JP2009152739A - Digital broadcast signal reception device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a digital broadcast signal reception device to display the channel of an HD broadcast on a television monitor without performing any complicated operation. <P>SOLUTION: The reception device 1 includes a tuner 2, a decoder unit 3, an OSD unit 4, a remote controller 5, a remote control reception unit 6, a memory 7, and a CPU 8. When a channel is selected with the remote controller 5, the CPU 8 decides whether there are two or more identical-content broadcast channels for broadcasting television programs having the same contents in the same time period in a channel map. When there are identical-content program broadcast channels, broadcast kinds of the selected channel and the identical-content program broadcast channels, i.e. SD broadcasts or HD broadcasts area decided and when the selected channel is the channel of an SD broadcast and one of the identical-content program broadcast channels is the channel of an HD broadcast, the selected channel is switched to the channel of the HD broadcast included in the identical-content program broadcast channels. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention receives a digital broadcast signal composed of an SD (Standard Definition) broadcast signal and an HD (High Definition) broadcast signal, and displays a television program broadcast on the SD broadcast channel or the HD broadcast channel on a television monitor or the like. The present invention relates to a digital broadcast signal receiving apparatus.

  Conventionally, a program having the same content may be broadcast simultaneously on both the SD broadcast channel and the HD broadcast channel. In a broadcast signal receiving apparatus capable of receiving an SD broadcast signal and an HD broadcast signal, it can be said that there is no merit of selecting an SD broadcast channel from the viewpoint of image quality and sound quality.

In Patent Document 1, regarding channel up / down channel selection, when it is determined that SD broadcasting is selected, channel selection is performed for each channel, and when it is determined that HD broadcasting is performed, SDTV that performs HDTV is selected. A technique is shown in which a plurality of channels are integrated and handled as one channel, and up / down tuning is performed.
JP 2001-189894 A

  However, in the technique disclosed in Patent Document 1, when there is an SD broadcast channel and an HD broadcast channel simultaneously broadcasting programs of the same content, when an SD broadcast channel is selected, HD broadcast is selected. It is necessary to switch to this channel, and the operation becomes complicated and the usability is poor.

  The present invention has been made to solve the above-described problems. When there is a channel for broadcasting a television program of the same content in the same time zone, the HD broadcast channel can be set to a television monitor without performing complicated operations. It is an object of the present invention to provide a digital broadcast signal receiving apparatus that can be displayed on the screen.

  In order to achieve the above object, the invention of claim 1 includes a receiving means for receiving a digital broadcast signal composed of an SD (Standard Definition) broadcast signal and an HD (High Definition) broadcast signal distributed from a broadcast station on each channel; Decoding means for decoding the digital broadcast signal received by the receiving means and outputting SD broadcast data or HD broadcast data including program information to a television monitor connected to the apparatus; A storage means for storing information as a channel map; an operation means operated by a user to perform channel tuning and other various operations based on the channel map; and a control means for controlling each of the above units, the operation means TV number broadcast on SD broadcast channel or HD broadcast channel according to channel selection by In the digital broadcast signal receiving apparatus for displaying a set on the television monitor, when the channel is selected by the operation means, the control means performs SD broadcast data or HD broadcast by the decoding means for the selected channel. Based on the program information held in the data, it is determined whether there are two or more identical content program broadcast channels for broadcasting the same content television program in the same time zone in the channel map, and the same content program broadcast channel When it is determined that there is a broadcast channel of the same content program broadcast channel, it is determined whether the broadcast type is SD broadcast or HD broadcast. As a result of the determination, the selected channel is an SD broadcast channel. When there is an HD broadcast channel in the same content program broadcast channel, automatically or the operation means Depending on the operation, it is characterized in that the switching to the channel of HD broadcasting contained the selected channel during the same content program broadcast channel.

  According to a second aspect of the present invention, in the first aspect of the present invention, the control means displays an EPG (Electronic Program Guide) screen including a list of television programs broadcast on each channel based on the program information. An EPG screen display function to be displayed on a monitor, and when the operation means displays a list of TV programs, the determination is made for all channels included in the channel map, and the same contents When it is determined that there is a program broadcast channel, the determination is performed for the same content program broadcast channel, and as a result of the determination, both the SD broadcast channel and the HD broadcast channel are included in the same content program broadcast channel. HD broadcast channels included in the same channel as a TV program of the same program broadcast channel It is characterized in that display only television program on the EPG screen.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, when the predetermined operation is performed by the operation unit, the control unit applies to all channels included in the channel map. When the determination is made and it is determined that there is the same content program broadcast channel, the determination is performed for the same content program broadcast channel, and as a result of the determination, the SD broadcast channel and the HD in the same content program broadcast channel are determined. When there are both broadcast channels, SD channel information included in the same content program broadcast channel is deleted from the channel map automatically or in response to an operation by the operation means. Is.

  According to the first aspect of the present invention, when the selected channel is an SD broadcast channel, the HD broadcast channel included in the same content program broadcast channel automatically or according to the operation by the operation means. And the TV monitor displays the HD broadcast TV program. Therefore, the user can easily view a television program with high-quality HD broadcasting.

  According to the invention of claim 2, since only the HD broadcast channel included in the same content program broadcast channel is displayed in the TV program list as the channel for broadcasting the same content program, the EPG screen is displayed. And the channel selection operation on the EPG screen become easy.

  According to the third aspect of the present invention, since the SD broadcast channel information included in the same content program broadcast channel is deleted from the channel map, the SD broadcast channel can be selected for the same content program. The television program of HD broadcast is displayed on the television monitor. Therefore, the user can more easily view a TV program with high-quality HD broadcasting.

  A digital broadcast signal receiving apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a block configuration of a digital broadcast signal receiving apparatus according to this embodiment. A digital broadcast signal receiving device (hereinafter referred to as this receiving device) 1 receives a broadcast signal transmitted from a television broadcasting station, and outputs a video signal, an audio signal, etc. included in the broadcast signal to an external device such as a monitor device. A tuner 2 (reception unit), a decoder unit (decoding unit) 3, an on-screen display (OSD) unit 4, a remote control (operation unit) 5, a remote control reception unit 6, and a memory (storage unit) ) 7 and a CPU (control means) 8. The receiving apparatus 1 includes an antenna 9 for receiving a digital broadcast signal composed of an SD (Standard Definition) broadcast signal and an HD (High Definition) broadcast signal defined by the DVB (Digital Video Broadcasting) standard, and a television program. A monitor device 10 capable of projecting video and outputting the sound is connected.

  The SD broadcast signal and the HD broadcast signal are obtained by encoding the SD broadcast data and the HD broadcast data, respectively. The SD broadcast data and the HD broadcast data are delivered by the own station with the video signal and the audio signal described above. It includes program information such as the broadcast start time and broadcast end time, type, title, synopsis, main performers, etc. Program information is created and distributed uniquely for each channel, and the amount of program information distributed at one time and the amount of program information distributed at one time (how many hours or how many days ahead are included in the TV program) ) Are various.

  The tuner 2 tunes the reception frequency to a frequency corresponding to the physical channel selected by the user, and receives the SD broadcast signal or the HD broadcast signal on the channel via the antenna 9. Here, the SD broadcast signal is encoded according to the MPEG-2 standard, and the HD broadcast signal is H.264. It is encoded according to the H.264 standard.

  The decoder unit 3 performs demodulation processing, error correction processing, and the like on the digital broadcast signal received by the tuner 2 and separates necessary TS packets from the multiplexed signal, and each separated TS It is composed of a video decoding circuit, an audio decoding circuit, and a data decoding circuit (all not shown) that perform a decoding process on the packet. The video decoding circuit performs a decoding process on the TS packet including the video signal and extracts the video signal. The extracted video signal is output to the monitor device 10 via the OSD unit, and the video is displayed on the monitor screen 11 of the monitor device 10. The audio decoding circuit performs a decoding process on the TS packet including the audio signal, and extracts the audio signal. The extracted audio signal is output to the monitor device 10 and output from the speaker 12 of the monitor device 10. The data decoding circuit performs a decoding process on a TS packet including SI (Service Information) data as the program information, and SI data is extracted. The extracted SI data includes PMT (Program MAP Table) and EPG (Electronic Program Guide) images, which are program specification information used for TS packets, and SIT (Event Description Information) and EIT (Event Information). Table) etc.

  The OSD unit 4 superimposes a predetermined display image on the video signal input from the decoder unit 3 and outputs it to the monitor device 10. The remote controller 5 includes a power button 51 for turning on / off the receiving device 1, an EPG button 52 for displaying an EPG screen, a numeric keypad 53 and a direction key 54 for channel selection, and the like. Then, a radio signal such as an infrared signal corresponding to the key operation by the user is sent to the remote control receiving unit 6. The remote control receiving unit 6 receives the radio signal sent from the remote control 5 and outputs it to the CPU 8.

  The memory 7 stores channel information that can be received by the tuner 2 as a channel map. The channel map is stored by scanning the entire area of the broadcast signal frequency band at the time of initial setting of the receiving apparatus 1, and is used in the subsequent channel selection operation. The memory 7 stores SI data extracted by the data decoding circuit of the decoder unit 3 for all receivable channels. The CPU 8 performs overall control in the receiving apparatus 1. In particular, as processing according to the present invention, as described below, a selected channel switching process for switching a selected channel, and a list of TV programs for a predetermined channel are displayed. An EPG display process for displaying the EPG screen as a single unit and a channel information deletion process for deleting the channel data of the SD broadcast are executed.

  Next, an operation procedure of the CPU 8 in the channel selection channel switching process in the digital broadcast signal receiving apparatus 1 configured as described above will be described. FIG. 2 shows a flowchart of the channel selection channel switching process. When the user selects a channel (S1), two or more same-content program broadcast channels that broadcast a program having the same content as the program broadcast on the selected channel in the selected time zone are displayed. It is determined whether or not it is included in the channel map (S2). Specifically, based on the EIT of SI data stored in the memory 7, it is determined whether or not there is a channel with the same program name at the present time. Here, examples of the operation for channel selection include a direct channel selection operation in which the channel number is directly designated by the ten key 53 and an up / down channel selection operation in which the channel is sequentially increased or decreased by the direction key 54.

  When it is determined that there is the same content program broadcast channel (YES in S2), for each channel included in the same content program broadcast channel, it is determined whether the broadcast type is SD broadcast or HD broadcast (S3). When it is determined that there is no identical content program broadcast channel (NO in S2), no operation is performed (S4), and this process is terminated. When performing the above determination, the stream_type of the PMT is MPEG-2 format or H.264. H.264 format is determined, and in the case of the MPEG-2 format, SD broadcasting is used. In the case of the H.264 format, HD broadcasting is used. In addition to this method, Component_descriptor in SDT or EIT is MPEG-2 or H.264. H.264 may be used.

  As a result of the determination, when the selected channel is an SD broadcast channel and there is an HD broadcast channel in the same content program broadcast channel (YES in S3), the selected channel is in the same content program broadcast channel. Is automatically switched to the HD broadcast channel included in (S5). In addition, when there are a plurality of HD broadcast channels in the same content program broadcast channel, any HD broadcast channel may be switched. The selected channel is an SD broadcast channel and there is no HD broadcast channel in the same content program broadcast channel, or the selected channel regardless of the broadcast type of the channel in the same content program broadcast channel Is HD broadcast (NO in S3), no operation is performed (S6), and this process is terminated. Here, in addition to automatically switching to the HD broadcast channel in S3, the OSD unit 4 indicates that a program having the same content as the program broadcast on the selected channel is being broadcast on another channel. It may be displayed on the monitor screen 11 and selected by the user to switch to the HD broadcast channel.

  As described above, when the selected channel is an SD broadcast channel, the channel is switched to the HD broadcast channel included in the same content program broadcast channel automatically or in accordance with the operation of the remote controller 5, and the monitor screen 11 shows a television program of HD broadcasting. Therefore, the user can easily view a television program with high-quality HD broadcasting.

  Next, an operation procedure of the CPU 8 in the EPG display process will be described. FIG. 3 shows a flowchart of the EPG display process. When the user presses the EPG button 52 of the remote controller 5 (S7), it is determined whether or not two or more identical content program broadcast channels are included in the channel map (S8). Specifically, based on the EIT of the SI data stored in the memory 7, whether or not there is a channel whose program name, program start time, and program end time all match in a predetermined period (for example, two weeks) ahead of the current time Make a decision.

  When it is determined that there is the same content program broadcast channel (YES in S8), for each channel included in the same content program broadcast channel, it is determined whether the broadcast type is SD broadcast or HD broadcast (S9). When it is determined that there is no same content program broadcast channel (NO in S8), an EPG screen showing a list of TV programs for each channel is displayed based on the EIT and SDT stored in the memory 7 (S10). As a result of the determination, when there are both SD broadcast and HD broadcast channels in the same content program broadcast channel (YES in S9), for the TV program of the same content program broadcast channel, the HD broadcast channel included in the channel The EPG screen is displayed together (S11).

  FIG. 4A shows an example of an EPG screen in which each channel is displayed separately, and FIG. 4B shows an EPG screen in which the same content program broadcast channels are collectively displayed in FIG. 4A. . In FIG. 4 (a), a list of TV programs for channels A, B, C, and D is displayed. Programs having the same contents in channels A and D (program 1, program 2, program 3, program 4, program 4) 5) are broadcast in the same time zone. Here, channel A is an HD broadcast channel, and channel D is an SD broadcast channel. When the above-described processing of S11 is performed on the EPG screen displayed in this way, the channel D of the SD broadcast is not displayed as shown in FIG. 4B. When there is either SD broadcast or HD broadcast in the same content program broadcast channel (NO in S9), for the same content program broadcast channel, multiple channels are combined into a single channel and displayed on the EPG screen (S12).

  As described above, since only the HD broadcast channels included in the same content program broadcast channel are displayed in the TV program list as channels for broadcasting the same content program, the visibility of the EPG screen is improved. The channel selection operation on the EPG screen is facilitated.

  Next, the operation procedure of the CPU 8 in the channel information deletion process will be described. FIG. 5 shows a flowchart of the channel information deletion process. When a channel search for registering a channel map is executed at the time of initial setting of the receiving apparatus 1 (S13), it is determined whether or not the same content program broadcast channel is included in the channel map as in S8 described above. (S14). When it is determined that there is the same content program broadcast channel (YES in S14), for each channel included in the same content program broadcast channel, it is determined whether the broadcast type is SD broadcast or HD broadcast (S15). When it is determined that there is no identical content program broadcast channel (NO in S14), no operation is performed (S16), and this process is terminated.

  When there are both SD broadcast and HD broadcast channels in the same content program broadcast channel (YES in S12), the OSD unit 4 displays on the monitor screen 11 that there is a channel that broadcasts the same content program in the same time zone. The SD broadcast channel information included in the same content program broadcast channel is deleted from the channel map (S17). When the broadcast types of both the SD broadcast and the HD broadcast are not discriminated on the same content program broadcast channel (NO in S15), no operation is performed (S18), and this process is terminated. Here, in the processing of S17, after the OSD unit 4 displays on the monitor screen 11 that there is a channel that broadcasts the same content program in the same time zone in the channel map, the SD broadcast channel is deleted. May be selected by the user.

  As described above, since the SD broadcast channel information included in the same content program broadcast channel can be deleted from the channel map, the SD broadcast channel is not selected for the same content program. A TV program of HD broadcast is displayed on the TV monitor. Therefore, the user can more easily view a TV program with high-quality HD broadcasting.

  In addition, this invention is not restricted to the structure of the said various embodiment, A various deformation | transformation is possible in the range which does not change the meaning of invention. For example, the same processing may be performed when EPG data is updated when the EPG screen is displayed. Further, it may be a TV receiver or a digital video recorder incorporating a tuner function.

1 is a block diagram showing a digital broadcast signal receiving apparatus according to an embodiment of the present invention. The flowchart which shows the channel selection channel switching process in the said receiver. The flowchart which shows the EPG display process in the said receiver. (A) is a figure which shows the EPG screen on which each channel was displayed separately, (b) is a figure which shows the EPG screen on which the same content program broadcast channel was collectively displayed in FIG. 4 (a). The flowchart which shows the channel information deletion process in the said receiver.

Explanation of symbols

1 Digital Broadcasting Signal Receiver 2 Tuner (Receiving means)
3 Decoder part (decoding means)
5 Remote control (operation means)
7 Memory (memory means)
8 CPU (control means)
10 Monitor device (TV monitor)

Claims (3)

Receiving means for receiving a digital broadcast signal composed of an SD (Standard Definition) broadcast signal and an HD (High Definition) broadcast signal distributed from a broadcast station on each channel;
Decoding means for decoding the digital broadcast signal received by the receiving means and outputting SD broadcast data or HD broadcast data including program information to a television monitor connected to the apparatus;
Storage means for storing channel information that can be received by the receiving means as a channel map;
An operation means that is operated by a user and performs channel selection and other various operations based on the channel map;
In the digital broadcast signal receiving apparatus, comprising a control means for controlling each of the above-mentioned units, and displaying a television program broadcast on an SD broadcast channel or an HD broadcast channel on the television monitor in accordance with channel selection by the operation means.
The control means includes
When a channel is selected by the operation means, a television program having the same content in the channel map is selected for the selected channel based on program information held in the SD broadcast data or HD broadcast data by the decoding means. Judge whether there are two or more same content broadcast channels that broadcast in the same time zone,
When it is determined that there is the same content program broadcast channel, the broadcast type of the same content program broadcast channel is determined as to whether it is SD broadcast or HD broadcast,
As a result of the determination, when the selected channel is an SD broadcast channel and there is an HD broadcast channel in the same content program broadcast channel, automatically or according to the operation by the operation means, A digital broadcast signal receiving apparatus characterized by switching a selected channel to an HD broadcast channel included in the same content program broadcast channel. The control means includes
An EPG screen display function for displaying an EPG (Electronic Program Guide) screen comprising a list of TV programs broadcast on each channel on the TV monitor based on the program information;
When an operation for displaying a list of TV programs is performed by the operation means, the determination is made for all channels included in the channel map, and when it is determined that there is a program broadcast channel with the same content, the same The above determination is made for the content program broadcast channel,
As a result of the determination, when both the SD broadcast channel and the HD broadcast channel are in the same content program broadcast channel, the HD broadcast channel included in the channel is regarded as a television program of the same content program broadcast channel. 2. The digital broadcast signal receiving apparatus according to claim 1, wherein only the TV program is displayed on the EPG screen. The control means includes
When a predetermined operation is performed by the operation means, the determination is made for all channels included in the channel map, and when it is determined that there is the same content program broadcast channel, the same content program broadcast channel is determined. Make the determination,
As a result of the determination, when there are both an SD broadcast channel and an HD broadcast channel in the same content program broadcast channel, the same content program is automatically retrieved from the channel map automatically or according to the operation by the operation means. 3. The digital broadcast signal receiving apparatus according to claim 1, wherein information on a channel of SD broadcast included in the broadcast channel is deleted.

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