JP2001202074A - Image display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display method which can facilitate the management of media even if the number of the media which should be displayed increases or decreases when plural contents are displayed on one screen. SOLUTION: A display control module 30 when receiving data sent by compounding or multiplexing plural media and processing the received data to display an image separates the received data to extract the media such as the original video and a subtitle again, decides whether or not there is a display window by the extracted media, generates video display objects 40 and 50 by the extracted media at least when there is no display window, gives properties of a video display window, etc., performs an output process for the received data by the media according to the video display objects, and provides the data for a display means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for receiving data transmitted by combining or multiplexing a plurality of media including visual data such as video and subtitles, and processing the received data to provide a plurality of media. For displaying images simultaneously.

[0002]

2. Description of the Related Art Heretofore, when displaying one program constituted by multiplexed data, a method has been adopted in which at least one program is displayed by a single display control program. Although the multiplexed data is a medium to be visually displayed, the multiplexed data may include data that is processed differently, such as video, subtitles, and graphics. However, even in such a case, display is realized by a single display control program.

[0003]

When it is attempted to display a plurality of different visual media on the screen of one display device, the position, size, and position of each media are displayed. You have to manage parameters such as video type. In order to cope with a situation where the number of media to be displayed increases or conversely, there has been a problem that managing parameters relating to the respective media becomes complicated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its object is to display a plurality of contents on one screen, even if the number of media to be displayed is increased or decreased. An object of the present invention is to provide an image display method capable of facilitating the management of each of these media.

[0005]

According to the present invention, in order to achieve the above object, a receiver receives data transmitted by compounding or multiplexing a plurality of media including visual data, and In an image display method in which a display control module constituting a receiver processes the received data to display an image, the received data is separated and a plurality of original media are extracted again. The presence or absence of a window is determined. If there is no display window, a video display object is created for each of the extracted media, a predetermined attribute is given, and a reception is performed for each of the media according to the video display object. Performing output processing including data decoding, and providing the received data on which the output processing has been performed to a display unit. How to Display is provided. It should be noted that the term “media” in this specification does not mean a medium for storing and transmitting information, but includes “characters” in a broad sense,
It is used to indicate a form of information such as "graphic", "still image", "moving image", "video".

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on preferred embodiments shown in the drawings. In general, one program transmitted by digital broadcasting is composed of a plurality of media, each of the media is encoded, and the encoded media is multiplexed and transmitted. A device that receives these media receives, separates, decodes, and provides the transmitted data to a display device. In the present embodiment, in a process of simultaneously displaying a plurality of visual media in the series, in order to display the received data, for example, a visual media such as a video or a subtitle superimposed. Is created to have a window for display and its attributes.

FIG. 1 is a schematic explanatory view of an image display method according to the present invention. Here, when the display control module 30 including the connection of the program units receives the signal including the video data and the subtitle data, the display control module 30 separates the received data and extracts a plurality of media such as the original video and the subtitle superimposed again. The presence or absence of a display window is determined for each medium. When there is no display window, a video display window, a video display object 40 and a subtitle display object 50 having attributes such as a position, a size, and a display language are separately generated, and according to these video display objects. An output process including decoding of received data is executed for each medium and provided to display means.

As described above, the display control module 30 allows the video display object 40 and the subtitle display object 50
Once is generated, it becomes possible to generate a window for display in the object and set various attributes according to the media. In this case, in the subtitle window, all parts other than the subtitle superimposed are painted in a transparent color, so that the video is not hidden even when displayed over the video window. In this way, by overlaying the subtitle windows of the same size on the video window, both are presented at the same time. Even if the received data changes every moment, the corresponding processing is performed in each object, so that the program does not become complicated for the processing part of other media and the reliability can be improved. .

FIG. 2 is a block diagram showing a hardware configuration of the receiver 10 for implementing the above-described image display method. The receiver 10 includes a radio signal input terminal 2 for connecting an antenna 1 to input a radio signal, an audio signal output terminal 3 for supplying an audio signal to a speaker (not shown), and a video signal to a display device (not shown). Video signal output terminal 4 for supplying
And

As an internal configuration of the receiver 10, first, an arithmetic processing unit (hereinafter abbreviated as CPU) 11, a ROM 1
2, a RAM 13 and a remote control signal input / output unit (denoted as remote control I / O in the figure) 14 are connected to a shared bus 15. Among them, the ROM 12 previously writes a control procedure and fixed data necessary for the arithmetic processing of the CPU 11, and provides the data to the CPU 11 as necessary.
The RAM 13 is used as a working area in arithmetic processing of the CPU 11 or an input / output buffer.
The remote control signal input / output unit 14 transmits and receives signals to and from a remote control device (not shown). For example, the remote control signal input / output unit 14 inputs a selection of a video type and a set value of a video parameter.

On the other hand, a well-known tuner 16 for channel selection is connected to the radio signal input terminal 2, and from this tuner 16, data transmitted by combining or multiplexing a plurality of media is selected, and a digital demodulator is selected. 17 is added. The digital demodulator 17 converts the data into a digital signal and adds the digital signal to the demultiplexer 18. The demultiplexing device 18 separates the received data added thereto, extracts a plurality of media such as the original video and subtitles again, creates a video display object for each of the extracted media, and A process for giving an attribute such as a display window is performed, and the audio data is added to the audio decoding unit 19 and the video data is added to the video decoding unit 20.
The audio decoder 19 decodes the audio data and supplies it to an audio output device such as a speaker via the audio signal output terminal 3. The video decoding unit 20 executes video output processing including video data decoding. The data subjected to the video output processing is synthesized by the synthesizing unit 21 and the video signal output terminal 4
Via the display device.

The above-described tuner 16, digital demodulator 17, demultiplexer 18, audio decoder 19, video decoder 20, and synthesizer 21 are connected to the shared bus 15 and are respectively operated in accordance with the program units written in the ROM 12. Each function is executed according to an instruction from the CPU 11.

Next, a specific processing procedure of the CPU 11 related to the image display method according to the present invention will be described with reference to FIG. In the first step 101, the remote control signal input / output unit 14
The tuner 16 is operated to select a channel (channel) in accordance with a channel selection command input through the, and then, in step 102, a program of the selected channel is received and converted into a digital signal by the digital demodulator 17. The multiplexed or multiplexed transmitted data is added to the demultiplexer 18. Then, it causes the demultiplexer 18 to execute the following processing.

That is, in step 103, the received data is separated, and in step 104, display data such as the original video and subtitles are extracted. Here, it is assumed that the extracted data is video data and subtitle data. Of these, for video data, the presence or absence of a display window is determined in step 105, and if there is a display window, step
The process proceeds to step 108, but if there is no display window, an image display object is created in step 106, and an image display window is created in step 107.
Proceed to step 8. At step 108, it is determined via the remote control signal input / output section 14 whether or not the display parameter has been changed. If so, a new display parameter is set at step 109.

If it is determined that there is no change in the display parameters, or if the change and setting of the display parameters have been completed, the video decoding unit
In step 111, the synthesizing section 21 is operated to output a video signal to be displayed on a window. On the other hand, regarding the subtitle data extracted in step 104,
The processing exactly the same as the processing of 111 is performed in steps 112 to 118. Thereafter, until the selection of the channel performed through the remote control signal input / output unit 14 is completed, step 102 is performed.
To 118 are repeated.

By performing the above-described processing, the image display method outlined with reference to FIG. 1, that is, when a signal including video data and subtitle data is received, the original video or subtitle super If there is no display window, a video display object 40 and a subtitle display object 50 are created, and an attribute such as a video display window is provided. An output process including decoding of received data is executed.

In the above-described embodiment, a plurality of media are data transmitted by combining or multiplexing "video data" and "caption data". However, the present invention is not limited to this. Rather, two or more visual data, including "still image data" and "graphics data", can be applied to most of the composited or multiplexed signals.

[0018]

As is apparent from the above description, according to the present invention, when displaying a plurality of contents on one screen, even if the number of media to be displayed is increased or decreased, each of these media is displayed. Can be easily managed.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory diagram of an image display method according to the present invention.

FIG. 2 is a block diagram illustrating a hardware configuration of a receiver that performs the image display method illustrated in FIG.

FIG. 3 is a flowchart illustrating a specific processing procedure of an arithmetic processing unit (CPU) included in the receiver illustrated in FIG. 2;

[Explanation of symbols]

 Reference Signs List 10 receiver 11 arithmetic processing unit (CPU) 15 shared bus 16 tuner 17 digital demodulator 18 demultiplexer 19 audio decoding unit 20 video decoding unit 21 combining unit 30 display control module 40 video display object 50 subtitle display object

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 7/08 H04N 7/08 Z 7/081 F term (Reference) 5B069 AA02 BA01 BB01 KA01 5C025 BA25 CA02 CA10 CA11 CB10 DA04 5C063 AB05 CA23 DA03 5C082 AA02 BA02 BA12 BB03 BB53 CA63 DA51 DA73 MM06

Claims (1)

[Claims] 1. A receiver receives data transmitted by compounding or multiplexing a plurality of media including visual data, and a display control module constituting the receiver processes the received data to form an image. In the image display method to be displayed, the received data is separated, a plurality of original media are extracted again, the presence or absence of a display window is determined for each of the extracted media, and if there is no display window, extraction is performed. Creating a video display object for each of the media,
Giving a predetermined attribute, executing output processing including decoding of received data for each of the media in accordance with the video display object, and providing the received data on which the output processing has been executed to a display unit. Image display method.