TW343418B - Digital color encoder capable of reducing beat noise on TV screen - Google Patents
Digital color encoder capable of reducing beat noise on TV screenInfo
- Publication number
- TW343418B TW343418B TW086102807A TW86102807A TW343418B TW 343418 B TW343418 B TW 343418B TW 086102807 A TW086102807 A TW 086102807A TW 86102807 A TW86102807 A TW 86102807A TW 343418 B TW343418 B TW 343418B
- Authority
- TW
- Taiwan
- Prior art keywords
- signal
- signals
- color
- generating
- modulation
- Prior art date
Links
Abstract
A digital color encoder using first and second color difference signals to form a digital signal used as the sample as a predetermined sampling frequency, and generating a composite video signal corresponding to a predetermined color television broadcasting system from three video signals corresponding to the three basic colors of light; in which the digital color encoder comprises: color subcarrier signal generating means for generating two color subcarrier signals separately having a predetermined frequency determined according to the color television broadcasting system, and having a phase difference of 90° therebetween, to be used as the digital signal of sampling at a sampling frequency; modulation means for generating first and second modulation waveform signals thereby carrying out a balancing modulation on the two color subcarrier signals by using the first and second color difference signals; noise signal generating means for generating random noise signals; and signal combining means for summing the first modulation signal, the second modulation signal and the noise signals, and quantizing the summed signal, thereby generating a digital signal having a predetermined word length to be used as the chrominance signal.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5001696A JPH09247702A (en) | 1996-03-07 | 1996-03-07 | Digital color encoder |
Publications (1)
Publication Number | Publication Date |
---|---|
TW343418B true TW343418B (en) | 1998-10-21 |
Family
ID=12847212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW086102807A TW343418B (en) | 1996-03-07 | 1997-03-07 | Digital color encoder capable of reducing beat noise on TV screen |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPH09247702A (en) |
TW (1) | TW343418B (en) |
-
1996
- 1996-03-07 JP JP5001696A patent/JPH09247702A/en active Pending
-
1997
- 1997-03-07 TW TW086102807A patent/TW343418B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JPH09247702A (en) | 1997-09-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |