JPS561679A - Detecting system for inversion phenomenon - Google Patents
Detecting system for inversion phenomenonInfo
- Publication number
- JPS561679A JPS561679A JP7778179A JP7778179A JPS561679A JP S561679 A JPS561679 A JP S561679A JP 7778179 A JP7778179 A JP 7778179A JP 7778179 A JP7778179 A JP 7778179A JP S561679 A JPS561679 A JP S561679A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- pulse
- inversion phenomenon
- detection
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/91—Television signal processing therefor
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Television Signal Processing For Recording (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
PURPOSE:To facilitate the detection for the inversion phenomenon, by inserting the pulse shaped detection pulse which occurs the inversion phenomenon most easily into the vertical blanking period and then detecting whether the inversion phenomenon occurs to the detection pulse or not. CONSTITUTION:The video signal supplied from input terminal 1 is applied to synchronous isolating circuit 2 and pre-emphasis circuit 3, and the horizontal synchronous signal isolated through circuit 2 is applied to detection pulse generating circuit 4. Thus the rectangular wave type detection pulse, which changes suddenly into the white level from the black level, is generated. On the other hand, the vertical synchronous signal isolated through circuit 2 is applied to gate pulse generating circuit 5 to produce the gate pulse of the horizontal scanning period within the vertical blanking period. This gate pulse is applied to gate circuit 6 to give gating just for the two horizontal scanning periods, and then applied to adder circuit 8 via pre-emphasis circuit 7 to be then applied to the memory system via FM modulator 9. Thus the detection can be facilitated for the inversion phenomenon of the memory system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7778179A JPS561679A (en) | 1979-06-20 | 1979-06-20 | Detecting system for inversion phenomenon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7778179A JPS561679A (en) | 1979-06-20 | 1979-06-20 | Detecting system for inversion phenomenon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS561679A true JPS561679A (en) | 1981-01-09 |
| JPS6252992B2 JPS6252992B2 (en) | 1987-11-09 |
Family
ID=13643502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7778179A Granted JPS561679A (en) | 1979-06-20 | 1979-06-20 | Detecting system for inversion phenomenon |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS561679A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01151682U (en) * | 1988-04-12 | 1989-10-19 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6477153A (en) * | 1987-09-18 | 1989-03-23 | Mitsubishi Electric Corp | Power module |
| JPH02122592U (en) * | 1989-03-17 | 1990-10-08 |
-
1979
- 1979-06-20 JP JP7778179A patent/JPS561679A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01151682U (en) * | 1988-04-12 | 1989-10-19 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6252992B2 (en) | 1987-11-09 |
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