WO2015177872A1 - デジタル放送受信装置およびデジタル放送受信方法 - Google Patents
デジタル放送受信装置およびデジタル放送受信方法 Download PDFInfo
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- WO2015177872A1 WO2015177872A1 PCT/JP2014/063367 JP2014063367W WO2015177872A1 WO 2015177872 A1 WO2015177872 A1 WO 2015177872A1 JP 2014063367 W JP2014063367 W JP 2014063367W WO 2015177872 A1 WO2015177872 A1 WO 2015177872A1
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- service
- digital broadcast
- information
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- reception
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- 238000000034 method Methods 0.000 title claims description 12
- 238000003384 imaging method Methods 0.000 claims description 14
- 239000000284 extract Substances 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 6
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- 238000010586 diagram Methods 0.000 description 2
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Images
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4345—Extraction or processing of SI, e.g. extracting service information from an MPEG stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4383—Accessing a communication channel
Definitions
- the present invention relates to a digital broadcast receiving apparatus and a digital broadcast receiving method, and more particularly to a digital broadcast receiving apparatus and a digital broadcast receiving method mounted on a moving body such as a vehicle.
- the digital broadcast receiving apparatus described in Patent Literature 1 stores position information when a service is received by a scanning operation.
- the service received by the current scan operation is the same physical channel as the already registered service (hereinafter, abbreviated as physical CH)
- the digital broadcast receiving apparatus receives the position where the registered service is received. And whether the difference between the position at which the service is received in the current scan operation is equal to or greater than a predetermined threshold value. If the positional difference is equal to or greater than a predetermined threshold, the digital broadcast receiving apparatus determines that the physical channel has moved to a broadcast area that provides another service, and newly receives the service received in the current scan operation. Additional registration as a service.
- program specifying information Program Specification Information
- SI Service Information
- Patent Document 1 there is a problem that the received service may not be properly registered.
- the conventional technology cannot cope with the case where PSI and SI are changed on the broadcasting station side. That is, if the received service and the registered service are in the same reception area and the same physical CH, if the PSI and SI are different from each other, the received service is It is expected that PSI and SI will be changed services. However, conventionally, the changed service is not registered.
- the present invention has been made to solve the above-described problems, and an object of the present invention is to obtain a digital broadcast receiving apparatus and a digital broadcast receiving method capable of appropriately registering received services.
- a digital broadcast receiving apparatus receives a digital broadcast, extracts a service identification information for identifying a digital broadcast service from a received signal, and determines position information of a reception location of the digital broadcast
- a location information determination unit a service information storage unit for adding the location information of the physical channel and reception location of the digital broadcast to the service identification information extracted from the received signal of the digital broadcast, and storing the information as service information;
- the reception process Service identification information of the digital broadcast service received by the And a service identification unit to update the service identification information of the service in the same physical channel stored in the broadcast storage unit.
- FIG. 3 is a flowchart showing a digital broadcast receiving method according to the first embodiment.
- FIG. 1 is a block diagram showing a configuration of a digital broadcast receiving apparatus according to Embodiment 1 of the present invention.
- a digital broadcast receiving apparatus 1 is a digital broadcast receiving apparatus that is mounted on a mobile body such as a vehicle or is used by being brought into a mobile body, and includes an antenna 2, a tuner 3, a demodulator 4, The AV decoder 5, the channel selection processing unit 6, the service identification unit 7, the location information determination unit 8, the service information storage unit 9, the location information acquisition unit 10, and the imaging information acquisition unit 11 are configured.
- the antenna 2 receives a digital broadcast broadcast from a broadcast station.
- a digital broadcast reception signal (RF signal) received by the antenna 2 is input to the tuner 3.
- the tuner 3 extracts a digital broadcast signal of a physical channel set in advance from the received signal of the digital broadcast input from the antenna 2, and satisfies the input specifications of the demodulator 4 at the next stage for this digital broadcast signal. Perform frequency conversion and signal level adjustment.
- the demodulator 4 demodulates the digital broadcast signal input from the tuner 3.
- the digital broadcast signal demodulated by the demodulator 4 is input to the AV decoder 5.
- the AV decoder 5 includes a Demux 5a and a decoder 5b.
- the Demux 5a separates the video stream, the audio stream, and the data stream from the digital broadcast signal demodulated by the demodulator 4.
- the decoder 5b decodes various streams separated by the Demux 5a. Thereby, video data, audio data, and digital data are obtained.
- the AV decoder 5 extracts PSI and SI from the digital data.
- PSI and SI are service identification information for identifying a digital broadcast service.
- the PSI and SI include a service ID (service_id), a network ID (network_id), an original network ID (original_network_id), a transport stream ID (TS_ID), a transport stream name (TS name), and a service name (service name).
- the service identification signal is included. Therefore, the service can be identified using the service identification signal appropriately extracted from the PSI and SI.
- the PSI and SI include a language code, a country code, and a region code.
- a language code for example, there is ISO_639_language_code as the language code, and country_code as the country code.
- country_code as the country code.
- the area code include primary_region_code, secondary_region_code, and tertiary_region_code.
- Service identification information for identifying a digital broadcast service is extracted from the received signal by a series of processes by the antenna 2, the tuner 3, the demodulator 4 and the AV decoder 5. That is, the antenna 2, the tuner 3, the demodulator 4 and the AV decoder 5 function as a reception processor in the present invention.
- the channel selection processing unit 6 sets a channel to be selected in the tuner 3 in accordance with a channel selection instruction from a user using an operation unit (not shown) or a channel selection instruction from the CPU.
- the channel selection processing unit 6 instructs the demodulation unit 4 to demodulate only the signal of the physical channel to be selected from the digital broadcast signal extracted by the tuner 3. Further, the channel selection processing unit 6 instructs the AV decoder 5 to decode only the signal of the physical channel to be selected from the digital broadcast signal demodulated by the demodulation unit 4. Further, the channel selection processing unit 6 also sends a channel to be selected to the service identification unit 7.
- the service identification unit 7 is based on the physical CH input from the channel selection processing unit 6, the PSI and SI extracted by the AV decoder 5 from the signal of the physical CH, and the location information determined by the location information determination unit 8.
- the digital broadcast service received on the physical CH is identified. For example, whether the digital broadcast service received on the physical CH is a service that has already been registered with the service information stored in the service information storage unit 9, or conversely, the service information is not stored and is not registered. A service is identified. Then, the service identification unit 7 updates and adds service information in the service information storage unit 9 according to the identification result. For example, if the digital broadcast service is not registered, the PSI and SI of this service are added to the service information storage unit 9 in association with the physical CH and the location information of the reception location.
- the service identification unit 7 determines that the physical channel is the same between the service received this time and the service registered in the service information storage unit 9 and the reception location is within the same reception area. If only PSI and SI are different from each other, it is determined that the PSI and SI of the service received this time have been changed on the broadcast station side. In this case, the service identification unit 7 updates the service information of the same physical CH stored in the service information storage unit 9 using the PSI and SI of the service received this time. Conventionally, a service whose PSI and SI have been changed is not identified on the broadcasting station side, and the service after the change cannot be registered. However, in the present invention, the service identification unit 7 can appropriately register the service. It is.
- the location information discriminating unit 8 discriminates the location information of the place where the digital broadcast is received by the reception processing unit. For example, the determination may be performed using any combination of a language code, a country code, a region code, and a network ID extracted from PSI and SI as position information. By doing in this way, the means for specifying position information becomes unnecessary and it can be set as a simple structure.
- the service information storage unit 9 adds the physical CH and location information of the service reception location to the PSI and SI, and stores the information as service information. For example, as shown in FIG. 2, the service information storage unit 9 stores PSI, SI, physical CH, and location information for each service.
- the service information stored in the service information storage unit 9 is used as a channel list or a preset list that is a list of receivable services.
- the position information acquisition unit 10 acquires measurement information of the current position.
- the current position information (latitude and longitude) is acquired by connecting to a GPS (Global Positioning System) receiver (not shown).
- the GPS receiver receives GPS radio waves from GPS satellites, analyzes the received signal, and measures current position information (latitude and longitude).
- the position information of the vehicle may be acquired from a self-contained navigation device such as a distance sensor, a direction sensor, and a steering angle sensor mounted on the vehicle.
- the position information determination unit 8 performs determination using the measurement information of the current position acquired by the position information acquisition unit 10 as position information. As a result, the position information determination unit 8 can accurately determine the position of the service reception location, and the reliability of determination of the reception area by the service identification unit 7 is also improved.
- the imaging information acquisition unit 11 acquires image information obtained by imaging the periphery of the vehicle on which the digital broadcast receiving device 1 is mounted or brought in.
- an in-vehicle camera a front camera, a rear camera, and a side camera
- the position information determination unit 8 performs determination using the image information acquired by the imaging information acquisition unit 11 as position information. For example, signs and specific buildings around the vehicle are extracted by image analysis, and the current position of the vehicle is determined based on these. Even in this way, it is possible to specify the current position.
- the location information discriminating unit 8 is a combination of any of the language code, country code, region code and network ID extracted from the PSI and SI, presence / absence of registration in the service information storage unit 9 of any representative service, and location information acquisition
- the position information of the reception location of the digital broadcast may be determined by combining any of the measurement information of the current position acquired by the unit 10 and the captured image of the vehicle periphery acquired by the imaging information acquisition unit 11. For example, a rough position is determined based on data extracted from PSI and SI, and then a more accurate position is determined based on measurement information of the current position acquired by the position information acquisition unit 10. At this time, the analysis result of the image acquired by the imaging information acquisition unit 11 may be supplementarily used.
- FIG. 3 is a flowchart showing the digital broadcast receiving method according to the first embodiment, and shows a process of registering the received service in the service information storage unit 9.
- the channel selection processing unit 6 causes the tuner 3, the demodulation unit 4, and the AV decoder 5 to select a physical channel to be selected in response to a channel selection instruction from a user using an operation unit (not shown) or a channel selection instruction from the CPU.
- the channel selection process for receiving the digital broadcast is performed (step ST1).
- the service identification unit 7 acquires the PSI and SI of the service of the physical CH extracted from the digital data by the AV decoder 5 and the physical CH from the channel selection processing unit 6 (step ST2). At this time, if the AV decoder 5 cannot extract the PSI and SI and the PSI and SI of the service of the channel to be selected are not acquired (step ST3; NO), the service identification unit 7 receives the service. It is determined that it is impossible, and the process ends. At this time, nothing is registered in the service information storage unit 9.
- the service identifying unit 7 receives the PSI, SI, and physical CH of the service registered in the service information storage unit 9 in step ST1.
- the PSI, SI, and physical CH of the digital broadcasting service that has been received are compared to determine whether they are the same (step ST4).
- the service identification unit 7 determines that the service received in step ST1 is already registered in the service information storage unit 9, and performs processing. Exit.
- the service identification unit 7 acquires the location information of the service reception location in step ST1 from the location information determination unit 8. (Step ST5). Next, the service identification unit 7 compares the PSI and SI of the service received in step ST1 with the PSI and SI of the service registered in the service information storage unit 9, and confirms whether or not they are the same. (Step ST6).
- the service identification unit 7 receives the location information of the location where the digital broadcast of the service was received in step ST1 and the location information of the service registered in the service information storage unit 9 To determine whether or not both pieces of position information are within the same reception area (step ST7).
- the service identification unit 7 includes the digital broadcast service received in step ST1 and the service registered in the service information storage unit 9.
- the PSI and SI are the same and the reception location is in the same reception area, only the physical CH is different from each other, so it is determined that frequency repacking has been performed on the broadcast station side.
- the service identification unit 7 updates the physical channel of the service registered in the service information storage unit 9 using the physical channel of the digital broadcast service received in step ST1 (step ST8).
- the service identification unit 7 uses the SDTT acquired from the digital data by the AV decoder 5 and the engineering service. Using the frequency list and the change information, execution of frequency repacking may be determined in step ST8.
- the service identification unit 7 determines that a digital broadcast from an MFN (Multi Frequency Network) station has been received due to the movement of the vehicle. To do. That is, since services with the same PSI and SI are broadcast on different physical CHs, the service identification unit 7 uses the physical CH of the service received in step ST1 for the services registered in the service information storage unit 9. It adds to physical CH (step ST9).
- MFN Multi Frequency Network
- step ST6 when it is determined that PSI and SI are different from each other (step ST6; NO), the service identification unit 7 has the same physical CH for the service received in step ST1 and the service registered in the service information storage unit 9. It is determined whether or not there is (step ST10). If the physical CHs are different from each other (step ST10; NO), the service identification unit 7 determines that a new service not registered in the service information storage unit 9 has been received. In this case, the service identification unit 7 proceeds to step ST9 and registers the service received in step ST1 in the service information storage unit 9.
- the service identification unit 7 stores the location information of the location where the digital broadcast of the service was received in step ST1 and the service registered in the service information storage unit 9. The position information is compared with each other to determine whether or not both pieces of position information are in the same reception area (step ST11). At this time, when it is determined that the two pieces of position information are not within the same reception area (step ST11; NO), the service identification unit 7 receives a new service that is not registered in the service information storage unit 9 as described above. to decide. Also in this case, the service identification unit 7 moves to step ST9 and registers the service received in step ST1 in the service information storage unit 9.
- the service identification unit 7 When it is determined that both pieces of position information are within the same reception area (step ST11; YES), the service identification unit 7 includes the digital broadcast service received in step ST1 and the service registered in the service information storage unit 9. However, it is determined that the PSI and SI of the service received in step ST1 have been changed on the broadcasting station side because only the PSI and SI are different from each other. . In this case, the service identification unit 7 updates the PSI and SI in the service information of the same physical CH stored in the service information storage unit 9, using the PSI and SI of the digital broadcast service received in step ST1. (Step ST12).
- the service detected during the channel selection operation such as scanning is within the same reception area with the same physical CH and location information as the service registered in the service information storage unit 9, but the PSI and SI are mutually different. Even if they are different, the latest service information can always be held by updating the registered service information. As a result, the optimum service list information can be provided to the user.
- the reception processing unit receives the digital broadcast and identifies the digital broadcast service.
- Service identification information is extracted from the received signal.
- the position information discriminating unit 8 discriminates the position information of the digital broadcast receiving location.
- the service information storage unit 9 adds the physical channel of the digital broadcast and the location information of the reception location to the PSI and SI extracted from the received signal of the digital broadcast and stores them as service information.
- the service identification unit 7 has the reception location of the digital broadcast service received by the reception processing unit and the service of the same physical CH stored in the service information storage unit 9 within the same reception area.
- the PSI and SI of the service of the same physical CH stored in the service information storage unit 9 are updated using the PSI and SI of the digital broadcast service received by the reception processing unit.
- the PSI and SI related to the service of the same physical CH in the same broadcast area as the registered service are changed on the broadcast station side, the service after the change is not to be scanned and newly registered. I could not.
- the PSI and SI related to the service of the same physical CH in the same broadcast area as the registered service are different, the corresponding service registered with the PSI and SI of the newly received service. PSI and SI are updated.
- services that could not be registered in the prior art can be appropriately registered, and the latest service information can always be held. For this reason, it is possible to provide the list information of the optimum service to the user.
- the service identification information is a combination of any of service ID, network ID, original network ID, transport stream ID, transport stream name, and service name.
- service identification signals are included in PSI and SI, and services can be identified using service identification signals appropriately extracted from PSI and SI.
- the position information acquisition unit 10 that acquires the GPS information of the current position
- the position information determination unit 8 uses the GPS information of the current position acquired by the position information acquisition unit 10 as the position information. Is used for discrimination.
- the position information determination unit 8 can accurately determine the service reception location based on the current position. Thereby, the reliability of the discrimination of the reception area by the service identification unit 7 is also improved.
- the imaging information acquisition unit 11 that acquires image information obtained by imaging the periphery of the vehicle on which the digital broadcast receiving apparatus 1 is mounted or brought in is provided, and the position information determination unit 8 includes the imaging information. The determination is performed using the image information acquired by the acquisition unit 11 as position information. In this way, the current position can be specified, and the reception location of the service can be determined.
- the service identification information includes a language code, a country code, a region code, and a network ID
- the position information determination unit 8 includes a language code, a country code, a region code, and a network ID, arbitrary A determination is made using any combination of presence / absence of registration in the service information storage unit 9 of the representative service as position information.
- any component of the embodiment can be modified or any component of the embodiment can be omitted within the scope of the invention.
- the digital broadcast receiving apparatus can appropriately register the received service, for example, it is suitable for an in-vehicle digital broadcast receiving apparatus that can move to various receiving areas by moving the vehicle.
- 1 digital broadcast receiver 2 antenna, 3 tuner, 4 demodulator, 5 AV decoder, 5a Demux, 5b decoder, 6 channel selection processor, 7 service identification unit, 8 location information determination unit, 9 service information storage unit, 10 Position information acquisition unit, 11 Imaging information acquisition unit.
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Abstract
Description
そして、今回のスキャン動作で受信されたサービスが既に登録済みのサービスと同一の物理チャンネル(以下、物理CHと略す)である場合、上記デジタル放送受信装置は、登録済みのサービスが受信された位置と今回のスキャン動作でサービスが受信された位置との差が予め定められた閾値以上であるかどうかを確認する。
位置差が予め定められた閾値以上である場合、上記デジタル放送受信装置は、この物理CHで別のサービスを提供する放送エリアに移動したと判断し、今回のスキャン動作で受信されたサービスを新たなサービスとして追加登録する。
ここでは、サービスを識別するために用いられる番組特定情報(Program Specification Information;以下、PSIと略す)および番組配列情報(Service Information;以下、SIと略す)が登録される。
特に、従来の技術では、放送局側でPSIおよびSIが変更された場合に対応することができない。すなわち、受信されたサービスと登録済みのサービスとで受信場所が同一の受信エリアで、かつ同一の物理CHであっても、PSIおよびSIが互いに異なる場合、受信されたサービスは、放送局側でPSIおよびSIが変更されたサービスであることが予想される。しかしながら、従来では、この変更後のサービスが登録対象にならない。
実施の形態1.
図1は、この発明の実施の形態1に係るデジタル放送受信装置の構成を示すブロック図である。図1において、デジタル放送受信装置1は、車両などの移動体に搭載されるか、あるいは、移動体に持ち込まれて使用されるデジタル放送受信装置であり、アンテナ2、チューナ3、復調部4、AVデコーダ5、選局処理部6、サービス識別部7、位置情報判別部8、サービス情報記憶部9、位置情報取得部10および撮像情報取得部11を備えて構成される。
チューナ3は、アンテナ2から入力されたデジタル放送の受信信号から予め設定された物理CHのデジタル放送信号を抽出し、このデジタル放送信号に対して次段の復調部4の入力仕様を満たすように周波数変換および信号レベルの調整を行う。
AVデコーダ5は、Demux5aおよびデコーダ5bを備える。Demux5aは、復調部4で復調されたデジタル放送信号から、映像ストリーム、音声ストリーム、およびデータストリームを分離する。デコーダ5bは、Demux5aにより分離された各種のストリームをデコードする。これにより、映像データ、音声データおよびデジタルデータが得られる。
なお、PSIおよびSIには、サービスID(service_id)、ネットワークID(network_id)、オリジナルネットワークID(original_network_id)、トランスポートストリームID(TS_ID)、トランスポートストリーム名(TS名)およびサービス名(service名)といったサービス識別信号が含まれる。従って、PSIおよびSIから適宜抽出したサービス識別信号を用いて、サービスの識別が可能である。
例えば、言語コードとしては、ISO_639_language_codeがあり、国コードには、country_codeがある。また、地域コードとしては、例えば、primary_region_codeや、secondary_region_code、tertiary_region_codeがある。
例えば、上記物理CHで受信されたデジタル放送のサービスが、サービス情報記憶部9にサービス情報が記憶されて既に登録されたサービスであるのか、反対にサービス情報が記憶されておらず、未登録のサービスであるのかが識別される。
そして、サービス識別部7は、識別結果に応じてサービス情報記憶部9のサービス情報の更新および追加を行う。例えば、デジタル放送のサービスが未登録であれば、このサービスのPSIおよびSIを、物理CHおよび受信場所の位置情報に対応付けてサービス情報記憶部9に追加する。
この場合、サービス識別部7は、今回受信されたサービスのPSIおよびSIを用いてサービス情報記憶部9に記憶されている同一の物理CHのサービス情報を更新する。
従来では、放送局側でPSIおよびSIが変更されたサービスが識別されず、変更後のサービスを登録することができなかったが、本発明では、サービス識別部7によって適切に登録することが可能である。
また、車両に搭載された距離センサ、方位センサおよび舵角センサなどの自立航法装置から車両の位置情報を取得してもよい。
位置情報判別部8は、位置情報取得部10が取得した現在位置の計測情報を位置情報として用いて判別を行う。これにより、位置情報判別部8は、サービスの受信場所の位置を正確に判別でき、サービス識別部7による受信エリアの判定の信頼性も向上する。
図3は、実施の形態1に係るデジタル放送受信方法を示すフローチャートであり、受信されたサービスをサービス情報記憶部9に登録する処理を示している。
まず、選局処理部6が、図示しない操作部を用いたユーザからの選局指示またはCPUからの選局指示に応じて、チューナ3、復調部4およびAVデコーダ5に選局対象の物理CHのデジタル放送を受信させる選局処理を実施する(ステップST1)。
PSI、SIおよび物理CHが同一である場合(ステップST4;YES)、サービス識別部7は、ステップST1で受信されたサービスが、サービス情報記憶部9に既に登録されているものと判断して処理を終了する。
次に、サービス識別部7は、ステップST1で受信されたサービスのPSIおよびSIと、サービス情報記憶部9に登録済みのサービスのPSIおよびSIとを比較して、同一であるか否かを確認する(ステップST6)。
両位置情報が同一の受信エリア内であると判定した場合(ステップST7;YES)、サービス識別部7は、ステップST1で受信されたデジタル放送のサービスとサービス情報記憶部9に登録済みのサービスとでPSIおよびSIが同一で、受信場所も同一の受信エリア内であるが、物理CHのみが互いに異なるため、放送局側で周波数リパッキングが実施されたと判断する。すなわち、サービス情報記憶部9に登録済みのサービスは、その物理CHが放送局側で変更されている。そこで、サービス識別部7は、ステップST1で受信されたデジタル放送のサービスの物理CHを用いて、サービス情報記憶部9に登録済みのサービスの物理CHを更新する(ステップST8)。
すなわち、PSIおよびSIが同一のサービスが、異なる物理CHでも放送されているので、サービス識別部7は、ステップST1で受信されたサービスの物理CHを、サービス情報記憶部9に登録済みのサービスの物理CHに追加する(ステップST9)。
サービス識別部7は、物理CHが互いに異なる場合(ステップST10;NO)、サービス情報記憶部9に登録されていない新しいサービスを受信したと判断する。
この場合、サービス識別部7は、ステップST9に移行して、ステップST1で受信されたサービスをサービス情報記憶部9に登録する。
このとき、両位置情報が同一の受信エリア内でないと判定した場合(ステップST11;NO)、サービス識別部7は、上記と同様にサービス情報記憶部9に登録されていない新しいサービスを受信したと判断する。この場合も、サービス識別部7は、ステップST9に移行して、ステップST1で受信されたサービスをサービス情報記憶部9に登録する。
この場合、サービス識別部7は、ステップST1で受信されたデジタル放送のサービスのPSIおよびSIを用いて、サービス情報記憶部9に記憶されている同一の物理CHのサービス情報におけるPSIおよびSIを更新する(ステップST12)。
このようにスキャンなどの選局動作時に検出されたサービスが、サービス情報記憶部9に登録済みのサービスと同一の物理CHでかつ位置情報が同一の受信エリア内であるが、PSIおよびSIが互いに異なる場合であっても、登録済みサービス情報を更新することで、常に最新のサービス情報を保持することができる。これによりユーザに対して最適なサービス一覧情報を提供できる。
サービス識別部7は、受信処理部によって受信されたデジタル放送のサービスとサービス情報記憶部9に記憶されている同一の物理CHのサービスとの受信場所が同一の受信エリア内にあるが、PSIおよびSIが互いに異なる場合、受信処理部によって受信されたデジタル放送のサービスのPSIおよびSIを用いて、サービス情報記憶部9に記憶されている同一の物理CHのサービスのPSIおよびSIを更新する。
従来は、登録済みのサービスと同一の放送エリアで同一の物理CHのサービスに関するPSIおよびSIが放送局側で変更された場合、この変更後のサービスがスキャン対象にならず、新たに登録することができなかった。
これに対して、本発明では、登録済みのサービスと同一の放送エリアで同一の物理CHのサービスに関するPSIおよびSIが異なる場合、新たに受信されたサービスのPSIおよびSIで登録済みの対応するサービスのPSIおよびSIが更新される。
これにより従来では登録できなかったサービスも適切に登録することができ、常に最新のサービス情報を保持することができる。このためユーザに最適なサービスの一覧情報を提供することが可能となる。
このようにすることでも、現在位置の特定が可能であり、サービスの受信場所の判別も可能である。
Claims (6)
- デジタル放送を受信して、前記デジタル放送のサービスを識別するためのサービス識別情報を受信信号から抽出する受信処理部と、
前記デジタル放送の受信場所の位置情報を判別する位置情報判別部と、
前記デジタル放送の受信信号から抽出されたサービス識別情報に、このデジタル放送の物理チャンネルおよび前記受信場所の位置情報を付加して、サービス情報として記憶するサービス情報記憶部と、
前記受信処理部によって受信されたデジタル放送のサービスと前記サービス情報記憶部に記憶されている同一の物理チャンネルのサービスとの受信場所が同一の受信エリア内にあるが、サービス識別情報が互いに異なる場合、前記受信処理部によって受信された前記デジタル放送のサービスのサービス識別情報を用いて、前記サービス情報記憶部に記憶されている前記同一の物理チャンネルのサービスのサービス識別情報を更新するサービス識別部とを備えるデジタル放送受信装置。 - 前記サービス識別情報は、サービスID、ネットワークID、オリジナルネットワークID、トランスポートストリームID、トランスポートストリーム名およびサービス名のいずれかの組み合わせであることを特徴とする請求項1記載のデジタル放送受信装置。
- 現在位置の計測情報を取得する位置情報取得部を備え、
前記位置情報判別部は、前記位置情報取得部が取得した現在位置の計測情報を位置情報として用いて判別を行うことを特徴とする請求項1記載のデジタル放送受信装置。 - 前記デジタル放送受信装置が搭載または持ち込まれた移動体の周辺を撮像した画像情報を取得する撮像情報取得部を備え、
前記位置情報判別部は、前記撮像情報取得部が取得した前記画像情報を位置情報として用いて判別を行うことを特徴とする請求項1記載のデジタル放送受信装置。 - 前記サービス識別情報は、言語コード、国コード、地域コードおよびネットワークIDを含み、
前記位置情報判別部は、前記言語コード、前記国コード、前記地域コードおよび前記ネットワークID、任意の代表サービスの前記サービス情報記憶部への登録有無のいずれかの組み合わせを位置情報として用いて判別を行うことを特徴とする請求項1記載のデジタル放送受信装置。 - 受信処理部が、デジタル放送を受信して、前記デジタル放送のサービスを識別するためのサービス識別情報を受信信号から抽出し、
位置情報判別部が、前記デジタル放送の受信場所の位置情報を判別し、
サービス情報記憶部が、前記デジタル放送の受信信号から抽出されたサービス識別情報に、このデジタル放送の物理チャンネルおよび前記受信場所の位置情報を付加して、サービス情報として記憶し、
サービス識別部が、受信処理部によって受信されたデジタル放送のサービスと前記サービス情報記憶部に記憶されている同一の物理チャンネルのサービスとの受信場所が同一の受信エリア内にあるが、サービス識別情報が互いに異なる場合、前記受信処理部によって受信された前記デジタル放送のサービスのサービス識別情報を用いて、前記サービス情報記憶部に記憶されている前記同一の物理チャンネルのサービスのサービス識別情報を更新するデジタル放送受信方法。
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2006060303A (ja) * | 2004-08-17 | 2006-03-02 | Maruyasu Industries Co Ltd | デジタル放送受信機 |
WO2006041039A1 (ja) * | 2004-10-08 | 2006-04-20 | Matsushita Electric Industrial Co., Ltd. | 放送受信装置 |
JP2009111764A (ja) * | 2007-10-30 | 2009-05-21 | Kyocera Corp | デジタル放送認証システム、およびこれに用いるデジタル放送受信端末、並びに認証サーバ |
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WO2006041039A1 (ja) * | 2004-10-08 | 2006-04-20 | Matsushita Electric Industrial Co., Ltd. | 放送受信装置 |
JP2009111764A (ja) * | 2007-10-30 | 2009-05-21 | Kyocera Corp | デジタル放送認証システム、およびこれに用いるデジタル放送受信端末、並びに認証サーバ |
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