KR20040062802A - apparatus and method for instituting mode of screen change function - Google Patents

Abstract

PURPOSE: An apparatus and a method for setting a mode of a picture conversion function are provided to control a black mat generated at left and right sides of a monitor as a color and a pattern for which a consumer wishes. CONSTITUTION: A memory(110) stores crops with several patterns and coordinates of a monitor(170) on which crops are located. A microcomputer(100) analyzes a signal inputted by a remote controller or TV front panel(130), and outputs a control signal so that a crop and a coordinate corresponding to the corresponding signal are selected. A crop selection and coordinate process unit(120) selects the crop and the coordinate. A combining unit(150) blends the crop processed in the crop selection and coordinate process unit(120) with image data outputted from a video/audio decoder(160) through an OSD(On Screen Display)(140), and outputs the blended signal to the monitor(170).

Description

Apparatus and method for instituting mode of screen change function}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to mode setting of a screen conversion function in HDTV, and more particularly, to an apparatus and method for setting a crop mode in consideration of consumer preferences.

The current mandatory broadcast time of HDTV is about 10 hours per week, so it is not easy to encounter pure HDTV sources with more than 1920 × 1080i or 1280 × 720P.

The pure HDTV source is a video of 1920i × 1080i or 1280 × 720p or higher, when a HDTV camera is produced or when a film movie is converted to HDTV without deterioration of image quality, when at least 50% of the unit program is configured as an HDTV source. It is limited.

Thus, most HDTV monitors (Ready TVs) and all-in-one HDTV screens do not have the ghosting phenomena seen in traditional analog TVs, but upconverting less-clear analog 4: 3 broadcasts to 1920 × 1080i. One screen is mostly.

There are several ways to upconvert the 4: 3 analog source to 16: 9 and send it to crop, wide, zoom, spectacle, and text modes. have.

Currently, most broadcasts are sent in wide mode, and commercial broadcasts before and after pure HDTV broadcasts made by HDTV cameras are sent in crop mode (4: 3 mode).

At present, HDTV monitors cannot be said to be correct when 4: 3 and 16: 9 coexist, but the broadcaster crops when upconverting an analog source with 4: 3 aspect ratio and sending it at 16: 9 aspect ratio. Unless you send it in mode, someone with a 16: 9 HDTV will have to look wide fat.

Some HD monitors have a screen switching function even when receiving 1080i input, so it is possible to switch to crop mode with black matte at the left and right, but most HD monitors have a screen switching function when receiving HD input. (crop, wide, zoom, spectacle, text) are fixed to wide.

This wide fixing is a way to save the memory of the hardware in some kind of image processing.

Also, for HD footage produced with a pure HD camera, the owner of a 4: 3 HD monitor may watch TV in the form of a squeeze or letter box with black mattes above and below the screen. You will have to.

Therefore, as the spread of HDTV monitors with 16: 9 aspect ratio increases, the production of SD cameras will be sent in crop mode with black mats on the left and right as we saw in the commercial before and after HD broadcasting. will be.

If a broadcaster sends a new color and pattern to the black mat without the viewers, they will always have the inconvenience of not looking at the left and right bars of black color.

In addition, most HD class integrated TVs and ready-to-use TVs include NTSC analog receivers (tuners), so that those who are familiar with 4: 3 aspect ratio analog broadcasting have a 16: 9 aspect ratio. When watching NTSC analog broadcasts through a winner, most people will feel disgusted with the fat widescreen.

Thus, most viewers will want to watch in crop mode, which also causes the black bars on the left and right to distract viewers significantly.

As mentioned above, there are zoom, spectacle, and text modes in addition to crop mode in the case of converting 4: 3 mode to 16: 9 mode. Looking at with reference to the drawings as follows.

1A, 1B, 1C, 1D, 1E, and 1F illustrate screens displayed according to a mode setting of a general screen switching function.

Assuming that an image having a 4: 3 aspect ratio as shown in FIG. 1A is input to a TV having a 16: 9 aspect ratio, FIG. 1B is a diagram illustrating a wide mode, in which a screen is stretched sideways to show a fat screen.

1B illustrates a case in which the crop mode is selected, the screen is displayed with a 4: 3 aspect ratio and black mats 10 are formed at both sides.

FIG. 1C shows a zoom mode, which is almost similar to a 4: 3 aspect ratio, but specific portions at the top and bottom of the screen are cut out. You'll also have a bit of a truncation of the subtitles or broadcast logos.

In addition, FIG. 1E illustrates a case in which the spectacle mode is selected, in which the center portion of the screen looks normal but is unbalanced to become wider from side to side. Thus, some viewers may feel dizzy when the camera moves left and right.

In addition, FIG. 1F is a case in which the text mode is selected, and is generally similar to the zoom mode shown in FIG. 1D. Will go out.

Thus, every mode has advantages and disadvantages little by little.

However, as mentioned above, it is not uncomfortable to see 4: 3 aspect ratio as 16: 9 unless the TV source is 16: 9 DTV broadcasting.

Crop mode, which is currently being used the most, is fat to the side without damaging the 4: 3 picture unless the broadcaster processes the cropped black matte separately and sends it in various shapes or colors. Black matte left and right bars in crop mode, which are invisible, cause very large viewing discomfort for the user.

Accordingly, the present invention has been made to solve the above problems, when up-converting an SDTV-grade 4: 3 source from a digital TV station to broadcast in crop mode of 16: 9 HDTV, or NTSC analog broadcasting. The purpose is to control the black matte generated on the left and right sides of the screen when viewing in crop mode on a 16: 9 monitor by using the OSD with the color and pattern of consumer taste.

Another object of the present invention is to allow a user to set a crop for each broadcasting situation by using a user interface (a front panel of a wireless remote controller or a TV receiver).

1A, 1B, 1C, 1D, 1E, and 1F illustrate screens displayed according to a mode setting of a general screen switching function.

2 is a block diagram showing a mode setting device of the screen conversion function according to the present invention

3 is a flowchart illustrating a mode setting method of a screen conversion function according to the present invention.

Figure 4 (a) (b) is an embodiment according to the mode setting method of the screen conversion function according to the present invention

* Explanation of symbols for main parts of the drawings

10: black matte 100: microcomputer

110: memory 120: crop selection and coordinate processing unit

130: user interface 140: OSD

150: combining unit 160: video / audio decoder

170: monitor

Features of the mode setting device of the screen conversion function according to the present invention for achieving the above object is a memory for storing a crop of various patterns and the coordinates of the monitor to be placed the crop, A microcomputer that analyzes a signal input by a user interface and outputs a control signal so that crops and coordinates corresponding to the signal are selected, and selects a crop and coordinates as an interface between the memory and the microcomputer. Crop selection and coordinate processing unit and a combiner for cropping the crop processed by the crop selection and coordinate processing unit with the image data from the video / audio decoder through the OSD and outputting to the monitor It is configured to include.

In this case, the external user interface is preferably at least one of a wireless remote controller or a TV front panel.

The coordinates of the monitor are preferably coordinate values of an area set to a black matte.

In the aspect of the mode setting method of the screen conversion function according to the present invention for achieving the above object in the mode setting method of the screen conversion function for upconversion from the SD-grade 4: 3 source to play in 16: 9 HD class, Determining whether there is a mode input signal of a screen changing function through an external user interface; if it is determined that there is an input signal, determining whether a video signal currently input is in a 16: 9 crop mode; As a result, outputting the original image when the image is not in 16: 9 crop mode, and displaying a crop of various patterns on the monitor in the case of 16: 9 crop mode, and displaying the various patterns Selecting a crop desired by the user through an external user interface among the crops of and positioning the selected crop on the black mat by pre-stored coordinate values And blending the image data from the crop and the video / audio decoder located on the black matte and outputting the image data to the monitor.

In this case, crops of the various patterns may be divided into various genres such as sports, cultural arts, dramas, movies, entertainment, and news programs according to the patterns of broadcasting, and each of the patterns may be divided into detailed directories suitable for them.

Other objects, features and advantages of the present invention will become apparent from the following detailed description of embodiments taken in conjunction with the accompanying drawings.

A preferred embodiment of the mode setting device and method of the screen conversion function according to the present invention will be described with reference to the accompanying drawings.

Prior to the description, the crop is defined as the left and right black mattes of the 16: 9 crop mode.

2 is a block diagram showing a mode setting apparatus of the screen conversion function according to the present invention.

As shown in FIG. 2, a memory for storing various patterns of crops and coordinates of the monitor on which the crops are to be placed, and input by the user interface 130 through a wireless remote controller or a front panel of a TV. A microcomputer 100 for analyzing a signal and outputting a control signal to select a crop and coordinates corresponding to the signal, and cropping while serving as an interface between the memory 110 and the microcomputer 100. And a crop selection and coordinate processing unit 120 for selecting coordinates.

And a combiner for outputting the crop processed by the crop selection and coordinate processing unit 120 to the monitor 170 after blending the cropped image data from the video / audio decoder through the OSD 140 ( 150).

The operation of the mode setting device of the screen conversion function according to the present invention configured as described above will be described in detail with reference to the accompanying drawings.

3 is a flowchart illustrating a mode setting method of a screen conversion function according to the present invention.

Referring to FIG. 3, first, when the mode is up-converted from an SD class 4: 3 source and transmitted to a 16: 9 HD class, a mode input signal of a screen changing function is displayed on the front panel 130 of the wireless remote controller or the TV receiver. Determine if there is an input signal and wait for the next input signal (S10).

If there is a mode input signal of the screen changing function, it is determined whether the currently input video signal is in 16: 9 crop mode (S20).

As a result of the determination, if the 16: 9 crop mode is not displayed, the original image is output (S50). In the 16: 9 crop mode, crop selection of various patterns stored in the memory 110 is performed. The coordinate processing unit 120 displays the monitor, and the user selects a crop desired by the user through the displayed monitor.

At this time, the memory 110, which stores various patterns of crops and coordinates at which the actual crops should be located, has a left and right black matte of 16: 9 crop mode to suit the user's taste or broadcast. Depending on the characteristics of the different types of patterns are stored.

In other words, according to the patterns of broadcasting, sports, cultural arts, drama, movies, entertainment, news programs, etc. into various genres, and the appropriate directory is divided accordingly.

The sports are divided into baseball, soccer, volleyball, wrestling, ice hockey, tennis, cycles, and the like, and various data having images suitable for baseball are stored in baseball as shown in FIG.

In addition, the memory 110 stores coordinate values at which actual crops should be located.

In other words, in the 16: 9 monitor, if the coordinate value that x can have is 0 to 16 and the coordinate value that y can have as 0 to 9, (0,0), (2,0), (0,9 ) Crops are placed on the area surrounded by (2,9) and the area surrounded by (14,0), (16,0), (14,9) and (16,9).

Then, the microcomputer 100 determines whether one crop is selected (S30), and outputs the selected crop to the black matte of the screen (S40).

In this case, the microcomputer 100 analyzes various signals input by the user interface 130 and whether the current display is in a 16: 9 crop mode or a wide, zoom, spectacle, or text mode. In the crop mode, a control signal is output to the memory 110 and the crop selection and coordinate processing unit 120 so that crop and coordinate corresponding to the signal are selected.

Then, the crop selection and coordinate processing unit 120 receives control signals from the microcomputer and serves as an interface between the memory 110 and the microcomputer 100 to obtain various types of crops and the above-mentioned coordinates. The coordinates from memory 110 are selected by value.

The cropped process is blended with the image data output through the video / audio decoder 160 through the OSD 140 in the combiner 150 and then output to the monitor 170.

When the crop you want is selected, the selected crop is output to the monitor 170. If you do not select the crop you want, the 16: 9 crop mode with the original black mat is selected. Outputs (S60).

The user can select the crop of the desired shape through this method, even if up-converting the SD from the actual broadcasting station and sending it to the black mat without any processing in the crop mode of 16: 9, 4 : 3 It will reduce the inconvenience of seeing black bands when watching NTSC broadcasts in crop mode on a 16: 9 HDTV monitor.

Also, this part may be used for data broadcasting. That is, if a real broadcast station provides a crop of a specific shape in the coordinates corresponding to the black mat, the user may watch the image having a small rejection instead of the border of the black bar.

A broadcast station that can provide a low-resistance image on the black mat of the monitor 170 has a fixed coordinate value since it is always displayed at the same position of the received TV, and according to each coordinate value received from the received TV. Since it is displayed as it is, no resources are required.

Mode setting apparatus and method of the screen conversion function according to the present invention as described above has the following advantages.

When converting an SDTV-grade 4: 3 source from a digital TV station to broadcast in crop mode on a 16: 9 HDTV, or watching NTSC analog broadcasts in crop mode on a 16: 9 monitor By converting the black matte generated in the image into a color and pattern desired by the consumer, it can reduce the rejection of the black bar and also enjoy a clear image to see.

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 (5)

A memory that stores various patterns of crops and coordinates of the monitor on which the crops should be located; A microcomputer that analyzes a signal input by an external user interface and outputs a control signal so that crops and coordinates corresponding to the signal are selected; A crop selection and coordinate processing unit which serves as an interface between the memory and the microcomputer and selects crop and coordinates; And a combiner for blending the crop processed by the crop selection and coordinate processing unit with the image data output through the video / audio decoder through an OSD and outputting the crop to the monitor. Mode setting device. The method of claim 1, And the external user interface is at least one of a wireless remote controller or a front panel of a TV. The method of claim 1, And a coordinate of the monitor is a coordinate value of an area set to a black matte. In the mode setting method of the screen conversion function of up-converting from an SD class 4: 3 source and transmitting to a 16: 9 HD class, Determining whether there is a mode input signal of a screen changed function through an external user interface; If it is determined that there is an input signal, determining whether the currently input video signal is in a 16: 9 crop mode; As a result of the determination, outputting the original image when the image is not in 16: 9 crop mode, and displaying crops of various patterns stored in the monitor in the 16: 9 crop mode; Selecting the crops desired by the user from the various patterns of crops displayed through the external user interface; Positioning the selected crop on the black mat by pre-stored coordinate values; And blending the image data from the crop and the video / audio decoder positioned on the black matte and outputting the image data to the monitor. The method of claim 4, wherein Crop of the various patterns are divided into various genres such as sports, culture, arts, drama, movies, entertainment, and news programs according to the pattern of the broadcast, and each of them is formed by dividing the detailed directory according to the screen conversion function How to set the mode.