Television – Synchronization – Automatic phase or frequency control
Reexamination Certificate
2006-03-21
2006-03-21
Natnael, Paulos M. (Department: 2614)
Television
Synchronization
Automatic phase or frequency control
Reexamination Certificate
active
07015973
ABSTRACT:
A method and an apparatus for generating a coast signal for enabling or disabling a phase comparator in a phase-locked loop of image processing apparatus. The phase-locked loop generates a sampling clock signal, which is used to convert an analog image signal into a digital image signal in response to a composite sync signal including a vertical sync signal and a horizontal sync signal. An enabled coast signal is generated at period other than detected horizontal sync period to prevent the phase comparator from comparing the composite synce signal to a reference signal, and a disabled coast is generated at periods corresponding to the horizontal sync period to permit the phase comparator to compare the composite synce signal to the reference signal.
REFERENCES:
patent: 4253116 (1981-02-01), Rodgers, III
patent: 4809068 (1989-02-01), Nagai
patent: 4885554 (1989-12-01), Wimmer
patent: 5019907 (1991-05-01), Murakoshi et al.
patent: 5502711 (1996-03-01), Clark et al.
patent: 5543743 (1996-08-01), Cooper
patent: 5617137 (1997-04-01), Whitlow
patent: 5663688 (1997-09-01), Delmas et al.
patent: 5790200 (1998-08-01), Tsujimoto et al.
patent: 5874846 (1999-02-01), Lee
patent: 5990656 (1999-11-01), Kardash
patent: 6211920 (2001-04-01), Cirot et al.
patent: 6222590 (2001-04-01), Makino
Bushnell , Esq. Robert E.
Natnael Paulos M.
Samsung Electronics Co. LTD
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