JPH05347744A - Digital recording/reproducing device - Google Patents
Digital recording/reproducing deviceInfo
- Publication number
- JPH05347744A JPH05347744A JP4156553A JP15655392A JPH05347744A JP H05347744 A JPH05347744 A JP H05347744A JP 4156553 A JP4156553 A JP 4156553A JP 15655392 A JP15655392 A JP 15655392A JP H05347744 A JPH05347744 A JP H05347744A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- video signal
- digital
- recording
- reproducing apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ディジタル記録再生機
器間のディジタル信号ダビングに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to digital signal dubbing between digital recording and reproducing equipment.
【０００２】[0002]
【従来の技術】従来のディジタルオーディオ機器もしく
はディジタルビデオ機器においては、Ａ／Ｄ変換された
状態にある音声信号や映像信号を用いてダビングを行な
っていた。以下、ディジタル記録再生装置を例に取り説
明する。2. Description of the Related Art In conventional digital audio equipment or digital video equipment, dubbing is performed by using an A / D-converted audio signal or video signal. Hereinafter, a digital recording / reproducing apparatus will be described as an example.
【０００３】図３は従来のディジタル記録ＶＴＲの構成
を示すブロック図、図４は従来のディジタル記録ＶＴＲ
での記録トラックパターン図である。図３において５０
はＡ／Ｄ変換器、５１は第一分離器、５２は付加情報発
生器、５３は第一多重器、５４は誤り訂正符号化器、５
５は変調器、５６は磁気記録再生系、５７は復調器、５
８は誤り訂正復号化器、５９は第二分離器、６０は修整
器、６１は第二多重器、６２は付加情報処理器、６３は
Ｄ／Ａ変換器、６４，６５は切換ＳＷである。図４にお
いてＶ０〜Ｖ９は映像データ部、ＡＬ０〜ＡＬ４は左音
声データ部、ＡＲ０〜ＡＲ４は右音声データ部、付加０
〜付加９は付加情報データ部である。FIG. 3 is a block diagram showing the structure of a conventional digital recording VTR, and FIG. 4 is a conventional digital recording VTR.
3 is a recording track pattern diagram in FIG. 50 in FIG.
Is an A / D converter, 51 is a first separator, 52 is an additional information generator, 53 is a first multiplexer, 54 is an error correction encoder, 5
5 is a modulator, 56 is a magnetic recording / reproducing system, 57 is a demodulator, 5
8 is an error correction decoder, 59 is a second separator, 60 is a modifier, 61 is a second multiplexer, 62 is an additional information processor, 63 is a D / A converter, and 64 and 65 are switching switches. is there. In FIG. 4, V0 to V9 are video data parts, AL0 to AL4 are left audio data parts, AR0 to AR4 are right audio data parts, and additional 0
-Addition 9 is an additional information data section.
【０００４】以上のように構成されたディジタルＶＴＲ
の記録再生について説明する。ＴＶチューナー、ビデオ
カメラ等のアナログ信号は、Ａ／Ｄ変換器５０により二
値化処理され、切換ＳＷ６４を経て第一多重器５３に送
られる。また付加情報発生器５２により発生したタイム
コード、音声信号標本化周波数コード、コピープロテク
トコード等の付加情報信号も、切換ＳＷ６５を経て第一
多重器５３に送られる。二値化処理された入力信号と付
加情報信号は、第一多重器５３でデータの並び換えを行
い各々のデータを混合後、誤り訂正符号化器５４により
誤り訂正符号化される。そして変調器５５で変調され、
磁気記録再生系５６に記録される。二値化処理したデー
タは、図４に示すように１垂直走査期間を１０トラック
に分けて記録を行い、各記録トラックの先頭には付加情
報が記録される。再生時には、磁気記録再生系５６から
再生されたデータは、復調器５７で復調後、誤り訂正復
号化器５８で誤り訂正され、第二分離器５９に送られ
る。第二分離器５９は、混合された付加情報信号と二値
化処理された記録信号に分離する。付加情報信号は、付
加情報処理器６２で処理を行い、記録された時刻の表
示、音声信号標本化周波数の発生等に使用する。また二
値化処理された記録信号は、修整器６０で訂正不可能な
誤りを修整され、Ｄ／Ａ変換器６３でアナログ信号に変
換後、ＴＶモニタに出力する。Digital VTR constructed as described above
Recording / reproducing will be described. An analog signal from a TV tuner, a video camera or the like is binarized by the A / D converter 50, and sent to the first multiplexer 53 via the switching SW64. Further, the additional information signals such as the time code, the audio signal sampling frequency code and the copy protect code generated by the additional information generator 52 are also sent to the first multiplexer 53 via the switching SW65. The input signal and the additional information signal that have been binarized are subjected to error correction encoding by the error correction encoder 54 after the data is rearranged by the first multiplexer 53 and the respective data are mixed. And modulated by the modulator 55,
It is recorded in the magnetic recording / reproducing system 56. The binarized data is recorded by dividing one vertical scanning period into 10 tracks as shown in FIG. 4, and additional information is recorded at the head of each recording track. During reproduction, the data reproduced from the magnetic recording / reproducing system 56 is demodulated by the demodulator 57, error-corrected by the error-correction decoder 58, and sent to the second separator 59. The second separator 59 separates the mixed additional information signal and the binarized recording signal. The additional information signal is processed by the additional information processor 62, and is used for displaying the recorded time, generating the audio signal sampling frequency, and the like. The binarized recording signal is corrected for uncorrectable errors by the modifier 60, converted into an analog signal by the D / A converter 63, and output to the TV monitor.
【０００５】次にダビングについて説明する。図５に示
す配列のダビング入力データを第一分離器５１で記録デ
ータ（Ｖｉｄｅｏ１，２ Ａｕｄｉｏ−Ｌ，Ａｕｄｉｏ
−Ｒ）と付加情報データ（ＩＮＤＥＸ，Ａｕｘ−Ｌ，Ａ
ｕｘ−Ｒ）に分離後、それぞれ切換ＳＷ６４，６５を経
て第一多重器５３に送られる。第一多重器５３以後の処
理は、前述の通りである。ダビング出力データは、修整
器６０で修整された二値化処理された記録信号と第二分
離器５９で分離した付加情報信号を第二多重器６１で図
５に示すデータ配列に並び換えたものを出力する。しか
し、付加情報信号にコピープロテクトコードが入ってい
ると第二多重器６１は、ダビング出力データを出力しな
い。Next, dubbing will be described. The dubbing input data having the arrangement shown in FIG. 5 is recorded by the first separator 51 as recording data (Video1, Audio-L, Audio).
-R) and additional information data (INDEX, Aux-L, A
ux-R) and then sent to the first multiplexer 53 via the switching SWs 64 and 65, respectively. The processing after the first multiplexer 53 is as described above. In the dubbing output data, the binarized recording signal modified by the modifier 60 and the additional information signal separated by the second separator 59 are rearranged by the second multiplexer 61 into the data array shown in FIG. Output things. However, if the copy protection code is included in the additional information signal, the second multiplexer 61 does not output the dubbing output data.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記し
た従来のディジタル記録再生装置では以下に示す課題を
有している。However, the above-mentioned conventional digital recording / reproducing apparatus has the following problems.
【０００７】上記のようなディジタル記録再生装置は、
ユーザーが任意でテレビ放送内容の記録、ビデオカメラ
による風景・人物の撮影したものについては、記録また
は撮影したユーザーにより前述のダビング操作で複製を
つくることができるが、著作権により保護されたビデオ
ソフトの内容を第二多重器６１の出力とする事はできな
いので極めて忠実な複製をつくることはできない。しか
し、ＴＶモニタに出力するＤ／Ａ変換器６３で変換した
アナログ信号を、ダビング信号とすると複製をつくるこ
とができるという問題を有していた。The digital recording / reproducing apparatus as described above is
The user can optionally record the contents of TV broadcasts, take pictures of landscapes and people with a video camera, and make a copy by the user who recorded or took the picture, but video software protected by copyright. Since the contents of (1) cannot be used as the output of the second multiplexer 61, extremely faithful reproduction cannot be made. However, there is a problem that it is possible to make a duplicate by using the analog signal converted by the D / A converter 63 output to the TV monitor as a dubbing signal.
【０００８】本発明は上記問題を解決するもので、簡単
な構成でディジタル状態のダビング出力の停止を行うと
同時に、アナログ映像信号にもコピープロテクト処理を
施すことができるディジタル記録再生装置を提供するこ
とを目的とする。The present invention solves the above problems and provides a digital recording / reproducing apparatus capable of stopping a dubbing output in a digital state with a simple structure and simultaneously performing a copy protection process on an analog video signal. The purpose is to
【０００９】[0009]
【課題を解決するための手段】上記課題を解決するため
に本発明は、高能率符号化されたディジタル映像信号と
ディジタル音声信号を記録再生するディジタル記録再生
装置であって、再生されたデータからコピープロテクト
コードを検出する検出手段と、高能率符号化され圧縮状
態のディジタル映像信号データとディジタル音声信号を
外部機器へ送受信するディジタル入出力手段と、コピー
プロテクトコードによりディジタル入出力手段を制御す
る制御手段と、検出したコピープロテクトコードにより
特定のパターン信号を発生させる信号発生手段と、再生
されたデータを高能率復号化して得たアナログ映像信号
にパターン信号を合成する手段をそなえたことを特徴と
するディジタル記録再生装置である。In order to solve the above-mentioned problems, the present invention is a digital recording / reproducing apparatus for recording / reproducing a high-efficiency coded digital video signal and digital audio signal. Detecting means for detecting the copy protect code, digital input / output means for transmitting / receiving highly efficient encoded compressed digital video signal data and digital audio signal to / from an external device, and control for controlling the digital input / output means by the copy protect code Means, signal generating means for generating a specific pattern signal according to the detected copy protection code, and means for synthesizing the pattern signal with an analog video signal obtained by highly efficient decoding of reproduced data. It is a digital recording / reproducing apparatus that
【００１０】[0010]
【作用】本発明では、上記のような構成により、磁気テ
ープに記録された付加情報データからコピープロテクト
コードを検出して、コピープロテクトコードが有ればデ
ィジタル信号出力によるダビングを制御してディジタル
出力できないようにすると共に、アナログ信号出力にコ
ピープロテクト信号を合成して出力する。According to the present invention, with the above-described structure, the copy protect code is detected from the additional information data recorded on the magnetic tape, and if there is the copy protect code, the dubbing by the digital signal output is controlled to perform the digital output. The copy protection signal is combined with the analog signal output and output.
【００１１】[0011]
【実施例】以下に、本発明の一実施例を図を用いて説明
する。An embodiment of the present invention will be described below with reference to the drawings.
【００１２】図１は本発明の一実施例のディジタル記録
再生装置の構成を示すブロック図であり、１は映像信号
Ａ／Ｄ変換器、２は高能率符号化器、３は音声信号Ａ／
Ｄ変換器、４は音声信号記録処理器、５は付加情報発生
器、６は第一分離器、７は第一多重器、８は音声信号誤
り訂正符号化器、９は誤り訂正符号化器、１０は変調
器、１１は磁気記録再生系、１２は復調器、１３は誤り
訂正復号化器、１４は音声信号誤り訂正復号化器、１５
は第二分離器、１６は付加情報処理器、１７はコピープ
ロテクトコード検出器、１８はコピープロテクト信号発
生器、１９は第一修整器、２０は高能率復号化器、２１
は映像信号Ｄ／Ａ変換器、２２は合成器、２３は第二修
整器、２４は音声信号再生処理器、２５は音声信号Ｄ／
Ａ変換器、２６は第二多重器、２７は第二多重器制御
器、４０，４１，４２は切換ＳＷである。FIG. 1 is a block diagram showing a configuration of a digital recording / reproducing apparatus according to an embodiment of the present invention. 1 is a video signal A / D converter, 2 is a high efficiency encoder, and 3 is an audio signal A / D.
D converter, 4 audio signal recording processor, 5 additional information generator, 6 first separator, 7 first multiplexer, 8 audio signal error correction encoder, 9 error correction encoding , 10 is a modulator, 11 is a magnetic recording / reproducing system, 12 is a demodulator, 13 is an error correction decoder, 14 is a voice signal error correction decoder, 15
Is a second separator, 16 is an additional information processor, 17 is a copy protect code detector, 18 is a copy protect signal generator, 19 is a first modifier, 20 is a high efficiency decoder, 21
Is a video signal D / A converter, 22 is a synthesizer, 23 is a second modifier, 24 is an audio signal reproduction processor, and 25 is an audio signal D / A.
An A converter, 26 is a second multiplexer, 27 is a second multiplexer controller, and 40, 41, 42 are switching switches.
【００１３】以上のように構成されたディジタル記録再
生装置の動作を説明する。まず通常記録動作について説
明する。入力された映像信号は、映像信号Ａ／Ｄ変換器
１でＡ／Ｄ変換され、高能率符号化器２で高能率符号化
後、切換ＳＷ４１を経て第一多重器７に入力される。音
声信号は、音声信号Ａ／Ｄ変換器３でＡ／Ｄ変換後、音
声信号記録処理器４で時間軸圧縮処理を行い切換ＳＷ４
０を経て第一多重器７に入力される。また付加情報発生
器５では、記録を開始した時刻（年月日）コード、音声
信号をＡ／Ｄ変換した時の標本化周波数コード、映像フ
ィールド／フレーム番号等を発生させて切換ＳＷ４２を
経て第一多重器７に入力される。第一多重器７では、入
力された映像信号データと音声信号データ各々に関連す
る付加情報を、映像信号データと音声信号データに各々
の付加情報データ部に付加情報データが続くように合成
する（本実施例では付加情報データが各データ配列に続
くように合成するとしたが各データに多重しても良
い）。付加情報データ合成した音声信号データは、音声
信号誤り訂正符号化器８で符号化処理を行い、誤り訂正
符号化器９で映像信号と合成後、映像信号データと共に
誤り訂正符号化処理されて変調器１０で変調され、磁気
記録再生系１１に記録される。記録トラックパターン
は、従来と同様である。The operation of the digital recording / reproducing apparatus configured as above will be described. First, the normal recording operation will be described. The input video signal is A / D converted by the video signal A / D converter 1, high-efficiency encoded by the high-efficiency encoder 2, and then input to the first multiplexer 7 through the switching SW 41. The audio signal is A / D converted by the audio signal A / D converter 3, and then time-axis compression processing is performed by the audio signal recording processor 4 to perform switching SW4.
It is input to the first multiplexer 7 via 0. Further, the additional information generator 5 generates a time (year / month / day) code at which recording is started, a sampling frequency code at the time of A / D conversion of an audio signal, a video field / frame number, etc. It is input to the multiplexer 7. In the first multiplexer 7, the additional information related to each of the input video signal data and audio signal data is combined with the video signal data and audio signal data such that the additional information data follows each additional information data portion. (In the present embodiment, it is described that the additional information data is combined so as to follow each data array, but it may be multiplexed on each data). The audio signal data combined with the additional information data is encoded by the audio signal error correction encoder 8 and combined with the video signal by the error correction encoder 9 and then subjected to error correction encoding together with the video signal data for modulation. It is modulated by the device 10 and recorded in the magnetic recording / reproducing system 11. The recording track pattern is the same as the conventional one.
【００１４】ここでダビング入力による記録を説明す
る。第一分離器６に入力された信号は、映像信号デー
タ、音声信号データと付加情報データに分けられて、映
像信号データは切換ＳＷ４１、音声信号データは切換Ｓ
Ｗ４０、付加情報データは切換ＳＷ４２を経て第一多重
器に入力する。以降の動作は、通常記録動作と同様であ
る。Recording by dubbing input will now be described. The signal input to the first separator 6 is divided into video signal data, audio signal data and additional information data. The video signal data is switched SW41 and the audio signal data is switched S.
W40 and the additional information data are input to the first multiplexer via the switching SW42. The subsequent operation is the same as the normal recording operation.
【００１５】次に再生動作を説明する。磁気記録再生系
１１から再生されたデータを復調器１２で復調し、誤り
訂正復号化器１３で再生信号の誤りを訂正後、映像信号
データは、第二分離器１５に入力する。音声信号データ
は、音声信号誤り訂正復号化器１４で再び誤り訂正処理
を施した後、第二多重器２６へ入力する。第二分離器１
５では、記録処理時に各信号データと合成された付加情
報データを分離する。分離された付加情報データは、付
加情報処理器１６に送られ、映像情報もしくは音声情報
が記録された時刻の表示、音声信号標本化周波数の発生
等を行う。付加情報データを分離した映像信号データ
は、第一修整器１９で誤り訂正復号化器１３で訂正でき
なかった誤りを修整して、高能率復号化器２０で高能率
復号化され、映像信号Ｄ／Ａ変換器２１でアナログ映像
信号に変換して、合成器２２を経て出力される。付加情
報データを分離した音声信号データは、第二修整器２３
で修整を行い音声信号再生処理器２４で時間軸伸張処理
後、音声信号Ｄ／Ａ変換器２５で付加情報処理器１６で
発生させた音声信号標本化周波数で、アナログ音声信号
に変換後出力される。また、ダビング出力は、第二分離
器１５で分離された付加情報データ、第一修整器１９で
修整された映像信号データ、第二修整器２３で修整され
た音声信号データを第二多重器２６で並び換えを行い、
従来と同様に図５に示すようなデータ配列で出力する。Next, the reproducing operation will be described. The data reproduced from the magnetic recording / reproducing system 11 is demodulated by the demodulator 12, the error of the reproduced signal is corrected by the error correction decoder 13, and the video signal data is input to the second separator 15. The voice signal data is input to the second multiplexer 26 after being subjected to error correction processing again by the voice signal error correction decoder 14. Second separator 1
In step 5, the additional information data combined with each signal data during the recording process is separated. The separated additional information data is sent to the additional information processor 16 to display the time when the video information or the audio information is recorded and to generate the audio signal sampling frequency. The video signal data obtained by separating the additional information data is corrected by the first correction unit 19 for errors that could not be corrected by the error correction decoder 13, and is highly efficiently decoded by the high efficiency decoder 20 to obtain the video signal D. The A / A converter 21 converts the analog video signal and outputs the analog video signal via the synthesizer 22. The audio signal data obtained by separating the additional information data is the second retouching device 23.
The audio signal reproduction processor 24 performs time-axis expansion processing, and the audio signal D / A converter 25 converts the audio signal sampling frequency generated by the additional information processor 16 into an analog audio signal and outputs the analog audio signal. It Further, the dubbing output includes the additional information data separated by the second separator 15, the video signal data modified by the first modifier 19 and the audio signal data modified by the second modifier 23 in the second multiplexer. Sort by 26,
As in the conventional case, the data array is output as shown in FIG.
【００１６】次に再生されたデータにコピープロテクト
コードが入っていた場合について説明する。磁気記録再
生系１１から第二多重器２６での各信号データの出力ま
では前述と同様なので省略する。Next, the case where the reproduced data has a copy protection code will be described. Since the steps from the magnetic recording / reproducing system 11 to the output of each signal data in the second multiplexer 26 are the same as described above, the description thereof will be omitted.
【００１７】第二分離器１５で分離された付加情報デー
タに、コピープロテクトコード検出器１７でコピープロ
テクトコードを検出すると、第二多重器制御器２７に検
出信号が出力される。第二多重器制御器２７は、検出し
たコピープロテクトコードが映像信号用、音声信号用ど
ちらかを判断して各々に対して制御記号を出力する。第
二多重器２６は、第二多重器制御器２７の出力信号が入
力されると、高能率符号化状態の映像信号と時間軸圧縮
状態の音声信号の出力が停止する。また、コピープロテ
クトコード検出器１７の出力は、コピープロテクト信号
発生器１８に送られる。コピープロテクト信号発生器１
８は、Ｄ／Ａ変換されたアナログ映像信号に合成する。
例えば、アナログ映像信号の垂直走査期間で垂直同期信
号以降の特定の水平期間に１フレーム期間毎にペデスタ
ルレベルの変化する信号を発生する。このような信号を
合成することにより、合成した映像信号を入力とするＶ
ＴＲの自動利得制御回路（ＡＧＣ回路）を誤動作させ
る。コピープロテクト信号発生器１８で発生した信号
を、合成器２２でアナログ映像信号と合成させて、この
状態でＴＶモニタへの出力とする。図２は、コピープロ
テクト信号発生器１８で発生した信号を合成器２２でア
ナログ映像信号と合成させた映像信号の波形図である。When the copy protect code detector 17 detects a copy protect code in the additional information data separated by the second separator 15, a detection signal is output to the second multiplexer controller 27. The second multiplexer controller 27 determines whether the detected copy protection code is for a video signal or an audio signal and outputs a control symbol to each. When the output signal of the second multiplexer controller 27 is input, the second multiplexer 26 stops outputting the video signal in the high efficiency coding state and the audio signal in the time axis compression state. The output of the copy protect code detector 17 is sent to the copy protect signal generator 18. Copy protect signal generator 1
8 is combined with the D / A converted analog video signal.
For example, in the vertical scanning period of the analog video signal, a signal whose pedestal level changes every frame period is generated in a specific horizontal period after the vertical synchronizing signal. By synthesizing such signals, V which receives the synthesized video signal as an input
The automatic gain control circuit (AGC circuit) of TR is malfunctioned. The signal generated by the copy protect signal generator 18 is combined with the analog video signal by the combiner 22 and is output to the TV monitor in this state. FIG. 2 is a waveform diagram of a video signal in which the signal generated by the copy protect signal generator 18 is combined with the analog video signal by the combiner 22.
【００１８】映像信号データと音声信号データは、それ
ぞれ独立にコピープロテクトコードを設定することが可
能なため、コピープロテクトコード検出器１７で検出し
たコードにより第二多重器２６の出力で映像信号デー
タ、または、音声信号データだけ停止できることは言う
までもない。またアナログ映像信号に合成する信号とし
て、１水平走査期間毎に色副搬送波の周波数を、例えば
±２００Hz変化させて（本発明の実施例では±２００Hz
としたが任意の値でも良い）色信号の基準搬送波信号と
することにより、この信号を受けたＶＴＲの自動位相制
御回路（ＡＰＣ回路）を誤動作させても良い。Since the video signal data and the audio signal data can be independently set with copy protect codes, the code detected by the copy protect code detector 17 is used to output the video signal data at the output of the second multiplexer 26. Needless to say, it is possible to stop only the audio signal data. As a signal to be combined with the analog video signal, the frequency of the color subcarrier is changed, for example, by ± 200 Hz for each horizontal scanning period (± 200 Hz in the embodiment of the present invention.
However, any value may be used.) By using the reference carrier signal of the color signal, the automatic phase control circuit (APC circuit) of the VTR that receives this signal may malfunction.
【００１９】[0019]
【発明の効果】以上説明したように本発明によれば、著
作権で保護されているビデオソフト再生に対して、簡単
な構成でディジタル状態のダビング出力の停止を行うと
同時に、アナログ映像信号にもコピープロテクト処理を
施すことができる。As described above, according to the present invention, for the reproduction of copyright-protected video software, the dubbing output in the digital state is stopped with a simple structure, and at the same time, the analog video signal is converted. Can also be copy protected.
【図１】本発明の一実施例のディジタル記録再生装置の
構成を示すブロック図FIG. 1 is a block diagram showing the configuration of a digital recording / reproducing apparatus according to an embodiment of the present invention.
【図２】本発明の一実施例のディジタル記録再生装置に
よりコピープロテクト信号を合成した映像信号波形図FIG. 2 is a video signal waveform diagram in which copy protect signals are combined by a digital recording / reproducing apparatus according to an embodiment of the present invention.
【図３】従来のディジタル記録再生装置の構成を示すブ
ロック図FIG. 3 is a block diagram showing a configuration of a conventional digital recording / reproducing apparatus.
【図４】従来のディジタル記録再生装置での記録トラッ
クパターン図FIG. 4 is a recording track pattern diagram in a conventional digital recording / reproducing apparatus.
【図５】従来のディジタル記録再生装置におけるディジ
タルダビング信号のデータ配列を示したデータ配列図FIG. 5 is a data array diagram showing a data array of a digital dubbing signal in a conventional digital recording / reproducing apparatus.
１ 映像信号Ａ／Ｄ変換器 ２ 高能率符号化器 ３ 音声信号Ａ／Ｄ変換器 ４ 音声信号記録処理器 ５ 付加情報発生器 ６ 第一分離器 ７ 第一多重器 ８ 音声信号誤り訂正符号化器 ９ 誤り訂正符号化器 １０ 変調器 １１ 磁気記録再生系 １２ 復調器 １３ 誤り訂正復号化器 １４ 音声信号誤り訂正復号化器 １５ 第二分離器 １６ 付加情報処理器 １７ コピープロテクトコード検出器 １８ コピープロテクト信号発生器 １９ 第一修整器 ２０ 高能率復号化器 ２１ 映像信号Ｄ／Ａ変換器 ２２ 合成器 ２３ 第二修整器 ２４ 音声信号再生処理器 ２５ 音声信号Ｄ／Ａ変換器 ２６ 第二多重器 ２７ 第二多重器制御器 ４０ 切換ＳＷ ４１ 切換ＳＷ ４２ 切換ＳＷ 1 video signal A / D converter 2 high efficiency encoder 3 audio signal A / D converter 4 audio signal recording processor 5 additional information generator 6 first separator 7 first multiplexer 8 audio signal error correction code Coder 9 error correction encoder 10 modulator 11 magnetic recording / reproducing system 12 demodulator 13 error correction decoder 14 voice signal error correction decoder 15 second separator 16 additional information processor 17 copy protection code detector 18 Copy protect signal generator 19 First modifier 20 High efficiency decoder 21 Video signal D / A converter 22 Synthesizer 23 Second modifier 24 Audio signal reproduction processor 25 Audio signal D / A converter 26 Second multi Heavy equipment 27 Second multiplexer controller 40 Switching SW 41 Switching SW 42 Switching SW
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｈ０４Ｌ 9/10 9/12 Ｈ０４Ｎ 5/92 Ｈ 4227−5Ｃ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Internal reference number FI Technical display location H04L 9/10 9/12 H04N 5/92 H 4227-5C
Claims (5)
ディジタル音声信号を記録再生するディジタル記録再生
装置であって、再生されたデータからコピープロテクト
コードを検出する検出手段と、前記高能率符号化された
圧縮状態のディジタル映像信号データとディジタル音声
信号を外部機器へ送受信するディジタル入出力手段と、
前記コピープロテクトコードにより前記ディジタル入出
力手段を制御する制御手段と、前記検出したコピープロ
テクトコードにより特定のパターン信号を発生させる信
号発生手段と、前記再生されたデータを高能率復号化し
て得たアナログ映像信号に前記パターン信号を合成する
手段により、アナログ映像信号にコピープロテクトをか
けて出力することを特徴とするディジタル記録再生装
置。1. A digital recording / reproducing apparatus for recording / reproducing a high-efficiency-encoded digital video signal and a digital audio signal, the detecting means detecting a copy protect code from the reproduced data, and the high-efficiency encoding. Digital input / output means for transmitting / receiving the compressed digital video signal data and digital audio signal to / from an external device,
Control means for controlling the digital input / output means by the copy protect code, signal generating means for generating a specific pattern signal by the detected copy protect code, and analog obtained by highly efficient decoding of the reproduced data. A digital recording / reproducing apparatus characterized in that an analog video signal is copy-protected and outputted by a means for synthesizing the pattern signal with the video signal.
りディジタル入出力手段におけるディジタル映像信号の
出力を制御することを特徴とする請求項１記載のディジ
タル記録再生装置。2. The digital recording / reproducing apparatus according to claim 1, wherein the control means controls the output of the digital video signal in the digital input / output means by the copy protect code.
りディジタル入出力手段におけるディジタル音声信号の
出力を制御することを特徴とする請求項１記載のディジ
タル記録再生装置。3. The digital recording / reproducing apparatus according to claim 1, wherein the control means controls the output of the digital audio signal in the digital input / output means by the copy protect code.
信号を合成した映像信号を入力とするアナログまたはデ
ィジタル記録再生装置の映像信号の振幅を制御する手段
の動作を不全にするような信号であることを特徴とする
請求項１記載のディジタル記録再生装置。4. A signal to be combined with an analog video signal, which causes a failure of the operation of the means for controlling the amplitude of the video signal of an analog or digital recording / reproducing apparatus which receives as input a video signal obtained by combining a specific signal. The digital recording / reproducing apparatus according to claim 1, wherein the digital recording / reproducing apparatus is provided.
信号を合成した映像信号を入力とするアナログまたはデ
ィジタル記録再生装置の映像信号の色相を制御する手段
の動作を不全にするような信号であることを特徴とする
請求項１記載のディジタル記録再生装置。5. A signal to be combined with an analog video signal is a signal which causes a failure in the operation of the means for controlling the hue of the video signal of an analog or digital recording / reproducing apparatus which receives a video signal obtained by combining a specific signal as an input. The digital recording / reproducing apparatus according to claim 1, wherein the digital recording / reproducing apparatus is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04156553A JP3128959B2 (en) | 1992-06-16 | 1992-06-16 | Digital recording and playback device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04156553A JP3128959B2 (en) | 1992-06-16 | 1992-06-16 | Digital recording and playback device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05347744A true JPH05347744A (en) | 1993-12-27 |
| JP3128959B2 JP3128959B2 (en) | 2001-01-29 |
Family
ID=15630316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04156553A Expired - Lifetime JP3128959B2 (en) | 1992-06-16 | 1992-06-16 | Digital recording and playback device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3128959B2 (en) |
Cited By (5)
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|---|---|---|---|---|
| KR19980025007A (en) * | 1996-09-27 | 1998-07-06 | 이데이 노부유키 | Copyright protection method and protection system of digital data |
| US6212329B1 (en) | 1994-02-22 | 2001-04-03 | Victor Company Of Japan | Method of protection of data reproduction, and reproduction apparatus providing protection of data reproduction |
| KR100465354B1 (en) * | 1995-08-11 | 2005-04-13 | 소니 가부시끼 가이샤 | Signal transmission method |
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-
1992
- 1992-06-16 JP JP04156553A patent/JP3128959B2/en not_active Expired - Lifetime
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|---|---|
| JP3128959B2 (en) | 2001-01-29 |
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