Telephonic communications – Audio message storage – retrieval – or synthesis
Patent
1989-12-12
1991-11-26
Dwyer, James L.
Telephonic communications
Audio message storage, retrieval, or synthesis
379 63, 379355, H04M 156, H04M 1100
Patent
active
050688898
ABSTRACT:
According to the invention, an E.sup.2 P-ROM, which is a non-volatile memory element capable of electrically reading and writing data as a memory element to store ID codes, is used and the remaining memory area of the non-volatile memory element is used to store abbreviated dialing numbers. This arrangement makes it unnecessary to separately provide a memory element to store the abbreviated dialing numbers and dispenses with the backup batteries for the abbreviated dialing numbers memory. The number of component parts can also be reduced to allow the telephone set to be manufactured at a lower cost. Further, a cordless remote unit can be used to program itself, and a base unit, with identical ID codes to provide private access lines. Also, the base unit can either read or write the ID code from or to its memory, respectively, dependent upon the transmission sent from the remote unit.
REFERENCES:
patent: 4535200 (1985-08-01), Himmelbauer et al.
patent: 4677656 (1987-06-01), Bueke et al.
patent: 4720855 (1988-01-01), Ohnishi et al.
patent: 4864599 (1989-10-01), Saegusa et al.
Bost Dwayne D.
Dwyer James L.
Sharp Kabushiki Kaisha
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