Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1980-04-29
1981-07-28
Murray, Richard
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
455185, 455343, H04N 544
Patent
active
042813492
ABSTRACT:
A tuning system of a television receiver includes a non-volatile memory for storing tuning information. Control apparatus allows memory locations of the memory to be selectively programmed during a set-up procedure for tuning respective channels and thereafter to be selectively interrogated during channel selection. A power supply for providing a supply voltage for the memory includes apparatus for maintaining the magnitude of the supply voltage at a relatively low level when the receiver is on but the tuning system is dormant, and for increasing the magnitude of the supply voltage to a change-enabling level for a predetermined time after the operation of switches for enabling the memory to be programmed during set-up and interrogated during channel selection.
REFERENCES:
patent: 3974452 (1976-08-01), Cunningham
patent: 4137502 (1979-01-01), Maddaloni
patent: 4181891 (1980-01-01), Skerlos
"On Powering Down," Electronics, p. 131, Apr. 26, 1979.
"Intel Component Data Catalog," 1978, pp. 4-51 to 4-54.
"Power Switching CKTS Cut PROM Power," EDN Magazine 5-20-80, pp. 127-130.
"Mostek 1979 Memory Data Book," pp. 171-175.
"Intel Data Sheet," pp. 3-138 to 3-143, Intel Component Data Catalog, 1978.
Emanuel Peter M.
Murray Richard
Rasmussen Paul J.
RCA Corporation
Whitacre Eugene M.
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