 4, the projection distance movement instruction signal 15 adjusts the distance of the focus lens 1 to the screen, and the height movement instruction signal 16
Thus, the projector body can be properly installed by adjusting the installation height.

(Second Embodiment) FIG. 2 is a block diagram of a projector for explaining the configuration of a projector according to another embodiment of the present invention. The same parts as those in FIG. I am doing it. In FIG. 2, the projector has a projector main body placed on a projector stand and a projector main body side connector 8
And the projector stand side connector 11 are electrically connected to each other, and signals are exchanged between the projector body side and the projector stand side.

Further, the projection lens built in the projector main body is such that the focus lens 1, the focus lens driving means 2 and the projection distance detecting means 3 are mechanically connected, and the image projected on the screen is displayed. When the focus lens 1 is moved by the focus lens driving means 2 so as to obtain a clear image, the distance information is output by the projection distance detecting means 3 including, for example, an encoder and a potentiometer in response to the movement.
The movement of the focus lens 1 by the focus lens driving means 2 is performed manually or electrically.

As with the focus lens 1, the zoom lens 4 is also mechanically connected to the zoom lens driving means 5 and the projection magnification detecting means 6, and the zoom lens driving means 5 zooms when setting the projection size. When the lens 4 is moved, the projection magnification detection means 6 outputs magnification information in response to the movement. A model discriminating means 7 is connected to the projector main body side connector 8, and the model discriminating means 7 stores in advance a model number and setting data for each model of various projector main bodies by a rotary switch or a DIP switch. It is set.

The setting data set in the model discriminating means 7 means the projector installation condition on the screen corresponding to the model number of the projector body (vertical direction and horizontal direction of the projected image projected on the screen). Dimension data). The focus lens driving means 2, the projection distance detecting means 3, the zoom lens driving means 5 and the projection magnification detecting means 6 described above are control means for detecting distance information and magnification information when an image is projected on the screen. I am configuring.

On the other hand, a calculation means 12 is provided on the side of the projector stand, and the calculation means 12 reads out the model number and setting data for each model of the projector main body set in the model discrimination means 7. A storage unit 13 for storing the height, a height detection unit 20 for detecting the height of the projector stand from a reference fixed position such as a floor by an encoder or a potentiometer, a screen lower end position setting input unit 21, and a desired projection size. The projection size input means 22 for inputting is respectively connected.

In such a configuration, the calculation means 12
Is input from the model number and setting data read from the storage unit 13, and the height detection unit 20 indicating the height of the projector stand at the time of installation, the screen lower end position setting input unit 21, and the desired projection size input unit 22. Each of the calculated current data is input and arithmetic processing is performed, and the arithmetic result is used as a magnification control instruction signal 14, a projection distance movement instruction signal 15, a stand height movement instruction signal 16 and a stand front-back movement instruction signal 17. Respectively output.

The magnification control instruction signal 14 and the projection distance movement instruction signal 15 output from the computing means 12 are passed through the stand side connector 11 and the body side connector 8 to the zoom lens driving means 5 and the focus lens on the projector body side, respectively. The zoom lens 4 and the focus lens 1 are driven by the driving means 2 respectively.

The stand height movement instruction signal 16 output from the arithmetic means 12 is connected to the height adjustment drive means 18 to control the height of the projector stand. Further, the stand front-back movement instruction signal 17 is inputted to the front-back adjustment drive means 19 to control the front-back position of the projector stand.

Next, the operation of the projector will be described with reference to an installation example. First, the projector is installed at an approximate position facing the screen. For inputting the installation conditions, the screen bottom end position setting signal from the floor is input to the position setting input means 21, the projection size setting signal is input to the projection size input means 22, and the model number and setting data are input from the model determining means 7 to the main body. This is performed by automatically inputting to the storage means 13 by connecting the side connector 8 and the stand side connector 11. The model number and the setting data are predetermined according to the projector main body to be used.

Next, on the projector body side, focusing is performed by the focus lens 1. As a result, the projection distance information detected by the projection distance detecting means 3 is output,
This distance information is input to the computing means 12 via the body side connector 8 and the stand side connector 11. Computing means 12
Then, the distance information and the model number and the setting data read from the storage means 13 are subjected to arithmetic processing, and information on the optimum projection magnification, projection position and projection height position is output. In this case, this output information is the optimum condition in calculation, but is not the optimum installation condition when the position of the projector stand is included.

Next, the optimum projection magnification, projection position and projection height position information calculated by the calculation means 12 and the projection size input means 22 input at the currently installed position.
And a projection size setting signal from the zoom lens 4 is calculated, and if the calculation result shows that an appropriate magnification can be realized, the magnification control instruction signal 14 is output to the zoom lens driving means 5 and the zoom lens 4 up to the set projection size. To drive.

However, when the input projection size setting signal has a value that cannot be realized (insufficient magnification) with respect to the calculation result of the calculating means 12, it is necessary to move the projector stand back and forth. The instruction signal 17 is output, and the front-rear adjustment drive means 19 controls the projector stand to an appropriate position.

Next, after the projector stand is moved back and forth, the same control as described above is performed again. At that time, since the height of the projector main body needs to be set again due to the change of the projection distance, the height movement instruction signal 16 is output and the height adjustment drive unit 18 sets the projector stand at an appropriate height. Controlled by.

Next, the position information of the optimum projection magnification, projection position and projection height calculated by the calculating means 12 and the height of the projector stand from the height detecting means 20 input at the currently installed position. The height detection signal and the screen lower end position setting signal from the installation position input means 21 are arithmetically processed, and if the result is a feasible value for the projection position and projection height, the projector stand is adjusted to an appropriate height. Is installed.

However, when the input height detection signal and screen lower end position setting signal have values that cannot be realized by the calculation means 12 with respect to the calculation result, it is necessary to move the projector stand up and down. Then, the height adjusting drive means 18 controls the projector stand to an appropriate height.

Even in such a configuration, the storage means 13
Model number and setting data read from the screen, screen lower end position input means 21 and projection size input means 2
The result of calculating the data input from 2 is displayed on the display device 24 as each instruction signal 14, 15, 16 and 17, and is manually operated based on each instruction signal displayed on the display device 24. The magnification control instruction signal 14 drives the lens driving means 5 to adjust the magnification of the zoom lens 4, and the projection distance movement instruction signal 15 drives the lens driving means 2 to move the focus lens 1 from the projector body to the screen. The distance is adjusted, and the height adjustment drive means 18 is driven by the height movement instruction signal 16 to adjust the installation height of the projector, and further the front-back adjustment drive means 19 is driven by the front-back movement instruction signal 17 to project the projector stand. Appropriate installation can be performed by adjusting the forward and backward movement distance of the. Even when the adjustment or setting is performed by the automatic operation, it is possible to confirm how much the operation is performed by the display on the display device.

In the above-described embodiment, the case of the floor-standing type projector stand has been described, but the present invention is not limited to this, and is applied to a ceiling-mounted projector with a rail. Is equally effective.

Further, in the above-described embodiment, the projector is not limited to the video device or the projector for the video signal from the PC, and the same effect as described above can be obtained even when applied to the optical projector. Needless to say.

In the above-described embodiment, the case of displaying on the display device has been described, but it is also possible to display the image on the screen by projection, whereby the display device 24 can be omitted.

[0031]

As described above, according to the present invention,
Optimal installation conditions can be displayed by inputting the installation conditions into the projector body without the need for conventional image processing work and complicated installation operations, and the installation work can be simplified and the desired projection can be performed with simple input settings. It has an extremely excellent effect that a screen of a size can be obtained and a good image without screen distortion can be obtained. In addition, the connection with the projector stand enables automatic and appropriate installation.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating a configuration according to an embodiment of a projector according to the invention.

FIG. 2 is a block diagram illustrating a configuration of a projector according to another embodiment of the invention.

[Explanation of symbols]

1 ... Focus lens, 2 ... Focus lens driving means, 3 ... Projection distance detecting means, 4 ... Zoom lens, 5 ... Zoom lens driving means, 6 ... Projection magnification detecting means, 7 ... Model discriminating means, 8 ... Projector main body side connector , 11 ... Projector stand side connector, 12 ... Calculation means, 13
... storage means, 14 ... magnification control instruction signal, 15 ... projection distance movement instruction signal, 16 ... height movement instruction signal, 17 ... longitudinal movement instruction signal, 18 ... height adjustment drive means, 19 ... longitudinal adjustment drive means, 20 ... Height detecting means, 21 ... Screen lower end position setting input means, 22 ... Projection size input means, 23 ...
Height input means, 24 ... Display device.

Claims (2)

[Claims] 1. Output means for detecting and outputting distance and magnification information when a projection lens projects an image on a screen, and projection magnification, projection position and projection height position for projecting the image on the screen. Storage means for storing information, input means for inputting installation information of the screen lower end position, desired projection size and height from a reference fixed position, distance and magnification information output by the output means, An arithmetic means for arithmetically processing the information stored in the storage means and the installation information inputted by the input means, and outputting each information of an appropriate magnification control instruction, projection distance movement instruction and height movement instruction; Display means for displaying each information of the magnification control instruction, the projection distance movement instruction, and the height movement instruction output from the computing means, and the magnification control instruction displayed on the display means. The magnification of the projection lens and adjust the instruction information, said adjusting the length of the projection distance the projection lens by the movement instruction information, and characterized by adjusting the installation height by the height movement command information projector. 2. A projection lens for projecting an image on a screen is controlled by a drive unit to detect distance and magnification information when the image is projected on the screen, and the projector main body is determined for each model. A projector main body having a model discriminating means in which discrimination information is set and a connector for transmitting and receiving a signal to and from the model discriminating means and the control means, and a signal is transmitted and received to and from each means in the stand connected to the connector of the projector main body. A connector, a storage unit for reading and storing discrimination information for each model of the projector main body set in the model discrimination unit, and inputting installation information of the screen lower end position, desired projection size and height from a reference fixed position Input means, distance and magnification information output from the control means, and discrimination information stored in the storage means. An arithmetic means for arithmetically processing the installation information inputted by the input means, and outputting each information of an appropriate magnification control instruction, projection distance movement instruction, stand height movement instruction and stand front-back movement instruction, Height adjustment drive means for controlling the height of the stand based on the stand height movement instruction information output, and front-back adjustment drive means for controlling the front-back direction of the stand based on the stand front-back movement instruction information output from the calculation means. A projector stand on which the projector main body is mounted, and a display unit for displaying each information of the magnification control instruction, the projection distance movement instruction, the height movement instruction, and the stand front-back movement instruction output from the arithmetic unit. A projector characterized by being equipped.