JPS5574278A - Transmission unit of digital video signal - Google Patents
Transmission unit of digital video signalInfo
- Publication number
- JPS5574278A JPS5574278A JP14833978A JP14833978A JPS5574278A JP S5574278 A JPS5574278 A JP S5574278A JP 14833978 A JP14833978 A JP 14833978A JP 14833978 A JP14833978 A JP 14833978A JP S5574278 A JPS5574278 A JP S5574278A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- series
- video signal
- digital video
- digital
- 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
Landscapes
- Television Signal Processing For Recording (AREA)
- Color Television Systems (AREA)
- Dc Digital Transmission (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
PURPOSE: To reduce the DC component of digital signal, by obtaining the exclusive logical sum of the digital signal having horizontal or vertical phase distance with the virtual random series and the series inverting it, in transmitting the digital signal formed with video signal in PCM modulation.
CONSTITUTION: The virtual random series produced at the shift register 2, e.g., M series MS and the series inverted MS inverted at the inverter 4 are fed to the selection circuit 5. The selection circuit 5 is selected every 1H and this output is fed to the exclusive OR gate 8 together with the signal at the digital video signal input terminal 1, being the transmission output. Since the two digital video signal and the virtual random signal having strong vertical or horizontal corelativity is given to the gate 8, even if the elimination of the low frequency component to one signal is insufficient, it is sufficient to another, and the elimination of low frequency component is ensured much.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14833978A JPS5574278A (en) | 1978-11-30 | 1978-11-30 | Transmission unit of digital video signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14833978A JPS5574278A (en) | 1978-11-30 | 1978-11-30 | Transmission unit of digital video signal |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5574278A true JPS5574278A (en) | 1980-06-04 |
JPS6238908B2 JPS6238908B2 (en) | 1987-08-20 |
Family
ID=15450550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14833978A Granted JPS5574278A (en) | 1978-11-30 | 1978-11-30 | Transmission unit of digital video signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5574278A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5970176A (en) * | 1982-10-14 | 1984-04-20 | Takahashi Yoshiteru | Dc linear motor with encoder |
-
1978
- 1978-11-30 JP JP14833978A patent/JPS5574278A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5970176A (en) * | 1982-10-14 | 1984-04-20 | Takahashi Yoshiteru | Dc linear motor with encoder |
Also Published As
Publication number | Publication date |
---|---|
JPS6238908B2 (en) | 1987-08-20 |
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