WO2010004676A1 - 受信装置 - Google Patents
受信装置 Download PDFInfo
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- WO2010004676A1 WO2010004676A1 PCT/JP2009/002038 JP2009002038W WO2010004676A1 WO 2010004676 A1 WO2010004676 A1 WO 2010004676A1 JP 2009002038 W JP2009002038 W JP 2009002038W WO 2010004676 A1 WO2010004676 A1 WO 2010004676A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/55—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for traffic information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H40/00—Arrangements specially adapted for receiving broadcast information
- H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
- H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/42—Arrangements for resource management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H2201/00—Aspects of broadcast communication
- H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
- H04H2201/13—Aspects of broadcast communication characterised by the type of broadcast system radio data system/radio broadcast data system [RDS/RBDS]
Definitions
- the present invention relates to a vehicle-mounted receiving device, and more particularly to a receiving device that receives traffic information (TMC: Traffic Message Channel) broadcast from an RDS (Radio Data System) station.
- TMC Traffic Message Channel
- RDS Radio Data System
- the conventional receiving device disclosed in Patent Document 1 receives a broadcast of a predetermined broadcast station selected by a viewer by a main tuner and is broadcast from an RDS broadcast station by a background tuner (sub-tuner).
- An RDS data block (hereinafter referred to as a group type) is received.
- a transmission time between a specific group type including TMC data and a different group type is estimated, and a radio process (task) such as searching for an alternative station is executed with this transmission time, and the transmission time has elapsed.
- reception of TMC data is resumed.
- TMC data can be stably received using the background tuner without impairing the diversity (search for alternative station) function.
- the conventional receiving apparatus estimates the transmission time between TMC data, there is a possibility that TMC data cannot be received stably if the accuracy of estimation of the transmission time is insufficient. Further, when the RDS data itself cannot be received, it is necessary to reestimate the transmission time even if the reception is temporarily interrupted, and there is a problem that the recovery is delayed.
- the present invention has been made to solve the above-described problems, and can stably receive TMC data, and can receive TMC data immediately after returning even if RDS data cannot be received.
- An object of the present invention is to obtain a simple receiving device.
- the receiving apparatus includes a first receiving system unit that receives a broadcast signal from a broadcasting station and reproduces radio sound, and a second receiving system unit that receives RDS data in the broadcast signal.
- the second reception system unit determines an interval between the RDS demodulator for demodulating RDS data and an RDS clock synchronized with the RDS data from the broadcast signal, and an interval between group types including traffic information in the RDS data.
- a counter that counts in synchronization with an RDS clock; and a radio control unit that receives a group type including the traffic information and executes radio processing other than reception of the traffic information while the counter is counting. .
- the radio control unit receives the group type including the traffic information.
- radio processing other than reception of traffic information is executed while the counter is counting.
- TMC data can be received with high accuracy in synchronization with the RDS clock, and the interval between TMC data can be specified accurately, so that radio processing such as searching for alternative stations can be performed efficiently. There is an effect.
- FIG. 3 is a diagram for explaining an example of counters A to D in FIG. 2. It is a flowchart which shows the flow of operation
- FIG. 1 is a block diagram showing a configuration of a radio receiver to which a receiving apparatus according to Embodiment 1 of the present invention is applied.
- a radio receiver 1 according to Embodiment 1 has two tuners, a main and a sub, and includes a radio antenna 2, a main tuner front end 3, an audio processing circuit 4, an amplifier circuit 5, a speaker 6, A sub tuner front end 7, a band pass filter 8, an RDS demodulator (RDS demodulator) 9, a CPU 10 and a display 11 are provided.
- RDS demodulator RDS demodulator
- the radio receiver 1 receives a plurality of broadcast waves via the radio antenna 2, these broadcast waves are detected by the main tuner front end 3, and are given to the audio processing circuit 4 and the amplifier circuit 5. Elements related to the radio sound reproduction processing in the main tuner front end 3, the sound processing circuit 4, the amplifier circuit 5, and the CPU 10 constitute a first reception system unit that reproduces radio sound from a broadcast wave (broadcast signal).
- the main tuner front end 3 includes an RF circuit 3a, a mixer circuit 3b, and a detection circuit 3c.
- the RF circuit 3a selects a received signal from the radio antenna 2 and amplifies it at high frequency.
- the mixer circuit 3b mixes the signal amplified at high frequency with the RF circuit 3a and the local oscillation frequency signal to generate an intermediate frequency (IF) signal.
- the detection circuit 3c detects a signal modulated from the intermediate frequency signal generated by the mixer circuit 3b.
- the audio processing circuit 4 is a component that performs audio processing on the signal from the main tuner front end 3 and separates it into, for example, a stereo signal.
- the amplifying circuit 5 amplifies the output of the audio processing circuit 4 to power that can be output by the speaker 6.
- the speaker 6 inputs the signal amplified by the amplifier circuit 5 and outputs radio sound.
- the sub-tuner front end 7 receives and detects the broadcast from the RDS station via the radio antenna 2 and outputs it to the bandpass filter 8.
- the sub tuner front end 7 includes an RF circuit 7a, a mixer circuit 7b, and a detection circuit 7c.
- the RF circuit 7a selects a received signal from the radio antenna 2 and amplifies it at high frequency.
- the mixer circuit 7b generates an intermediate frequency signal from the output of the RF circuit 7a.
- the detection circuit 7c detects a signal modulated from the intermediate frequency signal generated by the mixer circuit 7b.
- the band pass filter 8 passes only the RDS modulated signal having a frequency of 57 kHz and the pilot tone having a frequency of 19 kHz among the signals from the main tuner front end 3.
- the RDS demodulator 9 demodulates the RDS modulated signal that has passed through the bandpass filter 8 to generate an RDS clock and RDS data. When there is no RDS modulation signal, the pilot tone is divided by 16 to generate the same clock as the RDS clock.
- the CPU 10 controls the front ends 3 and 7 and the audio processing circuit 4, and extracts TMC data extracted from the RDS data demodulated by the RDS demodulator 9 and data obtained by radio processing (tasks) other than reception of TMC information.
- the display 11 receives display data created by the CPU 10 and displays TMC information and other radio information defined by the display data on the display screen.
- the sub-tuner front end 7 executes the following radio process (task) in addition to the reception of the TMC data described above.
- a function station list
- AF station Alternative Frequecy
- a function of searching for an alternative station AF station: Alternative Frequecy
- AF search A function of searching for an alternative station that broadcasts the same content when the reception state at the main tuner front end 3 deteriorates
- a TA Traffic Announcement
- EON Enhanced Other Network
- the CPU 10 executes a task switching processing program according to the gist of the present invention, so that the receiving station switching control unit is realized as a specific means in which software and hardware cooperate.
- the receiving station switching control unit controls the sub-tuner front end 7 using the RDS data and RDS clock input by the CPU 10 and receives other TMC data properly while performing other radio processing ( Task).
- FIG. 2 is a block diagram showing the configuration of the above-described receiving station switching control unit and its peripheral components. 2, the description of the band pass filter 8 in FIG. 1 is omitted.
- the receiving station switching control unit 10A includes a decoder 12, a minimum gap measurement unit 13, a calculation unit 14, a counter group (counter) 15, an application counter determination unit 16, and a radio control unit 17.
- the decoder 12 receives the RDS data and RDS clock generated by the RDS demodulator 9 and displays the TMC data extracted by decoding the RDS data and the data obtained by radio processing (task) other than the reception of TMC information. Create data. Information defined by the display data is displayed on the display screen of the display 11.
- RDS data is continuously transmitted in units of group types, which are 104-bit data blocks. There are various types of group types depending on the purpose of use, and TMC data belongs to group type 8A.
- the minimum gap measuring unit 13 measures the number of group types received at intervals between the group types 8A including TMC data among the group types sequentially transmitted as RDS data, and out of the number of group types as a measurement result.
- the minimum value is determined as a gap unique to the TMC data receiving station.
- the calculation unit 14 defines the specifications (count target values) of the counters A to D constituting the counter group 15 using the gap value determined by the minimum gap measurement unit 13.
- the counter group 15 includes counters (first to fourth counters) A to D in which count target values corresponding to predetermined use purposes are set by the arithmetic unit 14, and triggered by an RDS clock synchronized with RDS data. Each count target value is counted.
- the counting operation of these counters A to D gives timing for switching between the TMC data receiving station and other broadcasting stations.
- the application counter determination unit 16 determines an application counter from the counters A to D of the counter group 15 according to the RDS data reception status and the contents of the TMC data, and notifies the radio control unit 17 of the count status of the application counter. .
- the radio control unit 17 performs switching control between reception of TMC data by the sub-tuner front end 7 and execution of other radio tasks based on the counter status notified from the application counter determining unit 16.
- TMC data is repeatedly transmitted at the same time at the same time at least twice (EN ISO 14819-1: 2002).
- the number of group types received at the time interval at which the TMC data is transmitted is a gap. For example, if the gap is 3, three group types are received between the TMC data.
- the transmission interval of TMC data (time interval at which TMC data is transmitted) is defined in group type 3A.
- group type 3A the transmission interval of TMC data
- the RDS clock (1187.5 Hz) is obtained by dividing the subcarrier (57 kHz) of an actual FM broadcast station by 48, the accuracy is extremely high and the RDS data is synchronized with the RDS data. Since the subcarrier is the third harmonic of the pilot tone (19 kHz), it is possible to extract a highly accurate RDS clock by receiving an FM broadcast station that includes the pilot tone in the broadcast signal.
- the RDS clock is used as a trigger, the gap between the group types including the same content of TMC data is measured using the 104-bit group type as a measurement unit, and the count target values of the counters A to D are calculated from the gap of the measurement result. And count in synchronization with the RDS clock. In this way, it is possible to efficiently execute other radio tasks in the meantime while properly receiving TMC data.
- FIG. 3 is a diagram for explaining an example of the counters A to D in FIG. 2.
- counters A and B are defined as counters for calculating the number of group types transmitted between group types 8A including TMC data.
- the counter (first counter) A is applied by the application counter determination unit 16 when the TMC data that will be received next time is expected to have the same contents as the previously received TMC data, and the same It is a counter that defines the execution time of a radio task (radio task other than TMC data reception) that skips reception of the group type including the content TMC data.
- the number of group types (count target value) to be counted by the counter A is 2 ⁇ Gap + 1.
- This count target value corresponds to the interval between reception of a group type including TMC data and reception of the next group type including new TMC data after skipping reception of the group type including the same TMC data. To do.
- Gap is the minimum gap determined by the minimum gap measuring unit 13.
- the counter A is provided in consideration that the TMC data having the same content in the RDS data is continuously transmitted at least twice, and includes the TMC data having the same content by counting up to the target count value. Reception of the group type is skipped, and radio tasks other than reception of TMC data are performed during that time.
- the counter (second counter) B When the content of the TMC data received last time is unknown, or when the TMC data received last time has the same content as the TMC data received this time, the counter (second counter) B performs It is a counter to be applied, and counts the number of group types for Gap (minimum gap) as a count target value.
- the counter B is applied, and while the counter B is activated, a radio task other than the reception of the TMC data is performed.
- counters C and D are applied when TMC data reception is disabled.
- the counter (third counter) C is a counter that is applied when the TMC data cannot be received due to some influence, and gives up the reception of TMC data from the receiving station until the reception is interrupted. The reception waiting time until is counted.
- the number of group types to be counted by the counter C is defined as Gap + 2 + 1. That is, the number of group types corresponding to the minimum gap (Gap), the number of group types (2) of the previous TMC data and the subsequent TMC data to be received at the interval corresponding to the gap, and one group type (1) as a margin.
- the added time corresponds to the TMC data reception standby time.
- the counter (fourth counter) D is a counter applied when the count target value is counted up by the counter C (when TMC reception standby times out), and is a time for performing a radio task other than TMC data reception Count.
- the count target value of the counter D is defined as Gap-1. That is, a value obtained by subtracting the number of group types (1) corresponding to the margin counted by the counter C from the number of group types corresponding to the minimum gap (Gap).
- FIG. 4 is a flowchart showing a flow of operations performed by the radio receiver in FIG. 1, and shows a flow of switching operation between TMC data reception and other radio tasks in the sub-tuner front end 7.
- the radio control unit 17 tunes the sub-tuner front end 7 to an RDS station (hereinafter referred to as a TMC receiving station as appropriate) that transmits a group type including TMC data (step ST1).
- RDS station hereinafter referred to as a TMC receiving station as appropriate
- the sub-tuner front end 7 receives the broadcast from the TMC receiving station via the radio antenna 2, and the RDS modulation signal extracted by the band pass filter 8 is output to the RDS demodulator 9.
- the RDS demodulator 9 demodulates the RDS clock and RDS data from the RDS modulated signal and outputs the demodulated signal to the receiving station switching control unit 10A.
- the minimum gap measurement unit 13 identifies the group type 8A in the RDS data and determines the minimum number of group types existing in the interval between the group types 8A.
- the RDS clock is counted as a trigger.
- the minimum gap measurement unit 13 inputs the TMC data received from the TMC receiving station for a predetermined measurement time, executes the above counting process, and the minimum value of the gap between the 8A data obtained as a measurement result. (Minimum gap) is extracted and set to a value unique to the TMC receiving station (step ST2). The gap (minimum gap) determined by the minimum gap measurement unit 13 is output from the minimum gap measurement unit 13 to the calculation unit 14.
- the calculation unit 14 defines the count target values of the counters A to D as shown in FIG. 3 using the gap value acquired from the minimum gap measurement unit 13 (step ST3).
- the application counter determination unit 16 determines an application counter from the counters A to D according to the contents of the received TMC data and the reception status of the RDS data.
- the application counter means TMC reception time and radio task execution time, and the radio control unit 17 controls the sub-tuner front end 7 in accordance with the time, and switches between TMC reception and other radio tasks (step ST4).
- the radio control unit 17 has a TMC station switching function when TMC reception becomes impossible due to an electric field drop or the like (step ST5), and if the change of the TMC reception station is not set, the radio control unit 17 returns to step ST4. .
- the radio control unit 17 returns to step ST1, tunes to a new TMC receiving station, and repeats the above processing.
- FIG. 5 is a diagram for explaining processing when the sub-tuner can stably receive TMC data.
- FIG. 5 shows a case where the minimum gap (Gap) is a three group type.
- the application counter determining unit 16 applies the counter B, Until the counter B reaches the count target value, the radio tuner 17 controls the sub-tuner front end 7 and performs the radio tasks (1) to (3) described above.
- the radio control unit 17 controls the sub-tuner front end 7 to indicate radio tasks (radio tasks other than TMC reception) indicated by “Radio” in FIG. ).
- the same “TMC1” may be transmitted following the latest “TMC1”. is expected.
- the radio control unit 17 controls the sub-tuner front end 7 to execute a radio task other than TMC reception.
- the reception of the group type including the TMC data having the same content is skipped. This allows more time to be allocated to radio tasks other than TMC reception.
- FIG. 5 shows a case where TMC data having the same content is transmitted three times in succession.
- the latest TMC data matches the content of the previously received TMC data (TMC1). Repeat the process. In this way, radio tasks are executed between TMC data gaps.
- FIG. 6 is a diagram for explaining processing when the sub-tuner is temporarily unable to receive TMC data. As shown in FIG. 6, after “TMC0" was previously received, "TMC1" TMC data or other RDS data (group type) transmitted when counter B completes the gap count cannot be received. If this is the case, the application counter determination unit 16 switches from the counter B to the counter C.
- counting by the counter C is started by incrementing the count value as time elapses for each group type from the point of no reception. While the counter C is counting, the radio control unit 17 waits for reception of TMC data from the TMC receiving station so far. That is, the TMC receiving station is not switched immediately, and the tuning of the TMC receiving station is maintained.
- the application counter determining unit 16 determines the contents of the previous TMC data (1 Since the first TMC 1) is unknown, switching from the counter C to the counter B and if the sub-tuner can stably receive the TMC data, the same processing as in FIG. 5 is repeated.
- FIG. 7 is a diagram for explaining processing when the sub tuner cannot receive TMC data and the counter C times out.
- TMC data or other data is counted before the counter C counts the target value. This shows a case where the RDS data cannot be received.
- the application counter determination unit 16 applies the counter D and starts counting.
- the radio control unit 17 controls the sub-tuner front end 7 to execute a radio task (radio task other than TMC reception).
- the application counter determining unit 16 switches to the counter C and starts counting, and the radio control unit 17 controls the sub-tuner front end 7 to tune to the TMC receiving station so far. To do. Thereby, TMC data reception is tried again. In this state, as shown in FIG. 7, when a group type including TMC data (TMC2) is received, the same processing as in FIG. 5 is repeated. On the other hand, when the TMC data is not received and the counter C times out again, the above process is repeated.
- TMC2 group type including TMC data
- the radio control unit 17 includes the counter that counts the interval between the group types 8A including the TMC data in the RDS data in synchronization with the RDS clock as a trigger.
- the tuner front end 7 is controlled to receive the group type 8A, and radio processing other than reception of TMC data is executed while the counter is counting.
- a minimum gap measurement unit 13 that measures the number of group types received at intervals between group types 8A including TMC data and defines the minimum value of the group type as a gap
- the counter B includes an RDS clock.
- the radio control unit 17 controls the sub-tuner front end 7 so as to execute radio processing other than reception of TMC data while the counter B is counting.
- the frequency accuracy is high, and the RDS clock is synchronized with the RDS data with a counter triggered by the RDS clock, thereby counting the interval between the TMC data. Since TMC data can be accurately received in synchronization with the clock and the interval between the TMC data can be accurately specified, radio processing such as searching for an alternative station can be executed efficiently. For example, the data reception accuracy can be improved as compared with the case where a timer in the radio receiver 1 that is not synchronized with the RDS data is used.
- group type 8A including TMC data having the same contents is repeatedly transmitted, and then group type 8A including TMC data is received.
- the counter C that counts the standby interval for waiting for reception of the group type 8A including the TMC data from the time when the reception of the RDS data is interrupted, in synchronization with the RDS clock, and the counter A counter D that counts a predetermined radio processing interval in synchronization with the RDS clock from the time when the standby interval timed out in C, and the radio control unit 17 waits for reception of TMC data while the counter C is counting,
- the sub tuner front end 7 is controlled so as to execute radio processing other than reception of TMC data. In this way, when TMC data cannot be received, radio processing (tasks) other than reception of TMC data can be executed efficiently, and reception of TMC data is performed immediately after the communication state is restored. Can be resumed.
- the receiving apparatus can stably receive TMC data and can receive TMC data immediately after returning even if RDS data cannot be received.
- a receiving apparatus comprising: a first reception system unit that receives a broadcast signal from a station and reproduces radio sound; and a second reception system unit that receives RDS data in the broadcast signal.
- An RDS demodulator that demodulates RDS data and an RDS clock synchronized with the RDS data from the broadcast signal, and a counter that counts an interval between group types including traffic information in the RDS data in synchronization with the RDS clock. And receiving the group type including the traffic information and performing radio processing other than the reception of the traffic information during the counting of the counter. Since it is configured to include a that radio control unit, it relates to a receiving apparatus for vehicle, is particularly suitable for use in such a receiver for receiving the traffic information is broadcast from the RDS station.
Abstract
Description
実施の形態1.
図1は、この発明の実施の形態1による受信装置を適用したラジオ受信機の構成を示すブロック図である。図1において、実施の形態1によるラジオ受信機1は、メインとサブの2つのチューナを有しており、ラジオアンテナ2、メインチューナフロントエンド3、音声処理回路4、増幅回路5、スピーカ6、サブチューナフロントエンド7、バンドパスフィルタ8、RDS復調器(RDS復調部)9、CPU10及び表示器11を備える。
サブチューナフロントエンド7では、ラジオアンテナ2を介してRDS局からの放送を受信し検波した後、バンドパスフィルタ8へ出力する。なお、サブチューナフロントエンド7は、RF回路7a、ミキサ回路7b及び検波回路7cを備える。RF回路7aは、ラジオアンテナ2からの受信信号を選局して高周波増幅する。ミキサ回路7bは、RF回路7aの出力から中間周波数信号を生成する。検波回路7cは、ミキサ回路7bで生成された中間周波数信号から変調された信号を検波する。
(1)現在受信可能な放送局をリスト化して保持し、常にアップデートする機能(ステーションリスト)。
(2)メインチューナフロントエンド3での受信状態が悪化した際、同一内容を放送する代替局(AF局;Alternative Frequecy)を検索する機能(AFサーチ)。
(3)EON(Enhanced Other Network;拡張ネットワーク)局へのTA(Traffic Announcement;交通情報)割り込み機能。
上述した(1)~(3)等の機能は、サブチューナフロントエンド7でTMC受信局以外の放送局を受信することにより実現できる。つまり、TMCデータを受信している放送局と他の放送局を切り替えることにより、双方のタスクを両立させることが必要である。
図4は、図1中のラジオ受信機による動作の流れを示すフローチャートであり、サブチューナフロントエンド7におけるTMCデータ受信とその他のラジオタスクとの切り替え動作の流れを示している。
先ず、ラジオ制御部17が、TMCデータを含むグループタイプを送信するRDS局(以下、TMC受信局と適宜称す)にサブチューナフロントエンド7をチューニングする(ステップST1)。
図5は、サブチューナが安定してTMCデータを受信できる場合における処理を説明するための図である。なお、図5では、最小ギャップ(Gap)が3グループタイプである場合を示している。図5に示すように、前回受信されたTMCデータの内容が未知か、若しくは最新のTMCデータが前回受信したTMCデータの内容と一致するとき、適用カウンタ決定部16は、カウンタBを適用し、カウンタBがカウント目標値になるまでの間、ラジオ制御部17によってサブチューナフロントエンド7を制御し、上述した(1)~(3)等のラジオタスクを実施する。
この構成において、特にTMCデータを含むグループタイプ8A間の間隔で受信したグループタイプ数を計測し、グループタイプ数の最小値をギャップとして規定する最小ギャップ計測部13を備え、カウンタBが、RDSクロックに同期してギャップ分の間隔をカウントし、ラジオ制御部17が、カウンタBのカウント中はTMCデータの受信以外のラジオ処理を実行するよう、サブチューナフロントエンド7を制御する。
このようにFM放送局の副搬送波の分周から得られるため、周波数精度が高く、かつRDSデータに精度良く同期するRDSクロックをトリガとするカウンタでTMCデータ間の間隔をカウントすることにより、RDSクロックに同期してTMCデータを精度良く受信でき、かつTMCデータの合間を適確に特定できることから、代替局の探索などのラジオ処理を効率良く実行することができる。例えば、RDSデータと同期しないラジオ受信機1内のタイマを使用する場合と比較すると、データ受信精度の向上を図ることができる。
Claims (4)
- 放送局から放送信号を受信してラジオ音声を再生する第1の受信系統部と、前記放送信号中のRDS(Radio Data System)データを受信する第2の受信系統部とを備えた受信装置において、
前記第2の受信系統部は、
前記放送信号からRDSデータ及びこれに同期するRDSクロックを復調するRDS復調部と、
前記RDSデータにおける交通情報を含むグループタイプ間の間隔を、前記RDSクロックに同期してカウントするカウンタと、
前記交通情報を含むグループタイプを受信すると共に、前記カウンタのカウント中は前記交通情報の受信以外のラジオ処理を実行するラジオ制御部とを備えた受信装置。 - 第2の受信系統部は、交通情報を含むグループタイプ間の間隔で受信したグループタイプ数を計測し、グループタイプ数の最小値をギャップとして規定する最小ギャップ計測部を備え、
カウンタは、RDSクロックに同期して前記ギャップ分の間隔をカウントする第1のカウンタを備え、
ラジオ制御部は、前記第1のカウンタのカウント中は前記交通情報の受信以外のラジオ処理を実行することを特徴とする請求項1記載の受信装置。 - カウンタは、交通情報を含むグループタイプの受信後、同一内容の交通情報を含むグループタイプの受信をスキップして、次の新たな交通情報を含むグループタイプが受信されるまでの間隔を、RDSクロックに同期してカウントする第2のカウンタを備え、
ラジオ制御部は、前記第2のカウンタのカウント中は前記交通情報の受信以外のラジオ処理を実行することを特徴とする請求項2記載の受信装置。 - カウンタは、RDSデータが受信断となった時点から交通情報の受信待ちを行う待機間隔を、RDSクロックに同期してカウントする第3のカウンタと、前記第3のカウンタによる前記待機間隔のカウント完了時点から所定のラジオ処理用間隔を、前記RDSクロックに同期してカウントする第4のカウンタとを備え、
ラジオ制御部は、前記第3のカウンタのカウント中は前記交通情報の受信待ちを行い、前記第4のカウンタのカウント中は前記交通情報の受信以外のラジオ処理を実行することを特徴とする請求項3記載の受信装置。
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JP2010519624A JP4812899B2 (ja) | 2008-07-07 | 2009-05-11 | 受信装置 |
DE112009001277.9T DE112009001277B4 (de) | 2008-07-07 | 2009-05-11 | Empfangsvorrichtung |
CN2009801198981A CN102047569B (zh) | 2008-07-07 | 2009-05-11 | 接收装置 |
US12/988,615 US8107559B2 (en) | 2008-07-07 | 2009-05-11 | Receiving apparatus |
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JP (1) | JP4812899B2 (ja) |
CN (1) | CN102047569B (ja) |
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US20120207245A1 (en) * | 2011-02-16 | 2012-08-16 | Alpine Electronics, Inc. | Digital broadcast apparatus and digital broadcast receiving method |
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JP5794935B2 (ja) * | 2012-03-05 | 2015-10-14 | アルパイン株式会社 | 受信装置、受信方法および受信プログラム |
JP2017200100A (ja) * | 2016-04-28 | 2017-11-02 | アルパイン株式会社 | 放送受信装置および受信切替制御方法 |
CN107733544A (zh) * | 2017-11-02 | 2018-02-23 | 深圳市路畅科技股份有限公司 | 一种收音机和一种预设电台发射频率表的获取方法及装置 |
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2009
- 2009-05-11 DE DE112009001277.9T patent/DE112009001277B4/de not_active Expired - Fee Related
- 2009-05-11 JP JP2010519624A patent/JP4812899B2/ja active Active
- 2009-05-11 WO PCT/JP2009/002038 patent/WO2010004676A1/ja active Application Filing
- 2009-05-11 CN CN2009801198981A patent/CN102047569B/zh not_active Expired - Fee Related
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JPH10209988A (ja) * | 1997-01-20 | 1998-08-07 | Rohm Co Ltd | Rds復調回路 |
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Also Published As
Publication number | Publication date |
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CN102047569B (zh) | 2013-07-03 |
US20110122934A1 (en) | 2011-05-26 |
CN102047569A (zh) | 2011-05-04 |
JP4812899B2 (ja) | 2011-11-09 |
JPWO2010004676A1 (ja) | 2011-12-22 |
US8107559B2 (en) | 2012-01-31 |
DE112009001277B4 (de) | 2014-02-13 |
DE112009001277T5 (de) | 2011-04-28 |
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