JP2009290507A - Digital broadcast receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a user does not always have advantages by performing automatic switching when a one-segment broadcast is not hereafter a simultaneous broadcast any more even though a receiver that simultaneously receives a 12-segment broadcast and the one-segment broadcast is marketed to target a car being a mobile object. <P>SOLUTION: This digital broadcast receiver includes: a separating part for separating data for digital broadcast for fixed terminals and data for digital broadcast for mobiles from received digital broadcast waves; a decoding part for decoding respective separated data; a determining part for determining if a received broadcast is a simultaneous broadcast; a setting part for setting a broadcast to be viewed; and an outputting part for selecting and outputting the broadcast selected by the setting part, wherein in addition, the setting part includes an automatic switching function for automatically switching outputs of the digital broadcast for fixed terminals and the digital broadcast for mobiles to set the effectiveness/ineffectiveness of the automatic switching function by a user operation. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a receiver for receiving terrestrial digital broadcasts, and more particularly to a digital broadcast receiver for switching between broadcasts for fixed receivers and portable receivers.

  In recent years, the terrestrial broadcasting has started to shift to the digital system toward the end of the analog system in 2011, and the service area of the digital broadcasting is now expanding. Digital broadcasting includes 12-segment broadcasting that uses a 12-segment band mainly targeting fixed terminals and 1-segment broadcasting that uses a 1-segment band targeting mobile terminals.

Currently, receivers that can simultaneously receive 12-segment broadcasts and 1-segment broadcasts have been put on the market, mainly for mobile vehicles. These receivers are equipped with a function of automatically switching and receiving 12-segment broadcasting or one segment depending on the state of radio waves (see, for example, Patent Document 1). At present, 12-segment broadcasts and 1-segment broadcasts are obliged to broadcast the same content called simulcast, but the restrictions will be removed after April 2008. Therefore, there is a possibility that each broadcast station company will transmit a 1-segment broadcast having a different content from the 12-segment broadcast.
JP 2007-189497 A

  However, when the one-segment broadcast is no longer a simulcast in the future, it is not always beneficial for the user to switch automatically, and in a moving receiver, every time the receiving broadcast station changes In addition, it is necessary to change the reception setting of the broadcast receiving apparatus.

In view of the above problems, the present invention continues the setting for switching between 12 segments and 1 segment when the same broadcast is being played even if the broadcast station that moves and receives the change is changed.
Also, a digital broadcast receiving apparatus that allows a user to view a desired program by providing a function that allows the user to select a broadcast viewing method when the 12-segment broadcast and the 1-segment broadcast are no longer simultaneous broadcasts. It is an issue to provide.

  In order to solve the above-mentioned problems, the present invention has a means for separating the digital broadcast data for fixed terminals and the digital broadcast data for mobiles from the received digital broadcast wave, and each separated data A decoding unit for decoding the signal, a detection unit for detecting the status of the radio wave being received, an output unit having an automatic switching function for automatically switching the output of the digital broadcast for the fixed terminal and the digital broadcast for the mobile unit, And a setting unit for setting whether to enable / disable switching.

  Preferably, the setting unit determines the output from the output unit using information included in the received digital broadcast or user designation such as a program, a day of the week, and a time zone.

  The second means taken by the present invention in order to solve the above-described problem is a separation unit that separates the digital broadcast data for fixed terminals and the digital broadcast data for mobiles from the received digital broadcast wave; A decoding unit that decodes each separated data, a detection unit that detects the status of the radio wave being received, and a determination unit that determines whether the received broadcast is a simulcast when the radio wave status is bad at the detection unit And an output unit that selects and outputs a broadcast according to the result of the determination unit.

  In addition, preferably, when a broadcast that is not a simulcast is detected by the determination unit, a tuning unit that provides a dedicated interface for selecting a broadcast that is not a simulcast independently is further provided.

  Preferably, the determination unit further includes a notification unit that notifies the user only when a broadcast that is not a simulcast starts is similar to the currently watched broadcast or matches a keyword registered by the user in advance. And

  Preferably, when the non-simult broadcast is terminated by the determination unit, the program further includes a channel selection unit that detects and selects a currently receivable program, and a program similar to the non-simal broadcast with the channel selection unit terminated. In some cases, the program is selected.

  As described above, according to the present invention, the digital broadcast for fixed terminals and the digital broadcast for mobiles are switched so that the program can be continuously viewed when performing the simulcast, and when not being simulcast, Depending on user settings, it is possible to view a desired event.

(Embodiment 1)
Hereinafter, a first best mode for carrying out the present invention will be described with reference to the drawings. FIG. 1 shows a configuration of a digital broadcast receiving apparatus according to the present invention. This apparatus receives a plurality of hierarchical digital broadcast waves (for example, a fixed broadcast consisting of 12 segments and a mobile broadcast consisting of 1 segment), and a broadcast receiving unit 101 that detects the intensity of the received radio waves, A broadcast separation unit 102 that separates digital broadcasts composed of a plurality of layers, a fixed broadcast decoding unit 103 that decodes digital broadcasts for fixed terminals, which is one of the plurality of layers, and another one of the plurality of layers. A mobile broadcast decoding unit 104 that decodes a digital broadcast for a mobile terminal, an output switching unit 105 that selects and outputs an output of the fixed broadcast decoding unit 103 or the mobile broadcast decoding unit 104, and a user at the time of reception For example, the user I / F unit 106 that inputs a signal from an external input device (not shown) such as a remote controller and the operation of the output switching unit 105 for setting the operation are set. And a broadcast switching method setting unit 107 that.

  Although not shown in FIG. 1, in the digital broadcast receiving apparatus of the present invention, the output switching unit 105 selects the output of either the fixed broadcast decoding unit 103 or the mobile broadcast decoding unit 104 as the timing. For example, it is conceivable to switch to the case where the intensity of the radio wave detected by the broadcast receiving unit 101 becomes a predetermined value or less in a state where the fixed broadcast decoded by the fixed broadcast decoding unit 103 is received. . Here, the case where the intensity of the radio wave is equal to or lower than a predetermined value does not only indicate a state where the fixed broadcast is completely unreceivable, but also includes a state where the fixed broadcast is difficult to receive in advance.

  However, the present invention is not limited to this. As a method other than the actual measurement of radio wave intensity, information on the radio wave intensity for each region is provided in advance in a memory, and the current digital It is also possible to measure the intensity of radio waves by acquiring the position information of the broadcast receiving device. In the present invention, in addition to the method of directly measuring the intensity of the radio wave, the detection means detects the intensity of the radio wave including the method of indirectly measuring the intensity of the radio wave.

  The operation of the digital broadcast receiving apparatus having the above configuration will be described. A digital broadcast wave received by the broadcast receiving unit 101 is separated into a digital broadcast for a fixed terminal and a digital broadcast for a mobile unit by a broadcast separation unit 102. Each separated signal is decoded by fixed broadcast decoding section 103 and mobile broadcast decoding section 104 and output to output switching section 105.

  Here, the output switching unit 105 switches between the output of the fixed terminal digital broadcast and the mobile digital broadcast according to the radio wave intensity detected by the broadcast receiving unit 101. In this embodiment, The validity / invalidity of the switching function setting is realized when the broadcast switching method setting unit 107 determines and sets the output switching unit 105 according to the content set by the user via the user I / F unit 106.

  On the other hand, the data separated by the broadcast separation unit 102 is also output to the broadcast switching method setting unit 107. In the broadcast switching method setting unit 107, based on the data sent from the broadcast separation unit 102, for example, the validity / invalidity of the switching function is set in network_id described in NIT, terrestrial_broadcaster_id described in BIT, or SDT. The service_id described is used so that the setting in the user I / F unit 106 can actually be set in these units.

  For example, in order to cope with a case where the radio wave state changes due to movement, the automatic switching setting is expanded. That is, this automatic switching setting can be applied not only to the currently received broadcast but also to a broadcast that is assumed to be the same broadcast. As a result, the number of times the user actually sets through the user I / F can be reduced.

In the above embodiment, the information in the broadcast signal is used. However, the same function may be realized by using a program, a day of the week, or a time zone, or a combination thereof. It is characterized by setting
(Embodiment 2)
Hereinafter, a first best mode for carrying out the present invention will be described with reference to the drawings. FIG. 2 shows a configuration of a digital broadcast receiving apparatus according to the present invention. This apparatus outputs the configuration of the first embodiment instead of the simulcast determination unit 207 and the broadcast switching method setting unit 107 that determine whether the broadcast contents of the digital broadcast for fixed terminals and the digital broadcast for mobile units are the same. A simulcast switching setting unit 208 that performs switching setting of the switching unit 105 is provided.

  The operation of the digital broadcast receiving apparatus having the above configuration will be described. A digital broadcast wave received by the broadcast receiving unit 101 is separated into a digital broadcast for a fixed terminal and a digital broadcast for a mobile unit by a broadcast separation unit 102. Each separated signal is decoded by fixed broadcast decoding section 103 and mobile broadcast decoding section 104 and output to output switching section 105.

  On the other hand, the data separated by the broadcast separation unit 102 is also output to the simultaneous broadcast determination unit 207. The simulcast determination unit 207 determines whether the currently received broadcast is a simulcast or not and outputs it to the simulcast switching method setting unit 208 when the radio wave intensity detected by the broadcast receiving unit 101 is weak. As a determination method in the simulcast determination unit 207, for example, a method of comparing the program content included in the fixed terminal digital broadcast and the program content included in the mobile digital broadcast is conceivable, but other methods ( For example, the digital broadcast wave itself includes flag information indicating whether or not it is simulcast, and the flag information can be determined by the simulcast determination unit. In short, it suffices if it is possible to determine whether the broadcast content of the fixed terminal digital broadcast and the mobile digital broadcast is the same. Further, the data sent from the broadcast separation unit 102 to the simulcast determination unit 207 only needs to be sent for data necessary for determination.

  In addition, the output switching unit 105 determines whether the output of the digital broadcast for the fixed terminal and the digital broadcast for the mobile unit is switched by the simulcast switching setting unit 208 according to the content set by the user via the user I / F unit 107. This is realized by setting in the output switching unit 105.

  A specific operation of the simulcast switching setting unit 208 will be described here. For example, validity / invalidity of the “automatic switching function for automatically switching the output of digital broadcasting for fixed terminals and digital broadcasting for mobile units” held by the simulcast switching setting unit 208 via the user I / F unit 107 is set. Suppose.

  In the simultaneous broadcast switching setting unit 208, when the automatic switching setting is valid and the determination result in the simultaneous broadcast determination unit 206 is simultaneous, the output of the digital broadcast for the fixed terminal and the digital broadcast for the mobile unit according to the reception state The output switching unit 105 is controlled so as to switch automatically. Furthermore, if the automatic switching setting is invalid, the determination result in the simultaneous broadcast determination unit 207 is not simultaneous, or the radio wave condition is good and simulcast detection is not performed, the broadcast designated by the user is continued. Output.

  In this example, the automatic switching setting described in the first embodiment can be similarly extended.

  Note that the broadcast information may be detected by the simulcast determination unit 207 in actual broadcasting, or the simulcast switching is performed by inputting the output of the broadcast separation unit 102 to the simulcast switching setting unit 208 in FIG. It may be performed by the unit 208, or may be detected by the broadcast separating unit 102 and transmitted to the simultaneous broadcast switching unit 208.

  In the above embodiment, when the simulcast determination unit 207 detects that the broadcast is not simulcast, the user I / F unit 106 is assigned a channel number of a remote control that is not currently used, for example. It is also possible to realize a configuration in which a dedicated user I / F is provided, such as enabling it. In this case, the dedicated user I / F may be anything as long as it can be detected by the user, and is not limited to the remote controller and is arbitrary.

  Furthermore, without providing a dedicated I / F, for example, it is possible to notify the user with a pop-up, for example, and the notification is similar to the program currently being viewed so as not to disturb the user's viewing, or It is also possible to realize an extension such as notifying only when a keyword registered in advance as user preference information is matched.

  Further, when a broadcast that is not a simulcast is actually being watched, it is also possible to realize an extension such as automatically displaying a program similar to the program currently being watched after the broadcast ends.

  In the present invention, for the sake of simplification of explanation, the description has been made for a fixed receiver and a portable receiver. However, the present invention is not limited to this and receives broadcast waves of a plurality of different broadcasting systems. It can be applied to Moreover, although the broadcast wave was demonstrated, this invention is not limited to this, It is applicable also when the data can be received via communication. In the above description, two broadcast waves have been described for the sake of simplification. However, the present invention is not limited to this, and can be applied to three or more broadcast waves. .

  The digital broadcast receiver according to the present invention is useful as a digital broadcast receiver that receives both broadcasts for fixed receivers and portable receivers.

1 is a first block diagram of a digital broadcast receiver according to the present invention. Second block diagram of a digital broadcast receiver according to the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 101 Broadcast receiving part 102 Broadcast separation part 103 Fixed broadcast decoding part 104 Mobile broadcast decoding part 105 Output switching part 106 User I / F part 107 Broadcast switching method setting part 207 Simultaneous broadcast determination part 208 Simultaneous broadcast switching method setting part

Claims (9)

A digital broadcast receiving apparatus capable of receiving a plurality of different levels of broadcasts,
Receiving means for receiving broadcasts of the first hierarchy and the second hierarchy;
Decoding means for decoding the first and second layer broadcasts received by the receiving means;
Detecting means for detecting the intensity of broadcast radio waves being received by the receiving means;
Output means having an automatic switching function for automatically switching and outputting either the first or second hierarchy decoded by the decoding means in accordance with the radio wave intensity at the detection means;
A digital broadcast receiving apparatus, comprising: an information setting unit for a user to specify whether the automatic switching function is enabled or disabled in the output unit. The information setting means sets the automatic switching validity / invalidity in units of network_id described in NIT included in digital broadcasting, terrestrial_broadcaster_id described in BIT, or service_id described in SDT. 2. The digital broadcast receiver according to claim 1, wherein the digital broadcast receiver is set. The digital information according to claim 1, wherein the information setting means sets the automatic switching valid / invalid setting by a user specifying a program, a day of the week, a time zone, or a combination thereof. Broadcast receiving device. A digital broadcast receiving apparatus capable of receiving a plurality of different levels of broadcasts,
Receiving means for receiving broadcasts of the first hierarchy and the second hierarchy;
Decoding means for decoding the first and second layer broadcasts received by the receiving means;
Detecting means for detecting the intensity of broadcast radio waves being received by the receiving means;
Output means for selecting and outputting either the first or second hierarchy decoded by the decoding means;
A discriminating means for discriminating whether or not broadcast contents in the first and second hierarchies are the same when the intensity of radio waves of the first broadcast is weak in the detecting means;
A digital broadcast receiving apparatus characterized in that, when it is judged by the discriminating means to be the same, the second hierarchy broadcast is selected by the output means, and otherwise the first hierarchy broadcast is selected by the output means. 5. The channel selection unit according to claim 4, further comprising a channel selection unit that provides a dedicated user interface for independently selecting a channel that is not a simulcast when the discriminating unit detects a broadcast that is not a simulcast. Digital broadcast receiver. 5. The digital broadcast receiving apparatus according to claim 4, further comprising notification means for notifying a user when the determination means detects the start of broadcast that is not simulcast. 7. The digital broadcast receiving apparatus according to claim 6, wherein the notification means notifies only when the broadcast content currently being viewed is similar to the broadcast content or matches the preference information registered in advance by the user. 5. The digital broadcast receiving apparatus according to claim 4, further comprising a channel selection unit that detects and selects a currently receivable program when a broadcast that is not a simulcast is terminated by the determination unit. 9. The digital broadcast receiving apparatus according to claim 8, wherein when there is a program similar to the broadcast that is not the simulcast, the channel selection unit selects the program.

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