JPH06133334A - Recording and reproducing device for edtv television signal - Google Patents

Recording and reproducing device for edtv television signal

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Publication number
JPH06133334A
JPH06133334A JP4278347A JP27834792A JPH06133334A JP H06133334 A JPH06133334 A JP H06133334A JP 4278347 A JP4278347 A JP 4278347A JP 27834792 A JP27834792 A JP 27834792A JP H06133334 A JPH06133334 A JP H06133334A
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Japan
Prior art keywords
signal
recording
edtv
television
system
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JP4278347A
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Japanese (ja)
Inventor
Yasuhiro Hirano
Masahiro Kageyama
Norihiro Suzuki
裕弘 平野
昌広 影山
教洋 鈴木
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Hitachi Ltd
株式会社日立製作所
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Priority to JP4278347A priority Critical patent/JPH06133334A/en
Publication of JPH06133334A publication Critical patent/JPH06133334A/en
Application status is Pending legal-status Critical

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Abstract

PURPOSE:To record a video signal with high picture quality and high definition for the letter box system EDTV and the NTSC system by implementing demodulation processing to a vertical and a horizontal reinforcement signal in the letter box system EDTV system and implementing the masking processing in the NTSC system. CONSTITUTION:The demodulation processing using a vertical reinforcement signal and a horizontal reinforcement signal is applied to a television signal of the letter box EDTV system to convert the signal into a picture signal series and the converted picture signal series is recorded. Furthermore, the two kinds of the video recording modes as the standard mode and the wide mode corresponding to two kinds of patterns whose aspect ratio is 4:3 and 16:9 are provided and the masking processing suitable for each mode in the television signal of the NTSC and the letter box system EDTV is applied to the television signal, it is converted into the picture signal series and recorded. That is, the input television signal of the letter box system EDTV is a standard form signal without jitter and the superimposed vertical and horizontal reinforcement signals are correctly demodulated to the original high frequency component.

Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】本発明はテレビジョン信号の記録再生装置に係り、特に、現行NTSC方式、およびレターボックス方式EDTVのいずれのテレビジョン信号も録画するアナログ記録方式による記録再生装置に関する。 The present invention relates relates to a recording and reproducing apparatus of a television signal, in particular, the current NTSC system, and a recording and reproducing apparatus according to an analog recording system also record any television signal letterbox method EDTV.

【0002】 [0002]

【従来の技術】現行NTSC方式との両立性を保有して、画面のワイド化・高精細化・高画質化を図り、より高品質な臨場感のあるテレビ画像を提供するEDTVの開発が進められている。 BACKGROUND OF THE INVENTION possess compatibility with current NTSC system, achieving a wide and high definition and high image quality of the screen, the development of EDTV is underway to provide a television image that is more high-quality realism It is.

【0003】このうち、レターボックス方式EDTV [0003] Among them, the letter box system EDTV
は、アスペクト比が4対3とは異なる横長なアスペクト比の横長画像を画面の上下に無画部領域を設けて送受像するもので、我国における次世代のテレビ方式として検討が進められている。 Is intended that the aspect ratio is feeding the image receiving provided non-image area on the top and bottom of the screen horizontally long images of different horizontal aspect ratio is 4: 3, considered as a next-generation television system has been promoted in Japan .

【0004】このレターボックス方式EDTVでは、画面の上下の無画部領域には垂直方向の解像度の向上を図るための垂直補強信号,横長画像の領域には水平方向の解像度の向上を図るための水平補強信号などを重畳してテレビジョン信号を構成する。 [0004] In the letter box scheme EDTV, vertical reinforcing signal for the upper and lower non-picture area to improve the vertical resolution of the screen, to improve the horizontal resolution of the region of the horizontally long image constituting the television signal by superimposing the like horizontal reinforcement signal. そして、受像側ではこれらの垂直補強信号,水平補強信号を用いて、高精細なテレビ画像を再生する。 Then, these vertical reinforcement signal is an image receiving side, using the horizontal reinforcement signal to reproduce the high-definition television images.

【0005】このレターボックス方式EDTVのテレビジョン信号は、現行NTSC方式のテレビジョン信号と伝送路両立性,受像機両立性がある。 [0005] television signals in the letter box scheme EDTV the transmission lines compatible with the television signal of the current NTSC system, there is a receiver compatible. このため、現行の受像機で受信することができ、また、現行の家庭用のV For this reason, can be received in the current receiver, also, V for the current home
CRなどに録画することも一応可能である。 It is also possible prima facie to be recorded, such as the CR. すなわち、 That is,
ある程度の画質低下を許容すれば、現行家庭用VCRなどの従来技術によるアナログ記録方式の記録再生装置でもレターボックス方式EDTVのテレビジョン信号の録画はできる。 If allowed a certain degree of degradation in image quality, the video recording of the letter box system EDTV of the television signal in the recording and reproducing apparatus of the analog recording method according to the prior art, such as the current home VCR can.

【0006】 [0006]

【発明が解決しようとする課題】上記の従来技術の記録再生装置で再生されるテレビジョン信号はジッタを含み、また、色副搬送波の位相関係が正規の規格とは異なる非標準の信号である。 [SUMMARY OF THE INVENTION A television signal reproduced by the recording and reproducing apparatus of the prior art comprises a jitter, also the phase relationship of the color subcarrier is at a different non-standard signal to the normal standards . 一方、レターボックス方式ED On the other hand, the letter box scheme ED
TVでは受像側での垂直補強信号,水平補強信号の復調に、時系列変換,時間軸伸長,フィールド間演算などの信号処理を行う必要がある。 TV in the vertical reinforcement signal at receiving side, the demodulation of the horizontal reinforcement signal, the time series conversion, the time-scale expansion, it is necessary to perform signal processing such as inter-field operation. しかしながら、従来技術の記録再生装置では再生信号にジッタなどが含まれているために上述の信号処理を行うことは不可能に近く、垂直補強信号,水平補強信号を正しく復調することは困難になる。 However, it is difficult nearly impossible to perform signal processing described above, demodulated vertical reinforcing signal, a horizontal reinforcement signal correctly it to contain such jitter in the reproduction signal in the prior art recording and reproducing apparatus . したがって、従来技術による録画ではこれらの補強信号は用いずに画像再生を行うことになり、解像度の低下などの画質劣化が発生するという問題がある。 Therefore, in the recording according to the prior art will be performing image reproduction without these reinforcing signals, image quality deterioration such as a decrease in resolution is a problem that occurs.

【0007】本発明の目的は、上記の問題点を解決し、 [0007] It is an object of the present invention is to solve the above-mentioned problems,
レターボックス方式EDTVのテレビジョン信号を高解像度の画質で再生し、また、NTSC方式のテレビジョン信号も録画できるアナログ記録方式の記録再生装置を提供することにある。 The television signal of the letter box scheme EDTV reproduced in high resolution image quality, also to provide a recording and reproducing apparatus of the analog recording type television signal of the NTSC system can also be recorded.

【0008】 [0008]

【課題を解決するための手段】上記目的を達成するため、本発明においてはレターボックス方式EDTVのテレビジョン信号に対して垂直補強信号,水平補強信号を用いた復調処理を行った画像信号系列に変換し、この変換した画像信号系列を記録する手段を採用した。 To achieve the above object, according to an aspect of the vertical reinforcement signal to the television signal of the letter box scheme EDTV In the present invention, the image signal sequence performing demodulation processing using the horizontal reinforcement signal It converted, employing the means for recording the converted image signal sequence. また、 Also,
本発明においては、アスペクト比が4対3,16対9の画面に対応した標準モード,ワイドモードの2種類の録画モードを設け、NTSC,レターボックス方式EDT In the present invention, a standard mode in which an aspect ratio corresponding to 4 pairs 3 and 16: 9 screen, two recording modes for the wide mode is provided, NTSC, Letterbox method EDT
Vのテレビジョン信号に対し各モードに適したマスキング処理を行った画像信号系列に変換して記録する手段を採用した。 Employing means for recording by converting to a television signal of the V in the image signal sequence performing masking processing suitable for each mode.

【0009】 [0009]

【作用】レターボックス方式EDTVの入力テレビジョン信号はジッタのない標準形態の信号であるため、重畳された垂直補強信号,水平補強信号は元の垂直高域成分,水平高域成分に正しく復調することができる。 [Action] letterbox mode input television signal EDTV is for a signal of standard form with no jitter, the superimposed vertical reinforcing signal, the horizontal reinforcement signal based on the vertical high-frequency component, to correctly demodulate the horizontal high frequency component be able to. そして、これら高域成分を横長画像部の信号に加算して得られる高精細な画像信号系列に対して記録・再生を行う。 Then, the recording and playback for high definition image signal sequence obtained by adding these high frequency components in the signal of the horizontally long image portion.
したがって、従来技術とは異なり、本発明においては再生信号に対して垂直補強信号,水平補強信号の復調処理が不要であり、ジッタを含むものの高精細な画像信号系列を再生することができる。 Therefore, unlike the prior art, in the present invention the vertical reinforcement signal to the reproduced signal, a demodulation processing of the horizontal reinforcement signal is not required, it is possible to reproduce a high-definition image signal sequence to include jitter.

【0010】また、本発明においては、所有する受像機のアスペクト比に応じて標準モード,ワイドモードのいずれかを選択して録画するため、アスペクト比が4対3,16対9のいずれの受像機でも最適な形態でNTS [0010] In the present invention, the standard mode in accordance with the aspect ratio of the receiver owned, for recording by selecting one of the wide mode, one of the receiving of the aspect ratio of 4 to 3, 16: 9 NTS in an optimal form in the machine
C,レターボックス方式EDTVの録画画像を受像することができる。 C, it is possible to receiving the recorded images of the letter box system EDTV.

【0011】 [0011]

【実施例】本発明の一実施例を図1に示す全体ブロック構成図により説明する。 BRIEF DESCRIPTION The overall block diagram shown in FIG. 1 an embodiment of the present invention.

【0012】入力テレビジョン信号VS(NTSC又はレターボックス方式EDTV信号)は、A/D変換部1 [0012] The input television signal VS (NTSC or letter box system EDTV signal), A / D conversion section 1
で例えばNTSC方式の色副搬送波fscの4倍の周波数で標本化を行い、ディジタルの信号VSDに変換する。 In example performed sampled at 4 times the frequency of the color subcarrier fsc of the NTSC system is converted into a digital signal VSD.

【0013】補助信号復調部2では、レターボックス方式EDTVの画面の上下の無画部領域に重畳された垂直補強信号の分離,復調の信号処理を行い、輝度の垂直高域成分VHを復調する。 [0013] In the auxiliary signal demodulator 2 performs separation of the letterbox method EDTV screen and below the no-picture area in superimposed vertical reinforcement signal, the signal processing of the demodulation and demodulates the vertical high-frequency component VH of the luminance .

【0014】画信号復調部3では、輝度・色信号分離, [0014] Painting The signal demodulation unit 3, the luminance and color signals separated,
色復調、およびレターボックス方式EDTVの横長画像部に重畳された水平補強信号の分離,復調の信号処理を行い、輝度信号Y,色差信号IQ、および色信号Cを生成する。 Color demodulation, and separation of the letterbox mode Horizontal image unit horizontal reinforcement signal which is superimposed on the EDTV, performs signal processing of the demodulated luminance signal Y, color difference signals IQ, and generates color signals C.

【0015】3〜4変換部4では、アスペクト比16対9の全画面にテレビジョン方式EDTVの横長画像部を表示するため、輝度信号に対して垂直高域成分VHを使用した走査線数の3〜4変換の信号処理を行う。 [0015] In the 3-4 conversion unit 4, for displaying a landscape image of the television system EDTV on the entire screen of the aspect ratio 16: 9, the number of scanning lines using the vertical high-frequency component VH to the luminance signal performs signal processing 3-4 conversion. そして、N Then, N
TSC方式と同一な走査形態(走査線数525本,30 TSC scheme and same scanning mode (525 scanning lines, 30
フレーム,2:1インタレース走査)の有効画素走査線数480本の輝度信号YWEを生成する。 Frame 2: generating a 1 interlaced luminance signal YWE effective pixel scanning lines 480 of the scan). また、3〜4 In addition, 3-4
変換部7では色差信号I,Qに対して走査線数の3〜4 Color difference signals I, the conversion unit 7, 3-4 number of scanning lines with respect to Q
変換、および色変調の信号処理を行い、NTSC方式と同一な走査形態の有効画素走査線数が480本の色信号CWEを生成する。 Conversion, and performs signal processing of the color modulation, the effective pixel number of scanning lines of the NTSC system the same scanning mode produces 480 color signal CWE.

【0016】時間軸圧縮部5では、アスペクト比16対9の画面の両サイドにマスキング領域を設けてNTSC [0016] In time-base compression unit 5, and a masking area is provided on both sides of the screen of aspect ratio 16: 9 NTSC
方式のアスペクト比4対3の画像を表示するため、水平方向の画素数の4〜3変換、および時間軸圧縮(3/ For displaying an image of the aspect ratio of 4: 3 of scheme 4 to 3 conversion of the number of pixels in the horizontal direction, and the time warp (3 /
4),時系列変換,マスキング処理などの信号処理を行い、NTSC方式に対応する輝度信号YWN,色信号C 4), the time series conversion, performs signal processing such as masking, luminance signal YWN corresponding to the NTSC system, the color signal C
WNを生成する。 To generate a WN.

【0017】一方、マスキング部6では、アスペクト比4対3の画面の上下の無画部領域をマスキング処理したレターボックス方式EDTVの横長画像を表示するため、輝度信号に対して画面の上下の無画部領域のマスキング処理を行い、NTSC方式と同一な走査形態の有効画素走査線数が360本の輝度信号YSEを生成する。 Meanwhile, the masking unit 6, for displaying a landscape image of the aspect ratio of 4: 3 of the upper and lower non-picture area letterbox method EDTV that masking of the screen, free of the top and bottom of the screen with respect to the luminance signal It performs masking processing of the view area, the effective pixel number of scanning lines of the NTSC system the same scanning mode to generate a 360 pieces of luminance signal YSE.

【0018】選択回路8では、入力テレビジョン信号がレターボックス方式EDTVの場合には信号YWE,C [0018] In the selection circuit 8, the input television signal is a letter box method in the case of the EDTV signal YWE, C
WE,NTSC方式の場合には信号YWN,Y,CWN WE, the signal in the case of the NTSC system YWn, Y, CWN
を選択してそれぞれ信号YW,YS,CWとして出力する。 Each signal YW Select, YS, and outputs it as CW. なお、この選択制御は、識別部9において入力テレビジョン信号の識別信号の有無を検出して生成する制御信号VSMDにより行う(レターボックス方式EDTV Incidentally, the selection control is performed by control signals VSMD be generated by detecting the presence or absence of the identification signal of the input television signal in the identification section 9 (letterbox method EDTV
のテレビジョン信号ではNTSC方式との判別が可能な識別信号が付加されている。 The television signal is added identification signal capable to distinguish between the NTSC system. )。 ).

【0019】一方、選択回路10では、使用者が所有する受像機の形態に応じて選択する標準モードかワイドモードの録画モード信号RMDにより、アスペクト比16 Meanwhile, the selecting circuit 10, the recording mode signal RMD standard mode or wide mode for the user to select depending on the form of receiver owned, aspect ratio 16
対9の受像機に対応するワイドモードでは信号YW,C Signal YW is in wide mode corresponding to pairs 9 of receiver, C
W、アスペクト比4対3の受像機に対応する標準モードでは信号YS,Cを選択して出力する。 W, or the standard mode corresponding to the aspect ratio of 4: 3 of the receiver and outputting the selection signal YS, the C.

【0020】これらの信号は、D/A変換部11でアナログ信号RY,RCに変換し、記録変調部12に入力する。 [0020] These signals are converted by the D / A converter 11 analog signals RY, the RC, is input to the recording modulator 12. また、入力テレビジョン信号がSモード信号(輝度信号と色信号の2種類の信号で構成)の場合には、この信号が記録変調部12に入力される。 The input television signal in the case of S-mode signal (composed of two kinds of signals of a luminance signal and color signal), this signal is input to the recording modulator 12.

【0021】記録変調部12では、従来技術と同様なアナログ記録の例えばカラーアンダ方式の記録を行うに必要な所定の信号処理を行う。 [0021] In the recording modulation unit 12 performs predetermined signal processing required for the recording of example the color subcarrier systems of the prior art similar to analog recording. そして、記録アンプ13を通して記録媒体14に信号を記録する。 Then, recording signals to the recording medium 14 through the recording amplifier 13.

【0022】以上で同図(a)に示す記録部の説明を終え、つぎに同図(b)の再生部を説明する。 The finished description of the recording unit shown in the diagram (a) above, will now be described reproduction of FIG (b). 記録媒体1 Recording medium 1
4より再生した信号はプリアンプ15で増幅し、再生復調部16に入力する。 Signal reproduced from 4 was amplified in a preamplifier 15 and input to the reproducing demodulating portion 16.

【0023】再生復調部16では、記録部とは逆の所定の信号処理を行い、輝度信号Y,色信号Cを復調する。 [0023] In the reproduction demodulator 16, performs predetermined signal processing opposite to the recording unit, and demodulates the luminance signal Y, a color signal C.
そして、加算回路17では輝度信号と色信号を加算して、コンポジット形態の信号に変換する。 Then, by adding the luminance signal and the color signal in the adder circuit 17 into a signal of a composite form.

【0024】プロセス部18,19では、所定の同期信号,バースト信号、などの付加を行い、コンポジット形態の出力テレビジョン信号VSO,Sモード信号の出力テレビジョン信号をつくる。 [0024] In process 18, 19, performs a predetermined synchronization signal, the addition of the burst signal, such as, a composite form of the output television signal VSO, produce an output television signal S mode signal.

【0025】図2は、本発明において得られる録画画像の形態図である。 [0025] Figure 2 is a form view of recorded images obtained in the present invention. アスペクト比4対3の受像機に対応する標準モードによる録画では、NTSC方式のテレビジョン信号は有効画素走査線数が480本の画像,レターボックス方式EDTVのテレビジョン信号は画面の上下を特定の信号でマスキング処理した有効画素走査線数が360本の画像で再生する。 In recording by the standard mode corresponding to the aspect ratio of 4: 3 of the receiver, NTSC system television signals effective pixel number of scanning lines is 480 images, the television signal of the letter box scheme EDTV screen up and down certain of effective pixel number of scanning lines of masked processed by the signal is reproduced in 360 pieces of the image.

【0026】一方、アスペクト比16対9の受像機に対応するワイドモードよる録画では、NTSC方式のテレビジョン信号は画面の両サイドを特定の信号でマスキング処理した有効画素走査線数が480本の画像,レターボックス方式EDTVのテレビジョン信号は有効画素走査線数が480本の画像で再生する。 On the other hand, the recording with wide mode corresponding to the receiver of an aspect ratio 16: 9, the television signal of the NTSC system is effective pixel number of the scanning lines and masking in a particular signal to both sides of screen 480 image, the television signal of the letter box scheme EDTV the effective pixel number of scanning lines is reproduced with 480 images.

【0027】なお、いずれのモードも、走査形態はNT [0027] It should be noted, none of the mode, scanning mode NT
SC方式と同一の走査線数525本,30フレーム, SC method same 525 scanning lines and 30 frames,
2:1のインタレース走査である。 2: 1 interlaced scanning.

【0028】以下では、本実施例における各ブロック部について説明する。 [0028] In the following, a description will be given of each block unit in this embodiment.

【0029】はじめに、3〜4変換部について図3〜図5により説明する。 [0029] First, described by FIGS about 3-4 conversion unit. 図3は、走査線数の3〜4変換の信号処理の概要を示したものである。 Figure 3 is a diagram showing an outline of signal processing 3-4 conversion of the number of scanning lines. 同図(a)に示す様に、有効画素走査線数が360本(以下360I系と略称)の3本の走査線x,y,zの信号をもとに、有効画素走査線数が480本(以下480I系と略称)の4本の走査線a,b,c,dの信号を生成する。 As shown in the figure (a), 3 scanning lines x the effective pixel number of scanning lines is 360 present (hereinafter 360I system abbreviated), y, on the basis of a signal z, the number of effective pixels scanning lines 480 four scan lines a of this (hereinafter 480I system abbreviated), b, c, to generate a signal d. この走査線の3〜4変換に使用する変換マトリクスの一例を同図(b)に示す。 An example of a transformation matrix to be used for 3-4 conversion of the scanning lines shown in FIG. (B). 輝度信号の低域成分に関しては、レターボックス方式EDTVの送像側の4〜3変換で使用する変換行列の逆行列と走査線x,y,zおよび垂直高域成分VHの信号とのマトリクス演算によって走査線a, For the low-frequency component of the luminance signal, the matrix calculation of the inverse matrix of the transformation matrix used in 4-3 conversion Sozo side letterbox method EDTV the scan lines x, y, and signal z and the vertical high-frequency component VH scan line by a,
b,c,dの信号成分を生成する。 b, c, and generates a signal component of d. 一方、輝度信号の高域成分(1MHz以上)と色差信号に関しては、例えば直線補間の特性の変換マトリクスによる演算で走査線a,b,c,dの信号成分を生成する。 On the other hand, with respect to high-frequency components (1 MHz or higher) and a color difference signal of the luminance signal, for example, the scanning lines in operation by the transformation matrix properties of the linear interpolation a, b, c, and generates a signal component of d.

【0030】図4は、輝度信号に対する3〜4変換部4 FIG. 4 is 3-4 conversion unit 4 with respect to the luminance signal
の一実施例を示し、同図(a)は構成、(b)は信号処理の動作説明図である。 Of shows an example, FIG. (A) the structure, (b) is an operation explanatory diagram of the signal processing.

【0031】RAM20には、信号Y(360I系)の走査線x,y,zの信号がWT動作によって書き込まれる。 [0031] RAM20, the signal Y scanning lines (360I system) x, y, signal z is written by the WT operation. 一方、この読み出しは4走査線期間を周期に走査線x,y,zの信号を読み出すRD動作で行い、信号YR On the other hand, the reading is performed four scan line interval scan line x to cycle, y, in RD operation of reading a signal z, the signal YR
Dを生成する。 To generate a D. そして、変換マトリクス演算部21,2 The transformation matrix calculation unit 21,2
2ではそれぞれ図3(b)の(2)、および(1)に示した変換マトリクスによる演算を行う。 Figure 3 (b) in 2, respectively (2), and performs the calculation by the conversion matrix shown in (1). そして、HPF Then, HPF
回路23では高域成分(1MHz以上)、LPF回路2 Circuit high frequency component (1 MHz or higher) at 23, LPF circuit 2
4では低域成分(1MHz以下)を抽出し、加算回路2 In 4 extracts the low-frequency component (1 MHz or less), the adding circuit 2
5で両者を加算する。 5 is added to both in. そして、走査線の3〜4変換により480I系に変換した輝度信号YWEを生成する。 Then, to generate a luminance signal YWE converted to 480I system by 3-4 conversion of the scan lines.

【0032】図5は、色差信号に対する3〜4変換部7 [0032] FIG. 5 is a 3-4 conversion unit for the color difference signals 7
の一実施例である。 Of which is an embodiment. 色差信号I,Q(360I系)の信号に対して、RAM20,変換マトリクス演算部21で図4と同様な信号処理の動作を行い、480I系に変換した色差信号IW,QWを生成する。 Color difference signals I, to the signal of the Q (360I-based), RAM 20, performs an operation similar to the signal processing and FIG. 4 in the transformation matrix calculation unit 21, the color difference signals IW converted to 480I system, generates a QW. そして、色変調部26では色副搬送波fscによる直交振幅変調を行い、4 Then, a quadrature amplitude modulation by the color subcarrier fsc The color modulator 26, 4
80I系の色信号CWEを生成する。 Generating a color signal CWE of 80I system.

【0033】つぎに、時間軸圧縮部について図6〜図8 Next, FIGS. 6 to the time-base compression unit 8
で説明する。 In the description. まず、図6により信号処理の概要を述べる。 First, it outlines the signal processed by the FIG. 同図(a)に示す様に標本点の4〜3変換の信号処理で時間軸の3/4倍圧縮を図る。 Achieve 3/4 compression of the time axis at 4-3 conversion signal processing of the sample points as shown in the diagram (a). すなわち、4個の標本点A,B,C,Dの画素より3個の標本点X,Y,Z That is, the four sample points A, B, C, 3 pieces of sample points from pixels D X, Y, Z
の画素の信号系列を生成する。 It generates a signal sequence of pixels. そして、この信号系列の時間軸を3/4倍に圧縮して、時間軸圧縮の信号処理を実現する。 Then, by compressing the time axis of the signal sequence to 3/4, realizing the signal processing time warp. 同図(b)は、この標本点の4〜3変換を直線補間の特性で実現する場合の変換マトリクスである。 FIG (b) is a transformation matrix in the case of realizing the 4-3 conversion of the sample points in the characteristic of linear interpolation.

【0034】図7は、輝度信号に対するこの時間軸圧縮部5の一実施例である。 [0034] FIG. 7 shows an embodiment of the time-base compression unit 5 for the luminance signal. 変換マトリクス演算部27では図6(b)に示した変換マトリクスにより標本点の4〜 4 sample points by the transformation matrix shown in FIG. 6 the conversion matrix calculation section 27 (b)
3変換処理を行い、例えば1走査線の有効画素数が76 3 performs conversion processing, for example, the number of effective pixels for one scanning line 76
8個の信号Yより、有効画素数が576(768×3/ Than eight signal Y, the number of effective pixels is 576 (768 × 3 /
4)の4〜3変換した画素X,Y,Zの信号を生成する。 4-3 converted pixel X of 4), Y, to generate a signal Z. そして、同図に示すWT動作によって、RAM28 Then, the WT operation shown in the figure, RAM 28
に4〜3変換した画素X,Y,Zの信号を書き込む。 Write 4-3 converted pixel X, Y, a signal Z to. 一方、RAM28からはRD動作により連続して読み出し、時間軸を3/4倍圧縮した有効画素数が576個の信号YTCを生成する。 On the other hand, from the RAM28 read continuously by RD operation, the number of effective pixels obtained by compressing 3/4 the time axis to generate a 576 signal YTC. 選択回路29では、信号YTC In the selection circuit 29, the signal YTC
のない斜線部の領域の期間では特定値(例えば黒、あるいはグレー)のマスキング信号YMSKを選択して出力し、画面の両サイドがマスキング処理され、時間軸を3 The free period regions of hatched portions specific value (e.g., black, or gray) selects and outputs a masking signal YMSK of, both sides of the screen is masking, 3 time axis
/4倍圧縮した輝度信号YWNを生成する。 Generating a / 4 times compressed luminance signal YWn.

【0035】色差信号に対する時間軸圧縮部5の一実施例を図8に示す。 [0035] One embodiment of a time-base compression unit 5 with respect to the color difference signals shown in FIG. 色差信号I,Qに対して、変換マトリクス演算部27,RAM28,選択回路29では図7の実施例と同様な信号処理を行い、画面の両サイドがマスキング信号CMSK(例えば無彩色に対応した信号)でマスキング処理され、時間軸が3/4倍圧縮した信号を生成する。 Color difference signals I, with respect to Q, conversion matrix calculating unit 27, RAM 28, performs the same signal processing as in the example of FIG. 7 with the selecting circuit 29, both sides of the screen corresponding to the masking signal CMSK (e.g. achromatic signal ) in the masking to generate a time signal axis is compressed 3/4. そして、色変調部26では色副搬送波fscによる直交振幅変調を行い、色信号CWNを生成する。 Then, the color modulation section 26 performs quadrature amplitude modulation with the chrominance subcarrier fsc, to generate color signals CWN.

【0036】つぎに、画信号復調部3の一実施例を図9 Next, an embodiment of the image signal demodulator 3 9
に示す。 To show. YC分離部30では、例えば水平・垂直の2次元の周波数領域での輝度信号と色信号の分離処理を行い、輝度成分SY,色成分SCを抽出する。 The YC separation unit 30, for example, performs a process of separating a luminance signal and a color signal of a two-dimensional frequency region of the horizontal and vertical, and extracts the luminance component SY, the color components SC. 色復調部3 The color demodulator 3
1では色副搬送波fscによる同期検波を行い、色差信号I,Qを生する。 Performs synchronous detection by 1, the color subcarrier fsc, the color difference signals I, the Q is live. また、遅延回路32では色復調の信号処理による時間遅延を調整し、輝度信号Y,色信号Cを生成する。 Further, by adjusting the time delay due to signal processing delay circuit 32 in the color demodulation, and generates luminance signal Y, a color signal C.

【0037】図10は、この画信号復調部3の他の一実施例で、レターボックス方式EDTVの横長画像部に水平補強信号を重畳したテレビジョン信号に好適なものである。 [0037] FIG 10 is a another embodiment of the image signal demodulator 3, it is suitable for television signal superimposed horizontal reinforcement signal to horizontal image portion of the letter box system EDTV.

【0038】YC分離部30では、例えば水平・垂直・ [0038] In the YC separation unit 30, for example, horizontal, vertical, and
時間の3次元の周波数領域での輝度信号,色信号の分離処理を行い、輝度成分SY,色成分SCを分離する。 Luminance signal in the three-dimensional frequency domain time, performs separation processing of the color signal, to separate the luminance component SY, the color components SC. 色成分SCは色復調部31で色副搬送波fscによる同期検波を行い、色差信号I,Qを生成する。 Color component SC performs synchronous detection by the color subcarrier fsc color demodulator 31, the color difference signals I, to generate a Q. 水平補強信号分離部33では、水平・垂直・時間の3次元の周波数領域で横長画像部に重畳された水平補強信号HHを抽出する。 The horizontal reinforcement signal separating unit 33 extracts the horizontal reinforcement signal HH superimposed horizontally long image part in a three-dimensional frequency region of the horizontal, vertical, and time. なお、NTSC方式のテレビジョン信号では水平補強信号HHは存在しない。 Incidentally, there is no horizontal reinforcement signal HH is the television signal of the NTSC system. したがって、制御信号VSM Therefore, the control signal VSM
DによりNTSC方式のテレビジョン信号の場合には零成分の信号をHHとして出力する。 In the case of a television signal of the NTSC system by the D outputs a signal of zero components as HH. 復調部34では副搬送波μ 0による同期検波を行い、輝度の水平高域成分Y Performs synchronous detection by the demodulation unit 34 in the sub-carrier mu 0, the horizontal high-frequency component Y of the luminance
H(4.2MHz以上)を生成する。 Generating a H (or 4.2 MHz). そして、この信号を加算回路35で輝度の水平低域成分YL(4.2MHz以下)に加算して、輝度信号Yを生成する。 Then, by adding horizontal low frequency component YL (4.2 MHz or less) of the luminance in adder circuit 35 the signal, it generates a luminance signal Y.

【0039】つぎに、マスキング部6の一実施例を図1 Next, an embodiment of the masking portion 6 1
1に示す。 It is shown in 1. 選択回路36では、レターボックス方式ED In the selection circuit 36, the letter box scheme ED
TVの横長画像部に対応するメイン部領域の期間は信号Y(360I系)、同図の斜視部で示す画面の上下の無画部領域ではマスキング信号YMSKを選択して出力し、画面の上下をマスキング処理した輝度信号YSEを生成する。 Period of the main part area corresponding to the horizontally long image of the TV signal Y (360I system) selects and outputs a masking signal YMSK the upper and lower non-picture area of ​​the screen shown in perspective part of the figure, the top and bottom of the screen the generating a luminance signal YSE that masking.

【0040】つぎに、記録変調部12の一実施例を図1 Next, FIG. 1 an example of a recording modulator 12
2により説明する。 2 by explaining. これは、カラーアンダ方式による録画に好適なもので、従来技術と同様の構成で実現できる。 This is suitable for recording by color subcarrier method, it can be realized in the prior art the same configuration.

【0041】選択回路37では、入力信号がNTSC, [0041] In the selection circuit 37, the input signal is NTSC,
レターボックス方式EDTVのテレビジョン信号の場合には、輝度信号RY,色信号RC,Sモード信号の場合には、この輝度信号,色信号をそれぞれ選択して出力する。 In the case of television signals of letter box type EDTV the luminance signal RY, a color signal RC, in the case of the S mode signal, the luminance signal, and selects and outputs the color signals, respectively. メインエンファシス部38では輝度信号に対して所定の高域強調の信号処理を行う。 Performing signal processing of a predetermined high frequency emphasis to the main emphasis section 38 in the luminance signal. クリップ部39では、 In the clip portion 39,
信号レベルが所定のレベル範囲内になる様にレベル制限を行う。 Signal level performs level limit so as to be within a predetermined level range. FM変調部40では、所定の低搬送波FM変調処理を行い、HPF41で高域成分を抽出する。 The FM modulation unit 40 performs a predetermined low carrier FM modulation processing to extract the high frequency component in HPF 41. そして、輝度信号成分の記録信号を生成する。 Then, to generate the recording signal of the luminance signal component. 一方、色信号は周波数変換部42でAM変調操作により低周波数帯の信号に周波数シフトさせ、LPF43で所定の低域成分を抽出して、色信号成分の記録信号を生成する。 On the other hand, the color signal is frequency shifted to a signal of the low frequency band by AM modulation operation by the frequency conversion unit 42, extracts a predetermined low-frequency component in LPF 43, generates a recording signal of the color signal components. そして、加算部44では両者の信号を加算して、所定の形態の記録信号を生成する。 Then, by adding the two signals in the adding section 44, it generates a recording signal of a predetermined form. この記録信号は記録アンプを通し、ロータリトランスを介して記録媒体に記録する。 The recording signal is passed through a recording amplifier and recorded on a recording medium through a rotary transformer.

【0042】つぎに、この再生復調部16の一実施例を図13により説明する。 Next, a description will be given of an embodiment of the reproducing demodulating portion 16 by Figure 13.

【0043】ロータリトランスを介して記録媒体から読み出し、プリアンプで増幅した信号を、再生復調部に入力する。 The reading from the recording medium via the rotary transformer, the signal amplified by the preamplifier and input to playback demodulator. HPF41,LPF43ではそれぞれ所定の高域成分,低域成分を抽出し、FM変調した輝度信号成分,低周波数帯に周波数シフトした色信号成分をそれぞれ再生する。 HPF 41, each predetermined high frequency component in LPF 43, extracts the low-frequency component, a luminance signal component FM modulation, reproducing respectively the frequency-shifted chrominance signal component in a low frequency band. イコライザ部45では記録再生の過程で発生する波形歪を補償する波形等化の信号処理を行い、リミッタ部46で信号レベルを特定の範囲内に制限するリミッタ処理を行う。 It performs signal processing of the waveform equalization for compensating for waveform distortion generated in the course of the equalizer unit 45 in the recording and reproduction, and performs limit processing for limiting the signal level within a certain range by the limiter unit 46. FM復調部47では所定のFM復調の信号処理を行い、LPF48でその低域成分を抽出して、輝度信号を復調する。 The FM demodulation unit 47 performs signal processing of a predetermined FM demodulation, and extracts the low frequency component in LPF 48, demodulates the luminance signal. そして、ディエンファシス部49では記録側のエンファシス処理とは逆の特性によるディエンファシス処理を行い、元の輝度信号Yを再生する。 Then, a de-emphasis process by reverse characteristics to the emphasis processing of the de In-emphasis unit 49 recording side, reproduces the original luminance signal Y.

【0044】一方、色信号成分は、ACC部50でバースト信号のレベルが特定の一定値になる様に振幅制御を行う。 On the other hand, the color signal components, the level of the burst signal performs amplitude control so as to become a specific constant value in ACC unit 50. そして、周波数変換部51では検波処理による復調を行い、BPF52で所定の帯域成分を抽出し、元の色信号Cを再生する。 Then, a demodulation by detection processing in the frequency converting unit 51, extracts a predetermined band component BPF 52, to reproduce the original color signal C.

【0045】以上、本実施例によれば、NTSC方式, [0045] According to this embodiment, NTSC system,
レターボックス方式のいずれのテレビジョン信号も高画質,高精細な画質劣化の少ない特性で録画するアナログ記録方式のテレビジョン信号の記録再生装置が実現できる。 Any of the television signal of the letter box system is also high quality, a recording and reproducing apparatus of a television signal of the analog recording method for recording with less characteristics high-definition image quality deterioration can be realized.

【0046】なお、レターボックス方式EDTVのテレビジョン信号では、入力信号のS/N比が悪い場合には垂直補強信号に加わった雑音が復調処理によって視覚的に目立ちやすい雑音成分に変換され、再生画像では画質劣化となる。 [0046] In the television signals of letter box type EDTV, noise applied to the vertical reinforcement signal if S / N ratio of the input signal is bad is converted into visually noticeable noise component by the demodulation processing, reproduction the image quality deterioration in the image. したがって、本実施例の3〜4変換部4では、S/N比の悪い信号の場合には垂直補強信号を復調して得られる輝度の垂直高域成分VHは使用せず、図4 Thus, the 3-4 conversion unit 4 of the present embodiment, a vertical high-frequency component VH of the luminance obtained by demodulating the vertical reinforcement signal in the case of poor signal S / N ratio is not used, FIG. 4
の点線で示した信号を用いて走査線の3〜4変換処理を行う構成を採用し、S/N比の劣化に伴う画質劣化を避けることも可能である。 Of using the signals shown by a dotted line adopts a configuration in which the 3-4 conversion of the scanning lines, it is possible to avoid image quality deterioration due to the deterioration of the S / N ratio.

【0047】 [0047]

【発明の効果】本発明によれば、レターボックス方式E According to the present invention, the letter box system E
DTVのテレビジョン信号を高画質,高精細な画質で録画でき、また、NTSC方式のテレビジョン信号も高画質で録画できるアナログ記録方式のテレビジョン信号の記録再生装置が実現できる。 Quality of the DTV of the television signal, can be recorded in high-definition image quality, also, the recording and reproducing apparatus of a television signal of the analog recording system that can be recorded by the television signal is also high quality of the NTSC system can be realized.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の一実施例の全体ブロック構成図。 [1] overall block diagram of an embodiment of the present invention.

【図2】本発明における録画画像の形態図。 [2] Embodiment view of recording an image in the present invention.

【図3】3〜4変換部における信号処理の概要図。 [Figure 3] schematic diagram of the signal processing in the 3-4 conversion unit.

【図4】輝度信号に対する3〜4変換部の一実施例図。 [4] an example diagram of a 3-4 conversion section for the luminance signal.

【図5】色信号に対する3〜4変換部の一実施例図。 [5] An example diagram of a 3-4 conversion section for color signal.

【図6】時間軸圧縮部における信号処理の概要図。 [6] Outline diagram of the signal processing in the time-base compression unit.

【図7】輝度信号に対する時間軸圧縮部の一実施例図。 [7] An exemplary illustration of the time-base compression unit for the luminance signal.

【図8】色信号に対する時間軸圧縮部の一実施例図。 [8] An exemplary illustration of the time-base compression unit for the color signals.

【図9】画信号復調部の一実施例図。 [9] image signal to an embodiment diagram of a demodulator.

【図10】画信号復調部で水平補強信号を用いる一実施例図。 An embodiment diagram using horizontal reinforcement signal in FIG. 10 picture signal demodulation unit.

【図11】マスキング部の一実施例図。 [11] An exemplary illustration of the masking portion.

【図12】記録変調部の一実施例図。 [12] an embodiment view of the recording modulation unit.

【図13】再生復調部の一実施例図。 [13] An embodiment of the playback demodulator.

【符号の説明】 DESCRIPTION OF SYMBOLS

1…A/D変換部、2…補助信号復調部、3…画信号復調部、4,7…3〜4変換部、5…時間軸圧縮部、6… 1 ... A / D conversion unit, 2 ... auxiliary signal demodulator, 3 ... image signal demodulator, 4,7 ... 3-4 conversion unit, 5 ... time base compression unit, 6 ...
マスキング部、8,10…選択回路、9…識別部、11 Masking portions, 8, 10 ... selection circuit, 9 ... identification unit, 11
…D/A変換部、12…記録変調部、13…記録アンプ、14…記録媒体、15…プリアンプ、16…再生復調部、17…加算部、18,19…プロセス部、20… ... D / A conversion unit, 12 ... recording modulation unit, 13 ... recording amplifier, 14 ... recording medium, 15 ... preamplifiers, 16 ... playback demodulation section, 17 ... adding unit, 18, 19 ... processing unit, 20 ...
RAM、21,22…変換マトリクス演算部、23…H RAM, 21, 22 ... conversion matrix calculating unit, 23 ... H
PF回路、24…LPF回路、25…加算回路、26… PF circuit, 24 ... LPF circuit, 25 ... adder circuit, 26 ...
色変調部、27…変換マトリクス演算部、28…RA Color modulation unit, 27 ... conversion matrix calculating unit, 28 ... RA
M、29…選択回路、30…YC分離部、31…色復調部、32…遅延回路、33…水平補強信号分離部、34 M, 29 ... selection circuit, 30 ... YC separating unit, 31 ... color demodulation unit, 32 ... delay circuit, 33 ... horizontal reinforcement signal separator, 34
…復調部、35…加算回路、36,37…選択回路、3 ... demodulation unit, 35 ... adding circuit, 36 and 37 ... selection circuit, 3
8…メインエンファシス部、39…クリップ部、40… 8 ... The main emphasis part, 39 ... clip portion, 40 ...
FM変調部、41…HPF、42…周波数変換部、43 FM modulation unit, 41 ... HPF, 42 ... frequency conversion unit, 43
…LPF、44…加算部、46…イコライザ部、46… ... LPF, 44 ... adding unit, 46 ... equalizer section, 46 ...
リミッタ部、47…FM復調部、48…LPF、49… Limiter unit, 47 ... FM demodulator, 48 ... LPF, 49 ...
ディエンファシス部、50…ACC部、51…周波数変換部、52…BPF。 De-emphasis unit, 50 ... ACC unit, 51 ... frequency converter, 52 ... BPF.

Claims (3)

    【特許請求の範囲】 [The claims]
  1. 【請求項1】NTSCテレビジョン信号,レターボックス方式EDTVテレビジョン信号をアナログ記録するテレビジョン信号の記録再生装置において、標準モードならびにワイドモードの2種類の録画モードを設け、前記標準モードによる録画においては、アスペクト比4対3 1. A NTSC television signals, the recording and reproducing apparatus of the letter box system EDTV television signal television signal to an analog record, the provided two recording modes of the standard mode and the wide mode, the recording by the standard mode has an aspect ratio of 4: 3
    の画面上での表示画像がNTSCテレビジョン信号に対しては全画面,レターボックス方式EDTVテレビジョン信号に対しては画面の上下のマスキング処理した無画部領域を設けた横長なアスペクト比の横長画像として表示する形態の画像信号による録画、前記ワイドモードによる録画においては、アスペクト比16対9の画面上での表示画像がNTSCテレビジョン信号に対しては画面両サイドにマスキング処理した無画部領域を設けたアスペクト比4対3の画像,レターボックス方式EDTVテレビジョン信号に対しては全画面で表示する形態の画像信号による録画を行うことを特徴とするEDTVテレビジョン信号の記録再生装置。 Full screen for displaying images on the screen of NTSC television signals, letterbox method EDTV television oblong oblong aspect ratios having a non-image area was masking the top and bottom of the screen with respect to television signals recording by the image signal in the form to be displayed as an image, in the recording by the wide mode, the non-picture portion displayed image on the screen of the aspect ratio 16: 9 is obtained by masking the screen both sides for NTSC television signals recording and reproducing apparatus of EDTV television signal aspect ratio of 4: 3 images having a region, for letterbox mode EDTV television signal and performing recording by the image signal in the form to be displayed in full screen.
  2. 【請求項2】画像信号の録画方式がカラーアンダ記録方式であることを特徴とする請求項1項に記載のEDTV 2. A recording method of the image signal according to claim 1, wherein, characterized in that the color subcarrier recording system EDTV
    テレビジョン信号の記録再生装置。 Recording and reproducing apparatus of a television signal.
  3. 【請求項3】標準モードによる録画,ワイドモードによる録画のモードの選択は使用者が行うことを特徴とする請求項1項,2項に記載のEDTVテレビジョン信号の記録再生装置。 3. A recording by standard mode, according to claim 1, wherein, wherein the selected mode of recording by the wide mode in which the user performs a recording and reproducing apparatus of EDTV television signal according to item 2.
JP4278347A 1992-10-16 1992-10-16 Recording and reproducing device for edtv television signal Pending JPH06133334A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4278347A JPH06133334A (en) 1992-10-16 1992-10-16 Recording and reproducing device for edtv television signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4278347A JPH06133334A (en) 1992-10-16 1992-10-16 Recording and reproducing device for edtv television signal

Publications (1)

Publication Number Publication Date
JPH06133334A true JPH06133334A (en) 1994-05-13

Family

ID=17596072

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4278347A Pending JPH06133334A (en) 1992-10-16 1992-10-16 Recording and reproducing device for edtv television signal

Country Status (1)

Country Link
JP (1) JPH06133334A (en)

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US8843960B2 (en) 1998-09-17 2014-09-23 United Video Properties, Inc. Electronic program guide with digital storage
US9021538B2 (en) 1998-07-14 2015-04-28 Rovi Guides, Inc. Client-server based interactive guide with server recording
US9055341B2 (en) 1996-03-15 2015-06-09 Henry C. Yuen Combination of recorded program index and EPG
US9071872B2 (en) 2003-01-30 2015-06-30 Rovi Guides, Inc. Interactive television systems with digital video recording and adjustable reminders
US9125169B2 (en) 2011-12-23 2015-09-01 Rovi Guides, Inc. Methods and systems for performing actions based on location-based rules
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US9055341B2 (en) 1996-03-15 2015-06-09 Henry C. Yuen Combination of recorded program index and EPG
US9118948B2 (en) 1998-07-14 2015-08-25 Rovi Guides, Inc. Client-server based interactive guide with server recording
US9226006B2 (en) 1998-07-14 2015-12-29 Rovi Guides, Inc. Client-server based interactive guide with server recording
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US9055319B2 (en) 1998-07-14 2015-06-09 Rovi Guides, Inc. Interactive guide with recording
US9055318B2 (en) 1998-07-14 2015-06-09 Rovi Guides, Inc. Client-server based interactive guide with server storage
US9154843B2 (en) 1998-07-14 2015-10-06 Rovi Guides, Inc. Client-server based interactive guide with server recording
US10075746B2 (en) 1998-07-14 2018-09-11 Rovi Guides, Inc. Client-server based interactive television guide with server recording
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US9106947B2 (en) 1998-09-17 2015-08-11 Rovi Guides, Inc. Electronic program guide with digital storage
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US9237371B2 (en) 1998-09-17 2016-01-12 Rovi Guides, Inc. Electronic program guide with digital storage
US8898721B2 (en) 1998-09-17 2014-11-25 United Video Properties, Inc. Electronic program guide with digital storage
US8843960B2 (en) 1998-09-17 2014-09-23 United Video Properties, Inc. Electronic program guide with digital storage
US9191716B2 (en) 2000-04-10 2015-11-17 Rovi Guides, Inc. Interactive media guide with media guidance interface
US9294799B2 (en) 2000-10-11 2016-03-22 Rovi Guides, Inc. Systems and methods for providing storage of data on servers in an on-demand media delivery system
US9071872B2 (en) 2003-01-30 2015-06-30 Rovi Guides, Inc. Interactive television systems with digital video recording and adjustable reminders
US9369741B2 (en) 2003-01-30 2016-06-14 Rovi Guides, Inc. Interactive television systems with digital video recording and adjustable reminders
US8542984B1 (en) 2007-04-03 2013-09-24 Rovi Guides, Inc. Advanced recording options for interactive media guidance application systems
US8909032B2 (en) 2007-04-03 2014-12-09 Rovi Guides, Inc. Advanced recording options for interactive media guidance application systems
US10063934B2 (en) 2008-11-25 2018-08-28 Rovi Technologies Corporation Reducing unicast session duration with restart TV
US9125169B2 (en) 2011-12-23 2015-09-01 Rovi Guides, Inc. Methods and systems for performing actions based on location-based rules

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