JP2006203725A - Video signal output device - Google Patents

Video signal output device Download PDF

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JP2006203725A
JP2006203725A JP2005015078A JP2005015078A JP2006203725A JP 2006203725 A JP2006203725 A JP 2006203725A JP 2005015078 A JP2005015078 A JP 2005015078A JP 2005015078 A JP2005015078 A JP 2005015078A JP 2006203725 A JP2006203725 A JP 2006203725A
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hdmi
edid
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JP4725113B2 (en
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Hitoshi Katayama
仁志 片山
Hiroki Takamori
弘樹 高森
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Panasonic Holdings Corp
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Matsushita Electric Industrial Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a problem occurs if an HDMI is connected at a state that regular software is started when the HDMI is connected and there is a case that a video image can not be correctly outputted among a plurality of video display devices or AV amplifiers. <P>SOLUTION: At the time of power ON of the video display devices and the AV amplifiers to be connected, EDID information is read from the devices to be connected, product information/ manufacturer information/video format information are detected, compared with information stored in a memory and when the pieces of information coincide, the starting content of the software is changed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、複数の映像フォーマットを切換えて出力することのできる映像信号出力装置に関するものである。   The present invention relates to a video signal output apparatus capable of switching and outputting a plurality of video formats.

近年ＤＶＤの需要が大幅に増え、それに伴いＤＶＤプレーヤやＤＶＤレコーダなどの映像信号出力装置の需要も急激に増えてきている。また、ＤＶＤプレーヤなどの映像出力装置と接続される映像表示装置やＡＶアンプ装置も多種多様なものがある。従来、映像出力装置はアナログ信号で映像を出力していた。近年アナログ信号では映像の劣化があり、デジタル信号で劣化のない映像を見たいという需要が広がり、デジタル伝送できる映像信号出力装置の開発が進んでいる。特に、ＩＥＥＥ１３９４規格に準拠してデジタル伝送を行う装置が多く開発されていて、装置をＩＥＥＥ１３９４で接続した時に装置間で互いを認識することも可能となっている。   In recent years, the demand for DVDs has greatly increased, and accordingly, the demand for video signal output devices such as DVD players and DVD recorders has also increased rapidly. There are also a wide variety of video display devices and AV amplifier devices connected to video output devices such as DVD players. Conventionally, video output devices output video as analog signals. In recent years, analog signals have deteriorated video, and there is a growing demand for viewing digital images without deterioration, and development of video signal output devices capable of digital transmission is progressing. In particular, many devices that perform digital transmission in conformity with the IEEE 1394 standard have been developed, and when devices are connected by IEEE 1394, the devices can recognize each other.

ＩＥＥＥ１３９４ネットワークに接続された装置であれば、Ｃｏｎｆｉｇｕｒａｔｉｏｎ ＲＯＭのキーワードリーフに保持されるｋｅｙｗｏｒｄｓの文字列を解析することで、その装置がどのような種類の装置であるか（プリンタ、パーソナルコンピュータ、デジタルカメラなど）を判断することができる。更に、フィーチャディレクトリに書かれている文字列を解析することで、その装置がどのような装置を表示装置としているかについて情報を得ることができる。そのため、例えばプリンタでは印刷の指示をした相手の装置の種類を特定することができて、またどのような表示装置に表示されたイメージを基にして印刷を指示しているかを知ることができるため、相手の装置に合わせた、よりユーザーの欲する印刷を行うことが可能となる。   If the device is connected to the IEEE 1394 network, by analyzing the keyword character string held in the keyword leaf of the Configuration ROM, what kind of device is the device (printer, personal computer, digital camera) Etc.) can be determined. Further, by analyzing the character string written in the feature directory, it is possible to obtain information on what kind of device is the display device. For this reason, for example, the printer can specify the type of the partner device that has instructed printing, and can know what display device displays the image based on the image displayed on the display device. Therefore, it is possible to perform printing more desired by the user according to the partner apparatus.

このように、ＩＥＥＥ１３９４規格に準拠した機器では、Ｃｏｎｆｉｇｕｒａｔｉｏｎ ＲＯＭの情報を用いることにより、接続する機器を特定し、処理を変えることが可能であった。（例えば、特許文献１参照。）
一方、ＨＩＧＨ ＤＥＦＩＮＩＴＩＯＮ ＭＵＬＴＩＭＥＤＩＡ ＩＮＴＥＲＦＡＣＥ（以下、ＨＤＭＩと略称）規格に準拠してデジタル伝送を行う装置も開発されていているが、ＩＥＥＥ１３９４規格に準拠した機器のように、接続する機器を特定し、処理を変えることは無かった。 As described above, in a device conforming to the IEEE 1394 standard, it is possible to specify a device to be connected and change processing by using information in the configuration ROM. (For example, refer to Patent Document 1.)
On the other hand, devices that perform digital transmission in conformity with the HIGH DEFINITION MULTITIMEDIA INTERFACE (hereinafter abbreviated as HDMI) standard have also been developed. There was no change.

ＨＤＭＩ規格に準拠したデジタル伝送装置の動作を図３、図４、図５を用いて説明する。図３はＨＤＭＩ規格に準拠した映像信号出力装置のブロック図、図４はその装置のＨＤＭＩ認証動作を示した説明図、図５はその装置が認証に失敗する場合のＨＤＭＩ認証動作を示した説明図である。図３に示すように、映像信号出力装置３１にはＨＤＭＩ接続を確認する用途に使用するホットプラグ信号が入力される。入力されたホットプラグ信号は、ホットプラグ判別手段９により１／０情報に変換され、ＨＤＭＩデータ処理手段３２に入力される。また、ＥＸＴＥＮＤＥＤ ＤＩＳＰＬＡＹ ＩＤＥＮＴＩＦＩＣＡＴＩＯＮ ＤＡＴＡ（以下、ＥＤＩＤと略称）データもＨＤＭＩデータ処理手段１２に入力される。ここでＥＤＩＤデータとは、映像表示装置が画面に表示可能、または入力可能な映像に関する情報と、入力可能な音声に関する情報、メーカー情報、製品情報などを含み、ＶＥＳＡで策定されたＥｘｔｅｎｄｅｄ Ｄｉｓｐｌａｙ Ｉｄｅｎｔｉｆｉｃａｔｉｏｎ Ｄａｔａ（ＥＤＩＤ）規格に準拠し、ＥＩＡ／ＣＥＡ−８６１Ｂ規格で規定されるデータ形式に納められているデータである。
図４に示すように、ホットプラグ信号がＨｉｇｈになると認証を開始し、ＨＤＭＩ信号を出力する。次に、接続する機器を特定する手段を備えていないために、認証を失敗する場合について説明する。図５に示すように、ホットプラグ信号がＨｉｇｈになると認証を始めるが、フォーマット切換えによるＨＤＭＩ出力信号の中断を検出し、ホットプラグ信号をＬｏｗにしてしまう特定の映像表示装置が存在する。このような映像表示装置をＨＤＭＩ接続した場合、認証動作中にホットプラグ信号がＬｏｗになると認証を中断するため認証が失敗する。
特開２００１−２５７６８５号公報 The operation of the digital transmission device compliant with the HDMI standard will be described with reference to FIGS. 3, 4, and 5. FIG. FIG. 3 is a block diagram of a video signal output device compliant with the HDMI standard, FIG. 4 is an explanatory diagram showing the HDMI authentication operation of the device, and FIG. 5 is an explanation showing the HDMI authentication operation when the device fails authentication. FIG. As shown in FIG. 3, the video signal output device 31 receives a hot plug signal used for the purpose of confirming the HDMI connection. The input hot plug signal is converted into 1/0 information by the hot plug determining means 9 and input to the HDMI data processing means 32. EXTENDED DISPLAY IDENTIFICATION DATA (hereinafter abbreviated as EDID) data is also input to the HDMI data processing means 12. Here, the EDID data includes information related to video that can be displayed or input by the video display device, information related to audio that can be input, manufacturer information, product information, and the like, and is an extended display identification data formulated by VESA. This data is based on the (EDID) standard and is stored in a data format defined by the EIA / CEA-861B standard.
As shown in FIG. 4, when the hot plug signal becomes High, authentication is started and an HDMI signal is output. Next, a description will be given of a case where authentication fails because no means for specifying a device to be connected is provided. As shown in FIG. 5, there is a specific video display device that starts authentication when the hot plug signal becomes High, but detects interruption of the HDMI output signal due to format switching and makes the hot plug signal Low. When such a video display apparatus is HDMI-connected, authentication fails because the authentication is interrupted when the hot plug signal becomes Low during the authentication operation.
Japanese Patent Application Laid-Open No. 2001-257685

解決しようとする課題は、複数の映像表示装置またはＡＶアンプ装置間で、ＨＤＭＩ接続をした時に通常のソフトウェアを起動している状態で接続するとＨＤＭＩ認証に失敗する問題が発生し、映像が正しく出力出来ない場合がある。   The problem to be solved is that HDMI authentication fails when connecting with multiple video display devices or AV amplifier devices with normal software running when HDMI connection is established, and the video is output correctly It may not be possible.

本発明の映像信号出力装置は、接続される映像表示装置やＡＶアンプ装置の電源ＯＮ時、接続される装置からＥＤＩＤ情報を読み込み、製品情報／メーカー情報／映像フォーマット情報を検出して、メモリーに記憶されている情報と比較し、情報が一致した場合にはソフトウェアの起動内容を変更する。   The video signal output device of the present invention reads EDID information from the connected device when the connected video display device or AV amplifier device is turned on, detects product information / manufacturer information / video format information, and stores it in the memory. Compared with the stored information, if the information matches, the activation content of the software is changed.

例えば，ＥＤＩＤの情報により接続される映像表示装置やＡＶアンプ装置を識別し、特定の映像表示装置やＡＶアンプ装置と接続している場合、認証動作中にホットプラグ信号をＬｏｗにされたとしても映像信号出力装置で認証動作を行う３秒間、ホットプラグ検出を行わないようにする。   For example, when a video display device or AV amplifier device to be connected is identified based on EDID information and connected to a specific video display device or AV amplifier device, even if the hot plug signal is set to Low during the authentication operation. The hot plug detection is not performed for 3 seconds when the video signal output apparatus performs the authentication operation.

本発明の映像信号出力装置は、通常のソフトウェアを起動するとＨＤＭＩ認証に失敗する装置を検出し、特別にソフトウェアの起動内容を変更してＨＤＭＩ認証を成功させることが出来る。   The video signal output device of the present invention can detect a device that fails HDMI authentication when starting normal software, and can change the startup content of the software to make HDMI authentication successful.

例えば、ホットプラグ信号がＬｏｗであることを検出するとＨＤＭＩの再認証を行うため、以前までの映像信号出力装置では処理シーケンスの不整合が原因で認証中にホットプラグがＬｏｗになると、ホットプラグ「Ｈｉｇｈ」⇒認証動作⇒「Ｌｏｗ」⇒「Ｈｉｇｈ」⇒再認証動作（認証初めから）⇒「Ｌｏｗ」の繰り返し（出力ＮＧ）によりＨＤＭＩの認証に失敗することがあった。しかしこの発明によりホットプラグ「Ｈｉｇｈ」⇒認証動作⇒「Ｌｏｗ」（無視）⇒「Ｈｉｇｈ」⇒認証動作（続き）⇒認証完了（出力ＯＫ）と動作することにより、ＨＤＭＩの認証を確立させ、映像を正常に出力させる。   For example, when it is detected that the hot plug signal is low, HDMI re-authentication is performed. Therefore, in the previous video signal output apparatus, if the hot plug becomes low during authentication due to a mismatch in the processing sequence, the hot plug “ HDMI authentication may fail due to the repetition (output NG) of “High” → authentication operation → “Low” → “High” → re-authentication operation (from the beginning of authentication) → “Low”. However, according to the present invention, the operation of hot plug “High” ⇒ authentication operation ⇒ “Low” (ignore) ⇒ “High” ⇒ authentication operation (continued) ⇒ authentication completion (output OK) establishes HDMI authentication and video Is output normally.

（実施の形態１）
図１は、本発明を実施するための映像信号出力装置のブロック図を示し、図１において１は映像信号出力装置全体を表しており、２は接続される映像表示装置やＡＶアンプ装置より入力されるＥＤＩＤ入力データからＥＤＩＤ製品情報を検出するＥＤＩＤ製品情報検出手段、３はＥＤＩＤメーカー情報を検出するＥＤＩＤメーカー情報検出手段、４はＥＤＩＤ映像フォーマット情報を検出するＥＤＩＤ映像フォーマット情報検出手段、５は製品情報、メーカー情報、映像フォーマット情報を有するメモリー、６はメモリーからリードした情報を出力するメモリー入出力手段、７は映像表示装置やＡＶアンプ装置からのＥＤＩＤ製品情報、ＥＤＩＤメーカー情報、とＥＤＩＤ映像フォーマット情報とメモリー出力情報を比較する比較手段、８は比較手段の比較結果に従いプログラムを切換えるプログラム切換え手段、１２はＨＤＭＩデータ処理手段である。 (Embodiment 1)
FIG. 1 is a block diagram of a video signal output apparatus for carrying out the present invention. In FIG. 1, 1 represents the entire video signal output apparatus, and 2 represents input from a connected video display apparatus or AV amplifier apparatus. EDID product information detecting means for detecting EDID product information from the EDID input data, 3 for EDID manufacturer information detecting means for detecting EDID manufacturer information, 4 for EDID video format information detecting means for detecting EDID video format information, 5 Memory having product information, manufacturer information and video format information, 6 is a memory input / output means for outputting information read from the memory, 7 is EDID product information from the video display device and AV amplifier device, EDID manufacturer information, and EDID video Comparing means for comparing format information and memory output information, 8 Program switching means for switching a program in accordance with the comparison result of the compare means 12 is a HDMI data processing means.

以上のように構成された映像信号出力装置について、以下その動作を説明する。
ホットプラグ情報は通常、「Ｈｉｇｈ」⇒「Ｌｏｗ」⇒「Ｈｉｇｈ」⇒認証動作のタイミングで切換わる。そして「Ｌｏｗ」⇒「Ｈｉｇｈ」の状態を認識すると、認証動作を開始する。 The operation of the video signal output apparatus configured as described above will be described below.
The hot plug information is normally switched at the timing of “High” → “Low” → “High” → authentication operation. When the state of “Low” → “High” is recognized, the authentication operation is started.

特定の映像信号出力装置と映像表示装置、またはＡＶアンプ装置をＨＤＭＩ接続したときに、通信タイミングが合わずＨＤＭＩの認証を失敗する組み合わせが存在する。そのため、映像信号出力装置が認証の失敗する特定の映像表示装置を検出し、通常のプログラムから通信タイミングを変更する特別なプログラムに切換えることにより認証を成功させるようにする。ＥＤＩＤ製品情報は製品毎に割り振られたＩＤ情報、ＥＤＩＤメーカー情報はメーカー毎に割り振られたＩＤ情報、ＥＤＩＤ映像フォーマット情報は映像表示装置が表示可能な映像フォーマット情報であり、ＥＤＩＤデータに記載されているこれらの情報の組み合わせにより特定の映像表示装置の検出が可能となる。映像信号出力装置は予め認証が失敗する映像表示装置に記載されている各種情報を記憶していて、接続装置から入力されるＥＤＩＤデータの情報と記憶している情報が一致したときに装置を検出する。   When a specific video signal output device and a video display device or an AV amplifier device are HDMI-connected, there are combinations in which the communication timing does not match and HDMI authentication fails. For this reason, the video signal output device detects a specific video display device in which authentication fails and switches from a normal program to a special program that changes the communication timing so that the authentication is successful. EDID product information is ID information assigned to each product, EDID manufacturer information is ID information assigned to each manufacturer, and EDID video format information is video format information that can be displayed by the video display device, and is described in the EDID data. The combination of these information enables detection of a specific video display device. The video signal output device stores in advance various information described in the video display device that fails authentication, and detects the device when the stored information matches the information of the EDID data input from the connected device To do.

本発明では接続される受像機からＥＤＩＤ情報を読み込み、ＥＤＩＤ製品情報検出手段２と、ＥＤＩＤメーカー情報検出手段３と、ＥＤＩＤ映像フォーマット情報検出手段４によって現在接続されている機器のＥＤＩＤ情報を検出する。検出した各ＥＤＩＤ情報と、メモリー５からメモリー入出力手段６がリードする製品情報、メーカー情報、映像フォーマット情報をメモリー入出力手段６が比較手段７で比較し、一致するかしないかをプログラム切換え手段８に伝える。プログラム切換え手段８は比較手段９の比較結果に従い、一致する場合と一致しない場合でプログラムの切換えを行う。   In the present invention, EDID information is read from a connected receiver, and EDID product information detection means 2, EDID manufacturer information detection means 3, and EDID video format information detection means 4 detect EDID information of the currently connected device. . Each detected EDID information is compared with product information, maker information, and video format information read from the memory 5 by the memory input / output means 6 by the memory input / output means 6 by the comparison means 7, and the program switching means determines whether or not they match. Tell 8 The program switching means 8 switches the program according to the comparison result of the comparison means 9 depending on the case of matching or not.

次にプログラム切換え手段８の構成例について説明する。ホットプラグ判別手段９は入力されたホットプラグ信号を１／０情報に変換する。ホットプラグ情報作成手段１１は比較手段７の比較結果に従い、比較手段７で比較した情報が一致した時は時間設定手段１０で設定される時間のみ１をＨＤＭＩデータ処理手段１２に出力し、一致しない時はホットプラグ判別手段９から得られた情報を出力する。   Next, a configuration example of the program switching means 8 will be described. The hot plug determining means 9 converts the input hot plug signal into 1/0 information. According to the comparison result of the comparison means 7, the hot plug information creation means 11 outputs 1 only to the time set by the time setting means 10 to the HDMI data processing means 12 when the information compared by the comparison means 7 matches, and does not match. At this time, the information obtained from the hot plug discrimination means 9 is output.

図２が認証失敗を回避する本発明の映像信号出力装置のＨＤＭＩ認証動作を示した説明図である。ホットプラグ情報作成手段１１は比較手段７の比較結果に従い、比較手段７で比較した情報が一致した時は、認証開始から時間設定手段１０で設定される３秒間、ホットプラグ情報データとして１を出力する。そのため、入力ホットプラグ信号がＬｏｗに落ちてしまっても認識しないようになる。３秒以降は、ホットプラグ情報データとしてホットプラグ判別手段９から得られた情報を出力する。また、このアルゴリズムによってその他の映像表示装置が接続されていると検出すると、ホットプラグ情報データとしてホットプラグ判別手段９から得られた情報を出力する。   FIG. 2 is an explanatory diagram showing the HDMI authentication operation of the video signal output apparatus of the present invention that avoids authentication failure. The hot plug information creation means 11 outputs 1 as hot plug information data for 3 seconds set by the time setting means 10 from the start of authentication when the information compared by the comparison means 7 matches according to the comparison result of the comparison means 7. To do. Therefore, even if the input hot plug signal falls to Low, it is not recognized. After 3 seconds, the information obtained from the hot plug determining means 9 is output as hot plug information data. Also, when it is detected by this algorithm that another video display device is connected, the information obtained from the hot plug determining means 9 is output as hot plug information data.

なお、特定の映像表示装置の検出にＥＤＩＤ製品情報、ＥＤＩＤメーカー情報、ＥＤＩＤ映像フォーマット情報の３つをすべて使用する必要は無い。少なくとも１つ以上を使用すれば良い。また、プログラム切換え手段を構成する各手段はすべてハードウェアで構成されている必要は無い。ソフトウェアで構成されていても良い。   Note that it is not necessary to use all three of EDID product information, EDID manufacturer information, and EDID video format information for detection of a specific video display device. At least one or more may be used. Further, all the means constituting the program switching means do not need to be constituted by hardware. It may consist of software.

本発明にかかわる映像信号出力装置は、接続される映像表示装置やＡＶアンプ装置などから得られたＥＤＩＤデータを利用して認証動作をスムーズに行うことが出来るので、様々な装置との連携の際に特定の機種での認証の失敗を防ぐことが可能である。   The video signal output apparatus according to the present invention can smoothly perform an authentication operation using EDID data obtained from a connected video display apparatus, AV amplifier apparatus, or the like. It is possible to prevent authentication failure on a specific model.

本発明の実施の形態における映像信号出力装置の構成を示した図The figure which showed the structure of the video signal output device in embodiment of this invention 本発明の実施の形態における映像信号出力装置のＨＤＭＩ認証の動作を示した説明図Explanatory drawing which showed the operation | movement of HDMI authentication of the video signal output device in embodiment of this invention ＨＤＭＩ規格に準拠した映像信号出力装置の構成を示した図The figure which showed the structure of the video signal output device based on HDMI specification ＨＤＭＩ規格に準拠した映像信号出力装置のＨＤＭＩ認証の動作を示した説明図Explanatory drawing which showed the operation | movement of the HDMI certification | authentication of the video signal output device based on HDMI specification ＨＤＭＩ規格に準拠した映像信号出力装置が認証に失敗した場合のＨＤＭＩ認証の動作を示した説明図Explanatory drawing which showed the operation | movement of HDMI authentication when the video signal output device based on HDMI specification fails in authentication

符号の説明Explanation of symbols

１ 映像信号出力装置
２ ＥＤＩＤ製品情報検出手段
３ ＥＤＩＤメーカー情報検出手段
４ ＥＤＩＤ映像フォーマット情報検出手段
５ メモリー
６ メモリー入出力手段
７ 比較手段
８ プログラム切換え手段
９ ホットプラグ判別手段
１０ 時間設定手段
１１ ホットプラグ情報作成手段
１２ ＨＤＭＩデータ処理手段 DESCRIPTION OF SYMBOLS 1 Video signal output device 2 EDID product information detection means 3 EDID maker information detection means 4 EDID video format information detection means 5 Memory 6 Memory input / output means 7 Comparison means 8 Program switching means 9 Hot plug discrimination means 10 Time setting means 11 Hot plug Information creation means 12 HDMI data processing means

Claims (2)

接続される装置より入力されるデータから製品情報を検出する製品情報検出手段と、前記入力データからメーカー情報を検出するメーカー情報検出手段と、前記入力データから映像フォーマット情報を検出する映像フォーマット情報検出手段のうち少なくとも一つ以上の検出手段を有し、製品情報とメーカー情報と映像フォーマット情報をメモリーから読み込み出力するメモリー入出力手段と、前記少なくとも一つ以上の検出手段から得られた情報と前記メモリー入出力手段から得られた情報が一致するかしないかを判別する比較手段と、前記比較手段から入力される一致情報に従いプログラム切換えを行うプログラム切換え手段とを備えたことを特徴とする映像信号出力装置。 Product information detection means for detecting product information from data input from a connected device, manufacturer information detection means for detecting manufacturer information from the input data, and video format information detection for detecting video format information from the input data At least one detection means among the means, memory input / output means for reading product information, manufacturer information, and video format information from a memory and outputting the information; information obtained from the at least one detection means; and A video signal comprising: comparing means for determining whether or not the information obtained from the memory input / output means matches; and program switching means for switching programs according to the matching information input from the comparing means. Output device. 前記プログラム切換え手段は、入力されるホットプラグ信号を判別する判別手段と、時間を設定する時間設定手段と、前記比較手段から入力される一致情報に従い一致した時は前記時間設定手段で設定された時間のみＨｉｇｈ情報を出力する情報作成手段とで構成されることを特徴とする、請求項１記載の映像信号出力装置。 The program switching means is set by the time setting means when there is a match according to the matching information input from the comparing means input from the determining means for determining the input hot plug signal, the time setting means, and the comparing means. 2. The video signal output device according to claim 1, further comprising information generating means for outputting high information only for time.
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