JP2003332926A - Multiple broadcasting receiving apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a service function utilizing a PTY code cannot be carried out along with the update of the noncompatible PTY code of EON data. <P>SOLUTION: The multiple broadcasting receiving apparatus comprises a data update section 23 that acquires RDS data from an RDS broadcasting signal by a main RDS decoder 14A and a sub RDS decoder 14B, and allows a PI code and the PTY code to correspond each other for storing in a memory 7; an EON data judgment section 21 that judges whether the newest RDS data are EON data or not; a non-update target data judgment section 22 that judges whether the PTY code in the EON data is '0' or not in the case of the EON data; and a control unit 24 for controlling the data update section 23 so that the storage update of the PTY code is prohibited when the PTY code is judged to be '0'. <P>COPYRIGHT: (C)2004,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention obtains RDS data from a multiplex broadcast such as, for example, a radio data system (hereinafter simply referred to as RDS) broadcast, and based on the RDS data. For example, the present invention relates to a multiplex broadcast receiving device such as an RDS broadcast receiving device that realizes various service functions such as a PTY interrupt function. 2. Description of the Related Art Conventionally, such multiplex broadcasting, RDS
Broadcasting multiplexes RDS data into program broadcasting,
Based on the S data, the listener is provided with various service functions. [0003] RDS data includes 0 including an undefined group.
The group is composed of 16 groups of up to 15 groups. In recent years, the 14A group is used for EON (Enhanced Other Networks) data in this undefined group. The RDS data of this 14A group is EO
As N data, it is possible to transmit not only information of the current network being received but also information of another network. A description will now be given of a data format of the 14A group for transmitting such EON data. FIG. 4 is an explanatory diagram showing the data format configuration of the 14A group. In FIG. 4, TN added after each code indicates data on the own network (This Network), and ON indicates other network (Other Network).
orks). [0006] The 14A group includes the first to fourth blocks.
It consists of four blocks up to the block. [0007] In the first block, a program identification code (PI (TN)) of its own network is arranged. This P
The I code has, for example, a country code and a broadcast area code. By searching for a station having the same PI code,
Even when moving by car, the same program can be continuously heard. Further, in the second block, for example, a program type code (PTY (TN)) of the own network is arranged, and this PTY code is composed of 32 types of program from 0 to 31 (music program, news program, etc.). , Sports programs, etc.)
Is a 5-bit code for identifying the program, and a program type is assigned based on a predetermined rule. The third block further includes (0) to (1)
16 types of information up to 5) are arranged, and (0) to (3)
Shows the character code of the broadcast station name, and (4) shows the broadcast station frequency data (AF
(ON)). Further, in (5) to (9), broadcast station frequency data of the own network and broadcast station frequency data of another network in the mapped frequency format are arranged. Any one of the formats of the broadcast station frequency data (4) or (5) to (9) is selected in advance by each broadcast station, and the broadcast station frequency data is transmitted according to the selected format. In (13), a PTY code (PTY (ON)) of another network and the like are arranged. In the fourth block, the P of another network is
An I code (PI (ON)) is arranged. [0012] RDS data obtained by multiplexing the RDS data of the 14A group or the like having such a data format is described below.
An RDS broadcast receiving device for receiving a broadcast will be described.
FIG. 5 is a block diagram showing a schematic configuration inside a conventional RDS broadcast receiving apparatus. The RDS broadcast receiving apparatus 1 shown in FIG. 5 employs a double tuner function composed of, for example, a main receiving system 10A and a sub receiving system 10B, and receives a receiving RDS broadcast radio wave, and this receiving antenna 2. 2
Antenna distributor 3 for distributing the RDS broadcast radio waves received by the main receiving system 10A and the sub receiving system 10B, respectively.
And an amplifier 4 for amplifying the RDS broadcast signal tuned by the main system receiving system 10A, a speaker 5 for outputting the RDS broadcast signal amplified by the amplifier 4 as audio, and a display unit for displaying various information and the like. 6, a memory 7 for storing various information and the like, and a system microcomputer 8 for controlling the entire RDS broadcast receiving apparatus 1. The main receiving system 10A transmits an RD of an arbitrary frequency from the RDS broadcast wave distributed by the antenna distributor 3.
A main tuner 11A that tunes to the S broadcast signal and outputs the tuned RDS broadcast signal to the amplifier 4, a main PLL 12A that generates a tuning frequency signal for tuning to an RDS broadcast signal of an arbitrary frequency, A main BPF 13A for extracting an RDS data component from the RDS broadcast signal tuned by the tuner 11A;
A main RDS decoder 14A for decoding the RDS data extracted by the PF 13A. Further, the sub receiving system 10B includes a sub tuner 11B for tuning an RDS broadcast signal distributed by the antenna distributor 3 to an RDS broadcast signal of an arbitrary frequency.
A sub PLL 12B for generating a tuning frequency signal for tuning to an RDS broadcast signal of an arbitrary frequency, a sub BPF 13B for extracting an RDS data component from the RDS broadcast signal tuned by the sub tuner 11B, and a sub BPF 1
RDS for sub to decode RDS data extracted in 3B
And a decoder 14B. In the system microcomputer 8, R extracted by the main RDS decoder 14A of the main reception system 10A and the sub RDS decoder 14B of the sub reception system 10B are extracted.
The DS data is stored in the memory 7, and various service functions can be realized based on the contents stored in the memory 7. The service functions include, for example, a program list display function, a PTY interrupt function, a PTY search function, and the like. The program list display function displays, for example, which broadcast station is broadcasting what kind of program based on the contents stored in the memory 7 in which the PI code and the PTY code are stored in association with each other. This is a function for displaying a list in the unit 6. The PTY interrupt function is, for example, PI
When a broadcast having the same PTY code as an arbitrary PTY code specified in advance by an operation unit (not shown) is detected based on the storage contents of the memory 7 in which the PTY code and the PTY code are stored in association with each other, the detected same PTY code is detected. This is a function to interruptly receive broadcasts. The PTY search function is, for example, PI
This is a function of searching for a broadcast related to an arbitrary PTY code specified in advance by an operation unit (not shown) based on the storage contents of the memory 7 in which the code and the PTY code are stored in association with each other. Therefore, in the system microcomputer 8,
In order to realize these service functions, the memory 7
Needs to be updated to the latest RDS data. In the system microcomputer 8, while a predetermined broadcast is being received by the main reception system 10A, another broadcast is received by the sub reception system 10B.
The latest RDS data is extracted from the DS broadcast signal, and the extracted latest RDS data is stored and updated in the memory 7. Now, a description will be given of an RDS data update process relating to such a conventional RDS broadcast receiving apparatus 1. For example, the main receiving system 10A receives a broadcast having the PTY code "10" and sets the PI code of the broadcast to "C201". That is, it is assumed that the memory 7 stores the PI code “C201” and the PTY code “10” in association with each other. At this time, the sub receiving system 10B receives, for example, a broadcast of the PI code "C202" and
The EON data corresponding to the PI code “C202” is decoded through the S decoder 14B, and the PI code “C201” exists in the decoded EON data.
If a PTY code corresponding to the I code “C201” exists, the memory 7 corresponding to the PI code “C201”
Is updated to the content of the latest PTY code. As described above, according to the conventional RDS broadcast receiving apparatus 1, the main RDS decoder 14A of the main receiving system 10A and the sub RDS decoder 14B of the sub receiving system 10B correspond to the PI code stored in the memory 7. When the latest PTY code to be extracted is extracted, the PTY code stored in the memory 7 corresponding to this PI code is updated to the latest PTY code.
Since the contents of the code are stored and updated, an optimum service function can be realized based on the contents of the memory 7. [0027] Generally, RDS in Europe
In the current state of broadcasting, the PTY code (PTY (TN)) of the own network is the correct PTY code that matches the PI code.
Although the TY code is distributed, data related to other networks, that is, the PTY code (PT
Y (ON)) is unsupported except for some areas, and in this unsupported area, a fixed code “0” may be distributed as a PTY code. However, according to the RDS broadcast receiving apparatus 1 as the conventional multiplex broadcast receiving apparatus, when the latest PTY code corresponding to the PI code stored in the memory 7 is extracted, the memory 7 corresponding to the PI code is extracted. Is updated to the contents of the latest PTY code. For example, when the PTY code “10” corresponding to the PI code “C201” is stored in the memory 7, the EON data is received. And the P in the EON data
When the PTY code “0” corresponding to the I code “C201” is extracted, the PTY code is stored and updated from “10” to “0” although the PTY code is originally “10”. However, service functions such as a PTY interrupt function, a PTY search function, and a program list display function using the PTY code stored in the memory 7 cannot be appropriately provided. The present invention has been made in view of the above points, and an object of the present invention is to provide an optimal service function using a PTY code while acquiring the latest RDS data obtained from EON data. It is an object of the present invention to provide a multiplex broadcast receiving apparatus capable of performing the above. [0030] In order to achieve the above object, a multiplex broadcast receiving apparatus according to the present invention comprises: a receiving means for receiving a multiplex broadcast signal in which data is multiplexed on a broadcast signal; and the receiving means. A data extracting means for extracting the program identification data and the program type data as the data from the multiplex broadcast signal received at the step (a), and the program identification data and the program type data extracted by the data extracting means are stored in association with each other. When the storage means and the data extraction means extract program identification data and program type data relating to the program identification data stored in the storage means, the program stored in the storage means relating to the extracted program identification data Multiplex broadcast reception having data updating means for storing and updating program type data corresponding to the identification data to the newly extracted program type data In the apparatus, it is determined that the program identification data and the program type data extracted by the data extraction unit are data relating to another network, and that the newly extracted program type data is non-update target data. Then, a control unit for controlling the data updating unit is provided so as to prohibit the storage update of the program type data. Therefore, according to the multiplex broadcast receiving apparatus of the present invention, the program identification data and the program type data extracted by the data extracting means are data relating to another network, for example, EON data, and the newly extracted data is used. When it is determined that the program type data is the non-update target data, the storage update of the program type data is prohibited.
Even if the latest data obtained from the EON data is acquired, the program type data in the EON data, for example, PTY
It is possible to secure the storage and update of the correct PTY code and to provide an optimal service function using the correct PTY code, while taking into consideration the current adverse effect that the code does not support EON. An RDS broadcast receiving apparatus according to an embodiment of the present invention will be described below with reference to the drawings. The same components as those of the RDS broadcast receiving apparatus 1 shown in FIG. 4 are denoted by the same reference numerals, and the description of the overlapping configurations and operations will be omitted. RDS broadcast receiving apparatus 1 showing the present embodiment
4 differs from the RDS broadcast receiving apparatus 1 shown in FIG. 4 in the internal configuration of the system microcomputer 8A. FIG. 1 is a block diagram showing a schematic configuration inside system microcomputer 8A which is a main part of RDS broadcast receiving apparatus 1 according to the present embodiment. The system microcomputer 8A, which is a main part of the RDS broadcast receiving apparatus 1 shown in FIG. 1, includes a main RDS decoder 14A and a sub receiving system 10A of a main receiving system 10A.
An EON data determination unit 21 that determines whether the RDS data decoded by the sub RDS decoder 14B for B is EON data, and whether the PTY code in the EON data is "0", that is, whether the data is non-update target data. It has a non-update target data determination unit 22 for determining whether or not the data is updated, a data update unit 23 for controlling data update of the memory 7, and a control unit 24 for controlling the system microcomputer 8A. When the EON data determination section 21 determines that the data is EON data, the non-update target data determination section 22 determines whether the PTY code in the EON data is "0", Is determined. FIG. 2 is an explanatory diagram showing the updated contents of the memory 7. In FIG. 2, the memory 7 stores P
I code, PTY code and RD of other network stations
It is assumed that S data is stored in association with each other. The control unit 24 includes a non-update target data determination unit 2
If it is determined in step 2 that the PTY code in the EON data is "0", the data update unit 23 is controlled so as to prohibit the memory update of the PTY code of the RDS data. The non-update target data determination unit 22 uses EON.
If it is determined that the PTY code in the data is “0”, the data updating unit 23 prohibits the memory update of the PTY code in the RDS data. Of the RDS data is updated. The control unit 24 determines that the RDS data is not EON data by the EON data determination unit 21 or
Alternatively, when the non-update target data determination unit 22 determines that the PTY code is not “0”, the newly acquired RD
The data update unit 23 is controlled so that the S data is updated in the memory. The multiplex broadcast receiving device described in the claims is RD
S broadcast receiving apparatus 1, receiving means is main tuner 11A
And the sub tuner 11B and the data extraction means are the main RDS decoder 14A and the sub RDS decoder 14A.
B, the data updating means is the data updating unit 23, and the control means is E
This corresponds to the ON data determination unit 21, the non-update target data determination unit 22, and the control unit 24. Further, the data described in the claims correspond to RDS data, the program identification data corresponds to a PI code, and the program type data corresponds to a PTY code. Next, the operation of the RDS broadcast receiving apparatus 1 according to the present embodiment will be described. FIG. 3 is a flowchart showing a processing operation of the system microcomputer 8A relating to the RDS data update processing of the RDS broadcast receiving apparatus 1 according to the present embodiment. The RDS data updating process shown in FIG. 3 is a process for updating the RDS data stored in the memory 7 to the latest RDS data obtained by the main RDS decoder 14A and the sub RDS decoder 14B. In FIG. 3, the system microcomputer 8A determines whether the latest RDS data has been acquired by the main RDS decoder 14A or the sub RDS decoder 14B (step S11). If the latest RDS data has been acquired, it is determined whether or not there is a PTY code in the latest RDS data (step S12). When it is determined that the latest RDS data contains a PTY code, the EON data determination section 21 of the system microcomputer 8A determines whether or not the latest RDS data is EON data (step S13). . The non-update target data determination unit 22 of the system microcomputer 8A uses the latest RD
If it is determined that the S data is EON data, EON
It is determined whether the PTY code in the data is the non-update target data "0" (step S14). When the non-update target data determination unit 22 determines that the PTY code is not "0", the control unit 24 of the system microcomputer 8A updates the latest R including the PTY code.
The data updating unit 23 is controlled so as to execute a normal RDS data updating operation for storing and updating the DS data in the memory 7 (step S15), and the processing operation ends. Note that the updating operation in step S15 is the same as that in FIG.
As shown in (b), the PI code is “C201” and PT
When the Y code is “01” and “02” is extracted from the EON data as a PTY code corresponding to the PI code “C201”, the PTY code “01” corresponding to the stored PI code “C201” is converted to the PTY code “01” in FIG. As shown in (c), the latest PTY code "02" is updated. When the PTY code is determined to be "0" by the non-update target data judgment section 22 in step S14, the storage update of this PTY code is prohibited, and the latest PTY code other than this PTY code is prohibited. The data update unit 23 is controlled so as to execute an RDS data update operation for storing and updating only the RDS data (step S16), and the processing operation ends. Note that the updating operation in step S16 is the same as that in FIG.
As shown in (a), the PI code is “C201” and PT
If the Y code is “01” and “0” is extracted from the EON data as a PTY code corresponding to the PI code “C201”, the PTY code in this EON data is highly likely to be incorrect. As shown in (1), only the RDS data other than the PTY code is updated. At step S12, the PT in the RDS data
If there is no Y code, the latest RDS other than the PTY code
The process proceeds to step S16 to store and update the data. In step S13, the RDS data is EON
If it is determined that the data is not data, the process proceeds to step S15 to store and update the latest RDS data including the PTY code. According to the present embodiment, the RDS data acquired by the main RDS decoder 14A and the sub RDS decoder 14B is EON data, and
If the PTY code included in the data is determined to be the non-update target data “0”, the storage update of the PTY code is prohibited, so that the PTY of the EON data is prohibited.
In consideration of the current harm that the code does not support, it is necessary to ensure that the PTY code is updated and stored, and that
An optimal service function using the TY code can be provided. According to the multiplex broadcast receiving apparatus of the present invention configured as described above, the program identification data and the program type data extracted by the data extracting means are data relating to other networks, and If it is determined that the newly extracted program type data is the non-update target data, the storage update of the program type data is prohibited, so that the latest data obtained from data related to other networks, for example, EON data, is obtained. Even if the data is acquired, it is ensured that the PTY code is stored and updated accurately while taking into account the current adverse effect that the PTY code does not correspond to the program type data of the EON data. Service functions can be realized.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a schematic configuration inside a system microcomputer which is a main part of an RDS broadcast receiving apparatus showing an embodiment in a multiplex broadcast receiving apparatus of the present invention. FIG. 2 is an explanatory diagram simply showing storage contents of a memory according to the present embodiment; FIG. 3 is a flowchart showing a processing operation of a system microcomputer related to RDS data update processing of the present embodiment. FIG. 4 shows 14A as commonly used EON data.
FIG. 4 is an explanatory diagram showing a data format configuration of RDS data of a group. FIG. 5 is a block diagram showing a schematic configuration inside an RDS broadcast receiving apparatus which is a general multiplex broadcast receiving apparatus. [Description of Signs] 1 RDS broadcast receiving device (multiplex broadcast receiving device) 11A Main tuner section (receiving means) 11B Sub tuner section (receiving means) 14A Main RDS decoder (data extracting means) 14B Sub RDS decoder ( 7 memory (storage means) 21 EON data determination section (control means) 22 non-update target data determination section (control means) 23 data update section (data update means) 24 control section (control means)

Claims (1)

Claims: 1. A receiving means for receiving a multiplex broadcast signal in which data is multiplexed on a broadcast signal, and from the multiplex broadcast signal received by the receiving means, program identification data and program Data extraction means for extracting type data; storage means for storing the program identification data and program type data extracted by the data extraction means in association with each other; When the program identification data and program type data related to the program identification data are extracted, the program type data corresponding to the program identification data stored in the storage unit related to the extracted program identification data is replaced with the newly extracted program type data. A multiplex broadcast receiving device having data updating means for storing and updating data, wherein the program identification data and If the program type data is data relating to another network, and if it is determined that the newly extracted program type data is non-update target data, the program type data is prohibited from being updated. A multiplex broadcast receiving device comprising control means for controlling data updating means.