JP2007043350A - Radio receiver and control method of radio receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio receiver and a control method of a radio receiver applied to a radio receiver of a terrestrial digital audio broadcast system such as the DAB, which can simply and surely register information required for selecting a desired program to a memory. <P>SOLUTION: The radio receiver and the control method of the radio receiver select a program depending on the genre and the bit rate of programs and execute processing of a preset memory. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a radio receiver and a radio receiver control method, for example, DAB (Digital
It can be applied to a terrestrial digital audio broadcasting receiver by Audio Broadcasting. The present invention makes it possible to register a desired program in a simple and reliable manner by selecting a program based on the genre and bit rate of the program and executing a preset memory process.

  Conventionally, DAB conforming to the Eureka 147 standard has been put to practical use as a terrestrial digital audio broadcasting system. Here, this DAB broadcasts audio data compressed by orthogonal frequency division multiplex modulation using a transmission band of 1.5 [MHz], and one broadcast wave with this transmission band of 1.5 [MHz]. Is called an ensemble. For example, in a band of frequencies 174.928 to 239.200 [MHz] defined as band 3, 41 ensembles can be provided.

  Each ensemble is divided into groups called services. In DAB, programs of general broadcasting stations are provided by these services. As a result, DAB multiplexes multiple programs and broadcasts them using a single broadcast wave, and channel selection information, auxiliary information, etc. are provided through a fast information channel (FIC) transmitted by this single broadcast wave. Is done. Here, the channel selection information is information necessary for selecting a desired program from a plurality of programs broadcast by this one broadcast wave. The auxiliary information is information such as a program type indicating the genre of each program for a plurality of programs broadcasted by this one broadcast wave, and this genre is a pop music, rock music, classical music in a music program. Music and the like are provided, and sports, news, weather forecasts, etc. are provided in addition to music programs.

  A conventional in-vehicle DAB receiver that receives this DAB executes preset memory processing by manual operation or auto memory processing. That is, the in-vehicle DAB receiver is provided with a plurality of channel selection operators (preset keys) for instructing channel selection of each registered program, and each channel selection is associated with each channel selection operator. Information necessary for receiving the program registered in the operator for recording is recorded in the memory, and the program is registered in the operator for tuning. Here, the information necessary for receiving the program is the reception frequency of the broadcast wave and the above-mentioned channel selection information.

  The process of the preset memory is a process of accepting program registration to each channel selection operator. The preset memory processing by manual operation is performed by operating the operator for instructing registration and then operating the operator for channel selection for registering this service after receiving the service for registration. A series of information related to this service is registered in the memory and executed in association with the operator for the operation. As a result, the in-vehicle DAB receiver selects the ensemble by switching the reception frequency based on the information registered in the memory by operating the channel selection operator, and then selects the channel from a plurality of services provided by this ensemble. By selecting a service based on information and simply operating a channel selection operator in which a desired program is registered, a program registered in the channel selection operator is provided to the user.

  On the other hand, in the auto memory process, the preset memory process is executed by executing the processing procedure shown in FIG. That is, in this case, the in-vehicle DAB receiver moves from step SP1 to step SP2 and receives DAB. Subsequently, an operation by the user of the auto memory key for instructing processing of the auto memory is accepted, and in step SP4, the reception frequency is sequentially scanned to receive the ensemble sequentially, and the head service of each ensemble is sequentially registered in the memory. Thereby, the processing of the preset memory is completed by the auto memory, and the in-vehicle DAB receiver provides the user with the service recorded in the memory by operating the preset key in the subsequent step SP5.

  Regarding such channel selection processing, for example, in Japanese Patent Laid-Open No. 2000-91934, a plurality of services provided by one ensemble by the operation of the first operator are sequentially and cyclically provided to the user at a certain time interval. As provided, a method has been proposed in which a service is determined by operating a second operator.

By the way, when preset memory processing is executed by auto memory processing as described above, preset memory processing can be executed by a simple operation, but it is difficult to register a program desired by the user in the memory. There's a problem. One method for solving this problem is to execute preset memory processing by manual operation. In this case, it is necessary to execute a series of operations for each tuning operator. The operation becomes complicated. In particular, in DAB, since a large number of services are provided, it is not easy even if it is limited to an operation for selecting a service to be registered in the memory. Specifically, in London, 50 services are provided, and only about 13 pop music services are provided by a pop music specialist station alone.
JP 2000-91934 A

  The present invention has been made in view of the above points, and intends to propose a radio receiver and a radio receiver control method capable of registering a desired program in a memory simply and reliably.

  To solve this problem, the invention of claim 1 is applied to a radio receiver, selects one broadcast wave from a plurality of broadcast waves received by an antenna, and is multiplexed from the selected one broadcast wave. The program type information indicating each genre of each program, the channel selection information necessary for selecting each program, and the receiving system for outputting an audio signal related to one program, and the selection of the registered program are selected. A plurality of channel selection operators for instructing, a memory for recording information necessary for selection of each program registered in the channel selection operator, and operation of the channel selection operators, A control unit that instructs the reception system to receive the program registered in the selected channel selection operator according to the corresponding information recorded in the memory, and the control unit is configured to select the plurality of selections. Assigning the program to station operators In response to the instruction, the reception system is controlled, the one broadcast wave selected in the reception system is sequentially switched, the bit rate of each program multiplexed on each broadcast wave, the channel selection information, the program type Necessary for selection of the corresponding program so that the information is sequentially detected and the program is assigned to the plurality of channel selection operators in the genre instructed by the user in order from the program having the higher bit rate. Information is recorded in the memory.

  Further, the invention of claim 3 selects a broadcast wave from a plurality of broadcast waves received by an antenna, and information on a program type indicating each genre of each program multiplexed from the selected broadcast wave, Reproducing the channel selection information necessary for selection of each program and outputting an audio signal related to one program; a plurality of channel selection operators for instructing selection of each registered program; A memory for recording information necessary for selecting each program registered in the channel selection operator, and the selection according to the corresponding information registered in the memory by the operation of the channel selection operator. The program is applied to a control method of a radio receiver having a control unit for instructing the reception system to receive a program recorded in the channel selection operator, and the program is applied to the channel selection operators. According to the allocation instruction of Program search that sequentially switches the one broadcast wave selected by the receiving system and sequentially detects the bit rate of each program multiplexed on each broadcast wave, the channel selection information, and the program type information And the genre instructed by the user based on the detection result of the program search step, and sequentially assigning the program to the plurality of channel selection operators from the program having the higher bit rate. And a program registration step of recording information necessary for selecting a corresponding program in the memory.

  According to the configuration of claim 1, when applied to a radio receiver, one broadcast wave is selected from a plurality of broadcast waves received by an antenna, and each genre of each program multiplexed from the selected one broadcast wave The program type information indicating the channel information, the channel selection information necessary for selecting each program, and a reception system for outputting an audio signal related to one program, and a plurality of selections for instructing the selection of registered programs, respectively. Station operator, memory for recording information necessary for selecting each program registered in the channel selection operator, and correspondence recorded in the memory by operation of the channel selection operator A control unit that instructs the reception system to receive a program registered in the selected channel selection operator, and the control unit sends the plurality of channel selection operators to the channel selection operator. In response to the program allocation instruction of The transmission system is controlled so that the one broadcast wave selected by the reception system is sequentially switched, and the bit rate of each program multiplexed on each broadcast wave, the channel selection information, and the program type information are sequentially detected. The genre instructed by the user, and the information necessary for selecting the corresponding program is stored in the memory so that the program is assigned to the plurality of channel selection operators sequentially from the program having the higher bit rate. If recorded, programs for a desired genre, which are high in bit rate and good in sound quality, are sequentially registered in the channel selection operator. Here, it can be said that a program with a high bit rate and good sound quality is more likely to be a program desired by the user than a program with low bit rate and poor sound quality. Thus, according to the configuration of claim 1, a program having a high possibility of being desired by a user is automatically assigned to a program for channel selection sequentially in response to an instruction for assigning the program to a channel selection operator. Thus, the desired program can be easily and surely registered in the memory.

  Thereby, according to the structure of Claim 3, the control method of the radio receiver which can register memory of the desired program easily and reliably can be provided.

  According to the present invention, a desired program can be easily and reliably registered in a memory.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

(1) Configuration of Embodiment FIG. 2 is a front view of an in-vehicle DAB receiver according to an embodiment of the present invention. This in-vehicle DAB receiver 1 is provided with a power source operator (Power) 2, a source switching operator (Source) 3, and a band switching operator (Band) 4 on the left end side for instructing power on / off. . Here, the operator 3 for switching the source is an operator for selecting DAB, conventional radio broadcasting, and a compact disc. The operator 4 for switching the band is selected by the operation of the operator 3 for switching the source. In this case, the operator selects AM broadcast, FM broadcast, or LW broadcast. When DAB is selected, the operator selects a DAB band.

  The in-vehicle DAB receiver 1 is provided with a seek operator (Seek) 5 and a program type operator (PTY) 6 on the right end side. Here, the seek operator 5 is an operator that switches the currently received service to the next service, and the program type operator 6 is an operator that indicates a program to be listened to by the program type. The in-vehicle DAB receiver 1 executes a so-called program seek process when the seek type operator 5 is operated after the program type operator 6 is operated under the control of the controller 12 described later.

  The in-vehicle DAB receiver 1 is provided with a channel selection operator (preset key) 7A to 7F and an auto memory operator (A Memo) 8 for instructing processing of the auto memory at the lower end side, and further in the center. A display unit 9 such as a liquid crystal display panel is provided. In the in-vehicle DAB receiver 1, settings by the operations of the various operators 2 to 8 are displayed on the display unit 9. In the example shown in FIG. 2, DAB is selected by the operation of the source switching operator 3. It is shown that band 1 (Band 1) is selected by operating the operator of the band switching operator 4 and that a pop music service is selected by operating the program type operator 6.

  FIG. 3 is a block diagram showing a configuration relating to DAB of the in-vehicle DAB receiver 1. In this in-vehicle DAB receiver 1, the tuner 11 selects an ensemble broadcast wave related to a service instructed by the user from a plurality of broadcast waves received by the antenna 13 under the control of the controller 12, and outputs an intermediate frequency signal. The analog-to-digital conversion circuit (A / D) 14 converts the intermediate frequency signal from analog to digital and outputs the result. The baseband processing unit 15 performs quadrature demodulation, fast Fourier transform processing, and Viterbi decoding processing on the digital signal output from the analog-to-digital conversion circuit 14, outputs audio data related to the service instructed by the user, and also ensembles The controller 12 is notified of various types of information using the included high-speed information channel. The audio decoder 16 decompresses the audio data output from the baseband processing unit 15 and outputs the resulting audio data to an audio signal processing system (not shown). In this in-vehicle DAB receiver 1, a speaker is driven by this audio signal processing system, thereby providing the user with the audio of the service desired by the user. The in-vehicle DAB receiver 1 is provided with a configuration for receiving a conventional radio broadcast controlled by the controller 12 and a configuration for reproducing a compact disc, in addition to the configuration related to the DAB.

  The controller 12 is arithmetic processing means for controlling the operation of the in-vehicle DAB receiver 1 by executing a processing program recorded in a memory (not shown). In this embodiment, the program related to the processing of the controller 12 is provided by being pre-installed by recording in a memory, but instead of providing by such pre-installation, the program is made via a network such as the Internet. You may provide by download and may provide by downloading from recording media, such as an optical disk, a magnetic disc, and a memory card.

  Thus, the controller 12 starts up the operation by operating the power supply operation element 2 and sequentially circulates the source provided to the user by DAB, conventional radio broadcasting, and compact disc each time the source operation element 3 is pressed. The band of the source to be provided to the user is switched by operating the band switching operator 4. Further, the genre of the service provided to the user is sequentially switched by pressing the program type operation element 6, and this genre is displayed on the display unit 9. Further, the overall operation is controlled so that the program seek process is executed by the operation of the seek operator 5.

  On the other hand, when any of the channel selection operators 7A to 7F is operated, the tuner 11 is operated by the operated channel selection information recorded in a memory (not shown) corresponding to the channel selection operator. After selecting the ensemble by instructing the switching of the reception frequency, the baseband processing unit 15 is instructed to select the service, and the service related to the program registered in the channel selection operators 7A to 7F operated thereby. Control the overall operation to receive.

  On the other hand, when the user instructs the auto memory processing, the program is sequentially registered in the channel selection operators 7A to 7F by executing the processing procedure of FIG. That is, when starting this processing procedure, the controller 12 moves from step SP11 to step SP12 and receives DAB. Subsequently, the process proceeds to step SP13, where a genre selection is accepted for a service to be registered by presetting by operating the program type operator 6. In the following step SP14, after the program type is selected, the operation of the auto memory operator 8 is accepted within a certain time (for example, within 8 seconds), and in the following step SP15, the ensemble is sequentially switched and accepted in step SP12. Search for program type services. As a result, the controller 12 sequentially detects receivable services for the program type designated by the user. In this process, the controller 12 detects the bit rate of each service based on information on the amount of data related to each program set in the high-speed information channel.

  Subsequently, the controller 12 proceeds to step SP16, selects a service from the services detected in this way in descending order of the bit rate, and sequentially registers the selected services in the channel selection operators 7A to 7F. That is, in this case, the reception frequency of the ensemble detected in step SP15 and the channel selection information of the corresponding service in the ensemble are registered in the memory in association with the corresponding channel selection operators 7A to 7F. Execute memory processing. If the bit rates are the same, the controller 12 registers services in alphabetical order of service names. Also, programs are sequentially registered in the channel selection operators 7A to 7F, and programs that cannot be registered are given up.

  As a result, in step SP17, the controller 12 provides the service recorded in the memory to the user by operating the preset key. The controller 12 accepts an operation of a preset key related to the processing of the auto memory for each program type, and accordingly, for each program type, the reception frequency of the ensemble is associated with the channel selection operators 7A to 7F. Register service tuning information in memory. In the same manner as described above for the conventional configuration, registration of a program is accepted by the operator for selecting a channel by operating a manual, thereby accepting a change of the program registered by the processing procedure of FIG.

  As a result, when the channel selection operators 7A to 7F are selected and operated as described above, the controller 12 receives the ensemble reception frequency and service recorded in the memory for the currently selected program type. The tuner 11 and the baseband processing unit 15 are controlled by the channel selection information, and the program desired by the user is provided.

(2) Operation of Embodiment In the above configuration, in this in-vehicle DAB receiver 1 (FIG. 2), a large number of broadcast waves received by the antenna 13 are selected by the tuner 11 and converted into intermediate frequency signals. After the intermediate frequency signal is converted into a digital signal, it is processed by the baseband processing unit 15, and a program desired by the user is selected from a plurality of programs multiplexed and transmitted by the selected one broadcast wave. The audio signal of this program is decoded by the audio decoder 16 and provided to the user. Also, by the processing in the baseband processing unit 15, program type information indicating each genre of each program multiplexed on this one broadcast wave and channel selection information necessary for selecting each program are reproduced. In addition, a desired program is selected from a plurality of programs using the broadcast wave based on the channel selection information, and further, a desired program is selected by a PTY search process.

  On the other hand, when the program type is instructed by the operation of the program type operator 6 and the auto memory operator 8 is operated within a predetermined time after the program type is instructed, the tuner 11 is controlled by the controller 12 as a control unit. The reception wave is switched and the received broadcast waves are sequentially switched, and the program type and bit rate of each program broadcast by each broadcast wave are searched. Also, according to the search result, programs of a preset program type are selected in descending order of bit rate, and information necessary for channel selection of these programs is stored in the memories related to channel selection operators 7A to 7F. To be recorded. As a result, the program is automatically registered in the channel selection operators 7A to 7F.

  Here, the program registered in this way is a program of a genre desired by the user and has a high bit rate. In such a program having a high bit rate, a program having a low bit rate is used. It can be said that there is a high possibility that the program is desired by the user. Thus, in this embodiment, a desired program can be automatically registered in the memory by a simple operation.

(3) Effects of the embodiment According to the configuration described above, a desired program can be registered in the memory simply and reliably by selecting a program based on the program genre and the bit rate and executing the preset memory processing. it can.

  At this time, information necessary for program selection is recorded in the memory and registered in the memory, and the information necessary for the program selection is at least the reception frequency of the broadcast wave and the channel selection information. By applying, it is possible to register a desired program in a memory simply and reliably.

  In the above-described embodiment, the case where a program is selected and registered in descending order of the bit rate for each genre has been described. However, the present invention is not limited to this, and depending on the genre, the registration in the order of high bit rate may be performed. The process may be stopped. In such a genre, news can be applied.

  Further, in the above-described embodiments, the case where the present invention is applied to the in-vehicle DAB receiver has been described. However, the present invention is not limited thereto, and the present invention may be applied to a stationary DAB receiver. Furthermore, the present invention can be widely applied to various radio broadcast receivers that multiplex and provide a large number of programs using one broadcast wave.

  The present invention relates to a radio receiver and a radio receiver control method, and can be applied to, for example, a digital terrestrial audio broadcasting receiver using DAB.

It is a flowchart which shows the process sequence of the controller which concerns on the vehicle-mounted DAB receiver which concerns on Example 1 of this invention. 1 is a front view of an in-vehicle DAB receiver according to Embodiment 1 of the present invention. It is a block diagram which shows the vehicle-mounted DAB receiver of FIG. It is a flowchart which shows the process sequence which concerns on the conventional auto memory.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Automotive DAB receiver, 2-6, 7AS-7F, 8 ... Operator, 11 ... Tuner, 12 ... Controller, 14 ... Analog-digital conversion circuit, 15 ... Baseband processing part

Claims (3)

Program type information indicating each genre of each program multiplexed from the selected one broadcast wave selected from a plurality of broadcast waves received by the antenna, necessary for selecting each program A receiving system for reproducing channel selection information and outputting an audio signal related to one program;
A plurality of channel selection operators for instructing the selection of each registered program;
A memory for recording information necessary for selecting each program registered in the channel selection operator;
A control unit for instructing the reception system to receive a program registered in the selected channel selection operator in accordance with the corresponding information recorded in the memory by operating the channel selection operator; Have
The controller is
By instructions for assigning the program to the plurality of channel selection operators,
The reception system is controlled to sequentially switch the one broadcast wave selected by the reception system, and the bit rate of each program multiplexed on each broadcast wave, the channel selection information, and the program type information are sequentially detected. And
Information necessary for selection of a corresponding program is recorded in the memory so that the program is assigned to the plurality of channel selection operators in order from the program of a genre designated by the user and having a higher bit rate. A radio receiver characterized by. Information necessary for selecting a program to be recorded in the memory is
The radio receiver according to claim 1, wherein at least the reception frequency of the broadcast wave and the channel selection information are included. Program type information indicating each genre of each program multiplexed from the selected one broadcast wave selected from a plurality of broadcast waves received by the antenna, necessary for selecting each program A receiving system for reproducing channel selection information and outputting an audio signal related to one program;
A plurality of channel selection operators for instructing the selection of each registered program;
A memory for recording information necessary for selecting each program registered in the channel selection operator;
A control unit for instructing the reception system to receive a program registered in the selected channel selection operator in accordance with the corresponding information recorded in the memory by operating the channel selection operator; A radio receiver control method comprising:
In response to an instruction to assign the program to the plurality of channel selection operators, the reception system is controlled, and the one broadcast wave to be selected by the reception system is sequentially switched and multiplexed on each broadcast wave. A program search step for sequentially detecting the bit rate of each program, the channel selection information, and the program type information;
Based on the detection result in the program search step, the genre is instructed by the user, and the program is assigned to the plurality of channel selection operators sequentially from the program having the higher bit rate. And a program registration step of recording information necessary for selecting a program in the memory.

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