JP2007228061A - Unit and method for ts processing - Google Patents

Unit and method for ts processing Download PDF

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JP2007228061A
JP2007228061A JP2006044082A JP2006044082A JP2007228061A JP 2007228061 A JP2007228061 A JP 2007228061A JP 2006044082 A JP2006044082 A JP 2006044082A JP 2006044082 A JP2006044082 A JP 2006044082A JP 2007228061 A JP2007228061 A JP 2007228061A
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npt
value
stc
station
receiving station
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JP4703431B2 (en
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Yuichiro Hanabusa
雄一郎 花房
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Toshiba Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a TS processing unit capable of fitting time information in a TS to time information managed in a receiving station, without having to reconfigure, in the receiving station, the TS transmitted from an originating station. <P>SOLUTION: When a transmission unit does not exist in a receiving station 20, using an originating PCR value included in an originating TS from an originating station 10, a differential calculator 24 generates a correction signal for correcting a reference STC value of an originating NPT reference message included in the originating TS, from the difference between the above originating PCR value and the receiving the PCR value managed in the receiving station 20. According to the correction signal, an NPT correction section 25 corrects the reference STC value of the original NPT reference message to the reference STC value of the receiving station 20. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

この発明は、例えばネット送り局及びネット受け局を中継回線により結ぶネット受信放送システムのネット受け局に用いられ、ネット送り局から送られるＴＳ(Transport Stream)を処理するＴＳ処理装置及びＴＳ処理方法に関する。   The present invention is a TS processing apparatus and a TS processing method for processing a TS (Transport Stream) sent from a net sending station, for example, used in a net receiving station of a net reception broadcasting system in which a net sending station and a net receiving station are connected by a relay line. About.

地上波の放送システムにあっては、ネット送り局となる発局及びネット受け局となる受局を中継回線により結ぶネット受信放送システムが構築されている。この受局では、中継回線で受信した放送信号を特定の放送サービスエリアに向けて再度送信している。このとき、発局から受局へＴＳを送出し、受局でＴＳを生成して送出する運用が行なわれることとなっている。しかしながら、この運用では、各受局において発局から送られるＴＳの時間情報を受局で管理している時間情報に付け替えるべくＴＳを再構成するための高価な汎用サーバを用いる必要があり、設備拡張の面で多大なコストがかかる。   In the terrestrial broadcasting system, a net reception broadcasting system is established in which a transmitting station serving as a net sending station and a receiving station serving as a net receiving station are connected by a relay line. In this receiving station, the broadcast signal received through the relay line is transmitted again toward a specific broadcast service area. At this time, the TS is transmitted from the originating station to the receiving station, and the receiving station generates and sends the TS. However, in this operation, it is necessary to use an expensive general-purpose server for reconfiguring the TS to replace the time information of the TS transmitted from the originating station at each receiving station with the time information managed by the receiving station. It costs a lot in terms of expansion.

なお、従来では、発局から送られる放送ＴＳ及びデータ放送ＴＳを受局に送出し、受局にてＴＳの再構成を行うことなく、放送ＴＳの時間情報とデータ放送ＴＳの時間情報とを合わせる手法が提案されている（例えば、特許文献１）。
特開２００３−１８９１２１号公報。 Conventionally, the broadcast TS and the data broadcast TS sent from the originating station are sent to the receiving station, and the time information of the broadcasting TS and the time information of the data broadcasting TS are obtained without reconfiguring the TS at the receiving station. A method of matching is proposed (for example, Patent Document 1).
JP2003-189121A.

ところで、従来の手法では、発局から送られる放送ＴＳの時間情報とデータ放送ＴＳの時間情報とを受局にて合わせるものであり、例えば発局から送られる放送ＴＳの時間情報を受局で管理している時間情報に合わせるものではない。   By the way, in the conventional method, the time information of the broadcast TS sent from the originating station and the time information of the data broadcast TS are matched at the receiving station. For example, the time information of the broadcasting TS sent from the originating station is matched at the receiving station. It does not match the time information being managed.

そこで、この発明の目的は、受局にて発局から送られるＴＳの再構成を行なうことなく、ＴＳ内の時間情報を受局で管理している時間情報に合わせ得るＴＳ処理装置及びＴＳ処理方法を提供することにある。   SUMMARY OF THE INVENTION An object of the present invention is to provide a TS processing device and a TS process that can match time information in a TS with time information managed by the receiving station without reconfiguring the TS sent from the calling station at the receiving station. It is to provide a method.

この発明は、上記目的を達成するために、以下のように構成される。
ネット送り局から送られ、サービスごとに時間情報としてのＳＴＣ（System Time Clock）及びＮＰＴ(Normal Play Time)、ＳＴＣ及びＮＰＴの関係を示すＮＰＴ参照メッセージ及びネット送り局の時間情報を示す第１のＰＣＲ（Program Clock Reference）値を含むＴＳ(Transport Stream)を受信するネット受け局に用いられるＴＳ処理装置において、ネット受け局の時間情報を示す第２のＰＣＲ値を発生する発生手段と、ネット送り局からのＴＳを受信して第１のＰＣＲ値を抽出する抽出手段と、第１のＰＣＲ値と第２のＰＣＲ値との差分を求める演算手段と、この演算手段で求められた差分データに基づいて、ＴＳに含まれるＮＰＴ参照メッセージ内のＳＴＣを基準とする基準ＳＴＣ値をサービスごとに補正する補正手段とを備えるようにしたものである。 In order to achieve the above object, the present invention is configured as follows.
First time indicating STC (System Time Clock) and NPT (Normal Play Time) as time information for each service, NPT reference message indicating the relationship between STC and NPT, and time information of the net transmitting station. In a TS processing apparatus used in a network receiving station that receives a TS (Transport Stream) including a PCR (Program Clock Reference) value, generating means for generating a second PCR value indicating time information of the network receiving station, Extracting means for receiving the TS from the station and extracting the first PCR value; computing means for obtaining a difference between the first PCR value and the second PCR value; and difference data obtained by the computing means Based on this, a correction means for correcting the standard STC value based on the STC in the NPT reference message included in the TS for each service is provided.

この構成によれば、ネット受け局に送出装置が存在しない場合に、ネット送り局からのＴＳに含まれているＰＣＲ値を利用して、このＰＣＲ値とネット受け局で管理しているＰＣＲ値との差分からＴＳに含まれるＮＰＴ参照メッセージの基準ＳＴＣ値を補正するための補正信号を作成しているので、ＴＳの再構成を行なうためのサーバを用いることなく、ネット送り局のＴＳの基準ＳＴＣ値をネット受け局の基準ＳＴＣ値に合わせることができる。   According to this configuration, when there is no transmission device in the network receiving station, this PCR value and the PCR value managed by the network receiving station are used by using the PCR value included in the TS from the network transmitting station. Since the correction signal for correcting the standard STC value of the NPT reference message included in the TS is created from the difference between the TS and the TS, the TS standard of the net sending station is used without using a server for reconfiguring the TS. The STC value can be matched with the reference STC value of the network receiving station.

ネット送り局から送られ、サービスごとに時間情報としてのＳＴＣ（System Time Clock）及びＮＰＴ(Normal Play Time)、ＳＴＣ及びＮＰＴの関係を示すＮＰＴ参照メッセージ及びＮＰＴ発火型イベントメッセージを含む発局ＴＳ(Transport Stream)を受信し、受局ＴＳを送出するネット受け局に用いられるＴＳ処理装置において、ネット送り局から送られた発局ＴＳ内のＮＰＴを基準とする基準ＮＰＴ値とＳＴＣを基準とする基準ＳＴＣ値との差分を求める第１の演算手段と、受局ＴＳ内のＮＰＴを基準とする基準ＮＰＴ値とＳＴＣを基準とする基準ＳＴＣ値との差分を求める第２の演算手段と、ＮＰＴ発火型イベントメッセージの受信時における発局ＴＳ内のＳＴＣ値に第１の演算手段で求められた差分データを加算することで、第１の基準ＮＰＴ値を求める第３の演算手段と、ＮＰＴ発火型イベントメッセージの受信時における受局ＴＳ内のＳＴＣ値に第２の演算手段で求められた差分データを加算することで、第２の基準ＮＰＴ値を求める第４の演算手段と、第１の基準ＮＰＴ値と第２の基準ＮＰＴ値との差分を求める第５の演算手段と、この第５の演算手段で得られた差分データに基づいて、ＮＰＴ発火型イベントメッセージの発火時刻を補正する補正手段とを備えるようにしたものである。   An originating station TS (STEP (System Time Clock) and NPT (Normal Play Time) as time information for each service and including an NPT reference message and an NPT firing type event message indicating the relationship between STC and NPT. In a TS processing apparatus used in a network receiving station that receives (Transport Stream) and transmits a receiving station TS, a reference NPT value based on the NPT in the originating station TS sent from the net sending station and an STC are used as a reference. A first computing means for obtaining a difference from a reference STC value; a second computing means for obtaining a difference between a reference NPT value based on the NPT in the receiving station TS and a reference STC value based on the STC; The first reference NPT value is obtained by adding the difference data obtained by the first computing means to the STC value in the originating station TS at the time of receiving the ignition type event message. The second reference NPT value is obtained by adding the difference data obtained by the second computing means to the STC value in the receiving station TS at the time of reception of the NPT firing type event message. On the basis of the fourth calculation means, the fifth calculation means for obtaining the difference between the first reference NPT value and the second reference NPT value, and the difference data obtained by the fifth calculation means, NPT ignition And a correction means for correcting the firing time of the type event message.

この構成によれば、ネット受け局に受局ＴＳを送出する送出装置がある場合に、発局ＴＳに含まれる基準ＳＴＣ値、基準ＮＰＴ値及びＮＰＴ発火型イベントメッセージの受信時におけるＳＴＣ値と、受局ＴＳに含まれる基準ＳＴＣ値、基準ＮＰＴ値及びＮＰＴ発火型イベントメッセージの受信時におけるＳＴＣ値とを利用して、ネット送り局から送出されるＮＰＴ発火型イベントメッセージの発火時刻を補正するための補正信号を作成しているので、例えばネット送り局から送られるＣＭデータをネット受け局のＣＭデータに差し替えて送出するような場合でも、ＴＳの再構成を行なうためのサーバを用いることなく、ＮＰＴ発火型イベントメッセージの発火時刻をネット受け局で管理している時刻に補正することができる。   According to this configuration, when there is a sending device that sends the receiving station TS to the net receiving station, the reference STC value, the reference NPT value, and the STC value at the time of receiving the NPT firing type event message included in the calling station TS, In order to correct the firing time of the NPT firing type event message transmitted from the net sending station using the reference STC value, the reference NPT value and the STC value at the time of receiving the NPT firing type event message included in the receiving station TS For example, even when the CM data sent from the net sending station is replaced with the CM data of the net receiving station and sent out without using a server for reconfiguring the TS, The firing time of the NPT firing type event message can be corrected to the time managed by the network receiving station.

以上詳述したようにこの発明によれば、受局にて発局から送られるＴＳの再構成を行なうことなく、ＴＳ内の時間情報を受局で管理している時間情報に合わせ得るＴＳ処理装置及びＴＳ処理方法を提供することができる。   As described above in detail, according to the present invention, the TS processing that can match the time information in the TS with the time information managed in the receiving station without reconfiguring the TS sent from the originating station in the receiving station. An apparatus and a TS processing method can be provided.

以下、この発明の実施形態について図面を参照して詳細に説明する。
図１は、この発明のＴＳ処理装置が適用されるネット受信放送の概略構成図である。
図１において、符号１０はネット送り局としての発局、符号２０はネット受け局としての受局を示している。発局１０は、ＴＳをアンテナ１１から自局が属する放送サービスエリアに向けて送出する。また、発局１０には、放送中継ネットワークＮＷを介して受局２０が接続される。受局２０は、発局１０から放送中継ネットワークＮＷを介して伝送されたＴＳと自局のＴＳとを切り替えて、このＴＳをアンテナ２０１から自局が属する放送サービスエリアに向けて送出する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic configuration diagram of a network reception broadcast to which the TS processing apparatus of the present invention is applied.
In FIG. 1, reference numeral 10 indicates an originating station as a net sending station, and reference numeral 20 indicates a receiving station as a net receiving station. The originating station 10 sends the TS from the antenna 11 toward the broadcast service area to which the own station belongs. The receiving station 20 is connected to the originating station 10 via the broadcast relay network NW. The receiving station 20 switches between the TS transmitted from the originating station 10 via the broadcast relay network NW and its own TS, and transmits this TS from the antenna 201 toward the broadcast service area to which the own station belongs.

（第１の実施形態）
図２は、この発明の第１の実施形態として上記受局２０内に用いられるＴＳ処理装置の構成を示すブロック図である。ここでは、受局２０に送出装置を備えていない場合について説明する。
図２において、受局ＰＣＲ抽出器２１は、受局で発生されるＴＳ（以下、受局ＴＳ）を受信し、電圧制御型水晶発振器（ＶＣＸＯ）２２から発振される発振周波数に同期したシステムの時間情報としての受局ＰＣＲを抽出する。 (First embodiment)
FIG. 2 is a block diagram showing a configuration of a TS processing apparatus used in the receiving station 20 as the first embodiment of the present invention. Here, a case where the receiving station 20 is not provided with a transmission device will be described.
In FIG. 2, a receiving station PCR extractor 21 receives a TS generated at a receiving station (hereinafter referred to as receiving station TS) and is synchronized with an oscillation frequency oscillated from a voltage controlled crystal oscillator (VCXO) 22. The receiving station PCR as time information is extracted.

発局ＰＣＲ抽出器２３は、発局１０から送出されるＴＳ（以下、発局ＴＳ）を受信し、予め設定された制御情報（例えば指定ＰＩＤ（パケット識別子）等）により指定ＰＩＤの発局ＰＣＲを抽出する。   The originating PCR extractor 23 receives the TS sent from the originating station 10 (hereinafter referred to as the originating station TS), and the originating PCR of the designated PID by preset control information (eg, designated PID (packet identifier)). To extract.

これら抽出された受局ＰＣＲ及び発局ＰＣＲは、差分演算器２４にそれぞれ供給される。差分演算器２４は、受局ＰＣＲ値と発局ＰＣＲ値との差分を求める。このＰＣＲ差分値はＮＰＴ補正部２５に供給される。   The extracted receiving station PCR and originating station PCR are supplied to the difference calculator 24, respectively. The difference calculator 24 calculates the difference between the receiving PCR value and the originating PCR value. This PCR difference value is supplied to the NPT correction unit 25.

ＮＰＴ補正部２５には、さらに発局ＴＳに含まれる発局ＮＰＴ(Normal Play Time)参照メッセージ及び発局ＮＰＴ発火型汎用イベントメッセージが供給される。なお、発局ＮＰＴ参照メッセージは、発局ＴＳ内に含まれる時間情報としてのＳＴＣ（System Time Clock）及びＮＰＴの関係を定義するものである。   The NPT correction unit 25 is further supplied with a originating NPT (Normal Play Time) reference message and a originating NPT firing general event message included in the originating station TS. The originating NPT reference message defines the relationship between STC (System Time Clock) and NPT as time information included in the originating TS.

ＮＰＴ補正部２５は、上記差分演算器２４から出力されるＰＣＲ差分値を発局ＮＰＴ参照メッセージの基準ＳＴＣ値に加算することで、サービス単位で受局２０の基準ＳＴＣ値に補正するものである。なお、ＮＰＴ補正部２５は、発局ＮＰＴ発火型汎用イベントメッセージをタイミング調整してそのままスルーする。   The NPT correction unit 25 corrects the reference STC value of the receiving station 20 on a service basis by adding the PCR difference value output from the difference calculator 24 to the reference STC value of the originating NPT reference message. . The NPT correction unit 25 adjusts the timing of the originating NPT firing-type general-purpose event message and passes it through as it is.

上記構成において、以下にその動作を説明する。
すなわち、差分演算器２４は、受局ＰＣＲ抽出器２１により抽出される受局ＰＣＲ値と、発局ＰＣＲ抽出器２３により抽出される発局ＰＣＲ値との差分を求める。そして、ＮＰＴ補正部２５は、上記ＰＣＲ差分値をもとに、（１）式に従って発局ＮＰＴ参照メッセージの基準ＳＴＣ値（ＳＴＣreference値）をサービス単位で補正する。 The operation of the above configuration will be described below.
That is, the difference calculator 24 obtains the difference between the received station PCR value extracted by the received station PCR extractor 21 and the originating station PCR value extracted by the originating station PCR extractor 23. Then, the NPT correction unit 25 corrects the standard STC value (STC reference value) of the originating NPT reference message in units of services according to the equation (1) based on the PCR difference value.

補正後のＳＴＣreference値＝ＳＴＣreference_other＋ＰＣＲ差分値…（１）
但し、ＳＴＣreference_other：発局ＮＰＴ参照メッセージのＳＴＣreference値
これにより、発局１０と受局２０のＮＰＴ時間軸を合わせることができる。なお、発局ＮＰＴ発火型汎用イベントメッセージは、そのまま送出する。 STCreference value after correction = STCreference_other + PCR difference value (1)
However, STCreference_other: STCreference value of the originating station NPT reference message By this, the NPT time axes of the originating station 10 and the receiving station 20 can be matched. The originating NPT firing general-purpose event message is sent as it is.

以上のように上記第１の実施形態では、受局２０に送出装置が存在しない場合に、差分演算器２４にて、発局１０からの発局ＴＳに含まれている発局ＰＣＲ値を利用して、この発局ＰＣＲ値と受局２０で管理している受局ＰＣＲ値との差分から発局ＴＳに含まれる発局ＮＰＴ参照メッセージの基準ＳＴＣ値を補正するための補正信号を作成している。   As described above, in the first embodiment, when there is no transmission device in the receiving station 20, the difference calculator 24 uses the originating PCR value included in the originating TS from the originating station 10. Then, a correction signal for correcting the standard STC value of the originating NPT reference message included in the originating TS from the difference between the originating PCR value and the receiving PCR value managed by the receiving station 20 is created. ing.

従って、受局２０において、ＴＳの再構成を行なうためのサーバを用いることなく、発局ＮＰＴ参照メッセージの基準ＳＴＣ値を受局２０の基準ＳＴＣ値に合わせることができる。   Therefore, the receiving station 20 can match the standard STC value of the originating NPT reference message with the standard STC value of the receiving station 20 without using a server for reconfiguring the TS.

（第２の実施形態）
図３は、この発明の第２の実施形態として上記受局２０内に用いられるＴＳ処理装置の構成を示すブロック図である。ここでは、受局２０に送出装置を備えている場合について説明する。
図３において、第１の受信部３１は、発局ＴＳに含まれる発局ＮＰＴ参照メッセージを受信し、発局ＳＴＣ抽出器３１１により発局ＳＴＣ値を抽出し、発局ＮＰＴ抽出器３１２により発局ＮＰＴ値を抽出し、差分演算器３１３にて発局ＳＴＣ値と発局ＮＰＴ値との差分を求める。 (Second Embodiment)
FIG. 3 is a block diagram showing a configuration of a TS processing device used in the receiving station 20 as the second embodiment of the present invention. Here, a case where the receiving station 20 includes a transmission device will be described.
In FIG. 3, the first receiving unit 31 receives the originating NPT reference message included in the originating station TS, extracts the originating STC value by the originating STC extractor 311, and originates by the originating NPT extractor 312. The station NPT value is extracted, and the difference calculator 313 obtains the difference between the originating STC value and the originating NPT value.

第２の受信部３２は、送出装置により送出される受局ＴＳに含まれる受局ＮＰＴ参照メッセージを受信し、受局ＳＴＣ抽出器３２１により受局ＳＴＣ値を抽出し、受局ＮＰＴ抽出器３２２により受局ＮＰＴ値を抽出し、差分演算器３２３にて受局ＳＴＣ値と受局ＮＰＴ値との差分を求める。   The second receiving unit 32 receives the receiving station NPT reference message included in the receiving station TS sent by the sending device, extracts the receiving station STC value by the receiving station STC extractor 321, and receives the receiving station NPT extractor 322. Thus, the receiving station NPT value is extracted, and the difference calculator 323 obtains the difference between the receiving station STC value and the receiving station NPT value.

これら第１，第２の受信部３１，３２における演算結果は、差分演算器３３にそれぞれ供給される。差分演算器３３は、入力された演算結果の差分を求める。この差分値はＮＰＴ補正部３４に供給される。   The calculation results in the first and second receiving units 31 and 32 are supplied to the difference calculator 33, respectively. The difference calculator 33 calculates the difference between the input calculation results. This difference value is supplied to the NPT correction unit 34.

ＮＰＴ補正部３４には、さらに発局ＴＳに含まれる発局ＮＰＴ発火型汎用イベントメッセージが供給される。ＮＰＴ補正部３４は、上記差分演算器３３から出力される差分値を発局ＮＰＴ発火型汎用イベントメッセージのＮＰＴ発火時刻に加算することで、サービス単位で受局２０のＮＰＴ発火時刻に補正するものである。なお、受局ＮＰＴ発火型汎用イベントメッセージはそのままスルーされる。   The NPT correction unit 34 is further supplied with the originating NPT firing general event message included in the originating TS. The NPT correction unit 34 corrects the NPT firing time of the receiving station 20 on a service basis by adding the difference value output from the difference calculator 33 to the NPT firing time of the originating NPT firing general-purpose event message. It is. The station NPT firing general-purpose event message is passed through as it is.

上記構成において、以下にその動作を説明する。
第１，第２の受信部３１，３２では、入力された発局ＮＰＴ参照メッセージ及び受局ＮＰＴ参照メッセージを受信し、それぞれ（２），（３）式に従って発局ＰＣＲ値の差分Ａ及び受局ＰＣＲ値の差分Ｂを求める。 The operation of the above configuration will be described below.
The first and second receiving units 31 and 32 receive the input originating NPT reference message and the receiving NPT reference message, respectively, and according to the equations (2) and (3), the originating PCR value difference A and the receiving NPT reference message are received. The difference B of the station PCR values is obtained.

発局ＮＰＴ値、ＰＣＲ値の差分Ａ＝ＮＰＴref_C−ＳＴＣref_C…（２）
受局ＮＰＴ値、ＰＣＲ値の差分Ｂ＝ＮＰＴref_E−ＳＴＣref_E…（３）
但し、ＮＰＴref_C：発局ＮＰＴ参照メッセージの基準ＮＰＴ値
ＳＴＣref_C：発局ＮＰＴ参照メッセージの基準ＳＴＣ値
ＮＰＴref_E：受局ＮＰＴ参照メッセージの基準ＮＰＴ値
ＳＴＣref_E：受局ＮＰＴ参照メッセージの基準ＳＴＣ値
そして、差分演算器３３では、発局ＮＰＴ発火型汎用イベントメッセージ受信時のＳＴＣ値及び上記差分Ａ，Ｂから（４），（５）式に従って、発局１０の基準ＮＰＴ値及び受局２０の基準ＮＰＴ値を求める。 Difference between originating NPT value and PCR value A = NPTref_C−STCref_C (2)
Difference between receiving NPT value and PCR value B = NPTref_E−STCref_E (3)
NPTref_C: Reference NPT value of the originating NPT reference message
STCref_C: Standard STC value of originating NPT reference message
NPTref_E: Base NPT value of receiving NPT reference message
STCref_E: Base STC value of the receiving station NPT reference message Then, the difference computing unit 33 generates an originating time according to the equations (4) and (5) from the STC value at the time of receiving the originating NPT firing general event message and the above differences A and B. The reference NPT value of the station 10 and the reference NPT value of the receiving station 20 are obtained.

ＮＰＴref_C_new＝ＳＴＣ_C＋Ａ…（４）
ＮＰＴref_E_new＝ＳＴＣ_E＋Ｂ…（５）
但し、ＮＰＴref_C_new：発局ＮＰＴ基準値
ＮＰＴref_E_new：受局ＮＰＴ基準値
ＮＰＴ補正部３４では、上記（４），（５）式で求めた値の差分をＮＰＴ発火時刻に加算し補正する。 NPTref_C_new = STC_C + A (4)
NPTref_E_new = STC_E + B (5)
NPTref_C_new: Origin NPT reference value
NPTref_E_new: Receiving station NPT reference value The NPT correction unit 34 adds and corrects the difference between the values obtained by the above equations (4) and (5) to the NPT firing time.

補正ＮＰＴ発火時刻＝ＮＰＴ発火時刻＋（ＮＰＴref_C_new−ＮＰＴref_E_new）…（６）
以上のように上記第２の実施形態では、受局２０に受局ＴＳを送出する送出装置がある場合に、差分演算器３３にて、発局ＴＳに含まれる基準ＳＴＣ値、基準ＮＰＴ値及びＮＰＴ発火型イベントメッセージの受信時におけるＳＴＣ値と、受局ＴＳに含まれる基準ＳＴＣ値、基準ＮＰＴ値及びＮＰＴ発火型イベントメッセージの受信時におけるＳＴＣ値とを利用して、発局１０から送出されるＮＰＴ発火型イベントメッセージのＮＰＴ発火時刻を補正するための補正信号を作成している。 Correction NPT firing time = NPT firing time + (NPTref_C_new−NPTref_E_new) (6)
As described above, in the second embodiment, when there is a transmission device that transmits the receiving station TS to the receiving station 20, the difference calculator 33 uses the reference STC value, the reference NPT value, and the Using the STC value at the time of receiving the NPT firing type event message and the reference STC value included in the receiving station TS, the reference NPT value, and the STC value at the time of receiving the NPT firing type event message, it is sent from the originating station 10 A correction signal for correcting the NPT firing time of the NPT firing type event message is created.

従って、例えば発局１０から送られるＣＭデータを受局２０のＣＭデータに差し替えて送出するような場合でも、ＴＳの再構成を行なうためのサーバを用いることなく、ＮＰＴ発火型イベントメッセージの発火時刻を受局２０で管理している時刻に補正することができる。   Therefore, for example, even when CM data sent from the originating station 10 is replaced with CM data of the receiving station 20 and sent out, the firing time of the NPT firing type event message is used without using a server for reconfiguring the TS. Can be corrected to the time managed by the receiving station 20.

（その他の実施形態）
この発明は、上記各実施形態に限定されるものではない。例えば、上記実施形態では、ＴＳ受信系統を２系統としたが、さらに系統数を増加しても同様に実施可能である。 (Other embodiments)
The present invention is not limited to the above embodiments. For example, in the above embodiment, two TS reception systems are used, but the present invention can be similarly implemented even if the number of systems is further increased.

上記第１及び第２の実施形態を組み合わせてもよい。この場合、使用状況に応じて、第１の実施形態による構成及び第２の実施形態による構成を選択すればよい。   The first and second embodiments may be combined. In this case, what is necessary is just to select the structure by 1st Embodiment and the structure by 2nd Embodiment according to a use condition.

その他、システム構成、ＴＳ処理装置の構成、時間情報の補正手順等についても、この発明の要旨を逸脱しない範囲で種々変形して実施できる。   In addition, the system configuration, the TS processing device configuration, the time information correction procedure, and the like can be variously modified and implemented without departing from the gist of the present invention.

この発明のＴＳ処理装置が適用されるネット受信放送の概略構成図。The schematic block diagram of the network reception broadcasting to which the TS processor of this invention is applied. この発明の第１の実施形態としてのＴＳ処理装置の構成を示すブロック図。The block diagram which shows the structure of TS processing apparatus as 1st Embodiment of this invention. この発明の第２の実施形態としてのＴＳ処理装置の構成を示すブロック図。The block diagram which shows the structure of TS processing apparatus as 2nd Embodiment of this invention.

符号の説明Explanation of symbols

１０…発局、１１，２０１…アンテナ、２０…受局、２１…受局ＰＣＲ抽出器、２２…電圧制御型水晶発振器（ＶＣＸＯ）、２３…発局ＰＣＲ抽出器、２４，３３，３１３，３２３…差分演算器、２５、３４…ＮＰＴ補正部、３１…第１の受信部、３２…第２の受信部、３１１…発局ＳＴＣ抽出器、３１２…発局ＮＰＴ抽出器、３２１…受局ＳＴＣ抽出器、３２２…受局ＮＰＴ抽出器、ＮＷ…放送中継ネットワーク。   DESCRIPTION OF SYMBOLS 10 ... Originating station, 11, 201 ... Antenna, 20 ... Receiving station, 21 ... Receiving station PCR extractor, 22 ... Voltage controlled crystal oscillator (VCXO), 23 ... Originating PCR extractor, 24, 33, 313, 323 ... difference calculator 25, 34 ... NPT correction unit, 31 ... first receiving unit, 32 ... second receiving unit, 311 ... originating STC extractor, 312 ... originating NPT extractor, 321 ... receiving STC Extractor, 322, receiving station NPT extractor, NW, broadcast relay network.

Claims (4)

ネット送り局から送られ、サービスごとに時間情報としてのＳＴＣ（System Time Clock）及びＮＰＴ(Normal Play Time)、前記ＳＴＣ及び前記ＮＰＴの関係を示すＮＰＴ参照メッセージ及び前記ネット送り局の時間情報を示す第１のＰＣＲ（Program Clock Reference）値を含むＴＳ(Transport Stream)を受信するネット受け局に用いられるＴＳ処理装置において、
前記ネット受け局の時間情報を示す第２のＰＣＲ値を発生する発生手段と、
前記ネット送り局からのＴＳを受信して前記第１のＰＣＲ値を抽出する抽出手段と、
前記第１のＰＣＲ値と前記第２のＰＣＲ値との差分を求める演算手段と、
この演算手段で求められた差分データに基づいて、前記ＴＳに含まれるＮＰＴ参照メッセージ内のＳＴＣを基準とする基準ＳＴＣ値をサービスごとに補正する補正手段とを具備したことを特徴とするＴＳ処理装置。 It shows the time information of STC (System Time Clock) and NPT (Normal Play Time) as time information, NPT reference message indicating the relationship between the STC and the NPT, and the time information of the net sending station for each service. In a TS processing apparatus used in a network receiving station that receives a TS (Transport Stream) including a first PCR (Program Clock Reference) value,
Generating means for generating a second PCR value indicating time information of the net receiving station;
Extracting means for receiving the TS from the net sending station and extracting the first PCR value;
Computing means for obtaining a difference between the first PCR value and the second PCR value;
TS processing comprising correction means for correcting, for each service, a standard STC value based on the STC in the NPT reference message included in the TS based on the difference data obtained by the calculation means apparatus. ネット送り局から送られ、サービスごとに時間情報としてのＳＴＣ（System Time Clock）及びＮＰＴ(Normal Play Time)、前記ＳＴＣ及び前記ＮＰＴの関係を示すＮＰＴ参照メッセージ及びＮＰＴ発火型イベントメッセージを含む発局ＴＳ(Transport Stream)を受信し、受局ＴＳを送出するネット受け局に用いられるＴＳ処理装置において、
前記ネット送り局から送られた発局ＴＳ内のＮＰＴを基準とする基準ＮＰＴ値と前記ＳＴＣを基準とする基準ＳＴＣ値との差分を求める第１の演算手段と、
前記受局ＴＳ内のＮＰＴを基準とする基準ＮＰＴ値と前記ＳＴＣを基準とする基準ＳＴＣ値との差分を求める第２の演算手段と、
前記ＮＰＴ発火型イベントメッセージの受信時における前記発局ＴＳ内のＳＴＣ値に前記第１の演算手段で求められた差分データを加算することで、第１の基準ＮＰＴ値を求める第３の演算手段と、
前記ＮＰＴ発火型イベントメッセージの受信時における前記受局ＴＳ内のＳＴＣ値に前記第２の演算手段で求められた差分データを加算することで、第２の基準ＮＰＴ値を求める第４の演算手段と、
前記第１の基準ＮＰＴ値と前記第２の基準ＮＰＴ値との差分を求める第５の演算手段と、
この第５の演算手段で得られた差分データに基づいて、前記ＮＰＴ発火型イベントメッセージの発火時刻を補正する補正手段とを具備したことを特徴とするＴＳ処理装置。 A station that is sent from a network sending station and includes STC (System Time Clock) and NPT (Normal Play Time) as time information for each service, an NPT reference message indicating the relationship between the STC and the NPT, and an NPT firing type event message In a TS processing device used in a network receiving station that receives TS (Transport Stream) and sends out a receiving station TS,
First computing means for obtaining a difference between a reference NPT value based on the NPT in the originating station TS sent from the net sending station and a reference STC value based on the STC;
Second computing means for obtaining a difference between a reference NPT value based on the NPT in the receiving station TS and a reference STC value based on the STC;
Third computing means for obtaining the first reference NPT value by adding the difference data obtained by the first computing means to the STC value in the originating TS at the time of receiving the NPT firing type event message When,
Fourth computing means for obtaining a second reference NPT value by adding the difference data obtained by the second computing means to the STC value in the receiving station TS at the time of reception of the NPT firing type event message When,
Fifth arithmetic means for obtaining a difference between the first reference NPT value and the second reference NPT value;
A TS processing apparatus comprising: correction means for correcting the firing time of the NPT firing type event message based on the difference data obtained by the fifth computing means. ネット送り局から送られ、サービスごとに時間情報としてのＳＴＣ（System Time Clock）及びＮＰＴ(Normal Play Time)、前記ＳＴＣ及び前記ＮＰＴの関係を示すＮＰＴ参照メッセージ及び前記ネット送り局の時間情報を示す第１のＰＣＲ（Program Clock Reference）値を含むＴＳ(Transport Stream)を受信するネット受け局に用いられるＴＳ処理方法において、
前記ネット受け局の時間情報を示す第２のＰＣＲ値を発生し、
前記ネット送り局からのＴＳを受信して前記第１のＰＣＲ値を抽出し、
前記第１のＰＣＲ値と前記第２のＰＣＲ値との差分を求め、
この差分データに基づいて、前記ＴＳに含まれるＮＰＴ参照メッセージ内のＳＴＣを基準とする基準ＳＴＣ値をサービスごとに補正するようにしたことを特徴とするＴＳ処理装置。 It shows the time information of STC (System Time Clock) and NPT (Normal Play Time) as time information, NPT reference message indicating the relationship between the STC and the NPT, and the time information of the net sending station for each service. In a TS processing method used in a network receiving station that receives a TS (Transport Stream) including a first PCR (Program Clock Reference) value,
Generating a second PCR value indicating time information of the net receiving station;
Receiving the TS from the net sending station and extracting the first PCR value;
Obtaining a difference between the first PCR value and the second PCR value;
A TS processing apparatus, wherein a reference STC value based on an STC in an NPT reference message included in the TS is corrected for each service based on the difference data. ネット送り局から送られ、サービスごとに時間情報としてのＳＴＣ（System Time Clock）及びＮＰＴ(Normal Play Time)、前記ＳＴＣ及び前記ＮＰＴの関係を示すＮＰＴ参照メッセージ及びＮＰＴ発火型イベントメッセージを含む発局ＴＳ(Transport Stream)を受信し、受局ＴＳを送出するネット受け局に用いられるＴＳ処理方法において、
前記ネット送り局から送られた発局ＴＳ内のＮＰＴを基準とする基準ＮＰＴ値と前記ＳＴＣを基準とする基準ＳＴＣ値との差分を求め、
前記受局ＴＳ内のＮＰＴを基準とする基準ＮＰＴ値と前記ＳＴＣを基準とする基準ＳＴＣ値との差分を求め、
前記ＮＰＴ発火型イベントメッセージの受信時における前記発局ＴＳ内のＳＴＣ値に前記第１の演算手段で求められた差分データを加算することで、第１の基準ＮＰＴ値を求め、
前記ＮＰＴ発火型イベントメッセージの受信時における前記受局ＴＳ内のＳＴＣ値に前記第２の演算手段で求められた差分データを加算することで、第２の基準ＮＰＴ値を求め、
前記第１の基準ＮＰＴ値と前記第２の基準ＮＰＴ値との差分を求め、
この差分データに基づいて、前記ＮＰＴ発火型イベントメッセージの発火時刻を補正するようにしたことを特徴とするＴＳ処理方法。 A station that is sent from a network sending station and includes STC (System Time Clock) and NPT (Normal Play Time) as time information for each service, an NPT reference message indicating the relationship between the STC and the NPT, and an NPT firing type event message In a TS processing method used in a network receiving station that receives TS (Transport Stream) and sends out a receiving station TS,
Obtaining a difference between a reference NPT value based on the NPT in the originating station TS sent from the net sending station and a reference STC value based on the STC;
A difference between a reference NPT value based on the NPT in the receiving station TS and a reference STC value based on the STC;
A first reference NPT value is obtained by adding the difference data obtained by the first computing means to the STC value in the originating TS at the time of receiving the NPT firing type event message,
A second reference NPT value is obtained by adding the difference data obtained by the second computing means to the STC value in the receiving station TS at the time of reception of the NPT firing type event message,
Obtaining a difference between the first reference NPT value and the second reference NPT value;
A TS processing method, wherein the firing time of the NPT firing-type event message is corrected based on the difference data.
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