Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1983-02-28
1986-07-22
Buczinski, Stephen C.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358114, 358123, H04N 7167, H04N 716
Patent
active
046022848
ABSTRACT:
An STV system commonly transmits scrambled television signals which include encoded data reflecting subscriber address, authorization and program code information. In some STV systems the subscriber installation characteristically comprises a non-addressable converter for converting a transmitted RF signal to an output signal having the frequency of standard VHF television signal. The invention is addressed to an addressable adapter which responds to the output signal of the converter to render the subscriber installation addressable. To this end, the adapter comprises tuning means, data retrieval means and an addressable data processor for deriving, among other information, a decode enable signal. The decode enable signal is instrumental in deriving an unscrambled television signal from the converter output signal.
REFERENCES:
patent: 4296391 (1981-10-01), Hazama et al.
patent: 4316220 (1982-02-01), Muterspaugh et al.
patent: 4460922 (1984-07-01), Ensinger et al.
Kelly Gordon E.
Nakanishi Mutsuo
Buczinski Stephen C.
O'Connor Cornelius J.
Wallace Linda J.
Zenith Electronics Corporation
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