JPH05142652A - Enlargement display device for meeting - Google Patents

Abstract

PURPOSE:To easily enlarge and project an image on an opaque sheet and various images of solid bodies, etc., by sending a still picture of a subject, which is picked up by an image pickup means, to an enlargement display means by a transmitting means, and enlarging and projecting it there. CONSTITUTION:An overhead projector (OHP) is equipped with a projector main body 1 which has a light source internally and a liquid crystal display part 2 mounted on the projector main body 1. A head 6 equipped with a lens 4 and a reflecting mirror 5 for enlarging and projecting screen data displayed on the liquid crystal display part 2 on a screen is fitted to the tip of a stay 3 arranged on the rear surface of the projector main body 1. A video camera 13 where the CCD image pickup element is mounted is connected through a cable 15 to a connector 14 arranged on the front surface of the liquid crystal display part 2. Then the image of the subject nearby the OHP is directly picked up by the video camera 13 and sent in the OHP, which enlarges and projects the image.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a magnifying display device for meetings,
In particular, the present invention relates to a magnifying display device for meetings that magnifies and projects a still image.

[0002]

2. Description of the Related Art Overhead projectors (hereinafter referred to as OH
P) is a projection device that allows a large number of people to view the screen at the same time at a conference or lecture. This O
As an HP, an electronic OHP that provides a transmissive liquid crystal panel instead of a transparent film and magnifies and projects the display screen
Has already been developed.

In the conventional electronic OHP, a personal computer is connected and the image data created therein is displayed on the liquid crystal panel.

[0004]

SUMMARY OF THE INVENTION In the above conventional configuration,
In order to display an image, it is necessary to create the image by an external device such as a personal computer. For this reason,
Document data is created using word processing software, and graphic data is created using image scanners and drawing software. Also, to create an easy-to-see image,
Various editing processes are also required.

In addition to such a planar image, the object to be displayed by the OHP may be various three-dimensional objects. In such a case, in the conventional configuration, it is necessary to image a three-dimensional object with, for example, a camera and read the captured image with a scanner or the like. Furthermore, conventional electronic O
The HP cannot directly display handwritten documents and photographs drawn on unusable opaque paper.

An object of the present invention is to make it possible to directly handle an image on a three-dimensional object or an opaque sheet.

[0007]

A magnifying display device for a meeting according to the present invention comprises an image pickup means for picking up a still image, a transmission means, and a magnifying projection means. The magnifying and projecting means is for magnifying and projecting a still image. The transmission means is for transmitting a still image from the image pickup means to the enlarged projection means.

[0008]

In the enlarged display device for meetings according to the present invention, when the image pickup means picks up an image on a three-dimensional object or an opaque sheet, the transmitting means transmits the picked-up still image from the image pickup means to the magnifying projection means. The magnifying and projecting means magnifies and projects the still image transmitted by the transmitting means. As a result, various images can be directly captured and enlarged and projected.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an OHP which is an enlarged display device for meetings according to an embodiment of the present invention. The OHP includes a projector main body 1 having a built-in light source, and a liquid crystal display unit 2 mounted on the projector main body 1. On the back surface of the projector body 1, a stay 3 is arranged that protrudes upward and has a tip bent forward. At the tip of stay 3,
A head 6 having a lens 4 and a reflecting mirror 5 for enlarging and projecting screen data displayed on the liquid crystal display unit 2 is attached to a screen (not shown). The lens 4 can be moved up and down, and the focus can be adjusted.

The liquid crystal display section 2 is provided with a liquid crystal display panel (hereinafter referred to as LCD) 7 which can be moved up and down by a driving means (not shown) at the center thereof. This vertical movement is performed when changing the display magnification. On the front surface of the liquid crystal display unit 2, a disk drive device (hereinafter, referred to as FDD) 8 for driving the flexible disk 8a, a light receiving unit 10 for receiving an infrared signal from a remote controller 9, a power switch 11, and , RS232C interface 30 (FIG. 2) connector 14 is located. This connector 1
A video camera 13 equipped with a CCD image pickup device is connected to 4 via a cable 15. A card slot 12 for inserting the IC card 12a is arranged on one side surface of the liquid crystal display unit 2.

The video camera 13 has a pistol-like appearance, and the trigger portion is a shutter switch 53. A still image can be captured by operating the shutter switch 53. The liquid crystal display unit 2 includes a CPU 21 as shown in FIG. The CPU 21 has a ROM 22 and an FD interface 2 via the system bus 20.
3, IC card interface 24, remote control interface 25, RS232C interface 30,
They are connected to the display controller 26 and the bus switch 27, respectively. A control program for controlling the OHP is stored in the ROM 22.

The FD interface 23 is connected to the FDD 8. The IC card interface 24 is connected to the card slot 12. The remote control interface 25 is connected to the light receiving unit 10. The display controller 26 is connected to the row driver 28 and the column driver 29 of the LCD 7, respectively, and controls them to display on the LCD 7. The bus switch 27 controls connection between the local bus 31 and the system bus 20. RS232C interface 23
Connection control of signals with the video camera 13 is performed.

A screen memory 32 is connected to the local bus 31. The screen memory 32 is a RAM that stores image data in a bitmap format, and stores the image data stored in the flexible disk 8a and the IC card 12a or the image data captured by the video camera 13 for one screen. is there. The screen memory 32 can be input / output to / from the local bus 31. The image data stored in the screen memory 32 is stored in the local bus 3
1 to the column driver 29 and the row driver 28, respectively.

The video camera 13, as shown in FIG.
It has a PU 41. CPU 41 is system bus 40
The ROM 42, the screen memory 43, the CCD interface 44, the RS232C interface 45, and the shutter interface 46 are respectively connected via the. A control program for controlling the video camera 13 is stored in the ROM 42. Screen memory 43
Is for storing the captured still image for one screen.

The CCD interface 44 has an A / D
The converter 47 is connected. The A / D converter 47 has
The amplifier circuit 48 is connected. The amplifier circuit 48 has a C
The image data picked up by the CD image pickup device 50 is given via the CCD reading circuit 49. The RS232C interface 45 is connected to the liquid crystal display unit 2 via the cable 15.
It is connected to the. The shutter interface 46 is
It is connected to an electronic shutter 52 via a shutter circuit 51. The shutter circuit 51 drives the electronic shutter 52 based on the operation of the shutter switch 53.

Next, the control operation of the OHP thus constructed will be described. 4. Note that FIG. 4 shows the processing contents of the main routine of the CPU 21. First, in step S1, the memory and registers in the CPU 21 are initialized. In step S2, the contents of the screen memory 32 are cleared. In step S3, it is determined whether or not an FD read command is issued from the remote controller 9. In step S4, it is determined whether or not an image pickup command is issued from the remote controller 9.

In step S5, the display controller 2
6 is instructed to end the display, and the display on the LCD 7 is ended once. In step S6, the bus switch 27 is controlled to connect the system bus 20 and the local bus 31. When the bus connection process in step S6 ends, the process returns to step S2. When the FD read command is issued, the process proceeds from step S3 to step S7. In step S7, the read routine shown in FIG. 5 is executed. Here, first, in step S12, the display controller 26 is instructed to end the display. In step S13, the bus switch 27 is controlled,
The system bus 20 and the local bus 31 are connected. In step S14, FDD8 (or card slot 1
The image data is read from the flexible disk 8a (or IC card 12a) by 2). Step S15
Then, the image data read from the flexible disk 8a is written in the screen memory 32. In step S16, a display routine is executed.

In the display routine, the display controller 26 is instructed to display in step S17. Step S1
In 8, the bus switch 27 is controlled to control the system bus 20.
And the local bus 31 are separated. In step S19, the row driver 28 and the column driver 29 are driven to display the image data stored in the screen memory 32 on the LCD 7. When the display routine ends in this way, the program returns to the main routine.

When an image pickup command is issued, the process shifts from step S4 to step S8 in FIG. In step S8, the imaging routine shown in FIG. 6 is executed. Here, first, in step S21, the display controller 26 is instructed to end the display. In step S27, the bus switch 27
To connect the system bus 20 and the local bus 31. In step S23, a transmission command is output to the video camera 13 via the RS232C interface 30. In step S24, the data from the video camera 13 is received. In step S25, the received image data is written in the screen memory 32. In step S26,
The display routine shown in FIG. 5 is executed. In this way
The image data captured by the video camera 13 is displayed.

On the other hand, in the video camera 13, the CPU 41 performs the following operations as shown in FIG. Step S31
Then, the memory, the register, etc. in the CPU 41 are initialized. In step S32, the contents of the screen memory 43 are cleared. In step S33, the liquid crystal display unit 2 waits for a transmission command to be output. When the transmission command is output, the process proceeds to step S34. In step S34, the operation of the shutter switch 53 by the operator is awaited. When the shutter switch 53 is turned on, the process proceeds to step S35. In step S35, the electronic shutter 52 is operated. In step S36, the image data picked up by the CCD image pickup device 50 is read, and the read image data is temporarily stored in the screen memory 4
Store in 3. In step S37, the screen data stored in the screen memory 43 is read out and is read by RS232C.
It is transmitted to the liquid crystal display unit 2 via the interface 45. When this transmission is completed, the process returns to step S32.

In this case, the subject near the OHP is directly imaged by the attached video camera 13 and the OHP is taken.
Since it is possible to magnify and project, it is possible to magnify and project any kind of image. [Other Embodiments] (a) In the above embodiment, the video camera is RS232C.
Although the interface is used for connection, it may be directly connected to the OHP. (B) In the above-described embodiment, the video camera and the liquid crystal display unit are connected by a cable, but image data may be transmitted and received by a radio wave without using a cable.

[0022]

According to the enlarged display device for assembly according to the present invention,
Since the still image of the subject imaged by the image pickup means is sent to the enlargement projection means by the transmission means and is enlarged and projected there, various images such as an image on the opaque sheet and a three-dimensional object can be easily enlarged and projected. ..

[Brief description of drawings]

FIG. 1 is a perspective view of an OHP according to an embodiment of the present invention.

FIG. 2 is a control block diagram of an OHP.

FIG. 3 is a control block diagram of the video camera.

FIG. 4 is a main flowchart of OHP.

FIG. 5 is a flowchart showing a read routine and a display routine.

FIG. 6 is a flowchart showing an imaging routine.

FIG. 7 is a main flowchart of the video camera.

[Explanation of symbols]

 1 Projector Main Body 2 Liquid Crystal Display 6 Head 7 LCD 9 Remote Control 13 Video Camera 15 Cable 30, 45 RS232C Interface

Claims (1)

[Claims] 1. An image pickup unit for picking up a still image, a magnifying projection unit for magnifying and projecting the still image, and a transmitting unit for transmitting the still image from the image picking unit to the magnifying and projecting unit. Enlarged display device for meetings equipped with.