JPS61156061U - - Google Patents
Info
- Publication number
- JPS61156061U JPS61156061U JP3921885U JP3921885U JPS61156061U JP S61156061 U JPS61156061 U JP S61156061U JP 3921885 U JP3921885 U JP 3921885U JP 3921885 U JP3921885 U JP 3921885U JP S61156061 U JPS61156061 U JP S61156061U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- video disc
- generated
- reproduction signal
- 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
- 238000001514 detection method Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Moving Of Head For Track Selection And Changing (AREA)
Description
第1図は本考案の一実施例を示す回路ブロツク
図、第2図は同要部波形説明図である。
1……ビデオデイスクレコード、4……ピツク
アツプ、8……比較回路、18……再生信号検出
回路、19……デイスク識別回路。
FIG. 1 is a circuit block diagram showing an embodiment of the present invention, and FIG. 2 is an explanatory diagram of waveforms of the main parts thereof. 1... Video disc record, 4... Pickup, 8... Comparison circuit, 18... Playback signal detection circuit, 19... Disc identification circuit.
Claims (1)
ラル状に形成する第1のビデオデイスクレコード
と、該第1ビデオデイスクレコードに比し内方か
ら線速一定の記録トラツクを外方に向けてスパイ
ラル状に記録する第2のビデオデイスクレコード
を再生するビデオデイスクプレーヤに於て、 再生信号中に含まれる同期情報と基準信号とを
位相比較する比較回路と、 該比較回路出力に基づいてデイスクモータの回
転を制御するデイスクモータ駆動回路と、 前記デイスクモータが所定回転速度に達したと
き起動完了検出回路出力を発する起動完了検出回
路と、 再生信号が発生したとき再生信号検出出力を発
する再生信号検出回路と、 前記起動完了検出出力発生時に再生信号検出出
力が発生しないことを検出してデイスク識別出力
を発生するデイスク識別回路と、 前記デイスクモータ起動時ピツクアツプを第2
デイスクレコードの記録トラツク始端に対向せし
め、前記デイスク識別出力発生時に前記ピツクア
ツプをデイスクの外方側に強制移送するピツクア
ツプ移送手段とを、 それぞれ配して成るビデオデイスクプレーヤの
ピツクアツプアクセス回路。[Claims for Utility Model Registration] A first video disc record in which a recording track with a constant angular velocity is formed in a spiral shape outward, and a recording track with a constant linear velocity from the inside compared to the first video disc record. In a video disc player that plays back a second video disc record in which tracks are recorded in a spiral manner outwards, a comparison circuit that compares the phase of synchronization information included in the playback signal and a reference signal; a disk motor drive circuit that controls the rotation of the disk motor based on a circuit output; a startup completion detection circuit that outputs a startup completion detection circuit output when the disk motor reaches a predetermined rotational speed; and a reproduction signal when a reproduction signal is generated. a reproduction signal detection circuit that generates a detection output; a disk identification circuit that detects that the reproduction signal detection output is not generated when the startup completion detection output is generated and generates a disk identification output;
A pick-up access circuit for a video disc player, comprising pick-up transfer means which are arranged opposite to the start end of a recording track of a disc record and forcibly transport the pick-up to the outside of the disc when the disc identification output is generated.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3921885U JPH045108Y2 (en) | 1985-03-19 | 1985-03-19 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3921885U JPH045108Y2 (en) | 1985-03-19 | 1985-03-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61156061U true JPS61156061U (en) | 1986-09-27 |
JPH045108Y2 JPH045108Y2 (en) | 1992-02-13 |
Family
ID=30546968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3921885U Expired JPH045108Y2 (en) | 1985-03-19 | 1985-03-19 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH045108Y2 (en) |
-
1985
- 1985-03-19 JP JP3921885U patent/JPH045108Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPH045108Y2 (en) | 1992-02-13 |
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