JPH04271579A - Tv signal receiver - Google Patents

Tv signal receiver

Info

Publication number
JPH04271579A
JPH04271579A JP3056132A JP5613291A JPH04271579A JP H04271579 A JPH04271579 A JP H04271579A JP 3056132 A JP3056132 A JP 3056132A JP 5613291 A JP5613291 A JP 5613291A JP H04271579 A JPH04271579 A JP H04271579A
Authority
JP
Japan
Prior art keywords
signal
ghost
reference signal
circuit
ghost removal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP3056132A
Other languages
Japanese (ja)
Other versions
JP3265535B2 (en
Inventor
Masataka Okada
岡 田  正 孝
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.)
Faurecia Clarion Electronics Co Ltd
Original Assignee
Clarion Co Ltd
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 Clarion Co Ltd filed Critical Clarion Co Ltd
Priority to JP05613291A priority Critical patent/JP3265535B2/en
Publication of JPH04271579A publication Critical patent/JPH04271579A/en
Application granted granted Critical
Publication of JP3265535B2 publication Critical patent/JP3265535B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Picture Signal Circuits (AREA)

Abstract

PURPOSE:To prevent malfunction in the circuit system at a post-stage by deleting a ghost elimination signal with a ghost elimination signal delete circuit after the ghost elimination signal is used for eliminating ghost. CONSTITUTION:A signal received from an antenna 11 is fed to a ghost canceller section X via a tuner 12 and a VIF/SIF 13, in which ghost is eliminated or reduced and the result is outputted to a ghost signal delete circuit 2. That is, the video signal from the VIF/SIF 13 is fed to an arithmetic controller 1 via a video AMP 17, an LPF 18 and an A/D converter 19 and ghost is eliminated based on a ghost elimination reference signal included in the reception signal. Moreover, a delete pulse is generated by the arithmetic controller 1 and a clamp pulse and the delete pulse are fed to the ghost signal delete circuit 2 together with the video signal and the circuit 2 eliminates the ghost elimination reference signal from the video signal.

Description

【発明の詳細な説明】[Detailed description of the invention]

【0001】0001

【産業上の利用分野】この発明はビデオテープレコーダ
等のTV信号受信装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a TV signal receiving apparatus such as a video tape recorder.

【0002】0002

【従来の技術】近年都市化の進展に伴い高層ビル等の影
響によるゴースト障害がテレビ受像機などのTV信号受
信装置において問題になっており、これらのゴーストを
除去するために送信側でゴースト除去基準信号をTV信
号に挿入して送信することが行われている。受信側では
このゴースト除去基準信号を取り込み、ゴースト検出を
行ってゴースト除去を行っている。
[Background Art] In recent years, with the progress of urbanization, ghost disturbances caused by the influence of high-rise buildings have become a problem in TV signal receiving devices such as television receivers, and in order to remove these ghosts, ghost removal is required on the transmitting side. A reference signal is inserted into a TV signal and transmitted. On the receiving side, this ghost removal reference signal is taken in, ghost detection is performed, and ghost removal is performed.

【0003】0003

【発明が解決しようとする課題】しかし、ビデオテープ
レコーダ等の帯域制限のあるものでゴースト除去基準信
号信号を含んだTV信号を記録再生すると、このゴース
ト除去基準信号は本来のゴーストによる歪ではなく、非
線形によって生じた歪になる。このような歪のある再生
された信号を再びゴーストキャンセラ付きのテレビ受像
機で受信した場合正常な動作がなされない問題が生じる
。本発明はこのような従来の欠点を解決し、ゴースト除
去基準信号を取り込んでゴースト除去基準信号を使用し
た後は、このゴースト除去基準信号を消去して以後の処
理に使わないTV信号受信装置を提供することを目的と
する。
[Problem to be Solved by the Invention] However, when a TV signal containing a ghost removal reference signal signal is recorded and played back using a device with a band limit such as a video tape recorder, this ghost removal reference signal is not the distortion caused by the original ghost. , resulting in distortion caused by nonlinearity. If such a distorted reproduced signal is received again by a television receiver equipped with a ghost canceller, a problem arises in that the television receiver does not operate normally. The present invention solves these conventional drawbacks, and after capturing the ghost removal reference signal and using the ghost removal reference signal, the TV signal receiving device erases the ghost removal reference signal and does not use it for subsequent processing. The purpose is to provide.

【0004】0004

【課題を解決するための手段】上記目的を達成するため
に本発明のTV信号受信装置は、ゴースト除去基準信号
が含まれたTV信号を受信する手段と、該受信する手段
により受信されたTV信号中のビデオ信号から前記ゴー
スト除去基準信号信号に基づいてゴーストを除去する手
段と、該除去する手段からの出力信号からゴースト除去
基準信号を消去する手段とを備えたことを基本的な特徴
とする。
[Means for Solving the Problems] In order to achieve the above object, the TV signal receiving device of the present invention includes means for receiving a TV signal including a ghost removal reference signal, and a TV signal received by the receiving means. The basic characteristics include means for removing a ghost from a video signal in a signal based on the ghost removal reference signal signal, and means for erasing the ghost removal reference signal from an output signal from the removing means. do.

【0005】[0005]

【作用】受信する手段によりゴースト除去基準信号が含
まれたTV信号が受信され、除去する手段により該受信
されたTV信号中のビデオ信号から前記ゴースト除去基
準信号に基づいてゴーストが除去される。そして消去す
る手段により該除去する手段からの出力信号からゴース
ト除去基準信号が消去される。
The receiving means receives a TV signal containing a ghost removal reference signal, and the removing means removes ghosts from the video signal in the received TV signal based on the ghost removal reference signal. Then, the ghost removal reference signal is erased from the output signal from the eliminating means by the eliminating means.

【0006】[0006]

【実施例】以下本発明の実施例を図面に基づいて説明す
る。図1は、本発明をビデオテープレコーダに適用した
実施例である。アンテナ11から受信した信号はチュー
ナ12に入力され、VIF/SIF13で必要なレベル
まで増幅され、検波され、ビデオ信号とオーディオ信号
に変換される。VIF/SIF13から出力されたAF
T信号はAFT14及びチューナ制御装置15に送られ
、チューナ12にフィードバックされて、周波数が安定
に働くように制御するように構成されている。VIF/
SIF13からのビデオ信号はゴーストキャンセラー部
Xに送られ、ここでゴーストが除去または軽減された後
にゴースト信号消去回路2に出力される。即ちVIF/
SIF13からの信号はビデオAMP17とLPF18
を介してA/D変換器19でデジタル信号に変換され、
演算制御装置1に送られる。演算制御装置1では受信さ
れた信号に含まれるゴーストキャンセラ信号(ゴースト
除去基準信号)に基づいてゴースト除去を行う。このゴ
ースト除去はクリアビジョン等において用いられる通常
の方法を用いればよく、詳細な説明は省略する。アンプ
17からの出力はまたFSC発生器23に入力してサブ
キャリア(Fsc)を発生させ、これを演算制御装置1
に供給するように構成されている。またFSC発生器2
3からはクランプパルスが発生され、これに基づいて演
算制御装置1において消去パルスが作られて、演算制御
装置1からはクランプパルスと消去パルスとがゴースト
信号消去回路2に送られるように構成されている。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment in which the present invention is applied to a video tape recorder. A signal received from the antenna 11 is input to the tuner 12, amplified to a required level by the VIF/SIF 13, detected, and converted into a video signal and an audio signal. AF output from VIF/SIF13
The T signal is sent to the AFT 14 and the tuner control device 15, and is fed back to the tuner 12 to control the frequency so that it operates stably. VIF/
The video signal from the SIF 13 is sent to the ghost canceller section X, where the ghost is removed or reduced, and then output to the ghost signal cancellation circuit 2. That is, VIF/
The signal from SIF13 is video AMP17 and LPF18
is converted into a digital signal by an A/D converter 19 via
It is sent to the arithmetic and control unit 1. The arithmetic and control unit 1 performs ghost removal based on a ghost canceller signal (ghost removal reference signal) included in the received signal. This ghost removal may be performed using a normal method used in clear vision, etc., and a detailed description thereof will be omitted. The output from the amplifier 17 is also input to the FSC generator 23 to generate a subcarrier (Fsc), which is sent to the arithmetic and control unit 1.
is configured to supply. Also, FSC generator 2
3 generates a clamp pulse, based on which an erase pulse is generated in the arithmetic control device 1, and the arithmetic control device 1 sends the clamp pulse and the erase pulse to the ghost signal canceling circuit 2. ing.

【0007】ゴースト信号消去回路2の具体的な構成の
一例を図2に示す。ここではクランプ部8に図3に示す
タイミングでクランプパルスが演算制御装置1より供給
され、これによりビデオ信号がクランプされてDCレベ
ルが固定され、次に消去回路部9に消去パルスが供給さ
れ、図3に示すようにビデオ信号からゴースト除去基準
信号が消去されるように構成されている。ゴースト信号
消去回路2からのゴースト信号が消去された信号は従来
のビデオテープレコーダと同様にY/Cクロマプロセス
部30、REC/PBアンプ31及びヘッド32、FL
YING/ERASE/OSC33、AFTサーボ部3
4により記録、再生処理される。またオーディオ信号も
オーデイオプロセス部35により同様に処理され、オー
ディオ/ビデオ信号として出力されるか、或はRFモジ
ュレータ36を介してRF信号として出力される。
An example of a specific configuration of the ghost signal canceling circuit 2 is shown in FIG. Here, a clamp pulse is supplied from the arithmetic and control unit 1 to the clamp section 8 at the timing shown in FIG. As shown in FIG. 3, the ghost removal reference signal is configured to be removed from the video signal. The ghost signal-eliminated signal from the ghost signal erasing circuit 2 is sent to the Y/C chroma processing section 30, the REC/PB amplifier 31, the head 32, and the FL as in the conventional video tape recorder.
YING/ERASE/OSC33, AFT servo section 3
4, recording and reproduction processing is performed. Furthermore, the audio signal is similarly processed by the audio processing unit 35 and outputted as an audio/video signal, or outputted as an RF signal via the RF modulator 36.

【0008】以上の構成においては、ゴースト除去基準
信号はゴーストキャンセラー部Xにおいてゴースト除去
に用いられた後は、ゴースト信号消去回路2により消去
されるため、後段の回路系において誤動作を引き起こす
ことがない。
In the above configuration, after the ghost removal reference signal is used for ghost removal in the ghost canceller section X, it is erased by the ghost signal cancellation circuit 2, so that it does not cause malfunction in the subsequent circuit system. .

【0009】[0009]

【発明の効果】以上説明したように本発明のTV信号受
信装置は、ゴースト除去基準信号が含まれたTV信号を
受信する手段と、該受信する手段により受信されたTV
信号中のビデオ信号から前記ゴースト除去基準信号信号
に基づいてゴーストを除去する手段と、該除去する手段
からの出力信号からゴースト除去基準信号を消去する手
段とを備えているため、ゴースト除去基準信号を使用し
た後はこのゴースト除去基準信号は消去され、以後誤動
作などを起こす危険がなく、円滑な動作を実現できる効
果がある。
As explained above, the TV signal receiving apparatus of the present invention includes means for receiving a TV signal including a ghost removal reference signal, and
The ghost removal reference signal includes means for removing a ghost from a video signal in the signal based on the ghost removal reference signal signal, and means for erasing the ghost removal reference signal from an output signal from the ghost removal means. After using the ghost removal reference signal, this ghost removal reference signal is erased, which has the effect of realizing smooth operation without the risk of malfunctions.

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

【図1】本発明の一実施例を示すブロック図。FIG. 1 is a block diagram showing one embodiment of the present invention.

【図2】ゴースト信号消去回路の一例を示す回路図。FIG. 2 is a circuit diagram showing an example of a ghost signal cancellation circuit.

【図3】動作をを示す波形図。FIG. 3 is a waveform diagram showing the operation.

【符号の説明】[Explanation of symbols]

1:演算制御装置、2:ゴースト信号消去回路、8:ク
ランプ部、9:消去回路部、11:アンテナ、12:チ
ューナ、13:VIF/SIF、14:AFT、15:
チューナ制御装置、17:ビデオAMP、18:LPF
、19:A/D変換器、20:D/A変換器、21:L
PF、22:AMP、23:FSC発生器、30:Y/
Cクロマプロセス部、31:REC/PBアンプ、32
:ヘッド、33:FLYING/ARASE/OSC、
34:ATFサーボ部、35:オーデイオプロセス部、
36:RFモジュレータ。
1: Arithmetic control unit, 2: Ghost signal cancellation circuit, 8: Clamp section, 9: Elimination circuit section, 11: Antenna, 12: Tuner, 13: VIF/SIF, 14: AFT, 15:
Tuner control device, 17: Video AMP, 18: LPF
, 19: A/D converter, 20: D/A converter, 21: L
PF, 22: AMP, 23: FSC generator, 30: Y/
C chroma process section, 31: REC/PB amplifier, 32
:Head, 33:FLYING/ARASE/OSC,
34: ATF servo section, 35: Audio process section,
36: RF modulator.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】  ゴースト除去基準信号が含まれたTV
信号を受信する手段と、該受信する手段により受信され
たTV信号中のビデオ信号から前記ゴースト除去基準信
号に基づいてゴーストを除去する手段と、該除去する手
段からの出力信号からゴースト除去基準信号を消去する
手段と、を備えたことを特徴とするTV信号受信装置。
[Claim 1] A TV including a ghost removal reference signal
means for receiving a signal; means for removing a ghost from a video signal in a TV signal received by the receiving means based on the ghost removal reference signal; and a ghost removal reference signal from an output signal from the removing means. A TV signal receiving device characterized by comprising: means for erasing.
【請求項2】  ゴースト除去基準信号を消去する手段
が、前記除去する手段から発生するクランプパルスと消
去パルスに基づいてゴースト除去基準信号を消去する請
求項1に記載のTV信号受信装置。
2. The TV signal receiving apparatus according to claim 1, wherein the means for eliminating the ghost removal reference signal erases the ghost removal reference signal based on a clamp pulse and an erase pulse generated from the eliminating means.
JP05613291A 1991-02-26 1991-02-26 TV signal receiver Expired - Fee Related JP3265535B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP05613291A JP3265535B2 (en) 1991-02-26 1991-02-26 TV signal receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP05613291A JP3265535B2 (en) 1991-02-26 1991-02-26 TV signal receiver

Publications (2)

Publication Number Publication Date
JPH04271579A true JPH04271579A (en) 1992-09-28
JP3265535B2 JP3265535B2 (en) 2002-03-11

Family

ID=13018552

Family Applications (1)

Application Number Title Priority Date Filing Date
JP05613291A Expired - Fee Related JP3265535B2 (en) 1991-02-26 1991-02-26 TV signal receiver

Country Status (1)

Country Link
JP (1) JP3265535B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07501676A (en) * 1992-10-01 1995-02-16 サムスン エレクトロニクス カンパニー リミテッド Video tape recorder with television receiver front end and ghost suppression circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07501676A (en) * 1992-10-01 1995-02-16 サムスン エレクトロニクス カンパニー リミテッド Video tape recorder with television receiver front end and ghost suppression circuit

Also Published As

Publication number Publication date
JP3265535B2 (en) 2002-03-11

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