Auto tuning receiver with a tuning information memory

Details Auto tuning receiver with a tuning information memory Auto tuning receiver with a tuning information memory

1982-06-23

1985-04-02

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455165, 455184, 455186, H03J 718

Patent

active

045092036

ABSTRACT:
An auto tuning/storing receiver includes a PLL frequency synthesizer for scanning of frequency. The receiver is provided with means storing field intensity signals characteristic of the intensities of broadcasts at the same time as tuning signals characteristics of tuning frequencies are stored. Once the storing means has been full of the tuning signals during the scanning of frequencies, comparison is effected in field intensity between a new broadcast and all of the already stored broadcasts whenever the field intensity of the new one exceeds the reference or the storing criterion. Should the field intensity of the new one be higher than the lowest field intensity of one of the already stored broadcasts, the new broadcast (both its related tuning signal and field intensity signal) replaces the most feeble of the previous broadcasts automatically. An alternative way is to remove the tuning signal and field intensity signal concerning the latter broadcast (most feeble) and access and shift on one-by-one basis for storage of the information which follows regarding the next succeeding or remaining broadcasts when the former (new) broadcast is higher in field intensity than the latter broadcast.

REFERENCES:
patent: 3983492 (1976-09-01), Fisher et al.
patent: 4285066 (1981-08-01), Van Deursen
patent: 4355414 (1982-10-01), Inoue
patent: 4387469 (1983-06-01), Miyazaki et al.

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