KR20020076987A - Display apparatus and system with the same - Google Patents

Abstract

PURPOSE: A display device and a system are provided to display image data after a power source of a system main body is turned off. CONSTITUTION: A system main body includes a CPU, at least one memory, at least one input device, and a video creating unit(13) for processing image data to be displayed. When the system main body is operated, a display device(20) displays the image data received from the video creating unit(13). An independent power source device receives a power source from an external device independent of the system main body. The first memory(34) stores a predetermined image received from the video creating unit(13). If the system main body is terminated, a control unit(35) creates a control signal for displaying a predetermined image repeatedly. A display panel(40) displays the image stored in the first memory(34) repeatedly in accordance with the control signal.

Description

DISPLAY APPARATUS AND SYSTEM WITH THE SAME}

The present invention relates to a display device and a system having the same, and more particularly, to a display device that displays a predetermined image received from the system independently of the system after the system stops operating, and a system having the same. It is about.

In the case of a system having a display device such as a current personal computer, when the power of the system main body is turned off, the display device, that is, the monitor attached thereto, is turned off without performing any display function. In other words, the current function of the monitor is limited to use only for sequentially displaying computer-generated video images.

However, in the case of LCD monitors, which are widely used nowadays, they occupy a function as a picture frame because they are small in volume and beautiful in appearance. Accordingly, there is a need for a display device capable of displaying a predetermined image even after the main body is turned off and a system having the same through a display device that is powered independently of the system main body.

SUMMARY OF THE INVENTION An object of the present invention is to provide a display device capable of displaying image data to be displayed by a user even after the power of a system main body such as a personal computer is turned off.

It is still another object of the present invention to provide a display system having a display device capable of displaying an image that a user wants to display even after the system main body is turned off.

That is, after the system main body transfers an image to be displayed from the main body to the memory in the display device, and then the main body power is turned off, the display device continuously displays the image independently transferred to the memory and the same. It is to provide a system provided.

The object is a system body having a central processing unit, at least one memory, at least one input device and a video generating means for generating image data to be displayed and received from the video generating means when the system body is in operation. A display apparatus for displaying image data, comprising: an independent power supply unit that is independent of the system main body from an external power source, and a first memory and a system main body that store a predetermined image received from a video generating means have ended And a control panel for generating a control signal for repeatedly displaying a predetermined image and a display panel for repeatedly displaying a predetermined image stored in the first memory according to the control signal. The display device can be achieved by a display device, which can be displayed in a lip form.

Still another object is to provide a system body having a central processing unit and at least one memory, at least one input device and video generating means for processing image data to be displayed and

(a) an independent power supply unit that is independently powered from the system main body from an external power source, (b) a first memory for storing a predetermined image transmitted to the system main body, and (c) the system main body is powered off; By a display device having a control unit for generating a control signal for repeatedly displaying a predetermined image and (d) a display panel for repeatedly displaying the predetermined image stored in the first memory according to the control signal. Is achievable.

The object of the invention is a system having a central processing unit and at least one memory, at least one input device and a means for generating image data for display and a display device for outputting image data generated from said system body. In the normal operation of the system main body, a first operation mode for sequentially displaying image data received from the system main body and predetermined image data received from the system main body after the system main body is turned off. It is also achievable by a system characterized in that the display device has a second mode of operation for displaying repeatedly.

Advantages, features and preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram of a system provided with a display device according to the present invention.

2 is an internal block diagram of a display device according to the present invention;

3 is a block diagram showing the manner in which the display device according to the present invention displays image data.

4 is a flowchart of a process of displaying an image by a display device according to the present invention;

5 is an internal block diagram of a first modification of the display device according to the present invention;

6 is an internal block diagram of a second modification of the display device according to the present invention;

*** Explanation of symbols on the main parts of the drawing ***

10: system body 11: the keyboard

12: mouse 13: video generation means

14 memory 15 image data generating means

16: graphic transmission unit

20: display device 30: display circuit

31: analog-to-digital converter 32: image scaler

33: frame rate converter 34: first memory

35 control unit 36 digital-to-analog conversion unit

37: interface unit 38: second memory

39: auxiliary power supply 40: display panel

1 is a block diagram of a system provided with a display device according to the present invention. Referring to FIG. 1, the configuration of the system according to the present invention includes a memory 14 for storing predetermined input means such as a keyboard 11 and a mouse 12, an operating system or other information, and a video signal. A display for displaying a signal transmitted from the system main body 10 and the video generating means 13 having a video generating means 13 for generating and transmitting a signal, and displaying a predetermined image when the system main body 10 is turned off. Device 20.

The system main body 10 according to the invention is provided with video generating means 13 for processing a video signal for display to a user. In addition, an image to be displayed when the system main body 10 is turned off (hereinafter referred to as 'image data') is set by a user's selection, and the display apparatus 20 is provided through the video generating means 13 at the time of turning off the power. To send). A personal computer or the like may be used as the system according to the present invention. In this case, the system main body 10 means a computer main unit other than a display device.

The video generating means 13 according to the present invention is provided in the system main body 10, and the video signal according to the result of the data processing by the system main body 10, that is, the video signal according to the operation of the normal system main body 10. (Hereinafter referred to as a video signal) and image data are transmitted to the display apparatus 20. The video generating means 13 also has a separate memory. The video generating means 13 is generally an expansion board that can be plugged into a desktop computer, and serves to convert the computer-generated image into the electronic signal required by the monitor. Aka video adapter, graphics adapter, graphics board, graphics card, graphics controller, video display adapter, video display board, video display card, video display controller, video card, video board, video controller, display adapter, display board, display card, It is referred to as a display controller, a VGA adapter, a VGA card, a VGA controller, and the like.

The display apparatus 20 according to the present invention displays a video signal transmitted from the video generating means 13 and displays image data when the system main body 10 is turned off. As the display device, a general monitor, an LCD monitor, or the like may be used.

The image data is transmitted from the video generating means 13 immediately before the system main body 10 is turned off, and is stored in a predetermined memory provided in the display apparatus 20. When the system main body 10 is operated, video signals are displayed via the memory as temporary storage means, so that image data cannot be stored. Therefore, the moment the power of the system main body 10 is turned off, the image data is received, stored in the memory and displayed. Preferably, the image data includes an identifier, and the display device 20 can distinguish it from a normal video signal through the identifier.

In addition, although the power of the system main body 10 is not turned off, the image data may be displayed even when the system main body 10 is not used for a long time and enters a power saving mode. In this case, the display apparatus 20 receives control signals and image data related to horizontal synchronization or vertical synchronization from the system main body 10 and then, upon entering the power saving mode, displays the image data received by the controller provided in the display apparatus. It is displayed repeatedly.

2 is an internal block diagram of a display device according to the present invention. As shown in FIG. 2, in the display apparatus according to the present invention, the video signal and image data transmitted from the video generating means 13 are passed through the display panel 40 through the display circuit unit 30 of the display apparatus 20. Is displayed. The display circuit unit 30 includes an analog-digital converter 31, an image scaler 32, a frame rate converter 33, a digital-analog converter 34, an interface 37, and a first memory 34. ) And the control unit 35.

Hereinafter, the operation of the system configuration of FIG. 2 will be described. The video signal is continuously transmitted from the video generating means 13 when the system main body 10 is operating normally, that is, when the power is turned on, and the image data is received immediately before the system main body 10 is turned off. 13) to receive.

The video signal and the image data are converted into digital signals by an analog-digital converter 31 of the display circuit 30. The video signal converted into a digital signal is input to an image scaler 32. The image scaler 32 converts the video signal to an image size according to the display mode. There are various types of display modes of the display apparatus 20 (VGA, XGA, SVGA, SXGA, UXGA, etc.), and the image scaler converts the input video signal to each display mode appropriately.

The video signal passed through the image scaler 32 is input to the frame rate converter 33. The frame rate converter 33 adjusts the frame rate of the video signal transmitted from the video generating means 13 and adjusts the frequency. Depending on the type of display device, the positions of the image scaler 32 and the frame rate converter 33 may be interchanged.

In this case, in order to convert the image scaler or the frame rate, it is necessary to temporarily store the video signal or the image data received from the system main body. For such temporary storage, a typical display device has a first memory.

When the system main body 10 normally operates, the video signal stored in the first memory 34 is converted into an analog signal by a digital-to-analog converter 36. The video signal converted into an analog signal is input to the display panel 40 through the interface unit 37 and displayed.

When the system main body 10 is turned off, the image data transmitted immediately before the power is turned off are stored in the first memory 34. The image data is converted into an analog signal by the digital-to-analog converter 36 and repeatedly displayed on the display panel 40 via the interface 37.

The control unit 35 (Monitor Control Unit, Micom) operates the image scaler 32 and the frame rate converter 33, stores and loads video signals and image data to the first memory 34, and stops the operation of the system main body. After generating the control signal iteratively generates a control signal for displaying the image data.

The display circuit unit 30 of the present invention includes an analog-to-digital converter 31, an image scaler 32, a frame rate converter 33, a digital-to-analog converter 34, an interface 37, and a first. Although described as being composed of a memory 34 and a second memory 35, not all of these components are necessary for the practice of the present invention. That is, when the video generating means 13 outputs a digital signal, the analog-to-digital converter 31 is not necessary. When the video size change and the frame rate are not necessary, the image scaler 32 and The frame rate converter 33 becomes unnecessary. In addition, the interface unit 37 is for smooth data transmission with the display panel 40 and may be omitted. In addition, the digital-to-analog converter 34 may also be omitted when the analog method is adopted or when the display panel 40 can be driven by an analog signal.

3 is a block diagram illustrating a method of displaying image data by the display apparatus according to the present invention.

The system main body 10 includes an image data generating means 15, a memory 14, and a graphic transmitting unit 16. The memory 14 included in the system main body may be provided in the normal system main body 10 or may be provided separately.

The image data generating means 15 generates image data to be displayed by the user after the function of the system main body is stopped. This is typically accomplished by selecting a desired image and assigning an identifier to the selected image. The image data thus generated is stored in the memory 14. The image data stored in the memory 14 is transmitted by the graphic transmitting unit 16 to the display device through the video generating means 13. The graphic transmitter 16 functions to transmit the image data stored in the memory to the display apparatus after detecting the shutdown of the system and transmitting all the video signals to be displayed in the normal operation to the display apparatus. For example, a system using MS Windows as an operating system, the image data stored in the memory is transferred to a display device after transmitting the video signal "The system has been shut down normally. You may turn off the system." 20) to send. That is, after the operating system is terminated and the corresponding image data is transmitted to the display apparatus 20 for display, the system main body 10 is turned off. In this case, since the transmitted image data is stored in the first memory 34 of the display device, the image data can be continuously displayed even after the system main body is turned off.

The image data transmitted in this manner is transmitted to the display device 20 and input to the display circuit unit 30. The control unit 35 of the display circuit unit 30 determines whether or not the identifier is added data by an ID detector. If an identifier is added, the identifier is stored in the first memory 34 and used to display when the system main body 10 is turned off. Otherwise, the input video signal is displayed after being processed. A selector selects whether to display a typical video signal or image data.

4 is a flowchart of a process of displaying an image by the display device according to the present invention. Referring to FIG. 4, the present invention has the following flow.

When the system main body 10 is powered on, a video signal is transmitted, and when the work is completed, image data is transmitted immediately before the power is turned off (step 100).

The display apparatus 20 stores the transmitted image data in the first memory 34 (step 110). When the system main body 10 operates normally, the video signal is stored in the first memory 34, but the operation is performed. The image data is saved at the time of shutdown and power off.

It is determined whether the power of the system main body 10 is turned off (step 120).

If it is determined in step 120 that the system main body 10 is powered on, a normal display is performed (step 130). That is, a video signal is received and displayed.

When it is determined in step 120 that the power of the system main body 10 is turned off, image data is displayed (step 140). The image data is transmitted immediately before the system main body 10 is turned off, and the first memory 34 is received. ).

It is determined whether the power of the display apparatus 20 is turned off (step 150).

When the display device 20 is turned off in step 150, the display stops, and when the power is turned on, image data is continuously displayed.

5 is an internal block diagram of a first modification of the display device according to the present invention. As shown in FIG. 5, the first modification of the display device according to the present invention further includes a second memory 38 in the display device according to the present invention.

When only the first memory 34 is used as shown in FIG. 2, only data of one frame of the video signal and the image data may be stored. In this case, since the video signal continuously receives the change of the display screen according to the operation of the system main body 10, there is no problem, but in the case of the image data, the video signal is transmitted in advance without the system main body 10 operating. The video cannot be displayed because it must be saved and displayed. In addition, since the video signal and the image data cannot be stored in the first memory 34 at the same time, the image data must be transmitted and stored immediately before the system main body 10 is turned off, that is, at the time when the transmission of the video signal is terminated.

However, when the second memory 38 is provided, a plurality of frames of data may be stored, and thus a moving picture may be used as image data. In addition, image data may be transmitted in advance and stored while a video signal is being transmitted. When the second memory 38 is used, the image data transmitted from the system main body does not necessarily need to be transmitted in accordance with the system termination time. That is, the image data to which the identifier is applied may be transmitted during system operation, and the display apparatus may store the image data to which the received identifier is applied to the second memory. Image data may be transmitted between clocks through which video signals are transmitted or by using a precharge time. In this case, the video signal is preferably stored in the first memory 34 and the image data is stored in the second memory 38. In the case of using the second memory, the above-mentioned advantages are provided, but additional hardware must be added.

6 is an internal block diagram of a second modification of the display device according to the present invention. As shown in FIG. 6, the second modification of the display apparatus according to the present invention further includes a second memory 38 and an auxiliary power supply 39 in the display apparatus according to the present invention.

The role and operation of the second memory 38 are the same as those of the first modification of FIG. 3. In the case of the first modification, when the display device 20 is powered off, the stored image data is deleted because there is no separate power supply unit for the second memory 38. Therefore, image data must be transmitted when the system is operated again.

However, when the auxiliary power supply 39 is provided, data stored in the second memory 38 may be preserved even when the display apparatus 20 is turned off. Therefore, the stored image data is preserved unless the previously stored image data is updated, that is, replaced with other image data.

As the auxiliary power supply 39, a predetermined battery or a capacitor may be used.

As described above, the present invention provides a remarkable effect of increasing the utilization of the display device by maintaining and expressing a predetermined image or video desired by the user, even when there is no input to the display device due to the power off of the system main body. There is. In other words, even after the power of the system main body is turned off, the user can display the desired image through the display device, so that it can be used as a digital picture frame or advertising means.

In particular, in inputting an image or a video into a display device, the data is processed in the system main body, instead of using an external input device, and thus is easy to use.

While the preferred embodiments of the present invention have been described using specific terms, such descriptions are for illustrative purposes only, and it is understood that various changes and modifications may be made without departing from the spirit and scope of the following claims. Should be done.

Claims (14)

A system main body having a central processing unit and at least one memory, at least one input device, and a video generating means for processing image data to be displayed; and when the system main body is operating, displaying image data received from the video generating means. In the display device, An independent power supply unit that receives power from an external power source independently of the system main body; A first memory for storing a predetermined image received from the video generating means; A controller configured to generate a control signal for repeatedly displaying the predetermined image when the system main body ends the operation; And And a display panel for repeatedly displaying the predetermined image stored in the first memory according to the control signal, so that the display device can be independently displayed even after the system body is turned off. The method of claim 1 wherein the image data, And a predetermined identifier for distinguishing the video signal. The method of claim 1 wherein the first memory, And sequentially storing the image data transmitted from the video generating means during the operation of the system main body, and storing the predetermined image data when the system main body ends the operation. The display device of claim 1, And a second memory capable of storing a plurality of frames, wherein the size of the second memory is larger than the size of the first memory. The method of claim 4, wherein And a predetermined power supply unit for holding image data stored in the second memory even after the independent power is turned off. The display device of claim 1, An analog-digital converter for converting predetermined image data received from the video generating means into a digital signal; An image scaler which converts a size of the digitally converted image data; A frame rate converter to adjust a frame rate and a frequency of the digitally converted image data; A digital-analog converter for converting the converted image data into an analog signal; And an interface unit for providing an interface with the display panel. A system body having a central processing unit and at least one memory, at least one input device and video generating means for processing image data to be displayed; And (a) an independent power supply unit that is powered from an external power source independently of the system main body; (b) a first memory for storing a predetermined image transmitted to the system main body; (c) a controller configured to generate a control signal for repeatedly displaying the predetermined image when the system body is powered off; And (d) a display apparatus including a display panel for repeatedly displaying a predetermined image stored in the first memory according to the control signal; System having a. The method of claim 7, wherein the image data, And a predetermined identifier for distinguishing the video signal. The method of claim 7, wherein the first memory, And sequentially store the image data transmitted from the video generating means during the operation of the system main body, and store the predetermined image data when the system main body ends the operation. The display device of claim 7, And a second memory capable of storing a plurality of frames, wherein the size of the second memory is larger than the size of the first memory. The method of claim 10, And a predetermined power supply for maintaining image data stored in the second memory even after the independent power is turned off. The display device of claim 7, An analog-digital converter for converting predetermined image data received from the video generating means into a digital signal; An image scaler which converts a size of the digitally converted image data; A frame rate converter to adjust a frame rate and a frequency of the digitally converted image data; A digital-analog converter for converting the converted image data into an analog signal; And an interface unit for providing an interface with the display panel. The system body of claim 7, Image data generating means for generating an image to be displayed on the display device; And And a graphic transmitter for detecting an end of the system body and transmitting the image data to a video generating means. A system having a central processing unit and at least one memory, at least one input device and a means for generating image data for display and a display device for outputting image data generated from said system body, A first operation mode of sequentially displaying image data transmitted from the system main body in a normal operation of the system main body; And And a second operation mode in which the display apparatus repeatedly displays predetermined image data received from the system main body after the system main body is turned off.