JPS622392U - - Google Patents
Info
- Publication number
- JPS622392U JPS622392U JP1985091767U JP9176785U JPS622392U JP S622392 U JPS622392 U JP S622392U JP 1985091767 U JP1985091767 U JP 1985091767U JP 9176785 U JP9176785 U JP 9176785U JP S622392 U JPS622392 U JP S622392U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- disc
- phase comparison
- frequency
- 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 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Rotational Drive Of Disk (AREA)
- Control Of Electric Motors In General (AREA)
Description
第１図は本考案の一実施例を示す概略回路ブロ
ツク図、第２図及び第３図は同実施例の増幅回路
の異なる実施態様を示す回路図をそれぞれ示す。
Ｓ……アナログスイツチ、８……ロツク検出回
路、６……位相比較回路。
FIG. 1 is a schematic circuit block diagram showing one embodiment of the present invention, and FIGS. 2 and 3 are circuit diagrams showing different embodiments of the amplifier circuit of the same embodiment. S...Analog switch, 8...Lock detection circuit, 6...Phase comparison circuit.
Claims (1)
波数多重記録して成るビデオデイスクレコードを
再生して得られる再生パイロツト信号を入力する
ＰＬＬ回路の分周出力と固定の基準信号との位相
比較出力に基づいてデイスクモータの回転を制御
するビデオデイスクプレーヤのデイスクサーボ回
路に於て、 前記位相比較出力の位相ロツク状態を検出して
ロツク検出出力を発する位相ロツク検出回路と、 前記検出出力発生期間中前記ＰＬＬ回路同期引
込範囲を狭く設定するスイツチング回路とを、 それぞれ配して成るデイスクサーボの特性切換
回路。[Scope of Claim for Utility Model Registration] A frequency-divided output of a PLL circuit which inputs a reproduced pilot signal obtained by reproducing a video disc record obtained by frequency-multiplexing a constant frequency pilot signal onto a video track, and a fixed reference signal. In a disc servo circuit of a video disc player that controls the rotation of a disc motor based on a phase comparison output of the phase comparison output, the disc servo circuit includes: a phase lock detection circuit that detects a phase lock state of the phase comparison output and generates a lock detection output; A characteristic switching circuit for a disk servo comprising a switching circuit for narrowing the PLL circuit synchronization pull-in range during an output generation period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985091767U JPH0540717Y2 (en) | 1985-06-18 | 1985-06-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985091767U JPH0540717Y2 (en) | 1985-06-18 | 1985-06-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS622392U true JPS622392U (en) | 1987-01-08 |
| JPH0540717Y2 JPH0540717Y2 (en) | 1993-10-15 |
Family
ID=30647947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985091767U Expired - Lifetime JPH0540717Y2 (en) | 1985-06-18 | 1985-06-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0540717Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02145386U (en) * | 1989-05-11 | 1990-12-10 | ||
| JPH0366594U (en) * | 1989-10-30 | 1991-06-27 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49109015A (en) * | 1973-02-19 | 1974-10-17 | ||
| JPS5563407A (en) * | 1978-11-08 | 1980-05-13 | Hitachi Denshi Ltd | Phase comparator in servo circuit |
-
1985
- 1985-06-18 JP JP1985091767U patent/JPH0540717Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49109015A (en) * | 1973-02-19 | 1974-10-17 | ||
| JPS5563407A (en) * | 1978-11-08 | 1980-05-13 | Hitachi Denshi Ltd | Phase comparator in servo circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02145386U (en) * | 1989-05-11 | 1990-12-10 | ||
| JPH0366594U (en) * | 1989-10-30 | 1991-06-27 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0540717Y2 (en) | 1993-10-15 |