JPH06335031A - Broadcast system discrimination circuit - Google Patents
Broadcast system discrimination circuitInfo
- Publication number
- JPH06335031A JPH06335031A JP12125893A JP12125893A JPH06335031A JP H06335031 A JPH06335031 A JP H06335031A JP 12125893 A JP12125893 A JP 12125893A JP 12125893 A JP12125893 A JP 12125893A JP H06335031 A JPH06335031 A JP H06335031A
- Authority
- JP
- Japan
- Prior art keywords
- discrimination
- circuit
- signal
- discriminating
- video
- 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
Links
Landscapes
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、テレビジョン受信機と
ビデオテ−プレコ−ダとを一体化した複合映像機器にお
ける放送方式判別回路に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broadcasting system discriminating circuit in a composite video device in which a television receiver and a video tape recorder are integrated.
【０００２】[0002]
【従来の技術】近年、テレビジョン受信機とビデオテ−
プレコ−ダを一体化した複合映像機器が増えつつある。2. Description of the Related Art In recent years, television receivers and video
The number of composite video devices that integrate a precoder is increasing.
【０００３】上記複合映像機器の放送方式判別回路はテ
レビジョン受信機部とビデオテ−プレコ−ダ部の双方に
設けられている。The broadcasting system discriminating circuit of the composite video equipment is provided in both the television receiver section and the video tape recorder section.
【０００４】以下、従来の放送方式判別回路について説
明する。図３は従来のテレビジョン受信機とビデオテ−
プレコ−ダを一体化した複合映像機器の放送方式判別回
路の回路構成を示すブロック図である。A conventional broadcast system discrimination circuit will be described below. FIG. 3 shows a conventional television receiver and video terminal.
FIG. 6 is a block diagram showing a circuit configuration of a broadcast system determination circuit of a composite video device in which a precoder is integrated.
【０００５】図３において、３１はビデオテ−プレコ−
ダ部の映像信号の放送方式判別を行う方式判別回路、３
２はテレビジョン受信機部の映像信号の放送方式判別を
行う方式判別回路、３３はマイクロコンピュ−タ、３４
はテレビジョン受信機部とビデオテ−プレコ−ダ部から
の映像信号を切り換える映像信号切換スイッチである。In FIG. 3, 31 is a video tape recorder.
A system discriminating circuit for discriminating the broadcasting system of the video signal of the D block, 3
2 is a system discriminating circuit for discriminating the broadcasting system of the video signal of the television receiver section, 33 is a microcomputer, 34
Is a video signal selection switch for switching the video signals from the television receiver section and the video tape recorder section.
【０００６】以上のように構成された従来の複合映像機
器の放送方式判別回路について以下その動作を説明す
る。The operation of the conventional broadcasting system discriminating circuit of the composite video equipment configured as described above will be described below.
【０００７】ビデオテ−プレコ−ダ部からの映像信号は
方式判別回路３１に供給される。判別結果はビデオテ−
プレコ−ダ部の方式切換信号として出力される。The video signal from the video tape recorder unit is supplied to the system discriminating circuit 31. Discrimination result is video
It is output as a system switching signal of the precoder section.
【０００８】また映像信号切換スイッチ３４で切り換え
られた映像信号は方式判別回路３２に供給される。判別
結果はテレビジョン受信機部の方式切換信号として出力
される。映像信号の方式判別ができない場合は、使用者
が操作し設定する事により方式固定を行う。この場合に
マイクロコンピュ−タ３３から制御信号が方式判別回路
３１及び３２に供給される。この制御信号によって方式
判別回路３１及び３２は方式判別を停止し固定された方
式で動作する。The video signal switched by the video signal changeover switch 34 is supplied to the system discrimination circuit 32. The determination result is output as a system switching signal of the television receiver section. If the video signal system cannot be discriminated, the system is fixed by the user operating and setting. In this case, a control signal is supplied from the microcomputer 33 to the system discriminating circuits 31 and 32. By this control signal, the system discrimination circuits 31 and 32 stop the system discrimination and operate in a fixed system.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら、上記し
た従来の回路構成では、テレビジョン受信機部のとビデ
オテ−プレコ−ダ部の双方で方式判別を行い判別結果が
相違した場合、双方の判別結果によってテレビジョン受
信機部のとビデオテ−プレコ−ダ部の双方が相違したま
まの放送方式で動作するため使用者が操作設定する必要
があるという問題点を有していた。However, in the above-mentioned conventional circuit configuration, when the system discrimination is performed in both the television receiver section and the video tape recorder section and the discrimination results are different, both discrimination results are obtained. Therefore, both the television receiver section and the video tape recorder section operate in a different broadcasting system, which requires a user to set the operation.
【００１０】本発明は、テレビジョン受信機部とビデオ
テ−プレコ−ダ部の双方で方式判別を行い判別結果が相
違した場合においても、使用者が操作設定する事を必要
としない放送方式判別回路を提供することを目的として
いる。According to the present invention, a broadcasting system discriminating circuit which does not require the user to make an operation setting even when the discrimination is made by both the television receiver section and the video tape recorder section and the discrimination results are different. Is intended to provide.
【００１１】[0011]
【課題を解決するための手段】この目的を達成するため
に本発明の放送方式判別回路は、従来のマイクロコンピ
ュ−タからの一方的な制御信号に加え、判別信号を読み
込み双方の判別信号を比較判別する。また、垂直偏向周
波数判別回路からの判別信号、音声検波回路への音声方
式切換で補うことにより、判別感度の向上を図る。In order to achieve this object, the broadcasting system discrimination circuit of the present invention reads the discrimination signal of both sides in addition to the one-way control signal from the conventional microcomputer. Compare and judge. Further, the discrimination signal from the vertical deflection frequency discriminating circuit and the voice system switching to the voice detecting circuit are supplemented to improve the discrimination sensitivity.
【００１２】[0012]
【作用】この構成によって、従来のマイクロコンピュ−
タからの一方的な制御信号に加え、判別信号を読み込み
双方の判別信号を比較判別する事により、また、垂直偏
向周波数判別回路からの判別信号、音声検波回路への音
声方式切換で補うことにより、判別感度の向上が図られ
る。With this configuration, the conventional microcomputer
In addition to the one-way control signal from the controller, by reading the discrimination signal and comparing and discriminating both discrimination signals, and by supplementing the discrimination signal from the vertical deflection frequency discrimination circuit and the audio system switching to the audio detection circuit. The discrimination sensitivity can be improved.
【００１３】[0013]
【実施例】以下、本発明の一実施例について図面を参照
しながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
【００１４】図１において、１１はビデオテ−プレコ−
ダ部の映像信号の方式判別を行う方式判別回路、１２は
テレビジョン受信機部の映像信号の方式判別を行う方式
判別回路、１３は判別信号の比較判別を行うマイクロコ
ンピュ−タ、１４はテレビジョン受信機部とビデオテ−
プレコ−ダ部からの映像信号を切り換える映像信号切換
スイッチである。In FIG. 1, 11 is a video tape recorder.
A system discriminating circuit for discriminating a video signal system of a television section, a system discriminating circuit 12 for discriminating a video signal system of a television receiver section, a microcomputer 13 for comparing and discriminating discrimination signals, and a television set 14. John receiver section and video terminal
It is a video signal selector switch for switching the video signal from the pre-coder section.
【００１５】以上のように構成された複合映像機器の映
像信号判別回路について、以下その動作を説明する。The operation of the video signal discriminating circuit of the composite video equipment configured as described above will be described below.
【００１６】ビデオテ−プレコ−ダ部からの映像信号は
方式判別回路１１に供給される。判別結果はビデオテ−
プレコ−ダ部の方式切換信号として出力される。The video signal from the video tape recorder unit is supplied to the system discrimination circuit 11. Discrimination result is video
It is output as a system switching signal of the precoder section.
【００１７】また映像信号切換スイッチ１４で切り換え
られた映像信号は方式判別回路１２に供給される。判別
結果はテレビジョン受信機部の方式切換信号として出力
される。マイクロコンピュ−タ１３は方式判別回路１１
及び１２から判別信号を読み込む。図２は本発明におけ
る判別に関するフロ−チャ−トである。The video signal switched by the video signal selector switch 14 is supplied to the system discriminating circuit 12. The determination result is output as a system switching signal of the television receiver section. The microcomputer 13 is a system discrimination circuit 11
And 12 read the discrimination signal. FIG. 2 is a flowchart regarding the discrimination in the present invention.
【００１８】図２のフロ−チャ−トに示すように、テレ
ビジョン受信機部とビデオテ−プレコ−ダ部の双方から
読み込んだ方式判別結果が相違した場合は、音声検波回
路１６を制御している音声方式切換信号に基づき４．５
ＭＨｚ時はＮＴＳＣという形式で補正を加える。As shown in the flow chart of FIG. 2, when the system discrimination results read from both the television receiver section and the video tape recorder section are different, the audio detection circuit 16 is controlled. 4.5 based on the audio system switching signal
At MHz, correction is made in the form of NTSC.
【００１９】さらに、垂直偏向周波数判別回路１５から
の判別信号によって、５０Ｈｚ時にはＰＡＬ、６０Ｈｚ
時にはＮＴＳＣにという形式で補正を加える。Further, according to the discrimination signal from the vertical deflection frequency discrimination circuit 15, PAL at 60 Hz, 60 Hz
Sometimes we make corrections in the form of NTSC.
【００２０】以上の比較判別処理を行った後、マイクロ
コンピュ−タ１３は方式判別回路１１及び、１２に制御
信号を供給する。この制御信号によって方式判別回路１
１及び１２は方式判別を停止し固定された方式で動作す
る。After performing the above comparison / discrimination processing, the microcomputer 13 supplies a control signal to the system discrimination circuits 11 and 12. The system discrimination circuit 1 by this control signal
1 and 12 stop the system discrimination and operate in a fixed system.
【００２１】[0021]
【発明の効果】以上のように本発明は、従来の放送方式
判別回路でのマイクロコンピュ−タからの一方的な制御
信号に加え、判別信号を読み込み双方の判別信号を比較
判別する事により判別感度の向上を図る。また、垂直偏
向周波数判別回路からの判別信号、音声検波回路への音
声方式切換で補うことにより、判別感度の向上を図られ
る。As described above, according to the present invention, in addition to the one-sided control signal from the microcomputer in the conventional broadcasting system discrimination circuit, the discrimination signal is read and the discrimination signals of both sides are compared and discriminated. Aim to improve sensitivity. Further, the discrimination signal from the vertical deflection frequency discrimination circuit and the voice system switching to the voice detection circuit are supplemented by the discrimination signal, whereby the discrimination sensitivity can be improved.
【図１】本発明の一実施例における放送方式判別回路の
回路構成を示すブロック図FIG. 1 is a block diagram showing a circuit configuration of a broadcasting system discrimination circuit according to an embodiment of the present invention.
【図２】本発明の一実施例における放送方式判別回路の
判別に関するフロ−チャ−ト図FIG. 2 is a flowchart showing the discrimination of a broadcasting system discrimination circuit according to an embodiment of the present invention.
【図３】従来の放送方式判別回路における回路構成を示
すブロック図FIG. 3 is a block diagram showing a circuit configuration in a conventional broadcast system discrimination circuit.
１１ 方式判別回路 １２ 方式判別回路 １３ マイクロコンピュ−タ １４ 映像信号切換スイッチ １５ 垂直偏向周波数判別回路 １６ 音声検波回路 11 system discriminating circuit 12 system discriminating circuit 13 micro computer 14 video signal changeover switch 15 vertical deflection frequency discriminating circuit 16 audio detection circuit
Claims (3)
−ダとを一体化した複合映像機器において、テレビジョ
ン受信機部とビデオテ−プレコ−ダ部双方に放送方式判
別回路を設け双方の放送方式判別結果を比較判別する事
を特徴とする放送方式判別回路。1. In a composite video device in which a television receiver and a video tape recorder are integrated, a broadcasting system discriminating circuit is provided in both the television receiver portion and the video tape recorder portion so as to discriminate between them. A broadcasting system discrimination circuit characterized by comparing and discriminating results.
別結果と音声方式切換信号を用いて比較判別する事を特
徴とする請求項１記載の放送方式判別回路。2. The broadcasting system discrimination circuit according to claim 1, wherein the discrimination is made using the comparison discrimination result of both the broadcasting system discrimination circuits and the audio system switching signal.
別結果と垂直偏向周波数の判別信号を用いて比較判別す
る事を特徴とする請求項１記載の放送方式判別回路。3. The broadcasting system discrimination circuit according to claim 1, wherein the discrimination is made by using a comparison discrimination result of both the broadcasting system discrimination circuits and a discrimination signal of a vertical deflection frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05121258A JP3116659B2 (en) | 1993-05-24 | 1993-05-24 | Broadcast system discrimination circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05121258A JP3116659B2 (en) | 1993-05-24 | 1993-05-24 | Broadcast system discrimination circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06335031A true JPH06335031A (en) | 1994-12-02 |
| JP3116659B2 JP3116659B2 (en) | 2000-12-11 |
Family
ID=14806807
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05121258A Expired - Fee Related JP3116659B2 (en) | 1993-05-24 | 1993-05-24 | Broadcast system discrimination circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3116659B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6316138B1 (en) | 1994-07-11 | 2001-11-13 | Mitsubishi, Jukogyo Kabushiki Kaisha | Solid oxide electrolyte fuel cell |
-
1993
- 1993-05-24 JP JP05121258A patent/JP3116659B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3116659B2 (en) | 2000-12-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |