KR20100019769A - Channel signal receiving/transmitting method for alloting of variable bandwith and receiver - Google Patents

Abstract

PURPOSE: A channel signal transmitting/receiving method for allocating a variable band and a receiving terminal thereof are provided to allocate a varied band to each broadcast signal and tune a corresponding broadcast signal by checking a variably allocated band for each broadcast signal through channel programming information, thereby reducing waste of the entire frequency band. CONSTITUTION: A channel signal transmitting/receiving method comprises the following steps. Transmitting band information and program information of a broadcast signal corresponding to a variably allocated frequency band are generated(201). Channel programming information is generated(202). The generated channel programming information is broadcast to the selected band(203). A receiving terminal receives the channel programming information from the selected band(204) and tunes the transmitting band information corresponding to selection input of a user for the program information(205,206).

Description

CHANNEL SIGNAL RECEIVING / TRANSMITTING METHOD FOR ALLOTING OF VARIABLE BANDWITH AND RECEIVER}

The present invention relates to a channel signal transmission and reception method for variable band allocation and a receiving terminal.

With the rapid development in the fields of electricity, electronics, computer, communication, etc., the recent broadcasting field is changing the transmission and reception technology of the broadcast signal from analog (digital) to digital (digital).

In particular, unlike analog, which requires a relatively large frequency band to transmit a broadcast signal, the digital method has an advantage in that a large amount of information can be quickly transmitted in a small frequency band. Despite the advantages of digital, conventional digital broadcast signal transmission / reception techniques waste limited frequency resources by transmitting broadcast signals with fixed bandwidths for each channel.

In the analog system, a broadcast signal receiver such as a TV fixedly allocates a frequency band for each channel at 6 MHz, and the receiver may search for each fixed channel to receive a broadcast signal. However, the analog fixed channel allocation is maintained in the digital transmission and reception technology. For example, in the conventional transmission and reception technique, if a frequency band of about 6 Mhz is allocated to transmit a specific broadcast signal in an analog manner, there is a problem in that the frequency band of 6 Mhz is equally allocated even when transmitting a 2 Mhz broadcast signal in a compressed digital manner. . Therefore, conventional broadcasting techniques using fixed channels cause a serious problem of wasting limited frequency bands, and these problems can become an increasingly serious problem as digital modulation schemes are advanced day by day.

As a result, in the broadcast field, there is an urgent need for more advanced transmission and reception techniques that can efficiently use a limited frequency band.

An object of the present invention is to reduce waste of the entire frequency band by allocating a variable band for each broadcast program.

An object of the present invention is to flexibly adapt to a channel change of a broadcast program by confirming information on a transmission band for each broadcast program at a receiving terminal.

Another object of the present invention is to reduce the system load required for transmitting and receiving broadcast signals.

Another object of the present invention is to miniaturize / decrease the apparatus required for displaying a broadcast signal.

In order to achieve the above object and solve the problems of the prior art, the method for transmitting a base channel signal for variable band allocation according to an embodiment of the present invention provides a method for transmitting a broadcast signal corresponding to a variable frequency band (bandwidth). 1) generating channel programming information including transmission band information and (2) program information identifying the broadcast signal, and broadcasting the generated channel programming information in a predetermined band, and receiving side The terminal may receive the channel programming information in the selected band and tune to the transmission band information in response to a user's selection input of the program information.

In a method of receiving a base channel signal for variable band allocation according to an embodiment of the present invention, 1. transmission band information of a broadcast signal corresponding to a variably allocated frequency bandwidth and 2. program information for identifying the broadcast signal Receiving channel programming information comprising: displaying the program information with reference to the received channel programming information, receiving a selection input of a user corresponding to the displayed program information, and receiving the selection input Correspondingly, tuning to the transmission band information, and receiving and outputting the broadcast signal according to the tuning.

A receiving terminal according to an embodiment of the present invention provides channel configuration information including 1. transmission band information of a broadcast signal corresponding to a variably allocated frequency band and 2. program information identifying the broadcast signal. A signal receiving unit for receiving, a display unit for displaying the program information with reference to the received channel programming information, an input receiving unit for receiving a selection input of a user corresponding to the displayed program information, and corresponding to the received selection input, And a tuner configured to tune to the transmission band information, wherein the signal receiver receives the broadcast signal corresponding to the tuner, and the display unit displays the received broadcast signal.

According to an embodiment of the present invention, by allocating a variable band for each broadcast program, it is possible to reduce the waste of the entire frequency band.

According to an embodiment of the present invention, the receiving terminal can flexibly adapt to the channel change of the broadcast program by checking the information on the transmission band for each broadcast program.

According to an embodiment of the present invention, it is possible to reduce the system load required for transmitting and receiving broadcast signals.

According to an embodiment of the present invention, a device necessary for displaying a broadcast signal can be miniaturized / reduced.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout.

First, FIG. 1 is a diagram illustrating a signal 100 broadcast in a broadcasting station system according to an embodiment of the present invention.

Referring to FIG. 1, the signal 100 includes at least one broadcast signal classified for each band. The broadcast signal may be implemented by compressing a digital image and a digital audio signal, and each band may be variably set according to characteristics of the broadcast signal. The characteristics of the broadcast signal may be resolution information of the broadcast signal, and for example, a required bandwidth may be variably set for each HD, SD, or UD class broadcast signal. Specifically, the broadcast signal corresponding to band 1 (101) uses a narrower bandwidth than the broadcast signal corresponding to band 2 (102), and the receiving terminal transmits the broadcast signal corresponding to band 2 (102) to band 1 (101). Can be output at a higher quality than the broadcast signal. In addition, each broadcast signal is divided into a guard band (Guard Band) 103, and band 1 (101) and band 2 (102) can be minimized mutual interference as a guard band (103). To this end, the broadcast station system variably determines each transmission band by reflecting the bandwidth for each broadcast signal in advance. As a result, the present invention allocates a variable band to each broadcast program, thereby reducing waste of the entire frequency band and enabling efficient use of the limited frequency band.

The present invention using the variable band can reduce unnecessary system load at the transmitting and receiving end. In detail, the conventional transmitting end converts the frequency band of 6Mhz to digital and transmits a plurality of broadcasts to the remaining part, but the receiving end needs to perform the task of unpacking and selecting only the selected broadcast. This is a problem that requires a large amount of processor and time delay due to content mixing, but in the present invention, by transmitting only a single broadcast in a variable frequency band (channel), the system resources required for merging the contents separately or separating the merged contents This is not necessary. Therefore, the present invention can reduce the load on the system by shortening the processing time at the transmitting and receiving end and requiring only a low capacity processor.

In addition, the signal 100 according to an embodiment of the present invention further includes a base channel 104 to transmit index information for identifying a band of a variably allocated broadcast signal. In the base channel 104, channel programming information including information on which band each broadcast signal is serviced is transmitted, and a receiving terminal selects a band of a broadcast desired by a user using the channel programming information. The broadcast can be output.

Hereinafter, the technical ideas according to an embodiment of the present invention described schematically in FIG. 1 will be described in detail.

As used herein, the receiver terminal may be widely interpreted to include all terminals that receive a digital broadcast signal provided by a broadcasting station system and output the same.

2 is a flowchart illustrating a method of transmitting and receiving a base channel signal for variable band allocation according to an embodiment of the present invention.

First, in step 201, the broadcasting station system generates broadcast band information and program information. The broadcast station system must transmit at least one broadcast signal according to a broadcast schedule, and transmits by varying a frequency band for each broadcast signal for efficiency of the band. Accordingly, the transmission band information includes information on a bandwidth over which a specific broadcast signal is transmitted and information about a start band for transmitting the specific broadcast signal. For example, if the first broadcast signal is variably allocated to use a bandwidth of 2Mhz including a guard band and is transmitted in a starting band of 82Mhz, the first broadcast signal has a transmission band of 82Mhz to 84Mhz. As described above, according to an embodiment of the present invention, the variablely allocated frequency band may be adjusted according to the resolution of a broadcast signal. Specifically, in order to transmit a conventional broadband digital broadcast signal (UD class, 60 to 80 Mbps), a method of transmitting one broadcast using multiple channels (channel bonding, channel bonding) is used. However, the present invention variably sets a frequency band allocated to a broadcast according to the resolution, thereby eliminating the need for a processor of a transmitter for allocating several channels to a single broadcast or a processor for demodulating a signal received through multiple channels. . That is, the present invention can transmit a wideband digital broadcast signal using a single channel.

In addition, the program information includes information for uniquely identifying the broadcast signal. For example, the program information may include a program name of a corresponding broadcast.

Next, in step 202, the broadcasting station system associates the broadcasting band information with the program information to generate channel programming information. The channel configuration information will be described in detail with reference to FIG. 3.

3 is a diagram for describing channel organization information 300 according to an embodiment of the present invention.

Referring to FIG. 3, the channel formation information 300 is divided into a transmission band information field 301 and a program information field 302, and at least one program information corresponds to each transmission band information, and vice versa. . As a specific example, when a specific broadcast signal has outgoing band information of 'Band 1 303' and the program information (program type) for the broadcast signal is 'SBS Golf 304', the channel programming information 300 may include: It is stored in association with 'Band 1 303' and 'SBS Golf 304'. Accordingly, the receiving terminal may determine that the 'SBS golf 304' is serviced in the 'band 1 303'. The channel programming information 300 according to an embodiment of the present invention may include electronic program guide information or may be transmitted through a channel through which the electronic program guide information is transmitted.

In the related art, a user has no choice but to know his / her own viewing channel through a graphic input displayed on a screen for inputting a channel to a terminal. In contrast, the present invention provides the channel programming information 300 through a separate channel, so that the user can easily and variously check the information about the program as well as the channel information without a separate input. For example, the channel schedule information 300 may further include information on whether the program is currently being broadcast, scheduled to be broadcasted, or broadcasted in the past in the program information. If the viewer (service subscriber) selects one broadcast, the receiver terminal is selected. The display may further display a broadcast time point of the corresponding program on the screen.

As another example, the conventional receiving terminal temporarily displays the current channel number on the changed screen. However, the receiving terminal according to the present invention may display the channel programming information 300 on the screen instead of the channel number. Accordingly, the viewer can watch the broadcast more conveniently than the current method in which the channel currently viewed is indicated by a simple number, and can select a desired broadcast only by using the channel number and program information.

As mentioned above, the channel schedule information 300 may be generated in the broadcasting station system, but may be generated in another system independent of the broadcasting station system. To this end, the other system should receive the bandwidth and start band allocated for each broadcast signal from the broadcast station system, and also receive program information for each broadcast signal.

In FIG. 2, generation of transmission band information / program information and generation of channel organization information including the information are described as being processed in the broadcasting station system, but this may be processed in another system independent of the broadcasting station system.

Referring back to FIG. 2, in step 203, the broadcasting station system broadcasts the generated channel programming information. At this time, the channel programming information is broadcast in a predetermined band, which is divided into base channels among available channels for private broadcasting. Specifically, the broadcasting station system broadcasts broadcast signals in the bands that are variably allocated according to the organization, and also broadcasts the channel programming information that can be indexed to the broadcast signals through a base channel.

The receiving terminal receives the broadcast channel programming information through step 204. The receiving terminal according to an embodiment of the present invention may receive the channel programming information when the power is applied or the channel programming information during the idle time. In addition, the receiving terminal may receive the channel information when the power is applied, and then update the channel information during the idle time.

The receiving terminal receiving the channel programming information may output transmission band information and program information for each broadcast signal according to the channel programming information.

Accordingly, in step 205, the user of the receiving terminal checks the output program information, selects and inputs desired specific program information, and the receiving terminal receives the selection input of the user. In addition, in step 206, the receiving terminal tunes a channel and outputs a broadcast signal of the tuned channel in response to the user's selection input. According to an embodiment of the present invention, the receiving terminal may determine a tuning range by reflecting a frequency band that is variably allocated in tuning a channel.

According to an embodiment of the present invention, the receiving terminal may output only the program information among the received channel programming information and may not output the transmission band information. That is, the user cannot know the transmission band information of each broadcast signal, and can request the channel selection of the corresponding band by performing a selective input on desired program information to the receiving terminal. As a result, the receiving terminal according to an embodiment of the present invention can flexibly adapt to the channel change of the broadcast program by checking the information on the transmission band for each broadcast program. In addition, since the receiving terminal according to an embodiment of the present invention does not need a demultiplexing device necessary for a fixed band allocation digital broadcasting receiver, the receiving terminal can be miniaturized / reduced, thereby causing a system load at the receiving end. Can reduce the cost. In addition, the digital-based present invention makes it easier to apply a technology for selectively limiting reception of a broadcast by applying a download conditional access system (DCA).

The base channel signal transmission method for the variable band allocation according to the present invention can be implemented in the form of program instructions that can be executed by various computer means and recorded in a computer readable medium. The computer readable medium may include program instructions, data files, data structures, etc. alone or in combination. Program instructions recorded on the media may be those specially designed and constructed for the purposes of the present invention, or they may be of the kind well-known and available to those having skill in the computer software arts. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tape, optical media such as CD-ROMs, DVDs, and magnetic disks, such as floppy disks. Magneto-optical media, and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. The medium may be a transmission medium such as an optical or metal line, a wave guide, or the like, including a carrier wave for transmitting a signal designating a program command, a data structure, or the like. Examples of program instructions include not only machine code generated by a compiler, but also high-level language code that can be executed by a computer using an interpreter or the like. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

4 is a block diagram illustrating an internal configuration of a receiving terminal 400 according to an embodiment of the present invention.

The receiver terminal 400 includes a signal receiver 410, a display unit 420, an input receiver 430, and a tuner 440.

First, the signal receiver 410 receives channel configuration information including 1. transmission band information of a broadcast signal corresponding to a variably allocated frequency band and 2. program information for identifying the broadcast signal. The channel configuration information is information broadcast by the broadcasting station system together with specific broadcast signals and may be broadcasted through a predetermined channel (base channel).

Next, the display unit 420 displays the program information with reference to the received channel programming information, and the input receiving unit 430 receives a user's selection input corresponding to the displayed program information. That is, when the display unit 420 displays the program information on the screen, the user checks the program information that the user wants to watch, performs a selective input on the corresponding program information by using an input means such as a remote controller, and inputs the input receiving unit ( 430 receives the selection input.

The tuner 440 tunes to the transmission band information in response to the received selection input. The channel selector 440 according to an embodiment of the present invention may tune the base channel only during the initial driving of the receiver terminal 400 or during the idle time so that the channel programming information is received. Thereafter, the tuner 440 may operate to tune to a corresponding frequency band when the selection input is received.

According to an embodiment of the present invention, the tuning unit 440 may determine a tuning range according to the frequency band. As a specific example, the tuner 440 may determine the tuner range according to the resolution of the broadcast signal broadcast through the frequency band. That is, when the broadcast signal selected by the user is high resolution, the tuner 440 may determine the tune range to tune to a wider range of frequency bands than the low resolution broadcast signal.

When the station selection range is determined, the signal receiver 410 receives a broadcast signal together with the channel programming information, and the display unit 420 displays a corresponding broadcast signal received according to the station.

That is, by using the receiving terminal 400 according to an embodiment of the present invention, by checking the information on the transmission band for each broadcast program, it is possible to flexibly adapt to the channel change of the broadcast program. In addition, since the receiving terminal 400 does not need a demultiplexing device necessary for a fixed band allocation digital broadcasting receiver, the receiving terminal 400 can be miniaturized and reduced in cost, thereby reducing the system load at the receiving end. have.

While specific embodiments of the present invention have been described so far, various modifications are possible without departing from the scope of the present invention.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined not only by the claims below, but also by the equivalents of the claims.

1 is a diagram illustrating a signal broadcast in a broadcasting station system according to an embodiment of the present invention.

2 is a flowchart illustrating a method of transmitting and receiving a base channel signal for variable band allocation according to an embodiment of the present invention.

3 is a diagram for describing channel organization information according to an embodiment of the present invention.

4 is a block diagram illustrating an internal configuration of a receiving terminal according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

400: receiving terminal

410: signal receiving unit

420: display unit

430: input receiver

440: selection

Claims (9)

Generating channel programming information including .. transmission band information of a broadcast signal corresponding to a variably allocated frequency bandwidth and program information for identifying the broadcast signal; And Broadcasting the generated channel programming information in a predetermined band; Including, A receiving terminal receives the channel programming information in the selected band and tunes to the transmitting band information in response to a user's selection input of the program information. Signal transmission method. The method of claim 1, The channel programming information further includes an electronic program guide (Electronic Program Guide). The method of claim 1, And the frequency band is adjusted according to the resolution of a broadcast signal broadcast through the frequency band. Receiving channel configuration information including 1. transmission band information of a broadcast signal corresponding to a variably allocated frequency bandwidth and 2. program information identifying the broadcast signal; Displaying the program information with reference to the received channel programming information; Receiving a selection input of a user corresponding to the displayed program information; Tuning to the outgoing band information in response to the received selection input; And Receiving and outputting the broadcast signal according to the station Base channel signal reception method for variable band allocation, comprising a. The method of claim 4, wherein The step of tuning to the transmission band information, Determining a tuning range according to the frequency band Base channel signal reception method for variable band allocation, comprising a. A computer-readable recording medium having recorded thereon a program for performing the method of any one of claims 1 to 5. A signal receiver configured to receive channel band information including broadcast band information of a broadcast signal corresponding to a variably allocated frequency band and program information for identifying the broadcast signal; A display unit which displays the program information with reference to the received channel programming information; An input receiver configured to receive a selection input of a user corresponding to the displayed program information; And A tuning unit tuned to the transmission band information in response to the received selection input; Including, And the signal receiver receives the broadcast signal in response to the channel, and the display unit displays the received broadcast signal. The method of claim 7, wherein The selection unit, And a channel selection range is determined according to the frequency band. The method of claim 8, The selection unit, And a channel selection range is determined according to a resolution of a broadcast signal broadcast through the frequency band.

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