KR20100064860A - Broadcast processing apparatus and control method thereof - Google Patents

Abstract

PURPOSE: A broadcast processing apparatus and a control method thereof are provided to transmit record ID information of a table, in which a frequency for channel setting is recorded, to an external device. CONSTITUTION: A digital TV(200) comprises the following units. A first signal processing unit(210) processes a received broadcast signal. A display unit(220) displays image data included in the processed broadcast signal. A voice output unit(230) outputs audio data included in the processed broadcast signal. The first connection unit is connected to a set top box(300). The first controller(250) transmits the record ID information to the set top box.

Description

BROADCAST PROCESSING APPARATUS AND CONTROL METHOD THEREOF

The present invention relates to a broadcast processing apparatus and a control method thereof, and more particularly to record information of a table in which a frequency for channel setting is recorded as channel information capable of identifying a corresponding channel together with a recording command. The present invention relates to a broadcast processing device and a control method for transmitting the same to an external device.

A broadcast processing device, such as a digital TV (DTV), processes a received broadcast signal and displays it on a display panel implemented with liquid crystal. Such a digital TV not only processes and displays broadcast signals received through a cable or satellite, but also displays a video cassette recorder (VCR), a digital versatile disk (DVD) player, and a personal computer (PC). Various external devices such as a set top box (STB), etc. are connected to process and display video and / or audio provided from these external devices.

Recently, various external devices with a built-in tuner function have been released, and such external devices process received broadcast signals and output them externally, like digital TVs, or, if they have their own display panel, It can also be displayed on the screen. External devices with built-in tuners are used for various purposes in connection with digital TVs. For example, set-tops with tuners for recording requests for specific channels in addition to the channels the user is currently watching on digital TVs. When transmitting to a box, a set-top box with a tuner tunes to a corresponding channel and performs recording. At this time, information about channels to be recorded must be correctly transmitted from the digital TV to the set-top box so that channels can be tuned to each other.

Accordingly, recently, in the case of ATSC digital channels, a method of selecting a promised channel using a program number and a transport stream ID (TS ID) is used in the HDMI-CEC standard specification. In this case, the set-top box should search for and compare the transport stream ID transmitted from the digital TV in the channel map stored in the device, or extract and search the transport stream ID while tuning each channel. However, in this case, there is a problem that the capacity of the channel information delivered by the transport stream ID is very large, and when the channel is changed and the respective channel maps stored in the digital TV and the set-top box are different from each other, The set-top box may tune to a channel different from the information, or normal tuning may not be performed. In addition, when the channel information is found while tuning all the channels, there is a problem that the set-top box takes a considerable time to tune the channel.

Broadcast processing apparatus according to the present invention, a signal processing unit for processing a broadcast signal; A connection portion to which an external device is connected; And a control unit which transmits the record identification information of the table to the external device regarding the table on which the frequency for channel setting is recorded through the connection unit.

In addition, the record identification information may include information about a physical transmission channel (PTC) of the frequency.

In addition, the record identification information may include information about the type (RFType) of the broadcast signal.

In addition, when the broadcast signal is a digital broadcast signal, the record identification information may further include a program number.

In addition, in the table, frequencies designated for channel setting for each country or region may be recorded.

In addition, the broadcast processing apparatus according to the present invention, a signal processing unit for processing a broadcast signal; A connection portion to which an external device is connected; And a control unit for receiving the record identification information of the table related to the table on which the frequency for channel setting is recorded from the external device, and selecting a channel corresponding to the record identification information.

In addition, the record identification information may include information about a physical transmission channel (PTC) of the frequency.

In addition, the record identification information may include information about the type (RFType) of the broadcast signal.

In addition, when the broadcast signal is a digital broadcast signal, the record identification information may further include a program number.

In addition, in the table, frequencies designated for channel setting for each country or region may be recorded.

The controller may perform a reservation function including reservation viewing and reservation recording on the selected channel.

The display apparatus may further include a display unit configured to display the broadcast signal processed by the signal processor, and the controller may display channel information including a channel name, a channel number, and a channel description of a channel corresponding to the record identification information. can do.

In addition, a control method of a broadcast processing device to which an external device is connected according to the present invention comprises the steps of: processing a broadcast signal; And transmitting record identification information of the table to a table in which frequencies for channel setting are recorded to the external device.

In addition, the record identification information may include information about a physical transmission channel (PTC) of the frequency.

In addition, the record identification information may include information about the type (RFType) of the broadcast signal.

In addition, when the broadcast signal is a digital broadcast signal, the record identification information may further include a program number.

In addition, in the table, frequencies designated for channel setting for each country or region may be recorded.

In addition, a control method of a broadcast processing apparatus to which an external device is connected according to the present invention includes: receiving record identification information of the table related to a table on which a frequency for channel setting is recorded from the external device; Tuning a channel corresponding to the record identification information; And processing a broadcast signal corresponding to the tuned channel.

In addition, the record identification information may include information about a physical transmission channel (PTC) of the frequency.

In addition, the record identification information may include information about the type (RFType) of the broadcast signal.

When the broadcast signal is a digital broadcast signal, the record identification information may further include a program number.

In addition, in the table, frequencies designated for channel setting for each country or region may be recorded.

The method may further include performing a reservation function including reservation viewing and reservation recording on the tuned channel.

The method may further include displaying channel information including a channel name, a channel number, and a channel description of the channel corresponding to the record identification information.

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

1 is a block diagram showing the configuration of a broadcast processing system according to an embodiment of the present invention. The broadcast processing system according to an embodiment of the present invention includes one or more broadcast processing apparatuses which are connected to each other through a connection unit to transmit and receive channel information.

As shown in FIG. 1, the broadcast processing system 100 according to an exemplary embodiment of the present invention may include, but is not limited to, a digital TV 200 connected to each other through connection units 240 and 340 to transmit and receive channel information. Set top box 300 is included.

In the present embodiment, for convenience of description, the broadcast processing system 100 composed of the digital TV 200 and the set-top box 300 will be described, but the technical idea of the present invention is not limited thereto. One or more devices 100 may be connected to each other such as an AV device, a monitor, a video cassette recorder (VCR), a digital versatile disk (DVD) player, a personal computer (PC), and the like to transmit and receive channel information. It will be apparent to those skilled in the art that a broadcast processing apparatus may be configured to be included.

As shown in FIG. 1, the digital TV 200 according to an embodiment of the present invention may be processed by the first signal processor 210 and the first signal processor 210 to process the received broadcast signal. A display unit 220 for displaying image data included in the broadcast signal to be output, a voice output unit 230 for outputting voice data included in the broadcast signal processed by the first signal processor 210, and a set-top box 300 The first connection unit 240 is connected to an external device such as, and through the first connection unit 240 for transmitting the record identification information of the table recorded the frequency for the channel setting to an external device such as the set-top box 300 One control unit 250 is included.

Hereinafter, each detailed component is demonstrated.

The first signal processor 210 processes the received broadcast signal, and receives a tuner unit 211 for receiving the broadcast signal, a demultiplexer 212 for separating the broadcast signal into image data, audio data, and additional data; And an image processor 213 for processing image data included in the signal, and a voice processor 214 for processing audio data included in the broadcast signal.

The tuner 211 tunes the frequency of a predetermined channel under the control of the controller 250 to be described later, receives a broadcast signal of the corresponding channel through an antenna, and demodulates the received broadcast signal and provides it to the demultiplexer 212. To this end, the tuner unit 211 may include a channel detection module (not shown) and an RF demodulation module (not shown). The broadcast signal demodulated by the tuner 111 is processed by the image processor 213 and the audio processor 214 and output to the display unit 220 and the audio output unit 230.

The demultiplexer 212 separates the broadcast signal demodulated by the tuner unit 211 into image data, audio data, and additional data, which are respectively processed by the image processor 213, the audio processor 214, and the additional data processor (not shown). Output to

The image processor 213 restores the image data included in the broadcast signal to a decoding format corresponding to the encoding format when the broadcast signal is transmitted, and adjusts the image data to a vertical frequency, resolution, aspect ratio, etc. that meets the output standard of the display unit 220. Transform and process. To this end, the image processor 213 may include an image processing module such as a scaler.

The voice processor 214 restores and processes the voice data included in the broadcast signal into a decoding format corresponding to the encoding format when the broadcast signal is transmitted, and outputs the same through the voice output unit 230.

The display unit 220 may display an image processed by the image processor 213, and may include a display panel (not shown) in which the image is displayed and a panel driver (not shown) for controlling the driving of the display panel. The display unit 220 according to an embodiment of the present invention may use various types of display modules, such as digital light processing (DLP), liquid crystal display (LCD), plasma display panel (PDP), and the like.

The voice output unit 230 outputs the voice processed by the voice processing unit 214 and may include a plurality of speakers (not shown) provided with a plurality of channels.

The first connection unit 240 receives an image and / or audio from an external device such as the set top box 300, and transmits the image and / or audio to the first signal processor 210. To this end, the first connection unit 240 may be implemented to include a connection terminal of various standards, such as component, D-Sub, DVI, HDMI.

The first controller 250 generally controls the operations of the above-described units, and according to an embodiment of the present invention, through the first connection unit 240, the record identification information of the table in which the frequency for channel setting is recorded is channeled. The information is transmitted to the set top box 300. For example, when a user inputs a command to record a broadcast of a specific channel in the set-top box 300, the first controller 250 is channel information that can identify the corresponding channel with a recording command, and the frequency for channel setting is increased. The record identification information of the recorded table is transmitted to the set top box 300. Accordingly, the set-top box 300 tunes to the corresponding channel based on the record identification information and the recording command transmitted from the digital TV 200 to perform recording.

Hereinafter, a table in which frequencies for channel setting are recorded and record identification information transmitted as channel information will be described in more detail.

A table in which frequencies for channel setting are recorded is a table in which frequencies designated for channel setting are recorded for each country or region, and is commonly referred to as a frequency table for each country (hereinafter, referred to as a frequency table). For example, Figure 2 is an exemplary view showing a frequency table according to an embodiment of the present invention.

As shown in FIG. 2, the frequency table is a table in which designated frequencies are recorded for each type of broadcast signal (hereinafter referred to as 'RFType') and a physical transmission channel (hereinafter referred to as 'PTC'). . The frequency values recorded in the frequency table are fixed values for each country or region, and are stored in the device in the form of program codes when the image processing apparatus such as the digital TV 200 and the set-top box 300 of the present embodiment is manufactured. Is a value. Such a frequency table is used when an image processing apparatus executes automatic channel setting to create a channel map. That is, when a user executes automatic channel setting, the image processing apparatus sequentially scans a frequency band determined for each RFType by referring to a stored frequency table and stores a transport stream ID extracted from a broadcast signal for a PTC receiving the signal. To create a channel map. For example, when creating a channel map for CATV STD in FIG. 2, the image processing apparatus sequentially scans the frequency bands recorded in the frequency table. At this time, if a signal is received from PTC 1, 3, 5, 15, the transport stream ID is extracted from the signal, and the result is stored to create a channel map for the frequency band corresponding to PTC 1, 3, 5, 15. After that, when the user selects a specific channel, the image processing apparatus selects the channel based on the channel map stored through automatic channel setting.

On the other hand, the record identification information transmitted as the channel information is information about PTC as information for distinguishing rows of the frequency table and information about RFType as information for distinguishing columns of the frequency table.

According to an embodiment of the present invention, the first controller 250 transmits the information about the PTC and the RFType of the frequency table as channel information to the set-top box 300 as shown in FIG. 2. Accordingly, the set-top box 300 may select a channel based on the information on the transmitted PTC and the information on the RFType. For example, when a user inputs a command to record a broadcast of a specific channel in the set-top box 300, the first control unit 250, together with the recording command, information "5" on PTC and information "CATV STD" on RFType. Packetizes and transmits the packetized information to the set-top box 300 as channel information. Accordingly, the set-top box 300 corresponds to a channel corresponding to the transmitted channel information, that is, a frequency "77.25" (RFType is CATV STD) of a cell where PTC "5" and RFType "CATV STD" cross each other in the frequency table. The channel is tuned and recording of the channel is performed.

Such information about PTC and information about RFType are very small compared to information such as transport stream ID, etc., so that the channel can be identified by delivering minimum information. In addition, even when the frequency band used by the broadcasting service provider is changed, that is, when the channel is changed and each channel map stored in the digital TV 200 and the set-top box 300 is different from each other, the transport stream stored in the channel map Since the record identification information on the frequency table is transmitted instead of the ID, the same channel is always tuned. Furthermore, it is not necessary to find channel information while tuning each channel, thereby reducing the time used for tuning.

Meanwhile, in the case of a digital broadcast signal, a sub-channel may exist, and in this case, a program number for distinguishing a subchannel may be further transmitted as channel identification information.

In the set-top box 300 according to an embodiment of the present invention, as shown in FIG. 1, an external device such as a digital TV 200 and a second signal processor 310 for processing a received broadcast signal are connected. A second control unit for receiving record identification information of a table in which a frequency for channel setting is recorded from the second connection unit 340 and an external device such as the digital TV 200, and tuning a channel corresponding to the received record identification information. And 350.

Hereinafter, each detailed component is demonstrated.

The second signal processor 310 processes the received broadcast signal and transmits it to the digital TV 200 through the second connection unit 340. To this end, the second signal processor 310 may include a tuner, a demultiplexer, an image processor, an audio processor, and the like as the first signal processor 210 described above, and may be configured according to the purpose of the set-top box 300. It may be implemented in various forms.

The second connector 340 transmits the broadcast signal processed by the second signal processor 310 to an external device such as the digital TV 300. To this end, the second connection unit 340 may be implemented to include a connection terminal of various standards, such as component, D-Sub, DVI, HDMI.

The second controller 350 generally controls the operations of the above-described units, and according to an embodiment of the present invention, a table in which frequencies for channel setting from the digital TV 200 are recorded through the second connector 350. Record identification information is received as channel information, and a channel corresponding to the record identification information is selected. For example, when a user inputs a command for recording a broadcast of a specific channel in the set-top box 300 through the digital TV 200, the second controller 250 may identify the corresponding channel together with the recording command. The record identification information of the table in which the frequency for channel setting is recorded is received from the digital TV 200. Accordingly, according to this, the set-top box 300 selects the corresponding channel based on the record identification information and the recording command transmitted from the digital TV 200 to perform recording.

Since the table in which the frequency for channel setting is recorded and the record identification information transmitted as the channel information are the same as described above, detailed description thereof will be omitted. The set top box 300 may include a display unit and a voice output unit similarly to the digital TV 200. In this case, the set top box 300 directly transmits the broadcast signal processed by the second signal processor 310 from the set top box 300. You could also print In addition, when the configuration of the display unit is included in the set-top box 300, based on the record identification information transmitted from the digital TV 200, the channel information such as the channel name, channel number and channel description stored in the channel map is displayed. You could do it. Although the set-top box 300 has been described with respect to the configuration that is distinct from the digital TV 200, the set-top box 300 may include the same or similar configuration as the digital TV 200, which will be apparent to those skilled in the art. Therefore, detailed description is omitted.

With the above-described configuration, a process of transmitting channel information in the broadcast processing system 100 according to an embodiment of the present invention will be described with reference to FIGS. 3 and 4.

As shown in FIG. 3, the first controller 250 controls the first signal processor 210 to process an input broadcast signal (S210).

During processing of the input broadcast signal, the first controller 250 determines whether a command for recording a broadcast of a specific channel in the set-top box 300 is input (S220). When the recording command is input, the first controller 250 transmits the record identification information of the table in which the frequency for channel setting is recorded as the channel information for identifying the corresponding channel with the recording command to the set-top box 300 ( S230).

Meanwhile, as shown in FIG. 4, the second controller 350 receives, as channel information, record identification information of a table in which a frequency for channel setting is recorded together with a recording command from the digital TV 200 (S310).

The second controller 350 selects a channel corresponding to the received record identification information (S320).

Thereafter, the second controller 350 performs recording on the tuned channel (S330).

The above embodiments are merely exemplary, and various modifications and equivalent other embodiments are possible to those skilled in the art. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the invention described in the claims below.

1 is a block diagram showing the configuration of a broadcast processing system according to an embodiment of the present invention.

2 is an exemplary diagram showing a frequency table according to an embodiment of the present invention,

3 and 4 are flowcharts illustrating a process of transmitting and receiving channel information in a broadcast processing system according to an embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100: image processing system

200: digital TV 210: first signal processing unit

211: tuner portion 212: demultiplexer

213: image processor 214: audio processor

220: display unit 230: audio output unit

240: first connection unit 250: first control unit

300: set-top box 310: second signal processing unit

340: second connection unit 350: second control unit

Claims (24)

In the broadcast processing device, A signal processor which processes a broadcast signal; A connection portion to which an external device is connected; And And a control unit which transmits the record identification information of the table to the external device regarding the table on which the frequency for channel setting is recorded through the connection unit. The method of claim 1, And the record identification information includes information about a physical transmission channel (PTC) of the frequency. The method of claim 2, And the record identification information includes information on the type (RFType) of the broadcast signal. The method of claim 3, And when the broadcast signal is a digital broadcast signal, the record identification information further comprises a program number. The method of claim 1, The table is a broadcast processing apparatus, characterized in that the frequency specified for channel setting by country or region is recorded. In the broadcast processing device, A signal processor which processes a broadcast signal; A connection portion to which an external device is connected; And And a control unit for receiving record identification information of the table related to the table on which a frequency for channel setting is recorded from the external device, and tuning a channel corresponding to the record identification information. The method of claim 6, And the record identification information includes information about a physical transmission channel (PTC) of the frequency. The method of claim 7, wherein And the record identification information includes information on the type (RFType) of the broadcast signal. The method of claim 8, And when the broadcast signal is a digital broadcast signal, the record identification information further comprises a program number. The method of claim 6, The table is a broadcast processing apparatus, characterized in that the frequency specified for channel setting by country or region is recorded. The method of claim 6, And the control unit performs a reservation function including reservation viewing and reservation recording on the tuned channel. The method of claim 6, And a display unit for displaying the broadcast signal processed by the signal processor. And the control unit displays channel information including a channel name, a channel number, and a channel description of a channel corresponding to the record identification information on the display unit. In the control method of a broadcast processing device connected to an external device, Processing a broadcast signal; And And transmitting record identification information of the table to a table in which a frequency for channel setting is recorded to the external device. The method of claim 13, And the record identification information includes information about a physical transmission channel (PTC) of the frequency. The method of claim 14, And the record identification information includes information on the type (RFType) of the broadcast signal. The method of claim 15, And when the broadcast signal is a digital broadcast signal, the record identification information further comprises a program number. The method of claim 13, The table is a control method of a broadcast processing apparatus, characterized in that the frequency specified for channel setting by country or region is recorded. In the control method of a broadcast processing device connected to an external device, Receiving record identification information of the table relating to a table on which a frequency for channel setting is recorded from the external device; Tuning a channel corresponding to the record identification information; And And processing a broadcast signal corresponding to the tuned channel. The method of claim 18, And the record identification information includes information about a physical transmission channel (PTC) of the frequency. The method of claim 19, And the record identification information includes information on the type (RFType) of the broadcast signal. 21. The method of claim 20, And when the broadcast signal is a digital broadcast signal, the record identification information further comprises a program number. The method of claim 18, The table is a control method of a broadcast processing apparatus, characterized in that the frequency specified for channel setting by country or region is recorded. The method of claim 18, And performing a reservation function including reservation viewing and reservation recording on the tuned channel. The method of claim 18, And displaying channel information including a channel name, a channel number, and a channel description of the channel corresponding to the record identification information.

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