Apparatus for controlling the application of telephone line powe

Details Apparatus for controlling the application of telephone line powe Apparatus for controlling the application of telephone line powe

1982-07-01

1984-12-11

Rubinson, Gene Z.

179100L, H04M 100

Patent

active

044880065

ABSTRACT:
The present apparatus for controlling the application of telephone line power in a telephone set has obviated the requirement for a local source of power at the premises of a telephone customer. A data processor-based telephone set incorporating the present invention comprises a power supply having first and second voltage storage devices (C401, C402) which accumulate charge from the telephone line. First and second regulator circuits (410, 420) regulate the charging of the voltage storage devices and the power distribution to power-consumptive components of the telephone set during on-hook and off-hook switchhook conditions. A voltage threshold detector (301) actuates a power-down of power consumptive components including the data processor (210) when the power supply voltage falls below a particular threshold value. In the meantime, power is continuously provided to certain essential components such as the volatile memory (220) of the data processor. A telephone impedance switch (202) under data processor control intentionally increases the resistance of the telephone set so that the telephone line voltage delivered to the telephone set is increased, the increased voltage powering certain components of the telephone which require the higher voltage level for proper operation.

REFERENCES:
patent: 3027428 (1962-03-01), Ekl/o/ v
patent: 3908094 (1975-09-01), Deluegue
patent: 3968333 (1976-07-01), Simokat et al.
patent: 4025729 (1977-05-01), Stone
patent: 4104734 (1978-08-01), Herndon
patent: 4279020 (1981-07-01), Christian et al.
patent: 4305065 (1981-12-01), Mogi
patent: 4315162 (1982-02-01), Ferguson
patent: 4399524 (1983-08-01), Muguruma et al.

Affiliated with

Also associated with

Rating

Apparatus for controlling the application of telephone line powe does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for controlling the application of telephone line powe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for controlling the application of telephone line powe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1464898