KR20030080762A - Apparatus for Writing EDID of The Monitor - Google Patents

Abstract

PURPOSE: A display data input device for a monitor is provided to store analog and digital EDID(Extended Display Identification Data) input from the outside to a corresponding memory without any change of port by proving D-Sub and DVI ports to a monitor. CONSTITUTION: A display data input device for a monitor includes first and second memory parts(21,22), and a switching part(25). The first and second memory parts respectively store analog and digital display data. The switch part is connected to either or both of the output terminals of a D-Sub and a DVI port(23,24), to which an external data input device(10) is connected. The switch part switches the connection to the first or second memory according to the analog or digital display data input from the external data input system.

Description

Display information input device of monitor {Apparatus for Writing EDID of The Monitor}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a monitor, and more particularly, to a display information input device of a monitor, which enables to more conveniently write analog and digital display information (EDID) input through separate data input devices in a production line. .

In general, an interface between a monitor and a personal computer (PC) uses an analog interface or a digital interface.

In general, the analog interface uses a D-Sub method, and the digital interface uses a DVI (Digital Visual Interface) method.

In this case, the DVI method is a digital interface method and uses a transition minimized differential signaling (TMDS) technology as a digital interface standard defined by the DDWG (Digital Display Working Group).

Currently, monitors are generally equipped with both D-Sub and DVI ports.

Therefore, when the monitor is connected to a PC having an analog graphics card, the analog display information (hereinafter, referred to as EDID) stored in internal memory is transmitted to the PC through the D-Sub port. When connected to a PC with a digital graphics card, the digital EDID is sent through the DVI port.

At this time, since the basic display characteristics of the monitor are defined in the EDID, the PC identifies the characteristics of the monitor and outputs an image signal for more efficient display.

Each of the analog EDID and the digital EDID is input to the corresponding memory device and recorded using a separate EDID input device in the product production line.

Hereinafter, a monitor according to the prior art will be described.

As shown in FIG. 1, a monitor according to the related art stores a digital external EDID in a separate external device, that is, a monitor 2 that receives analog and digital EDID from a data input device 1 in a production process. D-Sub port 5 connected to the first memory unit 3 for storing, the second memory unit 4 for storing the digital EDID, and the data input device 1 for receiving the analog EDID. And a DVI port 6 connected to the data input device 1 for receiving the digital EDID.

The data input device 1 is a separate external device provided in the production line for recording analog and digital EDID on the monitor 2, and for connecting with the D-Sub port 5 of the monitor 2 It has a D-Sub jack (not shown) and a DVI jack (not shown) for connecting to the DVI port 6.

Referring to the monitor of the prior art configured as described above in detail, the monitor (2) is provided with both the D-Sub and DVI ports (5, 6) to record the analog EDID to the monitor (2) in the production process If so, the producer connects the data input device 1 to the D-Sub port 5. The monitor 2 stores, in the first memory unit 3, an analog EDID input from the data input device 1 via the D-Sub port 5.

Likewise, when recording a digital EDID, the data input device 1 is connected to the DVI port 6. The monitor 2 stores the digital EDID input from the data input device 1 in the second memory unit 4.

Such a monitor according to the related art records an analog EDID by connecting the D-Sub jack of the data input device 1 to the D-Sub port 5 when recording the analog EDID, and the DVI jack (when recording the digital EDID). 6) and record the digital EDID.

Therefore, there is a problem in that the EDID input jack is switched to cause the work of connecting to the corresponding port and the EDID recording time increases.

Accordingly, the present invention has been made to solve the above problems of the prior art, an object of the present invention is to provide a monitor that can simplify the EDID recording process of the monitor and shorten the recording time.

1 is a block diagram showing a display information input device of a monitor according to the prior art

2 is a block diagram illustrating a display information input device of a monitor according to the present invention;

Explanation of symbols for main parts of the drawings

10: data input device 11: selector

20: monitor 21: first memory portion

22: second memory unit 23: D-Sub port

24: DVI port 25: switching unit

In order to achieve the above object, the monitor according to the present invention includes a D-Sub and a DVI port, and through this, a monitor receiving analog and digital display information (EDID) from a separate external data input device, and receiving analog display information. A first memory unit for storing, a second memory unit for storing digital display information, and an analog or digital input from the external data input device connected to an output terminal of the D-Sub or DVI port to which the external data input device is connected It is configured to include a switching unit for switching so that the first or second memory unit is connected according to the display information.

Hereinafter, a monitor according to the present invention will be described with reference to the accompanying drawings.

2 is a block diagram illustrating a monitor according to the present invention.

As shown, the monitor according to the present invention is provided with a D-Sub and DVI ports (23, 24) through which the monitor receives analog and digital display information (EDID) from a separate external data input device (10) 20), the D-Sub connected to the first memory unit 21 for storing analog display information, the second memory unit 22 for storing digital display information, and the external data input device 10; A switching unit connected to an output terminal of the DVI ports 23 and 24 so that the first or second memory units 21 and 22 are connected according to the analog or digital display information input from the external data input device 10. It is comprised including 25.

At this time, the external data input device 10 is a data input device provided separately in the production process line for recording the analog and digital EDID to the monitor 20, and when the producer inputs an analog or digital EDID write command, It is preferable to comprise the selection part 11 which generate | occur | produces.

In addition, the switching unit 25 may be configured to be connected to either one of the D-Sub or DVI ports 23 and 24 or to both ports.

In this embodiment, according to the analog or digital EDID write command of the selector 11, it is designed to output a predetermined voltage as shown in Table 1 below, and the switching unit 25 is connected to the output terminal of the D-Sub port 23. Connect it.

OUTPUT Analog EDID Record Command 5 V Digital EDID Record Command 0 V

Referring to the operation of the monitor according to the present invention configured as described above in detail.

First, the producer connects the data input device 10 to the D-Sub port 23 to which the switching unit 25 is connected.

When the producer inputs an analog EDID recording command through the selector 11, the data input device 10 does not use the 5V signal output from the selector 11 through the D-Sub port 23. It is transmitted to the switching unit 25 through a separate pin, for example, pin 4 (Pin 4).

When the 5V signal is applied, the switching unit 25 switches the data SDA and clock SCL lines of the D-Sub port 23 to be connected to the first memory unit 21.

At this time, the switching unit 25 is composed of two switching elements connected to the data line and the clock line of the D-Sub and DVI ports 23 and 24, respectively, and the D-Sub and DVI ports 23 and 24 and The connection between the first and second memory units 21 and 22 is switched.

Since the data SDA and clock SCL lines of the D-Sub port 23 are connected to the first memory unit 21 due to the switching operation of the switching unit 25, the data input device 10 is connected to the first memory unit 21. The input analog EDID is stored in the first memory unit 21.

On the other hand, when the producer inputs the digital EDID write command, the 0V signal is transmitted to the switching unit 25 through pin 4 of the D-Sub port 23. The switching unit 25 receives a 0V signal and switches the data SDA and clock SCL lines of the D-Sub 23 to be connected to the second memory unit 22.

Since the data and clock lines of the D-Sub port 23 are connected to the second memory unit 22, the digital EDID input from the data input device 10 is stored in the second memory unit 22.

Therefore, the present invention corresponds to the analog and digital EDID input from the data input device 10 through the switching operation of the switching unit 25 through any one of the D-Sub or DVI ports 23 and 24. The first and second memory units 22 may be stored in the memory unit 22.

In addition, when the switching unit 25 is connected to an output terminal of the DVI port 24 or to an output terminal of each of the D-Sub and DVI ports 23 and 24, the port is changed as described in the above embodiment. Analog and digital EDID recording is possible through a single port.

The monitor according to the present invention described above, by using only one of the D-Sub or DVI port provided in the monitor to store the analog and digital EDID input from the outside without changing the port in the corresponding memory EDID recording time of the monitor This can shorten the cost and improve the production efficiency.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit of the present invention.

Therefore, the technical scope of the present invention should not be limited to the contents described in the embodiments, but should be defined by the claims.

Claims (2)

In the monitor having a D-Sub and DVI port and receives analog and digital display information (EDID) from a separate external data input device, A first memory unit for storing analog display information, A second memory unit for storing digital display information, And a switching unit connected to an output terminal of the D-Sub or DVI port to switch the first or second memory unit to be connected according to the analog or digital display information input from the external data input device. Display information input device. The method of claim 1, The switching unit If the information input from the external data input device is analog display information, the data (SDA) and clock (SCL) lines of the D-Sub port are switched to be connected to the first memory unit. And display data and clock lines to be connected to the second memory unit.