JPS5731275A - Recorder and reproducer of video signal - Google Patents
Recorder and reproducer of video signalInfo
- Publication number
- JPS5731275A JPS5731275A JP10610780A JP10610780A JPS5731275A JP S5731275 A JPS5731275 A JP S5731275A JP 10610780 A JP10610780 A JP 10610780A JP 10610780 A JP10610780 A JP 10610780A JP S5731275 A JPS5731275 A JP S5731275A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- high band
- waveform
- video signal
- emphasizing
- 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
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
- H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N5/923—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback using preemphasis of the signal before modulation and deemphasis of the signal after demodulation
Abstract
PURPOSE:To obtain a signal having an improve S/N and a reduced distortion, by clipping or compressing the high band component of a video signal higher than a certain level and then pre-emphasizing and de-emphasizing the high band component for recording and reproducing respectively. CONSTITUTION:For a VTR, etc., the video signal of waveform (a) is applied through a terminal 10, and only the high band component higher than a certain level is extracted like a waveform (b) through a high band peak clipping circuit 21. Thus a signal (b) whose components higher than a certain level of + or -E is clipped is obtained. After this, a signal (d) whose high band component is emphasized is obtained through a pre-emphasizing circuit 1 and modulated by an FM modulator 3 to be recorded. This signal is demodulated by an FM demodulator 6 to obtain a waveform (d) during the reproduction. Then a signal of waveform (l) is reproduced through a terminal 11 and via a de-emphasizing circuit 7. In such way, the degree of emphasis is increased while reducing the occurrence of the screen distortion like the smears, streaking, etc. Thus a video signal is reproduced with an improved S/N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10610780A JPS5731275A (en) | 1980-07-31 | 1980-07-31 | Recorder and reproducer of video signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10610780A JPS5731275A (en) | 1980-07-31 | 1980-07-31 | Recorder and reproducer of video signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5731275A true JPS5731275A (en) | 1982-02-19 |
Family
ID=14425256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10610780A Pending JPS5731275A (en) | 1980-07-31 | 1980-07-31 | Recorder and reproducer of video signal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5731275A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6174107A (en) * | 1984-09-19 | 1986-04-16 | Victor Co Of Japan Ltd | Signal processing circuit |
| US5490316A (en) * | 1993-06-11 | 1996-02-13 | Sumitomo Wiring Systems Ltd (A Corp. Of Japan) | Continuous terminal crimping machine |
-
1980
- 1980-07-31 JP JP10610780A patent/JPS5731275A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6174107A (en) * | 1984-09-19 | 1986-04-16 | Victor Co Of Japan Ltd | Signal processing circuit |
| US5490316A (en) * | 1993-06-11 | 1996-02-13 | Sumitomo Wiring Systems Ltd (A Corp. Of Japan) | Continuous terminal crimping machine |
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