JPS6289879U - - Google Patents
Info
- Publication number
- JPS6289879U JPS6289879U JP18019185U JP18019185U JPS6289879U JP S6289879 U JPS6289879 U JP S6289879U JP 18019185 U JP18019185 U JP 18019185U JP 18019185 U JP18019185 U JP 18019185U JP S6289879 U JPS6289879 U JP S6289879U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- performs
- write
- compression circuit
- synchronization
- 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
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000010355 oscillation Effects 0.000 description 1
Landscapes
- Television Signal Processing For Recording (AREA)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Description
第１図は本考案の一実施例を示す図である。第
２図は時間軸圧縮回路の他の例を示す図、第３図
はその動作説明図である。第４図は磁気デイスク
の図、第５図はノンインタレース再生装置の図、
第６図は他のノンインタレース再生装置の図であ
る。
１０……磁気デイスク、１１，１２……トラツ
ク、１３，１４……ヘツド（第１第２ヘツド）、
３２，３４……第１第２時間軸圧縮回路、６４…
…書き込みアドレスカウンタ（第１書き込み回路
）、６６……書き込みアドレスカウンタ（第２書
き込み回路）、７６……固定周波数発振回路、７
８……読み出しアドレスカウンタ（読み出し回路
）。
FIG. 1 is a diagram showing an embodiment of the present invention. FIG. 2 is a diagram showing another example of the time base compression circuit, and FIG. 3 is an explanatory diagram of its operation. Figure 4 is a diagram of a magnetic disk, Figure 5 is a diagram of a non-interlaced playback device,
FIG. 6 is a diagram of another non-interlaced playback device. 10... Magnetic disk, 11, 12... Track, 13, 14... Head (first and second head),
32, 34...first and second time axis compression circuit, 64...
...Write address counter (first write circuit), 66...Write address counter (second write circuit), 76...Fixed frequency oscillation circuit, 7
8...Read address counter (read circuit).
Claims (1)
信号が同心円の２つのトラツクに各々１フイール
ドずつ記録された磁気デイスクの再生装置に於い
て、 前記２つのトラツクに記録された映像信号を各
々同時に再生する第１第２ヘツドと、 前記第１第２ヘツドからの再生映像信号を少な
くとも１水平走査期間書き込み、約２倍の速さで
これを読み出す第１第２時間軸圧縮回路と、 前記第１ヘツドからの再生映像信号の水平同期
成分に同期して、前記第１時間軸圧縮回路の書き
込み動作を行う第１書き込み回路と、 前記第２ヘツドからの再生映像信号の水平同期
成分に同期して、前記第２時間軸圧縮回路の書き
込み動作を行う第２書き込み回路と、 固定周波数発振回路により作成したノンインタ
レース信号の水平同期成分に同期して前記第１第
２時間軸圧縮回路の読み出し動作を行う読み出し
回路とを、 備えることを特徴とするノンインタレース再生回
路。[Claims for Utility Model Registration] In a magnetic disk reproducing device in which a video signal for one frame consisting of two fields is recorded on two concentric tracks, one field each, the video signal is recorded on the two tracks. a first and second head for simultaneously reproducing video signals from the first and second heads; and a first and second time axis for writing the reproduced video signals from the first and second heads for at least one horizontal scanning period and reading them at about twice the speed. a compression circuit; a first write circuit that performs a write operation of the first time-base compression circuit in synchronization with a horizontal synchronization component of the reproduced video signal from the first head; a second write circuit that performs a write operation of the second time base compression circuit in synchronization with a horizontal synchronization component; and a second write circuit that performs a write operation of the second time base compression circuit in synchronization with a horizontal synchronization component; A non-interlaced playback circuit comprising: a readout circuit that performs a readout operation of a time axis compression circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18019185U JPS6289879U (en) | 1985-11-22 | 1985-11-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18019185U JPS6289879U (en) | 1985-11-22 | 1985-11-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6289879U true JPS6289879U (en) | 1987-06-09 |
Family
ID=31123922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18019185U Pending JPS6289879U (en) | 1985-11-22 | 1985-11-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6289879U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59174077A (en) * | 1983-03-24 | 1984-10-02 | Hitachi Ltd | Reproducing device |
| JPS59186485A (en) * | 1983-04-08 | 1984-10-23 | Sony Corp | Time-axis correcting device |
| JPS59194585A (en) * | 1983-04-19 | 1984-11-05 | Canon Inc | Time base converting device of video signal |
-
1985
- 1985-11-22 JP JP18019185U patent/JPS6289879U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59174077A (en) * | 1983-03-24 | 1984-10-02 | Hitachi Ltd | Reproducing device |
| JPS59186485A (en) * | 1983-04-08 | 1984-10-23 | Sony Corp | Time-axis correcting device |
| JPS59194585A (en) * | 1983-04-19 | 1984-11-05 | Canon Inc | Time base converting device of video signal |
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