Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1979-01-31
1980-11-25
Konick, Bernard
Facsimile and static presentation processing
Static presentation processing
Attribute control
H04N 5795
Patent
active
042361737
ABSTRACT:
An apparatus for reading a disc-shaped record carrier on which per track circumference one picture of a color television signal is recorded. The signal being read is converted to a standard PAL color television signal. The apparatus comprising a command device which by applying command signals to control means can produce a jumpwise radial change in the scanning position on the record carrier, so as to enable the scanning sequence of the recorded pictures to be changed. In order to maintain a standard PAL color television signal in the case of a changed scanning sequence, the apparatus comprises a correction device for the chrominance signal. This correction device is controlled by the command device and comprises a mixing circuit for mixing the chrominance signal with a reference signal of twice the chrominance subcarrier frequency during time intervals prescribed by the command device, and phase correction means for introducing a phase shift of 0.degree., 90.degree., 180.degree., or 270.degree. in the chrominance signal in accordance with a pattern defined by the command device.
REFERENCES:
patent: Re29963 (1979-04-01), Janssen
patent: 3854015 (1974-12-01), Janssen
patent: 4057827 (1977-11-01), Hoogendijk
patent: 4057832 (1977-11-01), Kappert
patent: 4090218 (1978-05-01), van Buul et al.
Bierhoff Martinus P. M.
Hoogendijk Adrianus H.
Briody Thomas A.
Cohen Simon L.
Konick Bernard
McElheny Jr. Donald
Streeter William J.
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