JPS6415485U - - Google Patents
Info
- Publication number
- JPS6415485U JPS6415485U JP11056687U JP11056687U JPS6415485U JP S6415485 U JPS6415485 U JP S6415485U JP 11056687 U JP11056687 U JP 11056687U JP 11056687 U JP11056687 U JP 11056687U JP S6415485 U JPS6415485 U JP S6415485U
- Authority
- JP
- Japan
- Prior art keywords
- synchronization signal
- generation circuit
- generates
- gate pulse
- block
- 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
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Description
第１図はこの考案の一実施例による同期信号検
出回路を示すブロツク図、第２図は動作を示すタ
イムチヤート、第３図は録再データパターン、第
４図は従来の同期信号検出回路を示すブロツク図
、第５図は第４図の動作を示すタイムチヤートで
ある。
１１……ゲートパルス発生回路、１２……保護
ＳＹＮＣ信号発生回路、１３……ＡＮＤゲート、
１４……ＯＲゲート、１５……カウンタ。なお、
図中の同一符号は同一または相当部分を示す。
Fig. 1 is a block diagram showing a synchronization signal detection circuit according to an embodiment of this invention, Fig. 2 is a time chart showing the operation, Fig. 3 is a recording/reproduction data pattern, and Fig. 4 is a diagram showing a conventional synchronization signal detection circuit. The block diagram shown in FIG. 5 is a time chart showing the operation of FIG. 11... Gate pulse generation circuit, 12... Protection SYNC signal generation circuit, 13... AND gate,
14...OR gate, 15...counter. In addition,
The same reference numerals in the figures indicate the same or corresponding parts.
Claims (1)
ツクとしかつ複数ブロツクで１フレームを構成す
るデイジタルデータを再生する回転再生ヘツドの
切換信号を基準にしてブロツクゲートパルスを発
生するゲートパルス発生回路と、同じく上記のヘ
ツド切換信号を基準として保護同期信号を発生す
る保護同期信号発生回路とを備えたことを特徴と
する同期信号検出回路。 A gate pulse generation circuit that generates a block gate pulse based on a switching signal of a rotary reproduction head that reproduces digital data in which a synchronization signal and a plurality of pieces of data that follow it constitute one block, and one frame is composed of the plurality of blocks. A synchronization signal detection circuit comprising: a protection synchronization signal generation circuit that generates a protection synchronization signal based on the head switching signal described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987110566U JPH0735498Y2 (en) | 1987-07-16 | 1987-07-16 | Sync signal detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987110566U JPH0735498Y2 (en) | 1987-07-16 | 1987-07-16 | Sync signal detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6415485U true JPS6415485U (en) | 1989-01-26 |
| JPH0735498Y2 JPH0735498Y2 (en) | 1995-08-09 |
Family
ID=31347845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987110566U Expired - Lifetime JPH0735498Y2 (en) | 1987-07-16 | 1987-07-16 | Sync signal detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0735498Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57106284A (en) * | 1980-12-22 | 1982-07-02 | Sony Corp | Extracting circuit for synchronizing signal |
| JPS61171285A (en) * | 1985-01-25 | 1986-08-01 | Hitachi Ltd | Circuit for separating and correcting synchronizing information |
-
1987
- 1987-07-16 JP JP1987110566U patent/JPH0735498Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57106284A (en) * | 1980-12-22 | 1982-07-02 | Sony Corp | Extracting circuit for synchronizing signal |
| JPS61171285A (en) * | 1985-01-25 | 1986-08-01 | Hitachi Ltd | Circuit for separating and correcting synchronizing information |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0735498Y2 (en) | 1995-08-09 |
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