Cordless telephone apparatus having means for synchronizing chan

Details Cordless telephone apparatus having means for synchronizing chan Cordless telephone apparatus having means for synchronizing chan

1986-04-28

1987-04-07

Lev, Robert G.

Telephonic communications

Audio message storage, retrieval, or synthesis

379 58, 379 63, H04Q 704

Patent

active

046566538

ABSTRACT:
According to the invention, there is provided a cordless telephone apparatus having: a fixed unit and a portable unit, each having a control device for channel scanning to determine whether or not each of a plurality of channels is engaged, the portable unit being battery charged when it is attached to the fixed unit; a connecting line for transmitting and receiving signals between the two control devices when the portable unit is attached to the fixed unit; and a system for synchronizing the channel scanning processes of the two control devices through the connecting line.

REFERENCES:
patent: 4458111 (1984-07-01), Sugihara
patent: 4467140 (1984-08-01), Fathauer et al.
patent: 4485270 (1984-11-01), Honda et al.
patent: 4535200 (1985-08-01), Himmelbauer et al.
patent: 4558177 (1985-12-01), Corris et al.
patent: 4568800 (1986-02-01), Orikasa
patent: 4574163 (1986-03-01), Zato
patent: 4593155 (1986-06-01), Hawkins
patent: 4595795 (1986-06-01), Endo

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