H - Electricity – 04 – N
Patent
H - Electricity
04
N
352/18, 350/38
H04N 5/782 (2006.01) H04N 9/81 (2006.01) H04N 9/86 (2006.01)
Patent
CA 1124835
ABSTRACT In order to enable high recording densities of SECAM (Registered Trade Mark) color video signals in a plurality of adjacent tracks in a record medium while avoiding chrominance component cross-talk, prior to recording the chrominance components are processed so that chrominance components in ad- jacent tracks are in frequency interleaving relationship with one another so that cross-talk can be eliminated by means of a comb filter. This is done by frequency converting the chromin- ance components with a frequency converting signal generated by an oscillator section and which changes in frequency in a pre- determined sequence. The sequential chrominance subcarrier phase shifts inherent in a SECAM signal are simultaneously cancelled by means of a circuit in this connection an injection locked oscillator is provided with an output from a phase modu- lator which is used to frequency shift one of the chrominance subcarriers so that the oscillator can be injection locked to both chrominance subcarriers. In a second embodiment, the chrominance signals are interleaved by frequency conversion using a single frequency, phase modulated signal.
316438
Numakura Toshihiko
Yamagiwa Kazuo
Gowling Lafleur Henderson Llp
Sony Corporation
LandOfFree
Secam recording and reproducing system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Secam recording and reproducing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Secam recording and reproducing system will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-348833