TW343418B - Digital color encoder capable of reducing beat noise on TV screen - Google Patents

Digital color encoder capable of reducing beat noise on TV screen

Info

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
Application number
TW086102807A
Other languages
Chinese (zh)
Inventor
Takuo Mukai
Original Assignee
Ricoh Kk
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ricoh Kk filed Critical Ricoh Kk
Application granted granted Critical
Publication of TW343418B publication Critical patent/TW343418B/en

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.
TW086102807A 1996-03-07 1997-03-07 Digital color encoder capable of reducing beat noise on TV screen TW343418B (en)

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)

Also Published As

Publication number Publication date
JPH09247702A (en) 1997-09-19

Similar Documents

Publication Publication Date Title
ES8407633A1 (en) Digital television receiver with analog-to-digital converter having time multiplexed gain
KR920704525A (en) Device for transmitting auxiliary information on TV signal
EP0346700A3 (en) Cable television descrambler
JPS54132123A (en) Special effect device for television video signal
CA2035794A1 (en) Apparatus for carrying out y/c separation
AU533980B2 (en) Decoding composite pal television signals
CA2113755A1 (en) Television Signal Digitizing Method
TW343418B (en) Digital color encoder capable of reducing beat noise on TV screen
EP0353883A3 (en) Digitization of video signals
AU5797790A (en) Television system for digital transmission of picture signals
ES8800539A1 (en) Digitising television signals.
SE8103248L (en) KROMINANSOMKODARE
CA2364345A1 (en) An upconverter for a television signal headend distribution center handling analog and digital signals and method of making and using the same
EP0334351A3 (en) Video signal processing circuit and an insertion circuit utilized therein
EP0329976A3 (en) Multiple analogous component tv system
JPS57140092A (en) Speed error detecting signal system
BR8906476A (en) ENCODER AND DECODER FOR CONVERTING TELEVISION SIGNAL
JPS55141879A (en) Transmission system of color television signal
RU2158061C1 (en) Device for digital decoding of color tv signal, which is compressed using digital methods
JPS5398727A (en) Interpolation reproducing system for video signal
JPS5765070A (en) Television receiver
JPS53109424A (en) Signal processing system for color television
JPS54121021A (en) Secam signal recording system
JPS6425685A (en) Transmission method for high-definition television signal
KR920700513A (en) Broadband Synthesis TV System

Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees