Muse-NTSC converter having two oscillators

Details Muse-NTSC converter having two oscillators Muse-NTSC converter having two oscillators

1994-08-23

1995-08-22

Kostak, Victor R.

Television

Format conversion

Changing number of lines for standard conversion

548443, 548457, H04N 701

Patent

active

054444950

ABSTRACT:
A MUSE-NTSC converter of a relatively simple and small scale circuit design. An oscillation signal from a 28.63636 MHz oscillator (20) is eight times as large as a subcarrier frequency fsc. A Y image processing circuit (17) and a chroma encoder (18) can perform various kinds of processing, such as dividing a frequency of the oscillation signal from the 28.63636 MHz oscillator (20) and the like, to produce a subcarrier frequency. A signal separating circuit (3') receives the oscillation signal from the 28.63636 MHz oscillator (20) as a single system clock and performs some kinds of signal processing which vary from a full wide mode to a zoom mode. Thus, in performing PLL on system clocks in the MUSE mode and the NTSC mode, there may be only one PLL circuit (21) for synchronizing an oscillation signal from a 32.4 MHz oscillator (19) and the oscillation signal from the 28.63636 MHz oscillator (20) in phase.

REFERENCES:
patent: 5031040 (1991-07-01), Maruyama
patent: 5159437 (1992-10-01), Lee
Japan Television Society Journal, vol. 45, No. 11, 1991, pp. 1374-1377, Yoshiki Mizutani, "5-2-3 Muse-NTSC Converter".

Affiliated with

Also associated with

Rating

Muse-NTSC converter having two oscillators does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Muse-NTSC converter having two oscillators, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Muse-NTSC converter having two oscillators will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2145486