Residential time reference system

Details Residential time reference system Residential time reference system

1991-07-16

1994-08-02

Peng, John K.

Communications: electrical

Continuously variable indicating

With meter reading

340310A, 340538, 348 8, 368 46, 455 63, H04M 1104, G04C 1100

Patent

active

053349750

ABSTRACT:
A method and provides for transmitting a time reference throughout a residence or other facility for use by appliances operating within the facility. A time reference is received from the headend of a cable television (CATV) system at the subscriber converter and is retransmitted to set the internal clock timers of residential appliances throughout the house. The time reference is received by the CATV converter, then encoded and modulated for transmission on the residential AC wiring system which also carries AC power to all of the appliances in the house. Individual appliances receive the encoded time reference from the AC power line, demodulate the received signal and use the received time reference to set its internal clock timer. In such manner, a residential appliance does not need to have its internal clock set by the consumer.

REFERENCES:
patent: 4177454 (1979-12-01), Shinoda et al.
patent: 4386436 (1983-05-01), Kocher et al.
patent: 4442319 (1984-04-01), Treidl
patent: 4899129 (1990-02-01), MacFadyen et al.
patent: 4918720 (1990-04-01), Buehl
patent: 4994908 (1991-02-01), Kuban et al.

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