JP2018056632A - Broadband receiver and broadband receiving method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a broadband receiver capable of receiving a program along contents of an initially selected broadcast program when switching is repeated.SOLUTION: A broadcast receiver includes: a receiving unit for receiving a broadcast program accompanied with alternative broadcast program information; switching operation means for switching between first link switching to switch to the same broadcast program having the same contents as a broadcast program and second link switching to switch to a related broadcast program related to contents of a broadcast program; a reception state measuring unit for measuring a reception state; reception state determination means for determining whether the reception state is a prescribed reception state; and switching operation instruction means for having the first link switching operated when it is determined that it is not the prescribed reception state, and having the second link switching operated when the first link switching is not possible. When the second link switching at the second time or later is operated, the broadcast receiver performs switching operation to receive a broadcast program before switching of the second link switching for the first time or a broadcast program to be an object of operation of the second link switching for the first time.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a broadcast receiving apparatus and a broadcast receiving method for switching a broadcast program with alternative broadcast program information.

  European digital broadcasting DAB (Digital Audio Broadcast) is provided with a link function called service following that switches to the same or related alternative stations when the reception state deteriorates. Service following includes hard link switching for switching to an alternative station with the same program content, and soft link switching for switching to an alternative station with a related or common part of the program content. is there.

  There has been proposed a digital audio broadcast receiving apparatus that further promotes such service following (see, for example, Patent Document 1). In the receiving apparatus described in Patent Document 1, when the receiving state of the digital broadcasting by the currently receiving DAB deteriorates, the DAB-DAB link function is used or the DAB-FM link function is used. It is possible to receive DAB broadcasts having the same contents and good reception status, and also FM broadcast programs, and continuous broadcast program reception is possible.

Japanese Patent Laid-Open No. 2000-224064

  By the way, the switching by the hard link described above is a switching to a broadcast program having the same program content, whereas the soft link is a switching to a broadcast program having a portion related to the program content. If a soft link is repeatedly performed due to the deterioration of the reception state when receiving by a mobile body such as a vehicle, the program may differ from the original broadcast program.

  As shown in FIG. 5, when a predetermined broadcast station is selected and received in order to listen to program A (news), when soft link switching is repeated due to repeated deterioration of the reception state, program B related to program A (Sports news), and program B (sports relay) related to program B, program D (motorsports relay) related to program C, program E (related to program D) due to deterioration in the reception state of program B It is switched every time the reception state deteriorates to the proud introduction of a favorite car, and the broadcast program having completely different contents from the original program A is received. The conventional receiving apparatus including the receiving apparatus according to Patent Document 1 cannot prevent a broadcast program having contents far from the original broadcast program by repeating the soft link switching described above.

  An object of the present invention is to provide a broadcast receiving apparatus and a broadcast receiving method capable of receiving a broadcast program in accordance with the contents of the initially selected broadcast program even when soft link switching is repeatedly performed.

  In order to solve the above-described problems, a broadcast receiving apparatus according to the present invention includes a receiving unit that receives a broadcast signal of a broadcast program accompanied by alternative broadcast program information, and the receiving unit has the same content as the broadcast program based on the broadcast signal. Switching operation means for operating first link switching for switching to reception of a broadcast signal of the same broadcast program and second link switching for switching to reception of a related broadcast program related to the content of the broadcast program by the broadcast signal; A reception status measuring unit for measuring the reception status of the broadcast signal to be received, a reception status determining means for determining whether or not the reception status measured by the reception status measurement unit is a predetermined reception status, and the reception status When it is determined by the determination means that the predetermined reception status is not established, when the broadcast signal of the same broadcast program can be received based on the alternative broadcast program information, the switching operation means is operated by the switching operation means. And a switching operation instruction means for causing the switching operation means to perform the second link switching operation when the broadcast signal of the same broadcast program cannot be received, wherein the switching operation means When operating the second link switching operation for the second time and thereafter, the operation instructing means selects the broadcast program before the first second link switching or the broadcast program that is the target of the first second link switching operation. This is a configuration for switching to broadcast reception.

  According to such a configuration, even when the reception status of the broadcast program deteriorates repeatedly and the second link switching (corresponding to soft link switching) is performed a plurality of times, the broadcast before the first switching of the second link switching is performed. Since the switching operation to the broadcast reception of the program or the broadcast program that is the target of the first second link switching operation is performed, it is possible to prevent the reception of the broadcast program unrelated to the broadcast program that was initially listened to. it can.

  In the broadcast receiving apparatus according to the present invention, after the switching operation instruction means performs the operation of the first link switching (corresponding to the hard link switching), the second link switching after the operation of the first link switching is performed. The first second link switching can be adopted.

  According to such a configuration, after performing the first link switching to switch to the same broadcast program as the received broadcast program, the second link switching after the first link switching operation is performed for the first time. Since the two-link switching is performed, the information on the broadcast program (same broadcast program and related broadcast program) to be switched can be reset to the latest one.

  In the broadcast receiving apparatus according to the present invention, the alternative broadcast program information may include a switching operation information to the same broadcast program and a switching operation information to the related broadcast program.

  According to such a configuration, since the alternative broadcast program information includes the switching operation information to the same broadcast program and the switching operation information to the related broadcast program, when the reception status of the broadcast program being received has deteriorated, The reception can be switched quickly. The switching operation information includes information such as the frequency of the same broadcast program and related broadcast program necessary for switching reception.

  In the broadcast receiving apparatus according to the present invention, the broadcast signal reception status measured by the reception status measurement unit is at least one of the broadcast reception intensity of the broadcast signal and the broadcast reception quality of the broadcast signal. Can do.

  According to such a configuration, it is possible to objectively grasp the suitability of the broadcast program reception status. Either or both of broadcast reception intensity and broadcast reception quality (for example, C / N value) can be used.

  In the broadcast receiving apparatus according to the present invention, when the switching determination means has at least one of the broadcast reception intensity of the broadcast signal and the broadcast reception quality of the broadcast signal equal to or less than a predetermined value set in advance, It can be set as the structure which determines with it not being a predetermined | prescribed receiving condition.

  According to such a configuration, when the reception intensity or the like becomes equal to or less than a predetermined value set in advance, it can be determined that the reception condition is not predetermined, and quick reception switching is possible. The setting of the predetermined value can be appropriately changed depending on the reception environment or the like.

  In the broadcast receiving apparatus according to the present invention, the switching operation instruction means creates data of the same broadcast program information and related broadcast program information that can be received based on the received alternative broadcast program information and stores the data in the storage unit It can be.

  According to such a configuration, the reception of the broadcast program creates data of the same broadcast program information and related broadcast program information that can be received based on the alternative broadcast program information, so that appropriate broadcast program reception can be switched. It becomes.

  The broadcast receiving method according to the present invention includes a reception step of receiving a broadcast signal of a broadcast program accompanied by alternative broadcast program information, and switching to reception of a broadcast signal of the same broadcast program that is the same as the content of the broadcast program by the broadcast signal. A switching operation step of operating a receiving unit for switching one link and switching a second link for switching to reception of a related broadcast program related to the contents of the broadcast program by the broadcast signal, and measuring the reception status of the received broadcast signal A reception status measurement step, a reception status determination step for determining whether or not the measured reception status is a predetermined reception status, and when it is determined by the reception status determination step that the measurement status is not a predetermined reception status When the broadcast signal of the same broadcast program can be received based on the alternative broadcast program information, the switching operation means is operated to switch the first link, and the same broadcast number is A switching operation instruction step for causing the switching operation means to perform the second link switching operation when the broadcast signal cannot be received, wherein the switching operation instruction step is the second time When the subsequent second link switching operation is performed, the switching operation to the broadcast reception of the broadcast program before the first second link switching or the first second link switching operation is performed. It becomes the composition to make.

  According to the present invention, even when the reception status of a broadcast program repeatedly deteriorates and the second link switching is performed a plurality of times, the broadcast program before the first second link switching or the first second link switching is performed. Since the operation of switching to the broadcast reception of the broadcast program to be operated is performed, it is possible to prevent the reception of the broadcast program unrelated to the broadcast program that was initially listened to.

It is a block diagram which shows the structure of the broadcast receiver which concerns on embodiment of this invention. It is a flowchart which shows the control procedure by the control unit of the broadcast receiver which concerns on embodiment of this invention. It is the schematic of the class structure of the link information which concerns on embodiment of this invention. It is the schematic of soft link switching (2nd link switching) by the control unit of the broadcast receiver which concerns on embodiment of this invention. It is a schematic explanatory drawing of the soft link switching by the conventional broadcast receiver.

  Embodiments of the present invention will be described with reference to the drawings.

  A broadcast receiving apparatus according to an embodiment of the present invention is configured as shown in FIG.

  In FIG. 1, a broadcast receiving apparatus 11 includes a receiving unit 15 that receives a radio wave of a broadcast signal of a broadcast program by digital broadcasting DAB by an antenna 13, a demodulating unit 16 that demodulates the received broadcast signal into an electric signal, and a demodulated electric signal. An output unit 17 that outputs a signal from the speaker 18 as a predetermined sound (audio signal) is provided. Furthermore, a measurement unit 20 that measures the reception status of the received broadcast signal, an operation unit 22 that includes a touch panel, operation buttons, and the like, and a storage unit 21 that stores a predetermined program for control, alternative broadcast program information (to be described later), and the like. For example, the control unit 12 includes a hard disk, a flash memory, and the like, and a computer unit (for example, a CPU, a ROM RAM, an I / O interface, a bus, and the like) that is connected to these and controls the operation thereof.

  The receiving unit 15 is a tuner and an A / D converter circuit, the demodulator 16 is a demodulator circuit, the output unit 17 is an amplifier circuit and a D / A converter circuit, the measuring unit 20 is a broadcast reception intensity measuring device, a broadcast signal, and the like. It consists of a quality measuring device.

  In the broadcast receiving apparatus 11 having the above-described configuration, control is performed according to the procedure shown in FIG. When the user selects a broadcast station that broadcasts the broadcast program in order to listen to the desired broadcast program, the control unit 12 outputs audio from the speaker 18 via the receiver 15, demodulator 16, and output unit 17. At the same time, from the alternative broadcast program information of the broadcast program received together with the lost receivable station (receivable program) lost and a link information database for switching the link to the receivable station (hereinafter referred to as “DB” as appropriate) Is created (S11). As described above, the alternative broadcast program information includes the frequency of the broadcast station that broadcasts the related broadcast program having the same content as the selected broadcast program and the same related broadcast program.

  In DAB broadcasting, service link information information is stored in FIG (First information group) Type 0 Extension 6 as alternative broadcast program information of a broadcast program. The outline of the data structure will be described with reference to FIG. In FIG. 3, FIG Type 0 Extension 6 mainly has a three-stage data structure. “000” from the left in the upper row 31 is data indicating Type 1, for example “010” in the case of Type 2. Next, “Length” indicates the data length of the Data field. Service link information information is stored in the next “FIG data field”, which includes link information 1, link information 2,. Each piece of link information, for example, link information 1 includes each piece of information shown in the lower row 33.

  The left end “Id list flag” in the lower row 33 stores information indicating whether or not an Id list is included, and “0” indicates no Id list and “1” indicates that an Id list is present. The next “LA” stores information indicating whether or not an LA (Linkage Actuator) link is active, “0” indicates that it will be valid or invalid in the future, and “1” indicates that it is an active link. Show. The next “S / H” stores information indicating whether the link information 1 is a soft link (related broadcast program switching) or a hard link (same broadcast program switching), and “0” is Soft. “1” indicates a hard link. The next “ILS” is ILS (International Linkage Set Indicator), where “0” indicates a domestic link and “1” indicates an international link. The next “LSN” means LSN (Linkage Set Number), and the same number is used for common services. The next “Id list usage” is an ID list for using the link target service, “Number of ids” is the number of IDs, and “Id list” is the ID list of the link target service. Based on such information, the list of S11 described above is searched by searching for the frequency, service ID, and the like of an alternative station that can receive an alternative broadcast program (same broadcast program, related broadcast program) of the broadcast program being listened to. And create a database.

  The control unit 12 determines whether or not the reception state of the broadcast program being listened to has deteriorated, that is, whether or not at least one of the broadcast reception intensity and the broadcast reception quality of the broadcast signal has become a predetermined value or less. Determination (S12: reception status determination means). Note that the broadcast reception intensity and broadcast reception quality of the broadcast signal received by the measurement unit 20 which is a reception status measurement unit are measured. When the control unit 12 determines that the received value is not less than the predetermined value (NO in S12), since the reception state has not deteriorated, the broadcast program continues to be output and the broadcast program reception state deteriorates again. It is determined whether or not. When the control unit 12 determines that the value is equal to or less than the predetermined value (YES in S12), since the reception state has deteriorated, the hard link that performs switching to the same broadcast program, that is, hard link switching (first link switching). Whether there is a destination is determined from a database such as a list created from the alternative broadcast program information stored in the storage unit 21 (S13). Priority is given to hard link switching, which is switching to the same broadcast program, over soft link switching (second link switching), which is switching to a related broadcast program.

  When there is a hard link destination (YES in S13), the control unit 12 tunes the reception at the receiving unit 15 to the frequency of the hard link destination broadcast station, and switches to and receives the same broadcast program (S18: switching operation). Means, switching operation instruction means). Thereby, even when the reception status of the broadcast program deteriorates, the user can switch to the same broadcast program, and can continuously listen to the broadcast program having the same content.

When there is no hard link destination (NO in S13), the control unit 12 determines that the soft link destination stored in the storage unit 21 is the first soft link switch (if there has already been a hard link switch, It is determined whether or not it is the first soft link switching (S14). When soft link switching has already been performed, the first soft link switching is not performed. When the control unit 12 determines that it is the first soft link switching (YES in S14), the control unit 12 generates software from the receivable (program) list created from the alternative broadcast program information accompanying the received broadcast program and the link information DB. The link destination is referred to (S15). When the control unit 12 determines that it is not the first soft link switching (NO in S14), the control unit 12 refers to the soft link destination in the first soft link (S16). The control unit 12 determines whether or not there is a receivable soft link destination at the time of the first soft link switching (S17). If it is determined that there is a soft link destination (YES in S17), a procedure to be described later The broadcast program is received by switching to the soft link destination determined by (S19: switching operation means, switching operation instruction means). In the determination of whether or not it is the first soft link switching, when the hard link switching has already been performed, it is determined whether or not it is the first soft link switching after the hard link switching.
After performing a hard link switch to switch to the same broadcast program as the received broadcast program, even if there is a soft link switch before that, the soft link switch after the hard link switch is the first soft link switch Is. This is because hard link switching switches to the same broadcast program, so that the software link destination of the same broadcast program is reset to the latest one.

  The point of referring to the first soft link destination will be described with reference to FIG. In order to listen to the program A (news), the user selects a broadcasting station for the program A (news). While listening to the program A, the reception situation deteriorated, but the control unit 12 refers to the soft link destination because the hard link destination (the same broadcast program) is not stored in the storage unit 21. Since program B (sports news) and program F (flash news) are stored as soft link destinations (related broadcast programs) of program A, when program B has a higher priority than program F, control unit 12 Switching to reception of program B having a high switching priority. When program B and program F are stored as soft link destinations, if the link priority is stored, the program is switched to the higher one after the priority, and received when the priority is not stored. Switch to a better situation. While the reception status deteriorated again while listening to the switching destination program B (sports news), the control unit 12 refers to the soft link destination because the hard link destination is not stored. At this time, program A (news) and program D (motor sports broadcast) are stored as soft link destinations of program B (sports news), but the control unit 12 is the second soft link from program B. Since the link is a link (not the first soft link), the soft link switching is performed for the program B and the program F which are the link destinations of the first soft link, and also for the program A which was first listening. . However, since the reception status of the program B is currently deteriorated, the original program A and the program F are candidates for switching as soft link destinations. At this time, switching to the one with better reception status is performed preferentially, so the program A may be returned. When the reception status of the program A has not recovered, the program F is switched to.

  As described above, when the program A is switched to the program B due to the deterioration of the reception status of the program A while listening to the program A by the user's channel selection, even if the reception status of the program B deteriorates this time, Since switching to the program D (motor sports relay) stored as the link destination is not performed, switching to a program whose program content is less relevant to the program A by the user's channel selection can be prevented.

  When there is no soft link destination (NO in S17), the control unit 12 continues to receive the current broadcast program whose reception status has deteriorated and waits for the recovery of the reception status (S20). As described above, when one of hard link switching, soft link switching, or continuous reception of the current broadcast program occurs due to a deterioration in reception status, the control unit 12 receives the broadcast that has been received after switching (after continuing). It is determined whether or not an operation for ending the reception of the program has been performed by the operation unit 22, and when the ending operation is performed (YES in S21), the reception is ended, and when there is no ending operation, the reception is continued. Then, repeatedly, create a receivable list and link information DB from the alternative broadcast program information of the broadcast program being received (S11), determine whether or not the reception situation has deteriorated, and when it has deteriorated, as described above, Switching or the like is performed (S12 to S20).

  As described above, according to the present embodiment, even if the soft link switching is repeated a plurality of times, the second and subsequent soft links refer to the link information of the first soft link. It is possible to prevent the reception of a broadcast program unrelated to. Note that the above-described broadcast program to be switched can be applied not only to a radio broadcast program but also to a television broadcast program.

  As described above, according to the broadcast receiving apparatus and the broadcast receiving method according to the present invention, the soft link (second link switching) is a switching to a related broadcast program due to repeated deterioration of the reception status of the broadcast program. Even if the program is performed several times, the broadcast program before the first soft link switching or the broadcast program that is the target of the first soft link switching operation is switched to broadcast reception. Since it is possible to prevent the reception of a broadcast program unrelated to the broadcast program, it is useful as a broadcast reception apparatus and a broadcast reception method for switching a broadcast program with alternative broadcast program information.

DESCRIPTION OF SYMBOLS 11 Broadcast receiving apparatus 12 Control unit 13 Antenna 15 Receiving part 16 Demodulating part 17 Output part 18 Speaker 20 Measuring part 21 Storage part 22 Operation part

Claims (7)

A receiving unit for receiving a broadcast signal of a broadcast program with alternative broadcast program information;
In the receiving unit, for the first link switching to switch to receiving the broadcast signal of the same broadcast program as the content of the broadcast program by the broadcast signal, and for receiving the related broadcast program related to the content of the broadcast program by the broadcast signal. Switching operation means for operating the second link switching to be switched;
A reception status measurement unit for measuring the reception status of the broadcast signal to be received;
Reception status determination means for determining whether or not the reception status measured by the reception status measurement unit is a predetermined reception status;
When it is determined by the reception status determination means that the reception status is not a predetermined one, if the broadcast signal of the same broadcast program can be received based on the alternative broadcast program information, the first link is sent to the switching operation means. A switching operation instruction means for causing the switching operation means to perform the switching operation of the second link when the broadcast signal of the same broadcast program cannot be received;
A broadcast receiving apparatus comprising:
When the second link switching operation is performed for the second and subsequent times, the switching operation instruction unit broadcasts the broadcast program before the first second link switching or the broadcast targeted for the first second link switching operation. A broadcast receiving apparatus for switching operation to broadcast reception of a program.   2. The switching operation instruction means according to claim 1, wherein after the first link switching operation is performed, the second link switching after the first link switching operation is the first second link switching. Broadcast receiving device.   The broadcast receiving apparatus according to claim 1, wherein the alternative broadcast program information includes switching operation information to the same broadcast program and switching operation information to the related broadcast program.   The broadcast reception according to any one of claims 1 to 3, wherein the reception status of the broadcast signal measured by the reception status measurement unit is at least one of the broadcast reception intensity of the broadcast signal and the broadcast reception quality of the broadcast signal. apparatus.   The switching determination means determines that the predetermined reception condition is not satisfied when at least one of the broadcast reception intensity of the broadcast signal and the broadcast reception quality of the broadcast signal is equal to or less than a predetermined value set in advance. The broadcast receiving apparatus according to claim 4 to be performed.   6. The switching operation instructing unit creates data of the same broadcast program information and related broadcast program information that can be received based on the received alternative broadcast program information and stores the data in a storage unit. Broadcast receiver. A receiving step of receiving a broadcast signal of a broadcast program with alternative broadcast program information;
First link switching for switching to reception of a broadcast signal of the same broadcast program as the content of the broadcast program by the broadcast signal, and second link for switching to reception of a related broadcast program related to the content of the broadcast program by the broadcast signal A switching operation step for operating the switching on the receiving unit;
A reception status measurement step for measuring the reception status of the broadcast signal to be received;
A reception status determination step for determining whether or not the measured reception status is a predetermined reception status;
When it is determined that the reception status is not the predetermined reception status in the reception status determination step,
When the broadcast signal of the same broadcast program can be received based on the alternative broadcast program information, the switching operation means is operated to switch the first link, and when the broadcast signal of the same broadcast program cannot be received. A switching operation instruction step for causing the switching operation means to perform the second link switching operation;
A broadcast receiving method comprising:
In the switching operation instruction step, when performing the second and subsequent second link switching operations, the broadcast program before the first second link switching switching or the first second link switching operation target broadcast A broadcast receiving method for switching to broadcast reception of a program.

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