JPH05249931A - Projector device - Google Patents

Abstract

PURPOSE:To project a desired image on a display screen without writing or printing an image source in or on a paper sheet. CONSTITUTION:A projector device is provided with a network connecting part 1 to receive an external image forming data and an image forming program from an external terminal device and a control part 3 to create and output a desired image signal and a synchronous signal from the received image forming data according to this inputted program under a command inputted from the external terminal device. An output of the control part 3 is inputted to a projecting cathode-ray tube 4, and a desired image is outputted, and as for the outputted image, an output of the image is reflected in the desired direction by means of a reflecting mirror 5, and the outputted image is projected on an externally arranged display screen 8 by means of a projecting lens 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projector device for displaying video data created by an information processing device such as a personal computer on a display screen.

[0002]

2. Description of the Related Art Conventionally, a projector device used in a conference or a seminar has a structure in which an image source and a lens are interposed between a light source and a display screen and an image of the image source is projected on the display screen. , The image source drawn on the dedicated projector paper drawn by the user is optically projected and displayed on the screen. Therefore, a user draws video data on a projector paper or creates an original using a personal computer or a word processor and prints it on a projector paper and uses it as a video source.

[0003]

The above-mentioned conventional projector device can store a large amount of data created by a personal computer or a word processor on a floppy disk or the like, but once the data is manually put on the projector paper. It is necessary to create what is drawn or printed as an image source, and it has a drawback that it takes a lot of time to create it. In addition, it is necessary to store the created image source so that it does not get scratched or crease, and there is a disadvantage in that this storage is troublesome.

[0004]

A projector device according to the present invention is a network connection unit for receiving video generation data created by an external terminal device and a program for converting the video generation data into video data. And a program for converting the video generation data and the video data received via the network connection unit, and based on the received program, the received video generation data as an RGB signal which is a video signal. A controller for outputting and outputting a sync signal for the RGB signals, a projection cathode ray tube for inputting the RGB signals and the synchronization signal to generate and outputting an optical image, and an output for the projection cathode ray tube. A reflecting mirror that reflects an optical image in a desired direction and an optical image reflected by the reflecting mirror are set at an external desired position. It is constituted by a light projecting lens for projecting the projection screen that is.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a projector device of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the projector apparatus of the present invention. In FIG. 1, the projector device includes a network connection unit 1 connected to an external terminal device (not shown) by a connection cable 2, a control unit 3 that receives the output of the network connection unit 1, and an output side of the control unit 3. A cathode ray tube 4 for projection, a reflecting mirror 5 for reflecting the output light from the cathode ray tube 4 for projection in a predetermined direction, an adjusting means 6 for adjusting the focus and brightness of the cathode ray tube 4 for projection, and reflection. It is composed of a light projecting lens 7 for forming an image of the output light reflected by the mirror 5 on the display screen 8. FIG. 2 is a block diagram showing the details of the control unit 3 described above. The control unit 3 uses the main memory 32.
A program ROM 33, a font ROM 34 storing image information of characters corresponding to a character code, a network controller 35, and a display controller 37.
And a microprocessor 31 which is connected to the video memory 38 and all of these components and performs control according to an external command. In such a configuration,
A user sends a control program for the projector device from a terminal device (not shown) to the control unit 3 in the projector device via the connection cable 2 and the network connection unit 1, and then the connection cable 2 and the network connection unit 1 When a data transmission instruction and data stored in the storage unit of the above-mentioned terminal device are sent to the projector device from the outside via the, the microprocessor 31 causes the program ROM 33 to operate.
The program for receiving the control program, which is built in in advance, is executed, and the control program of the projector device is loaded into the main memory 32 through the network controller 35. The microprocessor 31 starts the execution of the control program expanded on the main memory 32, then accepts a data write instruction from a terminal device (not shown) through the network controller 35, and stores it in the storage means of the terminal device described above. The stored image generation data is loaded into the main memory 32. After that, the microprocessor 31 converts the character code in the data into the font data corresponding to the character code stored in the font ROM 34, that is, the video data based on the data stored in the main memory 32, and the video memory 38 To memorize. The graphic data is sent from the terminal device through the network connection unit 1 to the graphic data, is processed according to the control program loaded on the main memory 32, is converted into video data, and is stored in the video memory 38. .. Display controller 37
Converts the above-mentioned font data and video data stored in the video memory 38 into RGB signals 39 and outputs them to the projection cathode-ray tube 4 together with the synchronization signal 40. RGB signal 39 and synchronization signal 4 output to the projection cathode-ray tube 4.
An image is output to the CRT 4 for projection by 0. This output is reflected by the reflecting mirror 5, enlarged by the light projecting lens 7 and projected on the display screen 8. At this time, the focus and brightness of the projection cathode-ray tube 4 are adjusted by the adjusting means 6 to obtain the optimum display. Further, by issuing a next page display instruction or a designated page display instruction from the terminal device, data of an arbitrary page can be displayed.

Next, another embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a block diagram showing another embodiment of the present invention. In the figure, 10 is a keyboard,
20 is a floppy disk drive, 30 is a control unit, 4
Is a cathode ray tube for projection, 5 is a reflecting mirror, 6 is an adjusting means, 7 is a projection lens, and 8 is a display screen.

FIG. 4 is a block diagram of the control unit 30 shown in FIG. At the same time, the control unit 30 responds to the main memory 32, the program ROM 33 storing the program to be executed, the font ROM 34 storing the character image data associated with the character code, and the input from the keyboard. A keyboard controller 41 that outputs a command, a floppy disk drive controller 42 that reads data from a floppy disk, and a display controller 3 that outputs an image signal to be projected as an RGB signal and also a synchronization signal.
7 and a video memory 38.

In such a configuration, when the user sets the floppy disk storing the data to be projected in the floppy disk drive 20 and inputs a data reading instruction command from the keyboard 1, the microprocessor is passed through the keyboard controller 41. 31 receives this command, accepts the data reading instruction,
The floppy disk controller 42 is controlled to load the data from the floppy disk into the main memory 32. After that, the microprocessor 31 sets the main memory 3
Based on the data loaded on 2, the character code in the data is converted into a corresponding character image by referring to the font data in the font ROM 34 and stored in the video memory 38, and the graphic data is stored in the program ROM 33. Microprocessor 3 according to the built-in program
1 is converted into video data and stored in the video memory 38. The display controller 37 converts the image data stored in the image memory 38 into an RGB signal 39 and outputs it to the projection cathode-ray tube 4 shown in FIG. 3 together with the synchronization signal 40. RGB signal 3 output to the projection cathode-ray tube 4
An image is output to the projection cathode-ray tube 4 by 9 and the synchronizing signal 40. This output is reflected by the reflecting mirror 5, enlarged by the light projecting lens 7 and projected and displayed on the display screen 8. At this time, the adjusting means 6 adjusts the focus and brightness of the CRT 4 for projection to adjust to the optimum display.
Further, by issuing a next page display instruction or a designated page display instruction from the keyboard 1 to the control unit 30, it is possible to display the data of an arbitrary page.

[0010]

With the projector device according to the present invention, it is possible to store the image generation data for the projector created by the information processing device such as a personal computer in the storage means or the floppy disk of the terminal device (not shown). In other words, it is possible to eliminate the need to create an image source from a projector paper, which conventionally takes a long time to operate, and to save the troublesome storage of the projector paper.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a projector apparatus of the present invention.

FIG. 2 is a block diagram showing details of a control unit in the embodiment shown in FIG.

FIG. 3 is a block diagram showing another embodiment of the present invention.

FIG. 4 is a block diagram showing details of a control unit shown in FIG.

[Explanation of symbols]

 1 Network Connection Section 3 Control Section 4 Projection CRT 5 Reflector 6 Adjusting Means 7 Projection Lens 10 Keyboard 20 Floppy Disk Drive 30 Control Section 31 Microprocessor 32 Main Memory 33 Program ROM 34 Font ROM 37 Display Controller 38 Video Memory 42 Floppy disk controller

Claims (2)

[Claims] 1. A network connection unit for receiving video generation data created by an external terminal device and a program for converting the video generation data into video data, and received via the network connection unit. The video generation data and a program for converting the video data are received, and based on the received program, the received video generation data is output as an RGB signal which is a video signal, and a synchronization signal for the RGB signal. And a projection cathode ray tube that generates and outputs an optical image by inputting the RGB signal and the synchronization signal, and an optical image output by the projection cathode ray tube is reflected in a desired direction. A reflector and a projection lens for projecting an optical image reflected by the reflector onto a projection screen installed at a desired external position. A projector device comprising: 2. A floppy disk drive for reading the video generation data from a floppy disk storing pre-generated video generation data, a keyboard for inputting an external command, and the keyboard An RG which is a video signal obtained by reading the video generation data from the floppy disk by the floppy disk drive and converting the video generation data into video data in accordance with a program stored in advance in accordance with an input external command.
A control unit for generating and outputting a B signal and a synchronization signal, and the RG
A projection cathode-ray tube that receives the B signal and the synchronization signal as input and generates and outputs an optical image; and a reflecting mirror that reflects the optical image output from the projection cathode-ray tube in a desired direction.
A projector device, comprising: a projection lens for projecting an optical image reflected by the reflecting mirror onto a projection screen installed at a desired external position.