JPS6113371U

JPS6113371U - Video disc player pickup control circuit

Info

Publication number: JPS6113371U
Application number: JP9423984U
Authority: JP
Inventors: 裕司三木; 真三宅
Original assignee: シャープ株式会社
Priority date: 1984-06-21
Filing date: 1984-06-21
Publication date: 1986-01-25

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図は本考案装置の１実施例のブロック図、第２図は
ＶＨＤ方式のビデオディスクとピックアツプ針の関係の
概要を示すための拡大斜視図、第３図は従来一般のＶＨ
Ｄ方式のビデオディスクプレーヤのトラッキングサーボ
回路のブロック図、第４図は本考案の１実施例の動作説
明のための信号波形図である。１３・・・駆動増幅器、１４・・・ピックアップ装置、
１５・・・差動増幅器、１６・・・ゼロクロス検出器、
１７・・・カウンタ、１８・・・ＣＰＵ，ｉ９・
・・ピックアップ移動機構。Fig. 1 is a block diagram of one embodiment of the device of the present invention, Fig. 2 is an enlarged perspective view showing the outline of the relationship between a VHD video disc and a pickup needle, and Fig. 3 is a conventional general VH
FIG. 4 is a block diagram of a tracking servo circuit of a D-type video disk player, and is a signal waveform diagram for explaining the operation of one embodiment of the present invention. 13...Drive amplifier, 14...Pickup device,
15...Differential amplifier, 16...Zero cross detector,
17...Counter, 18...CPU, i9.
...Pickup moving mechanism.

Claims

[Scope of utility model registration request]

In a video disc player equipped with a tracking servo circuit, there is provided a counting means for counting the number of tracks moved by the pickup needle based on two types of tracking control signals obtained from the tracking servo circuit, and a counting means for counting the number of tracks moved by the pickup needle based on two types of tracking control signals obtained from the tracking servo circuit; A pickup control circuit for a video disc player, comprising a movement control means for controlling movement of a pickup device.