JPS59138057U

JPS59138057U - Position detection circuit for pick-up playback element

Info

Publication number: JPS59138057U
Application number: JP3092183U
Authority: JP
Inventors: 阿部　良三; 桜井　正樹
Original assignee: 日本ビクター株式会社
Priority date: 1983-03-03
Filing date: 1983-03-03
Publication date: 1984-09-14
Also published as: JPH0135337Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本出願人が先に提案した回転記録媒体のトラッ
クパターンの一例を模式的に示す図、第２図及び第３図
は夫々本考案回路により位置検出されるピックアップ再
生素子が再生をする回転記　−録媒体の記録範囲を示す
断面図及び第３の参照信号記録長さく記録角度）を示す
平面図、第４図は本考案回路の一実施例を示す回路系統
図である。１・・・円盤状回転記録媒体（ディスク）、３〜５・・
・参照信号ｆｐ３記録部分、６・・・レストスイッチ、
７・・・再生信号入力端子、８・・・ｆｐａ検出回路、
９・・・マイクロコンピュータ、１０・・・入カポ７ト
、１１・・・長さ判定回路、１２〜１５・・・長さ判定
信号出力端子、Ｌ■・・・リードイン部分、ＰＡ・・・
プログラム記録範囲、ＬＯ・・・リードアウト部分。、　　　Ｉ　　２１　　　二Ｎ− 一 −ＰＡ−斗に −；１３ｃｍFIG. 1 is a diagram schematically showing an example of a track pattern of a rotating recording medium previously proposed by the present applicant, and FIGS. 2 and 3 are diagrams showing reproduction by a pickup reproduction element whose position is detected by the circuit of the present invention. FIG. 4 is a circuit system diagram showing an embodiment of the circuit of the present invention. 1...Disc-shaped rotating recording medium (disc), 3-5...
・Reference signal fp3 recording part, 6... rest switch,
7... Reproduction signal input terminal, 8... fpa detection circuit,
9...Microcomputer, 10...7 input ports, 11...Length judgment circuit, 12-15...Length judgment signal output terminal, L■...Lead-in part, PA...・
Program recording range, LO... lead-out part. , I 21 2N- 1-PA-Toni-; 13cm

Claims

[Claims for Utility Model Registration] A first reference signal is recorded on one side of a spiral or concentric track on which an information signal is recorded, and a second reference signal is recorded on the other side, and , - a position detection circuit of a reproducing element that picks up and reproduces a recorded green signal of a rotating recording medium in which a third reference signal is recorded for a predetermined period at a switching position of the first and second reference signals for each rotation; The third reference signal has a recording length that is different from each other in the program recording range where the information signal program is recorded and the lead-in portion and lead-out portion where the information signal program is not recorded. a reference signal detection circuit for discriminating and separating the third reference signal from the reproduction signal of the reproduction element and obtaining a detection signal during the reproduction period; and a reference signal detection circuit for obtaining a detection signal during the reproduction period; rest switch means that continues to output a DC signal only when It consists of a length determination circuit that outputs a length determination signal to a negative output terminal of a plurality of output terminals according to the duration of the input signal, and the reproduction is performed by the length determination signal from the length determination circuit. It was configured to detect the position of the element. Position detection circuit for pickup playback element.