KR19990009437A - Monitor unit with scanner function - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitor device having a scanner function capable of scanning a screen and various images of a computer system with a scanner function. In the monitor mode, a screen output is normally performed. The beam reflected from the electron gun is reflected on the document through the scan window and detected by the light receiving sensor. The buffer is then provided to the monitor circuit through a buffer, which is provided to the host through an RGB signal line to perform a scanning operation. As such, since the monitor is equipped with a scanner function, the user does not have to pay a separate cost, and the computer system can be efficiently installed even in a small space.

Description

MONITOR WITH SCANNER FUNCTION APPARATUS

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitor apparatus, and more particularly, to a monitor apparatus having a scanner function capable of scanning a screen output and various images of a computer system.

1 is a view showing an example of the configuration of a general computer system.

Referring to FIG. 1, a general computer system includes a system main body 110 having a CPU, a memory, and the like, a monitor device 120 that receives screen output data in connection with this, and performs a screen output, and a keyboard as a data input device. 130 is provided. In addition, the printer 140 may be provided as a device for outputting data, and the scanner 150 may be provided as an image data input device.

Currently, a scanner used as an input device of a computer system is generally an input device that reads information of a photographic image or a figure on paper and converts it into graphic information of a computer. This is expensive compared to other input devices. However, it is an essential tool for image processing or electronic publishing (DTP). The types of scanners can be broadly divided into page scanners (or flatbed scanners) that read one page, such as copiers, and relatively inexpensive hand scanners that hold and push the scanner by hand. Among the color-capable products, the high-end is capable of inputting 16.7 million colors at 800 dpi with 24-bit data representation.

However, since such scanner equipment is generally expensive equipment, it is burdensome for an individual user to purchase and has to be provided in a computer system additionally, thereby securing a corresponding peripheral space.

Accordingly, an object of the present invention is to provide a monitor device having a scanner function by adding a scanner function to the monitor device as proposed to solve the above-mentioned problems.

1 is a view showing a configuration example of a general computer system,

2 is an external view of a monitor device having a scanner function according to a preferred embodiment of the present invention;

3 is a schematic side view of the monitor device shown in FIG. 2;

4 is a circuit diagram of a monitor device having a scanner function according to a preferred embodiment of the present invention.

Explanation of symbols for the main parts of the drawings

110: system body 120, 200: monitor device

130: keyboard 140: printer

150: scanner 210: CRT

212: electron gun 214: scan window

220: window cover 230: switch

250: motor 260: light receiving sensor

310: monitor circuit 320: scanner driver

330: switching unit 332, 334: three-phase buffer

340 buffer

According to a feature of the present invention for achieving the object of the present invention as described above, the monitor device having a scanner function to receive the screen output data from the host to perform the data processing process to perform the screen output: from the host A monitor circuit for receiving data for screen output and performing data processing for screen output; A CRT having a scan window for scanning; A motor for a scanning operation; A scan operation instruction unit for instructing a scanning operation; A light receiving sensor for detecting a beam scanned from the electron gun of the CRT when reflected by the scan window; A buffer for temporarily storing the data scanned by the light receiving sensor; A switching unit which provides an RGB signal provided from the monitor circuit to the CRT during a normal screen output operation, and provides scanning data stored in the buffer to the monitor circuit during a scanning operation; And a scanner controller configured to provide a plurality of control signals for scanning to each part in response to an input of the scan operation instruction unit.

In this embodiment, the scan window is configured on one lower pixel line of the CRT.

In this embodiment, the switching unit is provided with the RGB signal provided from the monitor circuit to the CRT, the first three-phase buffer to block the input by the control of the scanner control unit during the scan operation; And a second three-phase buffer configured to provide scanning data stored in the buffer to the monitor circuit during a scanning operation.

In this embodiment, the monitor circuit transmits the data to the host using the RGB signal line associated with the host to scan data provided from the buffer.

According to the present invention as described above, the screen output is normally output in the monitor mode, the beam scanned from the electron gun of the CRT in the scan mode is reflected on the document through the scan window, which is detected by the light receiving sensor. The buffer is then provided to the bonnet circuit through the buffer, which is provided to the host (system main body) via the RGB signal line to perform a scanning operation.

EXAMPLE

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is an external view of a monitor device with a scanner function according to a preferred embodiment of the present invention, and FIG. 3 is a schematic side view of the monitor device shown in FIG.

Referring to FIG. 2, the monitor device 200 having a scanner function according to an exemplary embodiment of the present invention includes a scan window (not shown) for scanning at a lower end of the CRT 210 and a window cover 220. ) In the scan operation, the document 240 is inserted by the input of the switch 2300 provided outside the monitor device 200, and the images of the document 240 are sequentially scanned through the scan window. The switch 230 is used. You can select the normal monitor mode and the scanner mode, which means that you can only use this function if you want to use the scanner, and you can usually use it as a monitor.

Again, with reference to FIG. 3, a basic scan operation scans a beam into the scan window 214 from a ray gun 212 provided in the CRT 210. The scan window 214 uses one pixel line at the bottom of the CRT 210. This is not used in normal monitor mode. The scanned beam is reflected on the document 240 and is scanned by the light receiving sensor 260. And the movement of the document moves the document upwards (or downwards) by the motor 250 for sequential scanning. At this time, the document is moved according to a predetermined scanner synchronizing signal, and the beam of the electron gun 212 is sequentially scanned one pixel in synchronization with a predetermined scanner clock.

In this case, if there is a reflected beam, it may be recognized that there is no data in the corresponding part, and if there is no reflected beam, the data may be recognized as present. The reflected beam is sensed by the light receiving sensor 260. As such, when the scanning of one line is completed, the document is moved to perform the scanning operation of the next line.

Such a scanning operation will be described in detail with reference to FIG. 4.

4 is a circuit diagram of a monitor device having a scanner function according to a preferred embodiment of the present invention.

Referring to FIG. 4, a monitor device having a scanner function according to an embodiment of the present invention includes a monitor circuit 310, a scanner controller 320, a switching unit 330, a buffer 340, and a light receiving sensor. 260, a CRT 210 having a scan window, and a switch 230 for instructing a scan operation. The switching unit 330 receives the RGB signal from the monitor circuit 310 and provides the first three-phase buffer 332 to be provided to the electron gun 212 of the CRT 210, the light receiving sensor 260, and the buffer 340. It is composed of a second three-phase buffer 334 for providing a sensing signal input through the monitor circuit. And a motor 250 for moving the inserted sheet during the scan operation.

The operation of the monitor device with a scanner function having the above configuration is as follows.

First, in a general monitor mode, screen display information including an RGB signal provided from a host (not shown) is provided to the monitor circuit 310 and provided to the CRT 210 through a normal data processing process. At this time, a signal of a predetermined level (low level) is input to each of the three-phase buffers 332 and 334 of the switching unit 330. Therefore, the second three-phase buffer 334 is disabled and the first three-phase buffer 332 is enabled so that the RGB signal provided from the monitor circuit 310 is provided to the CRT 210.

On the other hand, when the user enters the switch 230, the monitor device is switched to the scan mode for scanning. The scanner controller 320 controls a scanning operation by outputting a signal corresponding to each unit. That is, by outputting a signal of a predetermined level (high level) to the switching unit 330 to disable the first three-phase buffer 332, the output of the RGB signal is cut off, and the second three-phase buffer 334 is enabled. Then, the motor 250 is driven to move the inserted document. Subsequent scanning operations are as described above.

Data sequentially scanned through the light receiving sensor 260 is temporarily stored in the buffer 340 and provided to the monitor circuit 310. Then, it is provided to the host through the RGB signal line connected to the host from the monitor device. The video control unit of the host stores this scanning data in the memory.

According to the real name as described above, since the monitor function is provided in the monitor, the user does not have to pay extra cost, and there is an effect that the computer system can be efficiently installed even in a small space.

Claims (4)

In the monitor device receiving the screen output data from the host to perform the corresponding data processing process to perform the screen output: A monitor circuit 310 receiving data for screen output from a host and performing data processing for screen output; A CRT 210 having a scan window 214 for scanning; A motor 250 for a scanning operation; A scan operation instruction unit 230 for instructing a scanning operation; A light receiving sensor 260 for detecting a beam scanned from the electron gun 212 of the CRT 210 when reflected by the scan window 214; A buffer 334 for temporarily storing the data scanned by the light receiving sensor 260; A switching unit that provides an RGB signal provided from the monitor circuit 310 to the CRT 210 during a normal screen output operation, and provides scanning data stored in the buffer 340 to the monitor circuit 310 during a scanning operation. 334; And a scanner control unit (320) for providing a plurality of control signals for scanning to each part in response to an input of the scan operation instruction unit (230). The method of claim 1, And the scan window (214) is configured on one lower pixel line of the CRT (210). The method of claim 1, The switching unit 334 A first three-phase buffer (332) for providing the RGB signal provided from the monitor circuit (310) to the CRT (210) and blocking its input under the control of the scanner controller (320) during a scan operation; And a second three-phase buffer (334) for providing scanning data stored in the buffer (340) to the monitor circuit (310) during a scanning operation. The method of claim 1, And the monitor circuit (310) transmits the scanning data provided from the buffer (340) to the host using an RGB signal line associated with the host.