JPS63181102A - Video tape recorder - Google Patents

Video tape recorder

Info

Publication number
JPS63181102A
JPS63181102A JP62012902A JP1290287A JPS63181102A JP S63181102 A JPS63181102 A JP S63181102A JP 62012902 A JP62012902 A JP 62012902A JP 1290287 A JP1290287 A JP 1290287A JP S63181102 A JPS63181102 A JP S63181102A
Authority
JP
Japan
Prior art keywords
tape
carrier frequency
recording
performance
mode
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
JP62012902A
Other languages
Japanese (ja)
Inventor
Masahiro Honjo
本城 正博
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP62012902A priority Critical patent/JPS63181102A/en
Publication of JPS63181102A publication Critical patent/JPS63181102A/en
Pending legal-status Critical Current

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Landscapes

  • Television Signal Processing For Recording (AREA)

Abstract

PURPOSE:To maximize the use of the performance of a head system and a tape by setting at least >=three kinds of FM carrier frequency. CONSTITUTION:When the user does not intend high band application in a VTR having a high band switch, the FM carrier frequency is selected as f1 regardless of the recording time mode and tape. In desiring the high band, when the recording time mode is selected to be a long time, e.g., the 6hr mode, the FM carrier frequency is selected as f2 for the high performance tape and selected as f3 for the high performance tape, selected as f4 for the 2hr mode and not high performance tape and as f5 for the high performance tape respectively. That is, the FM carrier frequency is selected from five kinds and the performance of tape, head system of the VTR are utilized sufficiently.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、高画質対応のビデオチープレコーグ(以下V
TRと略称する)に関するものである。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to video cheap recorders (hereinafter referred to as V
(abbreviated as TR).

従来の技術 従来、家庭用VTRにおいてFMキャリア周波数を上げ
ることにより画質改善が行なわれている。
2. Description of the Related Art Conventionally, image quality has been improved in home VTRs by increasing the FM carrier frequency.

これは、標準のFMキャリア周波数に対し、ハイバンド
モードスイッチをONすることにより、FMキャリアア
ンプが行なわれるものである。しかし、長時間記録モー
ドのように記録トラック幅が狭くなってくると、S/N
の劣化、やぶれの発生などが目立ってくるため、ハイバ
ンド化には、短時間記録モードのみ可能等の制限が行な
われている。しかし、高性能テープを用いることにより
、長時間モードでもハイバンド化が可能である。また高
性能テープにより短時間モードではさらにキャリアアッ
プが可能であり、つまりさらに高画質化が可能である。
In this case, FM carrier amplification is performed by turning on the high band mode switch for the standard FM carrier frequency. However, when the recording track width becomes narrow such as in long-time recording mode, the S/N
Since deterioration and tearing become noticeable, high-band recording is restricted to only short-time recording modes. However, by using high-performance tape, it is possible to achieve a high band even in long-time mode. Furthermore, the use of high-performance tape makes it possible to further increase the carrier in the short-time mode, which means that even higher image quality is possible.

つまり、現状のVTRではテープの性能を十分に引き出
していないことを意味していた。
This meant that the current VTRs were not able to take full advantage of the tape's performance.

発明が解決しようとする問題点 つまりハイバンドFMキャリア周波数が固定なため使用
者がハイバンドモードスイッチを選択した時に記録時間
モード、使用テープで決まるテープヘッド系の特性を十
分生かしきれていないという問題があった。さらには記
録時間モードの限定等の制限を行なう必要があるという
問題点があっ問題点を解決するための手段 上記問題点を解決するために、本発明は、使用者が選択
できるFMキャリア周波数アップを指示するハイバンド
スイッチからの情報と、使用者が選択できる短時間記録
か長時間記録かを指示する記録時間モードスイッチから
の情報と、テープの種類を意味するテープからの情報の
3つの情報により、FMキャリア周波数を少なくとも3
種類以上設定するように構成したものである。
The problem that the invention aims to solve is that because the high band FM carrier frequency is fixed, when the user selects the high band mode switch, the characteristics of the tape head system determined by the recording time mode and the tape used cannot be fully utilized. was there. Furthermore, there is a problem in that it is necessary to impose restrictions such as limitations on the recording time mode.Means for Solving the ProblemIn order to solve the above problem, the present invention provides an FM carrier frequency increase that can be selected by the user. information from the high band switch that instructs the recording, information from the recording time mode switch that instructs whether the user can select between short-time recording or long-term recording, and information from the tape that indicates the type of tape. By setting the FM carrier frequency to at least 3
It is configured so that more than one type can be set.

作用 本発明は上記した構成により使用者がハイバンド記録を
意図した時に、記録時間モード、使用テープに応じたF
Mキャリア周波数を選択することになり、テープ、ヘッ
ド系の性能を最大限使うことが可能となるものである。
Effect of the present invention With the above-described configuration, when the user intends to perform high-band recording, the F
By selecting the M carrier frequency, it is possible to maximize the performance of the tape and head system.

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。
EXAMPLE An example of the present invention will be described below with reference to the drawings.

第1図は、本発明によるFMキャリア周波数選沢を示す
図である。使用者がハイバンド化を意図しない時は、記
録時間モード、テープにかかわらずFMキャリア周波数
はflとなる。
FIG. 1 is a diagram illustrating FM carrier frequency selection according to the present invention. When the user does not intend to use a high band, the FM carrier frequency is fl regardless of the recording time mode or tape.

次にハイバンド化を意図した時、記録時間モードが長時
間、たとえば6時間モードの場合、高性能テープでなけ
れば、FMキャリア周波数f2、高性能テープであれば
FMキャリア周波数はf3、さらに2時間モードの場合
、高性能テープでなければFMキャリア周波数はS4、
高性能テープであればFMキャリア周波数はf5をそれ
ぞれ選択することになる。
Next, when intending to create a high band, if the recording time mode is long, for example 6 hours mode, the FM carrier frequency is f2 if the tape is not a high performance tape, the FM carrier frequency is f3 if it is a high performance tape, and then 2 In time mode, the FM carrier frequency is S4, unless it is a high performance tape.
For high-performance tapes, f5 is selected as the FM carrier frequency.

つまりFMキャリア周波数を、5種類の中から選択でき
ることになり、VTRの持つテープ、ヘッド系の性能を
十分生かすことが可能となるわけである。
In other words, the FM carrier frequency can be selected from among five types, making it possible to fully utilize the performance of the VTR's tape and head system.

第2図+alは周波数f1〜f5のスペクトルを示した
図である。ここで、周波数11が最も低く、周波数S、
が最も高く設定されることになるが、他の周波数f2〜
f4はお互い同じ周波数でも良くまたf、、f5と同じ
周波数でもよく、さらに周波数の高低の順序が入れかわ
っていてもよい。
FIG. 2+al is a diagram showing the spectrum of frequencies f1 to f5. Here, frequency 11 is the lowest, frequency S,
will be set highest, but other frequencies f2~
f4 may have the same frequency as each other, or may have the same frequency as f, , f5, or the order of the frequencies may be reversed.

なお、VTRのFMキャリア周波数は、通常映像信号の
シンクチンプレベルの周波数を示す。第2図(blに映
像信号をIMIIzのデビエーションでFM変調した時
のスペクトラムを示す。シンクチップ周波数がf+ ”
”3.4MHzで、デビエーション1MHzの場合であ
る。
Note that the FM carrier frequency of the VTR usually indicates the frequency of the sync chimp level of the video signal. Figure 2 (bl shows the spectrum when the video signal is FM modulated with the IMIIz deviation.The sync chip frequency is f + ”
``This is a case of 3.4 MHz and a deviation of 1 MHz.

また、選択されるFMキャリア周波数の1ffi[は、
実施例で述べた5種類にかぎるものではなく、3種類以
上であれば本発明の域を出るものではない。
In addition, 1ffi of the selected FM carrier frequency is
The present invention is not limited to the five types described in the embodiments, but three or more types are within the scope of the present invention.

以上のように本発明は、上記問題点を解決するために、
本発明は、使用者が選択できるFMキャリア周波数アッ
プを指示するハイバンドスイッチからの情報と、使用者
が選択できる短時間記録か長時間記録かを指示する記録
時間モードスイッチからの情報と、高性能テープを意味
するテープからの情報の3つの情報により、FMキャリ
ア周波数を少なくとも3種類以上設定するように構成し
たものである。
As described above, in order to solve the above problems, the present invention has the following features:
The present invention provides information from a high band switch that instructs to increase the FM carrier frequency that can be selected by the user, information from a recording time mode switch that instructs short-time recording or long-time recording that can be selected by the user, and information from a high band switch that instructs to increase the FM carrier frequency that can be selected by the user. The configuration is such that at least three types of FM carrier frequencies can be set based on three pieces of information from the tape, which means a performance tape.

発明の効果 本発明は上記した構成により使用者がハイバンド記録を
意図した時に、記録時間モード、使用チー、プに応じた
FMキャリア周波数を選択することになり、テープ、ヘ
ッド系の性能を最大限使うことが可能となるものであり
、ハイバンドスイッチを有するVTRにとって大なる効
果がある。
Effects of the Invention With the above-described configuration, the present invention allows the user to select the FM carrier frequency according to the recording time mode and the used chip when intending to perform high-band recording, thereby maximizing the performance of the tape and head system. This makes it possible to use it for a limited time, and has a great effect on VTRs that have a high band switch.

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

第1図は本発明の一実施例のFMキャリア周波数選択図
、第2図は第1図に示した周波数のスペクトラム図であ
る。
FIG. 1 is an FM carrier frequency selection diagram according to an embodiment of the present invention, and FIG. 2 is a spectrum diagram of the frequencies shown in FIG.

Claims (1)

【特許請求の範囲】[Claims] 使用者が選択できるFMキャリア周波数アップを指示す
るハイバンドスイッチからの情報と、使用者が選択でき
る短時間記録か長時間記録かを指示する記録時間モード
スイッチからの情報と、テープの種類を意味するテープ
からの情報の3つの情報により、FMキャリア周波数を
少なくとも3種類以上設定することを特徴とするビデオ
テープレコーダ。
Information from the high band switch that instructs the user to increase the FM carrier frequency, information from the recording time mode switch that instructs the user to select between short-time recording or long-term recording, and the type of tape. A video tape recorder characterized in that at least three types of FM carrier frequencies are set based on three types of information from a tape.
JP62012902A 1987-01-22 1987-01-22 Video tape recorder Pending JPS63181102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62012902A JPS63181102A (en) 1987-01-22 1987-01-22 Video tape recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62012902A JPS63181102A (en) 1987-01-22 1987-01-22 Video tape recorder

Publications (1)

Publication Number Publication Date
JPS63181102A true JPS63181102A (en) 1988-07-26

Family

ID=11818302

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62012902A Pending JPS63181102A (en) 1987-01-22 1987-01-22 Video tape recorder

Country Status (1)

Country Link
JP (1) JPS63181102A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57189312A (en) * 1981-05-18 1982-11-20 Hitachi Ltd Magnetic recording and reproducing device
JPS5912752U (en) * 1982-07-16 1984-01-26 日産自動車株式会社 Vehicle defroster device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57189312A (en) * 1981-05-18 1982-11-20 Hitachi Ltd Magnetic recording and reproducing device
JPS5912752U (en) * 1982-07-16 1984-01-26 日産自動車株式会社 Vehicle defroster device

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