JP3551903B2

JP3551903B2 - Data receiving apparatus, data transmitting / receiving apparatus, video equipment, their methods, and their methods

Info

Publication number: JP3551903B2
Application number: JP2000245687A
Authority: JP
Inventors: 和樹大鍬
Original assignee: Sony Corp
Current assignee: Sony Corp
Priority date: 1995-03-16
Filing date: 2000-08-14
Publication date: 2004-08-11
Anticipated expiration: 2019-08-11
Also published as: JP2001119694A

Description

【０００１】
【産業上の利用分野】
本発明は、複数の伝送用パケットを同一伝送路上で伝送するために用いられるデータ受信装置、データ送受信装置、映像機器およびこれらを用いたデータ伝送システム、映像信号処理システム、並びに、これらの方法に関する。
【０００２】
【従来の技術】
映像編集等に用いられる装置間で、ディジタルビデオ信号（以下、単にビデオ信号と記す）等を伝送するための方式として、シリアルディジタルインターフェース（ＳＤＩ）方式が従来から用いられている。ＳＤＩ方式の信号フォーマットは、ディジタル形式の映像信号および音声信号の規格として、ＳＭＰＴＥ（Society of Motion Picture and Television Engineerings ）のＳＭＰＴＥ−２９５Ｍに標準化されている。
ＳＤＩ方式は、Ｄ１方式およびＤ２方式のディジタル形式のビデオ信号の伝送に用いられ、その伝送速度は２７０ＭＨｚと高速である。
【０００３】
しかしながら、ＳＤＩ方式は、伝送可能な信号が映像信号１チャネル分のみ、ベースバンドの音声信号８チャネル分のみと限定されており、現在、放送あるいは映像編集の分野において高まりつつあるマルチメディア化あるいはマルチチャネル化への要望に対応するために必ずしも適していない。
このため、ＳＤＩ方式とかなりの互換性を有しながら、可変長映像信号データを伝送可能といったように、マルチメディアにより適合性が高いＳＤＤＩ方式が提案されている。
【０００４】
ＳＤＩ方式の信号とＳＤＤＩ方式の信号とを伝送するためには、図７に示すデータ伝送装置８を用いることが考えられる。
データ伝送装置８は、データ送信装置８００とデータ受信装置８３０とから構成されている。データ送信装置８００は、入力されたＳＤＩ方式の信号（ＳＤＩデータ）とＳＤＤＩ方式のデータ（ＳＤＤＩデータ）を、それぞれＦＩＦＯ８１２，８２２に保存し、さらにパラレル／シリアル変換回路（Ｐ／Ｓ変換回路）８１０，８２０によりシリアルデータに変換し、これらのシリアルデータをＳＤＩ方式の伝送路とＳＤＤＩ方式の伝送路との別々の伝送路を用いてデータ受信装置８３０に対して送信するように構成されている。
【０００５】
また、データ受信装置８３０は、データ送信装置８００からＳＤＩ方式の伝送路とＳＤＤＩ方式の伝送路との別々の伝送路を送られてきたこれらシリアルデータ形式の信号を、それぞれシリアル／パラレル変換回路（Ｓ／Ｐ変換回路）８４２，８５２でパラレルデータ形式に変換し、ＦＩＦＯ８４０，８５０に保存して、データ送信装置８００に入力された元のＳＤＩデータおよびＳＤＤＩデータに分離し、データ伝送装置８の外部に出力するように構成されている。
【０００６】
なお、データ送信装置８００とデータ受信装置８３０との間で信号伝送のタイミング等を規定する同期信号はデータ受信装置８３０側からＦＩＦＯ８３２およびＰ／Ｓ変換回路８３４により、ＳＤＩ方式の伝送路とＳＤＤＩ方式の伝送路とはさらに別の伝送路を用いてデータ送信装置８００側に送信される。Ｓ／Ｐ変換回路８０２およびＦＩＦＯ８０４により元の同期信号を再生し、データ送信装置８００は、再生した同期信号をデータ送信装置８００の内部処理等に用いる。
【０００７】
【発明が解決しようとする課題】
ここで、伝送路の数を減らし、伝送路の敷設工事を簡略化したい等の理由により、ＳＤＩ方式の信号とＳＤＤＩ方式の信号とを、同一の伝送路を用いて伝送したいという要請がある。しかしながら、ＳＤＩ方式の信号には固定長データのみが含まれるのに対し、ＳＤＤＩ方式の信号には固定長データの他、可変長データが含まれることがある。したがって、これらの信号を同一伝送路を用いて伝送した場合、受信側のデータ受信装置において、ＳＤＩ方式の信号とＳＤＤＩ方式の信号とを分離して、それぞれの方式の信号に対応する映像編集装置等に供給する必要がある。
【０００８】
本発明は、上述した従来技術の問題点に鑑みてなされたものであり、ＳＤＩ方式対応の映像機器とＳＤＤＩ方式対応の映像機器とが混在する映像処理システムにおいて、これらの映像機器相互間で同一伝送路上にＳＤＩ方式の信号とＳＤＤＩ方式の信号とを混在させて送受信させることができるデータ受信装置、データ送受信装置、映像機器およびこれらを用いたデータ伝送システム、映像信号処理システム、並びに、これらの方法に関する。
また、本発明は、同一伝送路上を伝送されてきたＳＤＩ方式の信号とＳＤＤＩ方式の信号とを自動的に識別し、伝送用パケット単位で分離して、それぞれ対応する映像機器に供給することが可能なデータ受信装置、データ送受信装置、映像機器およびこれらを用いたデータ伝送システム、映像信号処理システム、並びに、これらの方法を提供することを目的とする。
【０００９】
【課題を解決するための手段】
本発明の第１の観点によれば、
単一の伝送路を介して伝送される、フレーム構成の異なるＳＤＩ方式の第１データおよびＳＤＤＩ方式の第２データを受信し、パケットごとに前記受信した第１データまたは第２データを識別して、異なる第１データ出力端子または第２データ出力端子に分離して出力するデータ受信装置であって、
前記ＳＤＩ方式の第１データは、映像信号の垂直方向に沿って、第１垂直ブランキング部と、第１フィールド分のデータ格納部と、第２垂直ブランキング部と、第２フィールド分のデータ格納部とを有し、第１および第２フィールド分の各ラインは、終了同期符号領域と、アンシラリデータ領域と、開始符号領域と、アクティブビデオ領域とからなり、前記終了同期符号領域には前ラインのアクティブビデオ領域の終了を示す同期符号が格納されており、前記アンシラリデータ領域には当該第１データの種別を示すデータが格納されており、前記開始符号領域には前記アクティブビデオ領域を示す同期符号が格納されており、前記アクティブビデオ領域には固定長の映像信号が格納されており、
前記ＳＤＤＩ方式の第２データは、映像信号の垂直方向に沿って各ラインが、終了同期符号領域と、アンシラリデータ領域と、開始符号領域と、ペイロード領域とからなり、前記終了同期符号領域には前ラインのペイロード領域の終了を示す同期符号が格納されており、前記アンシラリデータ領域には当該第２データの種別を示すデータが格納されており、前記開始符号領域には前記ペイロード領域を示す同期符号が格納されており、前記ペイロード領域には固定長または可変長の映像信号が格納されており、
前記第１データのアンシラリデータ領域の第１データの種別を示すデータと第２データのアンシラリデータ領域の第２データの種別を示すデータとは同じ位置であり、
当該データ受信装置は、
前記単一の伝送路を介して入力されたシリアル形式の前記第１データまたは前記第２データをパラレルデータに変換するシリアル・パラレル変換手段と、
前記変換手段で変換されたパラレル形式のデータの前記アンシラリデータ領域のデータ種別を示すデータを参照して第１または第２データのいずれかが入力されたことをパケット単位で検出するパケット識別データ検出手段と、
前記入力した第１データまたは第２データをパケット単位でバッファリングして出力するデータバッファリング手段と、
制御手段と、
第１入力端子および第１および第２出力端子を有し、前記制御手段の制御のもとで、前記データバッファリング手段から読み出したパケット単位のデータを前記第１入力端子から受け入れ、前記パケット識別データ検出手段で検出したデータ種別に応じて前記第１データ出力端子または前記第２データ出力端子から選択的に出力するデータ選択出力手段と
を有するデータ受信装置が提供される。
【００１０】
本発明の第２の観点によれば、上記データ受信装置の処理を行うデータ受信方法が提供される。
本発明の第３の観点によれば、上記データ受信装置を有する映像機器が提供される。
本発明の第４の観点によれば、上記映像機器が行う映像処理方法が提供される。
【００１１】
本発明の第５の観点によれば、
単一のデータ伝送経路を介して接続されるデータ送信装置とデータ受信装置とを有し、当該送信装置から前記単一の伝送路を介して当該データ受信装置にフレーム構成の異なるＳＤＩ方式の第１データおよびＳＤＤＩ方式の第２データを伝送し、当該データ受信装置においてパケットごとに前記受信した第１データまたは第２データを識別して異なる第１データ出力端子または第２データ出力端子に分離して出力する、データ送受信装置であって、
前記ＳＤＩ方式の第１データは、映像信号の垂直方向に沿って、第１垂直ブランキング部と、第１フィールド分のデータ格納部と、第２垂直ブランキング部と、第２フィールド分のデータ格納部とを有し、第１および第２フィールド分の各ラインは、終了同期符号領域と、アンシラリデータ領域と、開始符号領域と、アクティブビデオ領域とからなり、前記終了同期符号領域には前ラインのアクティブビデオ領域の終了を示す同期符号が格納されており、前記アンシラリデータ領域には当該第１データの種別を示すデータが格納されており、前記開始符号領域には前記アクティブビデオ領域を示す同期符号が格納されており、前記アクティブビデオ領域には固定長の映像信号が格納されており、
前記ＳＤＤＩ方式の第２データは、映像信号の垂直方向に沿って各ラインが、終了同期符号領域と、アンシラリデータ領域と、開始符号領域と、ペイロード領域とからなり、前記終了同期符号領域には前ラインのペイロード領域の終了を示す同期符号が格納されており、前記アンシラリデータ領域には当該第２データの種別を示すデータが格納されており、前記開始符号領域には前記ペイロード領域を示す同期符号が格納されており、前記ペイロード領域には固定長または可変長の映像信号が格納されており、
前記第１データのアンシラリデータ領域の第１データの種別を示すデータと第２データのアンシラリデータ領域の第２データの種別を示すデータとは同じ位置であり、
当該送信装置は、
設定データに基づいて、パラレル形式の前記第１のデータまたはパラレル形式の前記第２のデータのいずれかを選択して入力するデータ入力選択手段と、
該データ入力選択手段からの出力データをバッファリングした保持する第１バッファリング手段と、
該第１バッファリング手段に保持したデータをシリアルデータに変換して前記単一の伝送路を介して前記データ受信装置に送出するデータ送出手段と、
前記データ受信装置から送出される同期信号に基づいて前記データ入力選択手段、前記第１バッファリング手段、前記データ送出手段の動作タイミングを制御する第１制御手段と
を有し、
当該データ受信装置は、
前記単一の伝送路を介して入力されたシリアル形式の前記第１データまたは前記第２データをパラレルデータに変換するシリアル・パラレル変換手段と、
前記シリアル・パラレル変換手段で変換されたパラレル形式のデータの前記アンシラリデータ領域のデータ種別を示すデータを参照して第１または第２データのいずれかが入力されたことをパケット単位で検出するパケット識別データ検出手段と、
前記入力された第１データまたは第２データをパケット単位でバッファリングして出力する第２バッファリング手段と、
制御手段と、
第１入力端子および第１および第２出力端子を有し、前記制御手段の制御のもとで、前記データバッファリング手段から読み出したパケット単位のデータを前記第１入力端子から受け入れ、前記パケット識別データ検出手段で検出したデータ種別に応じて前記第１データ出力端子または前記第２データ出力端子から選択的に出力するデータ選択出力手段と、
前記データ送信装置に前記同期信号を送出する同期信号送出手段と
を有する、
データ送受信装置が提供される。
【００１２】
本発明の第６の観点によれば、上記データ送受信装置が行うデータ受信方法が提供される。
本発明の第７の観点によれば、上記データ送受信装置を有する映像機器が提供される。
本発明の第８の観点によれば、上記映像機器が行う映像信号方法が提供される。
【００１３】
本発明の第９の観点によれば、
単一のデータ伝送経路を介して接続される１対の映像機器を有し、当該一方の映像機器から前記単一の伝送路を介して他方の映像機器にフレーム構成の異なるＳＤＩ方式の第１データおよびＳＤＤＩ方式の第２データを伝送し、他方の映像機器においてパケットごとに前記受信した第１データまたは第２データを識別して異なる第１データ出力端子または第２データ出力端子に分離して出力する、映像信号処理システムであって、
前記ＳＤＩ方式の第１データは、映像信号の垂直方向に沿って、第１垂直ブランキング部と、第１フィールド分のデータ格納部と、第２垂直ブランキング部と、第２フィールド分のデータ格納部とを有し、第１および第２フィールド分の各ラインは、終了同期符号領域と、アンシラリデータ領域と、開始符号領域と、アクティブビデオ領域とからなり、前記終了同期符号領域には前ラインのアクティブビデオ領域の終了を示す同期符号が格納されており、前記アンシラリデータ領域には当該第１データの種別を示すデータが格納されており、前記開始符号領域には前記アクティブビデオ領域を示す同期符号が格納されており、前記アクティブビデオ領域には固定長の映像信号が格納されており、
前記ＳＤＤＩ方式の第２データは、映像信号の垂直方向に沿って各ラインが、終了同期符号領域と、アンシラリデータ領域と、開始符号領域と、ペイロード領域とからなり、前記終了同期符号領域には前ラインのペイロード領域の終了を示す同期符号が格納されており、前記アンシラリデータ領域には当該第２データの種別を示すデータが格納されており、前記開始符号領域には前記ペイロード領域を示す同期符号が格納されており、前記ペイロード領域には固定長または可変長の映像信号が格納されており、
前記第１データのアンシラリデータ領域の第１データの種別を示すデータと第２データのアンシラリデータ領域の第２データの種別を示すデータとは同じ位置であり、
前記各映像機器は、
送信部と、
受信部と、
第１および第２の入力端子および第１および第２の出力端子を有し、前記第２の入力端子および前記第２の出力端子は映像機器に接続されている、データ入出力選択部と、
制御手段と
を有し、
前記データ入出力選択部は、前記制御手段の制御のもとで、第１入力端子に入力されたパラレル形式の前記第１データまたはパラレル形式の前記第２データのいずれかを第１出力端子または第２出力端子に出力し、第２入力端子から入力されたデータを第２出力端子に出力するように構成されており、
前記送信部は、
前記データ入出力選択部の第１出力端子から出力されたデータをバッファリングした保持する第１バッファリング手段と、
該第１バッファリング手段に保持したデータをシリアルデータに変換して前記伝送路を介して接続される映像機器の受信部に送出するデータ送出手段と
を有し、
前記データ受信部は、
前記伝送路を介して接続される映像機器の送信部から前記第１データまたは第２データを受信してパラレル形式に変換する受信手段と、
該受信した前記第１データまたは第２データに含まれる前記データ種別を示すデータをパケット単位で識別するパケット種別データ検出手段と、
前記受信した第１データまたは第２データをバッファリングして出力する第２バッファリング手段と、
前記伝送路を介して接続される映像機器の送信部に前記同期信号を送出する同期信号送出手段と
を有し、
前記制御手段は、前記伝送路を介して接続される映像機器のデータ受信部から送出される同期信号に基づいて前記データ入出力選択部、前記受信部および前記送信部の動作タイミングを制御し、
前記データ受信部は前記第２バッファリング手段から読み出したパケットデータを、前記パケット識別データ検出手段で検出したデータ種別に応じて前記データ入出力選択部の第１データ出力端子または第２データ出力端子から前記データ種別に応じて出力する、
映像信号処理システムが提供される。
【００１４】
本発明の第１０の観点によれば、上記映像信号処理システムで行う映像信号処理方法が提供される。
【００１５】
【作用】
第２データは、たとえば、ＳＤＤＩ方式に用いられる伝送用パケットであって、この伝送用パケットの制御部分の所定の位置には、当該伝送用パケットがＳＤＤＩ方式であることを示すパケット種別データが含まれており、これを検出することによりそのパケットが第１データであることを識別することができる。また、第１データのデータ部分には、固定長データと可変長データとの混在が許される。
【００１６】
第１データは、たとえば、ＳＤＩ方式に用いられる伝送用パケットであって、第１データの制御部分には、ＳＤＤＩ方式の伝送用パケットのパケット種別データは含まれず、そのデータ部分には固定長データのみが含まれる。
受信手段は、伝送路からシリアル形式の伝送信号を受信して、例えばシリアル／パラレル変換して伝送信号を処理が容易なパラレル形式の信号に変換する。
【００１７】
パケット種別データ検出手段は、受信手段が受信してパラレル形式の信号に変換した信号において、例えば同期信号により示される位置の、たとえば、ＳＤＤＩ方式のパケット種別データを検出する。
データ選択出力手段は、たとえば、ＳＤＤＩ方式のパケット種別データを含む伝送用パケットを第２データとして第２出力端子から出力し、ＳＤＤＩ方式のパケット種別データを含まない伝送用パケットを第１データとして第１出力端子から出力してこれらを分離して出力する。
【００１８】
【実施例１】
以下、本発明の第１の実施例を説明する。
まず、本発明に係るデータ伝送システム１（図４）の説明に先立ち、図１〜図３を参照してデータ伝送システム１が受信する伝送信号の伝送方式として用いられるＳＤＩ方式およびＳＤＤＩ方式の信号フォーマットを説明する。
図１は、ＳＤＩ方式のフレーム構成等を示す図であって、（Ａ）はＳＤＩ方式のビデオ信号のフレーム構成を示す図であり、（Ｂ）はＳＤＩ方式の伝送用パケットの構成を示す図であり、（Ｃ）は伝送されるＳＤＩ方式のビデオ信号のデータ速度を示す図である。
【００１９】
ＳＤＩ方式のビデオ信号のフレームは、図１（Ａ），（Ｂ）に示すように、垂直方向に５２５（または６２５）ライン、水平方向に１ライン当たり１０ビット×１７１６（または１７２８；６２５ラインモードの場合）ワードの構造になっている。
各ラインにおいて、ラインの第１ワードから第４ワードまでの４ワードは、その前のラインのアクティブビデオ部ＡＣＶの終了を示し、水平ブランキング部とを分離する第１分離符号ＥＡＶ（ＥｎｄｏｆＡｃｔｉｖｅＶｉｄｅｏ）として用いられる。
【００２０】
第５ワードから第２７２ワードまでの２６８ワードは（または第５ワードから第２８４までの２８０ワードは）、水平ブランキング部であるが、アンシラリデータ部ＡＮＣとして補助データおよび音声データ等を含むこともできる。
第２７３から第２７６ワードまで（同じく、または、第２８４ワードから第２８８ワードまで）の４ワードは、アクティブビデオ部ＡＣＶの開始を示す第２分離符号ＳＡＶ（ＳｔａｒｔｏｆＡｃｔｉｖｅＶｉｄｅｏ）として用いられる。
第２７７ワードから第１７１６ワードまで（同じく、または、第２８８ワードから１７２８ワードまで）の１４４０ワードは、映像信号等を伝送するアクティブビデオ部ＡＣＶとして用いられる。
【００２１】
また、図１（Ａ）に示すように、垂直方向において、第１ラインから第９ラインまでの９ライン（同じく、または、第１ラインから第２４ラインまでの２４ライン）は、垂直ブランキング部ＶＢＫとして用いられる。
また、５２５ラインモードの場合のみ、第１０ラインから第１９ラインまでの１０ラインは、オプショナルブランキング部ＯＢＫとして用いられる。
第２０ラインから第２６３ラインまでの２４４ライン（同じく、または、第２５ラインから第３１２ラインまでの２８８ライン）は、第１フィールドのアクティブビデオ部ＡＣＶ1 として用いられる。第１フィールドのアクティブビデオ部ＡＣＶ1 には第１フィールドの映像信号が含まれる。
【００２２】
５２５ラインモードの場合のみ、第２６４ラインから第２７２ラインまでの９ライン（または、第３１３ラインから第３３７ラインまでの２５ライン）は、垂直ブランキング部ＶＢＫとして用いられる。
第２７３ラインから第２８２ラインまでの１０ラインは、オプショナルブランキング部ＯＢＫとして用いられる。
第２８３ラインから第５２６ラインまでの２４３ライン（同じく、または、第３３８ラインから第６２５ラインまでの２８８ライン）は、第２フィールドのアクティブビデオ部ＡＣＶ2 として用いられる。第２フィールドのアクティブビデオ部ＡＣＶ2 には第２フィールドの映像信号が含まれる。
図１（Ａ），（Ｂ）に示したフレーム構成の、１０ビットのパラレルのＳＤＩ方式のビデオ信号は、図１（Ｃ）に示すように、２７０Ｍｂｐｓのシリアル形式の伝送信号に変換されてデータ伝送装置１の各構成要素の間で送受信される。
【００２３】
以下、図２および図３を参照してＳＤＤＩ方式の信号フォーマットを説明する。
図２は、ＳＤＤＩ方式のフレーム構成等を示す図であって、（Ａ）はＳＤＤＩ方式のビデオ信号のフレーム構成を示す図であり、（Ｂ）はＳＤＤＩ方式の伝送用パケットの構成を示す図であり、（Ｃ）は伝送されるＳＤＤＩ方式のビデオ信号のデータ速度を示す図である。
【００２４】
図２（Ａ），（Ｂ）に示すように、ＳＤＤＩ方式のビデオ信号の各ラインは、ＳＤＩ方式のビデオ信号の各ラインと同様に、水平方向に１ライン当たり１０ビット×１７２４（または、１７１６）ワード、垂直方向に５２５（または、６２５）ラインで構成されており、図１に示したＳＤＩ方式の分離符号ＳＡＶ，ＥＡＶ、アンシラリデータ部ＡＮＣおよびアクティブビデオ部ＡＣＶ1 ，ＡＣＶ2 にそれぞれ相当する第１分離符号ＥＡＶ、アンシラリデータ部ＡＮＣ、第２分離符号ＳＡＶ，およびペイロード部ＰＡＤ（データ部ＤＴ）を含む。
さらに、ペイロード部ＰＡＤの最後には、アンシラリデータ部ＡＮＣの一部およびペイロード部ＰＡＤ部分の誤り検出および誤り訂正に用いられるＣＲＣ符号が付加されている。
ただし、ＳＤＤＩ方式のビデオ信号は、ＳＤＩ方式のビデオ信号と異なり、アンシラリデータ部ＡＮＣに音声データを含まず、ペイロード部分に音声データおよび映像データを含んでいる。
【００２５】
なお、図２（Ａ）に示すように、ＳＤＤＩ方式のビデオ信号のフレームには、それぞれ図１に示したＳＤＩビデオ信号の垂直ブランキング部ＶＢＫおよびオプショナルブランキング部ＯＢＫに対応する部分は含まれていない。
上述した１０ビットパラレルのＳＤＤＩ方式のビデオ信号は、図２（Ｃ）に示すように、２７０Ｍｂｐｓのシリアル形式の伝送信号に変換されてデータ伝送装置１の各構成要素の間で送受信される。
【００２６】
図３は、図２に示したＳＤＤＩ方式の伝送用パケットのアンシラリデータ部ＡＮＣのヘッダ部分に含まれるデータを示す図である。
図３（Ａ），（Ｂ）に示すように、ＳＤＤＩ方式の伝送用パケットのアンシラリデータ部ＡＮＣは、ヘッダデータＨＥＡＤＥＲを含み、ヘッダデータＨＥＡＤＥＲは、先頭に位置している３ワードのヘッダフラグ（０００ｈ，３ＦＦｈ，３ＦＦｈ）、１ワードのデータＩＤ（ＤＡＴＡＩＤ）、補助データ領域ＡＵＸ、宛て先デバイスアドレス（ＤＥＳＴＩＮＡＴＩＯＮＤＥＶＩＣＥＡＤＤＲＥＳＳ）、ソースデバイスアドレス（ＳＯＵＲＣＥＤＥＶＩＣＥＡＤＤＲＥＳＳ）およびチェックサム（ＣＨＥＣＫＳＵＭ）の各データを含んでいる。
上述のヘッダデータＨＥＡＤＥＲの内、ＤＡＴＡＩＤは、その伝送用パケットがＳＤＤＩ方式の伝送用パケットであるか（０１ｈ）、ＳＤＩ用伝送用パケットであるか（００ｈ）を示し、チェックサムは、そのフレームのデータのチェックサムによる誤り検出に用いられる。
宛て先デバイスアドレスおよびソースデバイスアドレスは、その伝送用パケットが伝送される宛て先の装置、および、その伝送用パケットを送出した装置の識別にそれぞれ用いられるデータである。
【００２７】第１パラグラフ削除
また、ＳＤＩ方式のビデオ信号とＳＤＤＩ方式のビデオ信号の各ラインのデータ長、フレーム構成およびデータ伝送速度は同じにし、さらに、ＳＤＩ方式の伝送用パケットとＳＤＤＩ方式の伝送用パケットとに共通性を持たせることにより、送信装置１０および受信装置２０においては、これらを同等のデータとして取り扱うことができる。
【００２８】
ＳＤＤＩ方式の伝送用パケットのヘッダには、ブロックタイプデータ等がさらに含まれており、このブロックタイプデータは、ビデオデータ部ＤＴが含むデータの種別を示す。例えば、ビデオデータ部およびオーディオデータ部に含まれているビデオ信号が圧縮されている場合、その圧縮方法（ＭＰＥＧ等）、ビデオ信号が圧縮されていない場合にはその旨、あるいは、ペイロード部ＰＡＤにコンピュータ用のデータが含まれている場合にはその旨等を示す。
【００２９】
以下、ＳＤＩ方式の信号とＳＤＤＩ方式の信号とを同一伝送路を用いて伝送するデータ伝送システム１の構成および動作を説明する。
図４は、第１の実施例における本発明に係るデータ伝送システム１の構成を示す図である。
図４に示すように、データ伝送システム１は送信装置１０と受信装置２０とから構成されている。
送信装置１０は、セレクタ回路（ＳＥＬ）１００、ＦＩＦＯ１０２，１２２、パラレル／シリアル変換回路（Ｐ／Ｓ変換回路）１０４、制御回路（ＣＰＵ）１１０およびシリアル／パラレル変換回路（Ｓ／Ｐ変換回路）１２０から構成されている。
受信装置２０は、Ｓ／Ｐ変換回路２００、パケット種別データ検出回路（ＤＥＴ）２０２、ＦＩＦＯ２０４，２２０、セレクタ回路（ＳＥＬ）２０６、制御回路（ＣＰＵ）２１０およびＰ／Ｓ変換回路２２２から構成されている。
【００３０】
制御回路１１０は、送信装置１０に接続される映像機器等の外部から入力される設定データに従って、セレクタ回路１００等、送信装置１０の各部分を制御する。
セレクタ回路１００は、制御回路１１０の制御に従って、送信装置１０の外部から入力されるＳＤＩ方式の入力データ（ＳＤＩデータ）またはＳＤＤＩ方式の入力データ（ＳＤＤＩデータ）を選択し、１０ビットパラレル形式の送信信号としてＦＩＦＯ１０２に対して出力する。
ＦＩＦＯ１０２は、セレクタ回路１００で選択されて出力されたＳＤＩ方式のデータまたはＳＤＤＩ方式のデータのいずれかの送信信号をバッファリングしてＰ／Ｓ変換回路１０４に対して出力する。
Ｐ／Ｓ変換回路１０４は、１０ビットパラレル形式の送信信号（図１（Ｂ），図２（Ｂ））を１ビットシリアル形式の伝送信号（図１（Ｃ），図２（Ｃ））に変換して共通の伝送路（ＳＤＩ／ＳＤＤＩ伝送路）上に送信する。
【００３１】
Ｓ／Ｐ変換回路２００は、送信装置１０から伝送されてきた伝送信号を受信し、１０ビットパラレル形式の受信信号に変換してパケット種別データ検出回路２０２に対して出力する。
パケット種別データ検出回路２０２は、受信装置２０における受信信号の伝送用パケットの図３（Ｂ）に示すアンシラリデータ部ＡＮＣに格納されるヘッダデータＨＥＡＤＥＲのＤＡＴＡＩＤの位置の内容が、その伝送用パケットがＳＤＤＩ方式のものであることを示すパケット識別データ０１ｈであるか否かを検出し、検出結果を制御回路２１０に対して出力する。また、パケット種別データ検出回路２０２は、受信信号をそのままＦＩＦＯ２０４に対して出力する。さらに、例えばパケット種別データ検出回路２０２が、タイプデータの内容を判断してタイプ間の違いを検出可能に構成し、タイプ間で異なる制御を行うようにすることも可能である。
制御回路２１０は、パケット種別データ検出回路２０２における検出結果等に基づいて、セレクタ回路２０６等の受信装置２０の各部分を制御する。
【００３２】
ＦＩＦＯ２０４は、受信装置２０における受信信号をバッファリングしてセレクタ回路２０６に対して出力する。
セレクタ回路２０６は、制御回路２１０の制御に従って、パケット種別データ検出回路２０２が、その伝送用パケットがＳＤＤＩ方式のものであることを示すパケット識別データを検出しなかった場合には、受信装置２０における受信信号を第１出力端子ａ側からＳＤＩデータとして出力し、その伝送用パケットがＳＤＤＩ方式のものであることを示すパケット識別データを検出した場合には、受信装置２０における受信信号を第２出力端子ｂ側からＳＤＤＩデータとして出力する。
【００３３】
また、受信装置２０は、ＦＩＦＯ２２０およびＰ／Ｓ変換回路２２２により同期信号（ＲＥＦ）を送信装置１０に対して送出する。送信装置１０は、Ｓ／Ｐ変換回路１２０およびＦＩＦＯ１２２により同期信号を再生し、制御回路１１０が同期信号を用いて送信装置１０の内部処理等に用いる。この同期信号は、例えば伝送用パケットの送信タイミング等を規定する。
なお、データ伝送システム１において、受信装置２０が本発明に係るデータ受信装置に相当し、Ｓ／Ｐ変換回路２００が本発明に係る受信手段に相当し、パケット種別データ検出回路２０２が本発明に係るパケット種別データ検出手段に相当し、セレクタ回路２０６が本発明に係るパケット分離手段に相当する。
【００３４】
以下、データ伝送システム１の動作を説明する。
送信装置１０に、それぞれＳＤＩ方式またはＳＤＤＩ方式に対応する映像機器から入力された１０ビットパラレル形式のＳＤＩデータまたはＳＤＤＩデータは、送信装置１０の外部から入力された設定データに従って制御回路１１０の制御のもとでセレクタ回路１００により選択され、送信信号としてＦＩＦＯ１０２に入力される。
ＦＩＦＯ１０２は、セレクタ回路１００から出力される送信信号をバッファリングし、同期信号に同期したタイミングでＰ／Ｓ変換回路１０４に対して出力する。
Ｐ／Ｓ変換回路１０４は、ＦＩＦＯ１０２から出力される送信信号を１ビットシリアル形式の伝送信号に変換して単一の伝送路を介して受信装置２０に対して伝送する。
【００３５】
受信装置２０のＳ／Ｐ変換回路２００は、送信装置１０からの伝送信号を受信して１０ビットパラレル形式の受信信号に変換してパケット種別データ検出回路２０２に対して出力する。
パケット種別データ検出回路２０２は、Ｓ／Ｐ変換回路２００で受信し１０ビットパラレル形式の信号に変換した受信信号から伝送用パケットを検出し、図３（Ｂ）に示すアンシラリデータ部ＡＮＣのヘッダデータＨＥＡＤＥＲのＤＡＴＡＩＤの位置の内容を検出し、その検出結果を制御回路２１０に対して出力する。
ＦＩＦＯ２０４は、セレクタ回路２０６でＳＤＩ方式の信号とＳＤＤＩ方式の信号とを分離して出力する際に、伝送用パケットの頭切れが生じないようにバッファリングしセレクタ回路２０６に対して出力する。
セレクタ回路２０６は、伝送用パケットの図３（Ｂ）に示すアンシラリデータ部ＡＮＣのヘッダデータＨＥＡＤＥＲのＤＡＴＡＩＤの内容、すなわち、ＳＤＤＩ方式か否かに応じた制御回路２１０の制御に従って、ＳＤＩデータとＳＤＤＩデータを分離して第１または第２の出力端子ａ、ｂから出力する。
【００３６】
データ伝送システム１によれば、ＳＤＩデータとＳＤＤＩデータとを同一伝送路上で伝送することができる。従って、図７を参照して例示した従来例として示したデータ伝送装置８において、送信装置および受信装置においてそれぞれ、２組必要であったＦＩＦＯ８１２、８２２、ＦＩＦＯ８４０、８５０、Ｐ／Ｓ変換回路８１０、８２０およびＳ／Ｐ変換回路８４２、８５２を１組に減らすことができるので、装置コストが低い。
また、データ伝送システム１によれば、従来２本必要であった伝送路を１本に減らすことができるので、伝送路のコストを減らすことができ、敷設工事も簡単になる。
また、データ伝送システム１によれば、受信装置２０側において自動的にＳＤＩ方式とＳＤＤＩ方式の伝送用パケットを識別してこれらを分離可能なので、ＳＤＩ方式対応の映像機器とＳＤＤＩ方式の映像機器とを同一の映像処理システム内に混在させやすい。
【００３７】
【実施例２】
以下、本発明の第２の実施例を説明する。
図５は、第２の実施例における本発明に係るデータ伝送システム３の構成を示す図である。
図６は、図５に示したデータ送受信装置３２ａ〜３２ｄの構成を示す図である。
図５に示すように、本発明に係るデータ伝送システム３は、４個のデータ送受信装置３２ａ〜３２ｄから構成されており、データ送受信装置３２ａ〜３２ｄ相互間でＳＤＩ方式の信号とＳＤＤＩ方式の信号とを同一伝送路上に混在させて伝送するように構成されている。
【００３８】
データ送受信装置３２ａ〜３２ｄは同一の構成であり、同一のおよび動作を行う。
図６に示すように、データ送受信装置３２ａ〜３２ｄ（以下、これらを別個に特定しない場合には、単にデータ送受信装置３２と記す）は、それぞれＳ／Ｐ変換回路３２０，３５０、Ｐ／Ｓ変換回路３４４，３６２、パケット種別データ検出回路３２２、ＦＩＦＯ３２４，３４０，３５２，３６０、制御回路（ＣＰＵ）３３０およびスイッチネットワーク３３２から構成されており、それぞれ他のデータ送受信装置３２から送られてきた伝送信号から、それぞれに接続された映像機器に応じてＳＤＩデータまたはＳＤＤＩデータを分離して信号ＶＯＵＴａ〜ＶＯＵＴｄとして供給し、あるいは、他のデータ送受信装置３２に対して映像機器からの入力信号ＶＩＮａ〜ＶＩＮｄを送信し、あるいは、伝送信号を中継する。
【００３９】
Ｓ／Ｐ変換回路３２０は、図４に示したＳ／Ｐ変換回路２００と同様の動作を行い、他のデータ送受信装置３２から伝送されてきた伝送信号を受信し、パラレル形式の受信信号に変換してパケット種別データ検出回路３２２に対して出力する。
パケット種別データ検出回路３２２は、図４に図解したパケット種別データ検出回路２０２と同様の動作を行い、受信信号のパケット識別データを検出し、検出結果を制御回路３３０に対して、受信信号をそのままＦＩＦＯ３２４に対して出力する。
【００４０】
ＦＩＦＯ３２４は、図４に図解したＦＩＦＯ２０４と同様の動作を行い、受信信号をバッファリングしてスイッチネットワーク３３２に対して出力する。
ＦＩＦＯ３４０は、図４に図解したＦＩＦＯ１０２と同様の動作を行い、スイッチネットワーク３３２から入力された送信信号をバッファリングしてＰ／Ｓ変換回路３４４に対して出力する。
制御回路３３０は、図４に図解した制御回路１１０および制御回路２１０と同様の動作を行い、データ送受信装置３２それぞれに接続される映像機器等の外部から入力される設定データに従って、スイッチネットワーク３３２等の各部分を制御する。
【００４１】
Ｓ／Ｐ変換回路３５０およびＦＩＦＯ３５２は、図４に図解したＳ／Ｐ変換回路１２０およびＦＩＦＯ１２２と同様の動作を行い、他のデータ送受信装置３２からの同期信号を受信する。
ＦＩＦＯ３６０およびＰ／Ｓ変換回路３６２は、図４に図解したＦＩＦＯ２２０およびＰ／Ｓ変換回路２２２と同様の動作を行い、他のデータ送受信装置３２に対して同期信号を送信する。
【００４２】
スイッチネットワーク３３２は、入力端子ａ，ｃと出力端子ｂ，ｄ間の信号切替えを行う。具体的には、スイッチネットワーク３３２は、制御回路３３０の制御に従って、映像機器から入力端子ｃに入力されたＳＤＩ方式またはＳＤＤＩ方式の入力信号ＶＩＮａ〜ＶＩＮｄを出力端子ｂから送信信号として出力し、入力端子ａから入力された受信信号からＳＤＩデータまたはＳＤＤＩデータを分離して出力端子ｄから出力信号ＶＯＵＴａ〜ＶＯＵＴｄとして出力し、さらに、入力端子ａから入力された伝送信号をそのまま出力端子ｂから送信信号として出力する。
【００４３】
以下、図５および図６に示したデータ伝送システム３およびデータ送受信装置３２の動作を説明する。
データ伝送システム３においては、伝送信号はデータ送受信装置３２ａからデータ送受信装置３２ｂへ、データ送受信装置３２ｂからデータ送受信装置３２ｃへといったように伝送される。
データ送受信装置３２ａ〜３２ｄは、それぞれ接続された映像機器に対応するＳＤＩデータまたはＳＤＤＩデータを図４に示した受信装置２０と同様に伝送信号から取り出して供給するとともに、取り出さなかった伝送信号を次のデータ送受信装置３２に対して中継する。
また、データ送受信装置３２ａ〜３２ｄの間では、図５に示すように同期信号ＲＥＦの送受信も行われる。
【００４４】
データ伝送システム３をこのように構成することにより、ＳＤＩ方式対応の映像機器とＳＤＤＩ方式対応の映像機器とを混在させて大規模な映像処理システムを容易に構成することができる上、第１の実施例に示したデータ伝送システム１と同様な効果を得ることができる。
【００４５】
なお、データ送受信装置３２は４台に限らず、任意の台数でデータ伝送システム３を構成することができる。また、接続関係も図５に示したものに限らず、例えばデータ送受信装置３２が複数の伝送路を介してデータの送受信が可能なように構成して、データ送受信装置３２ａ，３２ｃおよびデータ送受信装置３２ｂ，３２ｄ間を直接接続する伝送路を設けてもよい。
データ送受信装置３２に、図３（Ｂ）に図解したアンシラリデータ部ＡＮＣに格納されるヘッダデータＨＥＡＤＥＲのうちの宛て先デバイスアドレス（ＤＥＳＴＩＮＡＴＩＯＮＤＥＶＩＣＥＡＤＤＲＥＳＳ）を検出する機能を追加することにより、任意のデータを所望の機器に対して伝送することができる映像処理システムを実現することも可能である。
また、このような機能を追加するとともに、データ送受信装置３２に交換機能を付加し、さらに複雑なシステムを構成可能にしてもよい。
【００４６】
以上、本発明のデータ受信装置、および、データ送受信装置、および、これらの方法について実施の形態を述べたが、上述した構成および機能を映像機器に適用することができる。
また上述した方法を映像機器に適用する映像信号処理方法も提供できる。
【００４７】
【発明の効果】
以上述べたように本発明に係るデータ受信装置、データ送受信装置、映像機器、およびこれらの方法によれば、ＳＤＩ方式対応の映像機器とＳＤＤＩ方式対応の映像機器とが混在する映像処理システムにおいて、これらの映像機器相互間で同一伝送路上にＳＤＩ方式の信号とＳＤＤＩ方式の信号とを混在させて送受信させることができる。
【００４８】
また、本発明に係るデータ受信装置、データ送受信装置、映像機器、およびこれらの方法によれば、同一伝送路上を伝送されてきたＳＤＩ方式の信号とＳＤＤＩ方式の信号とを自動的に識別し、伝送用パケット単位で分離して、それぞれ対応する映像機器に供給することが可能である。
【図面の簡単な説明】
【図１】ＳＤＩ方式のフレーム構成等を示す図であって、（Ａ）はＳＤＩ方式のビデオ信号のフレーム構成を示す図であり、（Ｂ）はＳＤＩ方式の伝送用パケットの構成を示す図であり、（Ｃ）は伝送されるＳＤＩ方式のビデオ信号のデータ速度を示す図である。
【図２】ＳＤＤＩ方式のフレーム構成等を示す図であって、（Ａ）はＳＤＤＩ方式のビデオ信号のフレーム構成を示す図であり、（Ｂ）はＳＤＤＩ方式の伝送用パケットの構成を示す図であり、（Ｃ）は伝送されるＳＤＤＩ方式のビデオ信号のデータ速度を示す図である。
【図３】図２に示したＳＤＤＩ方式の伝送用パケットのアンシラリデータ部ＡＮＣに含まれるデータを示す図である。
【図４】第１の実施例における本発明に係るデータ伝送システムの構成を示す図である。
【図５】第２の実施例における本発明に係るデータ伝送システムの構成を示す図である。
【図６】図５に示したデータ送受信装置の構成を示す図である。
【図７】従来のデータ伝送装置の構成を示す図である。
【符号の説明】
１，３…データ伝送システム、１０…送信装置、２０…受信装置、３２，３２ａ〜３２ｄ…データ送受信装置、１００，２０６…セレクタ回路、１０２，１２２，２０４，２２０，３２４，３４０，３５２，３６０…ＦＩＦＯ、１０４，２２２，３４４，３６２…Ｐ／Ｓ変換回路、１２０，２００，３２０，３５０…Ｓ／Ｐ変換回路、２０２，３３２…パケット種別データ検出回路、１１０，２１０，３３０…制御回路、３３２…スイッチネットワーク[0001]
[Industrial applications]
The present invention relates to a data receiving apparatus, a data transmitting / receiving apparatus, a video device, and a data transmission system using the same, which are used for transmitting a plurality of transmission packets on the same transmission path., Video signal processing system, andRegarding these methods.
[0002]
[Prior art]
2. Description of the Related Art A serial digital interface (SDI) system has been conventionally used as a system for transmitting a digital video signal (hereinafter simply referred to as a video signal) or the like between devices used for video editing or the like. The signal format of the SDI system is standardized as SMPTE-295M of SMPTE (Society of Motion Picture and Television Engineerings) as a standard of digital video and audio signals.
The SDI system is used for transmitting digital video signals of the D1 system and the D2 system, and its transmission speed is as high as 270 MHz.
[0003]
However, the SDI method is limited to a signal that can be transmitted only for one channel of a video signal and only eight channels for a baseband audio signal. Not always suitable for responding to channeling needs.
For this reason, an SDDI scheme that is more compatible with multimedia has been proposed so that variable-length video signal data can be transmitted while having considerable compatibility with the SDI scheme.
[0004]
In order to transmit the SDI signal and the SDDI signal, the data transmission device 8 shown in FIG. 7 may be used.
The data transmission device 8 includes a data transmission device 800 and a data reception device 830. The data transmitting apparatus 800 converts the input SDI signal (SDI data) and SDDI data (SDDI data) into FIFOs 812 and 822, respectively.And saveParallel / serial conversion circuits (P / S conversion circuits) 810 and 820 convert the data into serial data, andBetween the SDI transmission path and the SDDI transmission pathIt is configured to transmit to the data receiving device 830 using separate transmission paths.
[0005]
Also, the data receiving device 830 isBetween the SDI transmission path and the SDDI transmission pathThese have been sent on separate transmission linesSerial data formatThe signals are converted into serial / parallel conversion circuits (S / P conversion circuits) 842 and 852, respectively.To convert to parallel data format,FIFO 840, 850And input to the data transmission device 800.Separated into the original SDI data and SDDI data,Data transmission device 8It is configured to output to the outside.
[0006]
The synchronization signal that defines the timing of signal transmission between the data transmitting device 800 and the data receiving device 830 isData receiving device 830FIFO 832 and P / S conversion circuit 834 from the sideWhat are SDI and SDDI transmission lines?The data is transmitted to the data transmitting apparatus 800 using another transmission path. The original synchronization signal is reproduced by the S / P conversion circuit 802 and the FIFO 804,The data transmission device 800 transmits the reproduced synchronization signal to the data transmission device 800Used for internal processing.
[0007]
[Problems to be solved by the invention]
Here, there is a demand for transmitting the SDI signal and the SDDI signal using the same transmission line for the reason of reducing the number of transmission lines and simplifying the laying work of the transmission line. However, while the SDI signal contains only fixed-length data, the SDDI signal sometimes contains variable-length data in addition to fixed-length data. Therefore, if these signals are transmitted using the same transmission path,In the data receiving device ofIt is necessary to separate the signals of the SDI system and the signals of the SDDI system and supply them to a video editing device or the like corresponding to the signal of each system.
[0008]
SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems of the related art, and in a video processing system in which video equipment compatible with the SDI system and video equipment compatible with the SDDI system coexist, the same video equipment is used. A data receiving apparatus, a data transmitting / receiving apparatus, which can mix and transmit an SDI signal and an SDDI signal on a transmission path;Video equipmentAnd data transmission system using them, Video signal processing system, and these methodsAbout.
Further, the present invention can automatically identify an SDI signal and an SDDI signal transmitted on the same transmission path, separate them in transmission packet units, and supply them to corresponding video equipment. Possible data receiving device, data transmitting and receiving device,Video equipmentAnd data transmission system using them, Video signal processing system, and these methodsThe purpose is to provide.
[0009]
[Means for Solving the Problems]
According to a first aspect of the present invention,
Receiving the first data of the SDI system and the second data of the SDDI system having different frame configurations transmitted through a single transmission path, and identifying the received first data or second data for each packet; A data receiving device for separating and outputting to a different first data output terminal or a different second data output terminal,
The first data of the SDI system includes a first vertical blanking unit, a data storage unit for the first field, a second vertical blanking unit, and a data for the second field along the vertical direction of the video signal. Each of the lines for the first and second fields includes an end synchronization code area, an ancillary data area, a start code area, and an active video area. A synchronization code indicating the end of the active video area of the previous line is stored, the ancillary data area stores data indicating the type of the first data, and the start code area includes the active video area. Are stored, and a fixed-length video signal is stored in the active video area.
In the second data of the SDDI system, each line along the vertical direction of the video signal includes an end synchronization code area, an ancillary data area, a start code area, and a payload area. Stores a synchronization code indicating the end of the payload area of the previous line, stores data indicating the type of the second data in the ancillary data area, and stores the payload area in the start code area. A synchronization code is stored in the payload area, and a fixed-length or variable-length video signal is stored in the payload area.
The data indicating the type of the first data in the ancillary data area of the first data is the same as the data indicating the type of the second data in the ancillary data area of the second data,
The data receiving device,
Serial-parallel conversion means for converting the first data or the second data in a serial format input through the single transmission path into parallel data;
Referring to the data indicating the data type of the ancillary data area of the parallel format data converted by the conversion means, it is determined that one of the first and second data has been input. Packet identification data detection means for detecting in packet units,
Data buffering means for buffering and outputting the input first data or second data in packet units;
Control means;
A first input terminal and first and second output terminals for receiving packet-based data read from the data buffering unit from the first input terminal under the control of the control unit; Data selection output means for selectively outputting from the first data output terminal or the second data output terminal according to the data type detected by the data detection means;
Is provided.
[0010]
According to a second aspect of the present invention, there is provided a data receiving method for performing the processing of the data receiving device.
According to a third aspect of the present invention, there is provided a video device having the above data receiving device.
According to a fourth aspect of the present invention, there is provided a video processing method performed by the video device.
[0011]
According to a fifth aspect of the present invention,
A data transmission device and a data reception device connected via a single data transmission path, and the SDI system having a different frame configuration from the transmission device to the data reception device via the single transmission line. 1 data and 2nd data of the SDDI system are transmitted, and the received 1st data or 2nd data is identified for each packet in the data receiving device and separated into different 1st data output terminals or 2nd data output terminals. A data transmitting and receiving device,
The first data of the SDI system includes a first vertical blanking unit, a data storage unit for the first field, a second vertical blanking unit, and a data for the second field along the vertical direction of the video signal. Each of the lines for the first and second fields includes an end synchronization code area, an ancillary data area, a start code area, and an active video area. A synchronization code indicating the end of the active video area of the previous line is stored, the ancillary data area stores data indicating the type of the first data, and the start code area includes the active video area. Are stored, and a fixed-length video signal is stored in the active video area.
In the second data of the SDDI system, each line along the vertical direction of the video signal includes an end synchronization code area, an ancillary data area, a start code area, and a payload area. Stores a synchronization code indicating the end of the payload area of the previous line, stores data indicating the type of the second data in the ancillary data area, and stores the payload area in the start code area. A synchronization code is stored in the payload area, and a fixed-length or variable-length video signal is stored in the payload area.
The data indicating the type of the first data in the ancillary data area of the first data is the same as the data indicating the type of the second data in the ancillary data area of the second data,
The transmitting device,
Data input selection means for selecting and inputting either the first data in the parallel format or the second data in the parallel format based on the setting data;
First buffering means for buffering and holding output data from the data input selecting means;
Data sending means for converting the data held in the first buffering means into serial data and sending the serial data to the data receiving device via the single transmission path;
A first control unit for controlling operation timings of the data input selection unit, the first buffering unit, and the data transmission unit based on a synchronization signal transmitted from the data reception device;
Has,
The data receiving device,
Serial-parallel conversion means for converting the first data or the second data in a serial format input through the single transmission path into parallel data;
Reference is made to data indicating the data type of the ancillary data area of the parallel format data converted by the serial / parallel conversion means, and it is detected on a packet basis that either the first or second data has been input. Packet identification data detection means;
Second buffering means for buffering and outputting the input first data or second data in packet units;
Control means;
A first input terminal and first and second output terminals, receiving data in packet units read from the data buffering means from the first input terminal under the control of the control means; Data selection output means for selectively outputting from the first data output terminal or the second data output terminal according to the data type detected by the data detection means;
Synchronization signal sending means for sending the synchronization signal to the data transmission device;
Having,
A data transmitting / receiving device is provided.
[0012]
According to a sixth aspect of the present invention, there is provided a data receiving method performed by the data transmitting / receiving apparatus.
According to a seventh aspect of the present invention, there is provided a video device having the above data transmitting / receiving device.
According to an eighth aspect of the present invention, there is provided a video signal method performed by the video device.
[0013]
According to a ninth aspect of the present invention,
It has a pair of video devices connected via a single data transmission path, and the first video device of the SDI system having a different frame configuration from the one video device to the other video device via the single transmission line. The data and the second data of the SDDI system are transmitted, and the other video equipment separates the received first data or second data for each packet and separates the received first data or second data into different first data output terminals or second data output terminals. Output, a video signal processing system,
The first data of the SDI system includes a first vertical blanking unit, a data storage unit for the first field, a second vertical blanking unit, and a data for the second field along the vertical direction of the video signal. Each of the lines for the first and second fields includes an end synchronization code area, an ancillary data area, a start code area, and an active video area. A synchronization code indicating the end of the active video area of the previous line is stored, the ancillary data area stores data indicating the type of the first data, and the start code area includes the active video area. Are stored, and a fixed-length video signal is stored in the active video area.
In the second data of the SDDI system, each line along the vertical direction of the video signal includes an end synchronization code area, an ancillary data area, a start code area, and a payload area. Stores a synchronization code indicating the end of the payload area of the previous line, stores data indicating the type of the second data in the ancillary data area, and stores the payload area in the start code area. A synchronization code is stored in the payload area, and a fixed-length or variable-length video signal is stored in the payload area.
The data indicating the type of the first data in the ancillary data area of the first data is the same as the data indicating the type of the second data in the ancillary data area of the second data,
Each of the video devices,
A transmission unit;
A receiving unit,
A data input / output selection unit having first and second input terminals and first and second output terminals, wherein the second input terminal and the second output terminal are connected to a video device;
Control means and
Has,
The data input / output selection unit is configured to output either the first data in parallel format or the second data in parallel format input to the first input terminal under the control of the control means to the first output terminal or Outputting to the second output terminal, and outputting data input from the second input terminal to the second output terminal;
The transmitting unit includes:
First buffering means for buffering and holding data output from a first output terminal of the data input / output selection unit;
Data transmitting means for converting the data held in the first buffering means into serial data and transmitting the serial data to a receiving unit of a video device connected via the transmission path;
Has,
The data receiving unit,
A receiving unit that receives the first data or the second data from a transmission unit of a video device connected via the transmission path and converts the data into a parallel format;
Packet type data detection means for identifying data indicating the data type included in the received first data or second data in packet units;
Second buffering means for buffering and outputting the received first data or second data,
Synchronizing signal transmitting means for transmitting the synchronizing signal to a transmitting unit of a video device connected via the transmission path;
Has,
The control unit controls the operation timing of the data input / output selection unit, the reception unit, and the transmission unit based on a synchronization signal transmitted from a data reception unit of a video device connected via the transmission path,
The data receiving unit converts the packet data read from the second buffering unit into a first data output terminal or a second data output terminal of the data input / output selection unit according to a data type detected by the packet identification data detection unit. Output according to the data type from
An image signal processing system is provided.
[0014]
According to a tenth aspect of the present invention, there is provided a video signal processing method performed by the video signal processing system.
[0015]
[Action]
Second dataIsFor example,A packet for transmission used in the SDDI system, and a predetermined position of a control portion of the transmission packet includes packet type data indicating that the transmission packet is in the SDDI system. By doing so, it is possible to identify that the packet is the first data. In the data portion of the first data, a mixture of fixed length data and variable length data is allowed.
[0016]
First dataIsFor example,A transmission packet used for the SDI method,First dataDoes not include the packet type data of the transmission packet of the SDDI system, but includes only the fixed length data in the data portion.
The receiving means receives the serial transmission signal from the transmission path and converts the transmission signal into a parallel signal which can be easily processed by, for example, serial / parallel conversion.
[0017]
The packet type data detecting unit detects, for example, the position of the position indicated by the synchronization signal in the signal received by the receiving unit and converted into a parallel format signal.For example,The packet type data of the SDDI system is detected.
The data selection output meansFor example,A transmission packet including the packet type data of the SDDI method is used as the second data.SecondA packet for transmission that is output from the output terminal and does not include the packet type data of the SDDI methodFirst dataAsFirstThese are output from an output terminal and are separated and output.
[0018]
Embodiment 1
Hereinafter, a first embodiment of the present invention will be described.
First, prior to description of the data transmission system 1 (FIG. 4) according to the present invention, referring to FIGS.Data transmission system 1The signal formats of the SDI system and the SDDI system used as the transmission system of the transmission signal received by the STA will be described.
1A and 1B are diagrams showing a frame configuration of the SDI system and the like. FIG. 1A is a diagram showing a frame configuration of an SDI system video signal, and FIG. 1B is a diagram showing a configuration of an SDI system transmission packet. (C) is a diagram showing the data rate of the transmitted SDI video signal.
[0019]
As shown in FIGS. 1A and 1B, the frame of the SDI video signal is 525 (vertically).Or625) lines, 10 bits per line in the horizontal direction × 1716 (Or1728; 625 line mode) has a word structure.
In each line, four words from the first word to the fourth word of the line are:Before thatIndicates the end of the active video section ACV of the line and separates it from the horizontal blanking sectionFirstIt is used as a separation code EAV (End of Active Video).
[0020]
268 words from the 5th word to the 272nd wordIs (or280 words from the 5th word to the 284th wordIs), Horizontal blanking section, but the ancillary data section ANC may include auxiliary data and audio data.
From the 273rd to the 276th word (also,OrThe four words (from the 284th word to the 288th word) indicate the start of the active video section ACV.SecondIt is used as a separation code SAV (Start of Active Video).
From the 277th word to the 1716th word (also,Or1440 words (from the 288th word to 1728 words) are used as an active video unit ACV for transmitting a video signal or the like.
[0021]
Also, as shown in FIG. 1A, in the vertical direction, nine lines from a first line to a ninth line (similarly,Or24 lines from the first line to the 24th line) are used as the vertical blanking unit VBK.
Also, only in the 525-line mode, ten lines from the tenth line to the nineteenth line are used as the optional blanking unit OBK.
244 lines from line 20 to line 263 (also,OrThe 288th line from the 25th line to the 312th line) is used as the active video section ACV1 of the first field. The active video part ACV1 of the first field contains the video signal of the first field.
[0022]
Only in the case of the 525-line mode, 9 lines from line 264 to line 272 (OrLine 313 to line 337 (25 lines) are used as the vertical blanking unit VBK.
The tenth line from the 273rd line to the 282nd line is used as an optional blanking unit OBK.
243 lines from line 283 to line 526 (also,OrThe 288th line from the 338th line to the 625th line) is used as the active video section ACV2 of the second field. The active video part ACV2 of the second field contains the video signal of the second field.
In the frame configuration shown in FIGS.10 bit parallelThe SDI video signal is converted into a 270 Mbps serial transmission signal and transmitted and received between the components of the data transmission apparatus 1 as shown in FIG.
[0023]
Hereinafter, the signal format of the SDDI system will be described with reference to FIGS.
2A and 2B are diagrams illustrating a frame configuration of the SDDI system, and FIG. 2A is a diagram illustrating a frame configuration of a video signal of the SDDI system, and FIG. 2B is a diagram illustrating a configuration of a transmission packet of the SDDI system. (C) is a diagram showing the data rate of the transmitted SDDI video signal.
[0024]
As shown in FIGS. 2A and 2B, each line of the SDDI video signal is 10 bits × 1724 (10 bits per line) in the horizontal direction similarly to each line of the SDI video signal.Or1716) words, 525 verticallyOr625), and corresponds to the SDI separation codes SAV and EAV, ancillary data section ANC, and active video sections ACV1 and ACV2 shown in FIG.FirstSeparatorNo. EAV, ancillary data section ANC,Second separation code SAV, And a payload portion PAD (data portion DT).
Further, a CRC code used for error detection and error correction of a part of the ancillary data part ANC and the payload part PAD is added to the end of the payload part PAD.
However, unlike the SDI video signal, the SDDI video signal is different from the ancillary data part AN.To CIt does not include audio data, but includes audio data and video data in the payload portion.
[0025]
As shown in FIG. 2A, the frame of the SDDI video signal includes portions corresponding to the vertical blanking section VBK and the optional blanking section OBK of the SDI video signal shown in FIG. 1, respectively. Not.
Mentioned above10 bit parallelThe SDDI video signal is converted into a 270 Mbps serial transmission signal and transmitted and received between the components of the data transmission apparatus 1 as shown in FIG. 2C.
[0026]
FIG. 3 is a diagram showing data included in the header part of the ancillary data part ANC of the transmission packet of the SDDI system shown in FIG.
As shown in FIGS. 3A and 3B, the ancillary data portion ANC of the SDDI transmission packet is used.Includes the header data HEADER, and the header data HEADER isLocated on the head3Word header flags (000h, 3FFh, 3FFh), 1-word data ID (DATAID),Auxiliary data area AUX,addressdeviceAddress (DESTINATIONDEVICEADDRESS), sourcedeviceThe data includes an address (SOURCE DEVICE ADDRESS) and a checksum (CHECK SUM).
Header data described aboveHEADERAmong them, DATAID indicates whether the transmission packet is an SDDI transmission packet (01h) or an SDI transmission packet (00h), and the checksum is based on the checksum of the data of the frame. Used for error detection.
addressdeviceAddress and sourcedeviceThe address is data used to identify a destination device to which the transmission packet is transmitted and a device that has transmitted the transmission packet.
First paragraph deleted
The data length, frame configuration and data transmission speed of each line of the SDI video signal and the SDDI video signal are the same, and the SDI transmission packet and the SDDI transmission packet have commonality. By havingTransmitting device 10 and receiving device 20, These can be handled as equivalent data.
[0028]
The header of the transmission packet of the SDDI system further includes block type data and the like, and the block type data includes a video data portion.DTIndicates the type of data included in. For example, when the video signal included in the video data section and the audio data section is compressed, the compression method (MPEG or the like) is used. When the video signal is not compressed, the fact is described. If data for a computer is included, this is indicated.
[0029]
Hereinafter, the configuration and operation of the data transmission system 1 that transmits an SDI signal and an SDDI signal using the same transmission path will be described.
FIG. 4 is a diagram showing the configuration of the data transmission system 1 according to the first embodiment of the present invention.
As shown in FIG. 4, the data transmission system 1 includes a transmitting device 10 and a receiving device 20.You.
The transmission device 10 includes a selector circuit (SEL) 100, FIFOs 102 and 122, a parallel / serial conversion circuit (P / S conversion circuit) 104, a control circuit (CPU) 110, and a serial / parallel conversion circuit (S / P conversion circuit) 120. Composed ofing.
The receiving device 20 includes an S / P conversion circuit 200, a packet type data detection circuit (DET) 202, FIFOs 204 and 220, a selector circuit (SEL) 206, a control circuit (CPU) 210, and a P / S conversion circuit 222.Have been.
[0030]
The control circuit 110 controls each part of the transmission device 10, such as the selector circuit 100, according to setting data input from outside such as a video device connected to the transmission device 10.
The selector circuit 100 operates according to the control of the control circuit 110.Transmission device 10SDI input data (SDI data) or SDDI input data (SDDI data) input from outside is selected and output to the FIFO 102 as a 10-bit parallel transmission signal.
FIFO 102 isEither SDI data or SDDI data selected and output by the selector circuit 100The transmission signal is buffered and output to the P / S conversion circuit 104.
The P / S conversion circuit 104 converts the 10-bit parallel transmission signals (FIGS. 1B and 2B) into 1-bit serial transmission signals (FIGS. 1C and 2C). ConvertCommonTransmission line (SDI / SDDITransmission line) To send on.
[0031]
The S / P conversion circuit 200 receives the transmission signal transmitted from the transmission device 10, converts the transmission signal into a 10-bit parallel reception signal, and outputs it to the packet type data detection circuit 202.
The packet type data detection circuit 202In the receiving device 20FIG. 3B shows a packet for transmitting a received signal.Of header data HEADER stored in ancillary data section ANCIt detects whether or not the content of the position of DATAID is packet identification data 01h indicating that the transmission packet is of the SDDI system, and outputs the detection result to control circuit 210. Further, the packet type data detection circuit 202 outputs the received signal to the FIFO 204 as it is. Further, for example, the packet type data detection circuit 202 determines the content of the type data andConfigured to detect differences between types and control differently between typesIt is also possible to carry out.
The control circuit 210 controls each part of the receiving device 20 such as the selector circuit 206 based on the detection result of the packet type data detection circuit 202 and the like.
[0032]
FIFO 204In the receiving device 20The received signal is buffered and output to the selector circuit 206.
When the packet type data detection circuit 202 does not detect the packet identification data indicating that the transmission packet is of the SDDI system according to the control of the control circuit 210,In the receiving device 20Received signalFirstWhen the packet is output as SDI data from the output terminal a side and packet identification data indicating that the transmission packet is of the SDDI type is detected,In the receiving device 20Received signalSecondOutput from the output terminal b side as SDDI data.
[0033]
Further, the receiving device 20 sends out a synchronization signal (REF) to the transmitting device 10 by the FIFO 220 and the P / S conversion circuit 222. The transmission device 10 reproduces a synchronization signal by the S / P conversion circuit 120 and the FIFO 122., The control circuit 110 uses the synchronization signal toUsed for internal processing. The synchronization signal defines, for example, the transmission timing of a transmission packet.
In the data transmission system 1, the receiving device 20 corresponds to the data receiving device according to the present invention, the S / P conversion circuit 200 corresponds to the receiving means according to the present invention, and the packet type data detecting circuit 202 corresponds to the present invention. The selector circuit 206 corresponds to the packet type data detecting unit, and the selector circuit 206 corresponds to the packet separating unit according to the present invention.
[0034]
Hereinafter, the operation of the data transmission system 1 will be described.
The SDI data or SDDI data in the 10-bit parallel format input from the video device corresponding to the SDI system or the SDDI system to the transmitting device 10 isUnder the control of the control circuit 110 according to the setting data input from outside the transmitting device 10The signal is selected by the selector circuit 100 and input to the FIFO 102 as a transmission signal.
FIFO 102 isOutput from the selector circuit 100The transmission signal is buffered and output to the P / S conversion circuit 104 at a timing synchronized with the synchronization signal.
The P / S conversion circuit 104Output from FIFO 102Convert the transmission signal to a 1-bit serial transmission signalsingleThe signal is transmitted to the receiving device 20 via the transmission path.
[0035]
Of the receiving device 20The S / P conversion circuit 200From the transmitting device 10The transmission signal is received, converted into a 10-bit parallel reception signal, and output to the packet type data detection circuit 202.
The packet type data detection circuit 202The signal was received by the S / P conversion circuit 200 and converted to a 10-bit parallel signal.A transmission packet is detected from the received signal, and shown in FIG.Ancillary data section ANC header data HEADERThe content of the position of DATAID is detected, and the detection result is output to the control circuit 210.
The FIFO 204 separates the SDI signal and the SDDI signal by the selector circuit 206.OutputIn this case, the packet for transmission is buffered so as not to be truncated and output to the selector circuit 206.
The selector circuit 206 shown in FIG.Ancillary data section ANC header data HEADERContent of DATAIDIn other words, whether or not the SDDI methodThe SDI data and the SDDI data are separated according to the control of the corresponding control circuit 210.From the first or second output terminals a, bOutput.
[0036]
According to the data transmission system 1, SDI data and SDDI data can be transmitted on the same transmission path. Therefore,Illustrated with reference to FIG.In the data transmission device 8 shown as a conventional example,, In the transmitting device and the receiving device, respectively.FIFO needed two sets812, 822, FIFOs 840, 850,P / S conversion circuit810, 820And S / P conversion circuit842, 852Can be reduced to one set, and the apparatus cost is low.
Further, according to the data transmission system 1, the number of transmission lines conventionally required two can be reduced to one, so that the cost of the transmission lines can be reduced and the installation work can be simplified.
Further, according to the data transmission system 1, the receiving device 20 can automatically identify and separate the SDI and SDDI transmission packets from each other. Are easily mixed in the same video processing system.
[0037]
Embodiment 2
Hereinafter, a second embodiment of the present invention will be described.
FIG. 5 is a diagram showing the configuration of the data transmission system 3 according to the present invention in the second embodiment.
FIG. 6 is a diagram showing a configuration of the data transmission / reception devices 32a to 32d shown in FIG.
As shown in FIG. 5, the data transmission system 3 according to the present invention includes four data transmission / reception devices 32a to 32d, and an SDI signal and an SDDI signal are transmitted between the data transmission / reception devices 32a to 32d. Are mixed and transmitted on the same transmission path.
[0038]
The data transmission / reception devices 32a to 32d have the same configuration and perform the same operation.
As shown in FIG. 6, the data transmission / reception devices 32a to 32d (hereinafter, simply referred to as the data transmission / reception device 32 when these are not separately specified) include S / P conversion circuits 320 and 350, and P / S conversion, respectively. Circuits 344, 362,Packet type data detection circuit 322, FIFOs 324, 340, 352, 360, control circuit (CPU)330And the switch network 332, and separates SDI data or SDDI data from transmission signals transmitted from the other data transmission / reception devices 32 according to the video equipment connected to the transmission signals, to obtain signals VOUTa to VOUTd. It supplies or transmits input signals VINa to VINd from the video equipment to another data transmitting / receiving device 32 or relays transmission signals.
[0039]
The S / P conversion circuit 320 performs the same operation as the S / P conversion circuit 200 shown in FIG. 4, receives a transmission signal transmitted from another data transmission / reception device 32, and converts the transmission signal into a parallel reception signal. Then, the data is output to the packet type data detection circuit 322.
The packet type data detection circuit 322 includes:Illustrated in FIG.The same operation as the packet type data detection circuit 202 is performed to detect the packet identification data of the received signal, and the detection result is sent to the control circuit 330, and the received signal is sent to the FIFO as it is.324Output to
[0040]
FIFO 324 isIllustrated in FIG.The same operation as that of the FIFO 204 is performed, and the received signal is buffered and output to the switch network 332.
FIFO 340 isIllustrated in FIG.The same operation as that of the FIFO 102 is performed, and the transmission signal input from the switch network 332 is buffered and output to the P / S conversion circuit 344.
The control circuit 330Illustrated in FIG.Control circuit 110And control circuit 210, And controls each part of the switch network 332 and the like in accordance with setting data input from outside such as video equipment connected to each of the data transmitting / receiving devices 32.
[0041]
The S / P conversion circuit 350 and the FIFO 352Illustrated in FIG.The same operation as that of the S / P conversion circuit 120 and the FIFO 122 is performed, and a synchronization signal is received from another data transmission / reception device 32.
The FIFO 360 and the P / S conversion circuit 362Illustrated in FIG.The same operation as that of the FIFO 220 and the P / S conversion circuit 222 is performed, and a synchronization signal is transmitted to the other data transmission / reception devices 32.
[0042]
The switch network 332 performs signal switching between input terminals a and c and output terminals b and d. Specifically, the switch network 332 outputs the SDI or SDDI input signals VINa to VINd input from the video equipment to the input terminal c as transmission signals from the output terminal b under the control of the control circuit 330. SDI data or SDDI data is separated from the reception signal input from the terminal a and output as output signals VOUTa to VOUTd from the output terminal d. Further, the transmission signal input from the input terminal a is directly transmitted from the output terminal b to the transmission signal Is output as
[0043]
Hereinafter, operations of the data transmission system 3 and the data transmission / reception device 32 shown in FIGS. 5 and 6 will be described.
In the data transmission system 3, a transmission signal is transmitted from the data transmission / reception device 32a to the data transmission / reception device 32b, from the data transmission / reception device 32b to the data transmission / reception device 32c, and so on.
The data transmission / reception devices 32a to 32d take out SDI data or SDDI data corresponding to the respectively connected video equipment from the transmission signal in the same manner as the receiving device 20 shown in FIG. Is relayed to the data transmitting / receiving device 32.
Further, transmission and reception of the synchronization signal REF are also performed between the data transmitting / receiving devices 32a to 32d as shown in FIG.
[0044]
By configuring the data transmission system 3 in this way, a large-scale video processing system can be easily configured by mixing video equipment compatible with the SDI standard and video equipment compatible with the SDDI standard. An effect similar to that of the data transmission system 1 shown in the embodiment can be obtained.
[0045]
The number of the data transmitting / receiving devices 32 is not limited to four, and the data transmission system 3 can be configured with an arbitrary number. The connection relationship is not limited to the one shown in FIG. 5. For example, the data transmission / reception device 32 is configured to be able to transmit / receive data via a plurality of transmission paths, and the data transmission / reception devices 32 a and 32 c and the data transmission / reception device A transmission path for directly connecting between 32b and 32d may be provided.
To the data transmitting / receiving device 32And a destination device address (DESTINATION DEVICE ADDRESS) of the header data HEADER stored in the ancillary data section ANC illustrated in FIG. 3B.By adding a function of detecting an image, a video processing system capable of transmitting arbitrary data to a desired device can be realized.
Further, in addition to such a function, an exchange function may be added to the data transmission / reception device 32 so that a more complicated system can be configured.
[0046]
As described above, the embodiments of the data receiving apparatus, the data transmitting / receiving apparatus, and the methods of the present invention have been described.
Further, a video signal processing method in which the above method is applied to a video device can be provided.
[0047]
【The invention's effect】
As described above, according to the data receiving device, the data transmitting / receiving device, the video device, and the method according to the present invention, in the video processing system in which the SDI video device and the SDDI video device are mixed, The SDI signal and the SDDI signal can be mixed and transmitted and received on the same transmission path between these video devices.
[0048]
Further, according to the data receiving apparatus, the data transmitting / receiving apparatus, the video equipment, and the methods according to the present invention, the SDI signal and the SDDI signal transmitted on the same transmission path are automatically identified, It is possible to separate them into transmission packet units and supply them to the corresponding video equipment.
[Brief description of the drawings]
FIGS. 1A and 1B are diagrams showing a frame structure of an SDI system and the like, wherein FIG. 1A is a diagram showing a frame structure of an SDI system video signal, and FIG. 1B is a diagram showing a structure of an SDI system transmission packet; (C) is a diagram showing the data rate of the transmitted SDI video signal.
FIGS. 2A and 2B are diagrams showing a frame configuration and the like of the SDDI system, wherein FIG. 2A is a diagram showing a frame configuration of an SDDI video signal, and FIG. 2B is a diagram showing a configuration of a transmission packet of the SDDI system; (C) is a diagram showing the data rate of the SDDI video signal transmitted.
FIG. 3 is a diagram showing data included in an ancillary data part ANC of the transmission packet of the SDDI system shown in FIG. 2;
FIG. 4 is a diagram showing a configuration of a data transmission system according to the present invention in the first embodiment.
FIG. 5 is a diagram showing a configuration of a data transmission system according to the present invention in a second embodiment.
FIG. 6 is a diagram showing a configuration of the data transmitting / receiving device shown in FIG.
FIG. 7 is a diagram showing a configuration of a conventional data transmission device.
[Explanation of symbols]
1, 3 data transmission system, 10 transmission device, 20 reception device, 32, 32a to 32d data transmission / reception device, 100, 206 selector circuit, 102, 122, 204, 220, 324, 340, 352, 360 ... FIFO, 104, 222, 344, 362 ... P / S conversion circuit, 120, 200, 320, 350 ... S / P conversion circuit, 202, 332 ... packet type data detection circuit, 110, 210, 330 ... control circuit, 332 ... Switch network

Claims

Receiving the first data of the SDI system and the second data of the SDDI system having different frame configurations transmitted through a single transmission path, and identifying the received first data or second data for each packet; A data receiving device for separating and outputting to a different first data output terminal or a different second data output terminal,
The first data of the SDI system includes a first vertical blanking unit, a data storage unit for the first field, a second vertical blanking unit, and a data for the second field along the vertical direction of the video signal. Each of the lines for the first and second fields includes an end synchronization code area, an ancillary data area, a start code area, and an active video area. A synchronization code indicating the end of the active video area of the previous line is stored, the ancillary data area stores data indicating the type of the first data, and the start code area includes the active video area. Are stored, and a fixed-length video signal is stored in the active video area.
In the second data of the SDDI system, each line along the vertical direction of the video signal includes an end synchronization code area, an ancillary data area, a start code area, and a payload area. Stores a synchronization code indicating the end of the payload area of the previous line, stores data indicating the type of the second data in the ancillary data area, and stores the payload area in the start code area. A synchronization code is stored in the payload area, and a fixed-length or variable-length video signal is stored in the payload area.
The data indicating the type of the first data in the ancillary data area of the first data is the same as the data indicating the type of the second data in the ancillary data area of the second data,
The data receiving device,
Serial-parallel conversion means for converting the first data or the second data in a serial format input through the single transmission line into parallel data;
Packet identification data for detecting, in packet units, that either the first or second data has been input by referring to data indicating the data type of the ancillary data area of the parallel format data converted by the conversion means Detecting means;
Data buffering means for buffering and outputting the input first data or second data in packet units;
Control means;
A first input terminal and first and second output terminals for receiving packet-based data read from the data buffering unit from the first input terminal under the control of the control unit; A data receiving device comprising: a data selection output means for selectively outputting from the first data output terminal or the second data output terminal according to a data type detected by data detection means.

The data selection output means further has a third output terminal for outputting the first data and the second data in the parallel format,
The data receiving device further includes:
The first data and the second data in the parallel format output from the third output terminal are input, and the input first data and the second data in the parallel format are converted into the first data and the second data in the serial format. Parallel-serial conversion means for converting and outputting;
The data selection and output unit outputs the first data and the second data based on the data indicating the detection result of the packet identification data detection unit and the set data, to a first output terminal or a second output terminal of the data selection and output unit. An output terminal or control means for controlling the first data and the second data to be selectively output to a third output terminal of the data selection output means,
The first data or the second data in the serial format output from the parallel-serial conversion means is output from a third output terminal of the data selection output means.
The data receiving device according to claim 1.

The data selection output means further has a second input terminal to which first data and second data in parallel format output from an external device located outside the data receiving device are input,
The control means, the first data or the second data in the parallel format output from the serial-parallel conversion means based on the data indicating the detection result of the packet identification data detection means and the set data, or The data selection / output means is controlled to selectively output the first data or the second data in the parallel format inputted from the first input terminal of the data selection / output means from the third output terminal of the data selection / output means. The data receiving apparatus according to claim 2, wherein

Receiving the first data of the SDI system and the second data of the SDDI system having different frame configurations transmitted through a single transmission path, and identifying the received first data or second data for each packet; A video device that separates and outputs to a different first data output terminal or a different second data output terminal,
The first data of the SDI system includes a first vertical blanking unit, a data storage unit for the first field, a second vertical blanking unit, and a data for the second field along the vertical direction of the video signal. Each of the lines for the first and second fields includes an end synchronization code area, an ancillary data area, a start code area, and an active video area. A synchronization code indicating the end of the active video area of the previous line is stored, the ancillary data area stores data indicating the type of the first data, and the start code area includes the active video area. Are stored, and a fixed-length video signal is stored in the active video area.
In the second data of the SDDI system, each line along the vertical direction of the video signal includes an end synchronization code area, an ancillary data area, a start code area, and a payload area. Stores a synchronization code indicating the end of the payload area of the previous line, stores data indicating the type of the second data in the ancillary data area, and stores the payload area in the start code area. A synchronization code is stored in the payload area, and a fixed-length or variable-length video signal is stored in the payload area.
The data indicating the type of the first data in the ancillary data area of the first data is the same as the data indicating the type of the second data in the ancillary data area of the second data,
The video equipment,
Serial-parallel conversion means for converting the first data or the second data in a serial format input through the single transmission line into parallel data;
Packet identification data for detecting, in packet units, that either the first or second data has been input by referring to data indicating the data type of the ancillary data area of the parallel format data converted by the conversion means Detecting means;
Data buffering means for buffering and outputting the input first data or second data in packet units;
Control means;
A first input terminal and first and second output terminals for receiving packet-based data read from the data buffering unit from the first input terminal under the control of the control unit; A video device comprising: a data selection output unit that selectively outputs the data from the first data output terminal or the second data output terminal according to the data type detected by the data detection unit.

The data selection output means further has a third output terminal for outputting the first data and the second data in the parallel format,
The video device further includes:
The parallel-format first data and the second data output from the third output terminal of the data selection output means are input, and the input parallel-format first data and second data are converted into serial-format first data. And parallel-to-serial conversion means for converting and outputting the second data,
The control means outputs the first data and the second data to the first output terminal or the second output terminal of the data selection output means based on the data indicating the detection result of the packet identification data detection means and the set data set. Or controlling the data selection output means to selectively output the first data and the second data to a third output terminal of the data selection output means;
The first data or the first data in the serial format output from the parallel-serial conversion means is output from a third output terminal of the data selection output means.
The video device according to claim 4.

The data selection output unit further has a second input terminal to which first data and second data in parallel format output from an external device located outside the video device are input,
The control means, the first data or the second data in the parallel format output from the serial-parallel conversion means based on the data indicating the detection result of the packet identification data detection means and the set data, or The data selection / output means is controlled to selectively output the first data or the second data in the parallel format inputted from the first input terminal of the data selection / output means from the third output terminal of the data selection / output means. The video device according to claim 5.

A data transmission device and a data reception device connected via a single data transmission path corresponding to claim 2 of the parent application, and a frame is transmitted from the transmission apparatus to the data reception apparatus via the single transmission path. The first data of the SDI system and the second data of the SDDI system having different configurations are transmitted, and the received first data or the second data is identified for each packet in the data receiving device, and different first data output terminals or second data are output. 2. A data transmitting and receiving device, which separates and outputs data to two data output terminals,
The first data of the SDI system includes a first vertical blanking unit, a data storage unit for the first field, a second vertical blanking unit, and a data for the second field along the vertical direction of the video signal. Each of the lines for the first and second fields includes an end synchronization code area, an ancillary data area, a start code area, and an active video area. A synchronization code indicating the end of the active video area of the previous line is stored, the ancillary data area stores data indicating the type of the first data, and the start code area includes the active video area. Are stored, and a fixed-length video signal is stored in the active video area.
In the second data of the SDDI system, each line along the vertical direction of the video signal includes an end synchronization code area, an ancillary data area, a start code area, and a payload area. Stores a synchronization code indicating the end of the payload area of the previous line, stores data indicating the type of the second data in the ancillary data area, and stores the payload area in the start code area. A synchronization code is stored in the payload area, and a fixed-length or variable-length video signal is stored in the payload area.
The data indicating the type of the first data in the ancillary data area of the first data is the same as the data indicating the type of the second data in the ancillary data area of the second data,
The transmitting device,
Data input selection means for selecting and inputting either the first data in the parallel format or the second data in the parallel format based on the setting data;
First buffering means for buffering and holding output data from the data input selecting means;
Data transmitting means for converting the data held in the first buffering means into serial data and transmitting the serial data to the data receiving device via the single transmission path;
The data input selection unit, the first buffering unit, and a first control unit that controls operation timing of the data transmission unit based on a synchronization signal transmitted from the data reception device;
The data receiving device,
Serial-parallel conversion means for converting the first data or the second data in a serial format input through the single transmission line into parallel data;
Reference is made to data indicating the data type of the ancillary data area of the parallel format data converted by the serial / parallel conversion means, and it is detected in units of packets that either the first or second data has been input. Packet identification data detection means;
Second buffering means for buffering and outputting the input first data or second data in packet units;
Control means;
A first input terminal and first and second output terminals for receiving packet-based data read from the data buffering unit from the first input terminal under the control of the control unit; Data selection output means for selectively outputting from the first data output terminal or the second data output terminal according to the data type detected by the data detection means;
Having a synchronization signal transmitting means for transmitting the synchronization signal to the data transmission device,
Data transceiver.

An SDI system having a first video device and a second video device connected via a single data transmission path, and having a different frame configuration from the transmitting apparatus to the data receiving apparatus via the single transmission path. The first data and the second data of the SDDI method are transmitted, and the received first data or the second data is identified for each packet in the data receiving device and is transmitted to a different first data output terminal or a second data output terminal. A video signal processing system for separating and outputting,
The first data of the SDI system includes a first vertical blanking unit, a data storage unit for the first field, a second vertical blanking unit, and a data for the second field along the vertical direction of the video signal. Each of the lines for the first and second fields includes an end synchronization code area, an ancillary data area, a start code area, and an active video area. A synchronization code indicating the end of the active video area of the previous line is stored, the ancillary data area stores data indicating the type of the first data, and the start code area includes the active video area. Are stored, and a fixed-length video signal is stored in the active video area.
In the second data of the SDDI system, each line along the vertical direction of the video signal includes an end synchronization code area, an ancillary data area, a start code area, and a payload area. Stores a synchronization code indicating the end of the payload area of the previous line, stores data indicating the type of the second data in the ancillary data area, and stores the payload area in the start code area. A synchronization code is stored in the payload area, and a fixed-length or variable-length video signal is stored in the payload area.
The data indicating the type of the first data in the ancillary data area of the first data is the same as the data indicating the type of the second data in the ancillary data area of the second data,
The first video device is
Data input selection means for selecting and inputting either the first data in the parallel format or the second data in the parallel format based on the setting data;
First buffering means for buffering and holding output data from the data input selecting means;
Data transmission means for converting the data held in the first buffering means into serial data and transmitting the serial data to the second video device via the single transmission path;
The data input selection unit, the first buffering unit, and a first control unit that controls operation timing of the data transmission unit based on a synchronization signal transmitted from the second video device;
The second video device is
Serial-parallel conversion means for converting the first data or the second data in a serial format input through the single transmission line into parallel data;
Reference is made to data indicating the data type of the ancillary data area of the parallel format data converted by the serial / parallel conversion means, and it is detected in units of packets that either the first data or the second data has been input. Packet identification data detecting means for performing
Second buffering means for buffering and outputting the input first data or second data in packet units;
Second control means;
A first input terminal and first and second output terminals; receiving data in packet units read from the data buffering unit from the first input terminal under the control of the second control unit; Data selection output means for selectively outputting from the first data output terminal or the second data output terminal according to the data type detected by the packet identification data detection means;
Having a synchronization signal transmitting means for transmitting the synchronization signal to the data transmission device,
Video signal processing system.

It has a pair of video equipment connected via a single data transmission path, and the first video equipment of the SDI system having a different frame configuration from the one video equipment to the other video equipment via the single transmission path. The data and the second data of the SDDI system are transmitted, and the other video equipment separates the received first data or second data for each packet and separates the received first data or second data into different first data output terminals or second data output terminals. Output, a video signal processing system,
The first data of the SDI system includes a first vertical blanking unit, a data storage unit for the first field, a second vertical blanking unit, and a data for the second field along the vertical direction of the video signal. Each of the lines for the first and second fields includes an end synchronization code area, an ancillary data area, a start code area, and an active video area. A synchronization code indicating the end of the active video area of the previous line is stored, the ancillary data area stores data indicating the type of the first data, and the start code area includes the active video area. Are stored, and a fixed-length video signal is stored in the active video area.
In the second data of the SDDI system, each line along the vertical direction of the video signal includes an end synchronization code area, an ancillary data area, a start code area, and a payload area. Stores a synchronization code indicating the end of the payload area of the previous line, stores data indicating the type of the second data in the ancillary data area, and stores the payload area in the start code area. A synchronization code is stored in the payload area, and a fixed-length or variable-length video signal is stored in the payload area.
The data indicating the type of the first data in the ancillary data area of the first data is the same as the data indicating the type of the second data in the ancillary data area of the second data,
Each of the video devices,
A transmission unit;
A receiving unit,
A data input / output selection unit having first and second input terminals and first and second output terminals, wherein the second input terminal and the second output terminal are connected to a video device;
Control means,
The data input / output selection unit may, under the control of the control unit, output either the first data in parallel format or the second data in parallel format input to a first input terminal to a first output terminal or Outputting to the second output terminal, and outputting data input from the second input terminal to the second output terminal;
The transmitting unit includes:
First buffering means for buffering and holding data output from a first output terminal of the data input / output selecting unit;
Data transmission means for converting the data held in the first buffering means into serial data and transmitting the serial data to a receiving unit of a video device connected via the transmission path,
The data receiving unit,
Receiving means for receiving the first data or the second data from a transmission unit of a video device connected via the transmission path and converting the data into a parallel format;
Packet type data detection means for identifying data indicating the data type included in the received first data or second data in packet units;
Second buffering means for buffering and outputting the received first data or second data,
A synchronization signal transmitting unit that transmits the synchronization signal to a transmission unit of a video device connected via the transmission path,
The control unit controls the operation timing of the data input / output selection unit, the reception unit, and the transmission unit based on a synchronization signal transmitted from a data reception unit of a video device connected via the transmission path,
The data receiving unit converts the packet data read from the second buffering unit into a first data output terminal or a second data output terminal of the data input / output selection unit according to a data type detected by the packet identification data detection unit. Output according to the data type from
Video signal processing system.

Receiving the first data of the SDI system and the second data of the SDDI system having different frame configurations transmitted through a single transmission path, and identifying the received first data or second data for each packet; A data receiving method of separately outputting to a different first data output terminal or a different second data output terminal,
The first data of the SDI system includes a first vertical blanking unit, a data storage unit for the first field, a second vertical blanking unit, and a data for the second field along the vertical direction of the video signal. Each of the lines for the first and second fields includes an end synchronization code area, an ancillary data area, a start code area, and an active video area. A synchronization code indicating the end of the active video area of the previous line is stored, the ancillary data area stores data indicating the type of the first data, and the start code area includes the active video area. Are stored, and a fixed-length video signal is stored in the active video area.
In the second data of the SDDI system, each line along the vertical direction of the video signal includes an end synchronization code area, an ancillary data area, a start code area, and a payload area. Stores a synchronization code indicating the end of the payload area of the previous line, stores data indicating the type of the second data in the ancillary data area, and stores the payload area in the start code area. A synchronization code is stored in the payload area, and a fixed-length or variable-length video signal is stored in the payload area.
The data indicating the type of the first data in the ancillary data area of the first data is the same as the data indicating the type of the second data in the ancillary data area of the second data,
The data receiving method is
A serial-to-parallel conversion step of converting the first data or the second data in a serial format input through the single transmission path into parallel data;
Packet identification data for detecting, in units of packets, that either the first or second data has been input by referring to data indicating the data type of the ancillary data area of the parallel format data converted in the conversion step A detection step;
A buffering step of buffering and outputting the input first data or second data in packet units;
The data selection / output means having a first input terminal and first and second output terminals is controlled to read the data buffered in the buffering step and read out the data in packet units to the first data selection / output means of the data selection / output means. A data selection output step of inputting to an input terminal and selectively outputting from the first data output terminal or the second data output terminal of the data selection output means according to the data type detected by the packet identification data detection means; A data receiving method comprising:

The data selection output means further has a third output terminal for outputting the first data and the second data in the parallel format,
The data receiving method further includes:
The parallel-format first data and the second data output from the third output terminal of the data selection output means are input, and the input parallel-format first data and second data are converted into serial-format first data. And a parallel-to-serial conversion step of converting and outputting the second data,
The data selection and output means outputs the first data and the second data based on the data indicating the detection result of the packet identification data detection step and the set setting data from the first output terminal of the data selection output means or the A second output terminal or a control step of controlling the first data and the first data to be selectively output to the third output terminal,
The first data or the first data in the serial format output in the parallel-serial conversion step is output from the third output terminal of the data selection output unit.
The data receiving method according to claim 10.

The data selection output means further has a second input terminal to which first data and second data in parallel format output from the video equipment are input,
In the control step, the first data or the second data in the parallel format output in the serial / parallel conversion step based on the data indicating the detection result of the packet identification data detection step and the set data, or The data selection / output means is controlled to selectively output the first data or the second data in the parallel format inputted from the first input terminal of the data selection / output means from the third output terminal of the data selection / output means. The data receiving method according to claim 11, wherein

Receiving the first data of the SDI system and the second data of the SDDI system having different frame configurations transmitted through a single transmission path, and identifying the received first data or second data for each packet; A video signal processing method for separately outputting to a different first data output terminal or second data output terminal,
The first data of the SDI system includes a first vertical blanking unit, a data storage unit for the first field, a second vertical blanking unit, and a data for the second field along the vertical direction of the video signal. Each of the lines for the first and second fields includes an end synchronization code area, an ancillary data area, a start code area, and an active video area. A synchronization code indicating the end of the active video area of the previous line is stored, the ancillary data area stores data indicating the type of the first data, and the start code area includes the active video area. Are stored, and a fixed-length video signal is stored in the active video area.
In the second data of the SDDI system, each line along the vertical direction of the video signal includes an end synchronization code area, an ancillary data area, a start code area, and a payload area. Stores a synchronization code indicating the end of the payload area of the previous line, stores data indicating the type of the second data in the ancillary data area, and stores the payload area in the start code area. A synchronization code is stored in the payload area, and a fixed-length or variable-length video signal is stored in the payload area.
The data indicating the type of the first data in the ancillary data area of the first data is the same as the data indicating the type of the second data in the ancillary data area of the second data,
The video signal processing method,
A serial-to-parallel conversion step of converting the first data or the second data in a serial format input through the single transmission path into parallel data;
Packet identification data for detecting, in units of packets, that either the first or second data has been input by referring to data indicating the data type of the ancillary data area of the parallel format data converted in the conversion step A detection step;
A buffering step of buffering and outputting the input first data or second data in packet units;
A data selection / output unit having a first input terminal and first and second output terminals is controlled to read data held in the data buffering step and read out the data in a packet unit as a first input terminal of the data selection / output unit. And selectively outputting from the first data output terminal or the second data output terminal of the data selection output means according to the data type detected in the packet identification data detection step,
Controlling the data selection and output means in accordance with the data type detected in the packet identification data detection step.

The data selection output means further has a third output terminal for outputting the first data and the second data in the parallel format,
The video signal processing method further includes the step of inputting the first data and the second data in the parallel format output from the third output terminal of the data selection and output means, and inputting the first data and the second data in the parallel format. A parallel-serial conversion step of converting the data into first data and second data in serial format and outputting the converted data;
In the control step, the first data and the second data are converted into the first output terminal of the data selection output unit or the second output terminal based on data indicating a detection result of the packet identification data detection step and set data set. An output terminal, or controlling the data selection output means to selectively output the first data and the first data to the third output terminal of the data selection output means;
The first data or the first data in the serial format output from the parallel-serial conversion step is output from the third output terminal of the data selection output unit.
14. The video signal processing method according to claim 13.

The data selection output means further has a second input terminal to which first data and second data in parallel format output from an external device are input,
In the control step, the first data or the second data in the parallel format obtained in the serial / parallel conversion step based on the data indicating the detection result of the packet identification data detection step and the set data, or The data selection / output means is controlled to selectively output the first data or the second data in the parallel format inputted from the first input terminal of the data selection / output means from the third output terminal of the data selection / output means. The video signal processing method according to claim 14, wherein

First data of an SDI system having a different frame configuration from a transmitting device connected to the data receiving device via a single data transmission path to a data receiving device via the single transmission line. And the second data of the SDDI system is transmitted, and the received first data or the second data is identified for each packet in the data receiving apparatus and separated into different first data output terminals or different second data output terminals for output. A data transmission / reception method having a transmission method and a reception method,
The first data of the SDI system includes a first vertical blanking unit, a data storage unit for the first field, a second vertical blanking unit, and a data for the second field along the vertical direction of the video signal. Each of the lines for the first and second fields includes an end synchronization code area, an ancillary data area, a start code area, and an active video area. A synchronization code indicating the end of the active video area of the previous line is stored, the ancillary data area stores data indicating the type of the first data, and the start code area includes the active video area. Are stored, and a fixed-length video signal is stored in the active video area.
In the second data of the SDDI system, each line along the vertical direction of the video signal includes an end synchronization code area, an ancillary data area, a start code area, and a payload area. Stores a synchronization code indicating the end of the payload area of the previous line, stores data indicating the type of the second data in the ancillary data area, and stores the payload area in the start code area. A synchronization code is stored in the payload area, and a fixed-length or variable-length video signal is stored in the payload area.
The data indicating the type of the first data in the ancillary data area of the first data is the same as the data indicating the type of the second data in the ancillary data area of the second data,
The transmission method is
A data input selecting step of selecting and inputting either the first data in the parallel format or the second data in the parallel format based on the setting data;
A first buffering step of buffering and holding the data obtained in the data input selecting step;
A data transmission step of converting the data held in the first buffering step into serial data and transmitting the serial data to the data reception device via the single transmission path;
The data input selecting step, the first buffering step, and a first control step of controlling an operation timing of the data transmitting step based on a synchronization signal transmitted from the data receiving apparatus,
The receiving method is
A serial-to-parallel conversion step of converting the first data or the second data in a serial format input through the single transmission path into parallel data;
Reference is made to data indicating the data type of the ancillary data area of the parallel format data converted in the serial / parallel conversion step, and it is detected on a packet basis that either the first or second data has been input. A packet identification data detecting step;
A second buffering step of buffering and outputting the input first data or second data in packet units;
Controlling a data selection output means having a first input terminal and first and second output terminals to receive data in packet units held in the data buffering step from a first input terminal of the data selection output means; Selectively outputting from the first data output terminal or the second data output terminal of the data selection output means according to the data type detected in the packet identification data detection step;
A synchronization signal transmitting step of transmitting the synchronization signal to the data transmitting apparatus;
A second control step of controlling the operation of the data selection and output means.
How to send and receive data.