KR100431790B1 - Method for generating a broadcasting information in digital broadcasting receiver - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of generating broadcast information in a digital broadcast receiver. In a digital broadcast receiver such as a set-top box (STB), a service name of a digital broadcast channel or a variety of broadcast programs are requested when a broadcast information is displayed. The OSD image of the Event Name and Text information of the video is divided into a plurality of images having a predetermined size using a window of a predetermined size, and the screen of the connected television is connected. By continuously displaying through a display method such as sliding or scrolling, the OSD screen of a limited size television can be efficiently used, so that a user can easily recognize various broadcasting information. In addition, it is a very useful invention that the user does not have to perform a separate manual operation.

Description

Method for generating a broadcasting information in digital broadcasting receiver

According to the present invention, in a digital broadcast receiver such as a set top box (STB), a service name of a digital broadcast channel or an event name and text information of a broadcast program may be used. A method of generating broadcast information in a digital broadcast receiver for outputting and displaying an OSD image of various broadcast information through a screen of a connected television.

Generally, digital broadcasting includes digital satellite broadcasting, digital cable broadcasting, and digital terrestrial broadcasting. In a digital broadcasting receiver such as a set-top box (STB) for receiving the digital broadcasting signal, a digital broadcasting signal of an MPEG transport stream is received. After receiving the signal, the video signal and audio signal are decoded and processed, and the video and audio signals are transmitted to a general television or the like, so that a user can watch a desired broadcast program.

For example, as shown in FIG. 1, in order to receive and signal digital satellite broadcasting in the digital broadcast receiver, a satellite antenna 200 for receiving a digital broadcast signal transmitted through the broadcast satellite 100 is connected. The satellite antenna 200 includes a Low Noise Blockdown (LBN) converter for converting and amplifying a digital satellite broadcast signal in the 3.5 GHz to 12 GHz band to an intermediate frequency in the 1 GHz band and reducing noise. It is composed.

Accordingly, since the digital broadcast receiver 300 receives the intermediate frequency of the 1 GHz band where the noise is reduced through the LNB converter, the digital broadcast signal of the MPEG transport stream is converted into the original video and audio signal as described above. After reconstruction to a signal and signal processing, the video and audio signals can be transmitted and output to a general television or the like.

On the other hand, various broadcast information for the digital broadcast signal received and signal processed through the above process, the output is displayed on the OSD (OSD) screen of the television 400 according to a user request, for example For example, as shown in FIG. 2, the OSD screen of the television includes various service information such as a service name of a broadcast channel selected by a user, an event name for a broadcast program received through the service, and an event text. Output is displayed.

In this case, in the event text, detailed information about characters appearing in the corresponding broadcast program may be outputted and displayed in text form. The event name and text information are received in the broadcast stream, whereas the service name is displayed. The broadcast information corresponding to is stored in the memory together with the tuning data when performing the automatic channel setting operation.

Accordingly, the user can easily check various broadcast information such as the service name of the broadcasting channel, the title of the broadcast program, and the characters of the broadcasting channel that he or she selects from the broadcast information displayed through the OS screen of the television 400. Will be.

However, as shown in FIG. 2, the broadcast information displayed separately through the OSD screen of the television having a limited size, for example, the size of the bitmap corresponding to the service name of the broadcast channel is divided in advance. If the size of the specified OS display area is exceeded, a problem arises in that the service name cannot be displayed all at once.

Accordingly, as a method for solving the above problems, a method of reducing the number of characters displayed on the OSD screen or displaying a small font size, or outputting and displaying one piece of text information at a predetermined time interval at a designated position The method and the method of displaying only the text specifically selected by the user are used or suggested.

However, when the number of letters or the letter size is reduced or reduced as described above, it is difficult for the user to easily recognize the broadcast information, and when displaying one text information at a predetermined time interval, it is easy for the user to miss the broadcast information. In addition, when only the text selected by the user is displayed on the screen, the user must perform a separate manual operation.

Accordingly, the present invention was created to solve the above problems, and in a digital broadcast receiver such as a set-top box (STB), a broadcast name such as a service name of a digital broadcast channel, or an event name and texts of a broadcast program, In the digital broadcast receiver, the OSD image is divided into a plurality of images having a predetermined size and continuously displayed in various display methods such as sliding or scrolling through a screen of a connected television. It is to provide a method for generating broadcast information, which is its purpose.

1 illustrates a state in which a general digital broadcast receiver is connected to a satellite antenna and a television, respectively.

FIG. 2 illustrates digital broadcasting information displayed through an OSD screen of a general television.

3 illustrates a configuration of a digital broadcast receiver to which a broadcast information generating method according to the present invention is applied.

4A and 4B illustrate an operation flowchart of a method for generating broadcast information in a digital broadcast receiver according to the present invention.

FIG. 5 illustrates temporary bitmaps for service names sequentially generated by a method of generating broadcast information in a digital broadcast receiver according to the present invention.

6 illustrates broadcast information displayed on a screen by a method of generating broadcast information in a digital broadcast receiver according to the present invention.

※ Explanation of code for main part of drawing

100: broadcast satellite 200: satellite antenna

300: digital broadcast receiver 400: television

30: Tuner part 31: Demux

32: audio buffer 33: video buffer

34: data buffer 35: MPEG decoder

36: signal synthesizing unit 37: control unit

38: OSD generator 39: memory

Broadcast information generation method in the digital broadcast receiver according to the present invention for achieving the above object, while outputting the information on the broadcast channel or the broadcast program through the OSD screen of the television, a plurality of the OSD screen Dividing into regions; Dividing and generating the original image generated corresponding to the information allocated to the corresponding area into a plurality of temporary images of a predetermined size in the corresponding area; And three steps of sequentially outputting the plurality of divided temporary images to be sequentially displayed in a corresponding region of the OS screen.

Hereinafter, a preferred embodiment of a method for generating broadcast information in a digital broadcast receiver according to the present invention will be described in detail with reference to the accompanying drawings.

3 shows a configuration of a digital broadcast receiver to which the broadcast information generating method according to the present invention is applied. A tuner unit 30 for tuning a digital broadcast channel to a digital broadcast receiver such as a set top box (STB) is shown. And a demux 31 for parsing an MPEG transport stream received through respective services multiplexed on the broadcast channel into audio, video and data, and for temporarily storing the audio, video and data. An audio buffer 31, a video buffer 33, a data buffer 34, and an MPEG decoder 35 for decoding the temporarily stored audio, video and data and restoring and outputting the original audio and video signals are provided. Consist of included.

In addition, the digital broadcast receiver, an OSD generation unit for generating and outputting an OS video, for example, a bitmap, corresponding to a service name of the digital broadcast channel, an event name and text information of a broadcast program. (38), a control unit 26 for operation control of the respective constituent means, and a memory 39 for storing data necessary for the operation control.

Meanwhile, the controller 37 controls the tuner 30 and the demux 31 when performing the automatic channel setting operation upon system initialization of the digital broadcast receiver or by a user's key input. By sequentially scanning the digital broadcast channel and each service, service information (SI) information for each service temporarily stored in the data buffer 34 is stored together with the tuning data of the corresponding broadcast channel and the service. In addition, the memory 39 is stored in association.

Subsequently, when the 'broadcast information display' is requested by a user's key input, the OSD generator 38 is controlled to correspond to a service name among SI information stored in association with the tuning data in the memory 39. The original ODS video, for example, an original bitmap for notifying a service name of a broadcast channel is generated.

In addition, the broadcast information included in the broadcast stream received through the corresponding service, for example, event name and text information about the broadcast program is read, and each bitmap corresponding thereto is generated and output.

On the other hand, the OSD generation unit 38 compares the size of the generated bitmaps with the size of the OSD display area allocated to display the bitmaps respectively, and as a result of the comparison, the bitmap If the size exceeds the size of the OS display area, a window having a predetermined size corresponding to the OS display area is automatically generated, and the original bitmap is divided into a plurality of temporary bitmaps. .

The divided bitmaps are output and displayed through various display methods such as a sliding method or a scrolling method through the OSD screen of the television.

4A and 4B illustrate an operation flowchart of a method for generating broadcast information in a digital broadcast receiver according to the present invention. As described above, the controller 37 performs, for example, an automatic channel setting operation. In this case, the tuner unit 30 and the demux 31 are controlled to operate, and the digital broadcast channels are sequentially tuned to select respective services for respective channels (S10). In this case, the data buffer ( In operation S11, the SI information temporarily stored in 34 is searched for, and together with the tuning data for selecting and tuning each broadcasting channel and service (S11).

Subsequently, when the above automatic channel setting operation is completed (S12), the controller 37 checks whether any one broadcast channel is selected and designated by the user (S13), and is stored in the memory 39. A conventional method of reading tuning data, that is, tuning data corresponding to a broadcast channel selected by a user, tuning a broadcast channel and a service, and restoring and outputting a broadcast stream received through the service to original audio and video signals. The signal processing operation is performed (S14).

On the other hand, if the 'broadcast information display' is requested by the user during the signal processing operation (S15), the SI information stored in association with the tuning data of the corresponding service, for example, information corresponding to the service name is searched out ( S16).

In addition, the operation of the OSD generation unit 38 is controlled. At this time, the OSD generation unit 38 checks the service name retrieved from the memory and generates an original bitmap corresponding thereto (S17). Compare and determine whether the size of the generated original bitmap exceeds a preset reference size, for example, the size of the region where the bitmap corresponding to the service name is displayed in the OSD screen of the connected TV. (S18).

Subsequently, when the size of the original bitmap corresponding to the service name exceeds the reference size, the OSD generation unit 38 automatically opens a window matching the reference size, as shown in FIG. 5. In operation S19, the original bitmap is divided into a plurality of temporary bitmaps and generated sequentially.

Meanwhile, the broadcast information included in the broadcast stream received through the corresponding service, for example, event name and text information about a broadcast program, is searched and confirmed through an interface with the control unit, and then a bitmap corresponding thereto is generated ( S20).

In this case, the bitmap of the event name and the text information generated as described above and the temporary bitmap sequentially generated by the window are output together through the OSD screen of the connected connected TV (S21). The temporary bitmap partitioned and generated in the window may be an original bitmap corresponding to the service name or a bitmap corresponding to the event name and text information.

In addition, the plurality of temporary bitmaps sequentially generated by the window are temporarily stored in the memory 39 and then output and displayed together with the bitmap of the event name and the text information, or sequentially by the window. Each of the temporary bitmaps generated by division may be output and displayed together with the bitmap of the event name and text information in real time without being temporarily stored in the memory 39.

As shown in FIG. 6, the temporary bitmaps are sequentially displayed while being continuously moved in a horizontal direction in a predetermined region for outputting and displaying a service name of an OSD screen of the television. It may be output in a display manner, or may be output in a scroll manner that is sequentially displayed while continuously moving in the vertical direction.

On the other hand, if the size of the original bitmap corresponding to the service name does not exceed the reference size, the OSD generator 38, broadcast information contained in the broadcast stream received through the service, for example For example, after retrieving and confirming event name and text information about a broadcast program through an interface with the controller, a bitmap corresponding thereto is generated (S22), and a bitmap of the event name and text information generated as described above; The original bitmap corresponding to the service name is output together through the connected OS screen of the connected TV (S23).

Subsequently, during the output display of the OS screen for the broadcast information as described above, if a predetermined time elapses in advance (S24) or when the user requests 'undisplay the broadcast information', the controller 37 Operation of the OSD generating unit 38 is terminated to terminate the display of broadcast information.

For reference, an operation of dividing and generating a temporary bitmap using a window as described above and outputting the sliding bit in a sliding and scrolling manner corresponds to the event name and text information as well as the original bitmap corresponding to the service name. Applicable to bitmaps.

Or more, preferred embodiments of the present invention described above, for the purpose of illustration, those skilled in the art, within the technical spirit and the technical scope of the present invention disclosed in the appended claims below, to further improve various other embodiments Changes, substitutions or additions will be possible.

The broadcast information generating method of the digital broadcast receiver according to the present invention constructed and constructed as described above may include a service name of a digital broadcast channel in a digital broadcast receiver such as a set-top box (STB), when a broadcast information display request is made. Alternatively, the OSD image of event names and text information of various broadcasting programs is divided into a plurality of images having a predetermined size by using a window of a predetermined size, and connected. By continuously displaying through a screen of a TV, such as sliding or scrolling, the OSD screen of a limited size television can be efficiently used, so that a user can easily access various broadcast information. Very useful invention that can be seen and also does not require a user manual operation Will.

Claims (7)

Displaying a service name of a broadcast channel, an event name or text information of a broadcast program through an OSD screen of a television, and dividing the OSD screen into a plurality of areas; Comparing a size of an original image generated corresponding to the information allocated to the plurality of divided corresponding regions with a size of each corresponding region; A step of dividing the original image into a plurality of temporary images suitable for the size of the corresponding region only when the size of the original image exceeds the size of the corresponding region as a result of the comparison; And And sequentially outputting the plurality of divided temporary images sequentially and sequentially displaying the divided temporary images in a scroll or sliding manner on a corresponding region of the OSD screen. delete The method of claim 1, In step 3, when the size of the original image generated corresponding to the information allocated to the plurality of divided regions exceeds the size of the preset region, the information is divided into a plurality of temporary images having a predetermined size. In addition to storing in a plurality of storage space, In the step 4, the method of generating broadcast information in a digital broadcast receiver characterized in that the plurality of divided temporary images are read out from the storage space and sequentially displayed in the corresponding area of the OS screen. . The method of claim 1, In the third step, when the size of the original image generated corresponding to the information allocated to the divided plurality of corresponding regions exceeds the size of the preset region, the information is stored in a single storage space having a predetermined size according to time. In addition to generating a plurality of temporary images each, In the step 4, the broadcast information generation method of the digital broadcast receiver, characterized in that for sequentially outputting the plurality of the divided video to be displayed in the corresponding region of the OS screen in real time. delete delete delete