Telephonic communications – Supervisory or control line signaling – Signal reception at substation
Patent
1996-08-05
1998-08-04
Zele, Krista
Telephonic communications
Supervisory or control line signaling
Signal reception at substation
379373, 379418, 363 31, 363 37, H02M 748
Patent
active
057906548
ABSTRACT:
A space and power efficient digitally controlled, all solid state, DC to AC converter powered by low voltage DC, typically found in logic circuits, that generate a high voltage low frequency AC output with a low slew rate waveform, suitable for activation of an electro-mechanical bell or electronic ringer in a telephone. The present invention is particularly suited for application in small, wireless terminals used to provide telephone services via satellite or terrestrial radio to single users or a small number of users as found in a PBX. The present invention is also particularly suited for battery or solar powered equipment where power efficiency is of significant value.
REFERENCES:
patent: 4056693 (1977-11-01), Bosik et al.
patent: 4631361 (1986-12-01), Miller
patent: 4827503 (1989-05-01), Takato et al.
patent: 4925511 (1990-05-01), Burns et al.
patent: 4942600 (1990-07-01), Suzuki
patent: 5307407 (1994-04-01), Wendt et al.
patent: 5321596 (1994-06-01), Hurst
patent: 5323456 (1994-06-01), Oprea
patent: 5363443 (1994-11-01), Petty
patent: 5402480 (1995-03-01), Hirahara
patent: 5426695 (1995-06-01), Misu
patent: 5490054 (1996-02-01), Hanebrink, Jr.
patent: 5491746 (1996-02-01), Pinard
patent: 5555301 (1996-09-01), Boike et al.
patent: 5563943 (1996-10-01), Takebayashi et al.
Saint-Lurin Jacques M.
Telogy Networks Inc.
Zele Krista
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