Method for producing NTSC compatible signal for widescreen tv sy

Details Method for producing NTSC compatible signal for widescreen tv sy Method for producing NTSC compatible signal for widescreen tv sy

1988-11-03

1990-07-31

Chin, Tommy P.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 16, 358142, H04N 708, H04N 1106

Patent

active

049454021

ABSTRACT:
A method for producing an NTSC compatible television signal for a widescreen television system having a widescreen panel includes deriving a luminance signal of a central portion of the widescreen panel, deriving a color signal modulated in response to the luminance signal according to the NTSC system, deriving a time-expanded signal from luminance signals of two sides of the widescreen panel modulating a sub-carrier so that a scanning line of identical phase drops down for each field, and deriving a time-expanded color signal from color signal of the two sides of the widescreen panel modulating the sub-carrier and having a phase which is the same in every scanning line in a field and which is inverse with response to the phase for the adjacent fields and having a horizontal frequency of the time-expanded luminance signal. The luminance signal, color signal, time-expanded luminance signal and time-expanded color signal are multiplexed so as to enable production of the NTSC compatible television signal.

REFERENCES:
patent: 4581640 (1986-04-01), Cole
patent: 4660072 (1987-04-01), Fukinuki
patent: 4745460 (1988-05-01), Fukinuki
A Single Channel, NTSC Compatible Widescreen EDTV System, by Isnardi et al., pp. 1 to 5.

Affiliated with

Also associated with

Rating

Method for producing NTSC compatible signal for widescreen tv sy does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing NTSC compatible signal for widescreen tv sy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing NTSC compatible signal for widescreen tv sy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1401874