KR101265595B1 - Method for transmitting and playing broadcast signal and apparatus thereof - Google Patents

Abstract

The present invention relates to a broadcast signal transmission method, a broadcast signal reproduction method, a broadcast signal transmission device, and a broadcast signal reception device. The broadcast signal transmission method of the present invention comprises the steps of: generating a slice image obtained by dividing a prepared image and multi-component image information on the slice image; Converting the slice image and the multi-component image information into broadcast data; And transmitting the broadcast data. According to the present invention, a slice transmission transmitted from a receiving end can be output according to a reproduction method by dividing and transmitting an image having a higher resolution than a standard transmission standard.

High resolution, image, segmentation, multiple composition

Description

Broadcast signal transmission method, broadcast signal reproduction method, broadcast signal transmission apparatus and broadcast signal reception apparatus {Method for transmitting and playing broadcast signal and apparatus

1 is a block diagram showing a data structure of a broadcast signal according to an embodiment of the present invention.

2 is an exemplary diagram illustrating an image reproduction control information field in a data structure according to an embodiment of the present invention.

3 is an exemplary diagram of a multimedia object transfer (MOT) protocol among various broadcast and communication transfer protocols according to the present invention.

4 is a block diagram showing an embodiment of a broadcast signal transmission apparatus according to the present invention.

Figure 5a is a block diagram showing an embodiment of a broadcast signal receiving apparatus according to the present invention.

5B is a block diagram illustrating an internal configuration of a broadcasting mobile communication terminal according to an embodiment of the image reproducing apparatus of the present invention.

6 (a, b, c) is an exemplary view showing the position information of the slice image according to the high resolution image segmentation according to an embodiment of the present invention.

7 is a flowchart illustrating a method for reproducing a broadcast signal in an apparatus for receiving a broadcast signal including multiple component image information according to an exemplary embodiment of the present invention.

Description of the Related Art [0002]

110: image storage unit 120: multiple configuration image generation unit

130: broadcast signal converter 140: transmitter

210: wireless communication unit 220: memory

230: multiple configuration image processing unit 240: control unit

250: display unit 310: RF receiver

320: signal modulator 330: terminal controller

340: memory 341: storing playback control information

342: Image buffer unit 350: Interface

371: multi-component image processing unit 380: display unit

The present invention relates to a broadcast signal transmission method, a broadcast signal reproduction method, a broadcast signal transmission device, and a broadcast signal reception device.

Recently, mobile information devices such as mobile phones and PDAs have become popular, and various products including digital image reproduction functions have been commercially available. In particular, the number of terminals providing real-time broadcasting services by receiving satellite DMB or terrestrial DMB broadcasting signals is increasing.

These mobile products have a problem in that they cannot interface high resolution images of 800 * 600, 1024 * 768, and 1280 * 1024, which are typical display screen resolutions. For example, terrestrial DMB can output 15 frames per second at 352 * 288 resolution, and satellite DMB can output 15 frames per second at 320 * 240 resolution.

Therefore, the image processing apparatus of such a general mobile information device cannot receive a high resolution image and interface normally.

That is, even if a high resolution image is transmitted from a broadcast transmitter, there is a problem in that the mobile terminal, which is a receiver, does not support image output.

Disclosure of Invention The present invention has been made to solve the above problems, and an object of the present invention is to provide a broadcast signal transmission apparatus, a broadcast signal transmission method, and a broadcast that can provide convenience to a side to which a broadcast signal is to be transmitted and a side to receive a broadcast signal. A signal receiving device and a broadcast signal reproducing method are provided.

Another object of the present invention is to provide a broadcast signal transmission method and a broadcast signal reproduction method for generating multi-component image information by dividing a high resolution image of a broadcast signal to be transmitted and reproducing a slice image according to a reproduction method at a receiving end. .

The broadcast signal transmission method of the present invention for achieving the above object comprises the steps of generating a slice image obtained by dividing the prepared image and the multi-component image information for the slice image; Converting the slice image and the multi-component image information into broadcast data; And transmitting the broadcast data.

A broadcast signal reproduction method of a broadcast receiving apparatus for receiving broadcast data including an image of the present invention and multiple component image information of the image for achieving the above object, the method comprising: receiving and decoding the broadcast data; Acquiring and storing the image and the multi-component image information from the decoded broadcast data; And displaying the stored image according to the reproduction method based on the obtained multi-component image information.

The broadcast signal transmission apparatus of the present invention for achieving the above object is an image storage unit for storing one or more images; A multiple configuration image generation unit dividing the stored image to generate multiple configuration image information on the divided image; A broadcast signal converter for converting the divided image and the multi-component image information into broadcast data; And a transmitter for transmitting the broadcast data.

The broadcast signal receiving apparatus of the present invention for achieving the above object comprises a receiving unit for receiving and decoding the broadcast data including the image and the multi-component image information for the image; A memory unit configured to store the decoded image and multi-component image information of the image; A controller which combines the stored images based on the multi-component image information and processes the stored images according to a reproduction method; And a display unit for outputting the processed image.

The objects, features and advantages of the present invention will be more readily understood by reference to the accompanying drawings and the following detailed description. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 is a block diagram showing a data structure of a broadcast signal according to an embodiment of the present invention.

When the broadcast signal is transmitted, reproduction information necessary for transmitting broadcast images may be inserted. In the present specification, when the broadcast images included in the broadcast signal are reproduced, the reproduction principle of the images is defined, and the reproduction principle includes segmentation information of the image, position information of the slice image, and reproduction method information.

Accordingly, the broadcast signal transmission apparatus generates a slice image by dividing an image having a higher resolution than a standard transmission standard and transmits the multi-component image information as broadcast data so that the broadcast signal reception apparatus reproduces the broadcast images in various ways. .

The header field 11 is transmitted including file identification and additional information indicating the type of broadcast data to be transmitted. The multiple configuration image field 12 indicates that an image transmitted to a broadcast signal is multiple configuration image information. At this time, the multi-component image field 12 is transmitted including the degree of division and the position information of the slice image for the slice image generated by dividing a higher resolution image than the standard transmission standard. The multi-constituent image reproduction field 13 is transmitted including the reproduction method information of the transmitted slice image. In this case, the image reproduction method may be reproduction order information and scene change information of the slice image. The serial number field 14 indicates the serial number of an image belonging to the image group or the serial number between image groups when the transmitted image is transmitted to the image group. The image correlation field 15 includes information representing the semantic structures of the transmitted images.

2 is an exemplary diagram illustrating an image reproduction control information field in a data structure according to an embodiment of the present invention.

In the image reproduction control information field, the multi-component image flag (a) indicates that the image to be transmitted is a slice image of an image having a higher resolution than the standard transmission standard, and transmits the multi-component image information. The multi-constructed image segmentation level (b) is transmitted including the degree of dividing a higher resolution image than the standard transmission standard for transmission and the position information of the slice image accordingly. The degree of division of the slice image may be represented by two positions of a row and a column. In one example according to the invention, it can be represented as (1 x 1): no division, (2 x 2): 4 divisions, (4 x 4): 16 divisions, etc., and according to the intention of the transmitting end (1 x 3) The division represents information obtained by dividing an image to be transmitted into one row and three columns. In this case, the position information of the image may be represented by two digits (R x C) of a row and a column according to the degree of division of the slice image. The multi-component image reproduction information (d) is transmitted including the reproduction method information of the slice image. The reproduction method information defines a display method of an image according to a reproduction order or scene change information of a transmitted slice image.

In addition, the broadcast signal data structure according to the present invention includes information indicating the number of images of one group, information (c) indicating the serial number in each group, and information (e) indicating the serial number of each group when the image data field is provided. It consists of fields that contain.

The multiple configuration image according to the present invention can be used in a broadcast system or a communication system for transmitting a broadcast signal. At this time, the multi-constituent image is transmitted by the image transmission protocol. The broadcast system and the communication system use various protocols capable of transmitting images, and may provide data fields as shown in FIG. 2 in the reserved area of the above protocol. And it can be used to transmit the playback control information for the broadcast object.

In order to implement the broadcast signal transmission method and the broadcast signal reproduction method according to the present invention in more detail, it will be described with reference to the Multimedia Object Transfer (MOT) protocol.

3 is an exemplary diagram of a multimedia object transfer (MOT) protocol among various broadcast and communication transfer protocols according to the present invention.

<table 1> and <table 2> are diagrams illustrating a multimedia object transfer (MOT) protocol among various broadcast and communication transfer protocols. An example of transmitting reproduction control information using the MOT protocol will be described with reference to FIG. 3.

<table 2> is a diagram showing some data fields of a multimedia audio broadcasting (DAB) MOT protocol of EN 301 234 V2.1.1. Multiple configuration image information according to the present invention may be defined in an unspecified area of the MOT protocol.

In order to expand the broadcast signal transmission method and the broadcast signal reproduction method according to the present invention, it is more preferable to define a variable data field among unspecified areas of the MOT protocol.

<table 2> shows that a data structure according to the present invention can be inserted into a Content Name field having a variable length. <table 1> is a property indicator for the Content Name, which means that the Content Name can be filled with Arabic numerals.

Therefore, as shown in the example illustrated in FIG. 2, when the multi-configuration image field value is inserted into the Content Name shown in FIG. 2 and the multi-configuration image information is transmitted, the broadcast image object may be reproduced according to the reproduction method.

As described above, the data structure of the present invention can be transmitted by other broadcast transmission protocols or communication transmission protocols in addition to the MOT protocol.

4 is a block diagram showing an embodiment of a broadcast signal transmission apparatus according to the present invention.

An embodiment of the broadcast signal transmission apparatus according to the present invention includes an image storage unit 110, a multi-component image generation unit 120, a broadcast signal converter 130, a transmitter 140. Referring to FIG. 4, an operation of an embodiment of a broadcast signal transmission apparatus according to the present invention will be described.

The image storage unit 110 may store images that are broadcast objects to be transmitted. Images prepared according to the present invention may be prepared with a higher resolution image than a standard transmission standard. The image storage unit 110 may receive and store an image generated externally and output it, or may generate and temporarily store an image to be transmitted and output the image.

The multi-constituent image generation unit 120 generates a slice image by dividing a high resolution image for transmission. Accordingly, when the broadcast signal reception apparatus for the transmitted slice image is reproduced, the multi-component image information may be generated. The multi-component image information according to the present invention includes the degree of division of the generated slice image, the position information of the slice image, and the reproduction method information. In this case, the position information of the slice image may be represented by a row and a column (R x C) according to the division. In addition, the image reproducing method information is provided as a reproduction order or scene change information of the transmitted slice image, and the receiving end processes and displays the image based on the information.

Therefore, the multi-configuration image information generated by the multi-configuration image generator 120 may include the multi-configuration image field and the image data fields illustrated in FIG. 2.

The broadcast signal converter 130 converts the slice image and the multi-component image information split from the multi-component image generator 120 into broadcast data. The broadcast data is packetized and output according to the principle of transmitting the broadcast signal.

The transmitter 140 transmits the broadcast data generated by the broadcast signal converter 130 through the broadcast network.

Accordingly, the apparatus for transmitting broadcast signals generates multiple component image information by dividing the images having a higher resolution than the standard transmission standard, so that the receiving end reproduces the image transmitted as the panorama image and the multi vision image based on the information.

5A is a block diagram showing an embodiment of a broadcast signal receiving apparatus according to the present invention.

The RF receiver 210 receives a broadcast signal, demodulates the signal, and outputs the demodulated signal. In addition, the broadcast data is decoded from the demodulated broadcast signal, and the transmitted broadcast image and the multi-component image information are separated and output.

The memory 220 stores broadcast data output from the RF receiver 210. Stores multiple component image information of the decoded broadcast image according to the present invention. Also, the decoded slice images are stored. At this time, the slice images are stored in a plurality of buffers.

The multiple configuration image processor 231 processes the images stored in the memory 220 based on the multiple configuration image information. At this time, by combining the position information of the slice image according to the division level, the image processing according to the image reproduction order or scene change according to the reproduction method is processed.

The controller 230 may output a signal for controlling each component of the broadcast signal receiving apparatus. Therefore, the multi-component image processing unit 231 and the control unit may be one component.

The display unit 240 displays the slice images output from the multi-component image processing unit 231 on the screen according to the reproduction method. In addition, when the multi-component image to be transmitted is received as a stereoscopic image signal, the display unit 240 forms a stereoscopic image according to a reproduction method and displays the stereoscopic image on the screen.

5B is a block diagram illustrating an internal configuration of a broadcasting mobile communication terminal according to an embodiment of the image reproducing apparatus of the present invention.

The RF receiver 310 receives a broadcast signal transmitted through a broadcast network in a transport stream (TS) packet form. The broadcast signal according to the present invention includes a slice image and multiple component image information of the corresponding image.

The signal modulator 320 decodes the TS packet of the received broadcast signal and converts the TS packet into data that can be processed by the terminal system. In this case, the slice image, the split information, the image position information, and the multi-component image information including the reproduction method are separated and output.

The memory unit 340 stores the operating software of the overall mobile communication terminal and includes a reproduction control information storage 341 and an image buffer unit 342 according to the present invention. The reproduction control information storage 341 acquires and stores the degree of division of the slice image, the position information of the slice image, and the reproduction method information, which are multi-component image information obtained from the received broadcast data. The slice image corresponding to the positional information according to the degree of division is read by the called control signal. The image buffer unit 342 stores slice images from broadcast data and stores the slice images in the form of images such as 2D, 3D, 2D group, and 3D group according to the image reproduction dimension. The image buffer unit 342 is composed of a plurality of buffers.

The controller 330 controls a series of signal processing for receiving and reproducing a broadcast signal. The slice image transmitted from the broadcast signal according to the present invention and the multi-component image information are acquired and combined with the slice image based on the positional information according to the playback order. When a function such as a change is selected, command data corresponding thereto is generated. A broadcast service function according to the present invention is turned on / off or a channel change or a broadcast signal reproduction signal is input. The data bus is a data input / output transmission path between two devices such as the memory 340 and the controller 330 to determine a data transmission speed.

The sound module 261 includes various sound sources to adjust the tone and volume of the voice signal input through the microphone. The sound processor 362 processes the audio signal from the received broadcast data and outputs the audio signal through the speaker.

The multiplex image processing unit 371 performs a scene change according to a reproduction method and outputs the combined slice images. In addition, when a slice image according to the present invention is transmitted as two slice images according to both eyes and reproduced as a stereoscopic image, the pixels of two pairs of left and right images are processed to correspond to the switching panel. The display 380 displays the converted slice images output from the multi-component image processing unit 371 on the screen. In this case, when the slice image to be reproduced is two images according to both eyes, the display unit 380 drives the switching panel to form a stereoscopic image.

The camera module 351 includes an external camera connected to a mobile communication terminal and a built-in camera installed at a predetermined portion of the mobile communication terminal. The external memory 352 incorporates a memory card module to recognize the detachment of the external memory to load data from the external memory. The key input unit 353 includes a plurality of text keys, numeric keys, function keys, and the like for generating driving signals and input signals from a user.

6 (a, b, c) is an exemplary view showing the position information of the slice image according to the high resolution image segmentation according to an embodiment of the present invention.

Images or graphics prepared by the present invention have a higher resolution and file format than standard transmission standards. Therefore, the present invention transmits a slice image obtained by dividing the image so that the transmitted image is reproduced at an optimal resolution at the receiving end. At this time, the position information and the reproduction method information of the slice image are provided to the receiving end so that the images are output in the order intended by the transmitting end during reproduction. By transmitting sliced images at the transmitting end to optimize the image at the receiving end, the image quality can be maintained at high resolution and the file size can be reduced, thereby reducing download time during transmission.

In this optimization process, the slice image may be displayed in a panorama image or a multi-vision format to minimize image distortion or incompleteness. Image file formats can be either the Graphic Interchange Format (GIF) file format or the Joint Photographic Experts Group (JPEG) file format. GIF files represent up to 256 colors and are suitable for small color images. JPEG files can represent tens of thousands of colors and are used for precise graphical representations such as photographs. However, in order to reduce the file size, the information of the original image may be lost during the compression process.

6A is a slice image obtained by dividing a high resolution image (1 × 3) according to an embodiment of the present invention and position information of the corresponding image. The prepared image can be divided and transmitted in the left and right directions.

6B illustrates a slice image obtained by dividing a high resolution image (3 × 1) according to another embodiment of the present invention and position information of the corresponding image. High resolution images can be divided and transmitted in the vertical direction.

6C illustrates a slice image obtained by dividing a high resolution image (4 × 4) according to an embodiment of the present invention and position information of the corresponding image. The image (a) of the 16 divided slice images has position information of 34.

Based on the position information of the slice image, the image to be reproduced is combined and processed to be displayed according to the reproduction method.

Digital images consist of a set of squares of a single color called pixels. Screen resolution is the number of pixels the screen or monitor can accommodate. For example, a screen resolution of 640 * 480 consists of 640 pixels horizontally and 480 pixels vertically. Common screen resolutions are 800 * 600, 1024 * 768, and 1280 * 1024. Digital images are bitmap images that are converted into binary code, a computer-acceptable format. Digital image means a pixel image. The quality of a digital image is determined by the resolution of the pixel.

That is, the image resolution means the total number of pixels constituting one image and is used as one of the units representing the size of the image. Low-resolution images appear stepped, contours of the shape are not clear, textures do not appear accurately, and there are periodic patterns. But the memory occupies a small amount. High resolution images can be rendered with subtle textures and can be used from 2 to 24 bits per pixel. For example, if you calculate the size of an image file that is 1024 * 768 and 256 colors, it will be 1024 * 768 * 8 = 6,291,456 bits. This high resolution image occupies a large amount of memory, and the image interface is impossible at the resolution of the terminal liquid crystal which reproduces an image of 320 * 240 pixels which is a QVGA (Quarter Video Graphics Array). Therefore, in the 2.2 "inch LCD specification (for DMB terminal) of QVGA (320 * 240) resolution which is 1/4 size of general VGA resolution according to the present invention, the high resolution image slice transmitted according to the present invention can be converted into panorama image and multi vision image. The present invention proposes a reproducing method based on multi-component image information to enable reproduction.

7 is a flowchart illustrating a method of reproducing a broadcast signal in an apparatus for receiving a broadcast signal including multiple component image information according to an exemplary embodiment of the present invention.

The broadcast signal packet including the slice image and the multi-component image information divided through the broadcast network is received (S100). In operation S101, the slice image and the multi component image information are extracted from the image transmission field of the received broadcast signal. The 2D image or the 3D image according to the reproduction mode of the extracted slice images is stored (S102). From the extracted multi-component image information, the degree of image division, position information of the corresponding slice image, and reproduction method information are detected (S103). The location information of the slice image according to the detected division level is combined (S104). The combined slice images are processed according to the reproduction order or scene change information according to the reproduction method (S106). The slice image according to the reproduction order or the scene change process is displayed (S106). If the multi-component split field is not detected, the received image is reproduced as it is (S107).

The present invention is not limited to the above-described embodiments and various changes and modifications may be made by those skilled in the art.

The effects of the broadcast signal transmission method, the broadcast signal reproduction method, the broadcast signal transmission device, and the broadcast signal reception device according to the present invention described above are as follows.

First, according to the present invention, a broadcast signal transmission method, a broadcast signal reproduction method, a broadcast signal transmission device, and a broadcast signal reception device can provide convenience to both the broadcast signal transmission side and the broadcast signal reception. .

Second, according to the broadcast signal transmission method and broadcast signal reproduction method according to the present invention, multi-resolution image information may be generated by dividing a high resolution image of a broadcast signal to be transmitted, and a receiver may reproduce the slice image processed according to the reproduction method based on the same. have.

Claims (21)

Determining whether the prepared image is a higher resolution image than a transmission standard for multimedia object transfer (MOT) broadcast data; If the prepared image is a higher resolution image than the MOT transmission standard, dividing the prepared image into two or more slice images; Generating multi-component image information including division information indicating a degree of division of the divided slice image, position information of each of the divided slice images of the prepared image, and information on a method of reproducing the divided slice image; Converting the slice image and the multi-component image information into the MOT broadcast data; And And transmitting the converted MOT broadcast data. delete delete The method of claim 1, And the slice information of the slice image and the position information of the slice image are displayed as matrix information of rows and columns. The method of claim 1, The reproduction method information includes at least one of a reproduction order and scene change information of the slice image. delete Receiving and decoding a multimedia object transfer (MOT) broadcast data including a slice image obtained by dividing two or more original images and multiple component image information of the divided slice image; Obtaining and storing the slice image and the multi-component image information from the decoded MOT broadcast data; And And reproducing and displaying the stored slice image based on the obtained multi-component image information. The multi-component image information includes division information indicating a degree of division of the divided slice image, position information of each of the divided slice images with respect to the original image, and information on a method of reproducing the divided slice images, And the displaying step reproduces and displays the stored slice image based on the segmentation information, the position information, and the reproduction method information. 8. The method of claim 7, And the original image is an image having a higher resolution than the MOT broadcast data transmission standard. delete 8. The method of claim 7, The display step, Combining the stored slice images based on the partition information and the location information; And And processing and displaying the combined slice image by the reproduction method. The method of claim 10, The reproduction method includes reproduction order information and scene change information on the combined slice image, And wherein said displaying step processes and displays said combined slice image by said reproduction order information and said scene change information. delete An image storage unit storing one or more images; If the stored image is an image having a higher resolution than that of a multimedia object transfer (MOT) broadcast data, the divided image is divided into two or more slice images, and the divided information indicating the degree of division of the divided slice image and A multi-component image generating unit generating multi-component image information including position information of each of the divided slice images and information on a method of reproducing the divided slice image with respect to the stored image; A broadcast signal converter for converting the slice image and the multi-component image information into the MOT broadcast data; And And a transmitter for transmitting the converted MOT broadcast data. 14. The method of claim 13, And the image storing unit stores an image having a higher resolution than a standard transmission standard. delete 14. The method of claim 13, And the reproduction method information includes at least one of a reproduction order of the slice image and scene change information. delete A receiver configured to receive and decode multimedia object transfer (MOT) broadcast data including a slice image obtained by dividing two or more original images and multiple component image information of the divided slice image; A memory unit for obtaining and storing the slice image and the multi-component image information from the decoded MOT broadcast data; A controller configured to combine the stored slice images based on the obtained multiple component image information and process the stored slice images according to a reproduction method; And And a display unit configured to output the processed slice image. The multi-component image information includes division information indicating a degree of division of the divided slice image, position information of each of the divided slice images with respect to the original image, and information on a method of reproducing the divided slice images, And the control unit controls to reproduce and display the stored slice image based on the split information, the position information, and the reproduction method information. 19. The method of claim 18, And the control unit combines the slice images according to the segmentation information and the location information. 19. The method of claim 18, The reproduction method includes reproduction order information and scene change information on the slice image, And the controller controls the slice image to be processed and displayed by the reproduction order information and the scene change information. 19. The method of claim 18, The stored image is a broadcast signal receiving apparatus, characterized in that the image having a higher resolution than the MOT broadcast data transmission standard.

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