JP2007074085A - Radio receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio receiver in which a program service name of RDS (radio data system) broadcast can be correctly displayed and stored in a pre-set memory. <P>SOLUTION: The radio receiver 10 has functions of receiving both the RDS broadcast and a DAB (digital audio broadcasting) broadcast, and is provided with a substitute display means for searching a program service name in the DAB broadcast having the same SId (service identifier) of PI (program identifier) of the received service in receiving the RDS broadcast, and displaying the searched program service name as a program service name of the RDS broadcast on a display device 3. A program service name storage means is provided with a substitute storage means for searching a program service name in the DAB broadcast having the same SId as the PI of the received service; and storing the searched program service name as the program service name of the received service of the RDS broadcast service into a memory device 4, when the program service name of the received service is stored into the memory device 4 during receiving the RDS broadcast, based on an operation of a pre-set memory by a user with an input device 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a radio receiver capable of receiving digital multiplex FM broadcasting (hereinafter also referred to as RDS (Radio Data System)) and digital audio broadcasting (hereinafter also referred to as DAB (Digital Audio Broadcasting)). Belongs to the technical field.

  Since the program service name (Program Service name; hereinafter abbreviated as PS for short) of digital multiplex FM broadcasting (RDS) is sent as a character string of up to 8 characters by PS data of RDS multiplex data, radio reception of RDS broadcasting The machine can use it to display the program service name of the reception service currently being received on the display device.

  In addition, when a RDS broadcast is received, the program service name of the reception service is assigned and stored in a memory device called a preset memory in association with the preset number, so that the program service name of each preset broadcast is displayed in advance. It can be visually confirmed with the device.

  By the way, in [Patent Document 1] below, as shown in FIG. 6, DAB broadcast information (EId code, SId code, frequency information) can be quickly taken into the RDS broadcast receiving function side and DAB broadcast and DAB. As the radio broadcast receiver 100 capable of receiving broadcast, the DAB broadcast information contained in the received RDS multiplexed data is paired with the PI code of the currently received RDS broadcast in the memory 105 and written into the memory 105. After writing under the control and changing the reception frequency of the RDS broadcast, when the same broadcast as the broadcast corresponding to the PI code stored in the memory 105 is received, the PI code is paired in the memory 105 The stored DAB broadcast information is read under the control of the read control circuit 142, and the DAB tuner 102 receives information for reception. Configuration so as to deliver as has been proposed.

  Here, the PI code is an ID code (program identification code) for identifying a program at the beginning of the data format of all RDS data frames (group type) of RDS multiplexed data demodulated from the RDS reception signal.

In DAB broadcasting, a carrier frequency group corresponding to each broadcast channel is referred to as an ensemble, and a plurality of broadcast programs are multiplexed in each ensemble. The EId (Ensemble Identifire) code represents an ensemble ID code, and the SId (Service Identifire) code represents a service ID code (service identification code), each of which is demodulated from a DAB received signal.
Information Channel) data.

JP 2001-308732 A

  Originally, PS data for receiving services in RDS broadcasting is fixed for each broadcast and should not be changed, but in popular areas such as Germany, the number of broadcasting stations that use it instead of advertisements has increased recently. In these RDS broadcasts, PS data is changed and transmitted at intervals of several seconds. This is commonly called a dynamic PS, but when the program service name is stored in the preset memory while receiving such an RDS broadcast, it is shown on the display screen (a) of the display device in FIG. Instead of the original correct program service names “FFH” and “HR4” as in the list display, one word “und”, “aff”, etc. in the advertisement text as shown in FIG. 7B is the program service name. May be stored in a preset memory (No. 4 and 6 of the 6-station preset in the figure). Therefore, when the program service name assigned to each number in the preset memory is confirmed later, a word that has nothing to do with the program service name is displayed, causing confusion for the user.

  In addition, during the RDS broadcast reception, the dynamic PS (advertisement) is annoying the display state in which the dynamic PS advertisement characters are displayed one after another on the display device originally displaying the program service name of the reception service. ) May not be displayed, and many users desire to always display the correct program service name.

  In this regard, in the information processing technology of the RDS broadcast receiver capable of receiving DAB broadcast described in [Patent Document 1], only a technique for facilitating the switching of reception from RDS to DAB is shown. In addition, the problem of the erroneous display of the program service name for the RDS broadcasting station using the PS data display in the RDS broadcasting as described above cannot be solved, and no suggestion of the solution can be obtained.

  The present invention has been made in view of the above circumstances, and can receive both RDS broadcast and DAB broadcast even when PS data in RDS broadcast is dynamic PS used for purposes other than the original purpose such as advertisement. To provide a radio receiver capable of correcting as much as possible the erroneous display of the program service name being received, the erroneous storage of the program service name in the preset memory, and the erroneous display at the time of calling on the radio receiver side. Objective.

  The present invention has receiving means for receiving digital multiplex FM broadcasting (RDS) and digital audio broadcasting (DAB) or receiving means capable of adding a receiving function for digital audio broadcasting. Radio reception comprising: program service name storage means for storing the program service name of each broadcast reception service in the memory device 3; and program service name display means for displaying the program service name on the display screen of the display device 4. In the machine, the program service name display means displays the program service name in the digital audio broadcast having the same service identification code (SId) as the program identification code (PI) of the reception service when the digital multiplex FM broadcast is received. An ensemble search operation in digital audio broadcast reception or a search from the memory device 3 The digital audio broadcast program service name is displayed as a program service name of the digital multiplex FM broadcast reception service on the display screen of the display device 4, and the program service name storage means includes A program in digital audio broadcasting having the same service identification code (SId) as the program identification code (PI) of the reception service when storing the program service name of the reception service in the memory device 3 at the time of digital multiplex FM broadcast reception The service name is searched by the ensemble search operation in the digital audio broadcast reception, and the searched program service name of the digital audio broadcast is stored in the memory device 3 as the program service name of the reception service of the digital multiple FM broadcast. A radio comprising an alternative storage means By providing a signal device 10, to solve the above problems.

The radio receiver according to the present invention capable of receiving both RDS broadcast and DAB broadcast is as follows:
(1) PS data (dynamic PS) other than the program service name being received by the RDS broadcast can be prevented from being displayed on the display device, and the correct program service name can be displayed.
(2) The correct program service name of the RDS broadcast can be stored in the memory device (preset memory), and erroneous display of the program service name of the RDS broadcast when the preset memory is called can be prevented.

  An embodiment of a radio receiver according to the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram of a radio receiver having reception functions for both RDS broadcasting and DAB broadcasting according to the present invention. FIG. 2 is a flowchart showing a first processing procedure of the alternative display means in the program service name display means of the radio receiver according to the present invention. FIG. 3 is a flowchart showing a second processing procedure of the alternative display means in the program service name display means of the radio receiver according to the present invention. FIG. 4 is a flowchart showing the first processing procedure of the alternative storage means in the program service name storage means of the radio receiver according to the present invention. FIG. 5 is a flowchart showing a second processing procedure of the alternative storage means in the program service name storage means of the radio receiver according to the present invention.

  First, the point of the present invention and the gist of the present invention is that the program service name transmitted by DAB broadcasting is invariable, so that when RDS multiplexed data including dynamic PS of RDS broadcasting is received, When PS data is stored in a memory device (preset memory), an 8-character version display pattern of the program service name (16 character version / 8 character version) of the same DAB broadcast (same ID) as the RDS broadcast is used as an alternative program. If it is used as a service name, displayed on a display device, and stored in a memory device, PS data as an RDS broadcast program service name is correctly displayed on the display device even if it is a dynamic PS broadcast, User confusion is eliminated.

  Thus, the radio receiver according to the present invention has receiving means for receiving RDS broadcasting and DAB broadcasting or receiving means for receiving RDS broadcasting and adding a receiving function for DAB broadcasting. Assuming a radio receiver comprising program service name storage means for storing the program service name of a broadcast reception service in the memory device 3 and program service name display means for displaying the program service name on the display screen of the display device 4 (However, such a radio receiver is already known, for example, there is a radio broadcast receiver 100 described in the above-mentioned [Patent Document 1]).

  As a best mode of the present invention, a radio receiver 10 according to the present invention shown in FIG. 1 includes an FM / AM front end unit, an A / D as a circuit block of a conventional general FM / AM receiver. Converter, FM / AM stereo demodulator (1), PLL controller, control microcomputer (5), liquid crystal display device (3), button key input device (2), flash ROM memory device (4) In addition to a circuit block configuration including a digital audio selector and a D / A converter, an RDS data decoder extracts RDS data (including PI code) of digital data from the demodulated signal of the FM / AM stereo demodulator (1) RDS receiving unit (7) having a circuit configuration to which a unit (6) is added, a DAB front end, an A / D converter, a DAB baseband processing unit, M EG audio decoder unit, DAB receiver consisting of FIC data decoder (8) is a circuit block (9) has a circuit block structure applied. The receiving functions of the RDS receiving unit 7 and the DAB receiving unit 9 can be made to function separately under the control of the control microcomputer 5 and can be received simultaneously.

  Details of basic reception functions of the RDS receiver 7 and the DAB receiver 9 are well known in the art, and will be omitted. Hereinafter, an RDS reception service PI code transmitted from the RDS data decoder 6 to the control microcomputer 5, PS From the data, the SIB data of the DAB service transmitted from the FIC data decoder 8 of the DAB receiver 9 to the control microcomputer 5, and the data of the service label, the control microcomputer 5 determines the program service name of the RDS reception service. A description will be given of how to display on the display device 3 and how to correctly store the program service name of the RDS reception service in the memory device 4.

  The program service name display means of the radio receiver 10 according to the present invention searches for a program service name in a DAB broadcast having the same SId as the PI of the reception service, particularly when receiving an RDS broadcast. An alternative display means for displaying the program service name on the display device 3 as the program service name of the reception service of the RDS is provided, and the program service name storage means is adapted to receive the RDS broadcast at the time of RDS broadcast reception by the user's preset operation using the input device 2 When storing the program service name of the reception service in the memory device 4, the program service name in the DAB broadcast having the same SId as the PI of the reception service is searched, and the program service name of the searched DAB broadcast is received in the RDS broadcast. Substitute storage means for storing the program service name of the service in the memory device 4 is provided. I am characterized in.

  As the best mode for realizing the display of the correct program service name of the reception service of the RDS broadcast on the display device 3 and the storage in the memory device 4, the following four modes are mentioned.

  First, as shown in the flowchart of FIG. 2, for example, when the RDS broadcast is received, the program service name display means displays the program service name in the DAB broadcast having the same SId as the PI of the received service as the memory device. 4, the program service name storage determination means S 1 for determining whether or not the program service name storage determination means S 1 determines that there is a storage (Y), the program service name of the DAB broadcast is set as the program service name. When the program service name of the reception service is displayed on the display device 3 and the program service name storage determination means S1 determines that there is no storage (N), an ensemble search operation of the DAB broadcast is performed, and the PI of the reception service is determined. If a DAB broadcast service with the same SId is detected (Y), the program service name of the DAB broadcast service is RDS broadcast. When it is displayed on the display device 3 as the program service name of the reception service and no DAB broadcast service having the same SId as the PI of the reception service of the RDS broadcast is detected (N), the program of the reception service of the RDS broadcast Whether the service name data is normal data or data other than the program service name (dynamic PS) is determined based on whether or not the PS data has changed more than once within a certain period of time (for example, 8 seconds). In the case (Y), the program service display is not displayed (blank), and in the case of normal data that does not change (N), an alternative display means S2 that directly displays the RDS PS data as the program service name is provided. And

  In the above processing procedure, when a DAB broadcast service having the same SId as the PI of the RDS broadcast reception service is searched, the program service name of the DAB broadcast is preferentially replaced regardless of the PS data of the RDS broadcast. Is displayed.

  Next, in the flowchart shown in FIG. 3, when the program service name display means receives the RDS broadcast, the program service name data of the reception service is normal data or data other than the program service name (dynamic PS In the DAB broadcast having the same SId as the PI of the reception service when the data determination means S3 determines that the data other than the program service name (dynamic PS) is determined by the data determination means S3 (Y). A program service name storage determining unit S4 for determining whether or not a program service name is stored in the memory device 4, and if the program service name storage determining unit S4 determines that there is a storage (Y), the memory The program service name in DAB broadcasting having the same SId stored in the device 4 is the number of the receiving service of the RDS broadcasting. When it is displayed on the display device 3 as a service name and the program service name storage determination means S4 determines that there is no storage (N), the DAB ensemble search operation is performed and has the same SId as the PI of the reception service When a DAB service is detected, an alternative display means S5 for displaying the program service name of the DAB service on the display device 3 as the program service name of the RDS reception service is provided.

  In the above processing procedure, if the PS data of the receiving service at the time of receiving the RDS broadcast is normal, the program service name is displayed as it is. In the case of dynamic PS, the program service name of the service in DAB broadcasting having the same SId as PI is first stored in the memory. If there is no search from the apparatus 4, the ensemble search operation of DAB is made to search and the program service name of DAB broadcast is displayed instead.

  In any of the above processing procedures, if a program service name in DAB broadcasting having the same SId as the PI of the RDS broadcasting reception service is searched, the correct program service name is displayed.

  Next, in the flowchart shown in FIG. 4, when the program service name storage means stores the program service name in the memory device 4 at the time of receiving the RDS broadcast (at the time of preset operation), first, the DAB ensemble search operation is performed. If a service in the DAB broadcast having the same SId as the PI of the RDS broadcast reception service is detected (Y), the program service name of the DAB broadcast service is used as the program service name of the RDS reception service. If it is stored in the apparatus 4 and is not detected (N), it is determined whether the data of the program service name of the reception service of the RDS is normal data or data other than the program service name (dynamic PS) for a certain time (for example, 8). In the case of a changed dynamic PS (Y), the program data is In the case where the service name is not stored (error display), and the normal data does not change (N), the storage device 4 is provided with alternative storage means S6 for storing the RDS broadcast PS data as the program service name as it is. And This procedure is such that when a program service in the DAB broadcast having the same SId as the PI of the RDS broadcast reception service is retrieved by the ensemble search operation, the DAB broadcast service is preferentially regardless of the RDS PS data. The program service name is substituted and stored.

  Next, in the flowchart shown in FIG. 5, when the program service name storage means stores the program service name in the memory device 4 at the time of receiving the RDS broadcast (at the time of preset memory operation), first, the RDS broadcast In the same way as described above, it is determined whether the data of the program service name of the receiving service is normal data or data other than the program service name (dynamic PS). If the data is normal (N), the PS data of RDS broadcasting is used as it is. When the program service name is stored in the memory device 4 and is determined to be dynamic PS (Y), the DAB broadcast ensemble search operation is performed next, and the DAB broadcast having the same SId as the PI of the RDS broadcast reception service If a service is detected in (Y), the program service name of the DAB broadcast service is the program of the RDS broadcast reception service. Stored in the memory device 4 as-bis name, if it is not detected (N), it is assumed that not stored the program service display (error display), characterized in that it comprises the alternate storage unit S7.

  If the PS data of the RDS broadcast reception service is normal, the above processing procedure displays the program service name as it is, and in the case of dynamic PS, the ensemble search functions for the program service name of the DAB broadcast service having the same SId as PI. If it is detected and detected, the program service name of the DAB broadcast is substituted and stored.

  The above four processing procedures are all based on the RDS PI code and PS data from the RDS data decoder unit 6 and the DAB service SId data and service label data from the FIC data decoder unit 8. Needless to say, this is realized by performing control, transmitting the program service name to the display device 3 and the memory device 4, and displaying and storing them respectively.

  In addition, as a reminder, a radio receiver having the RDS broadcast and DAB broadcast reception functions according to the present invention, or a reception means capable of adding a DAB broadcast reception function in addition to the RDS broadcast reception function. The radio receiver includes an RDS broadcast receiver with a built-in DAB broadcast reception function, or a radio reception system in which a separate DAB broadcast receiver and an RDS broadcast receiver are connected and functioned including a control line.

It is a block diagram of the radio receiver provided with the receiving function of both RDS broadcasting and DAB broadcasting according to the present invention. It is a flowchart which shows the 1st process sequence of the alternative display means in the program service name display means of the radio receiver which concerns on this invention. It is a flowchart which shows the 2nd process sequence of the alternative display means in the program service name display means of the radio receiver based on this invention. It is a flowchart which shows the 1st process sequence of the alternative memory | storage means in the program service name memory | storage means of the radio receiver based on this invention. It is a flowchart which shows the 2nd process sequence of the alternative memory | storage means in the program service name memory | storage means of the radio receiver based on this invention. It is a block diagram of a radio broadcast receiver capable of receiving the RDS broadcast and DAB broadcast described in [Patent Document 1]. It is an example of the program service name list of the preset memory displayed on the display device, in which (a) the program service name is correctly displayed and (b) a case where erroneous display is included.

Explanation of symbols

1 FM / AM stereo demodulator
2 input devices
3 display devices
4 Memory device
5 Control microcomputer
6 RDS data decoder section
7 RDS receiver
8 FIC data decoder
9 DAB receiver
10 Radio receiver

Claims (1)

Receiving means for receiving digital multiplex FM broadcast and digital audio broadcast, or receiving means for receiving digital multiplex FM broadcast and capable of adding a digital audio broadcast receiving function, and a program service for receiving each broadcast In a radio receiver comprising program service name storage means for storing a name in a memory device, and program service name display means for displaying the program service name on a display screen of a display device,
The program service name display means, when receiving the digital multiplex FM broadcast, the program service name in the digital audio broadcast having the same service identification code as the program identification code of the reception service, the ensemble search operation in the digital audio broadcast reception or An alternative display means for searching from the memory device and displaying the searched program service name of the digital audio broadcast as the program service name of the receiving service of the digital multiple FM broadcast on the display screen of the display device,
The program service name storage means is a digital audio broadcast having a service identification code identical to the program identification code of the reception service when the program service name of the reception service is stored in the memory device when the digital multiplex FM broadcast is received. The program service name in the digital audio broadcast is retrieved by the ensemble search operation in the digital audio broadcast reception, and the retrieved program service name of the digital audio broadcast is stored in the memory device as the program service name of the reception service in the digital multiplex FM broadcast. A radio receiver comprising an alternative storage means for storing.

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