H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/36
H04N 7/01 (2006.01) H04N 7/015 (2006.01) H04N 11/20 (2006.01)
Patent
CA 2023676
(1) Abstract of the Disclosure A high-definition signal, which is band-compressed by an offset sub-sampling circulating in n=4 fields, is supplied to a simple MUSE processor from an input terminal. The simple MUSE processor generates a simple high-definition television signal is generated by super- imposing fields which are fewer than n=4 fields. A scanning line processor converts said simple high- definition television signal into an interlaced scanning signal with a number of scanning lines which are smaller than that of the television signal of the present sys- tem. The television signal, which is output from the scanning line processor, is converted into an analog signal by a digital-analog converter. Two color differ- ence signals, which are obtained by the digital-analog converter, are input to a quadrature modulator. The sub-carrier used in the quadrature modulator is gener- ated as follows a clock, which is synchronized with the sampling pulse of the high-definition television signal, is obtained from a synch regenerator. The clock, which is obtained from the synch regenerator, is input to a phase-locked loop circuit. The phase synch loop circuit generates the color sub-carrier, which is phase- synchronized with the clock, and supplies the color subcarrier to the quadrature modulator. Therefore, according to the above-mentioned system, the field fre- quency of the input television signal can be set to (2) invert every frame as the field frequency of the input television signal is maintained. Also, the frequency of the color sub-carrier can be set to be in a frequency draw-in range of a color processor of NTSC system.
Kabushiki Kaisha Toshiba
Marks & Clerk
LandOfFree
Television system converter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Television system converter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Television system converter will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1829996