Receiver provided with a frequency synthesizer capable of storin

Details Receiver provided with a frequency synthesizer capable of storin Receiver provided with a frequency synthesizer capable of storin

1981-07-16

1983-10-04

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455183, 455186, H04B 116

Patent

active

044083491

ABSTRACT:
A channel selector in a receiver such as a television receiver is provided with a key board input for channel selection and automatic and manual fine tuning. A read only memory stores frequency division ratio data for each selectable channel and reads out this data when a channel is selected. In the case where there is a large offset between the nominal broadcasting frequency and the actual broadcasting frequency, it will be necessary to modify the division ratio data by means of the manual tuning keys. A RAM stores the manual tuning information input via the keys so that manual tuning need be effected only once. Upon re-selection of the same channel, tuning of the previously manually set position is automatically effected.

REFERENCES:
patent: 4121162 (1978-10-01), Alberkrack et al.
patent: 4123724 (1978-10-01), Das et al.
patent: 4280140 (1981-07-01), Skerlos
patent: 4298989 (1981-11-01), Someno et al.
"A Microcomputer Controlled Frequency Synthesizer for TV" by Rzeszewski et al., 2/18/78.

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