JPS5463743A - Synchronous reproducer of recorder-reproducer - Google Patents
Synchronous reproducer of recorder-reproducerInfo
- Publication number
- JPS5463743A JPS5463743A JP12961777A JP12961777A JPS5463743A JP S5463743 A JPS5463743 A JP S5463743A JP 12961777 A JP12961777 A JP 12961777A JP 12961777 A JP12961777 A JP 12961777A JP S5463743 A JPS5463743 A JP S5463743A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- signal
- synchronous
- synchronizing signal
- gate
- 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
Landscapes
- Television Signal Processing For Recording (AREA)
Abstract
PURPOSE: To stabilize reproduced images by a tape reverse reciprocation system by continuously generating the signal synchronous to the horizontal synchronizing signal by a phase locked loop even in the blanking period at the reversing of tape running.
CONSTITUTION: When the horizontal synchronizing signal separated from the video signal having gone through a gate 8 which is held open without being applied with a gate signal is applied to a sample holding circuit 9, the circuit 11 of the phase locked loop formed by a delay circuit 12 for feedback, trapezoidal wave generating circuit 13, circuit 9, time constant circuit 10 and synchronous lagic circuit 11 generates the synchronizing signal of the synchronous in-phase to the horizontal synchronizing signal. At the reversing of the tape, the horizontal synchronizing signal is eliminated by this phase locked loop. Even after the gate 8 is closed by the gate signal, the synchronizing signal is applied to a synchronous insertion circuit 16 where it is mixed with the blanking signal in which the noise being outputted by a blanking circuit 15 has been made to a specified constant level according to the gate signal. This mixed signal is then outputted from the circuit 16. Hence, the reproduced images at the reversing and reciprocating continue and stabilize.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12961777A JPS5463743A (en) | 1977-10-31 | 1977-10-31 | Synchronous reproducer of recorder-reproducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12961777A JPS5463743A (en) | 1977-10-31 | 1977-10-31 | Synchronous reproducer of recorder-reproducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5463743A true JPS5463743A (en) | 1979-05-22 |
Family
ID=15013887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12961777A Pending JPS5463743A (en) | 1977-10-31 | 1977-10-31 | Synchronous reproducer of recorder-reproducer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5463743A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57501059A (en) * | 1980-07-28 | 1982-06-10 | ||
| JPS59137678U (en) * | 1983-03-01 | 1984-09-13 | 三洋電機株式会社 | Image file playback circuit |
| JPS6177481A (en) * | 1984-09-25 | 1986-04-21 | Pioneer Electronic Corp | Disk scanner |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50119607A (en) * | 1974-02-19 | 1975-09-19 |
-
1977
- 1977-10-31 JP JP12961777A patent/JPS5463743A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50119607A (en) * | 1974-02-19 | 1975-09-19 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57501059A (en) * | 1980-07-28 | 1982-06-10 | ||
| JPS59137678U (en) * | 1983-03-01 | 1984-09-13 | 三洋電機株式会社 | Image file playback circuit |
| JPS6177481A (en) * | 1984-09-25 | 1986-04-21 | Pioneer Electronic Corp | Disk scanner |
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