JPH06165216A - Chrominance signal recording circuit - Google Patents

Chrominance signal recording circuit

Info

Publication number
JPH06165216A
JPH06165216A JP43A JP30886692A JPH06165216A JP H06165216 A JPH06165216 A JP H06165216A JP 43 A JP43 A JP 43A JP 30886692 A JP30886692 A JP 30886692A JP H06165216 A JPH06165216 A JP H06165216A
Authority
JP
Japan
Prior art keywords
signal
recording
circuit
video signal
processing circuit
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
JP43A
Other languages
Japanese (ja)
Inventor
Katsutoshi Ijima
勝利 井島
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo Electric 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP43A priority Critical patent/JPH06165216A/en
Publication of JPH06165216A publication Critical patent/JPH06165216A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To automatically record different chrominance signals with the chrominance signal processor of one system by controlling a switching means, and turning a signal recording processing circuit into a state corresponding to the color sub-carrier frequency of an input video signal. CONSTITUTION:This circuit is equipped with a video signal input 4 for which a 3.58MHz video signal or a 4.43MHz video signal is inputted, recording circuit 5, first crystal vibrator 6 which sets the recording circuit 5 so that the 3.58MHz video signal can be recorded, and a second crystal vibrator 7 which sets the recording circuit 5 so that the 4.43MHz video signal can be recorded. Also, the circuit is equipped with a switching circuit 8 which selects one of first and second crystal vibrators 6 and 7, and connects it with the recording circuit 5, and a microcomputer 9. Then, when the generation of a color killer signal is detected, the microcomputer 9 changes a command outputted since then. At this time, the switching circuit 8 selects the second crystal vibrator 7, and the recording circuit 5 is turned to the state in which the 4.43MHz video signal can be processed.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、異なるカラーサブキャ
リアの周波数のビデオ信号を記録するための色信号記録
回路に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color signal recording circuit for recording video signals of different color subcarrier frequencies.

【0002】[0002]

【従来の技術】3.38MHzのカラーサブキャリア周
波数を有するNTSC方式のビデオ信号(以下、「3.
58MHzビデオ信号」)と4.43MHzのカラーサ
ブキャリア周波数を有するNTSC方式のビデオ信号
(以下、「4.43MHzビデオ信号」)の両方式のビ
デオ信号を一台のビデオテープレコーダで記録できるよ
うにするため、従来は図3の如く3.58MHzビデオ
信号記録用の記録回路1と、4.43MHzビデオ信号
記録用の記録回路2を設け、記録回路1からカラーキラ
ー信号が出力されると、切り替えスイッチ3が端子aか
ら端子bに切り替わり、記録回路2のビデオ信号を出力
するようになっている。
2. Description of the Related Art An NTSC video signal having a color subcarrier frequency of 3.38 MHz (hereinafter referred to as "3.
A video tape recorder capable of recording both video signals of a 58 MHz video signal ") and an NTSC video signal having a color subcarrier frequency of 4.43 MHz (hereinafter," 4.43 MHz video signal "). Therefore, conventionally, as shown in FIG. 3, a recording circuit 1 for recording a 3.58 MHz video signal and a recording circuit 2 for recording a 4.43 MHz video signal are provided, and switching is performed when a color killer signal is output from the recording circuit 1. The switch 3 is switched from the terminal a to the terminal b, and the video signal of the recording circuit 2 is output.

【0003】[0003]

【発明が解決しようとする課題】しかしながら、上記従
来の回路では2系統の記録回路を必要とする欠点があ
る。
However, the above-mentioned conventional circuit has a drawback that it requires two systems of recording circuits.

【0004】従って、本発明はかかる欠点を解決しよう
とするものである。
The present invention therefore seeks to overcome such drawbacks.

【0005】[0005]

【課題を解決するための手段】本発明は、カラーサブキ
ャリアの周波数が異なる複数のビデオ信号の記録が可能
なビデオレコーダにおいて、信号記録処理回路と、前記
信号記録処理回路の記録信号を決定する記録信号設定手
段と、前記記録信号設定手段段を切り替える切り替え手
段と、前記信号記録処理回路から得られるカラーキラー
信号を受け、前記切り替え手段を制御して、前記信号記
録処理回路を入力ビデオ信号のカラーサブキャリア周波
数に応じた状態になす制御手段とを備えた構成である。
According to the present invention, in a video recorder capable of recording a plurality of video signals having different color subcarrier frequencies, a signal recording processing circuit and a recording signal of the signal recording processing circuit are determined. A recording signal setting means, a switching means for switching the recording signal setting means stage, a color killer signal obtained from the signal recording processing circuit, and controlling the switching means to input the signal recording processing circuit to the input video signal. And a control means for controlling the color subcarrier frequency.

【0006】[0006]

【作用】上記手段によれば、記録回路からのカラーキラ
ー出力を受けると制御手段は、信号記録処理回路の記録
信号を決定する発振周波数設定手段を切り替える。
According to the above means, when the color killer output from the recording circuit is received, the control means switches the oscillation frequency setting means for determining the recording signal of the signal recording processing circuit.

【0007】[0007]

【実施例】以下、本発明の一実施例を図1および図2を
参照しつつ説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

【0008】図1は本発明を実施したビデオテープレコ
ーダの色信号記録回路の構成図であって、4は3.58
MHzビデオ信号または4.43MHzビデオ信号が入
力されるビデオ信号入力端子、5は信号記録処理回路、
6は該信号記録処理回路5を3.58MHzビデオ信号
に対し記録可能に設定するための第1水晶振動子、7は
前記信号記録処理回路5を4.43MHzビデオ信号に
対し記録可能に設定するための第2水晶振動子、8は前
記第1、第2水晶振動子6,7のいずれか一方を選択し
て処理回路5に接続する切り替えスイッチ回路、9はマ
イクロコンピュータ(マイコン)である。
FIG. 1 is a block diagram of a color signal recording circuit of a video tape recorder embodying the present invention, where 4 is 3.58.
MHz video signal or 4.43 MHz video signal input video signal input terminal, 5 is a signal recording processing circuit,
Reference numeral 6 is a first crystal oscillator for setting the signal recording processing circuit 5 so that it can record a 3.58 MHz video signal, and 7 sets the signal recording processing circuit 5 so that it can record a 4.43 MHz video signal. Is a changeover switch circuit for selecting one of the first and second crystal oscillators 6 and 7 and connecting it to the processing circuit 5, and 9 is a microcomputer.

【0009】次に図1の動作を図2のフローチャートを
参照しつつ説明する。
Next, the operation of FIG. 1 will be described with reference to the flowchart of FIG.

【0010】まず、当該ビデオテープレコーダに電源が
投入されると、マイコン9は初期設定のために信号記録
処理回路5に対し、3.58MHzビデオ信号を受信す
るコマンドを送る(S1)。
First, when the video tape recorder is powered on, the microcomputer 9 sends a command for receiving a 3.58 MHz video signal to the signal recording processing circuit 5 for initialization (S1).

【0011】信号処理回路5はかかるコマンドを受ける
と、3.58MHzビデオ信号を受けるように設定され
るが、このとき切り替えスイッチ回路8は第1水晶振動
子6を選択する。これによって、信号処理回路5は3.
58MHzビデオ信号を処理可能な状態となる。
When the signal processing circuit 5 receives such a command, it is set to receive the 3.58 MHz video signal. At this time, the changeover switch circuit 8 selects the first crystal unit 6. As a result, the signal processing circuit 5 is set to 3.
The 58 MHz video signal can be processed.

【0012】この後、マイコン9はステップ2において
信号処理回路5からカラーキラー信号が発生しているか
どうかをみて、カラーキラー信号が発生していなけれ
ば、いま現在送っているコマンドと同じコマンドを送り
続ける(S3)。
Thereafter, the microcomputer 9 checks in step 2 whether or not the color killer signal is generated from the signal processing circuit 5, and if the color killer signal is not generated, the same command as the command currently being sent is sent. Continue (S3).

【0013】また、ステップ2でカラーキラー信号が発
生していることが検出されると、いままで出していたコ
マンドを変更する(S4)。すなわち、いままで出して
いたコマンドが3.58MHzビデオ信号のコマンドで
あれば4.43MHzビデオ信号を選択するコマンドを
出力する。尚、カラーキラー信号が発生するということ
は、設定状態とは別の信号が入力されたことを示すもの
である。
When it is detected in step 2 that a color killer signal is generated, the command issued so far is changed (S4). That is, if the command that has been issued so far is a command for a 3.58 MHz video signal, a command for selecting a 4.43 MHz video signal is output. The generation of the color killer signal means that a signal different from the setting state is input.

【0014】そして、信号処理回路5はかかるコマンド
を受けると、4.43MHzビデオ信号を受けるように
設定されるが、このとき切り替えスイッチ回路8は第2
水晶振動子7を選択する。これによって、信号処理回路
5は4.43MHzビデオ信号を処理可能な状態とな
る。
When the signal processing circuit 5 receives such a command, it is set to receive the 4.43 MHz video signal.
Select the crystal oscillator 7. As a result, the signal processing circuit 5 becomes ready to process the 4.43 MHz video signal.

【0015】[0015]

【発明の効果】以上のように本発明によれば、一系統の
色信号処理回路で、異なる色信号の記録が自動的に行え
るという利点がある。
As described above, according to the present invention, there is an advantage that different color signals can be automatically recorded by one color signal processing circuit.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明を実施した色信号記録回路を示す図であ
る。
FIG. 1 is a diagram showing a color signal recording circuit embodying the present invention.

【図2】図1の動作を説明するためのフローチャートを
示す図である。
FIG. 2 is a diagram showing a flowchart for explaining the operation of FIG.

【図3】従来の色信号記録回路を示す図である。FIG. 3 is a diagram showing a conventional color signal recording circuit.

【符号の説明】 4 ビデオ信号入力端子 5 信号処理回路 6 第1水晶振動子 7 第2水晶振動子 8 切り替えスイッチ回路 9 マイクロコンピュータ[Explanation of Codes] 4 Video Signal Input Terminal 5 Signal Processing Circuit 6 First Crystal Resonator 7 Second Crystal Resonator 8 Changeover Switch Circuit 9 Microcomputer

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 カラーサブキャリアの周波数が異なる複
数のビデオ信号の記録が可能なビデオレコーダにおい
て、 信号記録処理回路と、 前記信号記録処理回路の記録信号を決定する記録信号設
定手段と、 前記記録信号設定手段を切り替える切り替え手段と、 前記信号記録処理回路から得られるカラーキラー信号を
受け、前記切り替え手段を制御して、前記信号記録処理
回路を入力ビデオ信号のカラーサブキャリア周波数に応
じた状態になす制御手段と、 を備える色信号記録回路。
1. A video recorder capable of recording a plurality of video signals having different color subcarrier frequencies, a signal recording processing circuit, recording signal setting means for determining a recording signal of the signal recording processing circuit, and the recording. Switching means for switching the signal setting means, receiving a color killer signal obtained from the signal recording processing circuit, and controlling the switching means to bring the signal recording processing circuit into a state according to the color subcarrier frequency of the input video signal. And a color signal recording circuit including:
JP43A 1992-11-18 1992-11-18 Chrominance signal recording circuit Pending JPH06165216A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP43A JPH06165216A (en) 1992-11-18 1992-11-18 Chrominance signal recording circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP43A JPH06165216A (en) 1992-11-18 1992-11-18 Chrominance signal recording circuit

Publications (1)

Publication Number Publication Date
JPH06165216A true JPH06165216A (en) 1994-06-10

Family

ID=17986204

Family Applications (1)

Application Number Title Priority Date Filing Date
JP43A Pending JPH06165216A (en) 1992-11-18 1992-11-18 Chrominance signal recording circuit

Country Status (1)

Country Link
JP (1) JPH06165216A (en)

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