JP2011114599A - Television receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a user to easily recognize that HD broadcasting is tuned even when SD broadcasting is automatically switched to the HD broadcasting in a television receiver. <P>SOLUTION: When a user tunes a channel (S11), the TV receiver acquires NIT information (S13), and determines whether or not there is switching instruction information for the tuned channel in the acquired NIT information (S14). When there is the switching instruction information, that is for a channel of the SD broadcasting to be switched to a channel of the HD broadcasting (YES in S15), the TV receiver switches to the channel of the HD broadcasting and tunes it, and receives and displays a TV program (S16). Then, a message indicating that the TV receiver has switched to the channel of the HD broadcasting and a message for urging a user to select which of the channel of the SD broadcasting and the channel of the HD broadcasting is to be registered in a channel list are displayed (S17). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a television receiver capable of receiving both HD broadcast and SD broadcast.

  In recent years, for example, in some regions such as Europe, a single broadcast station broadcasts a television program with the same content on both a SD (Standard Definition) broadcast channel and a HD (High Definition) broadcast channel (simultaneous broadcast). There is. In a television (hereinafter referred to as TV) receiver capable of receiving both SD broadcast and HD broadcast, when a television program of the same content is being broadcast simultaneously, based on information in NIT (Network Information Table) information, There is one that automatically switches to an HD broadcast channel and selects a channel (for example, see Patent Document 1).

  FIG. 6 shows an example of HD broadcast channel switching processing in a conventional TV receiver. Presence or absence of information (hereinafter referred to as switching instruction information) such as “HD Simcast”, etc., for the TV receiver to instruct switching within the NIT information when the channel is selected by the user If there is switching instruction information for the selected channel (YES in S101), the HD broadcasting the same content as the SD broadcast channel from the selected SD broadcast channel. Switching to the broadcast channel (S102), the HD broadcast channel is selected and received (S103).

  However, even when the content of the switching instruction information in the NIT information includes an error, the TV receiver automatically switches to the HD broadcast channel and selects a channel, so that a video is not displayed. As a result, the video intended by the user may not be seen. Even in such a case, the user does not know that the channel has been automatically switched from the SD broadcast channel to the HD broadcast channel, and therefore erroneously determines that the channel in which the video is not displayed is selected. For this reason, it is difficult to identify the cause easily, and the TV receiver is not easy to use by a user.

  By the way, in Patent Document 2, NIT information is acquired every predetermined time to acquire logical channel identification information, and when this logical channel identification information and the stored logical channel identification information do not match, the channel information is A digital broadcast receiver that rewrites the acquired logical channel identification information is disclosed. However, even this apparatus cannot solve the above problem.

  Also, in Patent Document 3, a channel list is output for each logical channel divided into SD broadcast and HD broadcast, and the user confirms whether the selected channel is HD broadcast by viewing the list. A broadcast receiving apparatus that can be used is disclosed. However, this broadcast receiving apparatus is inconvenient because the user cannot confirm whether the broadcast is an SD broadcast or an HD broadcast unless the channel list is displayed.

JP 2009-152739 A JP 2009-105793 A JP 2009-177706 A

  The present invention has been made to solve the above-described problems, and it is easy for a user to select an HD broadcast even when the SD broadcast is automatically switched to the HD broadcast. It is an object of the present invention to provide an easy-to-use television receiver.

  In order to achieve the above object, the invention of claim 1 is directed to receiving means for receiving digital broadcast including SD (Standard Definition) broadcast and HD (High Definition) broadcast distributed from a broadcasting station, and receiving by the receiving means. Display means for displaying video of a television program based on the HD broadcast and SD broadcast, and NIT information extraction means for extracting Network Information Table (NIT) information from the transport stream of the digital broadcast received by the reception means; Whether or not the NIT information extracted by the NIT information extracting means includes information (hereinafter referred to as switching instruction information) instructing to receive a television program having the same content by switching from SD broadcasting to HD broadcasting. Switching finger to judge As a result of the determination by the information determining means and the switching instruction information determining means, if there is switching instruction information for the selected channel in the NIT information, the same content television program is switched from SD broadcasting to HD broadcasting. In the television receiver comprising control means for controlling reception, the control means uses the switching instruction information determination means to select the NIT information when the channel is selected by the user. It is determined whether or not there is switching instruction information for the channel that is set, and if there is the switching instruction information, the HD broadcast channel together with the HD broadcast television program for the selected channel is displayed on the display means. A message to the effect that it has been switched to is displayed.

  The invention according to claim 2 further comprises channel list storage means for storing SD broadcast and HD broadcast channels receivable by the receiving means as a channel list in the television receiver according to claim 1, When the channel is selected by the user and the NIT information includes switching instruction information about the channel selected by the user, the control means includes the HD broadcast television program on the display means. A message prompting the user to select which of the SD broadcast channel and the HD broadcast channel is registered in the channel list stored in the channel list storage means is displayed, and the channel selected by the user is displayed in the channel list. To register.

  According to the first aspect of the present invention, when there is the switching instruction information for the selected channel, the display means is switched to the HD broadcast channel together with the HD broadcast television program for the selected channel. A message to that effect is displayed. For this reason, even when the SD broadcast is automatically switched to the HD broadcast, the user can easily know that the channel of the HD broadcast is selected, which is convenient.

  Further, even when, for example, the content of the switching instruction information in the NIT information is incorrect, an erroneous HD broadcast is automatically selected, and a phenomenon in which a video intended by the user is not displayed occurs. Since the user can easily know that the channel of the HD broadcast has been selected, it is easy to identify the cause that the intended video is not displayed, which is convenient.

  According to the invention of claim 2, since the channel selected by the user is registered in the channel list, when the user selects the same channel again, it is prevented that the channel is automatically switched to a channel not intended by the user. Because it can, it is easy to use.

1 is a perspective view of a TV receiver according to an embodiment of the present invention. The block diagram which shows schematic structure of the said TV receiver. The flowchart which shows the procedure of the registration process of the channel list in the said TV receiver. The flowchart which shows the procedure of the channel selection process in the said TV receiver. Explanatory drawing explaining the message displayed on a display in the said channel selection process. The flowchart which shows the procedure of the channel switching process in the conventional TV receiver.

  A television (hereinafter, referred to as TV) receiver according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows the appearance of a TV receiver 1 operated by the remote control device 2, and FIG. 2 shows the internal configuration of the TV receiver 1. The TV receiver 1 is a device that receives and decodes TV programs based on digital broadcasts including SD (Standard Definition) broadcasts and HD (High Definition) broadcasts distributed from broadcast stations and displays them. The remote control device 2 is operated by a user to give various operation instructions to the TV receiver 1.

  The TV receiver 1 includes a display (display unit) 11 that displays a video of a TV program, a speaker 12 that outputs audio of the TV program, and a tuner unit (reception unit) that receives a digital broadcast signal distributed from a broadcasting station. 13, a remote control signal receiving unit 14 that receives an operation signal transmitted from the remote control device 2, a memory (channel list storage unit) 15 that stores various information, and a control microcomputer (control unit) 16 that controls each unit of the device. With.

  The remote control device 2 includes a plurality of buttons 21 operated by the user and a signal transmission unit 22 for transmitting an operation signal corresponding to the operation by the user to the TV receiver 1. By operating the button 21, the user can issue an operation instruction such as channel selection.

  The tuner unit 13 is, for example, an SD broadcast signal encoded by the MPEG-2 system, It has a decoder 13a capable of decoding digital broadcast signals including HD broadcast signals encoded in H.264 format, and receives TV programs distributed from broadcast stations, NIT (Network Information Table) information describing various information, etc. And output to the control microcomputer 16. The NIT information is information based on the DVB SI (Digital Video Broadcast Service Information) standard, and instructs to switch from the SD broadcast channel to the HD broadcast channel when receiving a television program of the same content. Information, for example, information such as “HD Simcast” (hereinafter referred to as switching instruction information) is included.

  The decoder 13a decodes the program stream included in the transport stream of the digital broadcast signal into a video signal and an audio signal. The memory 15 stores a program 15a for operating the control microcomputer 16 and a channel list 15b. The channel list 15 b stores SD broadcast channel information and HD broadcast channel information that can be received by the tuner unit 13. In the case of SD broadcast channel information and HD broadcast channel information, which are simultaneous broadcasts, the channel list 15b stores channel information of either SD broadcast or HD broadcast.

  The control microcomputer 16 includes a video output unit 16a, an audio output unit 16b, a NIT information extraction unit (NIT information extraction unit) 16c, a switching instruction information determination unit (switching instruction information determination unit) 16d, and a channel list management unit. 16e, and performs control processing of a received channel and control processing of a video and a message displayed on the display 11.

  The video output unit 16 a outputs the TV program video and various messages received by the tuner unit 13 to the display 11. The audio output unit 16 b outputs the audio of the TV program received by the tuner unit 13 to the speaker 12.

  The NIT information extraction unit 16 c extracts NIT information from the transport stream received by the tuner unit 13. The switching instruction information determination unit 16d determines whether there is switching instruction information for a predetermined channel in the NIT information extracted by the NIT information extraction unit 16c. The channel list management unit 16e registers channel information in the channel list 15b and updates channel information registered in the channel list 15b.

  Next, channel list registration processing in the TV receiver 1 will be described with reference to the flowchart shown in FIG. Here, it is assumed that channel information is not registered in the channel list 15b.

  First, the control microcomputer 16 performs a so-called initial scan for searching for receivable channel information using the tuner unit 13 (S1). Then, for each channel, NIT information is acquired using the NIT information extraction unit 16c (S2), and the switching instruction information determination unit 16d is used to determine whether switching instruction information is included in the acquired NIT information. When there is the switching instruction information for the corresponding channel, the control microcomputer 16 uses the channel list management unit 16e, and based on the contents of the switching instruction information, the television program having the same content as the SD broadcast channel for the corresponding channel. The HD broadcast channel information is registered in the channel list 15b. On the other hand, when there is no switching instruction information in the NIT information, an SD broadcast channel is registered in the channel list 15b for the corresponding channel (S3).

  Next, channel selection processing in the TV receiver 1 will be described with reference to the flowchart shown in FIG. Here, it is assumed that channel information has already been registered in the channel list 15b by the processing shown in FIG.

  First, when the user selects a channel by operating the operation button 21 of the remote control device 2 (S11), the control microcomputer 16 selects the channel for the first time (YES in S12). The NIT information extraction unit 16c is used to acquire NIT information (S13), and it is determined whether or not the acquired NIT information includes switching instruction information for the channel selected by the user (S14).

  If the result of the determination in S14 is that there is switching instruction information, that is, if the channel selected by the user is a channel for switching the SD broadcast channel to the HD broadcast channel (YES in S15), the control microcomputer 16 Then, the tuner unit 13 is used to switch to and select a channel for HD broadcasting, and a TV program is received and displayed (S16). Then, a message indicating that the channel is switched to the HD broadcast channel and a message prompting the user to select which of the SD broadcast channel information and the HD broadcast channel information is registered in the channel list 15b are displayed. 11 (S17).

  When the channel to be registered in the channel list 15b is selected by the user (S18), the channel information registered in the channel list 15b based on the channel information selected by the user using the channel list management unit 16e. Is updated (S19). On the other hand, if the result of determination in S14 is that there is no switching instruction information (NO in S15), the processing after S16 is not performed.

  Next, an example of a message displayed on the display 11 in the process of S17 will be described with reference to FIG. As shown in FIG. 5, a message “Switched from SD broadcast to HD broadcast. Please select a channel to be registered in the channel list.” Is displayed on the display 11. In the figure, “1” indicates the channel number of the SD broadcast, and “51” indicates the channel number of the HD broadcast. When the user operates the remote controller 2 to select either “1” or “51”, the channel information of the selected channel, for example, channel number information is registered in the channel list 15b.

  As described above, in the TV receiver 1 according to the present embodiment, when there is the switching instruction information for the channel selected by the user, the display 11 includes the HD broadcast television program for the selected channel. A message indicating that the channel has been switched to the HD broadcast channel is displayed. For this reason, even when the SD broadcast is automatically switched to the HD broadcast, the user can easily know that the channel of the HD broadcast is selected, which is convenient.

  Further, even when, for example, the content of the switching instruction information in the NIT information is incorrect, an erroneous HD broadcast is automatically selected, and a phenomenon in which a video intended by the user is not displayed occurs. Since the message indicating that the channel is switched to the HD broadcast channel is displayed on the display 11, the user can easily know that the channel of the HD broadcast is selected, and the intended video is not displayed. It is easy to use because the cause can be easily identified.

  In addition, since the information of the channel selected by the user is registered in the channel list 15b, it is possible to prevent the channel from being automatically switched to a channel not intended by the user when the user selects the same channel again. Is good.

  In addition, this invention is not restricted to the structure of the said embodiment, A various deformation | transformation is possible in the range which does not change the meaning of invention. For example, in the above-described embodiment, an example in which a message indicating that the channel is switched to the HD broadcast channel is displayed on the display to notify the user is not limited thereto. You may alert | report by doing.

1 TV receiver (television receiver)
11 Display (display means)
13 Tuner (Receiving means)
15 Memory (Channel list storage means)
16 Microcomputer for control (control means)
15b Channel list 16c NIT information extraction unit (NIT information extraction means)
16d switching instruction information judging section (switching instruction information judging means)

Claims (2)

Receiving means for receiving digital broadcasting including SD (Standard Definition) broadcasting and HD (High Definition) broadcasting distributed from a broadcasting station;
Display means for displaying video of a television program based on HD broadcast and SD broadcast received by the receiving means;
NIT information extracting means for extracting NIT (Network Information Table) information from the digital broadcast transport stream received by the receiving means;
Whether or not the NIT information extracted by the NIT information extraction means includes information (hereinafter referred to as switching instruction information) that instructs to receive a television program having the same content by switching from SD broadcasting to HD broadcasting. Switching instruction information determining means for determining
As a result of the determination by the switching instruction information determining means, if there is switching instruction information for the selected channel in the NIT information, control is performed so that a television program having the same content is switched from SD broadcasting to HD broadcasting and received. In a television receiver comprising a control means for
The control means includes
When a channel is selected by the user, the switching instruction information determining means is used to determine whether or not there is switching instruction information for the selected channel in the NIT information. If there is a television receiver, the display means displays a message indicating that the channel is switched to the HD broadcast channel together with the HD broadcast television program for the selected channel. Channel list storage means for storing SD broadcast and HD broadcast channels receivable by the receiving means as a channel list;
The control means includes
When a channel is selected by the user, if there is switching instruction information about the channel selected by the user in the NIT information, the SD broadcast channel is displayed on the display means together with the HD broadcast television program. And a message prompting the user to select which of the HD broadcast channels to register in the channel list stored in the channel list storage means,
2. The television receiver according to claim 1, wherein a channel selected by a user is registered in the channel list.

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