JPH0384957U - - Google Patents
Info
- Publication number
- JPH0384957U JPH0384957U JP14558189U JP14558189U JPH0384957U JP H0384957 U JPH0384957 U JP H0384957U JP 14558189 U JP14558189 U JP 14558189U JP 14558189 U JP14558189 U JP 14558189U JP H0384957 U JPH0384957 U JP H0384957U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- output
- reproducing
- analog
- clock
- 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.)
- Pending
Links
- 238000006243 chemical reaction Methods 0.000 claims 2
- 230000003111 delayed effect Effects 0.000 claims 1
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
Description
第１図は本考案に係る信号再生装置の一実施例
のブロツク図、第２図は該実施例の動作を説明す
るためのタイムチヤート、第３図は光磁気記録媒
体の記録形態の一例を示す図、第４図は上記実施
例の同期化クロツク発生回路回路の一例を示すブ
ロツク図である。
１……入力端子、２……Ａ−Ｄ変換器、３……
同期化クロツク発生回路、４……遅延回路、５…
…減算器、６……絶対値・極性検出回路、７……
比較器、８……閾値出力回路、９……極性連続検
出回路、１０ａ，１０ｂ……出力端子。
Fig. 1 is a block diagram of an embodiment of a signal reproducing device according to the present invention, Fig. 2 is a time chart for explaining the operation of the embodiment, and Fig. 3 is an example of a recording form of a magneto-optical recording medium. FIG. 4 is a block diagram showing an example of the synchronization clock generation circuit of the above embodiment. 1...Input terminal, 2...A-D converter, 3...
Synchronization clock generation circuit, 4...Delay circuit, 5...
...Subtractor, 6...Absolute value/polarity detection circuit, 7...
Comparator, 8... Threshold output circuit, 9... Polarity continuity detection circuit, 10a, 10b... Output terminal.
Claims (1)
する信号再生装置において、 上記記録媒体から同期化クロツク信号を再生す
るクロツク再生手段と、 上記クロツク再生手段からの同期化クロツク信
号により上記再生信号をアナログ−デジタル変換
するアナログ−デジタル変換手段と、 上記アナログ−デジタル変換手段からの出力信
号の１サンプル遅延出力間の差分を出力する差分
出力手段と、 上記差分出力手段からの出力が供給され、差分
出力信号の極性の連続を検出して再生制御信号を
出力する極性連続検出手段とを有することを特徴
とする信号再生装置。[Claims for Utility Model Registration] A signal reproducing device for detecting edges of a reproduced signal obtained from a recording medium, comprising: clock reproducing means for reproducing a synchronized clock signal from the recording medium; and synchronization from the clock reproducing means. Analog-to-digital conversion means for converting the reproduced signal from analog to digital using a clock signal; difference output means for outputting a difference between the one-sample delayed output of the output signal from the analog-to-digital conversion means; and from the difference output means. What is claimed is: 1. A signal reproducing apparatus comprising: a polarity continuity detecting means to which the output of the differential output signal is supplied, and detecting the continuity of polarity of the differential output signal and outputting a reproduction control signal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14558189U JPH0384957U (en) | 1989-12-18 | 1989-12-18 | |
| EP19900402365 EP0415834A3 (en) | 1989-08-31 | 1990-08-24 | Signal reproducing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14558189U JPH0384957U (en) | 1989-12-18 | 1989-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0384957U true JPH0384957U (en) | 1991-08-28 |
Family
ID=31692209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14558189U Pending JPH0384957U (en) | 1989-08-31 | 1989-12-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0384957U (en) |
-
1989
- 1989-12-18 JP JP14558189U patent/JPH0384957U/ja active Pending
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