JPH05289046A - Network type projecting device - Google Patents

Abstract

PURPOSE:To provide the device which can be carried easily and has versatility by providing a controller for displaying display information sent from other computer through a network interface, on a transmission type liquid crystal display of a display device. CONSTITUTION:The device is provided with a display device provided with a transmission type liquid crystal display 37, a projecting device for using the transmission type liquid crystal display 37 of the display device as stage glass, a network interface 38 to be connected to a network 1, and a controller 31 for displaying display information sent from other computer through the network interface 38, on the transmission type liquid crystal display 37 of the display device. In such a state, the display information sent through the network 1 from other computer is fetched through the network interface 38, displayed on the transmission type liquid crystal display 37, and the projecting device is put thereon, by which the transmission type liquid crystal display 37 is projected as stage glass to a photographing screen 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a network type project device for projecting a screen output of a computer connected to a network on a screen.

[0002]

2. Description of the Related Art Conventionally, when displaying screen display information of a computer connected through a network on a project device, an interface for a liquid crystal display panel is connected to an image interface such as a video signal output from the computer to a display. However, the liquid crystal display was mounted on an overhead projector for use.

[0003]

However, in such a conventional display system, an overhead projector and a computer equipped with an interface therefor are separately required. There is a problem that it is inconvenient because the projector and the computer body have to be carried and used. In addition, the number of computers that can be used is limited, and the versatility is poor.

The present invention has been made in view of such conventional problems, and an object thereof is to provide a network type project device which is easy to carry and has versatility.

[0005]

A network-type project device according to the present invention is a display device having a transmissive liquid crystal display, a projection device having the transmissive liquid crystal display of the display device as a stage glass, and a network connection. And a control device for displaying the display information sent from another computer through the network interface on the transmissive liquid crystal display of the display device.

In addition, the present invention may use a projection display projector instead of the display device and the projection device having the transmissive liquid crystal display.

[0007]

In the network type project device of the present invention, the display information sent from another computer through the network is taken in through the network interface and is displayed on the transmissive liquid crystal display. The liquid crystal display can be used as a stage glass to project an image displayed on the projection screen.

Further, in the network type project apparatus of the present invention, by using the projection type display projector instead of the display apparatus and the projection apparatus having the transmissive liquid crystal display, the display information sent from another computer through the network can be displayed. It can be captured via a network interface and projected and displayed directly on the screen by a projection display projector.

[0009]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 2 shows a system configuration of an embodiment of the present invention, and FIG. 1 shows a circuit configuration of an embodiment of the present invention. First, as shown in FIG.
Computers 2a and 2b are connected to a network 1 that is standardly adopted in the industry, and a network type project device 3 according to an embodiment of the present invention.
Are connected. 4 is a projection screen.

The network-type project device 3 of this embodiment includes a control device 31, which is composed of a microprocessor as shown in FIG. 1, a system bus 32 for transmitting data, addresses, control signals, etc. Main memory 3 for storing programs and data
3. Frame memory 3 that stores the image to be displayed on the screen
4 is equipped. This frame memory 34 is
Corresponding to a pixel, for example, 1 byte stores index information such as color or gradation.

The network type project device 3
Is a display controller 35 that generates a display timing signal, a look-up table 36 that converts the screen color or gradation index information read from the frame memory 34 into actual RGB or monochrome luminance information, and outputs the converted information. A transparent liquid crystal display 37 such as an LCD for displaying the output of the look-up table 36 as an image and a network interface 38 connected to the network 1 are provided.

Further, the network type project device 3
Is a projection device using the transmissive liquid crystal display 37 as a stage glass, and includes a light source 39, a condenser lens 310,
The projection lens 311, the reflecting mirror 312, and the projection screen 4 are provided.

Next, the operation of the network type project device having the above configuration will be described.

When the screens of the computers 2a and 2b connected to the network 1 are projected and displayed on the projection screen 4, the computers 2a and 2b are connected to the network 1.
Through the communication with the control device 31 in the network type project device 3, the procedure for displaying the screen is performed. The control device 31 supports the screen display according to the network display software stored in the network interface 38 and the main memory 33. That is, the display commands and data from the computers 2a and 2b are transmitted to the network type project device 3 through the network 1 and the network interface 38, and the control device 31 interprets the received commands and data according to the network display protocol, and the frame memory 3
Draw to 4. Then, the contents of the frame memory 34 are displayed on the transmissive liquid crystal display 37 under the control of the display controller 35 and the display hardware of the look-up table 36.

Therefore, the light condensed by the condenser lens 310 from the light source 39 is applied to the transmissive liquid crystal display 37, and the image displayed on the transmissive liquid crystal display 37 is projected through the projection lens 311 and the reflecting mirror 312. The image is projected on the screen 4 and is projected and displayed in the same manner as the overhead projector.

In this way, the images displayed on the screens of the computers 2a and 2b connected to the network 1 are transmitted to the network type project apparatus 3 via the network 1 and are projected and displayed on the projection screen 4.

The present invention is not limited to the above-described embodiment, and for example, if a projection type display projector is used instead of the transmissive liquid crystal display, direct projection display can be performed. Become. The network protocol is not limited, and various standard protocols can be used. Further, the network type project device may be provided with an input device such as a keyboard or a mouse.

[0019]

As described above, according to the present invention, it is possible to display the screen display of all the computers equipped with the standard network type display system on the projection screen, which is highly versatile, and the computer which displays the screen. It is possible to save the trouble of moving the computer because it is not necessary to install in the place where the screen is displayed, and it is possible to display the screens of a plurality of computers connected to the network on one projection screen.

[Brief description of drawings]

FIG. 1 is a block diagram showing a circuit configuration of an embodiment of the present invention.

FIG. 2 is a block diagram showing a system configuration of the above embodiment.

[Explanation of symbols]

 1 Network 2a, 2b Computer 3 Network Project Device 4 Projection Screen 31 Controller 32 System Bus 33 Main Memory 34 Frame Memory 35 Display Controller 36 Lookup Table 37 Transmissive Liquid Crystal Display 38 Network Interface 39 Light Source 310 Condenser Lens 311 Projection Lens 312 reflector

Claims (2)

[Claims] 1. A display device having a transmissive liquid crystal display, a projection device having the transmissive liquid crystal display of the display device as a stage glass, a network interface for connecting to a network, and another device through the network interface. A network-type project device, comprising: a control device for displaying display information sent from a computer on a transmissive liquid crystal display of the display device. 2. The network-type project device according to claim 1, wherein a projection-type display projector is used in place of the display device and the projection device having the transmissive liquid crystal display. ..