JPS5932284A - Signal discriminator - Google Patents

Signal discriminator

Info

Publication number
JPS5932284A
JPS5932284A JP14184682A JP14184682A JPS5932284A JP S5932284 A JPS5932284 A JP S5932284A JP 14184682 A JP14184682 A JP 14184682A JP 14184682 A JP14184682 A JP 14184682A JP S5932284 A JPS5932284 A JP S5932284A
Authority
JP
Japan
Prior art keywords
signal
output
circuit
color difference
hid
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
Application number
JP14184682A
Other languages
Japanese (ja)
Inventor
Noriyuki Yamashita
紀之 山下
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Priority to JP14184682A priority Critical patent/JPS5932284A/en
Publication of JPS5932284A publication Critical patent/JPS5932284A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/44Colour synchronisation
    • H04N9/47Colour synchronisation for sequential signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE:To attain no-adjustment of a tuning circuit coil, by generating a discriminating signal representing that an input signal has a specific content in synchronizing with the end ridge of a pulse signal. CONSTITUTION:A chrominance signal Sch is applied from an input terminal 11 and a reference signal SR is applied from an input terminal 12 to a multiplier 13 respectively to form a product output, and an HID gate pulse PHG from a terminal 14 is applied to the multiplier 13 to extract the HID section only and the phase detection is attained through an LPF 15. When the HID section is a red color difference signal R-Y, since the frequency is equal to a reference signal, a signal X is obtained at an output terminal 15a of the LPF 15. On the other hand, when the HID section is a blue color difference signal B-Y, the signal X being almost triangle wave appears at the terminal 15a for about one period by the frequency difference with the reference signal. In detecting this difference, the discrimination of the red and blue color difference signal is attained.

Description

【発明の詳細な説明】 産業上の利用分野 この発明は信号判別器、例えばSECAM方式のカラー
映像信号における搬送色信号中の赤の色差信号(R−Y
)とHの色差信号(B−Y)を判別する場合や↑に用い
て好適な信号判別器に関する。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention is a signal discriminator, for example, a red color difference signal (RY
) and H color difference signals (B-Y) and for use in ↑.

背駄技律1とその問題点 一般にSECAM力式のカラー映像信号に訃いでは、そ
の搬送色(a号は、4.4.0625MHzの副搬送波
を赤の色差信号(R−Y)で糊波数変調した18号と、
425MHzの副搬送波を宵の色差信号(B−Y)で周
波数変調した信号が1水平区間毎に交互に配列された状
態となっており、各垂直帰線区間内のjTj +ff1
jN期イ3号の後の9個の水平区間には、台形波を赤の
色差信号(R−Y)に対応する水平区間と宵の色差信号
(B−Y)に対応する水平区間とで異なる周波数に周波
数変調した状態の色判別信号(+II D )を挿入し
ている。そしてその際に使用される信号11別器は、宵
の色差信号(B−Y)のとき・ぞルスを発生し、赤の色
差信号(R−Y )のときにはパルスを発生しないよう
な構成とされており、この青の色差信号(B−Y)の色
判別信号だけを4.40625MHzに変換する・Pル
スを作るために使用するようにしている。
Technique Rule 1 and its Problems Generally speaking, when producing SECAM-based color video signals, the carrier color (a is 4.4.0625 MHz subcarrier) is glued with a red color difference signal (R-Y). Wave number modulated No. 18,
The signals obtained by frequency modulating the 425 MHz subcarrier with the evening color difference signal (B-Y) are arranged alternately in each horizontal interval, and jTj + ff1 in each vertical retrace interval.
j In the nine horizontal sections after No. 3 of the N period, the trapezoidal wave is divided into a horizontal section corresponding to the red color difference signal (RY) and a horizontal section corresponding to the evening color difference signal (B-Y). A color discrimination signal (+II D ) frequency-modulated to a different frequency is inserted. The signal 11 separator used at this time is configured so that it generates a pulse when the evening color difference signal (B-Y) is generated, but does not generate a pulse when the red color difference signal (RY) is generated. Only the color discrimination signal of this blue color difference signal (B-Y) is converted to 4.40625 MHz and used to create the P pulse.

斯の種信号判別器として、従才例えば第1図に示すよう
なものが使用されており、人カフ1ili子(1)から
のHIDを含む搬送色信号をコンデンサ(2)を介して
乗算器(3)の一方の入力端に供給すると共に史にコン
デンサ(4)を介して乗算器(3)の他方の入力端に供
給して両者を乗算し、その積出力を低域P′e、器を構
成するコンデンサ(5)を通すことにより、その出力側
には第2図Aに示すようなその位相差に応じた電圧信号
むが取り出される。この信月svをバッファ回路(6)
を通して別な東−1器(7)の一方の入力側に供給する
と共に端子(8)から水平同期周波数fnの棒の%1波
数を有する第2図Bに示すような信号鍮を乗J?器(7
)の他力の入力側に供給して両者を乗算すれば、出力端
子(9)には第2図Cに示すような負の信号SNが得ら
れ、この負の信号SNを例えば宵の色差信号(B−Y 
)とすると、これによって赤の色差信号(R−Y)との
判別が可能となる。
As such a type signal discriminator, for example, the one shown in FIG. (3) and the other input terminal of the multiplier (3) via the capacitor (4) to multiply the two, and the product output is the low frequency P'e, By passing the voltage signal through the capacitor (5) constituting the device, a voltage signal corresponding to the phase difference as shown in FIG. 2A is taken out on the output side. This Shinzuki sv is a buffer circuit (6)
A signal as shown in FIG. 2B having a wave number of %1 of the horizontal synchronization frequency fn is supplied from the terminal (8) to one input side of another To-1 device (7) through J? Vessel (7
) to the input side of the other force and multiplying the two, a negative signal SN as shown in FIG. 2C is obtained at the output terminal (9). Signal (B-Y
), this makes it possible to distinguish it from the red color difference signal (RY).

ところで、第1図の如き従来回路の場合、入力信号をQ
の高い移相用の同調回路01に通し、周波数対位相の傾
斜を利用して検出(第3図参照)するようにしているた
めに同調回路(10)のコイル(10a)を調整する必
要があった。
By the way, in the case of the conventional circuit as shown in Fig. 1, the input signal is
It is necessary to adjust the coil (10a) of the tuning circuit (10) because the signal is passed through the tuning circuit 01 for a high phase shift and detection is performed using the slope of the frequency versus phase (see Figure 3). there were.

発明の目的 この発明は斯る点に誦み、無調整化が口1能な信号判別
器を提供するものである。
OBJECTS OF THE INVENTION The present invention addresses the above points and provides a signal discriminator that can be made without adjustment.

発明の概要 この発明では、基準信号と入力信号の位相差を検出して
電圧信号に変換する位相差検出手段と、異なる閾値を有
し、上記電圧信号より/4’ルス信号を形成するパルス
形成手段と、上記パルス信号の端縁に同期して、上記入
力信号が特定内容のものであることを表わす判別信号を
発生する判別信号発生手段とを具備することにより、無
調整化が可能となり、工数の削減がはがれる。
Summary of the Invention The present invention includes a phase difference detection means that detects a phase difference between a reference signal and an input signal and converts it into a voltage signal, and a pulse forming means that has a different threshold value and forms a /4' pulse signal from the voltage signal. and a discrimination signal generating means for generating a discrimination signal indicating that the input signal has a specific content in synchronization with the edge of the pulse signal, it is possible to eliminate the need for adjustment. Man-hours can be reduced.

実施例 以下、この発明の一実施例を第4図乃至第9図に基づい
て詳しく説明する。
EXAMPLE Hereinafter, an example of the present invention will be described in detail with reference to FIGS. 4 to 9.

第4図は本実施例の回路構成を示すもので、同図におい
て、入力端子α◇より第5図B K示すような搬送色(
M号8c)1を、入力端子〔1オより例えば282fH
(4,40625MHz )の基準信号sRe夫々中算
器uniに供給して積出力を作り、との積出力より端子
a−ttからの第5図Aに示すようなHID)f″−ト
・にルスpIlaを乗算器u1に供給してHID部のみ
を袖出し、これを低域p波器09に通すことにより位相
検波がなされる。例えば抽出されたHID部が赤の色差
信号(R−Y)であれば、その周波数は基準信号の周波
数(4,40625MHz)と等しいので、低域沖波器
(IFJの一方の出力側例えば出力端子(15g)には
第5図Cに示すように、傾斜零の信号Xが得られる。た
だし、この場合基準信号との位相関係が不規則なため、
電圧は定まらない。一方抽出されたHID部が宵の色差
信号(B−Y)であれば、その周波数272fヨ(4,
25MHz)と基準信号の周波数282fH(4,40
625MHz)との差が10f1(156,25kHz
)であるため、低域P波器α→の出力端子(15a)に
は第5図りに示すように、略三角波の信号Xが約1周期
だけ現われる。そこで、この両者の相違を検出すれは、
容易に青の色差信号(B−Y)であるか、赤の色差信号
(R−Y)であるかが判別できる。なお、低域P波器O
FJの他方の出力側すなわち出力端子(15b)には、
出力端子(15a)と逆相関係の信号Xが得られる。
FIG. 4 shows the circuit configuration of this embodiment. In the same figure, the conveyance colors (
M number 8c) 1 from the input terminal [1o, for example 282fH
The reference signal sRe (4,40625 MHz) is supplied to the intermediate multiplier uni respectively to produce a product output, and from the product output, the HID) f''-t as shown in FIG. 5A from the terminal a-tt is Phase detection is performed by supplying the signal pIla to the multiplier u1, extracting only the HID part, and passing it through the low-pass p wave generator 09.For example, the extracted HID part is the red color difference signal (R-Y ), the frequency is equal to the frequency of the reference signal (4,40625 MHz), so one output side of the low-frequency offshore transducer (IFJ), for example, the output terminal (15g), has a slope as shown in Figure 5C. A zero signal X is obtained.However, in this case, since the phase relationship with the reference signal is irregular,
The voltage is not fixed. On the other hand, if the extracted HID part is the evening color difference signal (B-Y), its frequency is 272fyo (4,
25MHz) and the reference signal frequency 282fH (4,40MHz).
625MHz) and the difference is 10f1 (156,25kHz)
), the substantially triangular wave signal X appears at the output terminal (15a) of the low-pass P-wave device α→ for only about one cycle, as shown in Figure 5. Therefore, to detect the difference between the two,
It can be easily determined whether the signal is a blue color difference signal (B-Y) or a red color difference signal (R-Y). In addition, the low-frequency P wave device O
On the other output side of the FJ, that is, the output terminal (15b),
A signal X having a negative phase relationship with the output terminal (15a) is obtained.

このようにして低域p波器aFJの出力端子(15a)
及び(]、5b)に得られた信号は、異なる閾値V7 
H* VT Lを有するヒステリシス特性の大きな電圧
比較器例えばシュミット回路0り及びα力に夫々供給さ
れる。いま、低域p波器a→の出力端子(15a)に得
られる信号Xを、第6図Bに示すように代表的に8棟類
(■〜■)の場合について見るに、信号のがシュミット
回路aQに供給されると、この信号■がシュミット回路
α時の閾値vTL以下になった時点でシュミット回路α
Qの出力信号■は第6図Cに示すように立下が9、閾値
VTHを越えた時点で立上がり、同様に信号■がシュミ
ット回路αQに供給されると、この信号■がシュミット
回路aQの閾値vTL以下になった時点でシュミット回
路α・の出力信号■は第6図りに示すように立下がfi
、HIDf−)パルスPIG (第6図A)の立下がり
時点で立上が9、以下同様にして信号■〜■がシュミッ
ト回路04に夫夫供給されると、その出力側にはこれ等
に対応して夫々第6図E〜Jに示すようなi4ルス状の
出力信号■〜■が得られる。
In this way, the output terminal (15a) of the low-frequency p-wave generator aFJ
The signals obtained in and (], 5b) have different threshold values V7
High hysteresis voltage comparators with H*VT L, for example Schmitt circuits, are applied to the zero and alpha voltages, respectively. Now, if we look at the signal X obtained at the output terminal (15a) of the low-frequency p-wave device a→ in the case of eight representative buildings (■ to ■) as shown in Figure 6B, we can see that the signal When this signal ■ is supplied to the Schmitt circuit aQ, when it becomes less than the threshold value vTL for the Schmitt circuit α, the Schmitt circuit α
As shown in FIG. 6C, the output signal ``Q'' falls at 9 and rises when it exceeds the threshold value VTH.Similarly, when the signal ``■'' is supplied to the Schmitt circuit αQ, this signal ``■'' is output to the Schmitt circuit aQ. When the output signal ■ of the Schmitt circuit α falls below the threshold value vTL, the fall becomes fi as shown in Figure 6.
, HIDf-) The rising edge is 9 at the falling edge of the pulse PIG (Fig. 6A), and in the same way, when the signals ■ to ■ are supplied to the Schmitt circuit 04, these signals are output on the output side. Correspondingly, i4 pulse-shaped output signals 1 to 2 are obtained as shown in FIGS. 6E to 6, respectively.

これよシュミット回路a・の出力信号の立上シ縁は、青
の色差信号(B−Y)のときだけ発生するので、これを
検出すればよいことがわかる。俳し、HIDf−)=ル
スPH1)の立下がり点は検出してはならない。
Since the rising edge of the output signal of the Schmitt circuit a occurs only in the case of the blue color difference signal (B-Y), it is understood that it is sufficient to detect this rising edge. However, the falling point of HIDf-)=RusPH1) must not be detected.

もっとも、この第6図C−Jからも明らかなように、シ
ュミット回路01奪の出力信号のうち、立上り縁の発生
しているのは出力信号(υ、(5)〜へ輿のみで、残り
の出力信号14)〜(4)に付いては立上り縁が発生し
てなく、従ってこのような位相関係のときは検出できな
い。
However, as is clear from Fig. 6 C-J, among the output signals of the Schmitt circuit 01, only the output signal (υ, (5) to No rising edge occurs in the output signals 14) to (4), and therefore, such a phase relationship cannot be detected.

そこで、このような位相関係にある出力信号の場合でも
検出できるように、低域vP波器09の出力端子(15
b)1111にシュミット回路00と同様のシュミット
回路0′I)を設け、このシュミット回路0ηへ、出力
端子(]、5b)に現われる第7図Bに示すような出力
信号X(出力端子(15a)に現われる出力18号と逆
相の信号)を供給する。なお、ここでも代表的に8揮g
1((V〜(8))の出力信号xl考えるものとする。
Therefore, in order to be able to detect even output signals with such a phase relationship, the output terminal (15
b) A Schmitt circuit 0'I) similar to the Schmitt circuit 00 is provided at 1111, and an output signal X (output terminal (15a) as shown in FIG. ) is supplied with a signal of opposite phase to the output No. 18 appearing on ). In addition, here as well, 8 g
1 ((V~(8)) output signal xl is considered.

この結果、シュミット回路0′hの出力側にはこれ等に
対応した夫々第7図C−Jに示すような・ぐルス状の出
力信号(V〜(輿が11)られる。そしてこの場合にケ
:1、シュミット回路07)の出力信号のうち、立上り
縁の発生しているのは出力信号(V〜(4)のみで、こ
れにより、シュミット回路OQ側で検出できない位相関
係にあった出力信号(2)〜(りに付いても横18でき
ることになる。この結果、シュミット回路(1υの出力
信号の立上がりとシュミット回路(171の出力信号の
立上がりのいずれか一方が発生したC)、これを青の色
差41号(B−Y)の検出出力とすれば、如(i”、1
なる位相w、i係にある場合でもHIDグートノ?ルス
■)JIGの立上がり時点から3/8〜7/8周期の間
に出力が得られることになる。
As a result, the output side of the Schmitt circuit 0'h is provided with a corresponding output signal (V~ (palette 11) as shown in FIG. 7 C-J).In this case, K: 1. Among the output signals of the Schmitt circuit 07), only the output signal (V~(4)) has a rising edge, and this causes the output to have a phase relationship that cannot be detected on the Schmitt circuit OQ side. Even if the signal (2) to (ri) is attached, a horizontal 18 is generated.As a result, either the rise of the output signal of the Schmitt circuit (1υ) or the rise of the output signal of the Schmitt circuit (171) occurs (C), this If is the detection output of blue color difference No. 41 (B-Y), then as (i”, 1
Even if it is in the phase w, I will not be able to use HID? (2) Output is obtained during 3/8 to 7/8 cycles from the rising edge of JIG.

なお、赤の色差信号(R−Y)のとき(」、シュミット
回路0り及びQ71の各出カイへ号が立下がつでも13
5゜以上の大きな位相変動がない限り、つまり低域p波
器09の出力信号がシュミット回路(161及び(17
)の閾値VTH1vTLの両方をよきらない限りシ」、
\シー」二からないため出力は出ない。
In addition, when the red color difference signal (R-Y) ('', even if the signal falls to each output of Schmitt circuit 0 and Q71,
As long as there is no large phase variation of 5° or more, that is, the output signal of the low-frequency p-wave generator 09 is
) unless both of the threshold values VTH1vTL are cleared,
There is no output because there is no output.

このようにして得られたシュミット回路0()の出力信
号(第8図Bに代表的に81で示す)は、インバータ0
→により第8図Cに示すように反転された信号S2とし
て面接ノア回路(1傷の一力の入力端に供給されると共
に更に遅延機1#Pを有するインバータ(イ)で第8図
りに示すように反転された信号S5としてノア回路09
の他方の入力端に供給され、もってノア回路Hの出力側
には信号S1の後縁に同期して第8図Eに示すようなパ
ルス信号84が月ソリ出される。この信号S4はオア回
路QOを介してアンド回路に)の一方の入力端に供給さ
れ、このアンド回路(イ)の他方の入力端には端子Q4
1からのHII)ケ゛−トパルスPHQ (第8図A)
が供給され、もって出力端子(イ)には第8図Fに示す
ような・ぞルス信号S5が宵の色差信号(B−Y)を表
わす判別信号として取り出される。
The output signal of the Schmitt circuit 0 ( ) obtained in this way (representatively indicated by 81 in FIG. 8B) is output from the inverter 0
→ As shown in Fig. 8C, the inverted signal S2 is supplied to the input terminal of the interview NOR circuit (1 output) and is further connected to the inverter (A) having a delay unit 1#P as shown in Fig. 8. NOR circuit 09 as the inverted signal S5 as shown
As a result, a pulse signal 84 as shown in FIG. 8E is output from the output side of the NOR circuit H in synchronization with the trailing edge of the signal S1. This signal S4 is supplied to one input terminal of the AND circuit (A) via the OR circuit QO, and the other input terminal of this AND circuit (A) is supplied to the terminal Q4.
HII from 1) Kate pulse PHQ (Figure 8A)
is supplied to the output terminal (a), and a color signal S5 as shown in FIG. 8F is taken out as a discrimination signal representing the evening color difference signal (B-Y).

また、同様にシュミット回路(17)の出力信号は、イ
ンバータe→で反転された後、面接ノア回路@の一方の
入力端に供給されると共に遅延機能を有するインバータ
(イ)を介1−てノア回路翰の他方の入力端に供給され
、もってノア回路(イ)の出力側には、シュミット回路
0ηの出力信号の後縁に同期して上述のパルス46号8
4同様の信号が取り出され、更にアンド回路に)におい
てHID r −トノクルスP□。と共に論工!P処理
され、出力端子に)に上述同様にの色差信号(+3−Y
) 7.(表わす判別信号として取り出される。
Similarly, the output signal of the Schmitt circuit (17) is inverted by the inverter e→, and then supplied to one input terminal of the interview NOR circuit @1- via the inverter (a) having a delay function. It is supplied to the other input end of the Norr circuit (a), and the output side of the Norr circuit (a) receives the above-mentioned pulse No.
4 A similar signal is taken out and further into an AND circuit) in HID r - Tonoculus P□. Discussion with you! The same color difference signal (+3-Y
) 7. (It is extracted as a discrimination signal representing

なお、第9図において、HIDケ9−トノンルスP)I
Q(第9図A)の後縁に同期して第9図Bに示すように
例えばシュミット回路θQの出力信号S1が立上がると
、インバータ(旧及びい力の出力側に1,1夫々第9図
C及びDに示すような信号S2+ s5がイlられ、こ
の結果ノア回路0)の出力側には第9図Eに示すような
信号S4が発生さ、れる。そしてこの(g号S4はオア
回路Hを介してアンド回路(イ)の一方の入力端に供給
されても、この時点ではアンド回路伐2の他方の入力端
に供給されるHID &” −) ”ルスPIGはロー
レベルにあるので、アンド回路(イ)の出力S5は第9
図Fに示すようにローレベルとなり、もってHID r
 −) ノfルスPH(lの後縁に生じるシュミット回
路OQの出力信号の立上りが実質的にマスクされ、HI
Dダートパルスの立下がり点が検出されることはない。
In addition, in FIG. 9, HID
For example, when the output signal S1 of the Schmitt circuit θQ rises as shown in FIG. 9B in synchronization with the trailing edge of Q (FIG. 9A), the inverter (1 and 1 on the output side of the old and fresh power) A signal S2+s5 as shown in FIGS. 9C and 9D is inputted, and as a result, a signal S4 as shown in FIG. 9E is generated at the output side of the NOR circuit 0). And even if this (g S4 is supplied to one input terminal of the AND circuit (A) via the OR circuit H, at this point, HID &"-) is supplied to the other input terminal of the AND circuit 2. ``Since the Lus PIG is at low level, the output S5 of the AND circuit (A) is at the 9th level.
As shown in Figure F, the level becomes low, and HID r
-) The rise of the output signal of the Schmitt circuit OQ that occurs at the trailing edge of PH(l) is substantially masked,
The falling point of the D dart pulse is never detected.

このことはシュミット回路θη(111に付いても同様
である。
This also applies to the Schmitt circuit θη (111).

応用例 なお、上述の実施例では、SECAM方式のカラー映像
信号における搬送色信号中の赤の色差信号(R−Y )
と■の色差信号(B−Y)を111別する場合をし11
にとり説明したが、これに限定されることなく、同様の
機能を甥するその他の場合も同様に適用可能である。
Application example In the above embodiment, the red color difference signal (R-Y) in the carrier color signal in the SECAM color video signal is
When the color difference signals (B-Y) of and ■ are separated by 111,
Although described above, the present invention is not limited thereto, and can be similarly applied to other cases in which similar functions are provided.

発明の効果 上述の如くこの発明によれば、基準信号と入カイ11号
の位相差を検出して電圧信号に変換し、この+(15厘
(8号に基づいて19丁定形状の・?ルノ、46号を形
成し、このパルス信号の端縁に同期1〜て入力4.i号
がI侍定内谷のものであることを表わす判別48号を3
6生するようにしたので、容易に入力信号の内容が判別
でき、しかも従来の如き一1整が不傳となり、無調整化
がb1能となるので、調整に安する工数の削減かはかね
る。また、PAL方式の場合色信号の削搬送波j^1波
数1d 4.43 MHzであり、この周波数は基準周
波u (4,40625MIIz )に近いので、この
場合も赤の色差信号(R−Y)と略々同様応答しなく、
もってPAL方式かSECAM方式かの検出にも適用で
きる。
Effects of the Invention As described above, according to the present invention, the phase difference between the reference signal and the input signal No. 11 is detected and converted into a voltage signal, and this + Runo, No. 46 is formed, synchronized with the edge of this pulse signal 1 to input 4. Discrimination No. 48 indicating that No.
Since the input signal is adjusted to 6 times, the content of the input signal can be easily determined.Moreover, the conventional adjustment becomes irregular and no adjustment becomes possible, which reduces the number of man-hours required for adjustment. . In addition, in the case of the PAL system, the carrier wave j^1 wave number 1d of the color signal is 4.43 MHz, and this frequency is close to the reference frequency u (4,40625 MIIz), so in this case as well, the red color difference signal (R-Y) It doesn't respond in much the same way as
Therefore, it can also be applied to detection of PAL system or SECAM system.

【図面の簡単な説明】[Brief explanation of the drawing]

自51図は従来回路の一例を示す七)親図、第2図及び
第3図は第1図の動作鶴1明に<l1h−jる/′こめ
の波形図、第4図はこの発明の一実hla例を示す(、
★成図、第5図乃至第9図は第4図の!1ij1作説明
に<4’;iる。へめの波形図である。 (+1は乗算器、0υは低域P波器、Fl(+ 、 (
1’+’> &、Iンユミット回路、(1→r *’i
fi * (2る。a’ptよイン・マーク、I肉、(
ノQはノア回路、’ADliオア回路、に)はアンド回
路である。 同        松  隈  秀  盛、7
Figure 51 shows an example of the conventional circuit. 7) Figures 2 and 3 are waveform diagrams of the operation of Figure 1. Here is an example of a real hla (,
★Compiled diagrams, Figures 5 to 9 are the same as Figure 4! 1ij 1 work description <4';i. It is a waveform diagram of Heme. (+1 is a multiplier, 0υ is a low-frequency P wave generator, Fl(+, (
1'+'>&, I unit circuit, (1→r *'i
fi * (2ru. a'pt in mark, I meat, (
'Q' is a NOR circuit, 'ADli' is an OR circuit, 'ADli' is an AND circuit. Hidemori Matsukuma, 7

Claims (1)

【特許請求の範囲】[Claims] 基学信号と入力信号の位相差を検出して電圧信号に変換
する位相差検出手段と、異なる閾値を有し、上記市5圧
信号よりパルス信号を形成するノ!ルス形成手段と、上
記・?ルス信号の端縁に同期して、上記人力信号が特定
内容のものであることを表わす’t’l別伯号を発生す
る判別信月発生手段とを具備して成る信号11別器。
It has phase difference detection means that detects the phase difference between the basic signal and the input signal and converts it into a voltage signal, and has different threshold values, and forms a pulse signal from the above-mentioned 5-voltage signal. Luz forming means and the above? and a discriminating signal generating means for generating a 't'l mark indicating that the human input signal has a specific content in synchronization with the edge of the signal.
JP14184682A 1982-08-16 1982-08-16 Signal discriminator Pending JPS5932284A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14184682A JPS5932284A (en) 1982-08-16 1982-08-16 Signal discriminator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14184682A JPS5932284A (en) 1982-08-16 1982-08-16 Signal discriminator

Publications (1)

Publication Number Publication Date
JPS5932284A true JPS5932284A (en) 1984-02-21

Family

ID=15301517

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14184682A Pending JPS5932284A (en) 1982-08-16 1982-08-16 Signal discriminator

Country Status (1)

Country Link
JP (1) JPS5932284A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5598983A (en) * 1993-05-25 1997-02-04 Shimano Inc. Baitcasting reel having a clutch mechanism for transmitting a drive from a handle to a spool

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5598983A (en) * 1993-05-25 1997-02-04 Shimano Inc. Baitcasting reel having a clutch mechanism for transmitting a drive from a handle to a spool
US5772139A (en) * 1993-05-25 1998-06-30 Shimano Inc. Baitcasting reel having a clutch mechanism for transmitting a drive from a handle to a spool

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