JPS5463612A - Vertical synchronous circuit of television image receiver - Google Patents
Vertical synchronous circuit of television image receiverInfo
- Publication number
- JPS5463612A JPS5463612A JP12975077A JP12975077A JPS5463612A JP S5463612 A JPS5463612 A JP S5463612A JP 12975077 A JP12975077 A JP 12975077A JP 12975077 A JP12975077 A JP 12975077A JP S5463612 A JPS5463612 A JP S5463612A
- Authority
- JP
- Japan
- Prior art keywords
- signals
- level
- vertical synchronizing
- pulse
- video signals
- 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
- Synchronizing For Television (AREA)
Abstract
PURPOSE: To obtain a sufficiently large vertical synchronizing signal pulse to prevent the step-out dependent upon ghost signals by detecting signals, which are subjected to synchronizaton separation, and extracting pulses which compensate lowering components of a level.
CONSTITUTION: Synchronizing signals are separated from composite video signals including horizontal and vertical synchronizing signals and video signals in 13, and separated synchronizing signal pulses are amplified in 14, and a part of the amplified output is supplied to peak detector circuit 32. Then, in case that the level of vertical synchronizing signals in composite video signals is lowered, a pulse which is synchronized with the level-lowered signal is obtained to extract a pulse, which compensates lowering components of the level, from inversional amplifier circuit 33, so that a sufficiently large vertical synchronizing signal pulse can be obtained.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12975077A JPS5463612A (en) | 1977-10-31 | 1977-10-31 | Vertical synchronous circuit of television image receiver |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12975077A JPS5463612A (en) | 1977-10-31 | 1977-10-31 | Vertical synchronous circuit of television image receiver |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5463612A true JPS5463612A (en) | 1979-05-22 |
Family
ID=15017266
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12975077A Pending JPS5463612A (en) | 1977-10-31 | 1977-10-31 | Vertical synchronous circuit of television image receiver |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5463612A (en) |
-
1977
- 1977-10-31 JP JP12975077A patent/JPS5463612A/en active Pending
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