Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1985-09-27
1987-06-23
Groody, James J.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358320, 358339, 360 362, H04N 9455, H04N 989, H04N 595
Patent
active
046757244
ABSTRACT:
In a time base correction system, a composite color television analog signal derived from a prerecorded tape is converted by an analog-to-digital (A/D) converter to a digital signal having horizontal sync and color burst signal components. The digitized sync and burst signals are processed on a line-by-line basis to provide an error signal between input video and a sampling clock in the form of a binary control word. The error signal is applied to a digital frequency synthesizer which generates a clock at the subcarrier frequency to achieve precise adjustment of frequency and phase of the A/D sampling clock with respect to the video signal. An analog phase locked loop operating at four times the subcarrier frequency feeds back a 4.times. subcarrier sampling clock to the analog-to-digital converter with adjustable frequency and phase.
REFERENCES:
patent: 3578902 (1971-05-01), Monsay
patent: 3860952 (1975-01-01), Tallent et al.
patent: 4015288 (1977-03-01), Ebihara et al.
patent: 4018990 (1977-04-01), Long et al.
patent: 4069499 (1978-01-01), Ninomiya
patent: 4081826 (1978-03-01), Ninomiya
patent: 4107736 (1978-08-01), Lowry et al.
patent: 4109276 (1978-08-01), Hopkins, Jr. et al.
patent: 4119999 (1978-10-01), Gallo
patent: 4120000 (1978-10-01), Ninomiya
patent: 4165524 (1979-08-01), Ninomiya
patent: 4212027 (1980-07-01), Lemoine
patent: 4249198 (1981-02-01), Ito et al.
patent: 4291332 (1981-09-01), Kato et al.
patent: 4373168 (1983-02-01), Mizakami et al.
patent: 4404531 (1983-09-01), Genrich et al.
patent: 4443821 (1984-04-01), Kato
patent: 4463371 (1984-07-01), Lewis, Jr.
patent: 4527145 (1985-07-01), Haussman et al.
patent: 4555734 (1985-11-01), Fukui
patent: 4563657 (1986-01-01), Qureshi et al.
patent: 4612568 (1986-09-01), den Hollander et al.
patent: 4633298 (1986-12-01), Steckler et al.
Operator's Manual for the Model DPS-1 Digital Processing System manufactured by Digital Video Systems, John D. Lowry, no date.
Almeida George B.
Ampex Corporation
Bauer Robert M.
Groody James J.
Kallman Nathan N.
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