Digital chrominance signal demodulating device

Details Digital chrominance signal demodulating device Digital chrominance signal demodulating device

1995-05-18

1997-08-05

Lee, Michael H.

Television

Image signal processing circuitry specific to television

Chrominance signal demodulator

348641, 348726, 348507, H04N 945, H04N 966

Patent

active

056547676

ABSTRACT:
In a digital chrominance signal demodulating device receiving a carrier chrominance signal obtained by digitizing an analog composite video signal, a frequency component near the horizontal frequency of the color subcarrier is extracted, and color-difference signals are output. An identifying circuit forms a selection signal for identifying one of the color-difference signals contained in the carrier chrominance signal, within a color burst signal period, on the basis of a system clock and a horizontal sync signal. A selecting circuit selects the color-difference signals on the basis of the selection signal. The color-difference signals obtained by sampling in accordance with the system clock are kept in phase with the color burst signal. Accordingly, the digital chrominance signal can be demodulated by the use of less expensive digital circuits.

REFERENCES:
patent: 3591707 (1971-07-01), Abbott
patent: 4333104 (1982-06-01), Geller
patent: 4933749 (1990-06-01), Van Lammeren et al.
patent: 5396294 (1995-03-01), Fujii et al.
patent: 5459524 (1995-10-01), Cooper

Affiliated with

Also associated with

Rating

Digital chrominance signal demodulating device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Digital chrominance signal demodulating device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital chrominance signal demodulating device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1078381