TWI412816B - Liquid crystal display apparatus and method for controlling the same - Google Patents

Abstract

A liquid crystal display (LCD) apparatus with a memory is provided. In said memory, a program code and a backup program code are stored therein. While detecting the content of the program code abnormal, the LCD display apparatus may keep on operating by employing the backup program code instead of the program code. For example, the LCD display apparatus may provide a user at least the showing of frames so that the user can debug or update the program code through a human-machine communication interface.

Description

Liquid crystal display device and method for controlling operation of the liquid crystal display device

The present invention relates to a display device, and more particularly to a liquid crystal display device, which can execute an alternate program code to drive the liquid crystal display device to continue to operate when detecting that the code content for driving the liquid crystal display device is abnormal. .

Because liquid crystal displays have the advantages of thinness, light weight, low power consumption, no radiation pollution, and compatibility with semiconductor process technology, various electronic products that require displays as human-machine interfaces are gradually adopting liquid crystal displays, such as computer screens. , LCD TV, mobile phone, digital camera and personal digital assistant.

LCD monitors require a firmware driver to operate. These firmware are stored in memory in code. However, the code stored in the memory may be changed for some reason. For example, the content of the code may be changed under the influence of lightning strikes or other electrical devices. At this time, the display screen of the liquid crystal display may not be displayed. If the display screen cannot display the screen, even if the changed code can drive the operation of the LCD display part, the user will not be able to operate the part or try to repair it after losing the human-machine communication interface. The operation of the liquid crystal display.

Therefore, there is a need for a device or method that allows the liquid crystal display device to continue to operate when the content of the code for driving the liquid crystal display device is detected to be abnormal, without the conventional method of returning the liquid crystal display device to the original factory for repair. .

The object of the present invention is to provide a liquid crystal display device, which can execute another piece of code to drive the liquid crystal when detecting that the code in the code contains abnormal content. The display device can continue to operate.

The object of the present invention is to provide a method for controlling the operation of a liquid crystal display device. When the liquid crystal display device detects that the code therein contains abnormal content, another piece of code can be executed to drive the liquid crystal display device to continue to operate.

The invention provides a liquid crystal display device comprising a liquid crystal display screen, a memory and a controller. The liquid crystal display screen is used for displaying a picture, the memory is used for storing a code and an alternate code, and the controller is used for detecting the content of the code and controlling the operation of the liquid crystal display device (including the liquid crystal display screen), wherein the code is used for Driving the liquid crystal display device to provide operation of all the liquid crystal display screens of the user, and the spare code is used to drive the liquid crystal display device to provide only the operation and input and output of the on-screen display (OSD) function of the user ( Input/output, referred to as I/O) device driver. When the controller detects that the code content is normal, the controller controls the operation of the liquid crystal display device according to the code, and provides operations supported by all of the user's liquid crystal display screens. In addition, when the controller detects that the code content is abnormal, the controller controls the operation of the liquid crystal display device according to the standby code, which only provides the operation of the user screen adjustment function and the driving of the input/output device.

The invention provides a method for controlling the operation of a liquid crystal display device. The liquid crystal display device comprises a liquid crystal display screen and a memory. The liquid crystal display screen is used for displaying a picture, and the memory is used for storing a code and an alternate code. The method for controlling the operation of the liquid crystal display device comprises the following steps: First, detecting whether the code content is normal. Then, if the content of the code is detected to be normal, the operation of the liquid crystal display device is controlled according to the code, and the operation of all the liquid crystal display screens supported by the user is provided. On the other hand, if the content of the code is detected to be abnormal, the operation of the liquid crystal display device is controlled according to the alternate code, which only provides operation and input of the user screen adjustment function. Drive into the output device.

Since the liquid crystal display device stores an alternate code in the memory in addition to storing a code, when the detected code contains abnormal content, the liquid crystal display device can execute the backup code so that the liquid crystal display device can Continue to operate, but only provide the operation of the user's screen adjustment function and the input and output device, so that the user can debug the interface or update the code. Of course, the alternate code is better to completely copy the code, just as the car needs a spare tire for the occasional need.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

1 is a block diagram of a liquid crystal display device, such as a liquid crystal display or a liquid crystal television of a computer, according to an embodiment of the invention. Referring to FIG. 1, the liquid crystal display device 10 includes a liquid crystal display screen 11, a controller 12, and a memory 13. The liquid crystal display screen 11 is used for displaying a picture, so it can be used as an interface for human-machine communication. The memory 13 may be one or more physical memories, and the memory type is, for example, a readable and writable flash memory. The memory 13 is used to store the code and the backup code. The code and the alternate code can be stored in the same physical memory or different physical memory, and even the code (or alternate code) can be separated to have different physical memory. The controller 13 can drive the liquid crystal display device 10 according to the code stored in the memory 13 or the alternate code, including controlling the screen display of the liquid crystal display screen 11.

The alternate code may be identical to the code, or part of the code, only to provide display of the user's picture, or even to add check code, debug code and re-encoded code is not exactly the same code. When the code Because the controller 12 detects that the content of the code is abnormal, the controller 12 changes to drive the liquid crystal display device 10 according to the backup code, and at least enables the liquid crystal display screen 11 to display the screen. The human machine communication interface can be used for subsequent actions, such as debugging or updating the code. Therefore, the alternate code generally only retains the necessary on-screen adjustment (OSD) function driver code, and even retains the input/output (I/O) device driver code.

2 is a flow chart of a method for controlling the operation of a liquid crystal display device according to an embodiment of the invention. The liquid crystal display device is shown in FIG. 1 , for example, a liquid crystal display or a liquid crystal television of a computer. Referring to FIG. 1 and FIG. 2 simultaneously, first, in step S21, the controller 12 detects the contents of the code, for example, using the parity check. Next, in step S22, if it is determined that the code content is normal, then in step S23, the controller 12 controls the operation of the liquid crystal display device 10 according to the normal code of the content. At this time, the program code can drive the liquid crystal display screen 11 to provide all. Supported operations such as adjusting chroma, saturation, etc. On the other hand, if the content of the code is detected to be abnormal in step S22, the controller 12 changes to control the operation of the liquid crystal display device 10 according to the backup code, and the standby code can drive the liquid crystal display screen at the minimum. 11 provides a display of the user's screen, and the user at least the human-machine communication interface can perform subsequent actions such as debugging or updating the code.

In summary, the liquid crystal display device stores an alternate code in the memory in addition to storing a code, so that when the detected code contains abnormal content, the liquid crystal display device can execute the backup code. The liquid crystal display device can continue to operate, but only provides the operation of the user's screen adjustment function and the input and output device, so that the user can debug the interface or update the code. Of course, the alternate code is preferably completely copied from the code, just like Cars that are walking outside need to carry a spare tire so that the spare tire can be replaced with a broken tire when needed so that the car can continue to walk.

While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

10‧‧‧LCD devices

11‧‧‧LCD screen

12‧‧‧ Controller

13‧‧‧ memory

S21‧‧‧Detecting code content

S22‧‧‧ Is the code content normal?

S23‧‧‧Control liquid crystal display device according to code

S24‧‧‧Control liquid crystal display device according to alternate code

FIG. 1 is a block diagram of a liquid crystal display device according to an embodiment of the invention.

FIG. 2 is a flow chart of a method for controlling operation of a liquid crystal display device according to an embodiment of the invention.

S21‧‧‧Detecting code content

S22‧‧‧ Is the code content normal?

S23‧‧‧Control liquid crystal display device according to code

S24‧‧‧Control liquid crystal display device according to alternate code

Claims (6)

A liquid crystal display device includes: a liquid crystal display screen for displaying a picture; a memory for storing a code and an alternate code, wherein the code is used to drive the liquid crystal display device to provide the user with the The operation of the LCD screen is supported, and the backup code is used to drive the liquid crystal display device to provide only the operation of the user screen adjustment function and the driving of the input/output device; and a controller for detecting whether the code content is normal or not. If the content of the code is normal, the operation of the liquid crystal display device is controlled according to the code. If the content of the code is not normal, the operation of the liquid crystal display device is controlled according to the backup code. The liquid crystal display device of claim 1, wherein the liquid crystal display device comprises a liquid crystal display or a liquid crystal television. The liquid crystal display device of claim 1, wherein the controller detects whether the code content is normal according to a check code, wherein the check code is generated according to the code. A method for controlling the operation of a liquid crystal display device, wherein the liquid crystal display device comprises a liquid crystal display screen and a memory, the liquid crystal display screen is used for displaying a picture, and the memory is used for storing a code and an alternate code. The method for controlling the operation of the liquid crystal display device comprises: detecting whether the content of the code is normal; if the content of the code is normal, controlling the liquid crystal display device according to the code Operating to provide the user with all operations supported by the LCD screen; and if the content of the code is not normal, controlling the liquid crystal display device according to the alternate code to provide only the operation of the user screen adjustment function and the input and output device drive. The method for controlling the operation of a liquid crystal display device as described in claim 4, wherein the liquid crystal display device comprises a liquid crystal display or a liquid crystal television. The method for controlling the operation of a liquid crystal display device as described in claim 4, wherein detecting whether the content of the code is normal is a check code generated according to the code.