JPS632262U - - Google Patents
Info
- Publication number
- JPS632262U JPS632262U JP9655086U JP9655086U JPS632262U JP S632262 U JPS632262 U JP S632262U JP 9655086 U JP9655086 U JP 9655086U JP 9655086 U JP9655086 U JP 9655086U JP S632262 U JPS632262 U JP S632262U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- reproduction
- synchronization signal
- separation
- 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
- 238000000926 separation method Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
- Rotational Drive Of Disk (AREA)
- Television Signal Processing For Recording (AREA)
Description
第１図は本考案の時間軸誤差補正装置のブロツ
ク図、第２図はその波形図である。
１……同期分離回路、２……比較回路、３……
発生回路、４……ループスイツチ、５……増幅回
路、６……イコライザ、７……増幅回路、８……
モータ、９……スピンドルサーボループ、１１…
…補正回路、１２……同期分離回路、１３……比
較回路、１４……ループスイツチ、１５……増幅
回路、１６……イコライザ、１７……増幅回路、
１８……発振回路、１９……サーボループ、２１
，２２……比較器、２３，２４……基準電圧発生
回路、２５……検出回路、２６……オア回路。
FIG. 1 is a block diagram of the time axis error correction device of the present invention, and FIG. 2 is a waveform diagram thereof. 1... Synchronization separation circuit, 2... Comparison circuit, 3...
Generating circuit, 4... Loop switch, 5... Amplifying circuit, 6... Equalizer, 7... Amplifying circuit, 8...
Motor, 9...Spindle servo loop, 11...
...correction circuit, 12 ... synchronization separation circuit, 13 ... comparison circuit, 14 ... loop switch, 15 ... amplifier circuit, 16 ... equalizer, 17 ... amplifier circuit,
18...Oscillation circuit, 19...Servo loop, 21
, 22... comparator, 23, 24... reference voltage generation circuit, 25... detection circuit, 26... OR circuit.
Claims (1)
を分離する第１の分離回路と、該第１の分離回路
により分離された再生同期信号と基準同期信号と
を比較する第１の比較回路と、該第１の比較回路
が出力する第１の誤差信号に対応して該記録媒体
を駆動するモータと、該再生信号をその時間軸を
補正して出力する補正回路と、該補正回路より出
力された該再生信号から該同期信号を分離する第
２の分離回路と、該第２の分離回路により分離さ
れた再生同期信号と該基準同期信号とを比較する
第２の比較回路と、該第２の比較回路が出力する
第２の誤差信号に対応して該補正回路の補正量を
制御する発振回路と、該第１の誤差信号のレベル
を検出する検出回路と、該検出回路の検出信号に
より制御され、該第２の誤差信号のループを開閉
するループスイツチとを備えることを特徴とする
時間軸誤差補正装置。 a first separation circuit that separates a synchronization signal from a reproduction signal reproduced from a recording medium; a first comparison circuit that compares the reproduction synchronization signal separated by the first separation circuit with a reference synchronization signal; a motor that drives the recording medium in response to a first error signal output by the first comparison circuit; a correction circuit that corrects the time axis of the reproduction signal and outputs the reproduced signal; a second separation circuit that separates the synchronization signal from the reproduction signal; a second comparison circuit that compares the reproduction synchronization signal separated by the second separation circuit with the reference synchronization signal; an oscillation circuit that controls a correction amount of the correction circuit in response to a second error signal output by the comparison circuit; a detection circuit that detects the level of the first error signal; and a control circuit that is controlled by the detection signal of the detection circuit. and a loop switch for opening and closing a loop of the second error signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9655086U JPH0633579Y2 (en) | 1986-06-23 | 1986-06-23 | Time axis error correction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9655086U JPH0633579Y2 (en) | 1986-06-23 | 1986-06-23 | Time axis error correction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS632262U true JPS632262U (en) | 1988-01-08 |
| JPH0633579Y2 JPH0633579Y2 (en) | 1994-08-31 |
Family
ID=30962408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9655086U Expired - Lifetime JPH0633579Y2 (en) | 1986-06-23 | 1986-06-23 | Time axis error correction device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0633579Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0256768A (en) * | 1988-08-20 | 1990-02-26 | Pioneer Electron Corp | Time base control device |
-
1986
- 1986-06-23 JP JP9655086U patent/JPH0633579Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0256768A (en) * | 1988-08-20 | 1990-02-26 | Pioneer Electron Corp | Time base control device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0633579Y2 (en) | 1994-08-31 |
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