KR100482815B1 - A system and method for operating lcd module - Google Patents

Abstract

The present invention relates to a drive system and method of an LCD module. The present invention provides a module driver having a microcomputer and an LCD module driving system comprising an LCD module, wherein the LCD module provides a memory connection for storing basic information about the LCD module and a communication connection with a microcomputer of the module driver. An interface unit, the microcomputer of the module driving unit receives basic information stored in the memory unit, and upon successful communication connection with the LCD module unit via the interface unit, basic information of the LCD module unit is transferred from the memory unit. Received and drives the LCD module unit according to the received basic information.

Description

A system and method for driving an LCD module {A SYSTEM AND METHOD FOR OPERATING LCD MODULE}

The present invention relates to a driving system and method of an LCD module, and in particular, when developing an LCD monitor, basic information about each LCD module unit is separately added to a memory unit of the LCD module unit without a separate method for various LCD module units for each company. The present invention relates to a driving system and a method of driving an LCD module to automatically drive the LCD module unit under the control of the microcomputer according to the basic information of the LCD module unit by directly storing and transmitting it to the microcomputer module unit at the request of the microcomputer.

In general, in developing LCD monitors, LCD monitors are often developed for various models supplied by many companies for productivity of LCD modules.

In case of developing multiple LCD modules at the same time, there is no problem if the specifications of these modules are all the same, but if there are differences in some of the specifications of the LCD module, due to this difference, the firmware of the microcomputer that drives the LCD module Must be changed.

Therefore, in the related art, these changes due to the difference between the LCD modules had to be provided with a separate discrimination method on the PCB or a separate discrimination method in firmware.

Hereinafter, a description will be given of a method of distinguishing different LCD modules for each company used in the related art.

First, as shown in FIG. 1, the conventional module driver 100 for driving the LCD module unit 110 controls the microcomputer 140 to control image signal processing according to basic information of each LCD module unit 110. And an image processor 120 for processing an image signal under the control of the microcomputer 140, a transmitter 130 for transmitting the signal processed from the image processor 120 to the LCD module 110, and EPIROM (150) for storing the basic information of the LCD module 110, and a power supply unit 160 for providing a predetermined power to the microcomputer 140, the transmission unit 130 and Y pyrom 150 and In addition, the power supply unit 160 is provided with a predetermined voltage is configured to the module power switching unit 170 for switching the power of the LCD module unit 110.

When driving the LCD module unit 110 through the module driving unit 100 as described above, there are two methods that can be used in the conventional classification method for each module.

First, a method of distinguishing an LCD module for each company according to FIG. 1 is to distinguish using a resistor circuit, and uses a signal input to an input port of the microcomputer 140.

For example, assuming P1 as Bit 0, P2 as Bit 1, P3 as Bit 2, 0: LG, 1: Samsung, 2: Hidis, 3: AU, for LG, R12, When R22 and R32 are connected, the inputs of P1, P2, and P3 are all 0V, and the value of input state is 000. In the case of Samsung, when R11, R22, and R32 are connected, the P1 input is 5V, the P2 and P3 inputs are 0V, and the input state is 001. In the case of Heidis, when R12, R21, and R32 are connected, the input state of the P2 input is 5V, P1, and P3 is 010. In the case of AU, when R12, R21, and R31 are connected, the P1 and P2 inputs are 5V, the P3 input is 0V, and the input state is 011.

In this way, by accepting the status value of the input port as 0 or 1, it is possible to input from 0 to 7 by the combination of P1, P2, and P3 values. In other words, this method is to set the value according to the type of module and then connect the resistance of each port.

Accordingly, the microcomputer 140 may drive each LCD module by distinguishing LCD modules of up to seven companies according to signals input to an input port.

However, this differentiation method required a separate resistor circuit, and as the number of different manufacturers increased, it was cumbersome to change the resistor circuit accordingly.

Meanwhile, the method of distinguishing the LCD module unit 210 according to FIG. 2 is a method of allocating one byte to a specific area of the YPROM250, which is a memory unit of the microcomputer 240, and selecting a module according to the value.

For example, the specific area values are pre-determined by module type, such as 0: LG, 1: Samsung, 2: Heidis, 3: AU, and classified accordingly. This method does not need to be changed in circuit like the method of FIG. 1, but after assembling for each module in the production process, it must go through a cumbersome process of storing basic information for each module in a specific part of YPIROM.

Conventional methods as described above, even if the LCD module provided by a number of companies developed in a multi-tasking method, the information of the LCD module actually used had to be distinguished from the outside by using a value embedded in a separate resistor circuit or YPIROM. Therefore, it was inconvenient to manage separately for each module in production and to change only the same module as the defective set in service.

The present invention is to solve the problems as described above, after the development of the LCD monitor module for each module after storing the information for each module separately in the memory of the LCD module unit without a separate method for different LCD module unit for each company It is an object of the present invention to provide an LCD system driving system and method for automatically driving an LCD module unit according to the basic information of each LCD module unit by controlling the microcomputer by directly transmitting to the microcomputer.

In order to achieve the above object, a driving system of an LCD module includes a module driving unit having a microcomputer and an LCD module driving system including an LCD module unit, wherein the LCD module unit includes a memory unit storing basic information about the LCD module unit; And an interface unit for communicating with a microcomputer of the module driving unit, and the microcomputer of the module driving unit receives basic information stored in the memory unit, and successfully communicates with the LCD module unit via the interface unit. And receiving basic information of the LCD module unit from the memory unit, and driving the LCD module unit according to the received basic information.

In the LCD module driving method for achieving the above object is a method for driving the LCD module unit in the LCD module driving system consisting of a module driving unit and the LCD module unit, the microcomputer of the module driving unit in communication with the LCD module unit, And reading the basic information stored in the memory unit of the LCD module unit, and driving the LCD module unit according to the read basic information.

Hereinafter, the configuration and operation of the driving system and driving method of the LCD module according to the present invention will be described in detail with reference to the accompanying drawings.

First, as shown in FIG. 3, the module driver 310 for driving the LCD module unit 310 according to the present invention requests basic information from the LCD module unit 300 and the LCD module unit 310. The microcomputer 340 for controlling the image signal processing according to the basic information received by the image processing unit, an image processor 320 for processing the image signal under the control of the microcomputer 340, and the image signal processed from the image processor 320 Transmitter 330 for transmitting a signal to the LCD module 310, an internal memory unit 150 for storing the basic information of the LCD module 310, the microcomputer 340 and the transmitter 330 The power supply unit 360 to provide a predetermined power to the power supply module 360, and the module power switching unit 370 for switching the power of the LCD module 310 receives a predetermined voltage.

In addition, the LCD module 310 is composed of a memory unit 390 for storing the basic information about the LCD module, and the interface unit 380 for transmitting the basic information in response to the request of the microcomputer 340.

Here, the basic information about the LCD module unit 310 preferably includes at least timing information of the driving clock signal and the data signal of the LCD module 310.

On the other hand, as shown in Figure 4, the driving method of the LCD module according to the present invention is a method for driving the LCD module 310 in the LCD module driving system consisting of a module driver 300 and the LCD module 310. The microcomputer 340 of the module driver 300 communicates with the LCD module 310 to read basic information stored in the memory unit 390 of the LCD module 310, and The module driver 300 drives the LCD module 310 according to the read basic information.

In addition, as a result of the communication attempt, when the module driver 300 cannot read basic information from the LCD module 310, the LCD module information preset in the internal memory unit 350 of the microcomputer 340. In accordance with the present invention, the method may further include driving the LCD module 310.

3 and 4, the operation and signal processing process of the present invention having the configuration as described above will be described in detail.

In developing the LCD monitor, various LCD modules supplied from a plurality of companies should be driven according to their basic information. According to the present invention, as described above, the microcomputer of the module driving unit 300 is automatically operated without a separate method. The microcomputer 340 receives the module basic information from the LCD module 310 at the request of 310, and drives the LCD module 310 according to the basic information.

To this end, first, as shown in FIG. 3, basic information including timing information such as a driving clock signal and a data signal is stored in the memory unit 390 of the LCD module 310 in advance. In this case, the manufacturer information of the LCD module 310 may be additionally stored.

In this state, the microcomputer 340 of the module driver 300 attempts to communicate with the LCD module 310 to obtain basic module information necessary for driving the LCD module 310 (400). To this end, the LCD module unit 310 includes an interface unit 380 that can communicate with a separate communication line in addition to the existing image signal output line, power line, and ground line between the module driver 300 and the LCD module 310. Is required inside).

The interface unit 380 of the LCD module 310 checks the communication request signal according to the communication request signal of the microcomputer 340.

When the communication connection between the microcomputer 340 and the LCD module unit 310 is successful via the interface unit 380, the LCD module unit 310 stores various driving clocks and data stored in the memory unit 390. Basic information including timing information and manufacturer information of a signal is read from the memory unit 390 and then transmitted to the microcomputer 340 through the interface unit 380.

On the other hand, the microcomputer 340 checks whether or not the communication connection with the LCD module 310 is successful (410), and if the communication connection is confirmed successful, the basic information received from the LCD module 310 The receiver 420 reads timing information and manufacturer information of the driving clock signal and the data signal of the LCD module 310 (430).

The microcomputer 340 reading the basic information received from the LCD module 310 controls the image processor 320 and the transmitter 330 of the module driver 300 according to the read information, thereby controlling the LCD module unit. The LCD module 310 is driven in accordance with the operating characteristic of the 310 (450).

Meanwhile, when the LCD module 310 does not store basic information related to the LCD module 310 in the memory 390, the LCD module 310 cannot respond to the basic information request of the microcomputer 340.

That is, when there is no response signal from the interface unit 380 of the LCD module 310 despite the basic information request of the microcomputer 340, the microcomputer 340 checks this and then the internal memory unit 350. After reading the module information stored in advance in the set to the basic information of the LCD module 310 to be driven currently (440).

The microcomputer 340 sets the module information stored in the internal memory unit 350 as basic information of the LCD module 310, and then the image processor 320 of the module driver 300 according to the basic information. And driving the LCD module 310 by controlling the power supply 360 (450).

As described above, according to the present invention, the microcomputer 340 automatically receives the module basic information from the LCD module 310 and drives the LCD module 310 under the control of the microcomputer 340 according to the basic information. Even when assembling various LCD modules from many companies in the process of developing LCD monitors, there is no need for a separate cumbersome setting process to distinguish each LCD module.

In addition, the after-sales service of the LCD module, even if it is replaced with a module of another company and another company has the advantage that can be compatible with the LCD module without any problem.

1 is a block diagram showing the configuration of a drive system of an LCD module according to the prior art.

Figure 2 is a block diagram showing another drive system of the LCD module according to the prior art.

Figure 3 is a block diagram showing the configuration of a drive system of the LCD module according to the present invention.

4 is a flowchart illustrating a method of driving an LCD module according to the present invention.

<Description of the symbols for the main parts of the drawings>

300: module driving unit 310: LCD module unit

320: image processing unit 330: transmission unit

340: microcomputer 350: internal memory

360: power supply unit 370: module power switch unit

380: interface unit 390: memory unit

Claims (5)

In the LCD module driving system comprising a module driver having a microcomputer and an LCD module, The LCD module unit, A memory unit storing basic information about the LCD module unit, and an interface unit for communicating with a microcomputer of the module driving unit; The microcomputer of the module driving unit receives basic information stored in the memory unit, and upon successful communication connection with the LCD module unit via the interface unit, receives basic information of the LCD module unit from the memory unit. And the LCD module driving unit according to the basic information. The LCD module driving system of claim 1, wherein the microcomputer drives the LCD module unit according to the LCD module information pre-stored in the internal memory unit of the microcomputer if the communication connection with the LCD module unit fails. The driving system of claim 1, wherein the basic information about the LCD module unit includes at least timing information of a driving clock signal and a data signal of the LCD module unit. A method of driving an LCD module unit in an LCD module driving system comprising a module driver and an LCD module unit, The microcomputer of the module driving unit communicates with the LCD module unit to read basic information stored in the memory unit of the LCD module unit; And driving the LCD module unit in accordance with the basic information read out by the module driver. The method of claim 4, wherein if the module driver cannot read basic information from the LCD module as a result of the communication attempt, driving the LCD module according to the LCD module information preset in the internal memory of the microcomputer. LCD module driving method characterized in that it further comprises.