JPS5896483A - Recorder and reproducer for color video signal - Google Patents
Recorder and reproducer for color video signalInfo
- Publication number
- JPS5896483A JPS5896483A JP56196049A JP19604981A JPS5896483A JP S5896483 A JPS5896483 A JP S5896483A JP 56196049 A JP56196049 A JP 56196049A JP 19604981 A JP19604981 A JP 19604981A JP S5896483 A JPS5896483 A JP S5896483A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- frequency
- conversion circuit
- color
- controlled oscillator
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/86—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded sequentially and simultaneously, e.g. corresponding to SECAM-system
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/7921—Processing of colour television signals in connection with recording for more than one processing mode
- H04N9/7925—Processing of colour television signals in connection with recording for more than one processing mode for more than one standard
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
- H04N9/83—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal
- H04N9/84—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only the recorded chrominance signal occupying a frequency band under the frequency band of the recorded brightness signal the recorded signal showing a feature, which is different in adjacent track parts, e.g. different phase or frequency
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
Abstract
Description
【発明の詳細な説明】
コノ発１１Ｊ’１ａＰＡＬ方式テレビジョ／信号トＳＥ
ＣＡＭ方式テレビジョン信号とを記録・再生するカラー
映倫信号の記録再生装置（以下ＶＴＲと呼ぶ）に関する
ものである。[Detailed description of the invention] 11J'1a PAL TV/signal SE from Kono
The present invention relates to a color video signal recording and reproducing device (hereinafter referred to as a VTR) that records and reproduces a CAM system television signal.
この発明は、ＶＨ５方式ＰＡＬ ＶＴＲＫ オイテ、
ＳＥＣＡＭ傷号を記録・再生（ＶＨ８方式擬似ＳＥＣＡ
Ｍと呼ばれている）する場合の構成を簡易化することを
目的とする。This invention is a VH5 system PAL VTRK system,
Recording and reproducing SECAM signals (VH8 system pseudo-SECA)
The purpose is to simplify the configuration when
この発明のカラー映倫信号の記録再生装置は、ＶＨ８方
式ＰＡＬ ＶＴＲのカラー信号を記録する場合は、サブ
キャリア周波数ｆ０で直角二相変調された色信号を（４
０＋ｌ ）ｆＨ（ｆＨは水平走査周波数）の低域周波数
に変換し、かつ一方のフィールドのみｌ水平走査期間ご
とに９０°ずつ位相をシフトし九状頗で記録するように
定められている。When recording a color signal of a VH8 system PAL VTR, the color video signal recording and reproducing device of the present invention outputs a color signal quadrature-two-phase modulated at a subcarrier frequency f0 (4
0+l ) fH (fH is the horizontal scanning frequency), and the phase of only one field is shifted by 90° every l horizontal scanning period and recorded in a nine-shaped manner.
一方、ＶＨ５方式擬似ＳＥＣＡＭ ＶＴＲテは、ＦＭ変
調された色信号をキャリア信号ｆ。＋（４０＋−Ｈ）ｆ
Ｈ（ｆｏはＰＡＬ方式サブキャリア周波数で、ｆｃ＃４
．４３Ｍ）Ｗで低域周波数の色信号に周波数変換して記
録する方法が用いられており、したがって、再生時には
、再生された低域周波数の色信号をキャリア信号ｆ ｃ
＋ （４０” ａ ） ｆＨでもって周波数変換して
元のＦＭｇｅ調されたＳＥＣＡＭ方式の色信号を再現し
ている。On the other hand, a VH5 pseudo-SECAM VTR uses an FM modulated color signal as a carrier signal f. +(40+-H)f
H (fo is the PAL subcarrier frequency, fc#4
．． 43M) W is used to convert the frequency into a low frequency color signal and record it. Therefore, during playback, the reproduced low frequency color signal is used as a carrier signal f c
+ (40”a) The frequency is converted using fH to reproduce the original FMge-tuned SECAM system color signal.
つぎに、この発明の実施例を図面に基づいて説明する。Next, embodiments of the present invention will be described based on the drawings.
このカラー映倫信号の記録再生装置は、水平同期信号周
波数ｆＨに関連した誤差電圧を発生する第１の位相比較
器１９と、この＠ｌの位相比較器１９の出力誤差電圧で
制御され前記水平同期信号周波数ｆＨのてい倍で発振す
る第１の電圧制御発振器１７と、このｓｇｌの電圧制御
発振器１７の出力信号を分周する第１の分局器１６．１
５と、ＰＡＬテレビジｌン方式の搬送色信号周波数ｆ０
で発振する発振器２４と、前記＠１の分周１１１６．１
５の出力信号と前Ｅ３発振器２４の出力信号の和周波数
信号を得る第１の周波数変換回路１４と、前記発振器２
４の出力信号と再生カラーバースト信号とを位相比較し
て誤差電圧を発生する第２の位相比較器２５と、この第
２の位相比較器２５の出力誤差電圧で制御される１ｇ２
の電圧制御発振器と、この第２の電圧制御発振器の出力
信号を分周する第２の分局器と、この第２の分局器の出
力信号と前記発振器２４の出力信号との和ｓｅｔ＊＠号
を得る第２の周波数変換回路と、記録時に前記＠１の周
波数変換回路１４の出力信号で入力されるＰＡＬ方式ま
たはＳＥＣＡＭ方式の入力搬送色信号を低絨局波数色信
号に変換し、 ＰＡＬ方式の再生時に前記第２の周波数
変換回路の出力信号で再生低域周波数色信号を元の搬送
色信号に変換するとともにＳＥＣＡＭ方式の再生時に前
記第１の周波数変換回路’１４の出力信号で再生低域周
波数色信号を元の搬送色信号に変換する第３の周波数変
換回路５とを備えている。この場合、前記第２の電圧制
御発振器は前ε第１の電圧制御発振器１７と、前ＩＥ３
第２の分周器は前記Ｗｇｌの分周器１６．１５と、前記
第２の周波数変換回路は前記＠１の周波数変換回路１４
とそれぞれ一つのものを共用し、ＰＡＬ方式またはＳＥ
ＣＡＭ方式の記録時に前記第１の位相比較器１９の出力
誤差電圧を前ｅ１ｇ１の電圧制御発振器１７へ加え、
ＰＡＬ方式の再生時に前記第２の位相比較器２５の出力
誤差電圧を前記＠ｌの電圧制御発振器１７へ加えるとと
もにＳＥＣＡＭ方式の再生時に前記第１の位相比較器１
９の出力誤差電圧を前記第１の電圧制御発振器１７へ加
えるスイッチ２６を付設してφる。This color video signal recording and reproducing device is controlled by a first phase comparator 19 that generates an error voltage related to the horizontal synchronization signal frequency fH, and an output error voltage of this @l phase comparator 19, and is controlled by the output error voltage of the phase comparator 19 of @l. A first voltage controlled oscillator 17 that oscillates at a multiple of the signal frequency fH, and a first divider 16.1 that frequency divides the output signal of the voltage controlled oscillator 17 of this SGL.
5, and the carrier color signal frequency f0 of the PAL television system.
an oscillator 24 that oscillates at , and a frequency division 1116.1 of the @1
a first frequency conversion circuit 14 that obtains a sum frequency signal of the output signal of E3 oscillator 5 and the output signal of the previous E3 oscillator 24;
1g2 which is controlled by the output error voltage of this second phase comparator 25 by comparing the phases of the output signal of 4 and the reproduced color burst signal to generate an error voltage
a voltage-controlled oscillator, a second divider that divides the output signal of the second voltage-controlled oscillator, and a sum set*@ of the output signal of the second divider and the output signal of the oscillator 24. and a second frequency conversion circuit that converts the input carrier color signal of the PAL system or SECAM system, which is input as the output signal of the frequency conversion circuit 14 of @1 at the time of recording, into a low-wavelength color signal, During reproduction, the output signal of the second frequency conversion circuit is used to convert the reproduced low frequency color signal into the original carrier color signal, and during reproduction of the SECAM system, the output signal of the first frequency conversion circuit '14 is used to convert the reproduced low frequency color signal into the original carrier color signal. The third frequency conversion circuit 5 converts the range frequency color signal into the original carrier color signal. In this case, the second voltage controlled oscillator includes the previous ε first voltage controlled oscillator 17 and the previous IE3.
The second frequency divider is the frequency divider 16.15 of the Wgl, and the second frequency conversion circuit is the frequency conversion circuit 14 of the @1.
PAL or SE
Adding the output error voltage of the first phase comparator 19 to the voltage controlled oscillator 17 of the previous e1g1 during CAM recording,
The output error voltage of the second phase comparator 25 is applied to the @l voltage controlled oscillator 17 during PAL system reproduction, and the first phase comparator 1 is applied during SECAM system reproduction.
A switch 26 is attached to apply the output error voltage of 9 to the first voltage controlled oscillator 17.
以下、この実施例についてより詳しく説明する。This example will be explained in more detail below.
まｆ、ＰＡＬカフ−テレビジ嘗ン信号を配録・再生する
場合について説明する。記録時には、端子ｌから入力し
たＰＡＬカヲー信号は帯域フィルタ２゜スイッチ３ 、
ＡＣＣ回路４を介してｌｉｉ！１ｌｔｌ数変換回路５
に供給され、帯域フィルタ１３からのキャリア１
信号ｆ。＋（＋０＋１）ｆＨでもって周波数変換され、
スイッチ６を通ったのち低域フィルタフにより差周波数
成分が選択され、端子８には（４０＋Ｔ ） ｆＨの低
域ｍｆＪｔ数に変換された色信号が出力され、この信号
が周波数変調された輝度信号に重畳されて磁気ヘッドを
介して磁電テープに記録される。Now, the case of distributing and reproducing PAL television signals will be explained. During recording, the PAL signal input from terminal 1 is passed through a bandpass filter 2° switch 3,
lii! via the ACC circuit 4! 1ltl number conversion circuit 5
and the carrier 1 signal f from the bandpass filter 13. The frequency is converted by +(+0+1)fH,
After passing through switch 6, the difference frequency component is selected by a low-pass filter, and a color signal converted to a low-frequency mfJt number of (40+T) fH is output to terminal 8, and this signal is converted into a frequency-modulated luminance signal. The images are superimposed and recorded on a magnetic tape via a magnetic head.
再生時には、端子９にＳ＊テープから再生された信号が
入力され、低域フィルター０でもって（４０＋Ｈ）ｆＨ
＋Δｆの低域周波数の色信号を取り出し、この色信号が
スイッチ３ 、 ＡＣＣ回路４を介して周波数変換回路
５に供給される。（但しΔｆはシフタ成分（時間軸開動
成分）である。）この低域８ｔｌ数の色信号は、帯域フ
ィルター３からのキャリア信号ｆ０＋ （４０＋Ｔ ）
ｆＨ＋Δｆによって周波数変換回路５で周波数変換され
、スイッチ６を過つ九のち帯域フィルター１により差周
波数成分が選択される端子１２にはジッダ（時間軸変動
）成分が除去されたＰＡＬ搬送色信号が、出力される。During playback, the signal played from the S* tape is input to terminal 9, and (40+H)fH is input with low-pass filter 0.
A color signal with a low frequency of +Δf is taken out, and this color signal is supplied to a frequency conversion circuit 5 via a switch 3 and an ACC circuit 4. (However, Δf is a shifter component (time axis opening component).) This low frequency 8tl color signal is the carrier signal f0+ (40+T) from the bandpass filter 3.
The PAL carrier color signal from which the jedder (time axis fluctuation) component has been removed is sent to a terminal 12 where the frequency is converted by fH+Δf in the frequency conversion circuit 5, passes through the switch 6, and then the difference frequency component is selected by the bandpass filter 1. Output.
ここで、ｍｓ数変換回路５に供給されるキャリア信号の
作成について説明する。スイッチ２６がａ ｆｉｌｌに
ある場合には、電圧制御発振器（以下■ＣＯと呼ぶ）１
７．−’分間の分局器１８および位相２１
比較器１９は位相同期ループＣＰＬＬ ） ｔ−構成し
ており、ＶＣＯ１７は端子２０に入力される水平同期信
号の周波数ｆＨの３２１倍の周波数３２１ｆＨで発振し
、いわゆるＡＦＣ回路を構成している。ＶＣＯ１７の出
力信号は、分ｌＩｌ器１６で百分周され、さらに分局器
１５で一分周されて（４ｏ＋−！−）ｒＨの信号とな８
るが、この分局器１５は、スイッチ２２を介して端子２
１から入力され九ＰＧ／＜ルス（３０１のフィールド選
択信号）によって制御され、一方のフィールドのみ出力
信号（４０＋−Ｈ）ｆＨの位相が１水平走査期間ごとに
９０°ずつシフトされている。したがって、配録時にス
イッチ２６がａ ＃Ｊに接続されるようにしておけば、
分局器１５の出力信号は（４０＋−Ｈ）ｆＨとなり、こ
の信号とＰＡＬ方式のサブキャリア周波数ｆ０で発振す
る水晶発振器２４の出力信号とを周波数変換回路１４で
周波数変換し、帯域フィルター３によｐ和周波数成分を
選択すれば、キャリア信号ｆ０＋ （４０＋’ ）ｆＨ
が得られる。Here, creation of the carrier signal supplied to the ms number conversion circuit 5 will be explained. When the switch 26 is in the a fill position, the voltage controlled oscillator (hereinafter referred to as CO) 1
7. The divider 18 and the phase 21 comparator 19 are configured as a phase-locked loop CPLL), and the VCO 17 oscillates at a frequency 321fH, which is 321 times the frequency fH of the horizontal synchronization signal input to the terminal 20. It constitutes a so-called AFC circuit. The output signal of the VCO 17 is frequency-divided by 100 by the divider 16, and further divided by 1 by the divider 15 to become a signal of rH (4o+-!-). via terminal 2
1 and is controlled by 9PG/<Rus (field selection signal 301), and the phase of the output signal (40+-H) fH in only one field is shifted by 90 degrees every horizontal scanning period. Therefore, if the switch 26 is connected to a #J during recording,
The output signal of the divider 15 becomes (40+-H)fH, and the frequency conversion circuit 14 converts this signal and the output signal of the crystal oscillator 24 which oscillates at the PAL subcarrier frequency f0, and the bandpass filter 3 If the p sum frequency component is selected, the carrier signal f0+ (40+') fH
is obtained.
再生時には、端子１２に出力される再生搬送色信号力ら
パーストゲート回路２３でカフ−バースト信号を取り出
し、このカラーバースト信号と水晶発振器２４のサブキ
ャリア周波数ｆ０とを位相比較器２５で位相比較し、そ
の比較誤差電圧で７６０１７０局波数を制御する（この
場合スイッチ２６はｂ １１１＋に接続されている）。During reproduction, a burst gate circuit 23 extracts a cuff-burst signal from the reproduced carrier color signal output to the terminal 12, and a phase comparator 25 compares the phase of this color burst signal with the subcarrier frequency f0 of the crystal oscillator 24. , the comparison error voltage controls the 760170 station wave number (in this case, switch 26 is connected to b 111+).
ＶＣＯ１７の出力を分１ｉ１１１１６および分局器１５
で分周した出力信号がの出力キャリア信号はｆ。＋＜４
ｏ＋Ｕ−＞ｔＨ＋Δｆ′となる。したがって、再生低域
周波数の色信号に含まれるシフタ成分がΔｆであれば、
Δ（ｂ＝、ΔｆになるようにＶＣＯ１７の発振周波数は
制御されるため、端子１２に出力される再生搬送色信号
にはシフタ成分が含まれない。The output of VCO17 is divided into 1i11116 and divider 15.
The output carrier signal of the output signal frequency-divided by is f. +<4
o+U->tH+Δf'. Therefore, if the shifter component included in the reproduced low frequency color signal is Δf, then
Since the oscillation frequency of the VCO 17 is controlled so that Δ(b=, Δf), the reproduced carrier color signal output to the terminal 12 does not include a shifter component.
上記に説明したように、実施例においてＰＡＬカフ−信
号を記録・再生する場合には、スイッチ２２をＰＡＬ側
に接続し、かつ、記録時にはスイッチ２６を１ｌｌｌに
、再生時にはスイッチ２６をｂ側に接続すれはよい。As explained above, when recording and reproducing PAL cuff signals in the embodiment, the switch 22 is connected to the PAL side, and the switch 26 is set to 1llll during recording, and the switch 26 is set to the b side during playback. It's fine to connect.
つぎに、実施例において、ＳＥＣＡＭ ｍ号を記録・再
生（■Ｓ方式擬似Ｓ、ＥＣＡＭ ）する場合について説
明する。ＳＥＣＡＭ信号を６録する場合、端子ｌにＳＥ
ＣＡＭカッ−信号を入力すれば、周波数変換回路５に供
給するキャリア信号の周波数はＰＡＬ方式の場合と同じ
ｆ０＋ （４０＋−Ｈ）ｆＨであるから、スイッチ２２
をＳＥＣＡＭ側に接続し、分局器１５の出力信号の位相
が９０゛ずつシフトするのを停止すれば、ＰＡＬ方式の
場合と同様の回路構成でよい。すなわち、スイッチ２６
をａｌＩＩにしＶＣＯ１７、分局器１８および位相比較
器１９でＡＦＣ回路を形成し、ｖＣＯ１７の発振周波数
が３２１ｆＨになるようにすればよいＯ
一方、再生時においてもスイッチ２６をｉ側に接続して
おけば、再生された水平同期信号の１６Ｍ数をｆ′Ｈと
すると、ＶＣＯ１７の出力は３２１ｆ′Ｈとな９、周波
数変換回路５に入力されるキャリア信号はｆｃ ＋ （
４０” ｓ ） ｆ’Ｈとなる。ここで、再生低域周波
数の色信号のもつシフタ成分と再生水平同期信号のもつ
ジッタ成分の比率はほぼ等しい。したがって、端子９に
入力される再生低域周波数のＳＥＣＡＭｌ
色信号は、キャリア信号ｆｃ ＋ （４０＋ ａ ）
ｆ’Ｈによって周波数変換回路５で周波数変換され、端
子１２には元のＦＭ変調されたＳＥＣＡＭ方式の色信号
が再生される。したがって、実施例においてＳＥＣＡＭ
カラー信号を記録・再生する場合には、記録・再生時と
もにスイッチ２２をＳＥＣＡＭ ９１１１に接続し、か
つスイッチ２６をａ側に接続すればよい。Next, in an embodiment, a case will be described in which SECAM m number is recorded and reproduced (■S method pseudo S, ECAM). When recording SECAM signals, connect SE to terminal l.
When the CAM signal is input, the frequency of the carrier signal supplied to the frequency conversion circuit 5 is f0+ (40+-H)fH, which is the same as in the PAL system, so the switch 22
The same circuit configuration as in the case of the PAL system may be used as long as the phase shift of the output signal of the divider 15 is stopped by 90° by connecting it to the SECAM side. That is, switch 26
The switch 26 should be connected to the i side even during playback. For example, if the 16M number of reproduced horizontal synchronizing signals is f'H, the output of the VCO 17 is 321f'H9, and the carrier signal input to the frequency conversion circuit 5 is fc + (
40"s) f'H.Here, the ratio of the shifter component of the reproduced low frequency chrominance signal and the jitter component of the reproduced horizontal synchronizing signal is almost equal. Therefore, the reproduced low frequency signal input to terminal 9 SECAMl color signal of frequency is carrier signal fc + (40+a)
The frequency is converted by the frequency conversion circuit 5 according to f'H, and the original FM-modulated SECAM color signal is reproduced at the terminal 12. Therefore, in the example, SECAM
When recording and reproducing color signals, the switch 22 may be connected to the SECAM 9111 and the switch 26 may be connected to the a side during both recording and reproduction.
以上説明したように、スイッチ２６の制御は、図面に示
す２人力オアゲート回路２７を用い、このオアゲート回
路２７の一方の入力端子２８に配録時（ＲＥＣ）Ｈ１信
号を、再生時（ＰＢ）Ｌｏｗｍ号をそれぞれ入力し、他
方の入力端子２９にＳＥＣＡＭ信号時Ｈｉ信号を、ＰＡ
Ｌ信号時Ｌｏｗ信号をそれぞれ入力し、このオアゲート
回路２７の出力がＨｉのときスイッチ２６が置棚に、出
力がＬｏｗのときスイッチ２６がｂ側に接続されるよう
に構成すればよい。As explained above, the switch 26 is controlled by using the two-man power OR gate circuit 27 shown in the drawing, and the H1 signal at the time of recording (REC) is input to one input terminal 28 of the OR gate circuit 27, and the H1 signal at the time of playback (PB) is Low. input the SECAM signal to the other input terminal 29, and the PA signal to the other input terminal 29.
It is only necessary to input a Low signal when the signal is L, so that when the output of the OR gate circuit 27 is Hi, the switch 26 is connected to the shelf, and when the output is Low, the switch 26 is connected to the b side.
以上のように、この発明によれば、非常に簡単な回路構
成によって■Ｓ方式ＰＡＬ ＶＴＲにおい、てＳＥＣＡ
Ｍ信号の配録・再生が可能となるという効果がある。As described above, according to the present invention, SECA can be performed in an S system PAL VTR using a very simple circuit configuration.
This has the effect of making it possible to record and reproduce M signals.
■面はこの発明の一実施例のカラー映倫信号の記録再生
装置を示すブロック図である。
１・・・端子、２・・・帯域フィルタ、３・・・スイッ
チ、４・・・ＡＣＣ回路、５・・・同波数変換回路、６
・・・スイッチ、７・・・低域フィルタ、８・・・端子
、９・・・端子、１０・・・低域フィルタ、１１−°・
帯域フィルタ、１２°°°端子、１３・・・帯域フィル
タ、１４・・・周波数変換回路、１５．１６・・・分１
１１Ｉ、１７−・・電圧制御発振器、１８・・・分周器
、１９・・・位相比較器、２ｏ川端子、２１・・・端子
、２２・・・スイッチ１，２３・・・パーストゲート回
路、２４・・・水晶発振器、２５・・・位相比較器、２
６・・・スイッチ、２７・・・オアゲート回路、２８．
２９・・・端子Panel (2) is a block diagram showing a recording and reproducing apparatus for color video signals according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Terminal, 2... Bandpass filter, 3... Switch, 4... ACC circuit, 5... Same wave number conversion circuit, 6
...Switch, 7...Low pass filter, 8...Terminal, 9...Terminal, 10...Low pass filter, 11-°・
Bandpass filter, 12°°° terminal, 13... Bandpass filter, 14... Frequency conversion circuit, 15.16... Minute 1
11I, 17-... Voltage controlled oscillator, 18... Frequency divider, 19... Phase comparator, 2o river terminal, 21... Terminal, 22... Switch 1, 23... Burst gate circuit , 24... Crystal oscillator, 25... Phase comparator, 2
6... Switch, 27... OR gate circuit, 28.
29...Terminal
Claims (1)
生する第１の位相比較器と、この第１の位相比較器の出
力誤差電圧で制御され前記水平同期信号周波数のてい倍
で発振する第１の電圧制御発振器と、この第１の電圧制
御発振器の出力信号を分周する＠１０分ｍ器と、ＰＡＬ
テレビジ冒ンガン方式送色信号局波数で発振する発振器
と、前記第１の分局器の出力信号と前ε発振器の出力信
号の和周波数信号を得る第１の周波数変換回路と、前記
発振器の出力信号と再生カラーバースト信号とを位相比
較して誤差電圧を発生するＩＧ２の位相比較器と、この
第２の位相比較器の出力誤差電圧で制御される第２の電
圧制御発振器と、この第２の電圧制御発振器の出力信号
を分周する１ｇ２の分１ＩＩＩＩと、この第２の分局器
の出力信号と前ε発振器の出力信号との和周波数信号を
得る第２の周波数変換回路と、記録時に前記第１の周波
数変換回路の出力信号で入力されるＰＡＬ方式またはＳ
ＥＣ，ＡＭ方式の入力搬送色信号を低域周波数色信号に
変換し、 ＰＡＬ方式の再生時に前記第２の周波数変換
回路の出力信号で再生低域周波数色信号を元の搬送色信
号に変換するとともにＳＥＣＡＭ方式の再生時に前記第
１の周波数変換回路の出力信号で再生低域周波数色信号
を元の搬送色信号に変換する第３の周波数変換回路とを
備えたカラー映像信号のε録再主装置。 （２） 前記第２の電圧制御発振器は前記第１の電圧
制御発振器と、前記Ｉ！２０分ｍ器分前器１ｇｌの分局
器と、前記＠２の周波数変換回路は前記第１の周波数変
換回路とそれぞれ一つのものを共用し、ＰＡＬ方式また
はＳＥＣＡＭ方式の記録時に前（ｉ３１ｇ１の位相比較
器の出力誤差電圧を前記第１の電圧制御発振器へ加え、
ＰＡＬ方式の再生時に前６１１ｇ２０位相比較器の出
力誤差電圧を前記第１の電圧制御発振器へ加えるととも
にＳＥＣＡＭ方式の再生時に前記第１の位相比較器の出
力誤差電圧を前ε＠１の電圧制御発振器へ加える切換回
路を付設した特許請求の範囲第（１）項記載のカッ−映
像信号の記録再生装置。 （３） 前記ｓｇｌおよびＩｇ２０分局器は、フィー
ルド選択信号が加えられることにより一対のフィールド
のうち一方のみ出方信号の位相を１水平走査期間毎に９
０度ずつシフトするようになっている特許請求の範囲第
（１）項記載のカラー映倫信号の記録再生装置。[Claims] +11 A first phase comparator that generates an error voltage related to the horizontal synchronizing signal frequency; A first voltage controlled oscillator that oscillates, an @10 divider that frequency divides the output signal of the first voltage controlled oscillator, and a PAL
an oscillator that oscillates at the frequency of a television broadcasting color transmission signal station; a first frequency conversion circuit that obtains a sum frequency signal of an output signal of the first branching unit and an output signal of the previous ε oscillator; and an output signal of the oscillator. A phase comparator of IG2 that generates an error voltage by comparing the phases of the reproduced color burst signal and the reproduced color burst signal, a second voltage controlled oscillator that is controlled by the output error voltage of this second phase comparator, and a second frequency conversion circuit which obtains a sum frequency signal of 1g2 divided by 1III which divides the output signal of the voltage controlled oscillator, the output signal of this second divider and the output signal of the previous ε oscillator; PAL or S input signal from the first frequency conversion circuit
Converts the input carrier color signal of the EC or AM system to a low frequency color signal, and converts the reproduced low frequency color signal to the original carrier color signal using the output signal of the second frequency conversion circuit during reproduction of the PAL system. and a third frequency conversion circuit that converts the reproduced low frequency color signal into the original carrier color signal using the output signal of the first frequency conversion circuit during reproduction in the SECAM system. Device. (2) The second voltage controlled oscillator is connected to the first voltage controlled oscillator and the I! The 20-minute divider 1gl divider and the @2 frequency conversion circuit each share one thing with the first frequency conversion circuit. applying the output error voltage of the comparator to the first voltage controlled oscillator;
During PAL system reproduction, the output error voltage of the first 611g20 phase comparator is applied to the first voltage controlled oscillator, and during SECAM system reproduction, the output error voltage of the first phase comparator is applied to the previous ε@1 voltage controlled oscillator. A recording and reproducing apparatus for a video signal according to claim 1, further comprising a switching circuit for adding a switching circuit to a video signal. (3) The sgl and Ig20 splitter changes the phase of the output signal of only one of the pair of fields by 9 every horizontal scanning period by applying a field selection signal.
A recording and reproducing apparatus for color video signals according to claim (1), wherein the signal is shifted by 0 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56196049A JPS5896483A (en) | 1981-12-04 | 1981-12-04 | Recorder and reproducer for color video signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56196049A JPS5896483A (en) | 1981-12-04 | 1981-12-04 | Recorder and reproducer for color video signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5896483A true JPS5896483A (en) | 1983-06-08 |
Family
ID=16351339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56196049A Pending JPS5896483A (en) | 1981-12-04 | 1981-12-04 | Recorder and reproducer for color video signal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5896483A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0462746A2 (en) * | 1990-06-21 | 1991-12-27 | Gold Star Co. Ltd | Automatic reproducing system of a VCR |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55107391A (en) * | 1979-02-13 | 1980-08-18 | Victor Co Of Japan Ltd | Color video signal recording and reproduction system |
| JPS5635589A (en) * | 1979-08-31 | 1981-04-08 | Toshiba Corp | Color signal recording/reproducing circuit |
-
1981
- 1981-12-04 JP JP56196049A patent/JPS5896483A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55107391A (en) * | 1979-02-13 | 1980-08-18 | Victor Co Of Japan Ltd | Color video signal recording and reproduction system |
| JPS5635589A (en) * | 1979-08-31 | 1981-04-08 | Toshiba Corp | Color signal recording/reproducing circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0462746A2 (en) * | 1990-06-21 | 1991-12-27 | Gold Star Co. Ltd | Automatic reproducing system of a VCR |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4985781A (en) | Recording and/or reproducing apparatus in which a reference signal is used in a recording and/or reproducing part as well as in another part | |
| JPS5923154B2 (en) | Color video signal reproducing device | |
| US4100567A (en) | Compensating time-based errors in a reproduced video signal | |
| US4326216A (en) | Synchronous color conversion system | |
| US4567507A (en) | Color television signal conversion device | |
| US4851928A (en) | Apparatus for recording low and high bond components of a chrominance signal | |
| US4590510A (en) | System for processing a composite color television signal obtained from a recording medium | |
| JPS6057276B2 (en) | Video signal processing method | |
| JP2503546B2 (en) | Low frequency converter for carrier color signal | |
| JPS5896483A (en) | Recorder and reproducer for color video signal | |
| US5510898A (en) | Information signal recording apparatus | |
| JPS6141294A (en) | Recording and reproducing device | |
| US4477839A (en) | Color video signal reproducing apparatus | |
| JPS5849073B2 (en) | Time axis fluctuation correction device | |
| JP3129108B2 (en) | Video signal processing device | |
| JPS5832835B2 (en) | Carrier signal forming circuit with line offset | |
| JPH01138881A (en) | Recording and reproducing device | |
| KR890003519B1 (en) | Video tape recorder | |
| JP3132292B2 (en) | Color signal processing device | |
| JPH0213519B2 (en) | ||
| JPS6033032B2 (en) | video tape recorder | |
| JPS61219287A (en) | Video signal reproducing device | |
| JPS6143089A (en) | Magnetic recording and reproducing device | |
| JPS61219284A (en) | Video signal reproducing system | |
| JPH011392A (en) | Color signal processing device |