JP2006157495A - Psi/si-generating device - Google Patents

Psi/si-generating device Download PDF

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JP2006157495A
JP2006157495A JP2004345357A JP2004345357A JP2006157495A JP 2006157495 A JP2006157495 A JP 2006157495A JP 2004345357 A JP2004345357 A JP 2004345357A JP 2004345357 A JP2004345357 A JP 2004345357A JP 2006157495 A JP2006157495 A JP 2006157495A
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psi
section
information
multiplexing
transmitting
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JP2006157495A5 (en
JP4591060B2 (en
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Nobuhisa Makino
展久 牧野
Masafumi Yamaguchi
雅史 山口
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem of an indispensable expensive dedicated device being required, having integrated real-time OS or the like for time management with superior accuracy in a transmission device for transmitting program information, in which strict time management between two devices for synchronization is required, if video image/voice/data broadcast service and program information (PSI/SI) are entered from various different devices and multiplexed. <P>SOLUTION: In the PSI/SI generating device 1, the need for strict time management conducted from the PSI/SI generating device 1 is canceled out by transmitting a section 202 to be transmitted from a multiplexing device 2 previously. Instead, the PSI/SI generating device 1 has the function for adding a transmission initiation time to the section 202 and a function for transmitting to the multiplexing device 2 for each cyclic group. Then, the sections to be transmitted can be switched easily by the multiplexing device 2, and time coordination among these devices becomes unnecessary, so the TS output of service with added program information can be carried out in a simple device configuration. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、番組配信システムの多重化に関するものであり、特にCATV(ケーブルテレビ)の自主放送等でテレビサービス、音声サービス、データサービス等の複数のサービスを一つのサービスのTS(トランスポートストリーム)としてPSI/SI(番組特定情報/番組配列情報)を付加して多重化するシステムに適用できる。   The present invention relates to multiplexing of a program distribution system, and in particular, a plurality of services such as a television service, an audio service, a data service, etc. in a CATV (cable television) independent broadcasting, etc., are a single service TS (transport stream). It can be applied to a system in which PSI / SI (program identification information / program arrangement information) is added and multiplexed.

デジタルCATVシステムにおいて、視聴者へのサービスとしてEPG(番組情報)が提供されている。この番組情報はPSI/SIを構成するテーブルを一定の周期に従い、繰り返し番組とともに送信することで提供されている。   In the digital CATV system, EPG (program information) is provided as a service to viewers. This program information is provided by repeatedly transmitting a table constituting the PSI / SI together with a program according to a certain period.

PSIはMPEG2 Systems(ISO/IEC13818−1,ITU−T H.222.0)で規格化されており、所要の番組を選択するために必要な情報でPAT(Program Association Table)、PMT(Program Map Table)、NIT(Network Information Table)、CAT(Conditional Access Table)の4つのテーブルからなる。   PSI is standardized by MPEG2 Systems (ISO / IEC13818-1, ITU-T H.222.0), and PAT (Program Association Table) and PMT (Program Map) are information necessary for selecting a required program. Table), NIT (Network Information Table), and CAT (Conditional Access Table).

SIはARIB STD−B10で規定されており、番組選択の利便性のために規定された各種情報でSDT(Service Description Table)、EIT(Event Information Table)、BIT(Broadcaster Information Table)、TOT(Time Ofset Table)等のテーブルからなる。   SI is defined by ARIB STD-B10, and is SDT (Service Description Table), EIT (Event Information Table), BIT (Broadcaster Information Table), TOT (Time), and various information defined for the convenience of program selection. This table is made up of a table such as “Offset Table”.

番組情報を番組に付加し、TSとして多重化し送出する技術は以前からあったが(例えば、特許文献1を参照)、多重化装置は入力された情報を多重化する機能のみを有する装置であり、別々の装置から入力する番組のトランスポートストリーム(TS)とPSI/SIの送出タイミングを合わせて多重化するには、PSI/SIを送出する装置が、厳密に時間管理を行いながら周期遅れのないように多重化装置へ情報を入力する必要があった。
特開2001−186481号公報
Although there has been a technique for adding program information to a program and multiplexing and sending it as a TS (see, for example, Patent Document 1), a multiplexing device is a device having only a function of multiplexing input information. In order to multiplex the transport stream (TS) of a program input from different devices and the PSI / SI transmission timing together, the PSI / SI transmitting device must perform period management while strictly managing the time. It was necessary to input information to the multiplexer so that there was no such problem.
JP 2001-186481 A

デジタルCATVシステムの自主放送システムにおいて、番組とPSI/SIを多重化して送出するには図4のようにPSI/SI生成装置5とPSI/SI送出装置4と多重化装置6の3台の装置を必要とする。   In the independent broadcasting system of the digital CATV system, in order to multiplex and transmit a program and PSI / SI, three devices, a PSI / SI generation device 5, a PSI / SI transmission device 4, and a multiplexing device 6, as shown in FIG. Need.

PSI/SI生成装置5は入力されたPSI/SI情報101を基にセクション202を生成し、PSI/SI送出装置4はセクション202をTS204として、厳密に時間管理を行いながら周期通りに送出し、多重化装置6は番組のTS201とPSI/SIのTS204を多重化する。   The PSI / SI generation device 5 generates a section 202 based on the input PSI / SI information 101, and the PSI / SI transmission device 4 transmits the section 202 as TS204 in a periodic manner while strictly managing the time, Multiplexer 6 multiplexes program TS 201 and PSI / SI TS 204.

PSI/SI送出装置4は時間管理を行う為にリアルタイムOSを搭載した高価な専用装置が必要である。   The PSI / SI transmission device 4 requires an expensive dedicated device equipped with a real-time OS in order to perform time management.

本発明は、前記課題を解決するために図1のPSI/SI生成装置1で生成されたセクション202を、従来のPSI/SI送出装置4は介さずに直接、多重化装置2に入力する。   In the present invention, the section 202 generated by the PSI / SI generation apparatus 1 of FIG. 1 is directly input to the multiplexing apparatus 2 without going through the conventional PSI / SI transmission apparatus 4 in order to solve the above-mentioned problem.

その為に、PSI/SI生成装置1はセクション202に送出開始時間を付与し、セクション202は常に今、送出されるものと次ぎに送出されるものだけが周期グループ別に多重化装置2に入力されることで、多重化装置2のPSI/SIの時間管理を行う処理負荷を軽減する。   For this purpose, the PSI / SI generating apparatus 1 gives a transmission start time to the section 202, and the section 202 is always input to the multiplexing apparatus 2 only for what is now sent and what is sent next. As a result, the processing load for performing time management of the PSI / SI of the multiplexing device 2 is reduced.

本発明により、デジタルCATVシステムの自主放送において、PSI/SIを送出する専用装置をなくすことが可能となり、機器構成を簡略化し、自主放送送信システムの導入、運用、保守費用を削減することが可能となる。   According to the present invention, it is possible to eliminate a dedicated device for transmitting PSI / SI in independent broadcasting of a digital CATV system, simplify the equipment configuration, and reduce the introduction, operation, and maintenance costs of the independent broadcasting transmission system. It becomes.

以下本発明の実施の例について、デジタルCATVシステムのPSI/SI生成を例にとり、図面を参照しながら説明する。   Embodiments of the present invention will be described below with reference to the drawings, taking PSI / SI generation of a digital CATV system as an example.

(実施の形態1)
図1は、番組とPSI/SIを多重化するシステム構成の一例である。
(Embodiment 1)
FIG. 1 shows an example of a system configuration for multiplexing a program and PSI / SI.

ENC(エンコーダ)3は入力された自主放送、コミュニティチャンネル等のアナログコンテンツの入力301をTS(Transport Stream)201にエンコードし多重化装置2へ出力する。   The ENC (encoder) 3 encodes the input 301 of analog content such as a voluntary broadcast or community channel into a TS (Transport Stream) 201 and outputs it to the multiplexing device 2.

PSI/SI生成装置1は入力された、PSI/SI情報101と多重化装置情報102と周期情報103を基にセクション202を生成し多重化装置2へ出力する。多重化装置情報102は多重化装置の動作設定値の情報であり、周期情報103はPSI/SIテーブルの送出周期間隔の値である。   The PSI / SI generating apparatus 1 generates a section 202 based on the input PSI / SI information 101, multiplexing apparatus information 102, and period information 103, and outputs the section 202 to the multiplexing apparatus 2. Multiplexer information 102 is information on operation setting values of the multiplexer, and period information 103 is a value of a transmission period interval of the PSI / SI table.

多重化装置2はTS201とセクション202を多重化し、64QAM変調後、RF信号203として出力する。   Multiplexer 2 multiplexes TS 201 and section 202, and outputs the signal as RF signal 203 after 64QAM modulation.

図2はPSI/SI生成装置1の構成の一例である。   FIG. 2 shows an example of the configuration of the PSI / SI generation apparatus 1.

PSI/SI生成装置1は、PSI/SI情報入力部11に入力されるPSI/SI情報101を記憶するPSI/SI情報記憶部14と、多重化装置情報入力部12に入力される多重化装置情報102を記憶する多重化装置情報記憶部15と、周期情報入力部13に入力される周期情報103を記憶する周期情報記憶部16と、内部時計17を監視しながら送出タイミングを管理するスケジュール管理部18と、スケジュール管理部の指示によりセクション202を生成し多重化装置2に送信するセクション情報生成・送信部19から構成される。   The PSI / SI generation device 1 includes a PSI / SI information storage unit 14 that stores PSI / SI information 101 input to the PSI / SI information input unit 11 and a multiplexing device input to the multiplexing device information input unit 12. Multiplexer information storage unit 15 for storing information 102, cycle information storage unit 16 for storing cycle information 103 input to cycle information input unit 13, and schedule management for managing transmission timing while monitoring internal clock 17 And a section information generation / transmission unit 19 that generates a section 202 in accordance with an instruction from the schedule management unit and transmits the section 202 to the multiplexing apparatus 2.

ここで、スケジュール管理部18は、内部時計17を監視しながら、PSI/SI情報記憶部14に記憶されたPSI/SI情報101を管理し、切り替え時間がくるとセクション情報生成・送信部19にセクション202の生成・送信指示を出す。切り替え時間には、セグメント単位に行なわれる、決められた3時間毎の定期切り替え時間と、番組と番組の変わり目による切り替え時間が存在し、番組と番組切り替え時間はPSI/SI情報101の中のEITに記載されている番組開始時間を切り替え時間としている。   Here, the schedule management unit 18 manages the PSI / SI information 101 stored in the PSI / SI information storage unit 14 while monitoring the internal clock 17. When the switching time comes, the schedule management unit 18 notifies the section information generation / transmission unit 19. A section 202 generation / transmission instruction is issued. The switching time includes a predetermined periodic switching time every 3 hours, and switching time due to a change between programs, and the program and program switching time are EIT in the PSI / SI information 101. Is set as the switching time.

スケジュール管理部18はPSI/SI情報記憶部14が記憶するSI情報のEITテーブルから番組の放送開始時間を抜き出し、これをセクション情報生成・送信部19がセクション情報に組み込んで多重化装置2に送信する。   The schedule management unit 18 extracts the broadcast start time of the program from the SI information EIT table stored in the PSI / SI information storage unit 14, and the section information generation / transmission unit 19 incorporates this in the section information and transmits it to the multiplexing device 2. To do.

図5はセクション202の一例であり、PSI/SIの本来のセクション情報38に、多重化装置を制御する送出開始時間37や、通信を行なう為のコマンドID33、データ長34、CRC39等を付加したものを合わせてセクション202を構成している。   FIG. 5 shows an example of the section 202. The transmission start time 37 for controlling the multiplexing apparatus, the command ID 33 for communication, the data length 34, the CRC 39, etc. are added to the original section information 38 of PSI / SI. Together, the section 202 is configured.

セクション情報生成・送信部19は予め、次に送信するセクション202に送出開始時刻を付与して生成・送信する。但し初回等で現在送出するセクション202が未送信の場合は、現在送出するセクション202と次に送出されるセクション202に送出開始時刻を付与して生成・送信する。   The section information generation / transmission unit 19 generates and transmits a section 202 to be transmitted next by giving a transmission start time in advance. However, when the section 202 to be transmitted at the first time or the like has not been transmitted yet, the section 202 that is currently transmitted and the section 202 that is transmitted next are given a transmission start time, and are generated and transmitted.

図3は多重化装置2の構成の一例である。   FIG. 3 shows an example of the configuration of the multiplexing apparatus 2.

多重化装置2は、セクション202が入力されるセクション情報入力部21と、入力されたセクション202をTSパケット化するTSP生成部22と、TSパケット化された情報を記憶するTSP記憶部23と、内部時計25を監視しながら送出タイミングを管理するスケジュール管理部26と、TS201を入力するTS入力部24とスケジュール管理部26の指示によりTSP記憶部23に記憶された情報とTS入力部24に入力されたTS201を多重化する多重化部27と、多重化部27で多重された情報を64QAM変調しRF203として出力する64QAM変調部28で構成される。   The multiplexing apparatus 2 includes a section information input unit 21 to which the section 202 is input, a TSP generation unit 22 that converts the input section 202 into a TS packet, a TSP storage unit 23 that stores TS packetized information, The schedule management unit 26 that manages the transmission timing while monitoring the internal clock 25, the TS input unit 24 that inputs TS 201, and the information stored in the TSP storage unit 23 according to instructions from the schedule management unit 26 and the TS input unit 24 The multiplexing unit 27 that multiplexes the TS 201 that has been multiplexed and the 64 QAM modulation unit 28 that 64QAM modulates the information multiplexed by the multiplexing unit 27 and outputs the result as RF 203.

ここで、TSP記憶部23は、現在送出するセクション202のほかに常に、次のセクション202をバッファしている。   Here, the TSP storage unit 23 always buffers the next section 202 in addition to the section 202 currently transmitted.

スケジュール管理部26は内部時計25を監視するとともに、TSP記憶部23が記憶するセクション情報に付与された送出開始時刻と内部時計を比較し、両者が一致すると送出するTSパケットの切り替えを行う。また、過去のセクション202はPSI/SI生成装置1から次のセクション202を受信するタイミングで削除され、TSP記憶部23が更新される。次のセクション202が存在しない場合は、PSI/SI生成装置1からの削除指示によりTSP記憶部23から削除される。   The schedule management unit 26 monitors the internal clock 25, compares the transmission start time given to the section information stored in the TSP storage unit 23 with the internal clock, and switches the TS packet to be transmitted when the two match. Further, the past section 202 is deleted at the timing when the next section 202 is received from the PSI / SI generating apparatus 1, and the TSP storage unit 23 is updated. If the next section 202 does not exist, it is deleted from the TSP storage unit 23 in response to a deletion instruction from the PSI / SI generating apparatus 1.

多重化部27は切り替えられたTSパケットを多重化する。   The multiplexing unit 27 multiplexes the switched TS packets.

このように、PSI/SI生成装置1は予め次に送出されるセクション202を多重化装置2に送信しておくことができるので、従来のように番組の変わり目や時間経過によるセクションの切り替え時に即時にセクション202の切り替えを行うことが不要となり、厳密に時間管理する必要がなく余裕を持ってセクション202を生成・送出することが可能となる。これにより、セクション202の送出タイミングを管理するPSI/SI送出装置が不要となるのでCATVヘッドエンド設備のコストダウンが可能となる。   As described above, since the PSI / SI generating apparatus 1 can transmit the section 202 to be transmitted next to the multiplexing apparatus 2 in advance, it can be immediately performed at the time of section switching due to a program change or time passage as in the past. Therefore, it becomes unnecessary to switch the section 202, and it is not necessary to strictly manage the time, and the section 202 can be generated and transmitted with a margin. This eliminates the need for a PSI / SI transmission device that manages the transmission timing of the section 202, thereby reducing the cost of the CATV headend equipment.

(実施の形態2)
実施の形態2ではさらに、PSI/SI生成装置1のセクション情報生成・送信部19が周期情報記憶部16よりセクション202の送出周期情報103を取得し、ARIBで規定されたPSI/SIを構成する各テーブルの送出周期が同じものを集めた周期グループに分けてセクション202を送出するようにした。
(Embodiment 2)
Further, in the second embodiment, the section information generation / transmission unit 19 of the PSI / SI generation apparatus 1 acquires the transmission cycle information 103 of the section 202 from the cycle information storage unit 16, and configures the PSI / SI defined by ARIB. The section 202 is transmitted by dividing it into a periodic group in which the tables having the same transmission period are collected.

多重化装置2のTSP記憶部23は、周期グループ別にTSパケットを記憶しており、スケジュール管理部26は内部時計25を監視し、セクション202に付与された送出開始時刻になると、送出するTSパケットの切り替えを行うとともに、切り替えられたTSパケットを定められた周期に従って多重化する。   The TSP storage unit 23 of the multiplexing apparatus 2 stores TS packets for each periodic group, and the schedule management unit 26 monitors the internal clock 25, and when the transmission start time given to the section 202 comes, the TS packet to be transmitted Are switched, and the switched TS packets are multiplexed according to a predetermined period.

これにより、多重化装置2側で必要であったテーブルの選択とそれぞれの送出周期の管理が不要となり、多重化装置の負担を軽減することが可能となる。   This eliminates the need for table selection and transmission cycle management required on the multiplexing apparatus 2 side, thereby reducing the burden on the multiplexing apparatus.

以上、実施の形態1、2においては各機能が個々の要素となって本発明を実現する例を用いて説明したが、これら各機能を実現する各手段が1つまたは複数のチップ上で動作する構成とすることも可能である。また、これらの各手段をコンピュータで読み取り可能なプログラムまたはプログラムに順ずるものとして構成し、電子番組ガイド生成装置やこれと同等の機能を実現可能な装置にソフトウェアとして組み込むことも可能である。さらに、これらプログラム等をCD−ROM等の記録媒体に格納することも可能である。これにより、上記各機能を実現する各手段をPSI/SI生成装置やこれと同等の機能を実現可能な様々な装置で実現することができる。   As described above, the first and second embodiments have been described using the example in which each function is an individual element to realize the present invention. However, each means for realizing each function operates on one or a plurality of chips. It is also possible to adopt a configuration. It is also possible to configure each of these means as a computer-readable program or a program that can be incorporated as software in an electronic program guide generation device or a device capable of realizing the same function. Further, these programs can be stored in a recording medium such as a CD-ROM. As a result, each means for realizing the above functions can be realized by a PSI / SI generating apparatus and various apparatuses capable of realizing the same function.

CATV会社において、コミュニティチェンネル等の自主放送に電子番組表(EPG)をつけて配信するサービスを、従来の機器構成よりも簡素化された機器構成での導入・運用が可能となる。   In a CATV company, it is possible to introduce and operate a service that distributes a self-broadcast such as a community channel with an electronic program guide (EPG) with a simplified device configuration.

番組とPSI/SIを多重化するシステムの構成図Configuration diagram of a system for multiplexing programs and PSI / SI PSI/SI生成装置の構成を示すブロック図Block diagram showing the configuration of the PSI / SI generator 多重化装置の構成を示すブロック図Block diagram showing the configuration of the multiplexer 従来の番組とPSI/SIを多重化するシステムの構成図Configuration diagram of a system for multiplexing conventional programs and PSI / SI セクション情報構成図Section information configuration diagram

符号の説明Explanation of symbols

1 PSI/SI生成装置
2 多重化装置
3 ENC(エンコーダ)
4 PSI/SI送出装置
5 従来PSI/SI生成装置
6 従来多重化装置
11 PSI/SI情報入力部
12 多重化装置情報入力部
13 周期情報入力部
14 PSI/SI情報記憶部
15 多重化装置情報記憶部
16 周期情報記憶部
17 内部時計
18 スケジュール管理部
19 セクション情報生成・送信部
21 セクション情報入力部
22 TSP生成部
23 TSP記憶部
24 TS入力部
25 内部時計
26 スケジュール管理部
27 多重化部
28 64QAM変調部
31 start
32 アドレス
33 コマンドID
34 データ長
35 サービスID
36 管理番号
37 送出開始時間
38 セクション情報
39 CRC
101 PSI/SI情報
102 多重化装置情報
103 周期情報
201 TS
202 セクション情報
203 RF
204 TS
205 TS
301 自主放送、コミュニティチャンネル等のアナログコンテンツの入力
1 PSI / SI generator 2 Multiplexer 3 ENC (encoder)
4 PSI / SI sending device 5 Conventional PSI / SI generating device 6 Conventional multiplexing device 11 PSI / SI information input unit 12 Multiplexing device information input unit 13 Period information input unit 14 PSI / SI information storage unit 15 Multiplexing device information storage Unit 16 Period information storage unit 17 Internal clock 18 Schedule management unit 19 Section information generation / transmission unit 21 Section information input unit 22 TSP generation unit 23 TSP storage unit 24 TS input unit 25 Internal clock 26 Schedule management unit 27 Multiplexing unit 28 64QAM Modulator 31 start
32 Address 33 Command ID
34 Data length 35 Service ID
36 Control number 37 Transmission start time 38 Section information 39 CRC
101 PSI / SI information 102 Multiplexer information 103 Period information 201 TS
202 Section information 203 RF
204 TS
205 TS
301 Input of analog contents such as independent broadcasting and community channels

Claims (2)

番組特定情報と番組配列情報を構成するテーブルのセクション情報を生成するPSI/SI生成装置において、セクション単位に送出開始時間を付加する手段と、現在とその次に送出すべきセクションを多重化装置に送信する手段と、セクションを周期グループ別に多重化装置に送信する手段を持つことを特徴とするPSI/SI生成装置。 In a PSI / SI generating apparatus for generating section information of a table constituting program specifying information and program arrangement information, a means for adding a transmission start time for each section, and a section to be transmitted next and next are multiplexed in the multiplexing apparatus. A PSI / SI generating apparatus comprising means for transmitting and means for transmitting a section to a multiplexing apparatus for each period group. 複数の映像、音声、データサービスと番組特定情報、番組配列情報を多重化する多重化装置において、請求項1記載のPSI/SI生成装置より送信されたセクションをトランスポートストリームパケット化し多重化する手段と、セクションごとに付加された送出開始時間に合わせてTSパケットを切り替えて送出する手段を持つことを特徴とする多重化装置。 2. A multiplexing apparatus for multiplexing a plurality of video, audio, data services, program identification information, and program arrangement information, and means for transporting the packet transmitted from the PSI / SI generating apparatus according to claim 1 into a transport stream packet and multiplexing the section. And a means for switching and transmitting TS packets according to the transmission start time added for each section.
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Cited By (2)

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JP2015195525A (en) * 2014-03-31 2015-11-05 マスプロ電工株式会社 Multiplexing device and digital modulator
JP2017163284A (en) * 2016-03-08 2017-09-14 日本放送協会 Time mapping information generation device, synchronous reproduction system, time mapping information generation method, and time mapping information generation program

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JP2001186481A (en) * 1999-12-27 2001-07-06 Matsushita Electric Ind Co Ltd Device and method for transmitting program information, computer readable recording medium and digital broadcast transmission system

Patent Citations (1)

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JP2001186481A (en) * 1999-12-27 2001-07-06 Matsushita Electric Ind Co Ltd Device and method for transmitting program information, computer readable recording medium and digital broadcast transmission system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015195525A (en) * 2014-03-31 2015-11-05 マスプロ電工株式会社 Multiplexing device and digital modulator
JP2017163284A (en) * 2016-03-08 2017-09-14 日本放送協会 Time mapping information generation device, synchronous reproduction system, time mapping information generation method, and time mapping information generation program

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