KR101285672B1 - Method for displaying OSD and Display apparatus thereof - Google Patents

Abstract

The present invention relates to an OSD display method of an image device for displaying OSD (On Screen Display) information on the screen and the image device. The present invention provides a method for processing an input video signal to be displayed; Store information of a predetermined predetermined area; Compensating the image signal from the signal processing step according to the movement of the image; Displaying the image signal processed from the motion compensation step; Control is performed so that the compensation processing according to the movement of the image is performed only on the remaining area except the predetermined area of the screen stored in the area information storage step. The method may further include processing the OSD image for the interface with the user to be output on the screen and transferring the same to the motion compensation step. A predetermined area of the screen is set based on the predetermined area information stored in the area information storage step. The area information is superimposed. The motion compensation step is to convert the input image from the 60Hz frame rate to a frame rate of 120Hz. Therefore, by setting a specific window area in which the motion compensation function is not processed to correspond to the OSD displayed on the screen, it is possible to prevent a transient phenomenon in which the OSD screen is dragged in the moving direction of the image.

Imager, OSD, Motion Compensation, Area, Transient, Super Imposing

Description

OSD display method of an image device and its video device TECHNICAL FIELD

1 is a block diagram showing an OSD display device of a conventional video device.

2 is a control flowchart illustrating an OSD display method of a conventional video device.

3 is a screen configuration diagram showing a conventional OSD display state.

Figure 4 is a block diagram showing an OSD display device of the video device according to the present invention.

5 and 6 are control flow charts showing the OSD display method of the video device according to the present invention.

7 is a screen configuration diagram showing an OSD display state according to the present invention.

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

200: signal processing unit 210: area information storage unit

220: OSD processing unit 230: motion compensation unit

240: display module 250: control unit

The present invention relates to an image device, and more particularly, to an OSD display method of an image device for displaying OSD (On Screen Display) information on a screen and the image device.

With the recent development of digital technologies such as digital image compression and digital modulation and demodulation, the standardization of digital TV broadcasting is rapidly progressing, and existing terrestrial, satellite, and cable broadcasting are digitized based on the Moving Picture Experts Group (MPEG). have. As such, digital broadcasting can provide higher quality of service than analog service according to the development of digital video / audio compression technology and digital transmission technology, and can transmit multiple broadcast programs in the same bandwidth, digital communication media and digital storage. There is an advantage in that interoperability with the media can be improved.

1 is a block diagram illustrating an OSD display of a conventional video device. As an example of the video device, a digital TV includes a DTV tuner unit 100, a VSB demodulator unit 110, a demux 120, Decoder and image processor 130, video decoding module 131, audio decoding module 132, clock recovery and A / V synchronization processor 133, OSD generator 134, display processor 135, display panel ( 140, a speaker 150, a controller 160, and a storage unit 170.

The DTV tuner 100 receives a digital broadcast signal in the form of a transport stream on the selected channel. The VSB demodulator unit 110 demodulates the transport stream received by the DTV tuner unit 200. Demux 120 demultiplexes the demodulated transport stream into respective video bitstreams, audio bitstreams and PSIP data.

The decoder and the image processor 130 decode and image the respective signals demultiplexed by the transport demux 220 to output video and audio signals.

To this end, the decoder and the image processor 130 may include a video decoding module 131 for decoding a video bitstream (MPEG-2 Bitstream) into a video signal, and an audio for decoding the audio bitstream (AC-3 Bitstream) into an audio signal. A time stamp signal is input from the decoding module 132 and the respective video and audio bitstreams, and the clock recovery and A / V synchronization signals of the video decoding module 131 and the audio decoding module 132 are received. A clock recovery and A / V synchronization processor 133 and a display processor 134 for converting the video signal decoded by the video decoding module 131 into a displayable image output format.

In addition, the OSD generating unit 134 generates the OSD by a user's manipulation or control of the system.

The display processor 134 includes a scaler function. For example, the display processor 134 may include a 4: 3 screen, a 16: 9 screen, a zoom, a wide, or a spectacle. It is possible to scale the aspect ratio of various sizes such as).

In addition, the video signal processed by the video decoding module 131 and the OSD generated by the OSD generator 134 are output so as to overlap on the screen on which the video is displayed.

The decoder and image processor 130 includes the video decoding module 131, the audio decoding module 132, a clock recovery and A / V synchronization processor 133, an OSD generator 134, and a display processor 135. It is preferably composed of one microchip.

The display panel 140 displays the video signal on the screen, and in particular, displays a moving picture processed motion compensation function on the screen. The speaker 250 outputs the audio signal to an indoor / outdoor space. The display unit 240 is a screen constituting an actual image, various configurations such as CRT, PDP, LCD, OLED, and projection are possible.

The control unit 260 may be configured with conventional control means having a comparison, determination, and arithmetic functions such as a micro-processor, a microcomputer, a central processing unit (CPU), a microprocessor unit (MPU), or the like. .

The storage unit 170 stores the video signal received through the DTV tuner 200 according to the image signal storage command of the controller 260.

As a display panel for implementing such a digital TV, a flat panel display (FPD) is generally used in recent years. A flat panel display panel is an image display device that is thinner and lighter than a monitor CRT. Such flat panel displays include liquid crystal display (LCD), liquid crystal display (PDP), and plasma display panel (PDP) using gas discharge. In addition, OLED (Organic Light Emitting Diodes), an organic material made by using light emitting phenomenon that emits light when electric current flows through fluorescent organic compound, and other fields such as FED (Field Emission Display) and ELD (Electro Luminescence Display) .

Among the various flat panel display panels as described above, an LCD panel supporting a frame rate of 120 hz is currently being produced. The 120hz LCD panel is to compensate for the disadvantages such as flickering or flickering motion blur in a moving image of a 60Hz frame rate LCD panel. .

The conventional digital TV may display an OSD or EPG screen together with a moving image on a screen to provide useful information to a user or to display a menu and a status for operating a device.

In addition, the Motion Compensation function is applied to make the video look smoother by calculating and inserting an intermediate image by calculating a change amount of the motion vector between each frame of the video. .

FIG. 2 is a control flowchart illustrating an OSD display method of a conventional video device, and FIG. 3 is a screen configuration diagram illustrating a conventional OSD display state of FIG. 2.

As shown, the OSD display method of the conventional digital TV, first receives the received video signal and performs the processing (S101 ~ S102).

Then, when the OSD is generated by the user's operation or the control of the system, the video is processed and displayed on the screen together with the OSD (S103).

In this case, when the motion compensation function is applied, the motion compensation function is performed on the entire screen on which the video is displayed together with the OSD (S104).

Therefore, the motion compensation processed video is displayed on the display panel together with the OSD (S105).

However, in the conventional OSD display method of the conventional video device, as shown in FIG. 3 when the motion compensation function is performed, the OSD output displayed in the center of the screen is also recognized as a moving video and the motion compensation process is performed together. On the screen, there was a problem that a large transient phenomenon, that is, the OSD screen was dragged in the moving direction of the image.

Accordingly, the present invention is to solve the above-mentioned general problems, OSD display method of the video device to prevent the transient by setting a specific window area that the motion compensation function is not processed to correspond to the OSD displayed on the screen and The purpose is to provide the video device.

According to an aspect of the present invention, there is provided a video device including: a signal processor configured to process an input video signal to be displayed; An area information storage unit for storing information of the predetermined area; A motion compensator for compensating the video signal from the signal processor according to the motion of the video; A display module configured to display an image signal processed by the motion compensator; And a controller for controlling the motion compensator so as to compensate for the motion of the image only for the remaining areas except for the predetermined area of the screen stored in the area information storage unit.

The apparatus may further include an OSD processing unit which processes the OSD image for the interface with the user to be output on the screen and transmits the OSD image to the motion compensator.

For example, a predetermined area of the screen is set based on predetermined area information stored in the area information storage unit. The area information is super imposing. The display module has a frame rate of 120 Hz. The motion compensator is a frame rate converter for converting an input image from a 60 Hz frame rate to a frame rate of 120 Hz.

In addition, the OSD display method of the video device according to the present invention, the signal processing step of processing to display the input video signal; An area information storage step of storing information of a predetermined area set; A motion compensation step of compensating the video signal from the signal processing step according to the motion of the video; A display step of displaying a video signal processed from the motion compensation step; And controlling the compensation process according to the movement of the image to only the remaining areas except the predetermined area of the screen stored in the area information storage step.

The method may further include an OSD processing step of processing the OSD image for the interface with the user to be output on the screen and transferring the OSD image to the motion compensation step.

For example, a predetermined area of the screen is set based on predetermined area information stored in the area information storage step. The area information is super imposing. The output of the display step has a frame rate of 120 Hz. The motion compensation step is to convert the input image from the 60Hz frame rate to a frame rate of 120Hz.

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

4 is a block diagram illustrating an OSD display device of an imaging apparatus according to the present invention.

As shown, the present invention includes a signal processor 200, an area information storage 210, an OSD processor 220, a motion compensator 230, a display module 240, and a controller 250.

The signal processor 200 processes the input video signal to be displayed.

The area information storage unit 210 stores the information of the predetermined predetermined area.

A predetermined area of the screen is set based on predetermined area information stored in the area information storage unit 210. The area information is super imposing. Superimposing in the present invention refers to superimposing a different signal on a video signal by using a subtitle or fader control of a special effect device on the screen.

The motion compensator 230 compensates for the image signal from the signal processor 200 according to the motion of the image. The motion compensator 230 is a frame rate converter for converting an input image from a 60 Hz frame rate to a frame rate of 120 Hz.

The display module 240 displays the image signal processed by the motion compensator 230. The display module 240 has a frame rate of 120 Hz. In addition, various module configurations such as CRT, PDP, LCD, OLED, and projection are possible.

The controller 250 controls the motion compensator 230 to compensate for the motion of the image only for the remaining areas except for the predetermined area of the screen stored in the area information memory 210.

The OSD processor 220 transmits the OSD image for the interface with the user to the motion compensator 230 to process the OSD image on the screen of the display module 240.

5 and 6 are control flowcharts illustrating an OSD display method of an image apparatus according to the present invention, and FIG. 7 is a screen configuration diagram illustrating an OSD display state according to the present invention.

As shown, the OSD display method of the video device according to the present invention, the signal processing step of processing to display the input video signal (S210); An area information storage step (S220) for storing information on a predetermined area; A motion compensation step (S240) of compensating the video signal from the signal processing step according to the motion of the video; A display step (S250) of displaying a video signal processed from the motion compensation step; And controlling the compensation process according to the movement of the image to only the remaining areas except the predetermined area of the screen stored in the area information storage step (S260).

The method may further include an OSD processing step S230 of processing the OSD image for the interface with the user to be output on the screen and transferring the OSD image to the motion compensation step.

Referring to the preferred embodiments of the present invention configured as described above in more detail with reference to the accompanying drawings as follows.

First, a signal processing step of processing an input video signal to be displayed is performed (S210).

In this case, the signal processor 200 processes the input video signal to be displayed.

Subsequently, an area information storage step of storing information of the set predetermined area is performed (S220).

Therefore, the area information storage section 210 stores the information of the predetermined area. At this time, a predetermined area of the screen is set based on predetermined area information stored in the area information storage unit 210. The area information is superimposed, i.e., a subtitle or a fader control of a special effect device is processed to overlap another signal with a video signal.

Subsequently, an OSD processing step of processing an OSD image for an interface with a user to be outputted on the screen and transferring it to the motion compensation step is performed (S230).

The OSD processor 220 transmits the OSD image for the interface with the user to the motion compensator 230 to process the OSD image on the screen of the display module 240. In addition, OSD is generated by user's operation or control of the system.

A motion compensation step of compensating the video signal from the signal processing and OSD processing according to the motion of the image is performed (S240).

Therefore, the motion compensator 230 compensates for the image signal from the signal processor 200 according to the movement of the image. The motion compensator 230 is a frame rate converter, and converts an input image from a 60 Hz frame rate to a frame rate of 120 Hz.

The motion compensator 230 displays a video by applying a motion compensation function to make the video look smoother by calculating and inserting an intermediate image by calculating a change amount of a motion vector between frames of the video.

Thereafter, a display step of displaying the image signal processed from the motion compensation step is performed (S250).

Accordingly, the display module 240 displays the image signal processed by the motion compensator 230, in which the display module 240 processes the image at a frame rate of 120 Hz and displays the image signal.

In operation S260, a control process may be performed on the remaining areas except for the predetermined area of the screen stored in the area information storing step according to the movement of the image.

Therefore, the controller 250 controls the motion compensator 230 to compensate for the motion of the image only for the remaining areas except for the predetermined area of the screen stored in the area information memory 210.

Referring to the motion compensation step in more detail, as shown in FIG. 6, it is first determined whether an OSD display command is generated by a user's manipulation or a system's control (S261).

Thereafter, the generated OSD is displayed on the screen. At this time, the window area is set to correspond to the OSD displayed on the screen (S262).

In this case, the OSD area is set by the change of the vector amount around the start position (x, y) (S263). As shown in FIG. 7, when the OSD is displayed on the screen, the x and y coordinate points where the OSD is started, and the width and height values, which are size, are calculated in advance. The window area set to correspond to the OSD is an area of a part of the entire screen.

A step of partially turning off the motion compensation function with respect to the area set as described above is performed (S264).

When the OSD is off, the motion compensation function is applied to the entire screen by turning on the motion compensation function that has been turned off for the OSD area.

Therefore, by setting a specific window area in which the motion compensation function is not processed to correspond to the OSD displayed on the screen, it is possible to prevent a transient phenomenon in which the OSD screen is dragged in the moving direction of the image.

The present invention described above can be applied to flat panel display devices such as OLEDs, PDPs, and LCDs, as well as to projection TVs, general TVs, monitors and other video devices, and can be equally applied to analog TVs, digital TVs, and satellite TVs. have. It is needless to say that the present invention can be applied to both NTSC, PAL, and SECAM.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but many variations and modifications may be made without departing from the scope of the invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the appended claims.

As described above, according to the OSD display method of the video device and the video device according to the present invention, the OSD screen is moved by setting a specific window area in which the motion compensation function is not processed to correspond to the OSD displayed on the screen. It is effective to prevent the phenomenon of transient dragging in the direction.

Claims (12)

A signal processor which processes an input video signal to be displayed; An area information storage unit for storing information of the predetermined area; A motion compensator for compensating the image signal processed by the signal processor according to the motion of the image; A display module configured to display an image signal processed by the motion compensator; And And a controller configured to control the motion compensator to perform compensation processing according to the movement of the image only for the remaining areas except the predetermined area of the screen stored in the area information storage unit. And the information of the region is super imposed. The method of claim 1, And an OSD processing unit which processes the OSD image for the interface with the user to be output on the screen and transmits the OSD image to the motion compensator. The method of claim 1, And a predetermined area of the screen is set based on information of a predetermined area stored in the area information storage unit. delete The method of claim 1, The display module is a video device, characterized in that the frame rate (Frame rate) is 120Hz. The method of claim 1, And the motion compensator is a frame rate converter for converting an input image from a 60 Hz frame rate to a frame rate of 120 Hz. A signal processing step of processing the input video signal to be displayed; An area information storage step of storing information of a predetermined area set; A motion compensation step of compensating the video signal from the signal processing step according to the motion of the video; A display step of displaying a video signal processed from the motion compensation step; And And controlling a compensation process according to the movement of the image to only the remaining areas except the predetermined area of the screen stored in the area information storing step. And the information of the region is super imposed. 8. The method of claim 7, OSD processing step of processing the OSD image for the interface with the user to output on the screen and the transfer to the motion compensation step further comprising the OSD display method. 8. The method of claim 7, And a predetermined area of the screen is set based on information of a predetermined area stored in the area information storage step. delete 8. The method of claim 7, The output of the display step is the OSD display method of the video device, characterized in that the frame rate (Frame rate) is 120Hz. 8. The method of claim 7, The motion compensation step of the OSD display method of the video device, characterized in that for converting the input image from the 60Hz frame rate to a frame rate of 120Hz (Frame rate converter).

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