JP3265535B2 - TV signal receiver - Google Patents
TV signal receiverInfo
- Publication number
- JP3265535B2 JP3265535B2 JP05613291A JP5613291A JP3265535B2 JP 3265535 B2 JP3265535 B2 JP 3265535B2 JP 05613291 A JP05613291 A JP 05613291A JP 5613291 A JP5613291 A JP 5613291A JP 3265535 B2 JP3265535 B2 JP 3265535B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- ghost
- reference signal
- video
- elimination
- 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.)
- Expired - Fee Related
Links
Landscapes
- Picture Signal Circuits (AREA)
Description
【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。2. Description of the Related Art In recent years, with the progress of urbanization, ghost problems due to the effects of high-rise buildings and the like have become a problem in TV signal receiving devices such as television receivers. A reference signal is inserted into a TV signal and transmitted. The receiving side takes in the ghost removal reference signal, performs ghost detection, and performs ghost removal.
【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。However, a ghost removal reference signal is used in a band-limited device such as a video tape recorder.
When a TV signal including a signal is recorded and reproduced, the ghost removal reference signal is not a distortion due to a ghost but a distortion caused by nonlinearity. When such a distorted reproduced signal is received again by a television receiver with a ghost canceller, a problem arises in that normal operation is not performed. SUMMARY OF THE INVENTION The present invention solves such a conventional drawback. After a ghost elimination reference signal is fetched and the ghost elimination reference signal is used, a TV signal receiving apparatus that erases the ghost elimination reference signal and does not use it for subsequent processing is provided. 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信号を受信する受信手段と、前記受信手
段により受信されたＴＶ信号中の第１のビデオ信号から
前記ゴースト除去基準信号を抽出する信号抽出手段と、
前記信号抽出手段により抽出したゴースト除去基準信号
に基づいて前記第１のビデオ信号からゴースト成分を除
去した第２のビデオ信号を出力するゴースト除去手段
と、前記第２のビデオ信号から前記ゴースト除去基準信
号を消去する基準信号消去手段と、を備えたことを基本
的な特徴とする。In order to achieve the above object, a TV signal receiving apparatus according to the present invention comprises: a receiving means for receiving a TV signal including a ghost removal reference signal; and a TV receiving means for receiving the TV signal. Signal extraction means for extracting the ghost removal reference signal from a first video signal in the signal;
Ghost removal means for outputting a second video signal obtained by removing a ghost component from the first video signal based on the ghost removal reference signal extracted by the signal extraction means, and the ghost removal reference from the second video signal. And a reference signal erasing means for erasing a signal.
【０００５】[0005]
【作用】受信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、ゴースト除去手段により該受信
されたＴＶ信号中の第１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た第２のビ
デオ信号が出力される。そして基準信号消去手段により
第２のビデオ信号からゴースト除去基準信号が消去され
る。The TV signal containing the ghost removal reference signal is received by the receiving means, and the ghost is removed from the first video signal in the received TV signal based on the ghost removal reference signal by the ghost removal means. The second video signal is output. Then, the ghost removal reference signal is deleted from the second video signal by the reference signal erasing 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ＬＰＦ１
８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２３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。Embodiments 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. The signal received from the antenna 11 is input to a tuner 12, amplified to a required level by a 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 so as to control the frequency so as to operate stably. VIF
The video signal from the / SIF 13 is sent to the ghost canceller section X, where it is output to the ghost signal elimination circuit 2 after the ghost is removed or reduced. That is, VIF
The signal from / SIF13 is video AMP17 and LPF1
The digital signal is converted into a digital signal by the A / D converter 19 through the A / D converter 8 and sent to the arithmetic and control unit 1. The arithmetic and control unit 1 performs ghost removal based on the ghost canceller signal (ghost removal reference signal) included in the received signal. This ghost removal may be performed by a normal method used in clear vision or the like, 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 supplied to the arithmetic and control unit 1. Also, a clamp pulse is generated from the FSC generator 23, and an erase pulse is generated in the arithmetic and control unit 1 based on the clamp pulse. The clamp pulse and the erase pulse are sent from the arithmetic and control unit 1 to the ghost signal erase circuit 2. It is configured as follows.
【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。FIG. 2 shows an example of a specific configuration of the ghost signal elimination circuit 2. Here, the clamp pulse is supplied from the arithmetic and control unit 1 to the clamp unit 8 at the timing shown in FIG. 3, whereby the video signal is clamped and the DC level is fixed, and then the erase pulse is supplied to the erase circuit unit 9. As shown in FIG. 3, the ghost elimination reference signal is configured to be eliminated from the video signal. The signal from which the ghost signal is erased from the ghost signal elimination circuit 2 is sent to the Y / C chroma processing unit 30, the REC / PB amplifier 31, the head 32, and the FL similarly to the conventional video tape recorder.
YING / ERASE / OSC33, AFT servo unit 3
4, the recording and reproduction processing is performed. The audio signal is similarly processed by the audio processing unit 35 and output as an audio / video signal, or output 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 elimination reference signal is used for ghost elimination in the ghost canceller section X, it is erased by the ghost signal elimination circuit 2, so that a malfunction does not occur in the circuit system in the subsequent stage. .
【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
受信する受信手段と、前記受信手段により受信されたＴ
Ｖ信号中の第１のビデオ信号から前記ゴースト除去基準
信号を抽出する信号抽出手段と、前記信号抽出手段によ
り抽出したゴースト除去基準信号に基づいて前記第１の
ビデオ信号からゴースト成分を除去した第２のビデオ信
号を出力するゴースト除去手段と、前記第２のビデオ信
号から前記ゴースト除去基準信号を消去する基準信号消
去手段と、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 described above, the TV signal receiving apparatus according to the present invention has a receiving means for receiving a TV signal including a ghost removal reference signal, and a TV signal received by the receiving means.
Signal extraction means for extracting the ghost elimination reference signal from the first video signal in the V signal, and a ghost component which has been removed from the first video signal based on the ghost elimination reference signal extracted by the signal extraction means. 2 and a reference signal erasing means for erasing the ghost elimination reference signal from the second video signal, the ghost elimination reference signal is used after the ghost elimination reference signal is used. The elimination reference signal is erased, and there is no danger of causing a malfunction after that, and there is an effect that a smooth operation can be realized.
【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 illustrating an example of a ghost signal erasing circuit.
【図３】動作をを示す波形図。FIG. 3 is a waveform chart showing an operation.
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：ＬＰ
Ｆ、１９：Ａ／Ｄ変換器、２０：Ｄ／Ａ変換器、２１：
ＬＰＦ、２２：ＡＭＰ、２３：ＦＳＣ発生器、３０：Ｙ
／Ｃクロマプロセス部、３１：ＲＥＣ／ＰＢアンプ、３
２：ヘッド、３３：ＦＬＹＩＮＧ／ＥＲＡＳＥ／ＯＳ
Ｃ、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 erasure circuit, 8: clamp unit, 9: erasure circuit unit, 11: antenna, 12: tuner, 13: VIF / SIF, 14: AFT, 15:
Tuner control unit, 17: Video AMP, 18: LP
F, 19: A / D converter, 20: D / A converter, 21:
LPF, 22: AMP, 23: FSC generator, 30: Y
/ C chroma process section, 31: REC / PB amplifier, 3
2: Head, 33: FLYING / ERASE / OS
C, 34: ATF servo section, 35: audio processing section, 36: RF modulator.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H04N 5/21 H04N 5/44 H04N 5/765 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) H04N 5/21 H04N 5/44 H04N 5/765
Claims (2)
号を受信する受信手段と、 前記受信手段により受信されたＴＶ信号中の第１のビデ
オ信号から前記ゴースト除去基準信号を抽出する信号抽
出手段と、 前記信号抽出手段により抽出したゴースト除去基準信号
に基づいて前記第１のビデオ信号からゴースト成分を除
去した第２のビデオ信号を出力するゴースト除去手段
と、 前記第２のビデオ信号から前記ゴースト除去基準信号を
消去する基準信号消去手段と、 を備えたことを特徴とするＴＶ信号受信装置。1. A receiving means for receiving a TV signal including a ghost removal reference signal, and a signal extracting means for extracting the ghost removal reference signal from a first video signal in the TV signal received by the receiving means A ghost removing unit that outputs a second video signal obtained by removing a ghost component from the first video signal based on a ghost removal reference signal extracted by the signal extracting unit; and the ghost from the second video signal. A TV signal receiving apparatus comprising: a reference signal erasing unit for erasing a removal reference signal.
除去手段から発生するクランプパルスと消去パルスに基
づいて前記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 reference signal erasing unit erases the ghost elimination reference signal based on a clamp pulse and an erasing pulse generated from the ghost elimination unit.
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 JPH04271579A (en) | 1992-09-28 |
| JP3265535B2 true 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) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994008426A1 (en) * | 1992-10-01 | 1994-04-14 | Samsung Electronics Co., Ltd. | Video tape recorder with tv receiver front end and ghost-suppression circuitry |
-
1991
- 1991-02-26 JP JP05613291A patent/JP3265535B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04271579A (en) | 1992-09-28 |
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