JP2005148595A - Projection type video display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projection type video display device which displays an on-screen image in its normal direction when longitudinally placed. <P>SOLUTION: The projection type video display device is equipped with a discrimination means of discriminating whether a liquid crystal projector is laterally or longitudinally installed and a means of displaying an on-screen image by using on-screen display data for lateral installation when it is discriminated that the liquid crystal projector is laterally placed and displaying an on-screen image by using on-screen display data for longitudinal installation when it is discriminated that the liquid crystal projector is longitudinally placed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a projection-type image display device such as an LCD or DLP.

  A system in which a computer screen is enlarged and projected onto a screen using a projection-type image display device is widely used in presentations and the like. The screen aspect of the computer is normally 4: 3 (number of pixels 640 × 480, 800 × 600, 1024 × 768, 1600 × 1200) or 5: 4 (number of pixels 1240 × 1024).

  By the way, it is possible to detach a display generally called a tablet PC from the main body and to use the display in a vertically placed state as well as in a horizontally placed state in a computer capable of handwriting by a touch screen or the like. , It has a function to reverse the vertical and horizontal direction of the image. In the case where an image whose portrait and landscape are reversed by such a computer is input to the projection type video display device and displayed, it can be considered that the projection type video display device itself is displayed vertically.

  However, when the projection-type image display device itself is placed vertically, an on-screen image such as a menu image displayed on-screen is displayed in a state rotated by 90 degrees with respect to the normal orientation. It becomes difficult to control and adjust the video display device. In addition, when the projection type video display device itself is placed vertically, the moving direction of the cursor displayed on the projected video by the remote control operation does not coincide with the direction instructed by the remote control, and there is a problem that the usability is poor. .

  In addition to a normal use state (horizontal state) for projecting a normal horizontally long image, the present invention normally uses a projection type video display device itself for projecting a vertically and horizontally reversed image as a vertically long image. Projection-type image display device that can be used in a state rotated 90 degrees from the state (vertical installation state), and an on-screen image is displayed in a normal orientation in the vertical installation state The purpose is to provide.

  In addition to the normal use state (horizontal state) for projecting a normal horizontally long image, the present invention normally uses a projection type video display device itself for projecting a vertically and horizontally reversed image as a vertically long image. In the projection type video display apparatus that can be used in a state rotated 90 degrees from the use state (vertical state), the moving direction of the cursor on the vertical screen in the vertical state is the direction indicated by the remote control It is an object of the present invention to provide a projection type video display device that can be matched.

  According to the first aspect of the present invention, in addition to a normal use state (horizontal position state) for projecting a normal horizontally long image, a projection type video display device for projecting an image whose portrait and landscape are reversed as a portrait image In a projection-type image display apparatus that can be used in a state in which the device itself is rotated 90 degrees from a normal use state (vertically placed state), when a liquid crystal projector is installed in a horizontally placed state as various on-screen display data A storage means for storing both on-screen display data for horizontal use and on-screen display data for vertical use obtained by rotating the horizontal on-screen display data by 90 degrees in a predetermined direction; Discriminating means for discriminating whether the projector is installed horizontally or vertically, and the liquid crystal projector is installed horizontally If it is determined that the liquid crystal projector is installed in the vertical orientation, the on-screen image is displayed using the horizontal on-screen display data. Means for displaying an on-screen image using the on-screen display data.

  According to the second aspect of the present invention, in addition to a normal use state (horizontal position state) for projecting a normal horizontally long image, a projection type video display device for projecting an image whose portrait and landscape are reversed as a portrait image In a projection-type image display apparatus that can be used in a state in which the device itself is rotated 90 degrees from a normal use state (vertical installation state), whether the liquid crystal projector is installed in a horizontal installation state or a vertical installation state. And a cursor moving means for moving the cursor on the display screen based on a cursor movement command input from the remote controller. The cursor moving means is configured such that the liquid crystal projector is placed in the horizontal position. If it is determined that the cursor has moved, the direction corresponding to the movement direction included in the cursor movement command is recognized as the cursor movement direction, and the cursor position after the movement is When it is determined that the means for setting the cursor display data and the liquid crystal projector is installed in the vertical position, the movement direction included in the cursor movement command is rotated 90 degrees in a predetermined direction. It is characterized in that there is provided means for recognizing the moved direction as the cursor moving direction, determining the cursor position after the movement, and setting the cursor display data.

  According to the present invention, in addition to a normal use state (horizontal state) for projecting a normal horizontally long image, the projection type video display device itself is normally used for projecting a vertically and horizontally reversed image as a vertically long image. In the projection type video display apparatus that can be used in a state rotated 90 degrees from the use state (vertical state), the on-screen image is displayed in a normal orientation in the vertical state.

  Further, according to the present invention, in addition to a normal use state (horizontal state) for projecting a normal horizontally long image, a projection type video display device itself for projecting an image whose portrait and landscape are reversed as a vertically long image In the projection type video display device that can be used in a state rotated 90 degrees from the normal use state (vertically placed state), in the vertically placed state, the moving direction of the cursor on the vertically long screen is indicated by the remote control It will be possible to match the direction.

  Embodiments in which the present invention is applied to a liquid crystal projector will be described below with reference to the drawings.

  1 is a front view when the liquid crystal projector is installed horizontally, and FIG. 2 is a side view of FIG.

  A projection lens 2 is provided on the front surface of the liquid crystal projector 1. On the lower surface of the liquid crystal projector 1, horizontal legs 3 are provided in a pair on the left and right sides. When viewed from the front side of the liquid crystal projector 1, a pair of vertical legs 4 are provided on the left side surface in the vertical direction. A handle 5 is provided on the right side as viewed from the front side of the liquid crystal projector 1. One of the four vertical legs 4 is provided with a leg switch 6 (see FIG. 2) that is turned on when the liquid crystal projector 1 is installed vertically as shown in FIG. ing.

  FIG. 4 shows the electrical configuration of the liquid crystal projector.

  An image signal input from the computer (PC) 10 to the liquid crystal projector 1 is sent to a signal processing circuit 21 having a DRAM 22 and subjected to predetermined signal processing. On-screen display data and cursor display data are set in the DRAM 22 as required by the CPU 30. The image signal subjected to the signal processing by the signal processing circuit 21 and the on-screen display data and cursor display data set in the DRAM 22 are written to the LCD panel 24 via the image signal driver circuit 23. The image written on the LCD panel 24 is projected on a screen (not shown) by a light source lamp (not shown).

  The CPU 30 includes a ROM 31 that stores the program and the RAM 32 that stores necessary data. A leg switch 6 and a remote control signal receiving circuit 33 are connected to the CPU 30. The remote control signal receiving circuit 33 receives a remote control signal from a remote control transmitter (remote control) 34 and supplies it to the CPU 30.

  The PC 10 sends a normal landscape image (image to be displayed as a landscape image) and a landscape image with its portrait and landscape reversed (image to be displayed as a portrait image). There is a case to come.

  The ROM 31 includes various on-screen display data (horizontal on-screen display data) that should be used when the liquid crystal projector is installed horizontally, and various types that should be used when the liquid crystal projector is installed vertically. On-screen display data (vertical on-screen display data) are stored. For example, if the on-screen display data for horizontal placement is an image as shown in FIG. 5A, the on-screen display data for vertical placement corresponding to the image is shown in FIG. 5 (a) is an image obtained by rotating the image 90 degrees counterclockwise.

  In this embodiment, when the liquid crystal projector is installed in the vertical position, the CPU 30 sets the movement direction included in the vertical direction when a cursor movement signal is input from the remote control transmitter (remote control) 34. It has a function to generate the cursor display data by converting the data.

  The CPU 30 determines whether the liquid crystal projector is installed horizontally or vertically based on a signal from the leg switch 6 and performs on-screen image display processing and cursor display processing according to the determination result. I do.

  Hereinafter, the processing of the CPU 30 when the CPU 30 determines that the liquid crystal projector is installed horizontally and the processing of the CPU 30 when the CPU 30 determines that the liquid crystal projector is installed vertically are described. explain.

(A) Description of processing of the CPU 30 when the CPU 30 determines that the liquid crystal projector is installed horizontally

  When the CPU 30 determines that the liquid crystal projector is installed horizontally, when displaying a predetermined on-screen image, the CPU 30 selects the corresponding on-screen display data stored in the ROM 31 for the corresponding on-screen display data. Screen display data is selected and set at a predetermined position in the DRAM 22. In the case where the liquid crystal projector is installed horizontally, when a cursor movement command is input by remote control operation, the CPU 30 generates cursor display data by a conventional method and sets it in the DRAM 22. That is, the CPU 30 recognizes the direction according to the movement direction included in the cursor movement command as the cursor movement direction, determines the cursor position after the movement, and sets the cursor display data in the DRAM 22.

  When it is determined that the liquid crystal projector is installed horizontally, the above processing is performed, so a normal landscape image (image to be displayed as a landscape image) has been sent. When the liquid crystal projector is installed horizontally, the image projected on the screen is, for example, as shown in FIG.

In FIG. 6, reference numeral 51 denotes a projection screen, which is a horizontally long screen with an aspect ratio of 4: 3. Letter "ABCDEF" on the projection screen 51 is a normal horizontal length image transmitted from PC1. Reference numeral 52 denotes a menu screen displayed on the screen, and is set to be displayed at the upper left position on the horizontally long screen. Reference numeral 53 indicates a cursor.

  The operation directions a, b, c, and d of the cursor movement key 41 on the remote controller 34 correspond to the movement directions a, b, c, and d of the cursor 53 on the horizontally long screen, respectively. That is, the operation direction of the cursor movement key 41 provided on the remote controller 34 and the movement direction of the cursor 53 on the horizontally long screen match.

  By the way, when the liquid crystal projector is installed horizontally, when a horizontally long image (an image to be displayed as a vertically long image) with the image vertically and horizontally reversed is sent, the display image is, for example, FIG. As shown in FIG. In such a case, the user installs the liquid crystal projector vertically. If the liquid crystal projector is installed vertically and the CPU 30 does not change the processing for on-screen image display and cursor display, the display is as shown in FIG. As can be seen from FIG. 8, the menu screen 52 displayed on the screen is in a state of being rotated 90 degrees with respect to the normal direction, so that it is difficult to perform an operation. Further, since the movement direction of the cursor 53 on the vertically long screen is 90 degrees clockwise with respect to the operation direction of the cursor movement key 41 provided on the remote controller 34, it is difficult to operate the cursor. Therefore, in this embodiment, when it is determined that the liquid crystal projector is installed vertically, the processing for on-screen image display and cursor display is changed.

(B) Description of the processing of the CPU 30 when the CPU 30 determines that the liquid crystal projector is installed vertically

  When the CPU 30 determines that the liquid crystal projector is installed vertically, when displaying a predetermined on-screen image, the CPU 30 selects the corresponding on-screen display data stored in the ROM 31 for the corresponding on-screen display data. Screen display data is selected and set at a predetermined position in the DRAM 22. In the case where the liquid crystal projector is installed vertically, when a cursor movement command is input by remote control operation, the CPU 30 rotates the movement direction included in the cursor movement command by 90 degrees counterclockwise. The direction is recognized as the cursor movement direction, the cursor position after the movement is determined, and the cursor display data is set in the DRAM 22.

  If it is determined that the liquid crystal projector is installed vertically, the above-described processing is performed. Therefore, a horizontal image obtained by reversing the vertical and horizontal directions of a normal horizontal image (should be displayed as a vertical image) When the image) is sent and the liquid crystal projector is installed vertically, the image projected on the screen is, for example, as shown in FIG.

  In FIG. 9, reference numeral 61 denotes a projection screen, which is a vertically long screen with an aspect ratio of 3: 4. The characters “ABCDEF” on the projection screen 61 are images sent from the PC 1 (images whose portrait and landscape are reversed). Reference numeral 62 denotes a menu screen that is displayed on-screen, and is displayed in a normal orientation at an upper left position on the vertically long screen (lower left position on the DRAM). Reference numeral 63 indicates a cursor. Further, the operation direction of the cursor movement key 41 provided on the remote controller 34 coincides with the movement direction of the cursor 63 on the vertically long screen. That is, the operation directions a, b, c, and d of the cursor movement key 41 on the remote controller 34 coincide with the movement directions a, b, c, and d of the cursor 63 on the vertically long screen.

It is a front view which shows the case where a liquid crystal projector is installed horizontally. It is a side view of FIG. It is a front view which shows the case where a liquid crystal projector is installed vertically. It is a block diagram which shows the electrical structure of a liquid crystal projector. It is a schematic diagram which shows an example of the on-screen display data for horizontal installation and the on-screen display data for vertical installation stored in ROM. FIG. 5 is a schematic diagram illustrating an example of an image projected on a screen when a normal landscape image (image to be displayed as a landscape image) has been sent and the liquid crystal projector is installed horizontally. is there. An example of an image projected on a screen when a horizontally long image (an image to be displayed as a vertically long image) in which the aspect of the image is reversed is sent when the liquid crystal projector is installed horizontally. It is a schematic diagram shown. It is a schematic diagram which shows the example of the image projected on a screen, when it assumes that CPU30 does not change the process with respect to an on-screen image display and a cursor display, when a liquid crystal projector is installed vertically. A landscape image (image to be displayed as a portrait image) obtained by reversing the portrait and landscape of a normal landscape image has been sent, and is projected on the screen when the liquid crystal projector is installed vertically. It is a schematic diagram which shows the example of an image.

Explanation of symbols

6 Leg switch 21 Signal processing circuit 22 DRAM
23 Image signal driver circuit 24 LCD panel 30 CPU
31 ROM
32 RAM
33 Remote control signal receiving circuit 34 Remote control transmitter

Claims (2)

In addition to the normal use state (horizontal state) for projecting a normal horizontally long image, the projection type video display device itself is 90 degrees from the normal use state in order to project an image whose portrait and landscape are reversed as a vertically long image. In a projection-type image display device that can be used in a rotated state (vertically placed state),
As various on-screen display data, the horizontal on-screen display data to be used when the liquid crystal projector is installed in the horizontal position and the vertical on-screen display data rotated 90 degrees in a predetermined direction. Storage means for storing both on-screen display data for use in advance,
A discriminating means for discriminating whether the liquid crystal projector is installed horizontally or vertically;
When it is determined that the liquid crystal projector is installed in the horizontal position, the on-screen image is displayed using the on-screen display data for horizontal installation, and it is determined that the liquid crystal projector is installed in the vertical position. Means for displaying an on-screen image using vertical on-screen display data,
A projection-type image display device comprising: In addition to the normal use state (horizontal state) for projecting a normal horizontally long image, the projection type video display device itself is 90 degrees from the normal use state in order to project an image whose portrait and landscape are reversed as a vertically long image. In a projection-type image display device that can be used in a rotated state (vertically placed state),
Cursor movement that moves the cursor on the display screen based on the determination means for determining whether the LCD projector is installed horizontally or vertically, and the cursor movement command input from the remote control Means,
The cursor moving means recognizes the direction corresponding to the moving direction included in the cursor moving command as the cursor moving direction when it is determined that the liquid crystal projector is installed in the horizontal position, and after moving If it is determined that the cursor position is determined, the cursor display data is set, and the liquid crystal projector is installed in the vertical position, the movement direction included in the cursor movement command is set to the predetermined direction. A projection-type image display device comprising means for recognizing a direction rotated 90 degrees as a cursor movement direction, determining a cursor position after movement, and setting cursor display data.

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