Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1976-09-07
1979-06-26
Bookbinder, Marc E.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
325421, 325423, 325464, 325470, 358195, H04B 134, H04N 544
Patent
active
041594878
ABSTRACT:
An automatic TV tuner circuit responsive to a tuning voltage for tuning over a desired frequency reception range. The tuning voltage is generated by a staircase voltage generator. A discriminator produces an output signal having a nominal value when the receiver is tuned to a transmitted broadcast frequency and at a discriminator output having a predetermined difference from the nominal value, a sequence control circuit halts the operation of the staircase generator and regulates the tuning voltage in a continuous manner under control of the discriminator output signal to complete the tuning process.
REFERENCES:
patent: 3189829 (1965-06-01), Bento et al.
patent: 3293572 (1966-12-01), Smith
patent: 3487311 (1969-12-01), Luhowy
patent: 3671870 (1972-06-01), Wellhausen
patent: 3686574 (1972-08-01), Niman
patent: 3825838 (1974-07-01), Mayle
patent: 3936753 (1976-02-01), Clark
patent: 4123716 (1978-10-01), Borg
Elshuber Karl
Gotz Laszlo
Tonn Hans
Bookbinder Marc E.
Comfort Jim
Merrett Rhys
Sharp Mel
Texas Instruments Deutschland GmbH
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