KR100900584B1 - Method for outputting multimedia signal - Google Patents

Abstract

The present invention relates to a method for outputting a multimedia signal, the method comprising: (a) acquiring specification information of a display apparatus; (b) attempting to obtain media information of the multimedia to be played; (c) if the media information is not obtained, determining a basic output resolution, a basic output scanning scheme, and a basic output refresh rate as the signal output scheme of the multimedia; (d) If an integer multiple of the media frame rate is not present in the combination specification information, it is determined as the output refresh rate of the multimedia based on the media information, the currently set output resolution and the output scanning scheme, and the currently set output resolution and output scanning scheme. Determining the output resolution and output scanning scheme of the multimedia, respectively; (e) If an integer multiple of the media frame rate is present in the combination specification information, the supported playback rate which is the maximum integer multiple of the media frame rate is determined as the output reproduction rate of the multimedia, and the currently set output resolution and output scanning scheme are respectively determined by Determining an output resolution and an output scanning scheme; And (f) decoding the multimedia to provide the display apparatus with the determined output resolution, output scanning method, and output refresh rate. According to the present invention, a viewer can watch a more naturally reproduced multimedia through a TV or the like.

Description

Method for outputting multimedia signal {method for outputting multimedia signal}

1 is a diagram illustrating a system to which the multimedia signal output method of the present invention can be applied.

2 is a flowchart illustrating a multimedia signal output method according to an embodiment of the present invention.

FIG. 3 shows a table illustrating an output resolution, an output scanning method, and an output refresh rate determined according to the method of FIG. 2 when a currently set output method and media information are given.

4 is a flowchart illustrating a method of outputting a multimedia signal according to another embodiment of the present invention.

5 is a flowchart illustrating a multimedia output method according to another embodiment of the present invention.

The present invention relates to a method of outputting a multimedia signal, and more particularly, to a method of outputting a multimedia signal to a display device by a multimedia player so that a viewer can watch a more naturally reproduced multimedia.

In general, a display device such as a monitor or TV is connected to various multimedia playback devices such as a computer and a DVD player to display an image.

The Video Electronics Standard Association (VESA) has established an EDID that contains information about display devices, and a Display Data Channel (DDC) protocol for communication between a multimedia providing device and a display device. According to the DDC protocol, when a display device is connected to a multimedia providing device and power is applied to the display device, an EDID is provided to the multimedia playback device, and the multimedia playback device is in a mode suitable for the EDID provided from the display device. It provides a video signal to be displayed.

The conventional multimedia providing apparatus outputs a multimedia signal in accordance with the maximum resolution supported by the display apparatus, the scanning method corresponding thereto, and the refresh rate accordingly. However, according to this method, the multimedia signal is output by considering only the display device without distinguishing whether the playback rate of the multimedia is 50Hz or 60Hz, and thus the playback rate of the multimedia and the refresh rate of the display device are different from each other at 50Hz and 60Hz. There is a limitation in that playback is not naturally played out from the user's perspective.

Accordingly, there is a need for a method of outputting a multimedia signal in consideration of both the characteristics of the multimedia and the characteristics of the display device, so that the viewer can watch the more naturally reproduced multimedia.

SUMMARY OF THE INVENTION The present invention has been made in an effort to provide a method of outputting a multimedia signal to a display device by a multimedia reproducing device so that a more naturally reproduced multimedia can be viewed.

In order to achieve the above technical problem, an aspect of the present invention provides a method for outputting a multimedia signal to a display device by a multimedia playback device, comprising: (a) specification information of the display device-supported resolution supported by the display device; And at least one combination specification information consisting of a combination of a scanning scheme and a supported refresh rate; (b) attempting to obtain media information including media resolution, media scanning scheme, and media refresh rate of the multimedia to be currently played; (c) In step (b), if the media information is not obtained, a predetermined basic output resolution, a basic output scanning scheme, and a basic output refresh rate are respectively set as the output refresh rate, output scanning scheme, and output resolution of the multimedia. Determining to; (d) the media information, the currently set output resolution and the currently set output scan, if an integer multiple of the media frame rate obtained in step (b), which is obtained from the media scanning method and the media reproduction rate, does not exist in the combination specification information; Determining an output refresh rate of the multimedia based on a scheme, and determining a currently set output resolution and a currently set output scan scheme as the output resolution and output scan scheme of the multimedia; (e) if an integer multiple of the media frame rate obtained in step (b) is present in the combination specification information, the supported reproduction rate, which is the maximum integer multiple of the media frame rate, among the supported reproduction rates included in the combination specification information, is determined. Determining the output refresh rate and determining the currently set output resolution and the currently set output scanning scheme as the output resolution and output scanning scheme of the multimedia; And (f) decoding the multimedia to provide the determined display resolution, output scanning method, and output refresh rate to the display apparatus.

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

1 is a diagram illustrating a system to which the method for outputting a multimedia signal of the present invention can be applied. The system of the present embodiment is largely comprised of a multimedia reproducing apparatus 100 and a display apparatus 180.

The display device 180 provides EDID (Extended Display Identification Data) to the multimedia player 100, and displays an image corresponding to the multimedia signal provided from the multimedia player 100 on the screen.

The EDID may include various information about the display device 180. For example, the resolution supported by the display device 180 (hereinafter referred to as support resolution for convenience) and the scanning method (hereinafter for convenience and support scanning) Specification information such as a method) and a refresh rate (hereinafter referred to as a support refresh rate for convenience).

Supported resolution, supported scanning method, and supported refresh rate may be bundled and expressed in the form of 1080i60, etc. 1080i60 is referred to herein as combination specification information for convenience.

Examples of the combination specification information include 720p50, 720p60, 1080i50, 1080i60, 1080p24, 1080p25, 1080p30, 1080p50, and 1080p60. Here, 720 and 1080 represent a supported resolution (specifically, vertical resolution), and p and i represent a supported scanning scheme. In other words, i represents an interlaced scan method and p represents a progressive scan method. 50, 60, 24 and 30 represent the refresh rate.

Referring to FIG. 1, the multimedia player 100 may include a user interface 110, a storage 120, a decoder 130, a transceiver 140, and a controller 150. It can be fully understood by those skilled in the art that the decoder 130 and the controller 150 can implement the multimedia playback apparatus in various ways such as one chip. That is, since FIG. 1 is only an exemplary diagram for explaining the method of the present invention, it is also within the scope of the present invention that the multimedia playback apparatus modified from FIG. 1 performs the method of the present invention.

The user interface 110 receives various information or commands from the user, and provides the user with various information that the multimedia player 100 may provide through a screen, sound, lamp flashing, and the like.

The storage unit 120 exists in the form of a hard disk, a DVD drive, or the like to store multimedia data. The multimedia data is decoded by the decoder 130. Hereinafter, the multimedia data is referred to as multimedia for convenience.

The decoder 130 decodes the multimedia stored in the storage 120.

The transceiver 140 receives an EDID from the display device 180 and provides a multimedia signal to the display device 180.

The controller 150 controls various modules of the multimedia player 100 so that the multimedia signal output method of the present invention can be performed. In detail, the controller 150 reproduces the current content based on the EDID received from the transceiver 140, media information obtained from the multimedia stored in the storage 120, and user setting information provided from the user interface 110. After determining the output resolution, the output scanning method, and the output refresh rate of the multimedia, the decoder 130 and the transceiver 140 to provide the multimedia signal to the display device 180 at the determined output resolution, output scanning method, and output refresh rate. ).

2 is a flowchart illustrating a method of outputting a multimedia signal according to an embodiment of the present invention, specifically, a flowchart corresponding to a method of determining an output method of a refresh rate auto mode (first mode).

Referring to FIG. 2, first, the multimedia player 100 obtains specification information of a display device through an EDID (S200). The specification information may include at least one combination specification information including a combination of a supported resolution, a supported scanning scheme, and a supported refresh rate supported by the display apparatus 180. Examples of the combination specification information include 720p50, 720p60, 1080i50, 1080i60, 1080p24, 1080p25, 1080p30, 1080p50, and 1080p60 as described above.

Next, the multimedia player 100 attempts to obtain a media information of the multimedia to be played (S210). Here, the media information is largely composed of a frame rate (frame / sec) and a resolution, and as in the combination specification information, the resolution (hereinafter referred to as media resolution for convenience), the scanning method (hereinafter for convenience, media scanning method), and the refresh rate (hereinafter for convenience, Media play rate). On the other hand, the media play rate in the progressive scan method is the same as the frame rate, and the media play rate in the interlaced scan method is expressed as twice the frame rate. For example, the content having the media information of 1080i50 and 1080p50 has frame rates of 25 and 50, respectively.

In general, media information is obtained through header information of multimedia having a format such as MPEG-2 stored in the storage 120.

If the media information is not obtained in step S210, the multimedia playback apparatus 100 determines the predetermined basic output resolution, basic output scanning scheme, and basic output refresh rate as the output refresh rate, output scanning scheme, and output resolution of the multimedia, respectively. After the determination proceeds to step S260 (S220). Preferably, the basic output resolution, the basic output scanning scheme, and the basic output refresh rate are values that can obtain the maximum image quality among the values supported by most display devices, for example, values corresponding to 1080i60.

When the media information is acquired in step S210, the multimedia playback apparatus 100 determines whether an integer multiple of the media frame rate exists in the combination specification information obtained in step S200 (S230).

If the integer multiple of the media frame rate does not exist in the combination specification information obtained in step S200 (S230), the multimedia playback apparatus 100 outputs the multimedia output rate based on the media refresh rate, the currently set output resolution, and the currently set output scanning scheme. Next, the output resolution and the output scanning method of the multimedia are determined as the output resolution and the output scanning method of the multimedia, respectively, and the process proceeds to step S260 (S240).

For example, if the media refresh rate is 24 Hz and the combination of the currently set output resolution and the currently set output scanning scheme is 720p or 1080i, the multimedia player 100 determines the output refresh rate of the multimedia to 50 Hz. This content is reflected in FIG. 3 as it is.

Meanwhile, examples of the currently set output resolution and the currently set output resolution may include a value set by a user and a value used for outputting a multimedia signal.

If the integer multiple of the media play rate is present in the combined specification information acquired in step S200 (S230), the multimedia playback apparatus 100 may determine a supported play rate that is the maximum integer multiple of the media frame rate among the supported play rates included in the combined specification information. The output refresh rate is determined, and the currently set output resolution and the currently set output scanning scheme are determined as the output resolution and the output scanning scheme of the multimedia, respectively, and the flow proceeds to step S260. That is, since the display at 1080p50 is better than the 1080p25 in terms of image quality, the media information is 1080p25, and when the display device supports 1080p50, it is preferable to output a multimedia signal at 1080p50.

Thereafter, the multimedia reproducing apparatus 100 decodes the multimedia and provides the decoded multimedia to the display apparatus 180 at the determined output resolution, output scanning method, and output refresh rate (S260).

FIG. 3 shows a table illustrating an output resolution, an output scanning method, and an output refresh rate determined according to the method of FIG. 2 when a currently set output method and media information are given. 3 is a table arranged on the premise that the display device can support 720p50, 720p60, 1080i50, 1080i60, 1080p24, 1080p25, 1080p30, 1080p50, and 1080p60.

The horizontal axis at the top represents the media refresh rate and the media scanning method obtained from the media information, and the vertical axis at the left represents the currently set output method, and the remaining part is the signal output method (output resolution, output scanning) of the multimedia to be determined accordingly. System, output refresh rate).

3, it can be seen that the leftmost vertical axis is divided into 720p, 1080i, and 1080p as a resolution and scanning method. As described in FIG. 2, the resolution and scanning method among the currently set output methods are used as they are for the output of the next multimedia (that is, the multimedia to be reproduced at present). However, the output reproduction rate of the output scheme is determined according to the scheme of FIG. 2 based on the media attribute information and the combination specification information.

4 is a flowchart illustrating a method of outputting a multimedia signal according to another embodiment of the present invention, specifically, a flowchart corresponding to a method of determining an output method of a refresh rate native mode (second mode).

Referring to FIG. 4, first, the multimedia player 100 obtains specification information of a display device through an EDID (S400). Here, specification information is demonstrated similarly to what was demonstrated in FIG.

Next, the multimedia playback apparatus 100 attempts to obtain a media information of the multimedia to be reproduced (S410). Here, the media information is described in the same manner as described in FIG.

If the media information is not obtained in step S410, the multimedia playback apparatus 100 sets a predetermined basic output resolution, a basic output scanning scheme, and a basic output refresh rate as the output refresh rate, the output scanning scheme, and the output resolution of the multimedia, respectively. After determining, the process proceeds to step S450 (S420). Preferably, the basic output resolution, the basic output scanning scheme, and the basic output refresh rate are values that can obtain the maximum image quality among the values supported by most display devices, for example, values corresponding to 1080i60.

When the media information is acquired in step S410 (S410), the multimedia playback apparatus 100 determines the media resolution, the media scanning method, and the media playback rate as the output resolution, the output scanning method, and the output refresh rate of the multimedia, and then, in step S440. Proceed to (S430). Here, the example of the predetermined maximum resolution may be 1080.

Thereafter, the multimedia reproducing apparatus 100 decodes the multimedia and provides the decoded multimedia to the display apparatus 180 at the determined output resolution, output scanning method, and output refresh rate (S440).

5 is a flowchart illustrating a multimedia output method according to another embodiment of the present invention, in which the method of FIG. 2 and the method of FIG. 4 are performed according to a mode set by a user.

Referring to FIG. 5, first, a user performs a setting of selecting one of an automatic mode from a first mode and a second mode through the user interface 110 of the multimedia player 100 (S600).

In step S600, if the first mode is set (S610), the multimedia signal is output in the method of FIG. 2 (S620).

In step S600, if the second mode is set (S610), the multimedia signal is output by the method of FIG. 4 (S630).

The invention may also be embodied as machine readable code on a machine readable recording medium. The recording medium includes all kinds of recording devices for storing data that can be read by a machine. Examples of the recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like, and also include a carrier wave (for example, transmission through the Internet). The machine-readable recording medium can also be distributed over networked machines so that the machine-readable code is stored and executed in a distributed fashion. In addition, functional programs, codes, and code segments for implementing the present invention can be easily inferred by programmers in the art to which the present invention belongs.

Such a method and apparatus of the present invention have been described with reference to the embodiments shown in the drawings for clarity, but these are merely exemplary, and various modifications and equivalent other embodiments are possible to those skilled in the art. Will understand. Therefore, the true technical protection scope of the present invention will be defined by the appended claims.

According to the present invention, a viewer can watch a more naturally reproduced multimedia, and can determine a multimedia signal output scheme in a convenient manner.

Claims (8)

In the multimedia playback device outputs a multimedia signal to the display device, (a) obtaining specification information of the display device, the at least one combination specification information comprising a combination of a supported resolution, a supported scanning scheme, and a supported refresh rate supported by the display device; (b) attempting to obtain media information including media resolution, media scanning scheme, and media refresh rate of the multimedia to be currently played; (c) In step (b), if the media information is not obtained, a predetermined basic output resolution, a basic output scanning scheme, and a basic output refresh rate are respectively set as the output refresh rate, output scanning scheme, and output resolution of the multimedia. Determining to; (d) the media information, the currently set output resolution and the currently set output scan, if an integer multiple of the media frame rate obtained in step (b), which is obtained from the media scanning method and the media reproduction rate, does not exist in the combination specification information; Determining an output refresh rate of the multimedia based on a scheme, and determining a currently set output resolution and a currently set output scan scheme as the output resolution and output scan scheme of the multimedia; (e) if an integer multiple of the media frame rate obtained in step (b) is present in the combination specification information, the support reproduction rate, which is the maximum integer multiple of the media frame rate, among the supported reproduction rates included in the combination specification information; Determining an output refresh rate of and determining the currently set output resolution and the currently set output scanning scheme as the output resolution and output scanning scheme of the multimedia, respectively; And (f) decoding the multimedia and providing the multimedia information to the display apparatus at the determined output resolution, output scanning scheme, and output refresh rate. The method of claim 1, (g) setting an automatic mode by user input; And (h) if the automatic mode is the second mode, determining the media resolution, media scanning method, and media refresh rate of the media information obtained in step (b) as the output resolution, output scanning method, and output refresh rate of the multimedia. More steps, And (d) and (e) are performed when the automatic mode is the first mode. The method of claim 1 or 2, wherein the basic output resolution, the basic output scanning method, and the basic output refresh rate, Method for outputting a multimedia signal, characterized in that corresponding to 1080i60. The method according to claim 1 or 2, wherein step (d) comprises: If the media refresh rate is 24 Hz, and the combination of the currently set output resolution and the currently set output scanning scheme is 720p or 1080i, determining the output refresh rate of the multimedia to 50 Hz. The method of claim 1 or 2, wherein the currently set output resolution, And a value set by the user or one of values previously used for outputting the multimedia signal. The method of claim 1 or 2, wherein step (a) comprises: And obtaining the specification information in a manner of receiving an EDID from the display device. The combination specification information of claim 1 or 2, A method for outputting a multimedia signal, characterized in that any one of 720p50, 720p60, 1080i50, 1080i60, 1080p24, 1080p25, 1080p30, 1080p50, and 1080p60. A computer-readable recording medium containing a program for performing the method according to claim 1 or 2.

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