JP2006319911A - Broadcast receiver, control method for broadcast receiver, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a broadcast receiver 55 rationally dealing with the situation where there are a plurality of user choices for one function, user choices effective in each broadcasting mode are different, and it is entrusted to a user which user choice is to be selected in each broadcasting mode. <P>SOLUTION: The broadcast receiver 55 outputs broadcast contents of a reception broadcast for the reception broadcast to which one carrier frequency is allocated, transmitted in a predetermined transmission mode. A broadcasting mode detecting means 56 detects the transmission mode of a reception broadcast selected at present and a broadcasting mode of the transmission mode. A choice selection means 57 selects as an effective user choice a user choice that is effective in the broadcasting mode of the reception broadcast selected at present, among user choices relating to a predetermined function prepared for the transmission mode. A user selection limiting means 58 limits freely user-selected user choices to effective user choices. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a broadcast receiver such as an HD (High Definition) radio, a broadcast receiver control method and a program applied to the radio, and the like. The present invention relates to a receiver control method and program.

  Broadcast receivers such as radio and television are compatible with a plurality of transmission modes (for example, AM, FM, VHF, and satellite broadcasting), and can receive broadcasts in each transmission mode and output audio and / or video. There is something. The broadcast receiver is equipped with various functions, but the functions used for each transmission mode are different. Further, the transmission mode includes a plurality of broadcast modes (eg, IBOC broadcast, TR broadcast, etc. when the transmission mode is IBOC; IBOC broadcast and TR broadcast will be described later), and each transmission mode for each function. The user options in are mixed with those effective in all broadcasting modes and those effective only in one or more predetermined broadcasting modes.

  Japanese Patent Application Laid-Open No. 2004-151867 detects whether a program that is currently being broadcast for a selected digital broadcast is a music broadcast or an audio broadcast from M / S mode information, On the other hand, the automatic switching to an appropriate volume is disclosed.

  Patent Document 2 detects the genre (for example, FIG. 2 of Patent Document 2) of the currently broadcast program for the selected digital broadcast, and switches the sound field to one suitable for the genre of each program. Disclosure.

Patent Document 3 detects the genre (for example, the animation in FIG. 2 of Patent Document 2) of the currently broadcasted digital TV broadcast for the selected digital TV broadcast, and sets the output video and output audio to the genre of each program. It is disclosed to switch to a suitable one.
JP-A-6-13925 JP 2002-314447 A JP 2002-118769 A

  In the conventional broadcast receiver, when the transmission mode includes a plurality of broadcast modes, the user grasps the broadcast mode of the currently selected received broadcast based on the display information of the display and the like for each function. The user mode is determined based on his / her knowledge, and the user's favorite user option is selected from the effective user options. Knowledge of effective user options is required, the burden on the user increases, and incorrect user selection is likely to occur.

  In the process of turning on or off a function, it is sufficient to detect a transmission mode or a broadcast mode and switch the function to on or off based on the detection. Broadcast receiver processing that reasonably addresses this when there are different user options, the effective user options in each broadcast mode are different, and the user option to be selected in each broadcast mode is left to the user Is complicated.

  Furthermore, there are cases where the broadcast mode is changed or the reception environment of the digital broadcast changes with the movement of the automobile without the user switching the selected reception broadcast or switching the selective reception broadcast. In such a case, an option that was an appropriate user selection before switching, before changing, and before changing may become inconvenient after switching, after changing, and after changing.

  Although the broadcast receivers of Patent Documents 1 to 3 are useful for suggesting a function that can be switched on and off automatically regardless of the user's preference, there are a plurality of user options for one function, and each broadcast mode is effective. However, it is not possible to reasonably cope with a situation in which different user options are different and it is left to the user which user option to select in each broadcast mode.

  An object of the present invention is to appropriately deal with such a situation and to allow a user to efficiently select his / her favorite user options while ensuring selection of user-selectable options in each broadcast mode. A broadcast receiver, a control method for the broadcast receiver, and a program are provided.

The broadcast receiver of the present invention can output the broadcast content of the received broadcast to the received broadcast that is assigned with one carrier frequency and transmitted in a predetermined transmission mode. The broadcast receiver of the present invention has the following.
A transmission mode of the currently selected reception broadcast, and a broadcast mode detection means for detecting the broadcast mode of the transmission mode;
User option selection means for selecting a user option related to a predetermined function prepared for the transmission mode, which is effective in the currently selected reception broadcast mode, as an effective user option, and a user selectable user User selection limiting means for limiting options to only valid user options.

The broadcast receiver control method of the present invention includes the following steps.
Detecting the transmission mode of the currently selected reception broadcast and the broadcast mode of the transmission mode;
Of the user options related to a predetermined function prepared for the transmission mode, a step that selects an effective user option in the currently selected reception broadcast mode, and a user-selectable user option are enabled. The step of limiting to user choices only.

  The program of the present invention causes a computer to function as each means of the broadcast receiver of the present invention.

  According to the present invention, the user grasps the broadcast mode of the currently selected received broadcast on the basis of the predetermined display information, and among the plurality of user options determined to be effective for the broadcast mode based on the knowledge. The user is freed from the troublesome and error-prone work of selecting a desired user option.

  According to the present invention, the user can be guaranteed to select a favorite option from all options that are valid in each broadcast mode.

  FIG. 1 is a configuration diagram of an HD (High Definition) radio 10. The HD radio 10 supports reception in the IBOC transmission mode. The broadcast mode of the radio broadcast of the analog FM broadcast alone may be handled as an example of the broadcast mode of the IBOC transmission mode in the output processing of the broadcast content of the radio broadcast, that is, the broadcast mode of the IBOC transmission mode. Among them, the HD radio 10 that can be handled as a broadcast mode that does not include a digital broadcast, and that supports reception of the IBOC transmission mode, can output audio of an analog FM broadcast alone as well as a radio broadcast in the IBOC transmission mode. It has become. The HD radio 10 is also equipped with an AM tuner, and can output the broadcast content of AM analog broadcasts by switching the transmission mode of the user. The HD radio 10 is not limited to a mobile type mounted on a car or carried by a person, for example, and may be a type that is not portable and can be installed in a house.

  The input device 11 is operated by a user and sends user operation information to the main controller 12. The tuner 13 selects the corresponding received broadcast based on the channel selection information from the main controller 12 and outputs an intermediate frequency signal of the received broadcast to the analog / digital demodulator 14. The analog / digital demodulator 14 demodulates the intermediate frequency signal from the tuner 13, converts the demodulated signal into a digital signal, performs predetermined decoding, and extracts the predetermined frequency extracted based on the audio selection information from the main controller 12. Are sent to the voice processing / output device 15. The analog / digital demodulator 14 also sends the extracted text data to the main controller 12. The audio processing / output device 15 includes, for example, a speaker, and outputs audio related to the audio signal from the analog / digital demodulator 14 at a volume adjusted by the user. The display control unit 16 controls the display content and display mode on the display device 17 based on the control information and display content information from the main controller 12.

  An outline of the IBOC transmission mode will be described. In the IBOC transmission mode, as a broadcast mode, a hybrid broadcast including one analog broadcast portion and one digital broadcast portion (hereinafter simply referred to as “IBOC broadcast”), a single digital broadcast portion full digital broadcast, one Analog audio is given priority to broadcast content where real-time performance is important, such as Tomorrow Radio broadcast (hereinafter referred to as “TR broadcast”), which includes an analog broadcast portion and a plurality of digital broadcast portions. Non-Delay broadcast (hereinafter also referred to as “BallGame broadcast” as appropriate). The IBOC broadcast station may change the broadcast mode as appropriate according to the contents of the broadcast program.

  Some HD radios 10 have a function called “reception mode switching” as a function unique to the IBOC transmission mode. In IBOC broadcasting, digital audio and analog audio are broadcast simultaneously, and the HD radio 10 fades in and fades out the analog and digital audio according to the signal reception state, thereby making the user feel uncomfortable. Smooth switching is performed so as not to occur (detailed in “AUTO switching” described later).

  The “reception mode switching” function has three setting parameters (= user options) of “forced digital”, “AUTO (automatic) switching”, and “forced analog”, and the user is listening to the IBOC broadcast. In some cases, analog or digital audio can be freely selected. Note that “AUTO switching” is a setting parameter that allows the user to automatically switch analog or digital audio to the HD radio 10 based on the received electric field strength level. Also, some broadcast receivers have only two setting parameters, “AUTO switching” and “forced analog”, and the “reception mode switching” function is assigned to a dedicated key on the operation panel. Some switch between “AUTO switching” and “forced analog”. In the “reception mode switching” function, one of a plurality of setting parameters (= user options) is always set, and after the HD radio 10 is initialized, the selected setting parameter is automatically changed to other setting parameters. However, it is changed only when the user changes the setting parameter to be selected.

  However, the IBOC transmission mode considers coexistence with the infrastructure of the conventional single analog broadcast, and the HD radio 10 can receive and output the conventional single analog broadcast. As described above, the IBOC transmission mode includes various broadcasting modes such as full digital broadcasting, TR broadcasting, and non-delay broadcasting in addition to IBOC broadcasting. The setting parameter of the “reception mode switching” function may interfere with output due to a change in the broadcast mode or the reception environment (of the digital broadcast portion).

  As an example, full digital broadcast is not a simulcast but a digital-only broadcast, so “forced analog” in the three setting parameters of the “reception mode switching” function with a conventional analog radio receiver or HD radio. When is selected, only the noise sound is output when synchronized with the reception broadcast of the full digital broadcast. Therefore, even if the user switches the channel selection to a broadcasting station that performs full digital broadcasting, the user is not even aware that the broadcasting is being performed. In addition, when the user selects a setting parameter of “AUTO switching” or “forced digital” and the broadcast mode is full digital broadcasting, the setting parameter of the “reception mode switching” function is switched to “forced analog”. Similarly, only noise sound is output.

  In order to prevent such an inappropriate selection state, in the conventional HD radio, the user himself / herself grasps the change in the broadcast mode of the currently selected received broadcast, and is considered inappropriate for the current broadcast mode. It is important to determine what the plurality of setting parameters should not be based on one's own knowledge and appropriately switch from the setting parameters to a desired one.

  On the other hand, the HD radio 10 notifies the user that the setting parameter currently selected by the user is inappropriate, or notifies the user of a message that assists the user in changing to a setting parameter that does not hinder the user. To do.

  FIG. 2 is an explanatory diagram of the broadcast mode grouping method 20 in the IBOC transmission mode. The analog / digital demodulator 14 performs periodic boring on the selected received broadcast, detects the received electric field strength level of the analog signal portion of the received broadcast by the polling, and digitally transmits the received broadcast. Broadcast mode information demodulated from the signal part is acquired (S21). In S22, the received broadcast is distributed to one of the corresponding M1 to M6 based on the acquired broadcast mode information.

  M1 to M6 are divided into three groups A to C based on the effective setting parameters of each broadcast mode in the “reception mode switching” function, for example. That is, M1 and M2 are assigned to group A, M3 and M4 are assigned to group B, and M5 and M6 are assigned to group C. Group A is a group in a broadcast mode that encourages users to listen to analog broadcasts. Group B is a group of broadcast modes in which the broadcast mode includes both analog broadcast and digital broadcast, and the user recommends selecting analog broadcast or digital broadcast according to his / her preference. Group C is a group in a broadcast mode that encourages users to listen to digital broadcasts. In this case, the reception mode should not be forced digital when the group A broadcast is selected, and the reception mode should not be forced analog when the group C broadcast is received. In order to prevent this, for example, during the period when the received broadcast of group A is selected, the forced digital setting parameter is deleted from the setting parameters related to the “reception mode switching” function on the user selection screen, Or it cannot be selected.

  FIG. 3 shows a setting parameter selection screen for the “reception mode switching” function during the period when the group A reception broadcast is selected. The touch panel display 30 is an example of the display device 17 of FIG. The touch panel display 30 is equipped with a color touch panel 32 and an operation member row arranged in the left-right direction along the lower side of the lower side of the color touch panel 32 on the front panel 31. The operation member row includes a rectangular key 33, a circular key 34, a screen switching key 35, and a volume control knob 36 from left to right.

  The color touch panel 32 of FIG. 3 includes a main screen 40 and a setting parameter selection screen 41. When it is called, the setting parameter selection screen 41 is displayed on the front side of the main screen 40. The setting parameter selection screen 41 displays the currently selected received broadcast frequency (for example, 100.1 MHz) and the current Text information of the program being output (in the example of FIG. 3, the analog broadcast single broadcast without text information is selected) is displayed. The setting parameter selection screen 41 is for the “reception mode switching” function. As described above, the setting parameters of the “reception mode switching” function include “forced digital”, “AUTO switching”, and “forced analog”. There are three setting parameters. The setting parameter selection screen 41 in FIG. 3 is a setting parameter selection screen during a period in which the reception broadcast of the group A is selected, and “forced digital” is disabled.

  In FIG. 3, because the colors and shades cannot be expressed due to the limitations of the monochrome drawing, the characters “● forced digital” on the setting parameter selection screen 41 are not distinguished from the selection effective setting parameters by color or shade. It is distinguished by italic letters. On the actual setting parameter selection screen 41, the selection invalid setting parameter is represented by, for example, white, light color, or no display, and is identified to the user with respect to the selection effective setting parameter. Also, display a message using the balloon 44. “Forced digital” can also inform the user that it is currently an invalid configuration parameter.

  The user can select the effective setting parameter by touching the area of the effective setting parameter on the setting parameter selection screen 41 of the color touch panel 32 with a finger.

  In the period in which the reception broadcast of the group A analog broadcast alone is selected, two setting parameters “forced analog” and “AUTO switching” are selectable (valid). The setting parameter of “AUTO” is selectable even though there is no digital broadcast. In “AUTO switching”, the digital broadcast is preferentially selected, but the digital broadcast When there is a problem in the output of the digital broadcast, the digital broadcast is automatically switched to the analog broadcast. Since the selection period of the reception broadcast of the analog broadcast alone corresponds to this, “AUTO switch” is selected by the user. Even if it is, analog broadcasting will be output without trouble, and there will be no inconvenience.

  On the setting parameter selection screen 41 during the period when the group B received broadcast is selected, all three setting parameters of “forced digital”, “AUTO switching”, and “forced analog” are selectable (valid). .

  On the setting parameter selection screen 41 during the period when the group C received broadcast is selected, only the setting parameter of “forced analog” is deleted (not displayed) from the user selection screen or cannot be selected.

  On the other hand, there is a case where a current setting parameter falls into an inappropriate one due to a change in reception environment, switching of a broadcast mode by a broadcast station, or selection change of a received broadcast. For example, when the user selects “Forced analog” as the setting parameter of the “Receive mode switching” function due to a weak electric field or the like, another frequency is sought or the reception status of the digital broadcast changes. It can be considered that the reception state of the IBOC broadcast becomes good or the TR broadcast or the like starts due to a program change. In this case, if the setting parameter being selected in the “reception mode switching” function remains “forced analog”, the user does not notice the switching of the digital broadcast to the reception broadcast, and narrows the user's options. In order to prevent this, the analog / digital demodulator 14 periodically measures the received electric field strength level and acquires the broadcast mode information for each of the analog broadcast and the digital broadcast. If there is a setting parameter more appropriate than the currently selected setting parameter, the user is immediately notified of it. Such notification can be performed, for example, by arranging a predetermined indicator on the display device 17 and lighting it or displaying a message.

  The selection of the setting parameter of the “reception mode switching” function has been described. However, the function other than the “reception mode switching” function and the effective setting parameter for each broadcast mode is different from each other. And grouping of broadcast modes based on the relationship between each broadcast mode, and preventing inappropriate setting parameters from being selected by the user for each group, Since the setting parameters become inappropriate due to subsequent changes in the situation, a display prompting the user to change to an appropriate setting parameter is performed. In this way, even if the user does not sufficiently grasp the currently selected broadcast mode of the received broadcast, it is possible to provide a user interface that realizes an appropriate and efficient operation with respect to a change in situation.

  User options for setting parameters in a function different from the “reception mode switching” function will be described. In the display device 17 of the in-vehicle HD radio 10 such as the touch panel display 30 in FIG. 3, the display area is limited, and efficient information presentation to the display device 17 having a small display area is desired. "Function is provided. The user can select and display desired information on a display unit such as the color touch panel 32 (FIG. 3) by selecting a setting parameter in the “display display mode switching” function. In addition, in order to display a large amount of information at the same time, there is an HD radio 10 in which a predetermined number of lines of 4 or less and display information on each line can be selected as setting parameters. For example, text information such as a broadcast station name, SongTitle (music title), indicator information such as stereo display, additional information such as TR broadcast channel configuration information, and the like are associated as setting parameters of the “display display mode switching” function. . This information is not always acquired in all broadcast modes. If it cannot be acquired or is not displayed, conventional HD radio displays basic information such as frequency information in the display area or blanks. I was doing it. A display area that displays nothing is useless for a display area with a limited area, and the user needs to understand the reason why the display is not performed from the broadcast mode.

  FIG. 4 is an explanatory diagram of setting parameters related to the “display display mode switching” function and broadcast modes applied to the setting parameters. In each display mode from DA to DE (each display mode corresponds to one setting parameter), the number of display lines is determined within the range from 1 to 4 lines, and the content of the display information is also determined. It has been. The applied broadcast mode is each broadcast mode from M1 to M6 in FIG. 2 in which each display mode DA to DE is valid. Each large-size bold broadcasting mode indicates that the display mode in the same row as that is the optimum display mode.

  For example, when the broadcast mode of the selective reception broadcast in the HD radio 10 is IBOC broadcast, only the display modes DA to DD are effective display modes. Further, when the broadcast mode of the selective reception broadcast is IBOC broadcast, if the user has selected DA, DB, or DD, the user is notified by an indicator or a message that the optimum display mode is DC.

  Although the selective reception broadcast is not changed, when the broadcast mode of the selective reception broadcast is switched from the IBOC broadcast to the TR broadcast, DA to DE are set to the effective display mode, and this and the optimum display mode are DB. It is notified to the user by an indicator or a message. Such an operation does not restrict the setting parameters to be selected by the user excessively, and allows the user to set the optimum setting parameters for each broadcasting mode while ensuring the user selection space for the setting parameters that can be selected by the user. Guide the user to select and avoid selecting inappropriate configuration parameters.

  FIG. 5 is a functional block diagram of the broadcast receiver 55. The broadcast receiver 55 can output the broadcast content of the received broadcast for a received broadcast that is assigned with one carrier frequency and transmitted in a predetermined transmission mode. The broadcast receiver 55 includes broadcast mode detection means 56, option selection means 57, and user selection restriction means 58. Broadcast mode detection means 56 detects the transmission mode of the currently selected reception broadcast and the broadcast mode of the transmission mode. The option selection means 57 selects, as effective user options, those that are effective in the broadcast mode of the currently selected received broadcast among user options related to the predetermined function prepared for the transmission mode. The user selection restriction unit 58 restricts user options that can be selected by the user to valid user options.

  An example of the broadcast receiver 55 is the HD radio 10 (FIG. 1). The reception broadcast transmission mode is, for example, an IBOC transmission mode. The broadcast receiver 55 is not limited to a radio broadcast receiver, and may be a television broadcast receiver. The broadcast receiver 55 includes an HD radio mounted on a car in particular. The user option corresponds to the setting parameter used in the description of the HD radio 10. There are various restriction modes by the user selection restriction means 58. For example, on the user option screen where the user selects a desired user option, the invalid user option may be excluded and only the valid user option may be displayed. However, even if the user selects an invalid user option, the user option may be ignored and the limitation by the user selection limiting unit 58 may be realized.

  The broadcast receiver 55 is different from the on / off automatic switching in each broadcast mode for each function, and the user selects a desired user option from a plurality of user options effective for each function in each broadcast mode. It is supposed to be selected. The broadcast receiver 55 allows the user to select user options that are valid in the current broadcast mode for the functions prepared in the currently selected reception broadcast transmission mode. In the broadcast mode, it is possible to guarantee a selection environment in which a user's favorite one can be selected from the maximum user options.

  In addition, the user is freed from the burden of having to know the broadcast mode of the currently selected received broadcast and having to know the relationship between the broadcast mode and effective user options for each function. It is possible to select a desired user option efficiently and with few errors from effective user options in the broadcast mode of the received broadcast.

  The broadcast receiver 55 will be described more specifically.

  The broadcast mode of the predetermined transmission mode includes a first broadcast mode including only analog broadcast, a second broadcast mode including one analog broadcast and one digital broadcast, a third broadcast mode including only digital broadcast, and one A fourth broadcast mode including analog broadcast and a plurality of digital broadcasts, and a fifth broadcast mode including analog broadcast and digital broadcast one by one, but outputting analog broadcast with priority. When the transmission mode is the IBOC transmission mode, the first broadcast mode is analog single broadcast, the second broadcast mode is IBOC broadcast, the third broadcast mode is full digital broadcast, the fourth broadcast mode is TR broadcast, The broadcast mode 5 corresponds to non-delay broadcast.

  User options related to a predetermined function include forced digital to select and output a digital broadcast in the currently selected received broadcast, forced analog to select and output an analog broadcast in the currently selected received broadcast, and If there is no problem in the output of the digital broadcast in the currently selected received broadcast, automatic (AUTO) switching that outputs the digital broadcast with priority over the analog broadcast is included. When the transmission mode is the IBOC transmission mode, the predetermined function is the “reception mode switching” function described above.

  The user option is a user option related to the number of lines when information related to the broadcast content currently being output is displayed on the display. The above-described display modes DA to DE in FIG. 4 correspond to each user option related to the number of rows when displayed on the display.

  The broadcast receiver 55 further includes the most recommended option notification means 61. The most recommended option notification means 61 notifies the user of the most recommended user option among a plurality of user options effective for the current broadcast mode. In FIG. 4 described above, the broadcast mode on the same line as the bold broadcast mode in the applicable broadcast mode is a display mode as a recommended user option for the bold broadcast mode. The notification by the most recommended option notification means 61 may be either audio or video.

  The broadcast receiver 55 further has option display means 63. The option display means 63 displays a plurality of user options effective for the current broadcast mode in the recommended order on the user selection screen of user options. The user selects the user for the effective user option with reference to the recommended order presented by the option display means 63 on the user option user selection screen. The setting parameter selection screen 41 in FIG. 3 is an example in which valid user options are arranged from the upper order to the lower order in the recommended order. In the period in which the received broadcast of the group A is selected, the first place in the recommended order is “forced analog”. The second place is “AUTO switching”. This allows each user to hesitate to push through his / her choices if the user's desired user options are in the lower order of the recommended order, and to select the higher user option in the recommended order. There is expected.

  The broadcast receiver 55 further includes first situation change detection means 66 and first situation change notification means 67. The first situation change detection means 66 is currently selected by the user in accordance with a change in the currently selected received broadcast, a change in the transmission mode of the currently selected received broadcast, or a deterioration in the reception environment of the currently selected received broadcast. It is detected that the selected user option is an inappropriate user option. The first situation change notification means 67 notifies the user that the user option currently selected by the user has become an inappropriate user option.

  For example, when the received broadcast to be selected is changed, when the broadcast mode before and after the change are full digital broadcast and single analog broadcast, respectively, and the user option being selected by the user is “forced digital”, In broadcast mode, output is disabled. Even if the currently selected received broadcast is not changed, the broadcast mode of the received broadcast is changed from, for example, TR broadcast to full digital broadcast, and the user option currently selected by the user is “forced analog”. In later broadcast modes, output is disabled. Further, for example, when the transmission mode of the currently selected reception broadcast is IBOC broadcast and the user option currently selected by the user is “forced digital”, the analog broadcast can be output without any problem as the reception electric field strength decreases. Despite being possible, digital broadcasting cannot be output. The user can be notified of the appearance of such an output impossible situation from the first situation change notifying unit 67 and respond to the situation change. The notification by the first status change notification means 67 may be either audio or video.

  The broadcast receiver 55 further includes second situation change detection means 70 and second situation change notification means 71. The second situation change detection means 70 is currently selected by the user in accordance with a change in the currently selected received broadcast, a change in the transmission mode of the currently selected received broadcast, or an improvement in the reception environment of the currently selected received broadcast. It is detected that a user option that is more appropriate than the user option that has been set has appeared. The second situation change notification means 71 notifies the user that a user option more appropriate than the user option currently selected by the user has appeared.

  For example, when changing the selected received broadcast, if the broadcast mode before and after the change are independent IBOC broadcast and IBOC broadcast, respectively, and the user option being selected by the user is “forced analog”, In the broadcast mode, even if “forced analog” is used, there is no problem in output, but “automatic switching” is more appropriate as a user option. In addition, when the currently selected received broadcast is not changed, the broadcast mode of the received broadcast is changed from, for example, Non-Delay broadcast to IBOC broadcast, and the user option currently selected by the user is “forced analog”. In the broadcast mode after the change, although “forced analog” does not affect the output, “automatic switching” is more appropriate as a user option. In addition, when the transmission mode of the currently selected reception broadcast is IBOC broadcast and the user selection currently selected by the user is “forced analog”, the received electric field strength increases due to the movement of the automobile and the output of the digital broadcast is When possible, in the broadcast mode after the change, although “forced analog” does not affect the output, “automatic switching” is more appropriate as a user option. In such a situation, the user can receive a notification from the second situation change notification means 71 and can appropriately respond to the situation change.

  In the broadcast receiver 55, a plurality of broadcast modes belonging to the same transmission mode are classified, and a plurality of user options effective for the broadcast mode of the classification are set in advance as effective option user options for each category. It is. The option selection means 57 detects the broadcast mode classification of the currently selected received broadcast, and selects a user option by effective classification related to the classification as an effective user option.

  FIG. 6 is a flowchart of the broadcast receiver control method 80. The broadcast receiver control method 80 is applied to the broadcast receiver 55. The broadcast receiver 55 can output the broadcast content of the received broadcast for the received broadcast that is assigned with one carrier frequency and transmitted in a predetermined transmission mode.

  In S81, the transmission mode of the currently selected reception broadcast and the broadcast mode of the transmission mode are detected. In S82, user options that are valid in the broadcast mode of the currently selected received broadcast are selected as effective user options from among user options related to the predetermined function prepared for the transmission mode. In S83, the user-selectable user options are limited to valid user options only.

  The broadcast receiver control method 80 will be specifically described. When the transmission mode of the currently selected reception broadcast is the IBOC transmission mode, the various above-described specific matters applied to the broadcast receiver 55 can be applied as they are as specific items of the control method 80 for the broadcast receiver. It is.

  In the broadcast receiver control method 80, the following steps 101 to 104 can be added between S82 and S83.

Step 101: The user is notified of the most recommended user option among a plurality of user options effective for the current broadcast mode.

Step 102: In the user selection screen of user options, a plurality of user options effective for the current broadcast mode are displayed side by side in the recommended order.

Step 103: The user option currently selected by the user is changed due to the change of the currently selected received broadcast, the change of the transmission mode of the currently selected received broadcast, or the deterioration of the reception environment of the currently selected received broadcast. Detect that it was the right user choice. Then, the user is notified that the currently selected user option is an inappropriate user option.

Step 104: More appropriate than the currently selected user option in accordance with the change of the currently selected received broadcast, the change of the transmission mode of the currently selected received broadcast, or the improvement of the reception environment of the currently selected received broadcast. Detects the appearance of a user choice. Then, the user is notified that a user option more appropriate than the user option currently selected by the user has appeared.

  In the broadcast receiver control method 80, a plurality of broadcast modes belonging to the same transmission mode are classified, and a plurality of user options effective for the broadcast mode of each category are classified for each category. Set in advance as options. In S82, it is assumed that the broadcast mode classification of the currently selected received broadcast is detected, and the user option by effective classification related to the classification is selected as the effective user option.

  The program of the present invention is caused to function as each means of the broadcast receiver 55. The program of the present invention also causes a computer to realize each step of the broadcast receiver control method 80.

  Although the present invention has been described with respect to the best mode, it is needless to say that the present invention is not limited to this and can be implemented in various forms within the scope of the gist.

It is a block diagram of HD radio. It is explanatory drawing of the grouping method of the broadcast mode in IBOC transmission mode. It is a figure which shows the setting parameter selection screen of the "reception mode switching" function in the period when the reception broadcast of the group A is selected. It is a figure explaining the broadcast mode applied to the setting parameter which concerns on a "display display mode switching" function, and each setting parameter. It is a functional block diagram of a broadcast receiver. It is a flowchart of the control method for broadcast receivers.

Explanation of symbols

55: Broadcast receiver, 56: Broadcast mode detection means, 57: Option selection means, 58: User selection restriction means, 61: Most recommended option notification means, 63: Option display means, 66: First situation change detection means, 67: first situation change notification means; 70: second situation change detection means; 71: second situation change notification means; and 80: control method for broadcast receiver.

Claims (10)

In a broadcast receiver capable of outputting the broadcast content of the received broadcast for a received broadcast that is assigned one carrier frequency and transmitted in a predetermined transmission mode,
A transmission mode of the currently selected reception broadcast, and a broadcast mode detection means for detecting the broadcast mode of the transmission mode;
User option selection means for selecting a user option related to a predetermined function prepared for the transmission mode, which is effective in the currently selected reception broadcast mode, as an effective user option, and a user selectable user User selection limiting means for limiting options to only valid user options,
A broadcast receiver characterized by comprising:   The broadcast mode of the predetermined transmission mode includes a first broadcast mode including only analog broadcast, a second broadcast mode including one analog broadcast and one digital broadcast, a third broadcast mode including only digital broadcast, and one Including a fourth broadcast mode including an analog broadcast and a plurality of digital broadcasts, and a fifth broadcast mode including one analog broadcast and one digital broadcast and outputting analog broadcast with priority. The broadcast receiver according to claim 1.   The user options related to a predetermined function are forced digital to select and output a digital broadcast in the currently selected received broadcast, forced analog to select and output an analog broadcast in the currently selected received broadcast, 3. The broadcast receiver according to claim 2, further comprising automatic switching for outputting the digital broadcast in preference to the analog broadcast if there is no problem in the output of the digital broadcast in the currently selected received broadcast.   3. The broadcast receiver according to claim 2, wherein the user option related to a predetermined function is a user option related to the number of rows when information related to the broadcast content currently being output is displayed on a display. The most recommended option notification means for notifying the user of the most recommended user option among a plurality of user options effective for the current broadcast mode,
The broadcast receiver according to claim 1, wherein the broadcast receiver is provided. A user whose user selection is currently inappropriate due to a change in the currently selected received broadcast, a change in the transmission mode of the currently selected received broadcast, or a deterioration in the reception environment of the currently selected received broadcast. First status change detection means for detecting that the user has become an option, and first status change notification means for notifying the user that the user option currently selected by the user has become an inappropriate user option;
The broadcast receiver according to claim 1, wherein the broadcast receiver is provided. User options that are more appropriate than currently selected user options due to changes in the currently selected received broadcast, changes in the transmission mode of the currently selected received broadcast, or improvements in the reception environment of the currently selected received broadcast Second status change detection means for detecting the appearance of the user, and second status change notification means for notifying the user that a user option more appropriate than the user option currently selected by the user has appeared,
The broadcast receiver according to claim 1, wherein the broadcast receiver is provided. A plurality of broadcast modes belonging to the same transmission mode are classified, and for each classification, a plurality of user options effective for the broadcast mode of the classification are set in advance as effective classification user options,
2. The user option selection means detects a broadcast mode classification of a currently selected received broadcast, and selects a user option classified by effective classification related to the classification as an effective user option. The broadcast receiver in any one of -7. In a control method of a broadcast receiver capable of outputting the broadcast content of the received broadcast, with respect to the received broadcast that is assigned one carrier frequency and transmitted in a predetermined transmission mode,
Detecting the transmission mode of the currently selected reception broadcast and the broadcast mode of the transmission mode;
Among the user options related to the predetermined function prepared for the transmission mode, those that are effective in the broadcast mode of the currently selected received broadcast are selected as effective user options,
Restrict user-selectable user options to only valid user options,
A control method for a broadcast receiver.   The program for functioning a computer as each means of the broadcast receiver in any one of Claims 1-9.

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